

- Article dans une revue
- Autre publication scientifique
- Brevet
- Chapitre d'ouvrage
- Communication dans un congrès
- Poster de conférence
- Pré-publication, Document de travail
- Rapport
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- Article dans une revue
Emerging role of nucleic acid aptamers in sepsis-induced coagulopathy: Future perspectives in diagnostics and therapeutics
Maeva Martin, Marine Tschirhart, Cyril Auger, Florence Toti, Julie Helms, Laurence Choulier
Annals of Intensive Care, 2026, 16, pp.100014. ⟨10.1016/j.aicoj.2025.100014⟩
Article dans une revueStimuli-responsive double emulsions: Formulation, stability, and triggered release mechanisms
Mohamed Elhassan, Seid Mahdi Jafari, Ali Imran Abid, Thierry Vandamme, Guillaume Conzatti, Nicolas Anton
Advances in Colloid and Interface Science, 2026, 357, pp.103994. ⟨10.1016/j.cis.2026.103994⟩
Article dans une revueAbstractDouble emulsions (DEs) are hierarchical nested-droplet systems that can compartmentalize hydrophilic and lipophilic compounds within two coupled liquid-liquid interfaces. Their performance is governed by interfacial composition, transport across the intermediate phase, osmotic coupling, and baseline instability pathways. Consequently, a structural change observed after exposure to a chemical, biochemical, or physical cue does not, by itself, demonstrate deliberately designed stimuli-responsiveness. This review critically examines double-emulsion systems in which a responsive motif, a phase transition, or a switchable interfacial component is intentionally incorporated to produce a measurable structural, interfacial, or transport response under a defined stimulus. Particular attention is given to water-in-oil-in-water and oil-inwater-in-oil architectures. Baseline instability mechanisms and preparation routes are first discussed as determinants of droplet architecture, barrier properties, and response reproducibility. Representative systems are then assessed according to the applied stimulus, the location of the responsive element, the immediate physicochemical mechanism, the resulting structural or transport response, and the evidence required to distinguish designed triggering from non-specific destabilization. The review further distinguishes liquid DEs intended to remain compartmentalized during use from DEtemplated carriers, for which the double emulsion serves primarily as a fabrication intermediate. Across the available evidence, robust stimuli-responsive behavior requires the simultaneous control of baseline stability, osmotic balance, interfacial mechanics, barrier-phase transport, and stimulus exposure conditions. Future progress will depend on standardized characterization methods, quantitative stimulus-response assays, and formulation strategies compatible with reproducible manufacturing and application-relevant constraints.
Next-generation therapies for osteoarthritis: the evolving role of cell therapy products
Valtteri Peitso, Ron Ellis, Karman Ng, Simone Ponta, Rana Smaida, Nadia Benkirane-Jessel, Nancy P Duarte-Delgado, Tobias Winkler, Goncalo Barreto, Jean-Yves Reginster, Ali Mobasheri
Experimental & Molecular Medicine, 2026, 58 (6), pp.1754 - 1771. ⟨10.1038/s12276-026-01726-y⟩
Article dans une revueAbstractOsteoarthritis (OA) remains a major cause of disability worldwide; however, current non-surgical treatments offer transient symptom relief without altering disease course. This leaves a therapeutic gap for patients with early-to-moderate disease who are not candidates for surgery but continue to experience pain and functional limitation. Intra-articular interventions such as nonsteroidal anti-inflammatory drugs, hyaluronic acid, and platelet-rich plasma may ease symptoms, but do not modify disease progression. By contrast, cell therapy products hold promise as regenerative approaches that may both alleviate pain and influence disease trajectory. Cell therapy products for knee OA exert multimodal effects through paracrine and immunomodulatory mechanisms, including modulation of synovial inflammation, attenuation of senescence-associated pathways, and support of extracellular matrix production. Despite encouraging preclinical and clinical signals, only a few cell therapy products have been approved globally, and most remain in development. However, substantial translational challenges remain, including variability in cell source and potency, limited persistence in joint environment, small clinical trial sizes, and regulatory and manufacturing hurdles. To achieve broader adoption, it will be essential to demonstrate superiority to minimally manipulated orthobiologics, clarify redosing strategies, and generate robust long-term evidence. This Review discusses recent clinical trial data, mechanistic insights, regulatory considerations, and operational challenges shaping the evolving role of cell therapy products for OA as nextgeneration candidates to bridge the gap between pharmacological and surgical interventions. In addition, this Review is written to support regulatory agencies as well as academics and clinicians involved in the development and evaluation of cell therapy products.
Cyclometalated Iron(II) Complexes Induce The Endoplasmic Reticulum Stress Pathway and Ferroptosis in Gastric Cancer Cells
Carolina Torres-Gutiérrez, Aldo Estrada-Montaño, Christophe Orvain, Jorge Solís-Ruíz, Mingyi Wu, Alexander Ryabov, Christian Gaiddon, Georg Mellitzer, Ronan Le Lagadec
Organometallics, 2026, ⟨10.1021/acs.organomet.6c00115⟩
Article dans une revueD-dimer diagnostic performance for splanchnic vein thrombosis: A systematic review
Elena-Mihaela Cordeanu, Simon Soudet, Dominique Stephan
JVS-Vascular Insights, 2026, pp.100464. ⟨10.1016/j.jvsvi.2026.100464⟩
Article dans une revueAbstractObjective This systematic review aimed to evaluate the diagnostic accuracy of D-dimer testing for splanchnic vein thrombosis (SVT), a clinical setting where its role remains uncertain due to confounders such as hepatic dysfunction and inflammation. Methods This review was registered on the Open Science Framework (https://osf.io/4pnr5) and conducted in accordance with PRISMA-DTA guidelines. PubMed and EMBASE were searched from inception through January 3, 2026. Studies evaluating D-dimer diagnostic accuracy for SVT, with imaging as the reference standard, were included. Methodological quality was assessed using QUADAS-2 and PROBAST. Data were synthesized narratively due to clinical and methodological heterogeneity. Results Twenty-five studies comprising 9,052 patients were included. Among the 14 studies with originally reported diagnostic metrics, sensitivity ranged from 54.5% to 95.3%, specificity from 33.0% to 96.0% and the area under the curve (AUC) from 0.615 to 0.982. Diagnostic performance varied notably by clinical context, with post-splenectomy AUC of 0.615–0.89, and cirrhosis AUC of 0.678–0.982. In cirrhotic patients, accuracy declined with worsening hepatic function (AUC of 0.809–0.963 in Child-Pugh class A versus 0.691–0.698 in class C). Optimal cut-off values varied widely (300–13,255 ng/mL), reflecting population and assay diversity. Multimarker models combining D-dimer with P-selectin or von Willebrand factor outperformed D-dimer alone (AUC of 0.807–0.975). Conclusions D-dimer demonstrates variable diagnostic accuracy for SVT, with performance markedly influenced by hepatic function and clinical setting. Current evidence does not support its use as a universal standalone rule-out test across the full spectrum of clinical settings, despite a high negative predictive value in selected low-risk populations. Multimarker approaches show promise but require prospective validation in well-designed studies.
In vitro screening of compounds for targeting gastric cancer with Y220C p53 mutation: a molecule combining zinc chelation and a Michael acceptor drives CDKN1 and BBC3 expression to restore a p53-dependent cytotoxicity.
Simon Nannini, Céline Sieffert, Andrew Mcgown, Xin-Yue Gao, Amanda Jarvis, Georges E Kostakis, Antal Galvacsi, Csilla Kallay, Ruxandra Moraru, Matthias G Baud, Sebastian Mandel, Dimitros-Ilias Balourdas, Andreas C Joerger, Christophe Orvain, Simon Peschard, Audrey Nion, Georg Mellitzer, Sophie Lottiaux, John Spencer, Isabelle Gross, Christian Gaiddon
Journal of Enzyme Inhibition and Medicinal Chemistry, 2026, 41 (1), pp.2638836. ⟨10.1080/14756366.2026.2638836⟩
Article dans une revueAbstractPoint mutations in p53 favour tumour aggressivity, particularly in gastric cancer (GC), and offer a target for small molecule-based anticancer treatments. This study focused on the p53-Y220C mutation, which causes p53 misfolding due to thermal instability associated with the creation of a pocket that may accommodate small molecules. This mutation also creates an additional free cysteine thiol group that may react with Michael acceptors. Using an integrated in silico and in vitro approach, four compounds (AG1, AG2, AG3, and RK349) were screened for potential reactivation of p53-Y220C in GC cells. AG3, a compound with zinc chelation and Michael acceptor properties, was found to induce p53 target gene expression via p53-dependent and -independent pathways. AG3 limited reactive oxygen species production, reducing toxicity to healthy cells. Furthermore, AG3 induced p53-dependent cytotoxicity and enhanced chemotherapy response. This study presents a novel compound with p53-Y220C reactivation potential, highlighting its promise for further development.
Osteoinductive and Biocompatibility Assessment of a 3D-Printed Polymeric–Hydroxyapatite Composite Interference Screw
Rana Smaida, Louis-Paul Maugard, Hervé Gegout, Manuel Arruebo, Florence Fioretti, Nadia Benkirane-Jessel, Henri Favreau
Polymers, 2026, 18 (10), pp.1239. ⟨10.3390/polym18101239⟩
Article dans une revueAbstractAnterior cruciate ligament reconstruction relies on interference screw fixation, yet insufficient graft osseointegration remains a critical clinical challenge. This study aimed to develop and characterize a 3D-printed polymeric-hydroxyapatite composite interference screw with an osteoinductive surface to enhance localized osteogenic responses. Screws were designed, modeled, and fabricated using fused deposition modeling 3D printing with a polycaprolactone-poly(lactic-co-glycolic acid)-hydroxyapatite composite. Physico-chemical characterization was performed using scanning electron microscopy. Biocompatibility was assessed through mesenchymal stem cell metabolic activity assays and morphological analysis. Osteogenic gene expression was quantified by RT-qPCR following culture in osteogenic differentiation medium. In vivo osseointegration was evaluated histologically at five and nine weeks following implantation in the proximal tibial epiphysis of a rat model. 3D printing successfully produced screws with consistent geometry and surface characteristics. The composite material supported robust mesenchymal stem cell proliferation without cytotoxicity or morphological abnormalities. Histological examination revealed progressive bone formation with no adverse tissue reactions, including the absence of cyst formation, osteolysis, or excessive fibrosis. RT-qPCR revealed upregulation of osteogenic markers in those enhanced screws. These results indicate that the 3D-printed polymeric-hydroxyapatite composite screws are biocompatible and capable of stimulating localized osteogenic activity, supporting their potential as a biological foundation for future evaluation in anterior cruciate ligament reconstruction applications.
Host-directed antiviral strategy targeting prohibitins: Mel56 suppresses influenza A virus and severe acute respiratory syndrome coronavirus 2 via modulation of antioxidant pathways and mitochondrial function
Masaki Shoji, Rina Hashimoto, Canan G Nebigil, Kazuto Takegawa, Itsuki Tomita, Kensuke Nakaoka, Momiji Ishikawa, Yasufumi Matsumura, Miki Nagao, Tomoyuki Esumi, Etsuhisa Takahashi, Hiroshi Kido, Yasuo Shinohara, Laurent Désaubry, Kazuo Takayama, Takashi Kuzuhara
Microbiology Spectrum, 2026, 14 (7), pp.e03093-25. ⟨10.1128/spectrum.03093-25⟩
Article dans une revueAbstractRespiratory viruses, such as influenza A virus (IAV) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), remain major global health threats, and the emergence of drug-resistant variants underscores the urgent need for host-tar geted antiviral strategies. Prohibitins (PHBs), mitochondrial scaffold proteins involved in diverse cellular processes, are host factors exploited by multiple viruses. Here, we investigated the antiviral potential of two PHB-binding triazine melanogenin derivatives, Mel56 and Mel6, against IAV and SARS-CoV-2. Mel56, but not Mel6, exhibited potent anti-IAV activity. In particular, Mel56 increased cell survival, suppressed viral nucleo protein expression, and reduced viral gene transcription in IAV-infected Madin-Darby canine kidney (MDCK) cells and A549 human lung carcinoma cells. PHB2 knockdown enhanced the inhibitory effect of Mel56, supporting the involvement of PHBs in its antiviral mechanism. Transcriptomic profiling revealed that Mel56 downregulates virus-induced immune response genes while upregulating antioxidant response-rela ted genes, including nuclear factor erythroid 2-related factor 2 (NRF2) target genes. NRF2 activation by Mel56 was confirmed using a reporter assay. Consistent with these findings, Mel56 impaired mitochondrial ATP synthesis and electron transport in isolated rat liver mitochondria and attenuated mitochondrial membrane potential and promo ted mitochondrial reactive oxygen species production in live MDCK cells. Importantly, Mel56 exhibited potent anti-SARS-CoV-2 activity in human induced pluripotent stem cell-derived lung organoids. Mel56 did not upregulate NRF2 target genes in SARS-CoV-2infected organoids. These findings identify Mel56 as a PHB-binding compound with broad-spectrum antiviral activity and support the development of PHB-targeting ligands as a novel host-directed therapeutic strategy against respiratory viral infections. IMPORTANCE This study identifies Mel56 as a novel host-directed antiviral compound that targets prohibitins and suppresses both influenza A virus and severe acute respiratory syndrome coronavirus 2. Mel56 exhibits broad-spectrum antiviral activity in conventional cell culture models as well as in physiologically relevant human lung organoids. Mechanistically, Mel56 upregulates antioxidant response-related genes, activates nuclear factor erythroid 2-related factor 2, impairs mitochondrial function, and enhances mitochondrial reactive oxygen species production. Notably, its effects differ depending on the cellular context, underscoring the complexity of host signal ing pathways during viral infection. These findings highlight prohibitins as promising therapeutic targets and provide proof of concept for the development of host-directed strategies to combat respiratory viruses and mitigate the emergence of drug resistance.
Molecular Basis and Clinical Spectrum of WNT10A ‐Related Oligodontia
Elise Perennes, Nadia Benkirane-Jessel, Nicolas Anton, Thierry Vandamme, François Clauss, Guillaume Conzatti
Clinical Genetics, 2026, ⟨10.1111/cge.70178⟩
Article dans une revueAbstractWNT10A mutations, a major genetic determinant of dental agenesis and ectodermal dysplasia, exert profound effects on craniofacial development. Although classified as rare disorders, these mutations account for more than half of oligodontia cases, reflecting their critical role. The associated phenotypes span a broad clinical spectrum, ranging from isolated tooth agenesis to complex multisystem disorders, including hypodontia, enamel and root defects, palmoplantar keratoderma, alopecia, nail dystrophy, skin xerosis, hypohidrosis, eyelid cysts, and skin cancer, skeletal abnormalities and impaired bone homeostasis, underscoring their systemic impact. This review synthesizes current biological and clinical knowledge by linking phenotypes of WNT10A mutations to disruptions in Wnt/β-catenin signaling and its interactions with BMP, SMAD, RANK/RANKL/OPG, VEGF, and other regulatory pathways. Altered pathway activity affects key processes in tooth morphogenesis, osteogenesis, cellular proliferation, and tissue maintenance, offering mechanistic explanations for the heterogeneity and severity of patient presentations. A clearer understanding of these pathways is essential for improving diagnosis and management of WNT10A-associated oligodontia, particularly in treatment planning for growth-dependent interventions, regenerative strategies, and implant rehabilitation. Despite significant progress, critical gaps remain in defining the molecular basis of variable expressivity and genotype–phenotype relationships. Elucidating these mechanisms will be pivotal for advancing precision approaches in dental and craniofacial care.
European Society of Neuroendocrine Tumors ( ENETS ) 2025 guidance paper for lung and thymic carcinoids
Eric Baudin, Alice Durand, Wieneke Buikhuisen, Jaume Capdevila, Martyn Caplin, Christophe Deroose, Clarisse Dromain, Antongiulio Faggiano, Pier Luigi Filosso, Gregory Kaltsas, Marco Volante, Thomas Walter, Rocio Garcia-Carbonero
Journal of Neuroendocrinology, 2026, 38 (4), pp.e70174. ⟨10.1111/jne.70174⟩
Article dans une revueAbstractAbstract This ENETS guidance paper, developed by a multidisciplinary working group, provides up‐to‐date and practical advice on the diagnosis and management of lung and thymic carcinoids, based on recent developments and study results. These recommendations aim to provide practical recommendations for the diagnosis, treatment and follow‐up of these tumours, and pave the road for more standardised care for our patients expecting improved outcomes. This paper is structured on a question‐answer format in order to address common dilemmas encountered in clinical practice, including controversial issues and areas of uncertainty, based on the best available evidence and expert opinion when good quality evidence is not available. Each recommendation will provide a level of evidence and grade of recommendation as per the GRADE system (adapted from the Infectious Disease Society of United States Public Health Service grading system).
Efficacy, safety, and biomarker analysis of datopotamab deruxtecan in advanced non-small cell lung cancer: ICARUS-LUNG01 phase 2 study
David Planchard, Nathalie Cozic, Maria Fernanda Mosele, Noemie Corcos, Loïc Le Bescond, Yoann Pradat, Maria Rosa Ghigna, Ghada Nachabeh, Alexia Alfaro, Cyril Catelain, Bastien Job, Fathia Mami-Chouaib, Severine Badel, Stephanie Corgnac, Françoise Farace, Marianne Oulhen, Patricia Kannouche, Diep Thi Ngoc Tran, Nathalie Droin, Marie Wislez, Christos Chouaid, Hubert Curcio, Sophie Cousin, Celine Mascaux, Jacques Cadranel, Margaux Geier, Rasha Cheikh-Hussin, Pierre Guyader, Nicholas Signolle, Karine Godefroy, Hugues Talbot, Maria Vakalopoulou, Stergios Christodoulidis, Elsa Bernard, Yves Koudou, Valerie Camara, Abdelhafidh Belarkemi, Alexis Klein, Jean Philippe Morretton, Philip East, Rachel Chiaverelli, Ricardo Zwirtes, Stefan Michiels, Fabrice Barlesi, Fabrice André, Guillaume Montagnac, Barbara Pistilli
Cancer Cell, In press, ⟨10.1016/j.ccell.2026.03.017⟩
Article dans une revueAbstract<div>ICARUS LUNG01 study confirms activity and</div>
Climate change and brain health, a risk management approach focusing on the European region: A narrative review
Jacques Reis, Alain Buguet, Zeliha Tulek, Alain Froment, Anne-Marie Landtblom, Manny W Radomski, Şerefnur Öztürk, Mohammed Wasay, Ulf Kallweit, Gustavo C Roman, Chafiq Hicham, Emmeline Lagrange, Peter S Spencer
Journal of the Neurological Sciences, 2026, 483, pp.125836. ⟨10.1016/j.jns.2026.125836⟩
Article dans une revueAbstractAmong the myriad consequences of climate change, global warming and extreme weather events are particularly critical due to their well-documented impact on neurological and psychological well-being. However, the severity of these impacts varies significantly by geography. This article assesses the potential adverse effects of climate change on "brain health" through a risk management framework. The analysis begins by evaluating existing governance and risk-assessment procedures, followed by an examination of human adaptive capacities and natural risks. The latter draws upon climatological data-specifically regarding global warming and the "tropicalization" of the Euro-Mediterranean region-as well as anthropological insights. Building on this foundation, we propose strategies for effective risk control, including adaptation, mitigation, and preparedness. Success depends on the mobilization of public health researchers and professionals to drive organizational change and implement preventative measures to address extreme events. Consequently, the article advocates for specific decisions regarding communication, education, and early-warning systems to enhance rescue efficiency and prevent disasters. The discussion concludes with a focus on mitigation strategies specifically tailored to the Euro-Mediterranean region to address the challenges of climate tropicalization.
How Undergraduate Students Perceive Postgraduate Training and Continuing Education: A French Survey
Margot Queney, Catherine Petit, Pierre-Yves Gegout, Olivier Huck
European Journal of Dental Education, 2026, ⟨10.1111/eje.70145⟩
Article dans une revueAbstractIntroduction The practice of Continuing Dental Education (CDE) serves as a fundamental requirement for lifelong learning but there is limited knowledge about how dental students handle CDE during their final educational period. This study examined how final-year French dental students perceive CDE through their expectations, motivation and their decision-making methods. Methods In 2024 and 2025, an online questionnaire was distributed to final year students from all French dental faculties. The survey contained 45 questions categorized into three sections that assessed: (1) self-evaluation of participants’ knowledge across all dental fields, (2) participants’ objectives regarding future clinical practice and (3) awareness of existing CDE. Results One hundred and seventy one students responded to the survey which represented a response rate of 13.5%. Only 36.2% of the respondents were fully satisfied with undergraduate training, and the disciplines most often perceived as insufficient (implantology, oral surgery, fixed prosthodontics) were also those most desired for CDE or specialization. Students demonstrated trust in university-based programs while selecting diploma-granting courses but only 10.5% of them had selected a specific educational path. Students primarily used the Internet for information retrieval, but they prefer in-person interactive and clinical training courses over digital courses. Conclusion For French dental students, CDE is seen both as lifelong learning and a way to fill training gaps, highlighting the need for clearer guidance and practice-oriented, evidence-based courses.
Second‐generation prokineticin PKR 1 receptor agonists: Advancing cardioprotection against chemotherapy‐induced toxicity
Anais Audebrand, Simone Brogi, Mustafa Tezeren, Andrea Tafi, Omer Ocak, Hasan Koyuncu, Igor Tetko, Laurent Désaubry, Canan Nebigil
British Journal of Pharmacology, 2026, Online ahead of print. ⟨10.1111/bph.70394⟩
Article dans une revueAbstractBackground and purpose. Anthracycline‐induced cardiotoxicity, particularly from doxorubicin, remains a major limitation in cancer therapy, contributing to heart failure and long‐term morbidity. Prokineticin receptor‐1 (PKR 1 ), involved in cardiomyocyte survival and anti‐fibrotic signalling, represents a promising therapeutic target. This study evaluated the cardioprotective potential of IS39, a novel non‐peptide PKR 1 agonist, in models of doxorubicin‐induced cardiac injury. Experimental approach. In silico ADME–toxicity profiling, scaffold optimisation and molecular docking were used to refine non‐peptide PKR 1 agonists, replacing the dehydroamide moiety of first‐generation compounds with a D‐aminoacyl group to enhance metabolic stability. The lead compound IS39 was evaluated in vitro in primary cardiomyocytes and in vivo in a murine model of doxorubicin‐induced cardiotoxicity. Parallel studies assessed potential interference with doxorubicin antitumour activity in breast cancer cell lines and 3D tumour spheroids. Endpoints included cardiomyocyte viability, oxidative stress, fibrotic markers, cardiac function, histopathology and systemic tolerability. Key results. IS39 selectively activated PKR 1 , reduced reactive oxygen species, suppressed profibrotic gene expression and protected cardiomyocytes from doxorubicin‐induced cytotoxicity in vitro. These effects were abolished by PKR 1 knockdown or antagonism, confirming on‐target activity, and IS39 did not impair doxorubicin antitumour efficacy. In vivo, IS39 preserved left ventricular ejection fraction, attenuated myocardial fibrosis and apoptosis, and improved cardiac morphology. However, systemic IS39 administration exacerbated doxorubicin‐associated weight loss and did not improve overall survival. Conclusions and implications. IS39 confers cardioprotection via PKR1‐mediated antioxidant and antifibrotic mechanisms. Despite systemic tolerability limitations, these findings support PKR1 as a therapeutic target and justify development of tissue‐selective PKR1 agonists for cardio‐oncology applications.
Missed Opportunity for Fibrinolysis in ST-Segment–Elevation Myocardial Infarction: The Nationwide France-PCI Registry
Louis-Marie Desroche, Matthieu Daniel, Etienne Puymirat, Youssef Rahal, Marine Quillot, Olivier Nugue, Olivier Tricot, Ouissem Zid, Benoit Herce, Thibault Perret, Laurent Leborgne, Fabrice Prunier, Nicolas Meneveau, Luc Maillard, Franck Barbou, Christophe Robin, Nizar Ben Mansour, Akram Chmait, François Huchet, Yoann Lefrancois, Guillaume Molins, Erwan Bressollette, Guillaume Cayla, Julien Adjedj, Eric Van Belle, Christophe Saint Etienne, René Koning, Hakim Benamer, Philippe Commeau, Stephan Chassaing, Pascal Motreff, Michel Zeitouni, Grégoire Rangé
European Heart Journal. Quality of Care and Clinical Outcomes, 2026, ⟨10.1093/ehjqcco/qcag041⟩
Article dans une revueAbstractBackground Timely reperfusion is a key quality-of-care target in ST-segment–elevation myocardial infarction (STEMI). When primary percutaneous coronary intervention (PPCI) cannot be delivered within 120 minutes from first medical contact (FMC), guidelines recommend fibrinolysis as early as possible within 12 hours of symptom onset in eligible patients. We quantified missed opportunities for fibrinolysis in a nationwide STEMI network. Methods We analysed consecutive STEMI patients enrolled ≤24 hours from symptom onset in the France-PCI registry (2014–2022). FMC was approximated by the first diagnostic ECG. Initial reperfusion was classified as timely PPCI (FMC-to-device ≤120 min), delayed PPCI (>120 min), or fibrinolysis. Among delayed PPCI, eligibility for fibrinolysis required no oral anticoagulant, no prior stroke, and no documented contraindication. We evaluated temporal trends, regional variation, and outcomes. Results Among 19,472 patients, 12,633 (64.9%) underwent timely PPCI, 5,895 (30.3%) delayed PPCI, and 944 (4.8%) fibrinolysis. Timely PPCI increased over time, whereas fibrinolysis declined. Among delayed PPCI, 3,279/5,895 (55.6%) presented within the prespecified early-presenter window (symptom-to-ECG ≤3 h) and met our strict fibrinolysis-eligibility criteria, yet underwent delayed PPCI; this proportion remained stable across years, with marked regional heterogeneity. Fibrinolysis use was favoured by mobile intensive care units, helicopter transport, and longer distance to PPCI centres, whereas older age was associated with delayed PPCI without fibrinolysis. Conclusions In this national STEMI network, more than half of delayed PPCI in eligible early presenters represented a persistent missed-fibrinolysis gap. Routine audit of delayed PCI and missed fibrinolysis as system-level quality metrics should guide time-based pre-hospital triage and align reperfusion with guideline-recommended targets.
Methylated PIH1D1 as a Heart-Specific Biomarker for Anthracycline-Induced Cardiac Remodeling in Breast Cancer Patients
Po-Yen Hsu, Wan-Hong Huang, Yi-Yun Lee, Robert Passier, Szu-Chin Li, Chong-Lin Hong, Shih-Kai Hung, Hong-Yi Lin, Chun-Hung Lin, Chen-Yu Chien, Yi-Da Li, Hsiang-Chun Lee, Laurent Désaubry, Canan G Nebigil, Michael W.Y. Chan
JACC : Basic to Translational Science, 2026, 11 (4), pp.101510. ⟨10.1016/j.jacbts.2026.101510⟩
Article dans une revueAbstractAnthracyclines, key chemotherapy agents, pose cardiotoxicity risks. In a 3-year study of 89 breast cancer patients treated with doxorubicin or epirubicin, more than 50% showed reduced left ventricular ejection fraction and progressive ventricular dilation. Although troponin-I flagged acute damage, it failed to predict long-term remodeling. Using a human methylome atlas, researchers identified 33 heart-specific methylated CpG sites and validated methylated PIH1D1 (mPIH1D1) as a novel biomarker. Elevated mPIH1D1 levels strongly correlated with ventricular dilation but not left ventricular ejection fraction decline, indicating its sensitivity to early cardiac remodeling. mPIH1D1 may complement troponin-I in risk assessment and cardiotoxicity management for patients undergoing anthracycline-based chemotherapy.
Plasminogen supplementation reverses fibrinolytic insufficiency in sepsis-induced disseminated intravascular coagulation: a pilot study
Marine Tschirhart, Anaïs Curtiaud, Ramy Abou Rjeily, Hamid Merdji, Julien Demiselle, François Severac, Daniel Guerin, Micael Caçao, Fatiha El Ghazouani, Eduardo Angles-Cano, Florence Toti, Ferhat Meziani, Julie Helms
Intensive Care Medicine, 2026, ⟨10.1007/s00134-026-08338-0⟩
Article dans une revueAbstract<div><p>Purpose: Sepsis-induced disseminated intravascular coagulation (DIC) is characterized by impaired fibrinolysis, partly due to neutrophil elastase-mediated plasminogen degradation. We aimed to evaluate whether plasminogen supplementation could restore fibrinolytic capacity in patients with sepsis-induced coagulopathy and in a murine model of septic DIC.</p><p>Methods: 60 patients with sepsis-induced coagulopathy were randomized to receive 12 mL/kg of placebo (NaCl 0.9%) or OctaplasLG ® , a pathogen-inactivated pooled human plasma containing 2 µM plasminogen. Pre-and post-infusion levels of functional plasminogen, plasmin generation, and fibrinolysis markers (plasmin-antiplasmin complexes, plasminogen activator inhibitor-1, and tissue-type plasminogen activator) were measured. In parallel, in a sepsis-induced DIC model, transgenic TM pro/pro mice received either purified plasminogen or placebo. Functional plasminogen levels and plasmin generation were assessed via enzymatic assays.</p></div> <div>Results:<p>In patients, baseline plasminogen and plasmin generation were significantly lower than in healthy controls. OctaplasLG ® significantly increased functional plasminogen (+ 46 nM [-96; 118] vs. -84 [-180; 27] nM, p < 0.05) and improved plasmin generation (0.12 [-0.25; 1.27] vs. -0.36 [-1.58; 0.12] fmol, p < 0.05). No changes were observed in plasmin-antiplasmin, plasminogen activator inhibitor-1, or tissue-type plasminogen activator levels. A non-significant trend toward reduced mortality was noted in patients receiving OctaplasLG ® (42.3% vs. 60.0%).</p><p>Septic DIC-mice also exhibited reduced functional plasminogen (100 [66-126] vs. 295 [268-343] nM) and impaired plasmin generation (1.8 [1.4-2.1] vs. 3.0 [2.8-3.3] fmol, p < 0.05), which were restored after plasminogen supplementation (plasminogen: 346 [287; 360] nM; plasmin generation: 4.1 [3.7; 5.5] fmol).</p></div> <div>Conclusion:<p>Plasminogen supplementation restores fibrinolytic capacity, supporting its therapeutic potential in sepsis-induced DIC.</p></div>
Plasminogen supplementation reverses fibrinolytic insufficiency in sepsis-induced disseminated intravascular coagulation: a pilot study
Marine Tschirhart, Anaïs Curtiaud, Ramy Abou Rjeily, Hamid Merdji, Julien Demiselle, François Severac, Daniel Guerin, Micael Caçao, Fatiha El Ghazouani, Eduardo Angles-Cano, Florence Toti, Ferhat Meziani, Julie Helms
Intensive Care Medicine, 2026, Online ahead of print. ⟨10.1007/s00134-026-08338-0⟩
Article dans une revueAbstract<div><p>Purpose: Sepsis-induced disseminated intravascular coagulation (DIC) is characterized by impaired fibrinolysis, partly due to neutrophil elastase-mediated plasminogen degradation. We aimed to evaluate whether plasminogen supplementation could restore fibrinolytic capacity in patients with sepsis-induced coagulopathy and in a murine model of septic DIC.</p><p>Methods: 60 patients with sepsis-induced coagulopathy were randomized to receive 12 mL/kg of placebo (NaCl 0.9%) or OctaplasLG ® , a pathogen-inactivated pooled human plasma containing 2 µM plasminogen. Pre-and post-infusion levels of functional plasminogen, plasmin generation, and fibrinolysis markers (plasmin-antiplasmin complexes, plasminogen activator inhibitor-1, and tissue-type plasminogen activator) were measured. In parallel, in a sepsis-induced DIC model, transgenic TM pro/pro mice received either purified plasminogen or placebo. Functional plasminogen levels and plasmin generation were assessed via enzymatic assays.</p></div> <div>Results:<p>In patients, baseline plasminogen and plasmin generation were significantly lower than in healthy controls. OctaplasLG ® significantly increased functional plasminogen (+ 46 nM [-96; 118] vs. -84 [-180; 27] nM, p < 0.05) and improved plasmin generation (0.12 [-0.25; 1.27] vs. -0.36 [-1.58; 0.12] fmol, p < 0.05). No changes were observed in plasmin-antiplasmin, plasminogen activator inhibitor-1, or tissue-type plasminogen activator levels. A non-significant trend toward reduced mortality was noted in patients receiving OctaplasLG ® (42.3% vs. 60.0%).</p><p>Septic DIC-mice also exhibited reduced functional plasminogen (100 [66-126] vs. 295 [268-343] nM) and impaired plasmin generation (1.8 [1.4-2.1] vs. 3.0 [2.8-3.3] fmol, p < 0.05), which were restored after plasminogen supplementation (plasminogen: 346 [287; 360] nM; plasmin generation: 4.1 [3.7; 5.5] fmol).</p></div> <div>Conclusion:<p>Plasminogen supplementation restores fibrinolytic capacity, supporting its therapeutic potential in sepsis-induced DIC.</p></div>
miR-124 orchestrates epicardial-mesenchymal transformation and paracrine cardiomyocyte maturation in epicardial-specific Tcf21-PKR1 knockout mice
Himanshu Arora, Martina Vincenzi, Anais Audebrand, Amin Kremic, Carmine Gentile, Laurent Desaubry, Canan Nebigil
STEM CELLS, 2026, 44 (3), pp.sxaf082. ⟨10.1093/stmcls/sxaf082⟩
Article dans une revueAbstractDuring the heart development, epicardial-to-mesenchymal transition (EMT) drives the production of progenitor cell populations that contribute to heart formation; however, the molecular control of EMT and its paracrine effects on cardiomyocytes remain poorly elucidated. Here, we defined a novel PKR1–miR-124–SNAI2 signaling axis that orchestrates EMT and coordinates myocardial maturation. Conditional deletion of the prokineticin receptor (PKR1) in mice Tcf21+ epicardial cells caused embryonic lethality and congenital heart disease-like anomalies, including ventricular rupture, arrhythmia, myocardial fibrosis, and impaired contractility. Transcriptomic profiling revealed marked upregulation of miR-124, concurrent with deregulation of EMT genes and signatures of immature cardiomyocytes. Mechanistically, miR-124 directly targets the 3′ untranslated region of SNAI2, suppressing this key EMT regulator, resulting in failed EMT, apoptosis, and fibrosis in the epicardium. Functional rescue through miR-124 inhibition or PKR1 reintroduction restores SNAI2 expression, revives EMT, enhances cell survival, and promotes proper cardiomyocyte maturation. Paracrine effects were substantiated by conditioned media and ex vivo assays, demonstrating that epicardial-derived miR-124 suppressed cardiomyocyte contractility and cardiac maturity gene expression—thereby functionally linking epicardial disruption to myocardial immaturity. These findings establish miR-124 as a critical mediator of epicardial–myocardial communication with PKR1 as its upstream regulator. By integrating epicardial plasticity, myocardial maturation, and ECM homeostasis, our work reveals that targeting the PKR1–miR-124–SNAI2 pathway offers a novel mechanistic framework and potential therapeutic target for preventing or treating congenital heart disease.
Influence of Time Interval Between the Two Stages of Delayed Coloanal Anastomosis on the Risk of Anastomotic Leakage: Multicenter Study from the GRECCAR Group
Maxime Collard, Eric Rullier, Jean-Jacques Tuech, Charles Sabbagh, Amine Souadka, Jérome Loriau, Jean-Luc Faucheron, Stéphane Benoist, Anne Dubois, Frédéric Dumont, Adeline Germain, Gilles Manceau, Frédéric Marchal, Léonor Benhaim, Zaher Lakkis, Hélène Meillat, Simon Derieux, Guillaume Piessen, Anaïs Laforest, Aurélien Venara, Michel Prudhomme, Cécile Brigand, Emilie Duchalais, Mehdi Ouaissi, Gil Lebreton, Philippe Rouanet, Diane Mège, Karine Pautrat, Ian Reynolds, Marc Pocard, Yann Parc, Quentin Denost, Jérémie Lefevre
Diseases of the Colon & Rectum, 2026, 69 (2), pp.235-244. ⟨10.1097/DCR.0000000000004016⟩
Article dans une revueAbstractBACKGROUND: The optimal time interval between the two surgical stages of a delayed coloanal anastomosis has never been investigated. OBJECTIVE: Assess the influence of time interval on anastomotic leakage occurrence DESIGN: Retrospective cohort study. SETTINGS: Multicentric study (30 colorectal centers). PATIENTS: All patients who underwent delayed coloanal anastomosis (2010-2021). MAIN OUTCOME MEASURES: anastomotic leakage in relation to the time interval between the two surgical stages. RESULTS: A total of 506 patients (female: 42%, median age: 62.1 years) underwent delayed colo-anal anastomosis, 63% immediately after a low anterior resection (primary delayed coloanal anastomosis) and 37% after failure of primary pelvic surgery as a salvage procedure (salvage delayed coloanal anastomosis). The main reasons for salvage delayed coloanal anastomosis were chronic pelvic sepsis (42%) and rectovaginal fistula (38%). The mean time interval between two stages was 8.6 ± 3.8 days, ranging from 1 to 22 days. In the entire cohort, the incidence of anastomotic leakage was 18% (89/506, 95 CI [14%, 21%]) and time interval did not affect the occurrence of anastomotic leakage ( p = 0.529). In sub-group analysis, anastomotic leakage risk was not associated with time interval among primary delayed coloanal anastomosis patients ( p = 0.579) whereas it was for salvage delayed coloanal anastomosis patients ( p = 0.013). In salvage delayed coloanal anastomosis patients, multivariate analysis showed that a longer time interval (adjusted OR=0.89, 95 CI [0.81-0.98], p = 0.035) and surgery in centers performing ≥4 delayed coloanal anastomosis per year (adjusted OR = 0.07, 95 CI [0.01-0.36], p = 0.011) were significantly linked to a lower risk of anastomotic leakage. Each additional day between the two salvage delayed coloanal anastomosis procedures was estimated to reduce the risk of anastomotic leakage by 11%. LIMITATIONS: The retrospective design. CONCLUSIONS: In the context of primary delayed coloanal anastomosis, increasing the time interval between the two stages of delayed coloanal anastomosis does not influence the risk of anastomotic leakage. For salvage delayed coloanal anastomosis, extending the time interval significantly reduces the risk of anastomotic leakage.
Severity of complications is associated with impaired health‐related quality of life in people with type 1 diabetes
Sara Barraud, Gloria A. Aguayo, Emmanuel Cosson, Chloé Amouyal, Sylvie Feldman-Billard, Jean-François Gautier, Patricia Vaduva, Samy Hadjadj, Hélène Hanaire, Laurence Kessler, Emmanuelle Lecornet-Sokol, Pascale Massin, Louis Potier, Eric Renard, Yves Reznik, Agnès Sola, Anne Vambergue, Camille Vatier, Bruno Vergès, Jean‐pierre Riveline, Guy Fagherazzi
Diabetes, Obesity and Metabolism, 2026, 28 (2), pp.1201-1212. ⟨10.1111/dom.70306⟩
Article dans une revueAbstractAims Health‐related quality of life (HRQoL) assessment is increasingly integrated into type 1 diabetes (T1D) monitoring to promote a holistic approach. To investigate HRQoL in adults with T1D and to assess the impact of the severity of complications on HRQoL. Materials and Methods This is a cross‐sectional analysis of baseline characteristics of adults living with T1D included in Société Francophone du Diabète – Cohorte Diabète de Type 1 (SFDT1), a French longitudinal cohort study. HRQoL was assessed using generic (EuroQol 5‐Dimensions 5‐Level questionnaire [EQ‐5D‐5L]) and diabetes‐specific (Audit of Diabetes‐Dependent Quality of Life) instruments. The severity of diabetes complications was measured using an adapted Diabetes Complication Score Index (DCSI) ranging from 0 to 14. We used multiple imputations to deal with missing data. Results We included 1892 adults, 48% women, with a median (interquartile range [IQR]) age of 38 (28; 51) years. The mean overall EQ‐5D‐5L HRQoL score was 71.1 ± 17.7 (maximum 100), with the following number of participants negatively impacted for each domain: 271 (14%) for mobility, 94 (5%) for self‐care, 378 (19%) for usual activities, 853 (45%) for pain/discomfort and 983 (52%) for anxiety/depression. The median (IQR) DCSI was 1 (0; 2). In multivariable models, a one‐step increase in DCSI was associated with a 1.5% decrease in overall EQ‐5D‐5L HRQoL. DCSI was also inversely associated with all domains of the generic scale except anxiety/depression and 17 domains of the diabetes‐specific scale. Conclusions We observed an inverse association between the severity of complications and overall HRQoL and most of its dimensions. Our results highlight the need to reinforce the prevention of complications to improve the overall well‐being of people with T1D.
Low plasminogen and impaired fibrinolysis in sepsis-induced DIC: a potential mechanistic link and therapeutic perspective
Julie Helms, Eduardo Angles-Cano, Ferhat Meziani, Ramy Abou Rjeily, François Severac, Micael Caçâo, Lluvia Ramirez-Aquino, Fatiha El Gazhouani, Florence Toti
Intensive Care Medicine, 2026, ⟨10.1007/s00134-025-08280-7⟩
Article dans une revueAbstractNo abstract available
LUNG CARCINOIDS (Lung Neuroendocrine Tumors)
Anna Koumarianou, Jules Derks, Marina Tsoli, Marco Volante, Lynnette Fernandez-Cuesta, Vikas Prasad, Pier Luigi Filosso, Benjamin Gibert, Thomas Walter, Alice Durand
Endocrine reviews, 2026, ⟨10.1210/endrev/bnag001⟩
Article dans une revueAbstractAbstract This narrative review written by experts aims to provide a comprehensive synthesis of current knowledge and guidelines on lung carcinoids, emphasizing the multidimensional approach required for effective diagnosis and management. The manuscript will: i) Define and classify lung carcinoids in accordance with the latest WHO classification system, and emphasize the importance of molecular markers for precise subtyping; ii) Analyze epidemiological trends, discuss prevalence, incidence, and mortality rates, alongside key risk factors including genetic predispositions (MEN1) and precursor lesions such as diffuse idiopathic pulmonary neuroendocrine cell hyperplasia (DIPNECH); iii) Investigate the etiology and carcinogenesis of lung carcinoids, including insights into the molecular hallmarks and pathways that underlie tumor development and progression; iv) Detail clinical presentations, distinguishing pulmonary symptoms from secretory syndromes (carcinoid syndrome and Cushing’s syndrome), supported by visual aids to elucidate symptom prevalence and implications; v) Present an integrated diagnostic approach, encompassing state-of-the-art imaging modalities (CT, MRI, 68Ga-SSA-PET-CT) and advanced molecular pathology techniques; vi) Outline evidence-based treatment strategies, addressing early-stage interventions, systemic therapies, locoregional therapies, and emerging modalities such as immunotherapy and agnostic approaches; vii) Explore the role of multidisciplinary management, highlighting the critical importance of tumor boards dedicated to lung carcinoids and provide a checklist of key items for comprehensive case discussion and decision-making; viii) Conclude with future perspectives, identifying gaps in current knowledge and suggest directions for research to enhance diagnosis, treatment, and overall patient quality of life.
Experts’ recommendations for the management of adult patients with cardiogenic shock
Nadia Aissaoui, Clement Delmas, Hamid Merdji, Guillaume Schurtz, Guillaume Baudry, Antoine Beurton, Florence Boissier, Laurent Bonello, Bernard Cholley, Nicolas Combaret, Alain Combes, Charles-Henri David, Daniel de Backer, Pierre-Grégoire Guinot, Olfa Hamzaoui, Brahim Harbaoui, Julien Imbault, Nicolas Nesseler, Antoine Kimmoun, Michel Kindo, Guillaume Lebreton, Guillaume Leurent, Bruno Levy, Stéphane Manzo-Silberman, Anne-Céline Martin, Armand Mekontso-Dessap, Imane Adda, Joy Mootien, Alexandre Ouattara, Matteo Pozzi, Étienne Puymirat, François Roubille, Antonin Trimaille, Aurore Ughetto, Eric van Belle, Eric Bonnefoy-Cudraz, Khaldoun Kuteifan
Archives of cardiovascular diseases, 2026, 119 (5), pp.370-389. ⟨10.1016/j.acvd.2026.02.001⟩
Article dans une revueAbstractThe last specific international European recommendations regarding the management of cardiogenic shock (CS) regardless of the etiology were issued over 10years ago. We present herein recommendations for the management of CS in adults, developed using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system by an expert group of from the French Intensive Care Society [Société de réanimation de langue française (SRLF)] and the French Society of Cardiology [Société française de cardiologie (SFC)], with the participation of the French Society of Anesthesia and Intensive Care [Société française d'anesthésie et de réanimation (SFAR)], and the French Society of Thoracic and Cardiovascular Surgery [Société française de chirurgie thoracique et cardio-vasculaire (SFCTCV)]. The recommendations covered six fields of application: CS teams and expert centers, symptomatic medical management, etiological management, organ support, temporary circulatory support and de-escalation and early post-CS management. Twenty-three \"Patient Intervention Comparator Outcome\" (PICO) questions were identified, leading to 41 recommendations regarding management of CS in adult patients. Seven recommendations were scored with high level of evidence (Grade 1), 11 with moderate level of evidence (Grade 2) and 17 with low level of evidence (Expert opinion). In 6 cases, the experts were not able to give an answer. All of the recommendations obtained strong agreement from the expert committee. The experts highlight the fact that optimal management of CS requires organization including a structured, multidisciplinary shock team and regional referral network, applying standardized protocols for diagnosis and staging. Early etiological treatment-such as culprit-lesion revascularization or urgent valve intervention-is central to improve outcomes. Hemodynamic support should prioritize norepinephrine as first-line vasopressor and privilege selective inotrope use. Temporary mechanical circulatory support (Impella, VA-ECMO) should be reserved for carefully selected patients following discussion by the expert team.
A contemporary overview of severe community-acquired bacterial infections in pediatric intensive care units
Michael Levy, Annelise Mary, Fleur Cour Andlauer, Jeremie Rousseaux, Lionel Berthomieu, Camille Brehin, Stephane Bechet, Montserrat Sierra-Colomina, Camille Aupiais, Francois Angoulvant, Elise Launay, Damien Dubois, Robert Cohen, Stephane Leteurtre, Caprice Study Group, Corinne Levy, Etienne Javouhey
Annals of Intensive Care, 2026, 16, pp.100112. ⟨10.1016/j.aicoj.2026.100112⟩
Article dans une revueAbstractBackground: Community-acquired bacterial infections (CABIs) remain a leading cause of pediatric morbidity and mortality. This study aimed to provide a contemporary description of pediatric CABIs requiring admission to pediatric intensive care units (PICUs) in France. Methods: The CAPRICE study is a prospective, multicenter cohort including all children with suspected CABIs who were admitted to 28 French PICUs from January to December 2024. Demographic, clinical, microbiologic, and outcome data were prospectively collected. The primary outcome was mortality at day 28 and secondary outcomes included sequelae at day 28, PICU length of stay, and total hospital stay. Independent predictors of mortality were identified by multivariable logistic regression. Results: Among 897 children, the median age was 1.9 years (IQR 0.2-8.8); 55% were male, and 30% had a chronic condition. The leading infections were lower respiratory tract infection (43%), meningitis (20%), and ear-nose-throat infections (13%). Septic shock occurred in 17% of cases. A pathogen was identified in 89% of cases: Bordetella pertussis (22%) and Mycoplasma pneumoniae (15%) were predominant, followed by Streptococcus pneumoniae (13%), and Staphylococcus aureus (11%). In all, 34% patients had viral co-infection and 70% required organ support. Overall mortality was 7%, increasing to 19% with septic shock. Independent predictors of death included multiple organ failure, meningitis, and B. pertussis infection. Sequelae occurred in 15% of survivors. Conclusions: Severe CABIs in French PICUs in 2024 were mainly caused by B. pertussis and M. pneumoniae, followed by S. pneumoniae and S. aureus. Mortality and morbidity of these infections remain substantial.
Development of capsaicin-derived prohibitin ligands to modulate the Aurora kinase A/PHB2 interaction and mitophagy in cancer cells
Amel Djehal, Claire Caron, Deborah Giordano, Valentina Pizza, Kimberley Farin, Angelo Facchiano, Laurent Désaubry, Giulia Bertolin
Communications Biology, 2026, ⟨10.1038/s42003-026-09573-3⟩
Article dans une revueAbstractAurora kinase A/AURKA is a serine/threonine kinase frequently overexpressed in cancer. Recent discoveries pointed to subcellular pools of AURKA, including at mitochondria. There, AURKA induces organelle clearance by mitophagy together with the autophagy mediator LC3, and its receptor PHB2.Here, we show that the natural product capsaicin modifies the AURKA/PHB2 interaction. We synthesize 16 capsaicin analogs, and Förster's Resonance Energy Transfer/Fluorescence Lifetime Imaging Microscopy (FRET/FLIM) in breast cancer cells reveals that compounds 12 and 13 increase the AURKA/PHB2 interaction. Molecular docking shows that they bind to the inhibitory pocket of PHB2 and to the AURKA active site. We demonstrate that compound 13 specifically inhibits mitophagy while leaving AURKA activation unaltered at centrosomes. Our results demonstrate that compound 13 is a PHB ligand acting on the AURKA/PHB2 interaction. Thanks to its specificity, it may lead to the development of anticancer drugs targeting the mitochondrial functions of AURKA.
Experts’ recommendations for the management of adult patients with cardiogenic shock
Nadia Aissaoui, Clément Delmas, Hamid Merdji, Guillaume Schurtz, Guillaume Baudry, Antoine Beurton, Florence Boissier, Laurent Bonello, Bernard Cholley, Nicolas Combaret, Alain Combes, Charles-Henri David, Daniel de Backer, Pierre Grégoire Guinot, Olfa Hamzaoui, Brahim Harbaoui, Julien Imbault, Nicolas Nesseler, Antoine Kimmoun, Michel Kindo, Guillaume Lebreton, Guillaume Leurent, Bruno Levy, Stéphane Manzo-Silberman, Anne-Céline Martin, Armand Mekontso-Dessap, Imane Adda, Joy Mootien, Alexandre Ouattara, Matteo Pozzi, Étienne Puymirat, François Roubille, Antonin Trimaille, Aurore Ughetto, Eric van Belle, Eric Bonnefoy, Khaldoun Kuteifan
Annals of Intensive Care, 2026, 16, pp.100038. ⟨10.1016/j.aicoj.2026.100038⟩
Article dans une revueAbstract<div><p>The last specific international European recommendations regarding the management of cardiogenic shock (CS) regardless of the etiology were issued over 10 years ago. We present herein recommendations for the management of CS in adults, developed using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system by an expert group of from the French Intensive Care Society [Societéde Reánimation de Langue Française (SRLF)] and the French Society of Cardiology [SocietéFrançaise de Cardiologie (SFC)], with the participation of the French Society of Anesthesia and Intensive Care [SocieteF rançaise d'Anestheśie et de Reánimation (SFAR)], and the French Society of Thoracic and Cardiovascular Surgery [SocietéFrançaise de Chirurgie Thoracique et Cardio-Vasculaire (SFCTCV)].</p><p>The recommendations covered six fields of application: CS teams and expert centers, symptomatic medical management, etiological management, organ support, temporary circulatory support and de-escalation and early post-CS management. Twenty-three "Patient Intervention Comparator Outcome" (PICO) questions were identified, leading to 41 recommendations regarding management of CS in adult patients. Seven recommendations were scored with high level of evidence (Grade 1), 11 with moderate level of evidence (Grade 2) and 17 with low level of evidence (Expert opinion). In 6 cases, the experts were not able to give an answer. All of the recommendations obtained strong agreement from the expert committee.</p><p>The experts highlight the fact that optimal management of CS requires organization including a structured, multidisciplinary shock team and regional referral network, applying standardized protocols for diagnosis and staging. Early etiological treatment-such as culprit-lesion revascularization or urgent valve intervention-is central to improve outcomes. Hemodynamic support should prioritize norepinephrine as first-line vasopressor and privilege selective inotrope use. Temporary mechanical circulatory support (Impella, VA-ECMO) should be reserved for carefully selected patients following discussion by the expert team.</p></div>
Evaluation of dual-function molecules containing both Zn-Ionophore and aggregation inhibition moieties for mutant p53 protein reactivation
Kalvin Kwan, Ashkan Saffari, Lauryn Grcic, Alfredo Acosta, Grace Leech, Benjamin Ma, Omar Castro-Sandoval, Christophe Orvain, Georg Mellitzer, Christian Gaiddon, Tim Storr
Journal of Inorganic Biochemistry, 2026, 274, pp.113088. ⟨10.1016/j.jinorgbio.2025.113088⟩
Article dans une revueAbstractThe p53 protein plays an important role in preventing cancer and is critical in inducing an antiproliferative response. Unfortunately, the p53 pathway is compromised in almost all cancers, and mutations to p53 lead to loss of function due to protein unfolding, compromised Zn2+ binding, aggregation and amyloid formation. Herein, two new multidentate N,O donor ligands LI-A and LH-A were tested to potentially restore Zn2+ binding to mutant p53, while also inhibiting protein aggregation. The design of these ligands centered on combining an iminodiacetate (IDA) metal binding moiety which was previously determined to exhibit favourable Zn2+ binding affinity and Cu2+/Zn2+ selectivity ratio, with a benzothiazole unit that has been demonstrated to limit mutant p53 protein aggregation. The new ligands were shown to exhibit Zn2+ Kd values in the low nM range based on a fluorophore competition assay, while also inhibiting mutant p53 aggregation via a Thioflavin-T (ThT) assay. In cell-based assays and NCI-60 screening, neither of the new ligands displayed significant cytotoxicity. A reactive oxygen species (ROS) assay showed that neither of the new ligands increased intracellular ROS, however, the previously studied LI compound did show an increase in ROS, providing further information on the mechanism of action of this class of compounds. The current results highlight that the dipicolylamine (DPA) unit is important for anticancer activity, and that phenolate substitution has an important role in dictating the mechanism of cytotoxicity.
The phosphatase activity of soluble epoxide hydrolase regulates vascular calcification through the metabolism of pyrophosphate anions
Hind Messaoudi, Olivier Varennes, Elodie Berg, Nicolas Perzo, Sylvanie Renet, Ghiles Chegrani, Thomas Duflot, Guillaume Feugray, Felix Lillich, Gilles Kauffenstein, Valéry Brunel, Isabelle Six, Romuald Mentaverri, Vincent Richard, Ignacio Anegon, Christophe Morisseau, Saïd Kamel, Ewgenij Proschak, Jérémy Bellien
Cell Death and Disease, 2025, Online ahead of print. ⟨10.1038/s41419-025-08390-6⟩
Article dans une revueAbstractWhile the hydrolase activity of soluble epoxide hydrolase (sEH) reduces vascular calcification, it is not known whether the phosphatase activity of sEH (sEH-P) is also involved. Pharmacological and genetic inhibition of sEH-P reduced the increased calcium deposition in rat aortic rings cultured under high-phosphate conditions. This was associated with decreased mRNA expression of the osteochondrogenic markers Msx2 and Sox9 . Deendothelialization of the aortic rings abolished this anticalcifying effect, while the calcification of human aortic smooth muscle cells was unaffected by sEH-P inhibition, suggesting a predominant role of the endothelium. Endothelial NO release did not appear to contribute, but an increased level of the calcification inhibitor pyrophosphate anions (PPi) was observed in the culture supernatant of aortic rings when sEH-P was inhibited. In vitro experiments demonstrated that PPi is a substrate of sEH-P, and that inhibiting sEH-P prevented the high-phosphate induced decrease of PPi in human aortic endothelial cells. Furthermore, the aortic calcification related to chronic kidney disease induced by subtotal nephrectomy was reduced in sEH-P-deficient rats compared to wild-type rats. This was associated with an improvement in flow-induced isolated mesenteric artery dilatation and a reduction of cardiac hypertrophy and fibrosis. Vascular calcification is regulated by sEH-P through the metabolism of endothelial PPi. The prevention of vascular calcification, together with the reduction in vascular dysfunction and cardiac remodeling, suggests that inhibiting sEH-P may help to prevent the cardiovascular complications associated with chronic kidney disease.
Myomerger-derived peptide enhances skeletal muscle tropism and reduces liver transduction of lipid nanoparticles for gene delivery
Jacqueline Ji, Eva Lipkow, Nicolas Anton, Corinne Crucifix, Pascal Eberling, Jocelyn Laporte
Molecular Therapy - Nucleic Acids, 2025, 37 (1), pp.102785. ⟨10.1016/j.omtn.2025.102785⟩
Article dans une revueAbstractLipid nanoparticles (LNPs) are emerging as nonviral vectors for gene therapy; yet, their strong liver tropism and lack of tissue specificity remain limiting. Here, we developed, through rational design, a skeletal muscle-targeted delivery platform by functionalizing LNPs with MyomP1, an extracellular conserved peptide derived from the muscle-specific fusogenic protein Myomerger. MyomP1-LNPs were engineered to encapsulate plasmid DNA or mRNA. In vitro, MyomP1 conjugation significantly increased transduction efficiency in murine and human myoblasts and myotubes. In vivo, MyomP1-LNPs significantly enhanced muscle transduction when delivering DNA cargo, strongly reduced liver accumulation following intramuscular and intravenous mRNA delivery, and attenuated local immune activation. This work demonstrates a ligand-guided strategy to overcome organ-specific barriers in nonviral gene transfer, with improved safety and specificity. It suggests that MyomP1-engineered LNPs hold strong potential to improve therapeutic outcomes for patients with rare muscle diseases, offering a promising alternative to traditional viral gene therapy platforms.
Assessing the Annual Risk of Recurrence Following Complete Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy (HIPEC) for Diffuse Malignant Peritoneal Mesothelioma Patients
Julien Péron, Ismail Essadi, Pascal Rousset, Laurent Villeneuve, Nazim Benzerdjeb, Diane Goéré, Isabelle Sourrouille, Olivia Sgarbura, Gwenaël Ferron, Marc Pocard, Frédéric Dumont, Jean-Marc Bereder, Cécile Brigand, Olivier Glehen, Vahan Kepenekian, Julio Abba, Karine Abboud, Adeline Aimé, Koceila Amroun, Thierry André, Catherine Arvieux, Gerlinde Averous-Lang, Naoual Bakrin, Armelle Bardier, Houda Ben Rejeb, Jean-Louis Bernard, Frédéric Bibeau, Valérie Boige, Pierre-Emmanuel Bonnot, Olivier Bouché, Fatiha Bouhidel, Marie-Dominique Bouzard, Chloé Broudin, Bertrand Celerier, Cécilia Ceribelli, Aurélie Charissoux, Anne Chevallier, Elise Clément, Julien Coget, Thomas Courvoisier-Clément, Peggy Dartigues, Marie Dazza, Cécile de Chaisemartin, Frédéric Di Fiore, Sylvaine Durand-Fontanier, Clarisse Eveno, Anne-Cécile Ezanno, Olivier Facy, Juliette Fontaine, Johann Gagnière, Alexandre Galan, Maximiliano Gelli, Laurent Ghouti, Laurence Gladieff, Jean-Marc Guilloit, Frédéric Guyon, Bruno Heyd, Marie-Françoise Heymann, Claire Illac-Vauquelin, Sylvie Isaac, Rachid Kaci, Lakhdar Khellaf, Reza Kianmanesh, Marie-Hélène Laverrière, Jérémie Lefevre, Bernard Lelong, Anne-Isabelle Lemaistre, Agnès Leroux-Broussier, Brice Malgras, Frédéric Marchal, Pascale Mariani, Antoine Mariani, Clémentine Mazoyer, Pierre Meeus, Eliane Mery, Fabrice Narducci, Stéphanie Nougaret, David Orry, Pablo Ortega-Deballon, Ariadna Paliichuk, Brice Paquette, Patrice Peyrat, Denis Pezet, Nicolas Pirro, Flora Poizat, François Quenet, Thomas Rabel, Judith Raimbourg, Patrick Rat, Pauline Ries, Brigitte Roche, Pierre-Yves Sage, Cristina Smolenschi, Magali Svrcek, Abdelkader Taibi, Emilie Thibaudeau, Yann Touchefeu, Bertrand Trilling, Jean-Jacques Tuech, Séverine Valmary-Degano, Sharmini Varatharajah, Véronique Verriele-Beurrier, Guillaume Vogin, Romuald Wernert, Benoit You
Annals of Surgical Oncology, 2025, 32 (13), pp.9731-9740. ⟨10.1245/s10434-025-18196-7⟩
Article dans une revueAbstractSelected diffuse malignant peritoneal mesothelioma (DMPM) patients may be radically treated with complete cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC). Two thirds of them recur with the possibility of iterative CRS-HIPEC and/or systemic chemotherapy. The postoperative follow-up management is based on scarce data. The recurrence profile was explored in a large national database to challenge the standard follow-up protocol.
Characteristics of emergency nurse practitioner professional identity: A multicenter qualitative study
Aline Chenou, Loïc Brillouet, Stéphane Guillon, Pascal Bilbault, Thierry Pelaccia
International Journal of Nursing Studies Advances, 2025, 9, pp.100384. ⟨10.1016/j.ijnsa.2025.100384⟩
Article dans une revueBiomimetic Glycosaminoglycan-Enriched Electrospun Polymeric Scaffolds for Enhanced Early Tissue Regeneration
Morgane Meyer, Rana Smaida, Henri Favreau, Cristina Yus, Hervé Gegout, Manuel Arruebo, Nadia Bahlouli, Guy Ladam, Guillaume Conzatti, Stephan Lemmens, Guoqiang Hua, Florence Fioretti, Nadia Benkirane-Jessel
Journal of Functional Biomaterials, 2025, 16 (12), ⟨10.3390/jfb16120447⟩
Article dans une revueAbstractImplantable scaffolds are increasingly recognized as transformative tools in regenerative medicine, offering the potential to prevent or mitigate tissue degeneration. Osteoarthritis is a widespread degenerative joint disease that often progresses from early focal lesions to severe joint damage, creating substantial clinical and socioeconomic burdens. Preventive strategies for early-stage lesions remain limited. This study reports the design and development of a functional polymeric scaffold intended to support early tissue regeneration and potentially prevent lesion progression. The scaffold consists of an electrospun poly (ε-caprolactone) nanofibrous membrane enriched with glycosaminoglycans, including hyaluronic acid and chondroitin sulfate, to mimic essential features of the cartilage extracellular matrix and provide a supportive microenvironment. Complete structural, physicochemical, and mechanical characterization was performed to assess the scaffold architecture, stability, hydration properties, and suitability for tissue environments. In vitro investigations were conducted to evaluate cytocompatibility and the interaction of the scaffold with relevant cell types. The scaffold is designed as a potential future preventive strategy to support cartilage integrity and limit disease progression. This approach represents a promising strategy to preserve joint integrity and function, addressing a critical unmet clinical need and enabling translation toward clinical application.
Inverse Correlation between Endoplasmic Reticulum Stress Intensity and Antitumor Immune Response with Ruthenium(II)-Based Photosensitizers for the Photodynamic Therapy of Head and Neck Squamous Cell Carcinoma
Chloé Thibaudeau, Cyril Bour, Matthieu Scarpi-Luttenauer, Pierre Mesdom, Johannes Karges, Albert Gandioso, Lei Zhou, Sébastien Harlepp, Alexandre Detappe, Mickaël Burgy, Sophie Martin, Georg Mellitzer, Christian Gaiddon, Gilles Gasser, Alain C Jung
Journal of Medicinal Chemistry, 2025, ⟨10.1021/acs.jmedchem.5c02147⟩
Article dans une revueAbstractPhotodynamic therapy (PDT) is a promising strategy for head and neck squamous cell carcinoma (HNSCC), but the immune consequences of tumor cell death remain incompletely understood. We compared two ruthenium(II) polypyridine photosensitizers (PSs) in HNSCC models and found that both were potently phototoxic (nanomolar IC 50 s), triggered diverse cell death pathways (including autophagy and ferroptosis), and promoted hallmark danger signals of immunogenic cell death (ICD). Strikingly, only one PS induced apoptosis and strong endoplasmic reticulum (ER) stress, yet paradoxically led to immune tolerance in vivo. Conversely, the PS that did not induce apoptotic cell death with milder stress responses resulted in a better antitumor immunity in vivo. These unexpected findings challenge the prevailing view that PDT-triggered apoptosis and ER stress are essential for ICD. Our study underscores the complexity of PDT-induced cell death balance and immunogenic signals and highlights the need to redefine ICD-inducing criteria for the rational design of next-generation PSs.
Three-Dimensional Models of the Dental Pulp: Bridging Fundamental Biology and Regenerative Therapy
Rana Smaida, Guoqiang Hua, Nadia Benkirane-Jessel, Florence Fioretti
International Journal of Molecular Sciences, 2025, 26 (22), ⟨10.3390/ijms262210960⟩
Article dans une revueAbstractThe dental pulp is a dynamic connective tissue essential for tooth vitality, sensory function, immune defense, and reparative dentinogenesis. Conventional endodontic procedures, while effective in eradicating infection, often result in a non-functional, devitalized tooth, highlighting the need for biologically based regenerative approaches. The emergence of three-dimensional (3D) culture systems has transformed pulp biology and endodontic research by providing physiologically relevant microenvironments that better reproduce the dentino-pulp interface, vascular and neural networks, and immune interactions. This review synthesizes current advances in 3D dental pulp modeling, from scaffold-based and hydrogel systems to spheroids, organoids, bioprinted constructs, and microfluidic "toothon-a-chip" platforms. Each system's composition, biological relevance, and translational potential are critically examined with respect to odontogenic differentiation, angiogenesis, neurogenesis, and inflammatory response. Applications in disease modeling, biomaterial screening, and regenerative endodontics are highlighted, showing how these models bridge fundamental biology and therapeutic innovation. Finally, we discuss key challenges including vascularization, innervation, standardization, and clinical translation, and propose integrative strategies combining bioprinting, stem-cell engineering, and organ-on-chip technologies to achieve functional pulp regeneration. Overall, 3D pulp models represent a paradigm shift from reductionist cultures to bioinstructive, patient-relevant platforms that accelerate the development of next-generation endodontic therapies.
Managing Cytomegalovirus Infection in Lung Transplant Recipients in Real Life: Results of a French Multicenter Survey
Tiphaine Goletto, Kinan El Husseini, Antoine Roux, Mathilde Briard, Gaelle Dauriat, Benjamin Renaud-Picard, Claire Merveilleux Du Vignaux, Loic Falque, Benjamin Coiffard, Thomas Villeneuve, Xavier Demant, Adrien Tissot, Domitille Mouren, Francois M Carlier, Sophie Alain, Jonathan Messika, Vincent Bunel
Transplant International, 2025, 38, pp.15224. ⟨10.3389/ti.2025.15224⟩
Article dans une revueAcute Effects of Polyphenol-Rich Fruit Juice on Exercise Capacity and Vessels Dilatation in Healthy Humans: A Randomized, Controlled, Crossover Study
Olivier Rouyer, Anne-Laure Charles, Cyril Auger, Samy Talha, Emmanuel Andres, Anne Charloux, Valerie Schini-Kerth, Bernard Geny
Applied Sciences, 2025, 15 (21), pp.11553. ⟨10.3390/app152111553⟩
Article dans une revueAbstractThis study examined the acute effects of polyphenol (PP)-rich fruit juice supplementation on the exercise capacity of healthy humans. Thirty-five healthy, sedentary volunteers participated in this randomized, controlled, crossover study. They performed a 6 min walk test two hours after consuming 200 mL of a PP-rich fruit juice (fruit juice) or a PP-poor control juice (apple), separated by a one-week washout. In addition to monitoring the heart rate during exercise, we determined the reactive hyperemia index (RHI), an indicator of vascular dilatation that contributes to exercise capacity. The distance walked during the 6 min test tended to be greater after the consumption of the PP-rich juice, compared to the PP-poor juice (588 ± 15 vs. 561 ± 14 m, respectively). The increase in heart rate was similar in both situations. The RHI increases were similar after both juices’ intake at 1 h, but after 2 h, the RHI increase was significant only after the PP-rich juice intake (from 6.78 ± 0.46 to 8.47 ± 0.47, p < 0.001). In conclusion, acute consumption of PP-rich juice increases vessel dilatation and tends to improve exercise capacity. These data support further studies to determine whether greater consumption of PP-rich fruit juices could improve exercise capacity in healthy subjects.
Human assembloid of human blood vessel organoids with pancreatic islets improves insulin secretion over time ex vivo
Emily Tubbs, Mahira Mehanović, Mélanie Lopes, Clément Quintard, Stéphanie Combe, Clara Pirlian, Mathieu Armanet, Thomas Domet, Julia Sabatier, Sabrina Granziera, Karim Bouzakri, William Bietiger, Delphine Freida, Josef Penninger, Xavier Gidrol
Cell Reports, 2025, 44 (10), pp.116378. ⟨10.1016/j.celrep.2025.116378⟩
Article dans une revueAbstractPancreatic islet transplantation is a promising treatment strategy for type 1 diabetes patients; however, there are still major challenges to overcome, including vascularization. Despite a substantial need to understand the islet graft decline observed in patients 5–10 years post transplantation, clinical translation remains challenging, probably because of species-specific features and the lack of in vitro vascularized models. Here, we report results of a human assembloid composed of self-organizing 3D blood vessel organoids (BVOs) with human pancreatic islets. We demonstrate that co-culture of islets and BVOs ex vivo leads to an auto-organized assembloid (by light-sheet fluorescence microscopy) and improves insulin secretion over time (functionality assays) on 5 independent human islet donors (from 3 different hospital facilities). Taken together, this study could accelerate our understanding of type 1 diabetes and facilitate therapeutic development for type 1 diabetes patients.
Endometriosis and cardiovascular disease
Benjamin Marchandot, Anais Curtiaud, Kensuke Matsushita, Antonin Trimaille, Aline Host, Emilie Faller, Olivier Garbin, Chérif Akladios, Laurence Jesel, Olivier Morel
European Heart Journal Open, 2025, 2 (1), pp.oeac001. ⟨10.1093/ehjopen/oeac001⟩
Article dans une revueAbstractEndometriosis is a chronic gynaecological disease affecting 1 in 10 reproductive-age women. It is defined as the presence of endometrium-like tissue outside the uterus. Beyond this placid anatomical definition, endometriosis is a complex, hormonal, inflammatory, and systemic condition that poses significant familial, psychological, and economic burden. The interaction between the cardiovascular system and endometriosis has become a field of interest as the underlying mutual mechanisms become better understood. On the basis of accumulating fundamental and clinical evidence, it is likely that there exists a close relationship between endometriosis and the cardiovascular system. Therefore, investigating the endometriosis-cardiovascular interaction is highly clinically significant. In this review, we highlight our current understanding of the pathophysiology of endometriosis with systemic hormonal, pro-inflammatory, pro-angiogenic, immunologic, and genetic processes beyond the peritoneal microenvironment. Additionally, we provide current clinical evidence about how endometriosis interacts with cardiovascular risk factors and cardiovascular disease (CVD). To date, only small associations between endometriosis and CVD have been reported in observational studies, inherently limited by the potential influence of unmeasured confounding. Cardiovascular disease in women with endometriosis remains understudied, under-recognized, and underdiagnosed. More detailed study of the cardiovascular-endometriosis interaction is needed to fully understand its clinical relevance, underlying pathophysiology, possible means of early diagnosis and prevention.
Vaccine-induced immune thrombotic thrombocytopenia: current evidence, potential mechanisms, clinical implications, and future directions
Benjamin Marchandot, Anais Curtiaud, Antonin Trimaille, Laurent Sattler, Lelia Grunebaum, Olivier Morel
European Heart Journal Open, 2025, 1 (2), pp.oeab014. ⟨10.1093/ehjopen/oeab014⟩
Article dans une revueAbstractVaccine-induced immune thrombotic thrombocytopenia (VITT) (also termed thrombosis with thrombocytopenia syndrome or vaccineinduced thrombotic thrombocytopenia or vaccine-induced immune thrombocytopenia) is characterized by (i) venous or arterial thrombosis; (ii) mild-to-severe thrombocytopenia; (iii) positive antiplatelet factor 4 (PF4)–polyanion antibodies or anti-PF4–heparin antibodies detected by the HIT (heparin-induced thrombocytopenia) ELISA; (iv) occurring 5–30 days after ChAdOx1 nCoV-19 (AstraZeneca) or Ad26.COV2.S (Johnson & Johnson/Janssen) vaccination. VITT’s incidence is 1 per 100 000 vaccinated people irrespective of age and up to 1 in 50 000 for people <50 years of age with the AstraZeneca COVID-19 vaccine. The exact mechanism by which adenovirusvectored COVID-19 vaccines trigger this syndrome is still unclear, as for the increased risk for acute cerebral sinus venous thrombosis and splanchnic vein thrombosis as compared to other locations of venous thrombotic events. VITT is associated with the detection of anti-PF4 antibodies, unrelated to previous use of heparin therapy. PF4 antibodies are thought to activate platelets via the platelet FccRIIA receptors leading to further platelet activation that causes thrombosis and thrombocytopenia.
Functionalization of lipid nanoemulsions with humanized antibodies using plug-and-play cholesterol anchor for targeting cancer cells
Valeria Jose Boide-Trujillo, Vincent Mittelheisser, Fei Liu, Olivier Lefebvre, Bohdan Andreiuk, Nicolas Anton, Jacky G Goetz, Andrey S Klymchenko
Nanoscale Advances, 2025, 7 (22), pp.7226 - 7238. ⟨10.1039/d5na00606f⟩
Article dans une revueAbstractLipid nanoemulsions (NEs) are promising green nanocarriers for diagnostic and therapeutic applications, but their functionalization with biomolecules, such as antibodies, remains a challenge due to liquid nature of their core. Here, we developed an original plug-and-play strategy to graft an antibody (trastuzumab) at the surface of NEs, using components generally recognized as safe (GRAS). We synthesized a reactive 4nitrophenyl carbonate of cholesterol (NPC-Chol) and a Biotin-PEG 3000 -Lysine linker, which can react within one-pot formulation to form an amphiphilic carbamate Biotin-PEG 3000 -Cholesterol. The cholesterol ensures anchorage of the linker, which effectively exposes biotin moiety at the surface of NEs for further antibody grafting using a biotin-neutravidin coupling. The reaction between the Biotin-PEG 3000 -Lysine linker and NPC-Chol was confirmed by 1 H-NMR and absorption spectroscopy. The obtained biotinylated 50-nm NEs loaded with a near-infrared dye were successfully targeted to neutravidin-coated glass surfaces and imaged at the single-droplet level. The biotinylated NEs bearing the trastuzumab antibody targeted specifically HER2-amplified breast cancer models HCC-1954 and SKBR3, in contrast to control MDA-MB-231 (HER2-low) cells. Altogether, our study proposes an efficient methodology for grafting antibodies to the surface of NEs, which offers new opportunities of application of these green nanocarriers in biomedicine.
Acute respiratory failure unmasking an unexpected disease
Loïc Velten, Anaïs Curtiaud, Antoine Studer, Hamid Merdji
Intensive Care Medicine, 2025, 51 (11), pp.2159-2161. ⟨10.1007/s00134-025-08093-8⟩
Article dans une revueIdentification of prokineticin‐2 as potential pharmacodynamic biomarker for overcoming doxorubicin resistance in multicellular breast cancer spheroids
Martina Vincenzi, Amin Kremic, Nathalie N Tscheiller, Po‐yen Hsu, Michael W Y Chan, Roberta Lattanzi, Canan G Nebigil
British Journal of Pharmacology, 2025, Online ahead of print. ⟨10.1111/bph.70204⟩
Article dans une revueAbstractBackground and purpose: Despite advances in immunotherapy, doxorubicin (Dox) chemotherapy is still the irreplaceable first-line therapy for solid tumours such as breast cancer. However, chemotherapy resistance is the major limiting factor, requiring the use of high doses of Dox to achieve the anti-tumour actions, often leading to severe side effects. Unravelling the mechanisms behind chemoresistance and identifying potential biomarkers for mitigating this resistance could enhance current treatment strategies and improve patient outcomes. Experimental approach: We developed human 3D breast cancer spheroids (HBCSs) as a model that closely mimics in vivo tumour structure and microenvironment. Given that hypoxia and elevated levels of the angiogenic cytokine, prokineticin-2 (PK2), are associated with chemoresistance to antiangiogenic therapy, we explored the effect of a hypoxia-inducible factor (HIF-1α) inhibitor on viability defect in HBCSs and the levels of PK2 in the conditioned medium following Dox treatment. We also assessed levels of HIF-1α, active caspase-3, TUNEL and reactive oxygen species (ROS), and CD73 enzymatic activity in HBCSs. Key results: Results showed that HIF-1α inhibitor increased viability defect in the Dox-resistant HBCSs. Interestingly, at higher Dox concentrations, chemoresistance was mitigated independently of HIF-1α and promoted apoptosis and ROS accumulation, which were correlated with PK2 release. Conclusions and implications: Our findings provide the first evidence that PK2 may serve as a predictive pharmacodynamic marker, offering a potential strategy to overcome drug resistance in targeted cancer therapy.
Is MUC5B rs35705950 promoter polymorphism associated with chronic lung allograft dysfunction?
Adèle Sandot, Ibrahima Ba, Clément Massonnaud, Raphaël Borie, Benjamin Renaud-Picard, Benjamin Coiffard, Xavier Demant, Loïc Falque, Antoine Roux, Jérôme Le Pavec, Adrien Tissot, Claire Merveilleux, Thomas Villeneuve, Christiane Knoop, Vincent Bunel, Nicolas Carlier, David Lair, Pierre Mordant, Caroline Kannengiesser, Jonathan Messika
ERJ Open Research, 2025, 11 (5), pp.00006-2025. ⟨10.1183/23120541.00006-2025⟩
Article dans une revueAbstractBackground : Chronic lung allograft dysfunction (CLAD) is the main cause of death following lung transplantation (LT). Its pathophysiology and risk factors remain poorly understood. Donor or recipient genetic characteristics could be involved. MUC5B promoter rs35705950 polymorphism is one of the major genetic factors associated with pulmonary fibrosis. We aimed to correlate the MUC5B genotype of recipients and donors with LT outcomes. Methods : Recipient and donor blood samples from the Cohort in Lung Transplantation biobank were used. MUC5B status was determined by quantitative PCR using probes for rs35705950 polymorphism. CLAD occurrence and phenotype were blindly adjudicated. Results : 210 recipient–donor pairs were analysed. At 5 years, 68 patients (32.4%) had CLAD. The MUC5B rs35705950 polymorphism, whether in the donor or the recipient, was not associated with CLAD at 5 years (OR 1.07 (95% CI 0.53–2.11), p=0.8, and OR 0.79 (95% CI 0.37–1.60), p=0.5, respectively), CLAD-free survival or CLAD phenotype. The prevalence of the recipients’ T allele differed among underlying respiratory diseases (20.0% in interstitial lung disease, 8.4% in emphysema, 13.4% in cystic fibrosis and 5.6% for others, p=0.03). Risk of antibody-mediated rejection (AMR) was independent of the donor MUC5B polymorphism genotype, whereas the presence of the T allele in the recipient was associated with a reduced occurrence of AMR (OR 0.26 (95% CI 0.08–0.69), p=0.015). Conclusion : MUC5B rs35705950 polymorphism in the donor or the recipient does not affect LT outcomes. The significant association between the recipients’ polymorphism and reduced AMR occurrence has yet to be confirmed.
Clinical impact of congestion in patients admitted for cardiogenic shock
Miloud Cherbi, François Roubille, Eric Bonnefoy, Paul Gautier, Etienne Puymirat, Guillaume Baudry, Bruno Levy, Pascal Lim, Laurent Bonello, Hamid Merdji, Meyer Elbaz, Clément Delmas
Archives of cardiovascular diseases, In press, ⟨10.1016/j.acvd.2025.08.006⟩
Article dans une revueAbstract<div><p>Background: Recent guidelines have proposed dichotomizing acute heart failure and cardiogenic shock phenotypes based on signs/symptoms of hypoperfusion/congestion. Aim: We aimed to assess the prognostic significance of congestion and its early evolution during the first 24 hours in a nationwide cardiogenic shock cohort. Methods: FRENSHOCK was a prospective registry including 772 patients with cardiogenic shock from 49 centres. Patients were classified as cold and wet or cold and dry according to congestive signs. Death at 30 days was analysed according to baseline phenotype.</p><p>Results: Among 593 patients with cardiogenic shock included, 70.7% were male; the median age was 67.0 (58.0-77.0) years, and 521 patients (87.9%) presented with congestion. Congestive patients had higher rates of previous cardiac disease (60.5% vs. 43.1%; P < 0.01) and chronic kidney disease (24.2% vs. 12.5%; P = 0.04). No differences were found regarding Society for Cardiovascular Angiography and Interventions class distribution and lactate concentrations. Congestion was associated with an increased 30-day all-cause death rate (hazard ratio: 1.99, 95% confidence interval: 1.05-3.78; P = 0.04), particularly among patients with persistent congestion beyond 24 hours (hazard ratio: 2.29, 95% confidence interval: 1.20-4.36; P = 0.01). Conversely, patients with resolved congestion at 24 hours had similar outcomes to non-congestive patients (hazard ratio: 0.76, confidence interval: 0.31-1.88; P = 0.56). The negative impact of congestion was confirmed in multivariable Cox regression analysis. Conclusions: Congestion and its persistence beyond 24 hours of management are frequent in patients with cardiogenic shock, and are significantly associated with an increased 30-day all-cause death rate, which may reflect either a direct harmful effect of congestion or difficulties in achieving decongestion in sicker patients. Further studies are warranted to clarify optimal decongestion strategies in patients with cardiogenic shock.</p></div>
Sphingolipids in Extracellular Vesicles Released From the Skeletal Muscle Plasma Membrane Control Muscle Stem Cell Fate During Muscle Regeneration
Rhyma Hakkar, Caroline E Brun, Pascal Leblanc, Emmanuelle Meugnier, Emmanuelle Berger‐danty, Olivier Blanc‐brude, Stefano Tacconi, Audrey Jalabert, Laura Reininger, Sandra Pesenti, Catherine Calzada, Vincent Gache, Sanjay B Vasan, Julien Pichon, Thibaut Larcher, Elizabeth Errazuriz‐cerda, Christelle Cassin, Bong Hwan Sung, Alissa Weaver, Antonella Bongiovanni, Karl Rouger, Jean‐paul Pais de Barros, Karim Bouzakri, Sophie Rome
Journal of Extracellular Vesicles, 2025, 14 (9), ⟨10.1002/jev2.70164⟩
Article dans une revueAbstractExtracellular vesicles (EVs) represent a cytokine-independent pathway though which skeletal muscle (SkM) cells influence the fate of neighbouring cells, thereby regulating SkM metabolic homeostasis and regeneration. Although SkM-EVs are increasingly being explored as a therapeutic strategy to enhance muscle regeneration or to induce the myogenic differentiation of induced pluripotent stem cells (iPSCs), the mechanisms governing their release from muscle cells remain poorly described. Moreover, because muscle regeneration involves a tightly regulated inflammatory response it also important to determine how inflammation alters SkM-EV cargo and function in order to design more effective EV-based therapies. To address this knowledge gap, we isolated and characterized the large and small EVs (lEVs, sEVs) released from SkM cells under basal conditions and in response to TNF-α, a well-established inflammatory mediator elevated in both acute muscle injury and chronic inflammatory conditions such as type 2 diabetes. We then evaluated the regenerative roles of these EV subtypes in vivo using a mouse model of cardiotoxin-induced muscle injury, with a specific focus on their bioactive sphingolipid content. Using transmission, scanning or cryo-electron microscopy, lipidomic profiling and an adenoviral construct to express labelled CD63 in myotubes, we demonstrated that SkM cells release both sEVs and lEVs primarily from the plasma membrane. Notably, sEVs were generated from specialized membrane folds enriched in the EV markers ALIX (ALG-2 interacting protein X) and TSG101, as well as lipid raft-associated lipids. During regeneration, sEVs promoted M1 macrophage polarization and migration and muscle stem cell (MuSC) differentiation, thereby accelerating muscle repair. In contrast, lEVs inhibited and promoted MuSC proliferation and impaired the transition from the pro-inflammatory to the anti-inflammatory response, an essential step for promoting MuSC differentiation. Treatment of isolated muscle fibres with SkM-EVs revealed that the distinct effects of sEVs and lEVs on MuSC behaviour and macrophage phenotype could be largely explained by differences in their lipid composition, particularly the ratio of sphingosine-1-phosphate (S1P) subspecies. However, TNF-α exposure altered these ratios in sEVs and impaired their regenerative functions on MuSC and their effect on macrophage migration and polarization. These results demonstrate for the first time the importance of the sphingolipid content of EVs released by skeletal muscle in their regenerative function within muscle tissue, largely explained by their role as carriers of different subspecies of sphingosine-1-phosphate. This suggests that modulating the sphingolipid composition of EVs could be a viable strategy to enhance the regenerative potential of muscle tissue in addition to therapeutic interventions.
Variants in the DDX6-CXCR5 autoimmune disease risk locus influence the regulatory network in immune cells and salivary gland
Mandi Wiley, Marcin Radziszewski, Bhuwan Khatri, Michelle Joachims, Kandice Tessneer, Anna Stolarczyk, Songyuan Yao, James Li, Cherilyn Pritchett-Frazee, Audrey Johnston, Astrid Rasmussen, Juan-Manuel Anaya, Lara Aqrawi, Sang-Cheol Bae, Eva Baecklund, Albin Björk, Johan Brun, Sara Magnusson Bucher, Nick Dand, Maija-Leena Eloranta, Fiona Engelke, Helena Forsblad-d'Elia, Cecilia Fugmann, Stuart Glenn, Chen Gong, Jacques-Eric Gottenberg, Daniel Hammenfors, Juliana Imgenberg-Kreuz, Janicke Liaaen Jensen, Svein Joar Auglænd Johnsen, Malin Jonsson, Jennifer Kelly, Sharmily Khanam, Kwangwoo Kim, Marika Kvarnström, Thomas Mandl, Javier Martín, David Morris, Gaetane Nocturne, Katrine Brække Norheim, Peter Olsson, Øyvind Palm, Jacques-Olivier Pers, Nelson Rhodus, Christopher Sjöwall, Kathrine Skarstein, Kimberly Taylor, Phil Tombleson, Gudny Ella Thorlacius, Swamy Venuturupalli, Edward Vital, Daniel Wallace, Lida Radfar, Michael Brennan, Judith James, R Hal Scofield, Patrick Gaffney, Lindsey Criswell, Roland Jonsson, Silke Appel, Per Eriksson, Simon Bowman, Roald Omdal, Lars Rönnblom, Blake Warner, Maureen Rischmueller, Torsten Witte, a Darise Farris, Xavier Mariette, Caroline Shiboski, Marie Wahren-Herlenius, Marta Alarcón-Riquelme, Wan-Fai Ng, Kathy Sivils, Joel Guthridge, Indra Adrianto, Timothy Vyse, Betty Tsao, Gunnel Nordmark, Christopher Lessard, Helena Forsblad-D’elia, R. Hal Scofield, A. Darise Farris
Annals of the Rheumatic Diseases, 2025, 84 (9), pp.1512-1527. ⟨10.1016/j.ard.2025.04.023⟩
Article dans une revueAbstractSjögren's disease (SjD) and systemic lupus erythematosus (SLE) share genetic risk at the DDX6-CXCR5 locus (11q23.3). Identifying and functionally characterising shared SNPs spanning this locus can provide new insights into common genetic mechanisms of autoimmunity.
Evaluation of a Gel Loaded With M101 on Bone and Peri‐Implantitis Healing: An Experimental In Vivo Study
Céline Stutz, Catherine Petit, Pierre-yves Gegout, Camille Le Gall, Maria Permuy, Mónica López-Peña, Fernando Muñoz, Mario García González, Bénédicte Puissant, Yves Renaudineau, Franck Zal, Elisabeth Leize-Zal, Olivier Huck
Clinical Oral Implants Research, 2025, ⟨10.1111/clr.70022⟩
Article dans une revueAbstractABSTRACT Objectives The aim of this study was to evaluate the effect of M101 gel in bone and peri‐implantitis healing and its safety of use. Materials and Methods M101 gel and solution (1 g/L) were evaluated in four different models: (i) human osteoblast culture; (ii) mouse calvarial defect; (iii) extraction model in dogs; (iv) peri‐implantitis model in dogs. M101 cytocompatibility was evaluated in osteoblasts, and expression of ALP, Runx2, and BMP‐2 was determined. Calvarial defect was induced in mice by bone drilling, and healing was evaluated after 5 weeks. In dogs, peri‐implantitis was treated by non‐surgical and surgical approaches with or without M101 gel application. Analyses were performed after 2 months. Socket healing was evaluated by micro‐CT after tooth extraction. Local and systemic responses were evaluated after gel administration and intravenous injection. Results The cytocompatibility of M101 was confirmed in osteoblasts, and ALP, Runx2, and BMP‐2 gene expression was increased after exposure ( p < 0.05). In mice, calvarial bone defect healing was 1.6 folds more in the M101 gel treated group than in the untreated group ( p < 0.001). In the extraction model, the local M101 gel application and systemic M101 administration did not induce an immunological response. In the peri‐implantitis dog model, M101 gel as an adjuvant to non‐surgical treatment led to improved PiPD reduction ( p < 0.05) when compared to non‐surgical treatment without M101 gel. No difference was observed when used as an adjunct to surgical treatment. Conclusion M101 may be a safe and interesting candidate as an adjuvant to improve bone healing and non‐surgical treatment in peri‐implantitis.
Zirconia Preformed Paediatric Crown Versus Stainless Steel Crown in Primary Molars: A Randomized Controlled Split‐Mouth Trial
Michèle Muller-Bolla, Caroline Delfosse, Emmanuelle Esclassan, Sibylle Vitale, François Clauss, Frederic Courson, Patrick Rouas, Dominique Droz, Clara Joseph, Thomas Trentesaux, Mathieu Marty, Arabelle Gouvernaire-Vanderzwalm, Violaine Smaïl-Faugeron, Elsa Garot, Marion Strub, Magali Hernandez, Sylvie Dajean-Trutaud, Elody Aïem, Serena Lopez, Ana Miriam Velly
International Journal of Paediatric Dentistry, 2025, 36 (1), pp.49-58. ⟨10.1111/ipd.70026⟩
Article dans une revueAbstractObjectives This split‐mouth multicentre randomized controlled trial (RCT) aimed to compare the clinical and radiographic success rates of zirconia crowns (ZCs) and stainless steel crowns (SSCs) on primary molars. Secondary objectives were to compare the study groups in terms of retention and preferences of both parents and children. Methods In 105 children, 210 teeth were randomized to receive either ZC or SSC. The primary outcome success rate was defined by the absence of major failure, such as signs of irreversible pulpitis or infectious complications, over a 2‐year follow‐up period. Secondary outcomes included retention rate and participant preference. Data were analyzed with Poisson regression, paired t ‐tests, and ANCOVA, with the significance level set at 5%. Results Success rates were comparable between the ZC and SSC groups (Rate Ratio [RR] = 0.99, 95% confidence interval [CI]:0.96–1.01, p = 0.350). Retention rate was lower for ZCs compared to SSCs (RR = 0.95, 95% CI:0.92–0.98, p = 0.001). Approximately two‐thirds of parents preferred ZCs, while children did not show a clear preference for either type of crown. Conclusions The success rate between ZC and SSC was similar over 2 years, but ZC showed lower retention. Unlike children, parents tended to prefer ZC.
Evolution of Clinical Trials in Anticoagulation for Sepsis: Bridging Past to Future
Toshiaki Iba, Julie Helms, Cheryl Maier, Ricard Ferrer, Jerrold Levy
Seminars in Thrombosis and Hemostasis, 2025, 52 (01), pp.126-138. ⟨10.1055/a-2657-6380⟩
Article dans une revueAbstractDemonstrating the efficacy of new treatments in any condition may be a challenging endeavor, and is particularly the case in sepsis. In the early 21st century, recombinant activated protein C showed a survival benefit in severe sepsis; however, subsequent studies could not replicate these results, leading to the discontinuation of this agent. Several potential reasons have been proposed for the unfavorable results of trials, including choosing an inappropriate outcome target. Concerning anticoagulant therapies, some studies have targeted sepsis with disseminated intravascular coagulation (DIC) and demonstrated clinical benefits, while other studies have focused on severe sepsis or septic shock independent of whether patients had DIC. The timing for treatment initiation, dosage, and duration of anticoagulant agents could be significant factors contributing to the limitations faced in these trials. Moreover, relying solely on 28-day mortality as the primary endpoint for sepsis trials may not be appropriate, as it can be influenced by various factors beyond anticoagulant therapies, and discernment in a shorter period might be more pertinent. Success in clinical trials is more likely if these issues are addressed and improvements are made. Recent clinical trials concentrating on anticoagulants are increasingly targeting sepsis or septic shock with coagulopathy, and adopting composite endpoints, including DIC resolution, is anticipated to overcome some of these challenges.
Intact Fish Skin Graft for Deep Diabetic Foot Ulcers: results from the KEREFISH randomized controlled trial
Dured Dardari, Louis Potier, Ariane Sultan, Maud Francois, Jocelyne M’bemba, Benjamin Bouillet, Lucy Chaillous, Laurence Kessler, Aurélie Carlier, Abdulkader Jalek, Ayoub Sbaa, Hilmar Kjartansson, Baldur Tumi Baldursson, Guillaume Charpentier, John Lantis
Diabetes & Metabolism, 2025, 51 (6), pp.101691. ⟨10.1016/j.diabet.2025.101691⟩
Article dans une revueAbstractIntroduction: The main objective : To assess the efficacy of Intact fish skin graft (IFSG) for the closure of University of Texas (UT) Grade 2 and 3 Diabetic foot ulcers (DFUs) versus local standard of care (SOC). Methods: In the French subgroup of a multinational randomized trial, 180 (179 in primary endpoint analysis) patients with UT grade 2 and 3 DFUs (8 centers) were randomized to receive IFSG or SOC, that adhered to the International Working Group on the Diabetic Foot (IWGDF) guidelines. Primary endpoint was complete epithelialization at 16 weeks. Secondary endpoints were healing curve, percentage of wounds healed to 80 % or more in an average of 16 weeks, percentage healed at 20 weeks. Results: The primary endpoint was 41.6 % closure rate in IFSG group versus 22.2 % in SOC group (P = 0.0053). In the intent to treat analysis (ITT), there was a statistically significant difference (P < 0.05) in mean relative wound area between the IFSG and SOC arms at weeks 6.The proportion of patients with complete epithelialization at 20 weeks was 2.11 times higher in the IFSG group than in the SOC group. For those patients that healed a median of 7 graft applications was required. Conclusions: In France, the addition of IFSG to the care plan of patients with deep diabetic foot wounds improved the closure rate by 41.6 % in IFSG group versus 22.2 % in SOC
Characteristics and outcomes of ICU patients with sepsis transmitted by cats and dogs: the PETSEPSIS multicentre retrospective observational cohort study
Juliette Quintin, Aurélie Le Thuaut, Fabienne Plouvier, Yoann Zerbib, Michel Sirodot, Nicholas Sedillot, Kahaia de Longeaux, Anthony Le Meur, Bertrand Souweine, Jean-Pierre Quenot, Jean-Claude Lacherade, Julie Noublanche, Mickael Landais, Didier Thevenin, Saad Nseir, Thomas Lafon, Thierry Vanderlinden, Roland Smonig, Laurent Argaud, Louis Chauvelot, Marlène Dubois, Romaric Larcher, Florian Berteau, Jean Dellamonica, Saber Davide Barbar, Mathieu Serie, Toufik Kamel, Frederic Jacobs, Nicolas de Prost, Jérôme Devaquet, Nicholas Heming, Marc Pineton de Chambrun, Philippe Michel, Michel Djibré, Alexis Ferre, Walter Picard, Kieran Pinceaux, Fabienne Tamion, Francois Legay, Maud Jonas, Anais Curtiaud, Stephan Ehrmann, Julien Huntzinger, Christophe Cracco, Frédérique Schortgen, Philippe Letocart, Jean Reignier
Critical Care, 2025, 29, pp.315. ⟨10.1186/s13054-025-05558-6⟩
Article dans une revueAbstractBackground Millions of households have cats or dogs as pets, and infections due to bites or scratches are increasing, with the most common pathogens being Pasteurella spp., Bartonella spp., Capnocytophaga spp, and Francisella tularensis. The objective of this study was to describe patients admitted to the intensive care unit (ICU) for infection transmitted by cats or dogs, as well as their outcomes. Methods The retrospective multicentre observational cohort study PETSEPSIS included consecutive adults admitted to 46 ICUs in France between 2009 and 2019 for sepsis due to cat or dog bites and/or caused by any of the four above-listed bacteria. We described their features and outcomes and performed univariate and multivariate analyses to identify factors associated with death. Results We included 174 patients with a median age of 64 [50–74] years; 58.1% were male. The median SAPS II score was 42 [28–58]. Mechanical ventilation was required in 51.2% of patients, for a median duration of 7 [4–13] days. Vasopressor support was used in 53.5%, renal replacement therapy in 19%, and limb amputation in 3.6% of the patients. The median ICU length of stay was 7 [4–16] days. Hospital mortality was 24.1%. The clinical presentation and severity of sepsis were similar across bacteria, although patients with Pasteurella spp. were older and had more comorbidities. Contact with cats were more often reported for Pasteurella spp. and Bartonella spp. infections and contact with dogs for Capnocytophaga spp. infections. Risk factors for hospital mortality present on ICU admission were older age, smoking, preexisting liver disease, high serum creatinine, and anaemia. Neither the type of micro-organism nor the initial antimicrobial treatment was associated with mortality. Conclusions This large multicentre study shows that infections transmitted by cats and dogs are infrequent reasons for ICU admission but are associated with substantial morbidity and mortality. Mortality was associated with older age and comorbidities but not with the type of microorganism or initial antibiotic treatment.
Eonisophil to Lymphocyte ratio and early variation as Predictors of Severity and in-hospital mortality in Patients Admitted to the Emergency Department for SARS-CoV-2 Infection
Pierre Godfrin, Pierrick Le Borgne, Jonathan Sabah, François Lefebvre, Gilles Kauffenstein, Cyrielle Brossard, Amandine Schnee, Pauline Trognon, Charles-Eric Lavoignet, Laure Abensur Vuillaume
Journal of Leukocyte Biology, 2025, 117 (9), pp.qiaf105. ⟨10.1093/jleuko/qiaf105⟩
Article dans une revueAbstractSince its emergence in 2019, the study of biomarkers in COVID-19 has focused on predicting the course of this potentially fatal disease. The eosinophil/lymphocyte ratio (ELR) appears to be a new indicator of systemic inflammation, morbidity, and mortality in inflammatory, allergic and cancer. The aim of our study was to determine the prognostic value of ELR and its early variation in predicting in-hospital mortality and severity in emergency department (ED) patients with SARS-CoV-2 Infection. Between March 1st and April 30th, 2020, we conducted a multicenter, retrospective study in six major hospitals in northeastern France. The cohort included patients with a confirmed diagnosis of SARS-CoV-2 infection (moderate to severe disease) hospitalized after admission to the ED. A total of 1035 patients were included in this study. ELR at H24 (OR: 0.0054, 95% CI: (0.0001-0.2523), p = 0.008) was associated with severity of infection. The only biochemical factor significantly associated with mortality was ΔELR at H24, i.e., the difference between ELR values at H24 and at admission (OR: 0.0305, 95% CI: (0.0026-0.3626), p = 0.006) in univariate analysis. The best ELR threshold for predicting severity of infection was found with the ELR at H24 with a result of 0.0007 (sensitivity 63.8%; specificity 61%), and for predicting mortality, ΔELR H24 found significant values with a threshold of -0.013 (sensitivity 77.4%; specificity 8.48%). In conclusion, ELR at H24 after ED admission may be a potentially useful biomarker for early prediction of severity of SARS-CoV-2 infection, but its isolated use remains limited for mortality prediction.
Effect of temporary suspension of chronic immunosuppressive drugs on day-90 mortality and ICU-acquired infections among critically Ill patients with solid organ transplant: a retrospective multicenter study
Julien Vaidie, Julien Demiselle, Anthony Gabriel, Antoine Guillon, Edwige Péju, Frédéric Pene, Piotr Szychowiak, Boris Delange, Pauline Guillot, Jean-Claude Lacherade, Pierre Asfar, Ann Zalucky, Philippe Vignon, Bruno Evrard, Bruno François
Intensive Care Medicine, 2025, 51 (8), pp.1442-1452. ⟨10.1007/s00134-025-08024-7⟩
Article dans une revueAbstractPurpose: Decision-making for management of immunosuppressive drugs in solid organ transplant patients admitted to the ICU remains controversial. This study aimed to evaluate the impact of a temporary suspension strategy (interruption of immunosuppressive drugs > 24h) on day-90 mortality and ICU-acquired infections. Methods: This multicenter observational retrospective study conducted in solid organ transplant patients admitted to nine ICUs used a Bayesian approach with priors based on a belief elicitation process conducted among a panel of experts. Results: Among 591 enrolled patients, suspension strategy was used in 34% of them, during a median period of 5 days [IQR: 3-10]. This approach was more common in patients admitted for sepsis (38%) or COVID-19 (49%) than for non-septic causes (24%) (p < 0.001). Overall, day-90 mortality reached 30%, and Bayesian analysis revealed substantial uncertainty with an OR at 1.13 (95% Credible Interval (CrI): 0.74-1.70), and a 15% probability of a beneficial effect. In the subgroup of patients with sepsis, OR was at 0.90 (95% CrI: 0.55-1.55), with a 50% probability of a beneficial effect. ICU-acquired infections occurred in 26% of patients. The suspension strategy indicated a potential benefit, both in the entire cohort, with a 73% probability of a beneficial effect [OR: 0.74 (95% CrI: 0.49-1.15)], and in the subgroup of sepsis patients with a 78% probability of beneficial effect [OR 0.70 (95% CrI, 0.42-1.16)]. Conclusion: Temporary suspension of immunosuppressive drugs may reduce the risk of ICU-acquired infections, with a true uncertainty on day-90 mortality. Prospective studies are warranted to confirm these results.
Porphyromonas gingivalis infection of oral keratinocytes drives the release of pro-inflammatory extracellular vesicles
Pierre-Yves Gegout, Benjamin Mary, Céline Stutz, Vincent Hyenne, Ofir Ginesin, Hadar Zigdon-Giladi, Olivier Huck
Scientific Reports, 2025, 15, ⟨10.1038/s41598-025-10078-y⟩
Article dans une revueAbstract<div>Periodontitis is an inflammatory disease caused<p>by bacterial infection. Recent studies have identified extracellular vesicles (EVs) as potential mediators of inflammation. This study aimed to evaluate the pro-inflammatory properties and miRNA content of EVs secreted in response to Porphyromonas gingivalis infection. Oral epithelial cells (ECs) were infected with P. gingivalis (MOI 100) for 24 h. EVs from infected (P.g.-ECs-EVs) and uninfected cells (ECs-EVs) were isolated, characterized, and tested on naive ECs. Cellular activity, inflammatory markers (TNF-α, IL-1β), and miRNA content of the secreted EVs were evaluated. Bioinformatic analysis was subsequently performed to identify potential targets of differentially expressed miRNAs. P. gingivalis infection increased EV production by 10 2 -fold. P.g.-ECs-EVs exhibited distinct properties compared to ECs-EVs, including higher metabolic activity and elevated TNF-α and IL-1β expression and secretion levels in exposed ECs. Several inflammation-related miRNAs were highly upregulated in P.g.-ECs-EVs (11-to 142-fold; p < 0.001). P. gingivalis promotes the secretion of pro-inflammatory EVs by ECs, suggesting their role as key mediators in P. gingivalisinduced inflammation and periodontal tissue destruction.</p></div>
Knee Osteoarthritis Diagnosis: Future and Perspectives
Henri Favreau, Kirsley Chennen, Sylvain Feruglio, Elise Perennes, Nicolas Anton, Thierry Vandamme, Nadia Jessel, Olivier Poch, Guillaume Conzatti
Biomedicines, 2025, 13 (7), pp.1644. ⟨10.3390/biomedicines13071644⟩
Article dans une revueAbstractThe risk of developing symptomatic knee osteoarthritis (KOA) during a lifetime, i.e., pain, aching, or stiffness in a joint associated with radiographic KOA, was estimated in 2008 to be around 40% in men and 47% in women. The clinical and scientific communities lack an efficient diagnostic method to effectively monitor, evaluate, and predict the evolution of KOA before and during the therapeutic protocol. In this review, we summarize the main methods that are used or seem promising for the diagnosis of osteoarthritis, with a specific focus on non- or low-invasive methods. As standard diagnostic tools, arthroscopy, magnetic resonance imaging (MRI), and X-ray radiography provide spatial and direct visualization of the joint. However, discrepancies between findings and patient feelings often occur, indicating a lack of correlation between current imaging methods and clinical symptoms. Alternative strategies are in development, including the analysis of biochemical markers or acoustic emission recordings. These methods have undergone deep development and propose, with non- or minimally invasive procedures, to obtain data on tissue condition. However, they present some drawbacks, such as possible interference or the lack of direct visualization of the tissue. Other original methods show strong potential in the field of KOA monitoring, such as electrical bioimpedance or near-infrared spectrometry. These methods could permit us to obtain cheap, portable, and non-invasive data on joint tissue health, while they still need strong implementation to be validated. Also, the use of Artificial Intelligence (AI) in the diagnosis seems essential to effectively develop and validate predictive models for KOA evolution, provided that a large and robust database is available. This would offer a powerful tool for researchers and clinicians to improve therapeutic strategies while permitting an anticipated adaptation of the clinical protocols, moving toward reliable and personalized medicine.
Syndromic gingival fibromatosis associated with pathogenic variation in the voltage-gated potassium channel gene KCNH1: a case report and proposed treatment protocol
Nhat Minh Do, Pierre Klienkoff, Anne de Saint Martin, Alexandra Jimenez-Armijo, Elise Schaefer, Gaétan Caravello, Lucas Geyer, Sarah Baer, Laurent Marcoux, François Clauss, Agnès Bloch-Zupan
BMC Oral Health, 2025, 25, pp.997. ⟨10.1186/s12903-025-06197-7⟩
Article dans une revueAbstractBackground: The KCNH1 gene (OMIM #603,305) encodes a voltage-gated potassium channel primarily found in the central nervous system. Recent discoveries have linked pathogenic variations in this gene to Temple-Baraitser syndrome (TMBTS, OMIM #611,816) and Zimmermann-Laband syndrome (ZLS, OMIM #135,500). A common manifestation of these syndromes is gingival fibromatosis, which may partially or completely cover tooth crowns, leading in some cases to functional and aesthetic problems, as well as delayed tooth eruption. Case presentation: A four-year-old boy and his parents first consulted for delayed primary molars eruption. Shortly after birth, he was diagnosed with a developmental encephalopathy caused by a de novo pathogenic variant in KCNH1. Treatment: The first step of oral treatment consisted of myofunctional and speech/language therapy to stimulate biting and chewing. It also helped with the rehabilitation of proper tongue function. This was followed by a gingivoplasty to expose the submerged teeth. We propose a clinical approach to optimize disease management. This aims to minimize complications associated with this rare disorder. Conclusion: This case illustrates the need for appropriate and early gingivoplasty to prevent teeth impaction and restore dental function. Additionally, it explores potential complications and provides grounds for a comprehensive protocol for managing gingival fibromatosis for patients with KCNH1 variant.
Uncovering the role of prokineticin pathway on Epicardial Adipose Tissue (EAT) development and EAT-associated cardiomyopathy
Martina Vincenzi, Canan Nebigil
Trends in Cardiovascular Medicine, 2025, 35 (5), pp.328-338. ⟨10.1016/j.tcm.2025.02.006⟩
Article dans une revueAbstractEpicardial adipose tissue (EAT), a unique fat depot surrounding the heart, plays a multifaceted role in glucose and lipid metabolism, thermogenesis, and the secretion of bioactive molecules that influence cardiac structure and function. Its proximity to the myocardium allows it to contribute directly to CVDs, including coronary artery disease, arrhythmias, and heart failure. In particular, excessive EAT has emerged as a significant factor in heart failure with preserved ejection fraction (HFpEF), the most common form of heart failure, especially in individuals with obesity and diabetes. Traditional metrics like body mass index (BMI) fail to capture the complexities of visceral fat, as patients with similar BMIs can exhibit varying CVD risks. EAT accumulation induces mechanical stress and fosters a pro-inflammatory and fibrotic environment, driving cardiac remodeling and dysfunction. Pharmacological modulation of EAT has shown promise in delivering cardiometabolic benefits. Recent advancements in diabetes therapies, such as SGLT2 inhibitors and GLP-1 receptor agonists, and antilipidemic drugs have demonstrated their potential in reducing pro-inflammatory cytokine production and improving glucose regulation, which directly influences EAT. These discoveries suggest that EAT could be a significant therapeutic target, though further investigation is necessary to elucidate its role in HFpEF and other CVDs. Recent advances have identified the prokineticin/PKR1 signaling pathway as pivotal in EAT development and remodeling. This pathway regulates epicardial progenitor cells (EPDCs), promoting angiogenesis while reducing EAT accumulation and metabolic stress on the heart, particularly under high-calorie conditions. Prokineticin, acting through its receptor PKR1, limits visceral adipose tissue growth, enhances insulin sensitivity, and offers cardioprotection by reducing oxidative stress and activating cellular survival pathways. In this review, we provide a comprehensive analysis of EAT's role in CVDs, explore novel therapeutic strategies targeting EAT, and highlight the potential of prokineticin signaling as a promising treatment for HFpEF, obesity, and diabetes.
Enseigner et évaluer l’empathie dans les études de santé : la piste des compétences psychosociales
Jean-Noël Vergnes, Nicolas Dritsch, Olivier Hamel, Alessandra Blaizot, Damien Offner, Bruno Ventelou, Éric Maeker, Laurence Lupi, Béatrice Lamboy
Soins Gérontologie, 2025, 30 (174), pp.37-42. ⟨10.1016/j.sger.2025.05.008⟩
Article dans une revueAbstractComment les compétences psychosociales (CSP) peuvent-elles offrir un cadre pertinent pour intégrer l’empathie dans les processus pédagogiques et évaluatifs des études de santé ? Les CSP sont définies par l’Organisation mondiale de la santé et Santé publique France comme un ensemble cohérent et interrelié de capacités psychologiques. Elles permettent à une personne de maintenir un état de bien-être psychique et d’adopter des comportements adaptés et positifs. En nous appuyant sur les dispositifs évaluatifs déjà en place dans les études de santé, nous proposons des pistes pour inscrire durablement l’empathie, à la fois dans les référentiels de compétences et dans les modalités d’évaluation tout au long des cursus en santé.
Automated insulin delivery after beta-cell replacement failure in people living with type 1 diabetes
Quentin Perrier, Sandrine Lablanche, Luc Rakotoarisoa, Orianne Villard, Jean-Pierre Riveline, Jean-Baptiste Julla, Fanny Buron, Sophie Reffet, Eric Renard, Laurence Kessler, Pierre-Yves Benhamou, Mathieu Armanet, Lionel Badet, Thierry Berney, Ekaterine Berishvili, Camille Besch, Domenico Bosco, Christophe Broca, Pierre Cattan, Antoin Durrbach, Laure Esposito, François Faitot, Luc Frimat, Sabrina Granziera, Michel Greget, Bruno Guerci, Matthieu Heim, Bénédicte Janbon, Thomas Jouve, Fanny Lebreton, Paolo Malvezzi, Vincent Melki, Ammanuel Morelon, Johan Noble, Géraldine Parnaud, Andrea Peloso, Marie Noelle Peraldi, Nadine Pernin, Julia Sabatier, Igor Tauveron, Charles Thivolet, Olivier Thaunat, Charles-Henri Wassmer, Cristine Widmer
Diabetes & Metabolism, 2025, 51 (4), pp.101654. ⟨10.1016/j.diabet.2025.101654⟩
Article dans une revueAbstractAims Patients living with highly unstable type 1 diabetes (T1D) are eligible for beta-cell replacement (βCR) therapy (islet or pancreas transplantation). This study aimed to evaluate glycemic control in patients treated with automated insulin delivery (AID) following failed βCR therapy, defined as secondary graft failure or marginal function. Material and Methods A national, multicenter, retrospective study was conducted with 23 patients who had βCR failure treated with AID for at least three months. The primary outcome was the proportion of patients achieving recommended glucose targets (time in 70–180mg/dl range [TIR] > 70 %, time below range [TBR] < 4 % and HbA1c < 7 %). Secondary outcomes included TIR, glycemia risk index (GRI), HbA1c, coefficient of variation (CV), body weight, insulin doses, severe hypoglycemia and AID discontinuation. Results The proportion of patients achieving recommended glucose targets under AID increased from 5.0 % to 57.1 % after 12 months. TIR increased from 54.2 ± 18.0 % to 75.5 ± 9.6 % after 12-month AID, while GRI decreased from 45.8 ± 22.2 % to 25.6 ± 10.3 %. HbA1c levels decreased from 7.5 ± 0.9 % to 7.0 ± 1.1 % after 12-month AID. CV, body weight and insulin doses did not change. All patients were free from severe hypoglycemia under AID, including those who had experienced severe hypoglycemia after βCR failure. No patient discontinued the AID. Conclusions This study highlights the effectiveness of AID in achieving glucose control targets and preventing severe hypoglycemia in patients with T1D following βCR failure. AID may serve as a valuable therapeutic option to improve glucose control when graft function declines.
Evaluation of Implant Survival in Xenograft-Grafted Sites
Lina Tahour, Kamer Kurumal, Catherine Petit, Pierre-Yves Gegout, Olivier Huck
SWISS DENTAL JOURNAL SSO – Science and Clinical Topics, 2025, 135 (02), pp.52 - 61. ⟨10.61872/sdj-2025-02-06⟩
Article dans une revueAbstractPatients with a history of periodontitis often require bone augmentation prior to implant placement; however, the mid-term outcomes of implants in augmented sites are not well documented. The aim of this retrospective study was to evaluate the mid-term survival and peri-implant health of implants placed in xenograft-augmented sites in patients with a history of periodontitis. Records of 34 patients (mean age: 65.3 ± 12 years; 64.7% Stage III, 29.4% Stage IV periodontitis) treated at the University of Strasbourg between 2015 and 2023 were analyzed, including 62 implants placed in xenograft-augmented sites. The mean follow-up was 5.74 ± 2.3 years. No implant failures occurred, yielding a 100% survival rate. The mean probing depth was 2.98 mm, and bleeding on probing averaged 25.5%. Marginal bone loss averaged 0.86 mm (distal) and 0.87 mm (mesial), corresponding to an annual bone loss of 0.18 mm; the most frequent bone loss pattern was vertical (71%). No peri-implantitis was observed; 54.8% of implants presented peri-implant mucositis, and 45.2% were classified as healthy. Within the limitations of this study, implants placed in xenograft-augmented sites in periodontally compromised patients demonstrated excellent mid-term survival and peri-implant tissue stability.
Advances in Lung Cancer Basic and Translational Research in 2025 – Overview and Perspectives Focusing on NSCLC
Celine Mascaux, Triparna Sen, Montse Sanchez-Cespedes, Sandra Ortiz-Cuaran, Yohan Bossé, Floris Dammeijer, Milena Cavic, Martin P Barr, Surein Arulananda, Ricardo Armisen, Alice H Berger, Fabrizio Bianchi, David P Carbone, Ferdinando Cerciello, William W Lockwood, Tetsuya Mitsudomi, Shuta Ohara, Katerina Politi, Sida Qin, Laila C Roisman, Robert Samstein, Ferdinandos Skoulidis, Aaron C Tan, Anish Thomas, Jianjun Zhang, Murry W Wynes, Thomas John, Ming Sound Tsao
Journal of Thoracic Oncology, 2025, 20 (10), pp.1369 - 1391. ⟨10.1016/j.jtho.2025.05.024⟩
Article dans une revueAbstractBasic and translational research in lung cancer is a rapidly evolving field with a transformational impact on early detection, diagnosis, therapeutic development, and personalization of care. Recent advances have greatly increased our understanding of the molecular genomics, proteomics, pathogenesis, and cellular biology of this deadly malignancy. The International Association for the Study of Lung Cancer (IASLC) recently formed a Basic and Translational Science (BaTS) Committee to further enhance the scientific leadership of IASLC in thoracic cancer research. This review by members of the committee highlights the breadth of current research in NSCLC, with a focus on molecular risk factors and processes in tumorigenesis, heterogeneity, phenotypic plasticity, metabolic reprogramming, immunobiology, the immune microenvironment, and microbiome. This review also identifies future research areas that may lead to further improvement in survival outcomes and curative therapies especially for patients with advanced NSCLC.
Effectiveness of Hyaluronic Acid Injection in the Reconstruction of Interdental Papilla: A Systematic Review
Alexia Larderet, Catherine Petit, Olivier Huck, Pierre-Yves Gegout
Oral Health and Preventive Dentistry, 2025, ⟨10.3290/j.ohpd.c_2057⟩
Article dans une revueAbstractPurpose: The loss of interdental papilla (IDP) is a significant esthetic concern often associated with black triangles (BT). BT are potential consequences of periodontitis, orthodontic treatment, and anatomical variations due to their influence on the critical distance from the contact point to the bone crest. Various treatment options, both invasive and non-invasive, have been proposed to address this issue. Recently, the injection of hyaluronic acid (HA) has emerged as a promising minimally invasive alternative. This systematic review aims to evaluate the effectiveness of HA injections for IDP reconstruction in esthetic zones in humans. Materials and methods: A comprehensive literature search was conducted using Cochrane library, PubMed/MEDLINE, and Embase databases with keywords like 'interdental papilla,' 'hyaluronic acid,' and 'human'. Change in BT mean height (mm) was considered as the primary outcome while percentage of change in BT area was considered as the secondary outcome. Results: 177 articles were screened, and 15 eligible studies were included, focusing on the therapeutic effects of HA injections on interdental papilla dimensions in humans. Clinical trials have demonstrated varying degrees of success and patient satisfaction with HA injections for IDP reconstruction over a period of 4 weeks to 25 months. Several studies showed significant improvements related to BT height and width, although complete papilla fill remains unpredictable. Higher success rates were observed in the maxilla compared to the mandible, and patients with thicker gingival phenotype showed better outcomes. The initial size of the defect, the number of HA applications and the analysis method significantly influenced the results. Conclusion: HA injections look promising for IDP reconstruction. However, the need for multiple injections and long-term efficacy remains to be fully understood. Further research is necessary to standardise treatment protocols and evaluate long-term outcomes and patient satisfaction comprehensively.
Corticosteroids in non-viral community-acquired pneumonia: edging closer to “yes”
Julie Helms, Ricard Ferrer, Antoni Torres
Intensive Care Medicine, 2025, 51 (6), pp.1139-1141. ⟨10.1007/s00134-025-07947-5⟩
Article dans une revueAbstractNo abstract available
Cardiogenic shock in patients with active onco-hematological malignancies: A multicenter retrospective study
Mickael Lescroart, Hélène Kemp, Olivier Imauven, Jean Herlé Raphalen, François Bagate, Julien Schmidt, Nahema Issa, Maxens Decavele, Anne-Sophie Moreau, Fabienne Tamion, Bruno Mourvillier, Laure Calvet, Emmanuel Canet, Christine Lebert, Stephanie Pons, Guillaume Lacave, Florent Wallet, Hadrien Winiszewski, Hamid Merdji, Marc Pineton de Chambrun, Laurent Argaud, Antoine Kimmoun, Guillaume Dumas, Lara Zafrani
Journal of Critical Care, 2025, 87, pp.155028. ⟨10.1016/j.jcrc.2025.155028⟩
Article dans une revueAbstractOnco-hematological (OH) patients face significant cardiovascular risks due to malignancy and drug toxicity. Data are limited on the characteristics and outcomes of OH patients with cardiogenic shock (CS) in intensive care units (ICUs).
Acute abdominal pain revealing ruptured ovarian endometrioma
V. Restouilh, P. Kauffmann, P. Le Borgne
Annales françaises de médecine d'urgence, 2025, 15 (3), pp.175-176. ⟨10.1684/afmu.2025.0635⟩
Article dans une revueTrajectories of FEV1 after lung transplantation and patient outcomes
Marc Raynaud, Natalia Belousova, Matthieu Glorion, Caroline Hillebrand, Clément Picard, Zehra Nizar Dhanani, Laurence Beaumont-Azuar, Sylvie Colin de Verdière, Édouard Sage, Jonathan Messika, Vincent Bunel, Adrien Tissot, Deborah Levine, Jérôme Le Pavec, Julie Macey, Benjamin Coiffard, Thomas Villeneuve, Benjamin Renaud-Picard, Loïc Falque, Nicolas Carlier, Claire Merveilleux, Fatima Anjum, Antoine Magnan, Alberto Benazzo, Alexandre Loupy, Antoine Roux
The Journal of Heart and Lung Transplantation, 2025, 44 (11), pp.1749-1762. ⟨10.1016/j.healun.2025.06.011⟩
Article dans une revueAbstractBackground: The forced expiratory volume in one second (FEV1) is the standard measure used to monitor the lung function after lung transplantation. However, little is known about the FEV1 trajectories post transplantation, and their associations with clinical outcomes. Methods: Adult patients who received a bilateral lung transplant between January 1, 2010 and January 1, 2021 were included from 15 centers in France, Belgium, Austria and the US. Three French centers formed the development cohort and the remaining centers formed the external validation cohorts. All centers performed routine spirometry measurements commencing shortly after lung transplantation and continuing at regular intervals of maximum three months afterwards. Recipient, donor and transplant characteristics were collected. Latent class mixed models were used to identify FEV1 trajectories. The number of FEV1 trajectories was defined according to the Akaike Information Criterion, Bayesian Information Criterion, the discrimination, the entropy and the interpretability of the model. Findings: A total of 2305 patients were included with 59 034 FEV1 measurements collected. The median follow-up post-transplantation was 4.3 years (IQR 2.3-6.2). In the development cohort (n=605), the best latent class mixed model identified seven clinically meaningful FEV1 trajectories. Trajectory #1 (25.6%) was characterized by patients with moderate and stable lung function (3-year patient survival = 79.9%); trajectory #2 (24.0%) and #3 (27.3%) were characterized by patients with moderate/high and stable lung function (3-year patient survival = 96.6% and 95.7% respectively); trajectory #4 (3.8%) was characterized by patients with increasing lung function (3-year patient survival = 69.6%); trajectory #5 (11.7%) was characterized by patients with a slow decline (3-year patient survival = 90.1%); and trajectory #6 (3.0%) and #7 (4.6%) were characterized by patients with accelerated decline (3-year patient survival = 33.3% and 59.5% respectively). Patients belonging to trajectories were associated with gender (p=0.020) and underlying disease (p=0.004). Similar FEV1 trajectories and patient outcomes were identified in the external validation cohorts on the basis of independent analyses. The trajectories were also confirmed in a series of subpopulations. Last, FEV1 value and slope at 1 year post transplant were strongly associated with FEV1 trajectories, in both the development cohort and the external validation cohorts. Interpretation: We identified and validated FEV1 trajectories that capture different clinical scenarios associated with post-transplant recipient outcomes. Our results may provide the basis for a trajectory-based risk assessment of lung transplant recipients. Funding: "Vaincre la mucoviscidose" grant, the association Grégory Lemarchal, ANR grant, PHRC grant, the FP7 collaborative project, IRSRPL grant, the Fondation du Souffle and PLUTO DITCAP grant from Vaincre la Mucoviscidose and Association Grégory Lemarchal.
Acute pain management in emergencies in 2024 : Formalized recommendations from experts of the French Society of Emergency Medicine
B. Villoing, M. Galinski, M.-A. Baron, M. Blancher, J.-B. Bouillon, V. Bounes, P. Catoire, A. Chauvin, A. Chevalier, R. Chocron, X. Combes, C. de Stefano, E. Delon, X. Dubucs, D. Douillet, Cédric Gil-Jardine, C. Gregoire, C. Hilaire, M. Jonchier, R. Kadji Kalabang, P. Le Borgne, P. Le Conte, F. Lemoel, T. Markarian, N. Peschanski, G. Rousseau, C. Rouxel, P.-C. Thiebaud, D. Viglino, M. Violeau, J. Guenezan, V.-E. Lvovschi
Annales françaises de médecine d'urgence, 2025, 15 (3), pp.177-203. ⟨10.1684/afmu.2025.0661⟩
Article dans une revueAbstractObjective To provide updated guidelines for the management of acute pain in adult patients in emergency settings. Design A consensus committee of 31 experts from the French Society for Emergency Medicine (Société française de médecine d’urgence, SFMU), including 10 pain specialists (with national/international publications), was convened. A formal conflict-of-interest (COI) policy was developed at the beginning of the process and enforced throughout. The entire guideline construction process was conducted independently of any industrial funding (i.e., pharmaceutical, medical devices). The authors were required to follow the rules of the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system to assess the quality of evidence. Methods The aim of this expert panel was to evaluate the medical treatment of acute pain in emergency care settings both inside and outside of hospitals. The experts explored questions within three domains: 1) indication for analgesic treatment following pain assessment and the organization of the health care teams; 2) pharmacological and non-pharmacological management; and 3) continuation of analgesic treatment following discharge from the emergency department or during hospital admission. Each question was formulated according to the PICO (Patients Intervention Comparison Outcome) model, and corresponding evidence profiles were produced. Based on these clinical questions, an extensive bibliographical search over the last 20 years was carried out using predefined keywords in accordance with PRISMA recommendations. Data quality was analyzed using the GRADE method. Recommendations were then formulated using the GRADE method and voted on by all the experts according to the GRADE Grid method. Results The experts’ synthesis work and the application of the GRADE® method resulted in 35 recommendations and 1 diagram. After 2 rounds of voting and several amendments, strong consensus was reached for all the recommendations. Among the formalized recommendations, 5 have high levels of evidence (GRADE 1) and 13 have low levels of evidence (GRADE 2). For 17 recommendations, the GRADE method could not be applied, resulting in expert opinions. For 4 questions, no recommendation could be made due to a lack of available data. Conclusions: There was strong expert consensus on 35 recommendations to improve the management of acute pain in adult patients in emergency settings.
The outcomes of salvage surgery for non-small cell lung cancer after immune checkpoint inhibitor or targeted therapy treatment. A multi-center international real-life study
Francesco Guerrera, Filippo Lococo, Ludovic Fournel, Domenico Viggiano, Giuseppe Mangiameli, Maria Giovanna Mastromarino, Gianluca Guggino, Joseph Seitlinger, Pietro Bertoglio, Luca Luzzi, Paolo Albino Ferrari, Claudia Filippini, Marco Alifano, Stefano Margaritora, Luca Voltolini, Emanuele Voulaz, Marco Lucchi, Francesco Jacopo Romano, Piergiorgio Solli, Sara Najmeh, Annamaria Carta, Enrico Ruffini
EJSO - European Journal of Surgical Oncology, 2025, 51 (6), pp.109592. ⟨10.1016/j.ejso.2025.109592⟩
Article dans une revueAbstractObjectives: In recent years, targeted therapy and immunotherapy have been demonstrated to improve survival in non-operable, non-small cell lung cancer (NSCLC) patients. The results of salvage lung resection in patients with initially unresectable advanced NSCLC after immune checkpoint inhibitor (ICI) or Target Therapy (TT) treatment remain unclear. This study aimed to define the outcomes of patients undergoing salvage surgery in a multi-center real-life setting. Methods: An international multicenter retrospective cohort study was conducted. Patients included in the study were judged inoperable, according to a multidisciplinary tumor board decision, before being submitted to ICI or TKI treatment. The rate of complications, the overall survival (OS), and progression-free survival (PFS) were compared. Crude and Multivariable-adjusted analysis were conducted. Results: Nighty-eight patients affected by NSCLC were included in the study. Most patients were female (N = 50-51 %), and the median age at surgery was 62 years. While ICI was performed in 29 patients (30 %), TT was done in 45 (46 %), and ICI plus chemotherapy in 24 (24 %). The inoperability was determined by metastatic disease in 43 cases (44 %), N2-N3 advanced disease in 18 (18 %), local invasiveness in 10 (10 %), a combination of local invasiveness and N-status in 26 (27 %), and other reasons in 1 case (1 %). Overall, the complication rate was 30 %, the mortality rate was 1 %, and the median LOS was 6 days. No residual lung disease (ypT0) was observed in 30 patients (31 %). The 5-year OS was 74 %, while the 5-year PFS was 44 %. Performing sublobar resections was an independent adverse prognostic factor in the multivariable analysis for survival (P < 0.01), while the pathological complete response (pCR) was an independent prognostic predictor of improved survival (P = 0.025). On multivariable analysis performing a sublobar resection (P < 0.01), an increasing ypT stage (P < 0.01), and postoperative therapy (P < 0.01) were independent prognostic predictors, correlating with impaired disease progression. Conclusions: Patients selected for Salvage Surgery after ICI or TT have reasonable post-operative and long-term outcomes. In this context, Salvage Surgery could be proposed in selected patients after a careful multidisciplinary evaluation.
What Do Patients Prefer in Periodontal and Implant Therapy? A Scoping Review
S. Gomulinski, V. Gandillot, F. Valet, Kevimy Agossa, O. Huck, S. Kerner, P. Bouchard, Maria-Clotilde Carra
Journal of Periodontal Research, 2025, J. Periodont. Res., -60 (10), pp.-949-962. ⟨10.1111/jre.13412⟩
Article dans une revueAbstractAims Understanding and integrating patients' preferences into clinical practice can enhance personalized care, improve patient's adherence to treatment, and lead to better therapeutic outcomes. The aim of this scoping review was to map the existing literature investigating patients' preferences in periodontal and implant therapy while identifying key areas for future research and development. Methods Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Scoping Reviews (PRISMA-ScR) guidelines, an electronic search was conducted in four databases (PubMed, Google Scholar, Cochrane Library, and ScienceDirect) in July 2024 to identify studies evaluating patients' preferences for periodontal and implant therapy. Results The literature search yielded 384 studies, of which eight articles met the inclusion criteria. These studies were conducted between 2003 and 2019 in Brazil, China, Austria, Italy, Germany, Canada, USA, Chile, France, Spain, and Portugal. A total of 1642 patients were included. Preferences were assessed using various quantitative and mixed methodologies. Results indicate a strong preference for treatments aimed at preserving teeth, favoring conservative approaches. When teeth cannot be restored, most patients prefer an implant-supported fixed partial denture to avoid damaging adjacent teeth with a conventional tooth-supported fixed partial denture. In this context, treatment predictability is ranked as the most important factor. While no sociodemographic factors appeared to be associated with preferences in periodontal treatments, several predictors were identified for dental implant therapy. Younger patients, women, individuals with higher education levels, and those with high perceived dental health showed a higher willingness to pay for dental implants. Conclusion The literature on patients' preferences in periodontal and implant therapies is scarce. Several trends are identified but further longitudinal studies are needed to explore patients' preferences over time and the role of sociodemographic and cultural segmentation criteria.
Impaired IgA Mucosal Immunity Following Lung Transplantation: A Potential Trigger for Bronchiolitis Obliterans Syndrome
François Carlier, Bruno Detry, Jérôme Ambroise, Nicolas Heddebaut, Thomas Planté-Bordeneuve, Aurélie Daumerie, Elisabeth Longchampt, Loïc Falque, Martine Reynaud-Gaubert, Sandrine Hirschi, Jean-François Mornex, Xavier Demant, Adrien Tissot, Jérôme Le Pavec, Vincent Bunel, David Lair, Marina Pretolani, Alexandre Vallée, Charles Pilette, Olivier Brugière
European Respiratory Journal, 2025, pp.2402212. ⟨10.1183/13993003.02212-2024⟩
Article dans une revueAbstractRationale : Bronchiolitis obliterans syndrome (BOS) limits long-term survival after lung transplantation (LuTx) and may be triggered by infections. As immunoglobulin (Ig)A is crucial to ensure adequate mucosal immunity, we explored whether IgA-related mucosal immunity is impaired in BOS. Methods : Sixty LuTx recipients from the COLT cohort were retrospectively included. All participants were in stable condition within the first year post-transplant. At 3.5 years post-LuTx, 30 remained stable and 30 had developed BOS. Bronchoalveolar lavage fluid (BALF) and sera collected pre-transplant and at 6 (M6) and 12 months (M12) post-transplant were assessed for monomeric IgA, secretory (S)-IgA, secretory component (SC) and cytokine profiling. Second, bronchiolar polymeric Ig receptor (pIgR) expression and subepithelial IgA-producing B-cell numbers were compared across graft tissue samples from 54 LuTx recipients classified as stable, pre-BOS, BOS or end-stage BOS. Results : S-IgA levels in BALF decreased between M6 and M12 (p=0.0001) and were reduced in BOS patients at M12 (p=0.0018). Patients with lower S-IgA levels had higher infection rates. BOS patients exhibited elevated SC levels in serum (p<0.01). Both reduced S-IgA in BALF and increased SC in serum were associated with higher risk of BOS. Lastly, a reduction in bronchiolar pIgR expression was observed in BOS patients (p=0.0001), that paralleled BOS severity. Conclusions : This study demonstrates an early impairment of mucosal IgA immunity in LuTx patients, which was linked to the later development of BOS, suggesting that IgA-related markers may serve as early predictors of BOS onset.
Influence of the antero-posterior position of a pin on the risk of a medial hinge fracture during a lateral opening wedge distal femoral varus osteotomy. A biomechanical study
Anthony Risser, Samuel Berthe, Mekki Tamir, Alexia Samier, Karl Boulos, François Bonnomet, Nadia Bahlouli, Henri Favreau, Matthieu Ehlinger
Orthopaedics & Traumatology: Surgery & Research, In press, pp.104300. ⟨10.1016/j.otsr.2025.104300⟩
Article dans une revueAbstractIntroductionLateral opening wedge distal femoral varus osteotomy (LOWDFO) is indicated for early isolated lateral compartment osteoarthritis in young patients with genu valgum due to an isolated distal femoral metaphyseal deformity. A medial hinge fracture is considered a poor prognostic factor for radio-clinical outcomes, hence its prevention is crucial. The protective role of a temporary pin has been demonstrated in the literature. The primary objective of this study was to evaluate the influence of the antero-posterior position of this pin on hinge protection.HypothesisThe main hypothesis was that a centrally positioned pin offers the best resistance to breakage compared to anterior and posterior positions.Materials and methodsThe experimental model was a 3D model of a distal femur, fabricated and printed from the pre-operative CT scan of a patient who underwent a LOWDFO. ABS polymer was chosen for printing these models due to its fracture characteristics similar to bone. Fifteen specimens were printed. Three different cutting guides were also printed, each corresponding to one of the three pin protection positions, the use of these cutting guides ensure the reproducibility of pin positioning. Three pin positions were defined: 25% anterior and 75% posterior junction (anterior group) on a horizontal plane of the distal femur, 50%-50% junction (central group), and 75% anterior and 25% posterior junction (posterior group). The tests were conducted on a single-column traction-compression machine 3345® (Instron™, Norwood, MA, USA). The protocol involved opening the osteotomy until breakage, defined by the appearance of the first fissure at the hinge. The primary outcome measure was the maximum force at breakage, and secondary outcomes were displacement before breakage and stiffness.ResultsThe "Central group" showed, in absolute terms (mean of 130.9 N), the greatest breaking force. This difference was statistically significant (SS) only compared to the "Anterior group" (mean of 85.09 N). The "Central group" also demonstrated the highest stiffness (mean of 15.70 N/mm) with a SS difference compared to the other two groups (9.06 N/mm for the anterior group and 11.98 N/mm for the posterior group).DiscussionThese results confirm the working hypothesis: a centrally positioned pin provides increased protection of the medial hinge during a LOWDFO. Although this in vitro study can only approximate actual in vivo conditions, it provides valuable insights into the optimal position of the pin for hinge protection. However clinical studies are needed.
Cost effectiveness of imaging strategies in the emergency department for the diagnostic workup of community-acquired pneumonia: a real-life retrospective study
Sabrina Kepka, Kevin Zarca, Mickaël Ohana, Louise Hoffbeck, Charlène Heimann, Pierrick Le Borgne, François Séverac, Joris Müller, Erik-André Sauleau, Pascal Bilbault, Isabelle Durand-Zaleski
Health Economics Review, 2025, 15 (1), pp.41. ⟨10.1186/s13561-025-00625-8⟩
Article dans une revueAbstractThe purpose of this study was to compare the length of stay (LOS) and costs of diagnostic workup by Ultra Low Dose (ULD) chest computed tomography and radiography for patients treated for a community-acquired pneumonia (CAP) in the emergency department (ED). Methods: We conducted a real-life retrospective study of patients treated for a CAP in two ED between March 1, 2019 and February 29, 2020. We estimated length of stay (LOS) as the difference between ED discharge and entry times, total hospital costs at 60 days including ED, initial admissions and readmissions. Patients with initial radiography were compared with patients with initial ULD CT using inverse probability weighing of the propensity score calculated from demographic variables, vital parameters and clinical presentation. We calculated the incremental cost effectiveness ratio as the difference between costs and the difference between LOS. Variability of the results was assessed using non-parametric bootstrapping. Results: We included 1609 consecutive patients, 1476 patients with radiography and 133 patients with ULD CT. The average costs were respectively €4317 [3483; 5067] and €4223 [4034; 4612] with 11.9 [10.1; 13.2] and 11.7 [11.5; 12.2] hours of LOS in the ED for chest radiography and ULD chest CT respectively, resulting in lower costs of € -94 [-870; 819] and a decreased LOS of 12 [-108; 76.9] minutes in favor of ULD chest CT. Conclusions: In this real-life study, the management of CAP in ED by ULD chest CT compared with chest radiography resulted in lower costs without increasing LOS.
Management of an infectious complication appearing in a transcanine implant: a case report
Maxime Delarue, Pierre Klienkoff, Mélanie Le Ven, Fabien Bornert
International Journal of Implant Dentistry, 2025, 11 (1), pp.37. ⟨10.1186/s40729-025-00626-6⟩
Article dans une revueAbstractBackground: Maxillary canine impaction is the second most common dental eruption anomaly, affecting approximately 0.2-3% of individuals, with a higher incidence in females. This condition often results in complications such as the misalignment of adjacent teeth, root resorption, and the development of cystic lesions. In some cases, abstention is recommended for impacted canine is kept with the lacteal tooth held on the dental arch. But in the longer term an implant therapy is nevertheless indicated. Case presentation: A 42-year-old man presented with persistent swelling and pain in the maxillary region associated with a transcanine implant placed one year ago by his dental practitioner. Imaging assessment showed the implant's apex inserted into the impacted canine which presented a crown and root resorption and was associated to a radiolucency around. In order to preserve implant and reduce morbidity related to a full extraction of the tooth, a coronectomy was performed allowing inflammatory surrounding tissues curettage. Discussion: This case shows an infectious complication of a transcanine implant and demonstrates an approach for managing these complications while preserving this implant. The coronectomy is a less invasive technique that reduces potential surgical complications and supports healing. A 2-year follow-up revealed complete bone reossification reinforcing the effectiveness of this method in similar clinical scenarios. Conclusion: This case suggests that coronectomy may be a viable option for managing impacted canines in proximity to implants when complete extraction poses a high risk of complications. However, given the limited number of reported cases and the absence of long-term data, this approach should be considered with caution. Further studies are necessary to better define the indications, long-term outcomes, and potential risks of this technique.
Clinical phenotyping of cardiogenic shock at a glance: A rapid, costless, streamlined approach
Miloud Cherbi, Hamid Merdji, Eric Bonnefoy, François Roubille, Clément Delmas
ESC Heart Failure, 2025, 12 (4), pp.3183-3186. ⟨10.1002/ehf2.15336⟩
Article dans une revueAbstractAims Cardiogenic shock (CS) is a heterogeneous syndrome in which recent guidelines have proposed clinical phenotyping based on the presence of hypoperfusion and/or congestion signs and symptoms. However, the impact of this clinical phenotype on outcomes remains poorly characterized. Methods and results FRENSHOCK is a prospective registry including 772 CS patients from 49 centres. Patients were categorized into multiple phenotypic groups based on three clinically assessed bedside criteria at admission: congestion, hypotension and skin mottling. The primary endpoint was 30‐day all‐cause mortality. Among 475 CS patients included, 69.7% were male, with a median age of 67.0 (59.0–78.0) years. Most patients presented with SCAI stage C (37.1%) or D (51.2%). At admission, 424 patients (89.3%) presented with congestion (50.7% on both sides, 39.2% left‐sided, 10.1% right‐sided), 343 (72.2%) with hypotension and 180 (37.9%) with mottling. At 30 days, 113 patients (23.8%) had died, spanning from 8.8% for patients with isolated hypotension (without congestion/mottling) to 26.5% for patients with hypotension and congestion, and 32.3% for patients with hypotension, congestion and mottling. The corresponding ORs for 30‐day all‐cause mortality remained significant even after adjustment for potential confounders, with 1.19 [(1.02–1.39), P = 0.03] for hypotension and congestion and 1.26 [(1.08–1.48), P < 0.01] for hypotension, congestion and mottling. Conclusions A simple clinical bedside evaluation of the CS phenotype based on hypotension, congestion and mottling allows for quick and costless stratification of 30‐day mortality risk and can be used to guide the level of monitoring intensity and/or patient management.
Chronic lung allograft dysfunction after lung transplantation: prevention, diagnosis and treatment in 44 European centres
Jens Gottlieb, Robin Vos, Peter Jaksch, Merel Hellemons, Are Martin Holm, Letizia Corinna Morlacchi, Jesper Magnusson, Rodrigo Alonso Moralejo, Víctor Mora-Cuesta, Vera Ennekes, Anna Reed, Claire Merveilleux Du Vignaux, Ina Hettich, David Bennett, Matthias Hecker, Alexandra Wald, Svitlana Guk, Andris Skride, Anna Nolde, Christiane Knoop, Federica Meloni, Jussi Tikkanen, Hillevi Larsson, Adrien Tissot, Peter Riddell, Jérôme Le Pavec, Michael Perch, Benjamin Renaud-Picard, François Carlier, Veronika Müller, Jasvir Parmar, Jan Havlin, Rosalía Laporta, Macé Matthew Schuurmans, Matevž Harlander, Slavomir Zenglen, Olivier Brugiere, Nikolaus Kneidinger, Andrew Fisher, Berta Saez-Gimenez
ERJ Open Research, 2025, 11 (3), pp.00675-2024. ⟨10.1183/23120541.00675-2024⟩
Article dans une revueAbstractBackground : There are limited data on optimal management of chronic lung allograft dysfunction (CLAD). We aimed to describe the variability of diagnostic and therapeutic practices in Europe. Methods : A structured questionnaire was sent to 71 centres in 24 countries. Questions were related to contemporary clinical practices for workup, monitoring and treatment of CLAD. The number of lung transplant procedures and patients in follow-up were collected. Results : 44 centres (62%) responded from 20 countries, representing 74% of European activity. The prevalence of CLAD was estimated at 9.1 cases per million population (25th and 75th percentiles of 4.4, 15.7). Preferred initial workup for probable CLAD consisted of chest computed tomography (CT) (inspiratory 91% and expiratory 74%), donor-specific antibody (DSA) measurement (86%), bronchoalveolar lavage (BAL) (85%) and transbronchial biopsy (81%). For monitoring of definite CLAD, inspiratory CT (67%), DSA (61%) and BAL (43%) were preferred. Body plethysmography was unavailable for 16% of cases. Prophylaxis was based on preventing infections (cytomegalovirus 99%, inhaled antibiotics 70% and antifungals 65%), tacrolimus-based immunosuppression (96%), azithromycin (72%) and universal proton pump inhibitor treatment (84%). First-line treatment of CLAD was based on azithromycin (82%) and steroid augmentation (74%). Photopheresis was used in 26% of cases. Conclusion : Current European practice CLAD detection is based on spirometry, inspiratory CT and DSA, with limited access to plethysmography and expiratory CT. Prophylactic treatment is based on azithromycin, tacrolimus-based immunosuppression and treatment of risk factors. No single treatment strategy is universally used, highlighting the need for an effective treatment of CLAD. The preferred first-line strategy is azithromycin and steroid augmentation.
Protoporphyrin IX-Derived Ruthenium(II) Complexes for Photodynamic Therapy in Gastric Cancer Cells
Andrés Restrepo-Acevedo, María Isabel Murillo, Christophe Orvain, Chloé Thibaudeau, Sevda Recberlik, Lucas Verget, Virginia Gómez Vidales, Christian Gaiddon, Georg Mellitzer, Ronan Le Lagadec
Inorganic Chemistry, 2025, 64 (19), pp.9684-9702. ⟨10.1021/acs.inorgchem.5c00896⟩
Article dans une revueAbstract<div><p>In recent years, photodynamic therapy (PDT) has emerged as a promising alternative to classical chemotherapy for treating cancer. PDT is based on a nontoxic prodrug called photosensitizer (PS) activated by light at the desired location. Upon irradiation, the PS reacts with the oxygen present in the tumor, producing cytotoxic reactive oxygen species (ROS). Compounds with highly conjugated π-bond systems, such as porphyrins and chlorins, have proven to be excellent light scavengers, and introducing a metal atom in their structure improved the generation of ROS. In this work, a series of tetrapyrrole-ruthenium(II) complexes derived from protoporphyrin IX and the commercial drug verteporfin were designed as photosensitizers for PDT. The complexes were almost nontoxic on human gastric cancer cells under dark conditions, revealing remarkable cytotoxicity upon irradiation with light. The ruthenium atom in the central cavity of the chlorin ligand allowed combined mechanisms in photodynamic therapy, as both singlet oxygen and superoxide radicals were detected. Additionally, one complex produced large amounts of singlet oxygen under hypoxic conditions. Biological assays demonstrated that the ruthenium derivatives caused cell death through a caspase 3 mediated apoptotic pathway and via CHOP, an endoplasmic reticulum stress-inducible transcription factor involved in apoptosis and growth arrest.</p></div>
Impact of Islet Transplantation on Diabetes Complications and Mortality in Patients Living With Type 1 Diabetes.
Quentin Perrier, C. Jambon-Barbara, L. Kessler, O. Villard, F. Buron, B. Guerci, S. Borot, M. Roustit, E. Berishvilli, L. Rakotoarisoa, Marie-Christine Vantyghem, E. Morelon, E. Renard, C. Besch, T. Berney, P. Y. Benhamou, S. Lablanche
Diabetes care, 2025, Diabetes care, 48 (6), pp.1007-1015. ⟨10.2337/dc25-0059⟩
Article dans une revueAbstractOBJECTIVE This study aimed to evaluate the impact of islet transplantation (IT) on diabetes complications, death, and cancer incidence. RESEARCH DESIGN AND METHODS This retrospective, multicenter, cohort study included patients from three IT clinical trials (intervention group) and from the French health insurance claims database Système National des Données de Santé (SNDS) (control group). Two cohorts of IT recipients were analyzed: IT recipients after kidney transplantation (IAK) and IT recipients alone (ITA). They were matched with patients living with type 1 diabetes (T1D) from the SNDS using a propensity score. The primary outcome was a composite criterion including death, dialysis, amputation, nonfatal stroke, nonfatal myocardial infarction, and transient ischemic attack. The secondary outcome was cancer. Hazard ratio (HRs) and P values were obtained using Cox proportional hazards analysis and log-rank test, respectively. RESULTS The study included 61 ITA recipients matched to 610 T1D control patients and 45 IAK recipients matched to 45 T1D control patients over a median follow-up period >10 years. Compared with T1D control patients, ITA and IAK recipients had a lower composite outcome risk (HR 0.39 [95% CI 0.21–0.71; P = 0.002] and 0.52 [0.30–0.88; P = 0.014], respectively) that seemed driven by reduced mortality (0.22 [0.09–0.54]; P < 0.001) for ITA and reduced dialysis (0.19 [0.07–0.50]; P < 0.001) for IAK. Both groups showed no significant changes in cancer risk. CONCLUSIONS This study suggests long-term benefits of IT on diabetes-related outcomes. Furthermore, despite the use of immunosuppressive drugs following IT, we observed no significant increase in the risk of cancer. Altogether, these findings highlight a favorable risk-benefit ratio of IT in treating patients with unstable T1D.
Assessment of the Prognostic and Predictive Values of the Deficient Mismatch Repair Phenotype in Patients Treated with Radical Nephroureterectomy for Upper Tract Urothelial Carcinoma
Pierre-Etienne Gabriel, Eva Compérat, Géraldine Cancel-Tassin, Justine Varinot, Mathieu Roumiguié, Pierre-Marie Patard, Gwendoline Daniel, Christian Pfister, Clara Delcourt, Françoise Gobet, Stéphane Larré, Priscilla Léon, Anne Durlach, Pierre Bigot, Julie Carrouget, Caroline Eymerit, Thomas Bessède, Cédric Lebacle, Sophie Ferlicot, Alain Ruffion, Emilien Seizilles de Mazancourt, Myriam Decaussin-Petrucci, Sébastien Crouzet, Xavier Matillon, Florence Mège-Lechevallier, Grégoire Robert, Nam-Son Vuong, Magali Philip, Hervé Lang, Pascal Mouracade, Véronique Lindner, Olivier Cussenot, Morgan Rouprêt, Thomas Seisen
European Urology Oncology, 2025, ⟨10.1016/j.euo.2025.03.014⟩
Article dans une revueAbstractBackground and objective Given the conflicting evidence currently available in the literature, our aim was to assess the prognostic and predictive values of the deficient mismatch repair (dMMR) phenotype in a large cohort of upper tract urothelial carcinoma (UTUC) patients. Methods Based on our national network, we performed a retrospective multicenter study including 281 UTUC patients treated with radical nephroureterectomy between 2000 and 2015 at ten French hospitals. The dMMR phenotype as well as PD-L1 and PD-1 expression were determined using immunohistochemistry analyses based on 2-mm-core tissue microarrays. Multivariable Cox regression models were fitted to assess the impact of the dMMR phenotype on recurrence-free (RFS), cancer-specific (CSS), and overall (OS) survival using interaction terms to test the heterogeneity of the treatment effect of adjuvant chemotherapy (AC). Multivariable logistic regression models were also fitted to assess the impact of the dMMR phenotype on PD-L1 and PD-1 expression. Key findings and limitations Overall, 76 (27.0%) patients had a dMMR phenotype, which was an independent predictor of prolonged RFS (hazard ratio [HR] = 0.41; 95% confidence interval [CI] = [0.21–0.83]; p = 0.01), CSS (HR = 0.38; 95% CI = [0.18–0.83]; p = 0.02), and OS (HR = 0.44; 95% CI = [0.22–0.89]; p = 0.02), with a significant interaction with the use of AC in multivariable Cox regression models (all pinteraction < 0.05). Subgroup analyses showed that the use of AC was significantly associated with prolonged RFS (HR = 0.14; 95% CI = [0.06–0.30]; p < 0.001), CSS (HR = 0.10; 95% CI = [0.03–0.29]; p < 0.001), and OS (HR = 0.23; 95% CI = [0.10–0.54]; p = 0.001) in non-dMMR patients only, without any significant benefit in dMMR patients (all p > 0.05). In multivariable logistic regression analyses, the dMMR phenotype was significantly associated with inverse PD-L1 (OR = 0.20; 95% CI = [0.10–0.80]; p = 0.001) and PD-1 (OR = 0.36; 95% CI = [0.16–0.79]; p = 0.01) expression. Conclusions and clinical implications We observed that the dMMR phenotype was associated with favorable pathological characteristics and prognosis in UTUC patients, despite conferring decreased sensitivity to AC and lower PD-L1 or PD-1 expression.
Association between mean hemodynamic variables during the first 24 h and outcomes in cardiogenic shock: identification of clinically relevant thresholds
Bruno Levy, Anais Curtiaud, Kévin Duarte, Clément Delmas, Julien Demiselle, Nicolas Girerd, Caroline Eva Gebhard, Julie Helms, Ferhat Meziani, Antoine Kimmoun, Hamid Merdji
Critical Care, 2025, 29 (1), pp.137. ⟨10.1186/s13054-025-05356-0⟩
Article dans une revueAbstract<div><p>Purpose Cardiogenic shock (CS) remains a critical condition with high mortality rates despite advances in treatment. This study aims to comprehensively evaluate both macrocirculatory and tissue perfusion variables over the initial 24 h post-admission to determine their impact on patient prognosis and identify potential hemodynamic thresholds for optimal outcomes. Secondary aims were to explore the correlation between macrocirculatory and tissue perfusion variables.</p><p>Design This is a post hoc analysis of data from two prospective studies, OptimaCC (NCT01367743) and MicroShock (NCT03436641), involving only patients with CS. Both studies applied regular assessment of hemodynamic variables at specific time points (admission, 6, 12, and 24 h) to ensure consistency in data collection, enrolling 118 patients between September 2011 and July 2021, with similar inclusion criteria and care processes.</p></div> <div>Results<p>The median age of the cohort was 69 years, 59% being male. The primary outcome, 30-day mortality, occurred in 37% of patients. Average macrocirculation variables over the first 24 h of CS such as mean arterial pressure (MAP), cardiac output (CO), cardiac index (CI), and cardiac power index (CPI) were significantly lower in patients meeting the primary outcome. Accordingly, average tissue perfusion variables (ΔPCO 2 and ΔPCO 2 /C(a-v)O 2 ) over the first 24 h of CS were also consistently impaired in patients meeting the primary outcome. The optimal clinically relevant thresholds of the first 24 h time course for poor outcomes, closely approximating the optimal values identified in the analysis, were: mean SAP < 95 mmHg, MAP < 70 mmHg, CO < 3.5 L/min, CI ≤ 1.8 L/min/m 2 , CPI < 0.27 W/m 2 , ScvO 2 < 70%, ΔPCO 2 ≥ 9 mmHg, and ΔPCO 2 /C(a-v)O 2 ≥ 1.5 mmHg/mL.</p></div> <div>Conclusions<p>This study is the first to identify critical hemodynamic thresholds, encompassing both macrocirculatory and tissue perfusion variables, within the initial 24 h of CS that are associated with adverse outcomes. The identified thresholds suggest specific hemodynamic targets that may guide resuscitation strategies.</p></div>
Temporal trends in population characteristics and type of device among primary prevention implantable cardioverter defibrillator recipients: The DAI-PP programme
Diana My Frodi, Serge Boveda, Victor Fournier, Fawzi Kerkouri, Frederic Anselme, Jean-Claude Deharo, Fabrice Extramiana, Laurent Fauchier, Estelle Gandjbakhch, Daniel Gras, Alexis Hermida, Laurence Jesel-Morel, Christophe Leclercq, Nicolas Lellouche, Aymeric Menet, Kumar Narayanan, Olivier Piot, Vincent Probst, Nicolas Sadoul, Jerome Taieb, Pascal Defaye, Eloi Marijon, Rodrigue Garcia
Archives of cardiovascular diseases, 2025, 118 (3), pp.178-184. ⟨10.1016/j.acvd.2024.10.335⟩
Article dans une revueAbstractBackground: Patient characteristics, technology and clinical practice surrounding primary prevention implantable cardioverter defibrillators have evolved continuously over time. Aim: To explore the temporal changes in patient characteristics, pharmacological therapy and device types among implantable cardioverter defibrillator recipients implanted for the primary prevention of sudden cardiac death over the last two decades in France. Methods: Characteristics of participants and type of device from the retrospective DAI-PP Pilot Study (2002-2012) were compared with those from the ongoing prospective DAI-PP Consortium (2018 onwards). Results: This study included 9588 participants overall (DAI-PP Pilot Study, n=5539; DAI-PP Consortium, n=4049). Compared with the DAI-PP Pilot Study, the DAI-PP Consortium subjects were older at implantation (62.5 vs 65.2 years; P=0.001) and had a higher proportion of women (15.1% vs 20.6%; P<0.001), a similar proportion of ischaemic heart disease (60.2% vs 60.2%; P=0.98), a higher left ventricular ejection fraction (27±7% vs 30±8%; P<0.001) and more patients with narrow QRS complexes (30.5% vs 46.0%; P<0.001). The proportion of patients treated with heart failure drugs increased significantly (70.1% vs 83.1%; P<0.001), whereas the use of amiodarone became much less frequent (22.7% vs 14.7%; P<0.001). Finally, the proportions of cardiac resynchronization therapy defibrillators (53.8% vs 46.4%; P<0.001) and dual-chamber defibrillators (23.3% vs 17.3%; P<0.001) decreased, whereas subcutaneous implantable cardioverter defibrillators now account for a sizeable proportion of implants (14.6%). Conclusions: Over a 20-year period, the primary prevention implantable cardioverter defibrillator population has evolved significantly, with an older age and a higher proportion of women. The type of device has changed, with fewer cardiac resynchronization therapy defibrillators and more subcutaneous implantable cardioverter defibrillators.
Features and outcomes of hypertrophic cardiomyopathy complicated by cardiogenic shock: an analysis of the FRENSHOCK multicenter prospective registry
Aurore Ughetto, Miloud Cherbi, Nicolas Lamblin, Laurent Bonello, Guillaume Leurent, Bruno Levy, Meyer Elbaz, Stéphane Manzo-Silberman, Pascal Lim, Francis Schneider, Alain Cariou, Hadi Khachab, Jeremy Bourenne, Marie-France Seronde, Brahim Harbaoui, Gerald Vanzetto, Charlotte Quentin, Hamid Merdji, Nicolas Combaret, Benjamin Marchandot, Benoit Lattuca, Patrick Henry, Edouard Gerbaud, Danka Tomasevic, Etienne Puymirat, François Roubille, Clément Delmas
The Hellenic Journal of Cardiology, 2025, ⟨10.1016/j.hjc.2025.03.005⟩
Article dans une revueAbstractBackground: Cardiogenic shock (CS) in patients with left ventricular hypertrophy (LVH) due to hypertrophic cardiomyopathy (HCM) or hypertensive heart disease, is underreported in the literature. This study aimed to delineate the characteristics, management strategies and outcomes of patients experiencing CS with preexisting LVH and HCM.Methods: FRENSHOCK is a prospective multicenter registry including 772 unselected CS patients from 49 centers. Baseline characteristics, management and 1-year outcomes were analyzed according to the occurrence on preexisting LVH.Results: Within 772 CS patients included, CS occur on a preexisting LVH in 34 patients (4.4%, 1.4% with HCM). Clinical characteristics, medical history, and usual medications, as well as hemodynamic parameters upon inclusion, did not differ between patients with or without LVH. The LVEF in CS patients with LVH was 27.3 ± 14.5% indicating a non-obstructive cause of CS. In-hospital management according to LVH and non-LVH groups indicated no differences between the groups. The 1-month and 1-year mortality did not differ between CS patients with and without LVH (respectively 26.5% vs 26%, (adjusted HR [95% CI]: 0.87 [0.44-1.72]) and 55.9% vs 44.7%, (adjusted HR [95% CI]:0.88 [0.54-1.42]). Subgroup analyses comparing HCM (n =11) and hypertensive LVH (n=23) revealed similar clinical characteristics, in-hospital management, and one-year rehospitalization rates for these patients.Conclusion: In a large and unselected CS population, the prevalence of LVH patients is low (4.4%) with less than half having HCM (1.4%). The presentation, management, and outcomes of CS are similar to the broader CS population in our series. However, HCM-CS represents a distinct clinical entity necessitating tailored management approaches.
SONOPS Multicentre Cross-Sectional Study
Mélanie Duval, Maud Rodney, Morgane Rousselet, Choosie Jaquin, Elsa Garot, Thomas Marquillier, Ariane Camoin, Marion Strub, Mathieu Marty, Edouard-Jules Laforgue, Caroline Victorri-Vigneau, Tony Prud'Homme
International Dental Journal, 2025, ⟨10.1016/j.identj.2025.02.007⟩
Article dans une revueAbstractIntroduction and aims: EMONO (equimolar oxygen-nitrous oxide mixture) is widely used in dentistry to achieve sedation for dental care. In addition, pure nonmedical nitrous oxide (N2O) has become a very popular psychoactive substance among health students. Thus, for dental students, the perception of a same substance, N2O, which can either be used as medicine in the form of EMONO in their daily practice, or consumed illegally for recreational purposes in the form of pure nonmedical N2O, is of concern. This study aims to estimate the prevalence of N2O (EMONO and pure nonmedical N2O) use among French dental students.<p>Methods: A cross-sectional multicentre study was carried out in six French dental schools. A self-administered questionnaire was offered to 2nd to 6th-year odontology students about their position with regard to N2O and its potential use.</p> <div>Results:<p>The prevalence of N2O use among the 1124 responding students was 50.4%, with heterogeneity according to dental school. 84% of the students who used N2O did so at least once for recreational purpose, while 16% used it only in the context of care and/or training.</p><p>Students with recreational N2O use were more likely to use other substances than students with care/training use. Nearly three-quarters of the students sought and experienced euphoria and laughter.</p></div> <div>Conclusion:<p>Nearly half the students in our study reported having used N2O recreationally, most of them regularly, a much higher prevalence than among nonhealthcare students.</p></div>
Long‐term bowel function following delayed coloanal anastomosis: Analysis of a multicentric cohort study (GRECCAR)
Maxime Collard, Jean‐jacques Tuech, Charles Sabbagh, Amine Souadka, Jérome Loriau, Eric Rullier, Frédéric Marchal, Adeline Germain, Stéphane Benoist, Jean‐luc Faucheron, Gilles Manceau, Anne Dubois, Anaïs Laforest, Isabelle Sourrouille, Aurore Protat, Diane Mège, Zaher Lakkis, Michel Prudhomme, Simon Derieux, Mehdi Ouaissi, Aurélien Venara, Cécile Brigand, Bernard Lelong, Karine Pautrat, Leon Maggiori, Gil Lebreton, Philippe Rouanet, Marc Pocard, Emilie Duchalais, Quentin Denost, Yann Parc, Jérémie Lefevre
Colorectal Disease, 2025, 27 (2), ⟨10.1111/codi.70013⟩
Article dans une revueAbstractAim Alteration of bowel function after delayed coloanal anastomosis (DCAA) might be a limitation to its utilization. Our aim was to assess the long‐term bowel function of DCAA in a large multicentric cohort. Method All patients who underwent DCAA interventions at 29 GRECCAR‐affiliated hospitals between 2010 and 2021 were retrospectively included. Low anterior resection syndrome (LARS) score or confection of a stoma due to poor bowel function was assessed in eligible patients. Good bowel function was defined by the preservation of bowel continuity with no LARS or a minor LARS. Results Among the 385 eligible patients to assess long‐term bowel continuity, 63% ( n = 243) responded to the questionnaire or had a definitive stoma because of poor bowel function. After a median follow‐up of 32 months, good bowel function was reported by 60% ( n = 146) of patients (with no LARS 36% and minor LARS 24%), whereas 40% of patients ( n = 146) had a poor bowel function including major LARS (36%) and definitive stoma due to poor bowel function (4%). No variables tested were predictive of a poor bowel function after DCAA, including a history of pelvic radiotherapy ( P = 0.722), salvage DCAA after failure of a previous anastomosis ( P = 0.755), presence of a diverting stoma ( P = 0.556), occurrence of an anastomotic leakage ( P = 0.416) and time interval from the DCAA to the bowel function assessment ( P = 0.350). Conclusions No LARS or minor LARS was reached for 60% of patients after DCAA. Less than 5% of patients received a definitive stoma due to a poor bowel function.
Formation à la chirurgie de la cataracte en France : analyse des résultats de l’enquête de l’European Board of Ophthalmology dans la cohorte française
Rémi Yaïci, M. Sanogo, F. Lefebvre, S. Ní Dhubhghaill, W. Aclimandos, R. Asoklis, H. Atilla, Catherine Creuzot-Garcher, D. Curtin, B. Cvenkel, L. Flanagan, T.T. Kivelä, A. Maino, R. Martínez-Costa, S. Priglinger, H. Prior Filipe, M. Stopa, B. Strong, J. Sturmer, M.-J. Tassignon, R. Ivekovic, J.-L. Bourges, A. Rousseau, M.-N. Delyfer, F. Mouriaux, T. Bourcier
Journal Français d'Ophtalmologie, 2025, 48 (2), pp.104383. ⟨10.1016/j.jfo.2024.104383⟩
Article dans une revueAbstractObjectif Cette étude vise à présenter et analyser les résultats de la cohorte française dans une enquête de l’European Board of Ophthalmology (EBO) sur la formation à la chirurgie de la cataracte en Europe, mettant en lumière les particularités de la formation française. Matériels et méthodes Un questionnaire électronique de 23 questions a été envoyé aux internes candidats à l’examen de l’EBO de 2018 à 2022. Les réponses des participants français ont été spécifiquement collectées et analysées. Résultats Sur 122 ophtalmologistes français répondants, l’âge moyen était de 31,0±2,8 ans avec une répartition égale entre hommes et femmes. Les séances de formation pré-patient les plus fréquentes étaient sur simulateurs de réalité virtuelle (8,6±8,2 séances). Les répondants français déclaraient un nombre moyen plus élevé de chirurgies partielles (124,1±94,8) et complètes (96,4±93,1), avec une confiance accrue (échelle de 0 à 10) dans l’exécution de chirurgies simples (7,3±2,4) et complexes (5,51±2,6), ainsi que dans la gestion de ruptures capsulaires postérieures (7,2±2,5) ou réalisation de sutures cornéennes (3,9±2,7) par rapport à la moyenne des participants européens. Discussion Dans le paysage européen, la formation française en chirurgie de la cataracte s’inscrit dans un modèle de « chirurgie pour tous », sans disparité de genre. Des variations régionales marquent cependant le paysage français, contrastant avec d’autres nations européennes comme l’Espagne ou l’Allemagne. Conclusion Pour une harmonisation des formations en chirurgie de la cataracte en Europe, il est conseillé d’établir des recommandations et stratégies éducatives, y compris la standardisation des formations pré-patients pour assurer la validation des compétences chirurgicales.
Sex disparities in ICU care and outcomes after cardiac arrest: a Swiss nationwide analysis
Simon A Amacher, Tobias Zimmermann, Pimrapat Gebert, Pascale Grzonka, Sebastian Berger, Martin Lohri, Valentina Tröster, Ketina Arslani, Hamid Merdji, Catherine Gebhard, Sabina Hunziker, Raoul Sutter, Martin Siegemund, Caroline E Gebhard
Critical Care, 2025, 29 (1), pp.42. ⟨10.1186/s13054-025-05262-5⟩
Article dans une revueAbstractBackground: Conflicting data exist regarding sex-specific outcomes after cardiac arrest. This study investigates sex disparities in the provision of critical care and outcomes of in-hospital (IHCA) and out-of-hospital cardiac arrest (OHCA) patients. Methods: Analysis of adult cardiac arrest patients admitted to certified Swiss intensive care units (ICUs) (01/200812/2022) using the nationwide prospective ICU registry. The primary outcome was ICU mortality, with secondary outcomes including ICU admission probability and advanced treatment provision. Results: Among 41,733 individuals (34.9% women), 21,692 patients (30.6% women) were admitted to ICUs (16,571 OHCA patients/5121 IHCA patients). Women were less likely to be admitted to the ICU than men (incidence rate ratio 0.82 [95% CI 0.80–0.85] and had a higher ICU mortality (41.8% vs 36.2%; p < 0.001). Mortality differences were more pronounced in OHCA patients (unadjusted HR: 1.35 [95% CI 1.28–1.43]; adjusted HR: 1.19 [95% CI 1.12–1.25]). In IHCA patients, mortality differences were less pronounced (unadjusted HR: 1.14 [95% CI 1.04–1.25]) and vanished after adjustment for confounders: adjusted HR: 1.03 [95% CI 0.94–1.13]). Women after cardiac arrest were older, more severely ill, and received fewer interventions before (44.7% vs 54.0%; p < 0.001) and during ICU stay. A subgroup analysis of 11,202 patients revealed that treatment limitations were more frequent in women (46.7% vs 38.7%; p < 0.001). However, these limitations were associated with an increased risk of death in both sexes. Conclusions: This study highlights sex disparities in short-term mortality and ICU resource allocation among cardiac arrest patients, with women potentially facing disadvantages, in particular after OHCA. The limitations of ICU registry data, particularly the lack of detailed cardiac arrest-specific and comorbidity information, restrict definitive conclusions. Future research should prioritize prospective studies with more granular data to better understand and address these disparities.
DECORIN, a triceps‐derived myokine, protects sorted β‐cells and human islets against chronic inflammation associated with type 2 diabetes
Allan Langlois, Julien Cherfan, Emmanuelle Meugnier, Ahmad Rida, Caroline Arous, Claude Peronet, Harzo Hamdard, Bader Zarrouki, Bernhard Wehrle-Haller, Michel Pinget, Siobhan M Craige, Karim Bouzakri
Acta Physiologica, 2025, 241 (2), ⟨10.1111/apha.14267⟩
Article dans une revueAbstractAim: Pancreatic βcells are susceptible to inflammation, leading to decreased insulin production/secretion and cell death. Previously, we have identified a novel triceps-derived myokine, DECORIN, which plays a pivotal role in skeletal muscleto-pancreas interorgan communication. However, whether DECORIN can directly impact βcell function and susceptibility to inflammation remains unexplored. <div>Methods:<p>The effect of DECORIN was assessed in sorted human and rat βcell and human islets from healthy and type 2 diabetes (T2D) donors. We assessed glucose-stimulated insulin secretion (GSIS) and cytokine-mediated cell death.</p><p>We then challenged sorted βcells and human islets with inflammatory cytokines commonly associated with diabetes, such as tumor necrosis factor-α (TNF-α) alone or in combination with interleukin1-β (IL1-β) and interferon-γ (cytomix).</p><p>Results: DECORIN enhanced cell spreading and the localization of phosphorylated FAK at adhesions, promoting GSIS under basal conditions. It also increased insulin granule docking adhesion length and countered the inhibitory effects of TNF-α on adhesion and actin remodeling at the βcell surface, resulting in preserved GSIS. DECORIN protected from cell death in sorted βcells and islets challenged with TNF-α alone or TNF-α + cytomix. Interestingly, DECORIN increased both insulin content and secretion in human islets from T2D individuals. Additionally, DECORIN treatment reversed the impaired gene expression caused by T2D and enhanced the expression of genes essential for islet function and metabolism.</p></div> <div>Conclusion:<p>Collectively, we have shown that DECORIN had a beneficial effect on human islets, protecting them from inflammation-induced cell death. In T2D islets, DECORIN restores islet function and reverses the expression of T2Dassociated genes. Based on our data, we propose that DECORIN is a promising therapeutic target for diabetes-associated inflammation and diabetes itself.</p></div>
Platinum(ii) and ruthenium(ii) coordination complexes equipped with an anchoring site for binding the protein kinase enzyme pockets: synthesis, molecular docking and biological assays
Matthieu Scarpi-Luttenauer, Katia Galentino, Christophe Orvain, Audrey Fluck, Marco Cecchini, Georg Mellitzer, Christian Gaiddon, Pierre Mobian
Dalton Transactions, 2025, 54 (20), pp.8270 - 8286. ⟨10.1039/d4dt02984d⟩
Article dans une revueAbstractTo mimic the structural aspects of staurosporine, a potent but unspecific kinase inhibitor, several coordination compounds based on two readily available diimine ligands containing hydrogen bonding donor/acceptor sites (NH-CO fragment) have been designed and synthesized. These complexes are constructed around Ru(II) and Pt(II) metal centers. A total of 9 compounds, named Ru(1)-(5) and Pt(1)-(4), were obtained through straightforward synthetic approaches. The cytotoxicity of the compounds was evaluated on AGS gastric cancer cells (GC) through standard MTT assays. All ruthenium and platinum complexes with low toxicity, i.e.Ru(3), Ru(5), Pt(3) and Pt(4), were docked in the ATP binding pocket of two protein kinases (S6K1 and MST2). The docking scores highlighted a preferred affinity of Ru(5) for the MST2 binding pocket, whereas the platinum compounds are predicted to bind stronger to the S6K1 binding site. Inhibitory activity of the metal complexes on the MST2 and S6K1 signaling pathways was evaluated by analyzing via western blot experiments the phosphorylation state of YAP, a downstream component of the Hippo pathway and the protein expression of S6 and its phosphorylated analogue p-S6. A clear difference of behavior between the Pt(II) and the Ru(II) complexes depending on the type of kinase was observed.
Mitochondrial dysfunction is a major cause of thromboinflammation and inflammatory cell death in critical illnesses
Toshiaki Iba, Julie Helms, Cheryl Maier, Ricard Ferrer, Jerrold Levy
Inflammation Research, 2025, 74 (1), pp.17. ⟨10.1007/s00011-025-01994-w⟩
Article dans une revueAbstractBackground: Mitochondria generate the adenosine triphosphate (ATP) necessary for eukaryotic cells, serving as their primary energy suppliers, and contribute to host defense by producing reactive oxygen species. In many critical illnesses, including sepsis, major trauma, and heatstroke, the vicious cycle between activated coagulation and inflammation results in tissue hypoxia-induced mitochondrial dysfunction, and impaired mitochondrial function contributes to thromboinflammation and cell death. Methods: A computer-based online search was performed using the PubMed and Web of Science databases for published articles concerning sepsis, trauma, critical illnesses, cell death, mitochondria, inflammation, coagulopathy, and organ dysfunction. Results: Mitochondrial outer membrane permeabilization triggers apoptosis by releasing cytochrome c and activating caspases. Apoptosis is a non-inflammatory programmed cell death but requires sufficient ATP supply. Therefore, conversion to inflammatory necrosis may occur due to a lack of ATP in critical illness. Severely damaged mitochondria release excess reactive oxygen species and injurious mitochondrial DNA, inducing cell death. Besides non-programmed necrosis, mitochondrial damage can trigger programmed inflammatory cell death, including necroptosis, pyroptosis, and ferroptosis. Additionally, a unique form of DNA-ejecting cell death, known as etosis, occurs in monocytes and granulocytes following external stimuli and mitochondrial damage. The type of cell death chosen remains uncertain but is known to depend on the cell type, the nature of the injury, and the degree of damage. Conclusions: Mitochondria damage is the major contributor to the cell death mechanism that leads to organ damage in critical illnesses. Regulating and restoring mitochondrial function holds promise for developing new therapeutic approaches for mitigating critical diseases.
Impact of hyper- and hypothermia on cellular and whole-body physiology
Toshiaki Iba, Yutaka Kondo, Cheryl L Maier, Julie Helms, Ricard Ferrer, Jerrold H Levy
Journal of Intensive Care, 2025, 13 (1), pp.4. ⟨10.1186/s40560-024-00774-8⟩
Article dans une revueAbstractThe incidence of heat-related illnesses and heatstroke continues to rise amidst global warming. Hyperthermia triggers inflammation, coagulation, and progressive multiorgan dysfunction, and, at levels above 40 °C, can even lead to cell death. Blood cells, particularly granulocytes and platelets, are highly sensitive to heat, which promotes proinflammatory and procoagulant changes. Key factors in heatstroke pathophysiology involve mitochondrial thermal damage and excessive oxidative stress, which drive apoptosis and necrosis. While the kinetics of cellular damage from heat have been extensively studied, the mechanisms driving heat-induced organ damage and death are not yet fully understood. Converse to hyperthermia, hypothermia is generally protective, as seen in therapeutic hypothermia. However, accidental hypothermia presents another environmental threat due to arrhythmias, cardiac arrest, and coagulopathy. From a cellular physiology perspective, hypothermia generally supports mitochondrial homeostasis and enhances cell preservation, aiding whole-body recovery following resuscitation. This review summarizes recent findings on temperature-related cellular damage and preservation and suggests future research directions for understanding the tempo-physiologic axis.
Prostate Cancer: A Journey Through Its History and Recent Developments
Hamza Mallah, Zania Diabasana, Sina Soultani, Ysia Idoux-Gillet, Thierry Massfelder
Cancers, 2025, 17 (2), pp.194. ⟨10.3390/cancers17020194⟩
Article dans une revueAbstractProstate cancer is one of the most common diseases among men worldwide and continues to pose a serious threat to health. This review shows the history and the new developments in the management of prostate cancer, with an emphasis on a range of therapeutic approaches, such as hormone therapy, radiation therapy, surgery, and innovative targeted therapeutics. The evolution of these treatments is examined in light of clinical outcomes, patient quality of life, and emerging resistance mechanisms, such as the recently shown vitamin D-based strategies. New developments that have the potential to increase survival rates and reduce side effects are also discussed, including PARP inhibitors (PARPis), immunotherapy, and tailored medication. Additionally, the use of biomarkers and sophisticated imaging methods in therapeutic decision-making is explored, with a focus on how these tools might improve patient care. The absolute necessity for a multidisciplinary approach for improving treatment strategies is becoming more and more apparent as our understanding of the biology of prostate cancer deepens. This approach ensures that patients receive customized medicines that fit their unique profiles. Future avenues of investigation will focus on resolving issues dealing with treatment efficacy and resistance to improve treatment results, ultimately leading to disease cure for prostate cancer patients.
An unusual case of dens invaginatus on a mandibular second molar: a case report
Davide Mancino, Dina Abdellatif, Alfredo Iandolo, Fabien Bornert, Youssef Haïkel
Restorative Dentistry & Endodontics, 2025, ⟨10.5395/rde.2025.50.e2⟩
Article dans une revueIncreased delay to lung transplantation for women candidates: gender-based disparity matters in the lung transplant trajectory
Adrien Tissot, Anne-Sophie Coatanea, Olivia Rousseau, Antoine Roux, Benjamin Coiffard, Xavier Demant, Benjamin Renaud-Picard, Jérôme Le Pavec, Antoine Magnan, Jean‐françois Mornex, Thomas Villeneuve, Loïc Falque, Mathilde Salpin, Véronique Boussaud, Christiane Knoop, Martine Reynaud-Gaubert, Romain Kessler, Gaëlle Dauriat, David Lair, Aurore Foureau, François-Xavier Blanc, Mathilde Karakachoff, Patricia Lemarchand
ERJ Open Research, 2025, pp.00623-2024. ⟨10.1183/23120541.00623-2024⟩
Article dans une revueAbstractBackground Lung transplantation (LT) is a highly dynamic segment of solid organ transplantation in which gender plays a central role . Our objective was to investigate the causes of outcome differences between women and men all along the LT pathway. Methods We used data from the COhort in Lung Transplantation (COLT) study (12 participating LT centers). Analyses were performed in three phases: baseline clinical characteristics, peri-transplantation period, and post-transplantation follow-up. Results Overall, 1710 participants (802 women and 908 men) were included in this study. Women were less likely than men to undergo transplantation (91.6% versus 95.6%, p=0.001) and waited longer before transplantation (115 versus 73 days, p<0.001). Female gender and pre-transplant class I anti-HLA antibodies were identified as independent factors associated with longer waiting time duration. Female LT recipients commonly received lungs from height- and sex-matched donors, despite higher female waiting-list mortality and a higher proportion of male donors. Importantly, women with oversized lung transplantation (defined by predicted TLC ratio and weight mismatch) did not have worse survival. The overall post-transplant survival of female recipients was significantly higher than that of male recipients (65.6% versus 57.3%, p<0.001), although the prevalence of specific major LT outcomes did not differ according to gender. Conclusion Women waited longer and were less likely to undergo transplant. Women transplanted with an oversized lung did not have worse survival after transplantation, suggesting that size matching criteria based on pTLC ratio and weight mismatch may be less stringent in this context.
Spontaneous pulmonary-twist secondary to Legionnaire’s disease
S. Cunat, C. Matau, A. Olland, J. Demiselle
Intensive Care Medicine, 2025, 51 (3), pp.610-611. ⟨10.1007/s00134-024-07768-y⟩
Article dans une revuePFMG2025–integrating genomic medicine into the national healthcare system in France
Caroline Abadie, Aldja Abderrahmane, Ouarda Abdous, Carine Abel, Oanez Ackermann, Cécile Acquaviva, Flavie Ader, Salma Adham, Dalila Adjaoud, Alexandra Afenjar, Nathalie Aladjidi, Anne-Sophie Alary, Frédérique Albarel, Sabrina Albert, Lise Allard, Ingrid Allix, Violaine Alunni, Inês F Amado, Cyril Amouroux, Nicolas André, Chloé Angelini, Mathieu Anheim, Ignacio Antolin Sanfelliz, Thomas Aparicio, Chloé Arfeuille, Jean-Benoît Arlet, Lionel Arnaud, Pauline Arnaud, Guilhem Arnold, Tania Attie-Bitach, Marion Aubert-Mucca, Isabelle Audo, Marie-Pierre Audrezet, Maxime Auroux, Céline Auzanneau, Xavier Ayrignac, Ibrahima Ba, Anne Bachelot, Delphine Bacq, Séverine Bacrot, Brigitte Bader-Meunier, Sarah Baer, Stéphanie Baert-Desurmont, Laurence Bal-Theoleyre, Ralyath Balogoun, Philippe Baltzinger, Guillaume Banneau, Claire Bar, Audrey Barbet, Giulia Barcia, Laure Barjhoux, Anne Barlier, Vincent Barlogis, Marc Barritault, Magalie Barth, Aurore Barthod-Malat, Peggy Baudouin-Cornu, Geneviève Baujat, Amandine Baurand, Jacques-Olivier Bay, Michèle Beau-Faller, Jean-Christophe Beaudoin, Rémi Bellance, Christine Bellanné-Chantelot, Carine Bellera, Alexandre Belot, Raihane Ben Abdeljelil, Rihab Ben Sghaier, Joy Benadiba, Stéphanie Benard, Claire Beneteau, Karelle Benistan, Fouzia Benkerdou, Mehdi Benkirane, Jean-François Benoist, Patrick R Benusiglio, Camille Bergès, Anne Bergougnoux, Maureen Bernadach, Emilien Bernard, Valérie Bernard, Virginie Bernard, Dounia Beroug, Aurélie Berrard, Jérôme Bertherat, Pascaline Berthet, Clotilde Berthier, Aurélia Bertholet-Thomas, Jean-Philippe Bertocchio, François Bertucci, Céline Besse, Elsa Besse-Pinot, Didier Bessis, Pauline Beuvain, Stéphane Bezieau, Marie Bidart, Ivan Bièche, Margaux Biehler, Thierry Bienvenu, Frédéric Bilan, Clarisse Billon, Christine Binquet, Elise Bismuth, Varoona Bizaoui, Pierre Blanc, Hélène Blanché, Jean-Yves Blay, Adrien Bloch, Gilles Bloch, Agnes Bloch-Zupan, Béatrice Bocquet, Morgane Boedec, Catherine Boileau, Maureen Boissinot, Anne Boland, Pierre-Adrien Bolze, Valérie Bonadona, Julia Bonastre, Nathalie Bonello-Palot, Adeline-Alice Bonnard, Raphaël Borie, Damien Botsen, Mohamed Bouattour, Marion Bouctot, Natacha Bouhours-Nouet, Jérôme Bouligand, Ahmed Bouras, Thomas Bourgeron, Jean-Louis Bourges, Emmanuelle Bourrat, Guilaine Boursier, Guilhem Bousquet, Philippe-Jean Bousquet, Simon Boussion, Lucile Boutaud, Julian Boutin, Patrice Bouvagnet, Claire Bouvattier, Sandrine Boyault, Aude Brac de la Perriere, Mehdi Brahmi, Valentine Brard, Mathilde Brasseur, Nadège Brazzalotto, Dominique Brémond-Gignac, Audrey Briand-Suleau, Claire Briet, Pierre-Paul Bringuier, Céline Bris, Elise Brischoux-Boucher, Karine Brochard, Martin Broly, Laura Brosseau, Ange-Line Bruel, Perrine Brunelle, Virginie Bubien, Bruno Buecher, Alexandre Buffet, Adrien Buisson, Lydie Burglen, Cyril Burin Des Roziers, Nelly Burnichon, Tiffany Busa, Mathilde Cabart, Sara Cabet, Charlotte Caille-Benigni, Claire Caillot, Christophe Calvin, Anne Cambon-Thomsen, Claude Cances, Alexandre Cantan, Liana Carausu, Aurélia Carbasse, Cédric Carbonneil, Bertrand Cariou, Olivier Caron, Sylvain Carras, Stéphanie Cartalat, Kévin Cassinari, Martin Castelle, Laurent Castéra, Frédéric Castinetti, Julie Catteau, Roseline Caumes, Aurélien Caux, Mathias Cavaillé, Hélène Cavé, Aurélie Caye-Eude, Cécile Cazeneuve, Tristan Celse, Noémie Celton, Camille Cenni, Jasmin Cévost, Rania Chaabna, Brigitte Chabrol, Ilyas Challet, Clélia Chalumeau, Pascal Chambon, Albain Chansavang, Jean-Baptiste Chanson, Sébastien Chapelant, Fabienne Charbit-Henrion, Perrine Charles, Sybil Charrière, Philippe Charron, Nicolas Chassaing, Nicolas Chatron, Boris Chaumette, Catherine Chaussain, Annabelle Chaussenot, David Cheillan, Olivier Chenavier, Bertrand Chesneau, Louise-Marie Chevalier, Christine Chomienne, Cécile Chougnet, Sophie Christin-Maitre, Marine Chuet, Emmanuelle Clappier, Johanna Clet, Mélanie Cloteau, Thomas Cluzeau, Guillaume Cogan, Benjamin Cogné, Alicia Cohen, Camille Cohen, Odile Cohen-Haguenauer, Martine Cohen-Solal, Chrystelle Colas, Estelle Colin, Corinne Collet, Delphine Collin-Chavagnac, Eloïse Colliou, Marie-Agnès Collonge-Rame, Maxime Colmard, Stéphanie Coopman, Lucie Coppin, Elodie Coquan, Valérie Cormier-Daire, Nadège Corradini, Carole Corsini, Mireille Cossée, Thibault Coste, Sophie Cotteret, Rachel Cottet, Christine Coubes, Florence Coulet, Nathalie Couque, Philippe Couratier, Marie Courbebaisse, Olivier Courbette, Cécile Courdier, Juliette Coursimault, Thomas Courtin, Lucien Courtois, Fabienne Coury, Laure Coutos-Thévenot, Charles Coutton, Isabelle Creveaux, Etienne Crickx, Louise Crivelli, Marc Cuggia, Laurence Cuisset, Hubert Curcio, Aurore Curie, Veronica Cusin, Noémie da Costa, Lionel da Cruz, Eric Dahlen, Antoine Dardenne, Benjamin Dauriat, Nell Dausse, Alix de Becdelièvre, Florence de Fraipont, Elisa de la Cruz, Thibault de la Motte Rouge, Sandrine de Montgolfier, Antoine de Pauw, Aurélien de Reyniès, Jean-Madeleine de Sainte Agathe, Marie de Tayrac, Anne-Sophie Defachelles, Michaël Degaud, Caroline Deiller, Eric Delabesse, Leslie Delachaux, Andrée Delahaye-Duriez, Jean-François Deleuze, Hélène Delhomelle, Christelle Delmas, Capucine Delnatte, Catherine Delorme, Richard Delorme, Bénédicte Demeer, Caroline Demilly, Philippe Denizeau, Isabelle Denjoy, Anne-Sophie Denommé-Pichon, Christel Depienne, Nicolas Derive, Flora Dervillé, Vincent Des Portes, Isabelle Desguerre, Béatrice Desnous, Camille Desseignes, Françoise Devillard, Manjula Deville, Nelly Dewulf-Pasz, Claire-Marie Dhaenens, Klaus Dietrich, Anne Dieux, Mody Diop, Emmanuel Disse, Samir Djaber, Christine Do Cao, Hélène Dollfus, Louis Domenach, Jean Donadieu, Bruno Donadille, Aurore Dougé, Hélène Dreyfus, Séverine Drunat, Danièle Dubois-Laforgue, Christele Dubourg, Charlotte Dubucs, Jean-Christophe Dubus, Matthieu Duchmann, François Ducray, Marion Ducrotverdun, Florence Duffaud, Yannis Duffourd, William Dufour, Gwénaelle Duhil de Bénazé, Yves Dulac, Olivier Dunand, Denis Dunoyer de Segonzac, Célia Dupain, Nicolas Duployez, Anaïs Dupré, Aurélien Dupré, Sophie Dupuis-Girod, Romain Duquet, Alice Durand, Benjamin Durand, Isabelle Durand-Zaleski, Xavier Durando, Alexandra Durr, Lauriane Eberst, Patrick Edery, Matthieu Egloff, Salima El Chehadeh, Laïla El Khattabi, Camille Engel, Mathilde Entresangle, Hélène Espérou, Florence Esselin, Pascaline Etancelin, Clémence Evrevin, Claire Ewenczyk, Alain Eychene, Thomas Eychenne, Andra Ezaru, Vincent Fabry, Laurence Faivre, Marie Faoucher, Clémentine Faure, Julien Fauré, Anne-Laure Fauret-Amsellem, Eva Feigerlova, François Feillet, Laurène Fenwarth, Claude Férec, Patricia Fergelot, Anthony Ferrari, Carole Ferraro-Peyret, Jean-Paul Feugeas, Claire Fieschi, Alice Fievet, Marc Fila, Rémi Fillatre, Mathilde Filser, Bertrand Fin, Mathieu Fiore, Nelly Firmin, Pascale Flandrin-Gresta, Aude Flechon, Benjamin Fournier, Cécile Fragny, Marie-Céline Francois-Heude, Bruno Francou, Thierry Frébourg, Véronique Fressart, Mathilde Frétigny, Benoit Funalot, Mathieu Fusaro, Pauline Gaignard, Estelle Gandjbakhch, Benjamin Ganne, Aurore Garde, Vincent Gatinois, Céline Gaucher, Léa Gaudillat, Philippe Gaulard, Lucas Gauthier, Mathilde Gay-Bellile, Damien Geneste, David Geneviève, Emmanuelle Genin, Sandrine Genoux, Birgit Geoerger, Véronique Geoffroy, Mathieu Georget, Bénédicte Gérard, Witold Gertych, Souad Gherbi Halem, Karima Ghorab, Romane Gille, Charlène Gillet, Marion Gillibert-Yvert, Olivier Gilly, Anne-Paule Gimenez-Roqueplo, Sophie Giraud, Barbara Girerd, François Girodon, Olga Glazunova, Delphine Gobert, Cyril Goizet, Zeynep Gokce-Samar, Lisa Golmard, Carlos Gomez-Roca, Emmanuel Gonzales, Magali Gorce, Marie-Clémence Gorenstein, Kévin Gorrichon, Frédéric Gottrand, Laetitia Gouas, Stéphanie Gourdon, Pierre Gourdy, Aurélie Gouronc, Claire Goursaud, Gaëlle Gousse, Evan Gouy, Odile Goze-Martineau, Diane Gozlan, David Grabli, Margaux Gras, Maude Grelet, Laetitia Gressin, Nathalie Grivel, Sarah Grotto, Virginie Grouthier, Solange Grunenwald, Olivier Grunewald, Paul Gueguen, Cécile Guérin, Anne-Marie Guerrot, Stéphanie Guey, Nathalie Guffon, Agnès Guichet, Romain Guièze, Marine Guillaud-Bataille, Francis Guillemin, Erell Guillerm, Yann Guillermin, Virginie Guillet-Pichon, Isabelle Guillou, Rosine Guimbaud, Anne Guimier, Claire Guissart, Eric Guittet, Nathalie Guy, Alice Hadchouel, Hamza Hadj Abdallah, Smail Hadj-Rabia, Samy Hadjadj, Mehdi Hage-Sleiman, Corinne Haioun, Sara Halawi, Abderaouf Hamza, Perrine Hanau, Nadine Hanna, Radu Harbuz, Gaëlle Hardy, Carine Hauspie, Sandrine Hayette, Jean-Michel Heard, Maël Heiblig, Solveig Heide, Laurence Heidet, Marcia Henry, Véronique Hentgen, Bénédicte Héron, Delphine Héron, Dominique Hervé, Anthony Herzig, Pierre Hirsch, Antoine Hommais, Jérôme Honnorat, Edgar Horta, Claude Houdayer, Pascal Houillier, Sarah Huet, Jean-Pierre Hugot, Yoann Huguenin, Marc Humbert, Marie-Laure Humbert-Asensio, Laure Huot, Norbert Ifrah, Frédéric Illouz, Apolline Imbard, Marion Imbert-Bouteille, Nicolas Isambert, Bertrand Isidor, Antoine Italiano, Raphaël Itzykson, Sylvie Jaillard, Yvan Jamilloux, Alexandre Janin, Louis Januel, Cécile Javelot-Jacquelin, Médéric Jeanne, Guillaume Jedraszak, Isabelle Jéru, Xavier Jeunemaitre, Eric Jeziorski, Florence Jobic, Philippe Joly, Laurence Jonard, Guillaume Jondeau, Natalie Jones, Jean-Marie Jouannic, Anne Jouinot, Pierre-Simon Jouk, Yohann Jourdy, Kévin Jousselin, Anne Jouvenceau, Charlotte Jubert, Sophie Julia, Anne-Laure Jurquet, Aurélien Juven, Maud Kamal, Pascal Kantapareddy, Elsa Kaphan, Lucie Karayan-Tapon, Edwige Kasper, Lara Kerbellec, Boris Keren, Emmanuel Khalifa, Philippe Khau van Kien, Sihem Kheddouci, Caroline Kientz, Rathana Kim, Antjie Knapke, Michel Koenig, Marina Konyukh, Raphaël Kormann, Manoelle Kossorotoff, Paul Kuentz, Florence Kyndt, Anaïs l'Haridon, Philippe Labrune, Marilyn Lackmy, Didier Lacombe, Ludovic Lacroix, Fanny Laffargue, Ghizlene Lahlou, Yec'Han Laizet, Laetitia Lambert, Jérôme Lamoril, Audrey Lamouroux, Emilie Landais, Samuel Landman, Elise Landry, Hélène Lapillonne, Anne-Sophie Lapointe, Lise Larcher, Pierre Lardeux, Laetitia Largeaud, Etienne Larger, Louis Larrouquere, Hélène Lasolle, Eulalie Lasseaux, Xenia Latypova, Tiphany Laurens, Camille Laurent, Pierre Laurent-Puig, Géraldine Lautrette, Thomas Lauvray, Benoît Lavallart, Cécile Lavenu-Bombled, Noémie Laverdure, Yannick Le Bris, Catherine Le Chalony, Nathalie Le Du, Gaëlle Le Folgoc, Gerald Le Gac, Jessica Le Gall, Edouard Le Guillou, Xavier Le Guillou, Gwenaël Le Guyader, Maryannick Le Ray, Olivia Le Saux, Christophe Le Tourneau, Benjamin Lebecque, Loïc Lebellec, Elise Lebigot, Pierre Leblond, Nicolas Leboulanger, Laure Lebras, Anne-Sophie Lebre, Louis Lebreton, François Lecoquierre, Mathilde Lefebvre, Marine Legendre, Camille Leglise, Clémentine Legrand, Daphné Lehalle, Catherine Lejeune, Christine Lemaitre, Raphaël Leman, Mathis Lepage, Alban Lermine, Karen Leroy, Gaëtan Lesca, Marion Lesieur-Sebellin, Mélanie Letexier, Franck Lethimonnier, Lucie Levaillant, Jonathan Levy, Yves Levy, Pascale Lévy, Ludovic Lhermitte, Agnès Linglart, Clément Lionnet, Doriane Livon, Laurence Lode, Magalie Lodin, Jonathan Lopez, Maureen Lopez, Alain Lortholary, Malek Louha, Camille Louvrier, Thomas E Ludwig, Auriane Luvet, Stanislas Lyonnet, Caroline Makowski, Valérie Malan, Martial Mallaret, Delphine Mallet, Stéphanie Mallet, Marion Malphettes, Nathalie Manaud, Pierre Mancini, Sylvain Manfredi, Sylvie Manouvrier, Luke Mansard, Sandrine Mansard, Lamisse Mansour-Hendili, Ludovic Mansuy, Julien Maquet, Ambroise Marçais, Alice Marceau-Renaut, Perrine Marec-Berard, Cécilia Marelli, Gaëlle Marenne, Isabelle Marey, Jennifer Margier, Henri Margot, Guillaume Marie, Victor Marin, Laetitia Marisa, Sandrine Marlin, Emeline Marquant, Valentine Marquet, Luisa Marsili, Amaury Martin, Laetitia Martinerie, Anna Maruani, Pauline Marzin, Christophe Massard, Emmanuelle Masson, Flavie Mathieu, Marion Mathieu, Simone Mathoulin-Pelissier, Flore Matthieu, Mathilde Mauras, Aurélien Maureille, Benoit Mazel, Mary Mazeres, Anne Mc Leer, Isabelle Melki, Rita Menassa, Aurélie Méneret, Julie Menjard, Anne Mercier, Elodie Merieau, Marie-Sophie Merlin, Jean-Philippe Merlio, Cécile Meslier, Laurent Mesnard, Sandrine Mestre-Godin, Corinne Metay, Sandrine Meunier, Pierre Meyer, Vincent Michaud, Laurence Michel-Calemard, Cyril Mignot, Marguerite Miguet, Gilles Millat, Tristan Mirault, Albane Miron de l'Espinay, Clémence Molac, Arnaud Molin, Julie Mondet, Faustine Monin, Pauline Monin, Audrey Monneur, Sophie Monnot, David Montani, Elodie Morel, Godelieve Morel, Valérie Morel, Jessica Moretta, Fanny Morice-Picard, Lucie Morillon, Carole Morin, Marie-Emmanuelle Morin-Meschin, Philippe Morlat, Despina Moshous, Emmanuelle Mouret-Fourme, Alice Moussy, Sébastien Moutton, Kévin Mouzat, Romane Muletier, Jean Muller, Marie Muller, Aleksandra Nadaj-Pakleza, Sophie Nambot, Nadia Nathan, Caroline Nava, Juliette Nectoux, Jeanne Netter, Florent Neumann, Julien Neveu, Zoé Nevière, Laetitia Nguyen, Tanguy Niclass, Gaël Nicolas, Laury Nicolas, Massih Ningarhari, Catherine Nogues, Cécile Novello, Frédérique Nowak, Sylvie Odent, Marie-Françoise Odou, Robert Olaso, Sarah Otmani, Caroline Ovaert, Laurence Pacot, Mélanie Pages, Catherine Paillard, Aurélien Palmyre, Eleni Panagiotakaki, Myriam Pannard, Anne Paoletti, Maria T Papadopoulou, Matthildi Papathanasiou, Véronique Paquis, Béatrice Parfait, Camille Paris, Clara Paris, Françoise Paris, Eric Pasmant, Marlène Pasquet, Marie Passet, Cédric Pastoret, Olivier Patat, Léa Patay, Antoine Paul, Céline Pebrel-Richard, Cristina Peduto, Regis Peffault de Latour, Antoine Pegat, Annick Pelletier, Valérie Pelletier, Fanny Pellisson, Perrine Pennamen, Victor Pereira, Julie Pernin-Grandjean, Julien Péron, Alexandre Perrier, Lionel Perrier, Laurence Perrin, Isabelle Perthus, Arnaud Petit, Audrey Petit, Florence Petit, François Petit, Yuliya Petrov, Hugo Peyre, Christophe Philippe, Juliette Piard, Elise Pierre-Noël, Gaëlle Pierron, Clément Pimouguet, Véronique Pingault, Stéphane Pinson, Emmanuelle Pion, Julie Plaisancié, Marc Planes, Pauline Planté-Bordeneuve, William Plas, Morgane Plutino, Ludivine Poignie, Vianney Poinsignon, Marilyne Poirée, Nicolas Pons, Bénédicte Pontier, Valérie Porquet-Bordes, Camille Porteret, Delphine Potier, Louis Potier, Damien Pouessel, Laura Poujade, Marie Preau, Claude Preudhomme, Fabienne Prieur, Vincent Probst, Vincent Procaccio, Caroline Prot-Bertoye, Delphine Prunier, Jacques Puechberty, Mathilde Pujalte, Leila Qebibo, Sylvia Quemener-Redon, Isabelle Quérée, Susana Quijano-Roy, Nicolas Quirin, Caroline Racine, Sandra Raimbault, Judith Raimbourg, Marine Rajaoba, Thomas Rambaud, Carole Ramirez, Francis Ramond, Kara Ranguin, Antonio Rausell, Jean-Marie Ravel, Claudia Ravelli, Gerald Raverot, Isabelle Ray-Coquard, Caroline Raynal, Patricia Réant, Vinciane Rebours, Richard Redon, Yves Réguerre, Philippe Reix, Cécile Renard, Mathilde Renaud, John Rendu, Céline Renoux, Romain Rey, Rachel Reynaud, Lucie Rhinan, Florence Riant, Florence Riccardi, Pascale Richard, Agathe Ricou, Vincent Rigalleau, Marlène Rio, Axelle Rivière, Patrick Robelin, Marion Robert, Thomas Robert, Barbara Rohmer, Pauline Romanet, Arnaud Romoli, Sophie Rondeau, Caroline Rooryck, Bertrand Roquelaure, Jérémie Rosain, Massimiliano Rossi, Sylvie Rossignol, Anya Rothenbuhler, Nadège Rouel, Marine Rouillon, Anne-Francoise Roux, Nathalie Roux-Buisson, Cécile Rouzier, Emmanuel Roze, Lyse Ruaud, Valentin Ruault, Claire Ruysschaert, Esma Saada, Samira Saadi - Ait El Mkadem, Thoueiba Saandi, Niki Sabour, Sabrina Sacconi, Raphaël Saffroy, Hana Safraou, Virginie Saillour, Aude Saint Pierre, Cécile Saint-Martin, Pierre Saintigny, Gaëlle Salaun, David Salgado, Laurence Salle, Didier Samuel, Damien Sanlaville, Laure Sapey-Triomphe, Sabine Sarnacki, Elisabeth Sarrazin, Catherine Sarret, Véronique Satre, Pascale Saugier-Veber, Paul Saultier, Laure Saumet, Elise Schaefer, Nicolas Scheyer, Isabelle Schiff, Gudrun Schleiermacher, Nicolas Schleinitz, Caroline Schluth-Bolard, Anouck Schneider, Bertrand Schwartz, Jean-Marc Sebaoun, Margaux Serey-Gaut, Hassan Serrier, Aude Servais, Marine Serveaux-Dancer, Nicolas Sevenet, Antoine Seyve, Alicia Sibony-Cohen, Flore Sicre de Fontbrune, Sabine Sigaudy, François Sigaux, Fatoumata Simaga, Victor Simmet, Pauline Simon, Sophie Simon, François Sirveaux, Thomas Smol, Guilhem Solé, Gwendoline Soler, Pauline Solignac, Marie-Hélène Soriani, Isabelle Soubeyran, Jean Soulier, Laurent Spelle, Brian Sperelakis-Beedham, Marco Spinazzi, Marta Spodenkiewicz, Anne Spraul, Barbara Squiban, Arunya Srikaran, Julie Steffann, Anamaria Stetco, Radka Stoeva, Tanya Stojkovic, Dominique Stoppa-Lyonnet, Felipe Suarez, Pierre Sujobert, Juliette Svahn, Minh-Chau Ta, Anne-Claude Tabet, Gaëlle Tachon, Matthias Tallegas, Anne Tallet, Pierre-Edmond Tambourin, Julie Tandonnet, Véronique Tardy, Emmanuelle Tavernier, Dimitri Tchernitchko, Marie-Hélène Teillon-Berranger, Julie Tenenbaum, Jordan Teoli, Marine Tessarech, Benoit Tessoulin, Mylène Tharreau, Christel Thauvin-Robinet, Nathalie Theou-Anton, Julien Thevenon, Anne Thomas, Laure Thomas, Quentin Thomas, Cécile Thomas-Teinturier, Nathalie Tieulie, Julie Tinat, Camille Tlemsani, Sylvie Tondeur, Lucie Tosca, Diego Tosi, David Tougeron, Phlippe Touraine, Elisabeth Tournier-Lasserve, Annick Toutain, Frédéric Tran Mau-Them, Christine Tranchant, Olivier Trédan, Aurélien Trimouille, Jean-Noël Trochu, Vincent Tronel, Cécile Trouba, Marie-Elise Truchetet, Nathalène Truffaux, Amel Tsalamlal, Edouard Turlotte, Violette Turon, Maud Tusseau, Nancy Uhrhammer, Christel Vaché, Stéphanie Valence, Thibaud Valentin, René Valero, Sophie Valleix, Marion Vallet, Hélène Vanacker, Pierre Vande-Perre, Yves Vandenbrouck, Clémence Vanlerberghe, Rosa Vargas-Poussou, Camille Vatier, Vincent Vauchel, Dominique Vaur, Lourdes Velo-Suarez, Laurence Venat, Gabriella Vera, Camille Verebi, Célia Verley, Loïc Verlingue, Christophe Verny, Lauren Veronese, Nelly Verotte, Benjamin Verret, Yoann Vial, Francois Vialard, Alain Viari, Marie Vidailhet, Dominique Vidaud, Michel Vidaud, Stéphane Vignes, Clothilde Vigouroux, Laurent Villard, Laurent Villeneuve, Patricia Villié, Marie-Charlotte Villy, Lara Vinauger, Armelle Vinceneux, Anne Vincenot, Christine Vinciguerra, Antonio Vitobello, Patrick Vourc'H, Aurore Vozy, Marie-Laure Vuillaume-Winter, Sandrine Vuillaumier-Barrot, Karim Wahbi, Cédrick Wallet, Thomas Walter, Ulrike Walther-Louvier, Sarah Watson, Anne-Christine Waymel, Sara Weinhard, Camille Wicker, Marjolaine Willems, Justine Wourms, Antoine Wyrebski, Kévin Yauy, Mohamad Zaidan, Ariane Zaloszyc, Hélène Zattara, Christophe Zawadzki, Alban Ziegler
The Lancet Regional Health - Europe, 2025, 50, pp.101183. ⟨10.1016/j.lanepe.2024.101183⟩
Article dans une revueAbstractIntegrating genomic medicine into healthcare systems is a health policy challenge that requires continuously transferring scientific advances into clinics and ensuring equal access for patients. France was one of the first countries to integrate genome sequencing into clinical practice at a nationwide level, with the ambition to provide more accurate diagnostics and personalized treatments. Since 2016, the French government has invested €239M in the 2025 French Genomic Medicine Initiative (PFMG2025) which has so far focused on patients with rare diseases (RD), cancer genetic predisposition (CGP) and cancers. PFMG2025 has addressed numerous challenges to set up an operational organizational framework. As of December the 31st 2023, 12,737 results were returned to prescribers for RD/CGP patients (median delivery time: 202 days, diagnostic yield: 30.6%) and 3109 for cancer patients (median delivery time: 45 days). PFMG2025's future priorities encompass ensuring economic sustainability, strengthening links with research, empowering patients and practitioners, and fostering collaborations with European partners.<p>Funding As of December the 31st 2023, €239M have been invested by the French government.</p>
The role of viscoelastic tests in the diagnosis of sepsis-induced coagulopathy (SIC)
Toshiaki Iba, Julie Helms, Jerrold H Levy
Annals of Intensive Care, 2025, 15 (1), pp.19. ⟨10.1186/s13613-025-01442-2⟩
Article dans une revueDescription and first insights on a large genomic biobank of lung transplantation
Simon Brocard, Martin Morin, Nayane dos Santos Brito Silva, Benjamin Renaud-Picard, Benjamin Coiffard, Xavier Demant, Loïc Falque, Jérome Le Pavec, Antoine Roux, Thomas Villeneuve, Christiane Knoop, Jean-François Mornex, Mathilde Salpin, Véronique Boussaud, Olivia Rousseau, Vincent Mauduit, Axelle Durand, Antoine Magnan, Pierre-Antoine Gourraud, Nicolas Vince, Mario Südholt, Adrien Tissot, Sophie Limou
European Journal of Human Genetics, 2025, 33 (3), pp.304-311. ⟨10.1038/s41431-024-01683-y⟩
Article dans une revueAbstractThe main limitation to long-term lung transplant (LT) survival is chronic lung allograft dysfunction (CLAD), which leads to irreversible lung damage and significant mortality. Individual factors can impact CLAD, but no large genetic investigation has been conducted to date. We established the multicentric Genetic COhort in Lung Transplantation (GenCOLT) biobank from a rich and homogeneous sub-part of COLT cohort. GenCOLT collected DNA, high-quality GWAS (genome-wide association study) genotyping and robust HLA data for donors and recipients to supplement COLT clinical data. GenCOLT closely mirrors the global COLT cohort without significant variations in variables like demographics, initial disease and survival rates ( P > 0.05). The GenCOLT donors were 45 years-old on average, 44% women, and primarily died of stroke (54%). The recipients were 48 years-old at transplantation on average, 45% women, and the main underlying disease was chronic obstructive pulmonary disease (45%). The mean follow-up time was 67 months and survival at 5 years was 57.3% for the CLAD subgroup and 97.4% for the non-CLAD subgroup. After stringent quality controls, GenCOLT gathered more than 7.3 million SNP and HLA genotypes for 387 LT pairs, including 91% pairs composed of donor and recipient of European ancestry. Overall, GenCOLT is an accurate snapshot of LT clinical practice in France and Belgium between 2009 and 2018. It currently represents one of the largest genetic biobanks dedicated to LT with data available simultaneously for donors and recipients. This unique cohort will empower to run comprehensive GWAS investigations of CLAD and other LT outcomes.
Amikacin use in critically ill patients requiring renal replacement therapy: the AMIDIAL-ICU study
V. Dupont, B. Mourvillier, C. Barbe, V. Legros, M. Jozwiak, H. Merdji, C. Dupuis, H. Winiszewski, A. Marchalot, G. Lacave, M. Neuville, A. Sagnier, F. Barbier, C. Thivilier, S. Ruiz, R. Smonig, J. Rosman, L. Argaud, S. Grangé, B. Sarton, P. Chillet, G. Voiriot, L. Kanagaratnam, Z. Djerada
Annals of Intensive Care, 2025, 15 (1), pp.42. ⟨10.1186/s13613-025-01461-z⟩
Article dans une revueAbstractBACKGROUND: Acute kidney injury (AKI) requiring renal replacement therapy (RRT) is common in intensive care units (ICUs), yet optimal amikacin dosing in this context remains poorly understood. METHODS: We conducted a prospective observational study across 18 French hospitals from April 2020 to January 2022. Adult ICU patients (aged \textgreater 18 years) receiving their first amikacin dose while on RRT were included. Data on demographics, RRT modalities, amikacin dosing, and therapeutic drug monitoring were collected. Using a pharmacokinetic modeling approach, we evaluated various amikacin regimens and simulated target attainment probabilities across different minimum inhibitory concentrations (MICs). RESULTS: A total of 111 patients were included, with approximately two-thirds receiving continuous RRT. The median amikacin dose was 27 (25-30) mg/kg. Amikacin peak (Cmax) and trough concentrations were monitored in 53 (47.8%) and 76 (68.5%) patients, respectively. Continuous RRT and a history of chronic kidney disease reduced dialytic clearance. For a MIC ≤ 4 mg/L, a 15 mg/kg amikacin dose achieved Cmax/MIC and AUC/MIC targets in ≥ 90% of patients on intermittent dialysis, while 20 mg/kg was required for those on continuous dialysis. For a MIC = 8 mg/L, a 30 mg/kg dose was necessary to achieve Cmax/MIC ≥ 8. CONCLUSIONS: Our findings highlight suboptimal adherence to amikacin monitoring guidelines in ICU patients on RRT. Using pharmacokinetic modeling, we identified amikacin dosing recommendations ranging from 15 to 35 mg/kg to optimize efficacy and minimize risks, depending on MIC and dialysis modality.
Real-world effectiveness and tolerability of sotorasib in patients with KRAS G12C-mutated metastatic non-small cell lung cancer: the IFCT-2102 Lung KG12Ci study
M Wislez, C Mascaux, J Cadranel, Q D Thomas, C Ricordel, A. Swalduz, E Pichon, R Veillon, V Gounant, G Rousseau-Bussac, A. Madroszyk, C Daniel, M Ravoire, A.-C. Metivier, P Fournel, P Missy, F Morin, F Guisier, V Westeel
European Journal of Cancer, 2025, 219, pp.115301-115301. ⟨10.1016/j.ejca.2025.115301⟩
Article dans une revueAbstractIntroduction: Sotorasib has shown efficacy in a phase 3 trial compared to docetaxel among previously treated non-small cell lung cancer (NSCLC) patients with a KRAS G12C mutation. However, its real-world effectiveness and tolerance, especially post-immunotherapy, remain debated. Methods: This French retrospective multicentre study analysed NSCLC patients receiving at least one dose of sotorasib as part of early access program The main objective was to assess real-world progression-free survival (rwPFS), and secondary objectives included assessment of overall survival (rwOS) and sotorasib-related hepatotoxicity. Results: 458 patients from 76 centres were analysed, with a median age 65.8. Among them, 43.4 % were female, 28.3 % had performance status ≥ 2, 95.4 % were active/former smokers, and 38.0 % had brain metastases with 55.2 % in progression at sotorasib initiation. PD-L1 expression was < 1 %, ≥ 1-49 %, ≥ 50 %, and unknown in 35.1 %, 34.1 %, 23.4 %, and 7.4 % of patients, respectively. Most patients had received prior treatments (96.7 %), including immunotherapy (54.9 %). Median (95 % confidence interval [CI]) rwPFS and rwOS were 3.5 (3.1-4.2) and 8.3 (7.5-9.3) months, with a median (95 % CI) follow-up of 15.8 (13.9-17.3) and 16.4 (15.5-17.3) months, respectively. The real-world objective response rate (rwORR) was 33.2 % and disease control rate (rwDCR) was 63.2 %. In patients with brain metastases, cerebral rwORR and rwDCR were 20.1 % and 66.9 %, respectively. Grade 3-4 adverse events related to hepatotoxicity occurred in 5.2 % of patients. Sotorasib was discontinued for toxicity in 16.5 % of patients. Conclusion: This study gave insights into effectiveness and safety of sotorasib in a real-world setting, in advanced or metastatic KRAS G12C-mutated non-squamous NSCLC.
Impact of early versus conventional kidney replacement therapy initiation in tumor lysis syndrome: a target trial emulation
Justine Serre, Guillaume Mulier, Charlotte Boud’hors, Marie Lemerle, Moustafa Abdel-Nabey, Corentin Orvain, Anis Chaba, Lucie Biard, Julien Demiselle, Lara Zafrani
Annals of Intensive Care, 2025, 15, pp.15:49. ⟨10.1186/s13613-025-01439-x⟩
Article dans une revueAbstractBackground In the context of tumor lysis syndrome (TLS), the optimal timing and criteria for initiating kidney replacement therapy (KRT) remain unclear. This study aims to assess the effect of initiating KRT at various phosphatemia thresholds on Major Adverse Kidney Events at day 30 (MAKE30). Methods and results We retrospectively emulated a pragmatic clinical trial comparing the effect of KRT initiation at various phosphatemia thresholds versus a conventional approach during TLS on MAKE30. All consecutive patients admitted to the ICU at Saint-Louis University hospital in Paris and Angers University hospital between January 2007 and June 2020, presenting with laboratory TLS were included. The design criteria of a clinical trial were mimicked by using the cloning, censoring and weighting method. The primary outcome was the MAKE30 composite outcome, considering only KRT requirement between day 7 and day 30 for the dialysis criteria. We evaluated multiple phosphatemia thresholds to guide KRT initiation, ranging from 6.20 mg.dL-1 to 9.30 mg.dL-1. Among the initial population of 220 patients, 192 were included in the emulated trial (median age 60 years old, with non-Hodgkin Lymphoma and Acute Leukemia being the most frequent hematological malignancies). TLS-related AKI occurred in 140 patients, and 75 patients met the criteria for MAKE30. Regardless of the phosphate threshold considered, KRT initiation based on phosphate level was not associated with a significant difference in the MAKE30 rate. KRT requirement during the first 7 days (Odd Ratio [OR] 4.01 [1.65–4.86], p = 0.003) and non-renal SOFA (OR 1.39 per 1 point increment [1.25–1.57], p < 0.001) were identified as factors associated with MAKE30 (multivariable analysis). Conclusion Our results do not support the strategy of KRT initiation based on a sole critical phosphatemia level in TLS patients.
Collecting Duct Carcinoma: Characteristics and Survival Outcomes From UroCCR Database (CDCSurv UroCCR n °141)
Louis-Pacome Le Mevel, Jean-Christophe Bernhard, Mokrane Yacoub, Thibaut Waeckel, Céline Bazille, Cecile Champy, Maria Mamodaly, Karim Bensalah, Nathalie Rioux-Leclercq, Constance Michel, Ilhem Hergli, Louis Surlemont, Julie Leclerc, Morgan Rouprêt, Franck Bruyère, Gaëlle Fromont-Hankard, Thibaut Tricard, Véronique Lindner, Bastien Parier, Sophie Ferlicot, Jean-Francois Hermieu, Margot Bucau, Caroline Pettenati, Souhil Lebdai, Thibaut Culty, Cosmina Nedelcu, Merzouka Zidane Marinnes, Pierre Bigot
Clinical Genitourinary Cancer, 2025, 23 (2), pp.102305. ⟨10.1016/j.clgc.2025.102305⟩
Article dans une revueAbstractRenal collecting duct carcinoma is a rare and aggressive cancer with poor prognosis. This retrospective study analyzed 29 patients from the UroCCR database. Median cancer-specific survival was 21 months, with frequent early recurrences. Localized disease and smaller tumors were linked to better outcomes, highlighting the important need for improved management and innovative therapeutic approaches. Objectives: To describe characteristics and survival outcomes of patients with renal collecting duct carcinoma (RCDC). Methods: We retrospectively analyzed data from patients treated for RCDC and included in the UroCCR database between 2007 and 2023. All tumors had a centralized pathological review by a CARARE network pathologist. Oncologic outcomes for cancer-specific survival (CSS) and progression-free survival (PFS) were estimated using the Kaplan-Meier method. Results: A total of 29 patients with RCDC were included. The prevalence of RCDC in the UroCCR database was 0.18% (29/16133). The median age was 63 years (45-81). At diagnosis, 20 (69%) patients were symptomatic and 9 (31%) had a metastatic disease. Partial and radical nephrectomy were performed in respectively 8 (29.6%) and 19 (70.4%) cases. The median CSS were 21 months (95% CI 9.6-32) and median PFS was 7 months (95% CI 3.6-10.3). In the nonmetastatic group, the median CSS was 22 months (95% CI: 6.2-37), and median PFS was 12 months (95% CI: 0-39). Two years estimated PFS and CSS rates were respectively 29.7% and 38%. A localized disease ( P = .012) and a tumor size inferior to 4 cm ( P = .045) were associated with better oncological outcomes. Conclusion: RCDC is a rare cancer with poor prognosis, and no treatment has demonstrated a significant improvement in survival. Recurrences are frequent and early. Management is heterogeneous and ineffective. These outcomes reinforce the need to better understand this tumor and evaluate alternative treatments. Clinical Genitourinary Cancer, Vol. 23, No.xxx, 102305 (c) 2025 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)
Circulating Vesicular-bound HLA-G as Noninvasive Predictive Biomarker of CLAD After Lung Transplantation
Olivier Brugière, Dora Dreyfuss, Ronan Guilet, Sophie Rong, Sandrine Hirschi, Benjamin Renaud-Picard, Martine Reynaud-Gaubert, Benjamin Coiffard, Vincent Bunel, Jonathan Messika, Xavier Demant, Jérôme Le Pavec, Gaelle Dauriat, Christel Saint Raymond, Loic Falque, Jean-Francois Mornex, Adrien Tissot, David Lair, Aurelie Le Borgne Krams, Veronique Bousseau, Antoine Magnan, Clément Picard, Antoine Roux, Matthieu Glorion, Maryvonick Carmagnat, Florence Gazeau, Kelly Aubertin, Edgardo Carosella, Alexandre Vallée, Cecile Landais, Nathalie Rouas-Freiss, Joel Lemaoult
Transplantation, 2025, 109 (4), pp.736-745. ⟨10.1097/TP.0000000000005175⟩
Article dans une revueAbstractBackground: Circulating extracellular vesicles (EVs) have shown promising results as noninvasive biomarkers for predicting disease outcomes in solid organ transplantation. Because in situ graft cell expression of the tolerogenic molecule HLA-G is associated with acceptance after lung transplantation (LTx), we hypothesized that plasma EV-bound HLA-G (HLA-G EV ) levels could predict chronic lung allograft dysfunction (CLAD) development. Methods: We analyzed 78 LTx recipients from the Cohort-for-Lung-Transplantation cohort, all in a stable (STA) state within the first year post-LTx. At 3 y, 41 patients remained STA, and 37 had CLAD (bronchiolitis obliterans syndrome, BOS, [n = 32] or restrictive allograft syndrome [n = 5]). HLA-G EV plasma levels were measured at month 6 (M6) and M12 in 78 patients. CLAD occurrence and graft failure at 3 y post-LTx were assessed according to early HLA-G EV plasma levels. Results: In patients with subsequent BOS, (1) HLA-G EV levels at M12 were significantly lower than those in STA patients ( P = 0.013) and (2) also significantly lower than their previous levels at M6 ( P = 0.04).A lower incidence of CLAD and BOS and higher graft survival at 3 y were observed in patients with high HLA-G EV plasma levels at M12 (high versus low HLA-G EVs patients [cutoff 21.3 ng/mL]: freedom from CLAD, P = 0.002; freedom from BOS, P < 0.001; and graft survival, P = 0.04, [log-rank]). Furthermore, in multivariate analyses, low HLA-G EV levels at M12 were independently associated with a subsequent risk of CLAD, BOS, and graft failure at 3 y ( P = 0.015, P = 0.036, and P = 0.026, respectively [Cox models]). Conclusions: This exploratory study suggests the potential of EV-bound HLA-G plasma levels as a liquid biopsy in predicting CLAD/BOS onset and subsequent graft failure. Trial registration: ClinicalTrials.gov NCT00980967.
Corticosteroids in immunocompromised ICU patients with severe COVID-19: a multicenter retrospective study
Claire Dupuis, Jean-François Timsit, Julien Domitile, Kada Klouche, Laure Calvet, Mathilde Neuville, Shidasp Siami, Yves Cohen, Virginie Laurent, Bruno Mourvillier, Dany Goldgran-Toledano, Carole Schwebel, Stéphane Ruckly, Ferhat Meziani, Matthieu Raymond, Armand Mekontso Dessap, Bertrand Souweine
Scientific Reports, 2025, 15 (1), pp.27252. ⟨10.1038/s41598-025-10864-8⟩
Article dans une revueAbstractImmunocompromised patients were excluded most of the time from trials testing corticosteroids in COVID-19. This study aimed to assess the associations between early corticosteroid use and (1) mortality at day 60, and (2) the occurrence of nosocomial infections in immunocompromised patients with severe COVID-19 admitted to the ICU. It was a multicentre retrospective study, achieved in French ICUs of the Outcomerea™ network and medical ICUs of 4 other hospitals in France. This study included immunocompromised patients admitted to an ICU between January 1, 2020, and August 31, 2022, for severe COVID-19, with an ICU stay of more than 2 days. Patients were classified as receiving early corticosteroid therapy if they were given steroids within the first 5 days following ICU admission. Each patient was categorized into one of four immunosuppression subgroups: ‘corticosteroid therapy,’ ‘monocytic alteration,’ ‘cellular immunosuppression,’ or ‘humoral immunosuppression.’ Survival analyses were performed, and confounding by indication was addressed using propensity score weighting with overlap. 383 patients were included, 50 were into the no-early-corticosteroids group and 333 in the early-corticosteroids group. In the overlap cohort, 118 were included (46 in the non-early-corticosteroids and 72 in the early-corticosteroids group). There was no association with day-60 mortality (IPTWoverlapHR = 0.97, 95% CI [0.51; 1.85], p = 0.92). There was also no association with the occurrence of nosocomial infections (IPTWoverlapSubHR = 2.59, CI 95% [0.77; 8.7], p = 0.13). We report that steroids had no benefit on mortality in immunocompromised patients admitted to ICU for severe COVID-19.
Risk of incident cancer in patients with Inflammatory Bowel Disease with prior breast cancer: a multicenter cohort study
Guillaume Le Cosquer, Julien Kirchgesner, Cyrielle Gilletta de Saint Joseph, Philippe Seksik, Aurélien Amiot, David Laharie, Maria Nachury, Cléa Rouillon, Vered Abitbol, Alexandre Nuzzo, Stéphane Nancey, Mathurin Fumery, Amélie Biron, Nicolas Richard, Romain Altwegg, Driffa Moussata, Bénédicte Caron, Mathias Vidon, Catherine Reenaers, Mathieu Uzzan, Jean-Marie Reimund, Mélanie Serrero, Marion Simon, Alban Benezech, Félix Goutorbe, Anne-Laure Pelletier, Ludovic Caillo, Charlotte Vaysse, Florian Poullenot
Clinical Gastroenterology and Hepatology, 2025, 23 (10), pp.1824-1833.e3. ⟨10.1016/j.cgh.2024.09.034⟩
Article dans une revueAbstractBackground and AimsBreast cancer is the most common malignancy observed in patients with inflammatory bowel diseases (IBD). The aim of our study was to evaluate incident cancer rate (recurrence or new-onset cancer) in a cohort of IBD patients with a history of breast cancer according to the subsequent IBD treatment provided.MethodsA multicenter retrospective study included consecutive IBD patients with prior breast cancer. The inclusion date corresponded to the diagnosis of index malignancy. Follow-up lasted from cancer diagnosis until the occurrence of incident cancer.ResultsAmong 207 patients included (median disease duration: 13 years [IQR 6 - 21]), first line treatment (median interval of 28 months [IQR 7 - 64]) was a conventional immunosuppressant in 19.3 % of patients, anti-TNF in 19.8 %, vedolizumab in 7.2 % and ustekinumab in 1.9 %.After a median follow-up of 71 months [IQR, 34 - 148], 42 (20%) incident cancers were observed (34 breast cancer recurrences). Adjusted incidence rates per 1000 person-years were 10.2 (95%CI 6.0- 16.4) for the untreated arm and 28.9 (95%CI 11.6-59.6) for exposed patients (p= 0.0519). There was no significant difference between treated patients and controls regarding incident-cancer free survival rates (p=0.4796). In multivariable analysis, factors associated with incident cancer were stage T4d (p=0.036), triple negative tumor (p=0.016) and follow-up of less than 71 months (p=0.005).ConclusionWe did not find a statistically significant increase in incident breast cancer related to IBD treatment beyond the already known poor prognostic factors of breast cancer.
Clinical profile, short and long-term outcomes of non-ischaemic cardiogenic shock: A FRENSHOCK sub-analysis
Miloud Cherbi, François Roubille, Edouard Gerbaud, Eric Bonnefoy-Cudraz, Nicolas Lamblin, Laurent Bonello, B Levy, Pascal Lim, Hamid Merdji, Meyer Elbaz, Hadi Khachab, Jérémy Bourenne, Marie‐france Seronde, Guillaume Schurtz, Brahim Harbaoui, Gerald Vanzetto, Nicolas Combaret, Benoît Lattuca, Guillaume Leurent, Etienne Puymirat, Clément Delmas
ESC Heart Failure, 2025, 12 (3), pp.2335-2346. ⟨10.1002/ehf2.15046⟩
Article dans une revueAbstractAims: Although predominant in routine practice, non-ischaemic cardiogenic shock (NICS) remains underrepresented in past studies, mainly focused on ischaemic cardiogenic shock (CS). This study aims to describe the current NICS picture and define its independent correlates of short- and long-term outcomes.Methods and results: FRENSHOCK is a prospective registry including 772 CS patients from 49 centers. One-year mortality was the primary outcome. One-month mortality and the composite of 1-year mortality, heart transplantation (HTx), or ventricular assistance device (VAD) were secondary outcomes. Within 772 patients included, 492 (63.7%) were NICS. One-month and 1-year mortality rates were 25.6% and 45.7%, with a combined endpoint of 1-year mortality, HTx, or VAD of 53.9%. Multivariate analysis showed five independent factors for 1-year mortality: age (per year: aHR 1.03 [1.01-1.05], P < 0.01), chronic kidney disease (CKD) (aHR 1.87 [1.25-2.80], P < 0.01), norepinephrine use (aHR 1.52 [1.02-2.26], P = 0.04), active cancer (aHR 1.91 [1.07-3.42], P = 0.03) and acute renal replacement therapy (aHR 1.57 [1.01-2.46], P = 0.049). Age, CKD and norepinephrine were also predictive of 1-month mortality and 1-year mortality and/or HTx and/or VAD. Additionally, 1-month mortality was associated with septic triggers, and 1-year mortality and/or HTx and/or VAD with acute mechanical circulatory support, NYHA stage ≥ 3 and fluid administration.Conclusions: In this large study, NICS accounted for almost two-thirds of all CS cases, with substantial rates of short- and long-term mortality. Future studies should evaluate interventions to improve early stratification and management. NCT02703038.
Lipophilic molecular rotor to assess the viscosity of oil core in nano-emulsion droplets
Mohamed Elhassan, Carla Faivre, Halina Anton, Guillaume Conzatti, Pascal Didier, Thierry Vandamme, Alteyeb S Elamin, Mayeul Collot, Nicolas Anton
Soft Matter, 2025, 21 (6), pp.1212 - 1224. ⟨10.1039/d4sm01234h⟩
Article dans une revueAbstractCharacterization of nanoscale formulations is a continuous challenge. Size, morphology and surface properties are the most common characterizations. However, physicochemical properties inside the nanoparticles, like viscosity, cannot be directly measured. Herein, we propose an original approach to measuring dynamic viscosity using a lipidic molecular rotor solubilized in the core of nano-formulations. These molecules undergo conformational changes in response to viscosity variations, leading to observable changes in fluorescence intensity and lifetime, able to sense the volume properties of dispersed nanodomains. The lipophilic molecular rotor (BOPIDY derivatives) was specifically synthesized and characterized as oil viscosity sensing in large volumes. A second part of the study compares these results with rBDP-Toco in nano-emulsions. The objective is to evaluate the impact of the formulation, droplet size and composition on the viscosity of the droplet's core. The lipophilic rotor showed a universal behavior whatever the oil composition, giving a master curve. Applied to nano-formulations, it reveals the viscosity inside the nanoemulsion droplets, enabling the detection of slight variations between reference oil samples and the nano-formulated ones. This new tool opens the way to the fine characterization of complex colloids and multi-domain nano and micro systems, potentially applied to hybrid materials and biomaterials.
Real-world efficacy of the dabrafenib-trametinib (D-T) combination in BRAF V600E-mutated metastatic non-small cell lung cancer (NSCLC): Results from the IFCT-2004 BLaDE cohort
Aurélie Swalduz, Michèle Beau-Faller, David Planchard, Julien Mazieres, Sophie Bayle-Bleuez, Didier Debieuvre, Vincent Fallet, Margaux Geier, Alexis Cortot, Sébastien Couraud, Catherine Daniel, Charlotte Domblides, Eric Pichon, Elizabeth Fabre, Sébastien Larivé, Ulrike Lerolle, Pascale Tomasini, Marie Wislez, Pascale Missy, Franck Morin, Virginie Westeel, Jean-Bernard Auliac
Lung Cancer, 2025, 199, pp.108038. ⟨10.1016/j.lungcan.2024.108038⟩
Article dans une revueAbstractBRAF V600E mutations occur in 2-5 % of advanced non-small cell lung cancer (NSCLC) patients. The dabrafenib-trametinib (D-T) combination was associated with improved and durable OS in patients in phase II. This study (IFCT-2004 BLaDE study) reported the efficacy of D-T combination in a large retrospective French real-world multicenter cohort of patients with advanced BRAF V600E-mutated NSCLC.
New Islet Model for 3D Study of Endothelial and β Cell Interactions: Relevance for the Screening of Cytoprotective Agents
Saidi Amira, Tollard Clémence, Liu Liyao, El Khallouqi, Sévigny Jean, Auger Cyril, Kauffenstein Gilles, Fatiha El-Ghazouani, Laurence Kessler, Florence Toti
Journal of visualized experiments : JoVE, In press, ⟨10.3791/68220⟩
Article dans une revueAbstractThis protocol details an optimized method for the production of small stable spheroids, their culture, and 3D imaging, for the study of the endothelial and insulin-producing β cells interactions in a 3D model of pancreatic islets. The 150-200 μm spheroids, mirroring the lowest range of islet sizes, were prepared from a selected ratio combining 1 intra-islet endothelial cells (MS-1 cells) to 20 insulin-secreting cells (β-TC-6). Staining, clearing, and mounting challenges of small spheroids and their tackling by employing low-melting point agarose and the CUBIC clearing technique are detailed as well as key points for an efficient analysis of the 3D structure with different probes. Data indicate that NTPDASE-ectonucleotidase 3 does not colocalize with insulin in the spheroid model, suggesting varying maturity and functional levels of β-TC6 and that the complete procedure can also be applied to isolated pancreatic islets, with clear probing of intra-islet vessels. These findings underscore the effectiveness of the 3D imaging protocol in revealing complex pancreatic cell organization and interactions within the islet model.
Biomarkers of sepsis-induced coagulopathy: diagnostic insights and potential therapeutic implications
Anais Curtiaud, Toshiaki Iba, Eduardo Angles-Cano, Ferhat Meziani, Julie Helms
Annals of Intensive Care, 2025, 15 (1), pp.12. ⟨10.1186/s13613-025-01434-2⟩
Article dans une revueAbstractDiagnosing coagulopathy in septic patients remains challenging in intensive care. Disseminated intravascular coagulation (DIC) indeed presents with complex pathophysiology, complicating timely diagnosis. Epidemiological data indicate a significant prevalence of DIC in septic patients, with mortality rates up to 60%. Despite advances, current biomarker-based diagnostic tools often fail to provide early and accurate detection. This review evaluates the utility and limitations of traditional and emerging biomarkers for diagnosing sepsis-induced coagulopathy (SIC) and DIC. We also assess the effectiveness of anticoagulant therapy guided by biomarker-based diagnostic criteria.
Rolled-up gastroretentive gelatin rings for controlled release of riboflavin and captopril
Quoc-Hung Tran, Asad Ur Rehman, Thierry Vandamme, Valeriy Luchnikov
International Journal of Pharmaceutics, 2025, 680, pp.125795. ⟨10.1016/j.ijpharm.2025.125795⟩
Article dans une revueAbstractIn this study, we introduce a rolled-up ring-shaped gastroretentive device, which enables controlled drug release via the radial position of a drug reservoir relative to its surface. The device was formed by rolling up a gelatin film, which was initially wrapped on the surface of an acrylic cylinder. Prior to rolling, a drug reservoir was formed at a predetermined position of the wrapped film. The device containing the drug was packed within gastric-dissolvable gelatin capsule shell. Upon contact with the simulated gastric medium, the prepared capsule was dissolved and rapidly released the ring-shaped device within two minutes. The deployed system then swelled and retained its shape, before eventually disintegration within 24 hours. The disintegration process can be accelerated, if necessary, via the design of "weak points" in the ring's structure, allowing for safe and programmed evacuation through the lower gastrointestinal tract. The rolled-up ring-shaped devices, containing riboflavin or captopril, allowed to control the release rates by the radial position of the drug reservoirs. The developed expandable gastroretentive device presents a promising solution for reducing daily dosages and enhancing personalized treatment.
Association Between Periodontitis and SARS-CoV-2 Infection Severity: A Cross-Sectional Study in a Turkish Population
Aliye Akcalı, Aylin Özgen Alpaydın, Muammer Çelik, Bilge Cansu Uzun Saylan, Mehmet Emin Arayıcı, Olivier Huck
Oral Health and Preventive Dentistry, 2025, 23, pp.479-487. ⟨10.3290/j.ohpd.c_2234⟩
Article dans une revueAbstractPurpose: The aim of the present study was to evaluate the association between periodontitis and SARS-CoV-2 infection severity in a Turkish population.<p>Methods: Adult patients attending hospital consultation and testing positive for SARS-CoV-2 infection were consecutively enrolled in this study. Demographic variables, smoking status, COVID-19 symptoms, SpO 2 levels, and markers of inflammation (D-Dimer, lymphocytes and white blood cells count, CRP) were recorded. Patients suspected of periodontal disease were evaluated using self-reported questionnaires (OHIP-14, modified CDC/AAP questionnaire). Periodontal screening score (PESS) was calculated from the questionnaire. Univariate and multivariate logistic regression analyses were performed to evaluate the association between COVID-19-associated parameters and periodontitis.</p> <div>Results:<p>The study included 134 patients diagnosed with COVID-19. Nearly half of the participants were female (n = 68, 50.7%), and the mean age of the patients was 48.7 ± 18.2 years. A statistically significant majority of individuals (69.2%) were asymptomatic, while 22.3% experienced mild symptoms, and 8.5% reported moderate or severe symptoms. Oxygen saturation was found to be higher in asymptomatic patients (96.4 ± 2.8) compared to mild (90.4 ± 5.1) and moderate/severe patients (86.6 ± 8.9) (P <0.001). There was no statistically significant difference concerning OHIP-14 score (P = 0.316), periodontitis (PESS ≥ 5) (P = 0.130), brushing habits (P = 0.901), and frequency of dental visits (P = 0.975) when considering SARS-CoV-2 infection severity. In multivariate logistic regression analysis, it was concluded that male gender (OR = 2.90, 95% CI: 1.04-8.04, P = 0.040), age 55 and above (OR = 5.94, 95% CI: 1.22-28.76, P = 0.026), and smoking (OR = 0.14, 95% CI: 0.02-0.75, P = 0.022) were statistically significant predictors of SARS-CoV-2 infection severity.</p></div> <div>Conclusions:<p>Even the association between SARS-CoV-2 infection severity and periodontitis, evaluated through self-reported outcome measures, were weak: male gender, age, and smoking were independent risk factors for SARS-CoV-2 infection severity in this patient cohort. Further research is warranted to explore these associations comprehensively.</p></div>
Physical Exercise as a Therapeutic Approach for Patients Living with Type 2 Diabetes: Does the Explanation Reside in Exerkines?—A Review
Daphné Bernard, Ariane Sultan, Karim Bouzakri
International Journal of Molecular Sciences, 2025, 26 (17), pp.8182. ⟨10.3390/ijms26178182⟩
Article dans une revueAbstractFor a few decades, Type 2 Diabetes (T2D) has been recognized as a worldwide public health issue. T2D relies on systemic insulin resistance leading to Beta cell dysfunction. Nowadays, lifestyle modifications, such as improving eating habits and increasing physical activity, represent the first recommendations for managing T2D. Physical exercise, as a structured physical activity, is now considered as a non-pharmacological treatment with a wide range of beneficial effects, especially for people living with T2D. The review intends to summarize the current knowledge of physical exercise benefits in a context of T2D: from “unwanted” adipose tissue reduction to Beta cell health improvement. Moreover, we try to suggest an underlying mechanism explaining physical exercise beneficial effects in the context of T2D focusing on exerkines, molecules secreted in response to physical exercise. With this review, we highlight the beneficial impact of post-exercise secretions on Beta cell health and encourage research to continue in this direction. Identifying new exerkines with beneficial effects in the context of T2D could represent a promising approach for managing metabolic diseases.
Hemoglobin in cardiogenic shock: the lower, the poorer survival
Miloud Cherbi, Bruno Levy, Hamid Merdji, Etienne Puymirat, Eric Bonnefoy-Cudraz, Fanny Bounes, Meyer Elbaz, Olivier Morel, Guillaume Leurent, Nicolas Lamblin, Edouard Gerbaud, Paul Gautier, François Roubille, Clément Delmas
Journal of Intensive Care, 2025, 13 (1), pp.36. ⟨10.1186/s40560-025-00805-y⟩
Article dans une revueAbstractBackground: Cardiogenic shock (CS) is a severe hemodynamic condition with high mortality. Although extremely frequent in daily practice, the impact of anemia in CS is largely unknown. This study focuses on the consequences of low hemoglobin (Hb) level on the outcomes of CS patients. Methods: FRENSHOCK is a prospective registry including 772 CS patients from 49 centers. One-month and one-year mortalities were analyzed according to the admission level of Hb. Results: Among 754 patients, 71.8% were male, with a mean age of 65.8 (± 14.8) years, and 361 (47.9%) presenting with anemia. Four groups were defined, depending on admission Hb levels by quartiles: Q1: Hb < 11.0 g/dL, Q2: Hb 11-12.6 g/dL, Q3: Hb > 12.6-14 g/dL, and Q4: Hb > 14.0 g/dL. Patients from the Q1 group required more frequent renal replacement therapy and norepinephrine. A significant increase in all-cause mortality was observed across Hb quartiles at 1 month (Ptrend = 0.035) and 1 year (Ptrend < 0.01). Q1 patients had 1.64 times higher mortality at 1 month (1.09-2.47, p = 0.02) and 2.53 times higher mortality at 1 year (1.84-3.49, p < 0.01) compared to Q4. The negative effect of low Hb level was confirmed in multivariate Cox regression adjusted for baseline characteristics, and was stronger in men, non-ischemic CS, patients without CKD and patients aged < 67 years. Conclusion: Anemia is a common condition frequently intertwined with CS worsening both short- and long-term mortality. Further randomized studies are warranted to understand its mechanisms and adapt the transfusion strategy.
SGLT2 expression in human vasculature and heart correlates with low-grade inflammation and causes eNOS-NO/ROS imbalance
Ali Mroueh, Paola Algara-Suarez, Walaa Fakih, Dal-Seong Gong, Kensuke Matsushita, Sin-Hee Park, Said Amissi, Cyril Auger, Gilles Kauffenstein, Nicolas Meyer, Patrick Ohlmann, Laurence Jesel, Michael Paul Pieper, Benjamin Marchandot, Olivier Morel, Jean-Philippe Mazzucotelli, Valérie Schini-Kerth
Cardiovascular Research, 2024, 121 (4), pp.643-657. ⟨10.1093/cvr/cvae257⟩
Article dans une revueAbstractAbstract Aims Sodium-glucose co-transporter 2 inhibitors (SGLT2i) show a cardioprotective effect in heart failure and myocardial infarction, pathologies often associated with low-grade inflammation. This cross-sectional study aims to investigate whether low-grade inflammation regulates SGLT2 expression and function in human vasculature, heart, and endothelial cells (ECs). Methods and results Human internal thoracic artery (ITA), left ventricle (LV) specimens, and cultured porcine coronary artery ECs were used. Expression of target molecules was assessed using RT-qPCR, western blot analysis, and immunofluorescence staining, and the generation of reactive oxygen species (ROS) and nitric oxide (NO) using fluorescent probes. The function of SGLT2 was investigated using empagliflozin and SGLT1 or 2 siRNA. SGLT2 mRNA and protein levels in ITA and LV specimens were correlated with the level of low-grade inflammation, markers of the angiotensin system, and EC activation. SGLT2 staining was observed in the ITA endothelium and smooth muscle, the coronary microcirculation, and cardiomyocytes. Elevated ROS formation in high SGLT2-expressing specimens was reduced by inhibition of the angiotensin system, SGLT2, and TNF-α. Exposure of ECs to IL-1ß, IL-6, and TNF-α led to an increase in SGLT1 and SGLT2 mRNA and protein expression, up-regulation of components of the angiotensin system, enhanced ROS and decreased NO formation, and activation of NF-κB. The stimulatory effect of TNF-α was prevented by N-acetylcysteine and inhibition of the angiotensin system, SGLT2 but not SGLT1, and NF-κB. Conclusion Low-grade inflammation is closely associated with SGLT2 expression in human vasculature and heart, and this response contributes to a feedforward mechanism with the AT1R/NADPH oxidase pathway to cause eNOS-NO/ROS imbalance.
The prohibitin ligand IN44 decreases Porphyromonas gingivalis mediated inflammation
Catherine Petit, Céline Stutz, Pierre-yves Gegout, Chloé Bloch, Hayriye Özcelik, Nicolas Anton, Redouane Tabti, Laurent Désaubry, Olivier Huck, Catherine Petit
BMC Oral Health, 2024, 24, ⟨10.1186/s12903-024-05209-2⟩
Article dans une revueAbstract<div><p>Background Periodontitis is an inflammatory disease causing destruction of periodontal tissues. Controlling inflammation is crucial for periodontitis treatment. Prohibitins (PHBs) are emerging targets in the treatment of inflammatory diseases. To identify compounds that would alleviate periodontitis, several small molecules that directly target PHBs and display various pharmacological activities were screened to decrease Porphyromonas gingivalis induced inflammation. Indeed, IN44, a new PHB ligand that has been shown to inhibit STAT3 and NF-kB signaling, suggesting that it may alleviate periodontitis. This study aimed to assess IN44's impact on inflammation elicited by P. gingivalis.</p></div> <div>Methods<p>In vitro, IN44 cytotoxicity was tested on periodontal cells with AlamarBlue and Live/Dead assays. Its effect on cytokines and mitochondrial ROS production were evaluated using ELISA and Mitosox assay. In mouse, systemic inflammation and experimental periodontitis were induced to assess IN44's therapeutic effects.</p></div> <div>Results<p>In vitro, IN44 (50 µM) showed no cytotoxicity on periodontal cells. It significantly reduced pro-inflammatory cytokine secretion and mitochondrial ROS in P. gingivalis-infected epithelial cells. Proteome analysis on infected epithelial cells revealed modulation of HSP60 and Akt expression by IN44. In vivo, IN44 demonstrated antiinflammatory effects in a mouse model of systemic inflammation induced by P. gingivalis, and it improved periodontal healing.</p></div> <div>Conclusion<p>These findings suggest that PHBs may warrant consideration as therapeutic targets for periodontitis and possibly other inflammatory disorders.</p></div>
Advanced Hybrid Closed Loop Algorithm Use in Type 1 Diabetes: The French MiniMed™ Glycemic Control and Quality of Life Study
Laurence Kessler, Charles Thivolet, Alfred Penfornis, Didier Gouet, Christine Coffin, Myriam Moret, Sophie Borot, Saïd Bekka, Emmanuel Sonnet, Michael Joubert, Sandrine Lablanche, Geoffrey Burtin, Fabio Di Piazza, Tim van den Heuvel, Ohad Cohen
Diabetes Therapy, 2024, ⟨10.1007/s13300-024-01673-9⟩
Article dans une revuePersonalized screening before subcutaneous cardioverter-defibrillator implantation: Usefulness and outcomes in clinical practice—the S-ICD screening SIS prospective study
Maxime de Guillebon, Rodrigue Garcia, Stéphane Debeugny, Hugues Bader, Vincent Probst, Nicolas Bidegain, Kumar Narayanan, Jacques Mansourati, Aymeric Menet, Pierre Ollitrault, Christelle Marquié, Benoît Guy-Moyat, Pierre Mondoly, Philippe Chevalier, Nicolas Badenco, Nathalie Behar, Laurence Jesel-Morel, Bertrand Pierre, Nicolas Lellouche, Jean-Claude Deharo, Peggy Jacon, Frédéric Anselme, Serge Boveda, Eloi Marijon
Heart Rhythm, 2024, 21 (12), pp.2530-2535. ⟨10.1016/j.hrthm.2024.05.043⟩
Article dans une revueAbstract<b>Background:</b> Electrocardiographic screening before subcutaneous implantable cardioverter-defibrillator (S-ICD) implantation is unsuccessful in around 10% of cases. A personalized screening method, by slightly moving the electrodes, to obtain a better R/T ratio has been described to overcome traditional screening failure. <b>Objective:</b> The objectives of the SIS study were to assess to what extent a personalized screening method improves eligibility for S-ICD implantation and to evaluate the inappropriate shock rate after such screening success. <b>Methods:</b> All consecutive patients eligible for an S-ICD implantation were prospectively recruited across 20 French centers between December 2019 and January 2022. In case of traditional screening failure, patients received a second personalized screening. If at least 1 vector was positive, the personalized screening was considered successful, and the patient was eligible for implantation. <b>Results:</b> The study included 474 patients (mean age, 50.4 ± 14.1 years; 77.4% men). Traditional screening was successful in 456 (96.2%) cases. This figure rose to 98.3% (n = 466; P = .002) when personalized screening was performed. All patients implanted after successful personalized screening had correct signal detection on initial device interrogation. Nevertheless, after 1-year follow-up, 3 of the 7 patients (43%) implanted with personalized screening experienced inappropriate shock vs 18 of the 427 patients (4.2%) with traditional screening and S-ICD implantation (P = .003). <b>Conclusion:</b> Traditional S-ICD screening was successful in our study in a high proportion of patients. Considering the small improvement in success of screening and a higher rate of inappropriate shock, a strategy of personalized screening cannot be routinely recommended. <b>Clinicaltrials:</b> gov identifier: NCT04101253
Intact Fish Skin Graft to Treat Deep Diabetic Foot Ulcers
Dured Dardari, Alberto Piaggesi, Louis Potier, Ariane Sultan, Holger Diener, Maude Francois, Bernhard Dorweiler, Benjamin Bouillet, Jocelyne M’bemba, Lucy Chaillous, Giacomo Clerici, Laurence Kessler, Walter Wetzel-Roth, Martin Storck, Olafur Birgir Davidsson, Baldur Baldursson, Hilmar Kjartansson, John Lantis, Guillaume Charpentier
NEJM Evidence, 2024, 3 (12), ⟨10.1056/EVIDoa2400171⟩
Article dans une revueAbstractBackground: Diabetic foot ulcers are chronic, difficult to heal, and potentially life-threatening. Few medical devices have been studied in diabetic ulcers penetrating to bone or tendon. Methods: We conducted an international, open-label randomized controlled trial, randomly assigning patients with diabetic ulcers penetrating to bone, joint, or tendon 1:1 to intact fish skin graft or standard wound care, with assigned treatment applied through 14 weeks. The primary end point was the proportion of ulcers healed at 16 weeks, defined as reepithelization as identified by the investigator, and confirmed 14 days later. A blinded adjudication committee confirmed healing at both time points. Healing was also assessed at 20 and 24 weeks. Results: Between July 2020 and November 2022, 255 patients were randomly assigned to intact fish skin graft (n=129) or standard of care (n=126). Healing was achieved in 44% of patients at 16 weeks with intact fish skin graft compared with 26% for standard of care (P<0.001, unadjusted), with additional healing at 20 weeks (46% vs. 32%) and 24 weeks (55% vs. 38%). Mean (SD) time to healing was 17.3 (0.69) weeks (95% confidence interval [CI], 15.5 to 18.7) for the intact fish skin graft group and 19.4 (0.66) weeks (95% CI, 18.1 to 20.7) for the standard of care group. In a Cox regression, intact fish skin graft was associated with faster time to healing (hazard ratio, 1.59; 95% CI, 1.07 to 2.36). Primary wound infections were the most common adverse event, occurring in 39 (30.2%) of patients in the intact fish skin graft group and 31 (24.6%) of patients in the standard of care group. Conclusions: Among patients with deep diabetic foot ulcers, treatment with intact fish skin graft was superior to standard of care in proportion of wounds healed at 16 weeks and was associated with faster time to healing. (Funded by European Commission Fast Track to Innovation Horizon 2020, and Kerecis Ltd. ClinicalTrials.gov NCT04257370.).
Oral invasive procedures in Glanzmann thrombasthenia: a retrospective observational study
Maxime Delarue, François Séverac, Martine Soell, Léa Pierre, Dominique Desprez, Fabien Bornert
Research and Practice in Thrombosis and Haemostasis, 2024, 8 (8), pp.102619. ⟨10.1016/j.rpth.2024.102619⟩
Article dans une revueAbstractBackground: Glanzmann thrombasthenia (GT) is a very rare autosomal inherited bleeding disease affecting megakaryocyte lineage with impacts on oral health such as gingival bleeding, which requires specific management protocols. Very few clinical cases have been published in the dental and hematologic literature. Objectives: This study focuses on a series of 21 patients affected specifically by GT and their hemorrhagic prophylaxis management with the use of recombinant activated factor VII (rFVIIa) for dental extractions and full-mouth debridement. Methods: Data were collected from medical and dental records. rFVIIa was administered prophylactically for oral procedures, following a standardized protocol. Each sessions were performed by experienced oral surgeons, and outcomes were analyzed with a focus on bleeding complications and adverse events. Results: Forty-one full-mouth debridements and 176 dental extractions were performed during 102 sessions of dental care in an outpatient setting. A total of 226 injections of rFVIIa was delivered. The mean number of injections was 2.2 (range, 1-4) per dental procedure. The overall rate of bleeding complications was 5.9% (n = 6). All 6 hemorrhagic complications were classified as minor bleeding. No thromboembolic event or allergic reaction was observed. Conclusion: The data presented in this retrospective observational study support the efficacy and safety of rFVIIa for the prevention of bleeding during invasive dental procedures in patients affected by GT. The rFVIIa protocol presented here seems to be a safe and efficient protocol for the prevention of bleeding during invasive oral procedures.
Impact of genetic alterations on long-term outcomes in resectable intrahepatic cholangiocarcinoma: meta-analysis
Fabio Giannone, Fabio del Zompo, Antonio Saviano, Erwan Pencreach, Catherine Schuster, Thomas F Baumert, Patrick Pessaux
British Journal of Surgery, 2024, 111 (11), ⟨10.1093/bjs/znae257⟩
Article dans une revueAbstractAbstract Background Intrahepatic cholangiocarcinoma is a public health threat because of its aggressiveness. Its genetic background differs from other biliary cancers. The aim of this study was to investigate the impact of genetic alterations on long-term outcomes. Methods PubMed, MEDLINE, Scopus, and Cochrane Library databases were systematically searched for studies assessing long-term outcomes after resection of intrahepatic cholangiocarcinoma according to genetic mutational profiling until 31 May 2022. The main outcome was the impact of genetic alterations on long-term outcomes in these patients. HR (95% c.i.) was used for effect size. Publication bias was investigated. Results A total of 24 retrospective studies were included. KRAS, IDH1/2, and TP53 were identified as the only three genes whose mutation correlated with survival (HR: 2.476, 95% c.i. 1.67–3.671, P < 0.01 for KRAS; HR: 0.624, 95% c.i. 0.450–0.867, P < 0.01 for IDH1/2; and HR: 2.771, 95% c.i. 2.034–3.775, P < 0.01 for TP53). The prevalence of KRAS and IDH1/2 mutations differed between western and eastern studies (P < 0.001 for both genes). Conclusion Determining the overall prevalence of the most common actionable and undruggable mutations may help to expand target therapy indications in the adjuvant setting. Inconsistent results have been found for some infrequent gene alterations; their rare involvement could potentially bias their prognostic meaning.
The relevance of the ethics statement of the ISHLT
Savitri Fedson, Kelly Bryce, Andrew Courtwright, Jon Dark, Tom Egan, Are Martin Holm, Olivia Kates, Jacob Lavee, Anne Olland
The Journal of Heart and Lung Transplantation, 2024, 43 (11), pp.1816-1817. ⟨10.1016/j.healun.2024.08.013⟩
Article dans une revueHip and knee arthroplasty in one surgical session: early morbi-mortality study
Henri Favreau, Jean-Luc Raynier, Thomas Rousseau, Sébastien Lustig, François Bonnomet, Christophe Trojani
Orthopaedics & Traumatology: Surgery & Research, 2024, 110 (7), pp.103955. ⟨10.1016/j.otsr.2024.103955⟩
Article dans une revueAbstractINTRODUCTION: Bilateral prosthetic hip or knee replacement in one surgical session is a procedure that has been widely validated in the literature, whereas hip and knee replacement in one surgical session remains poorly documented. This study reports on the results of these procedures by analyzing early post-operative complications in a retrospective multicenter study. MATERIAL AND METHODS: Between 2009 and 2023, 51 patients underwent hip and knee replacement surgery in a single surgical session at 4 French centers. They were 24 men and 27 women, with a mean age of 68.8 years (36-87); 7 patients were ASA 1, 30 were ASA 2 and 14 ASA 3. Prosthetic hip replacement was always performed first, associated 33 times with the ipsi-lateral knee and 18 times with the contralateral knee. All early complications, within the first 90 days post-operatively, were recorded: death, phlebitis, pulmonary embolism, myocardial infarction, surgical site infection (SSI), knee stiffness treated by mobilization under general anesthesia, urinary tract infection, acute urine retention or any other adverse event related to care. Transfusion rates were also reported. RESULTS: The rate of early complications was 9.8% (5/51). No deaths, no phlebitis, no pulmonary embolism and no SSI were observed. Complications included one myocardial infarction, one urinary tract infection, one superficial infection, one haematoma treated by surgical evacuation and one recurrent instability requiring revision surgery (hip arthroplasty). The transfusion rate was 17.6% (9/51). The complication rate of ASA 3 patients was higher than that of ASA 1 and 2 patients, while there was no difference related to age or BMI. DISCUSSION: Our results confirm the feasibility of single-stage hip and knee replacement, with a low complication rate in ASA 1 and 2 patients. This study adds to the few published works on the subject and reports comparable results. The small sample size and the heterogeneity of patients and centers limit the scope of the results, these limitations being relative to the volume expected for a rare procedure. CONCLUSION: Single-session hip and knee arthroplasty should be reserved for patients selected according to comorbidities: ASA score, age and body mass index. ASA 3 patients have a higher risk of complications. LEVEL OF EVIDENCE: IV; retrospective.
(E, E)-farnesol and myristic acid-loaded lipid nanoparticles overcome colistin resistance in Acinetobacter baumannii
Carla Faivre, Farras Daffa Imtiyaz, Julien Buyck, Sandrine Marchand, Melissa Marcotte, Thomas Henry, Nicolas Anton, Mayeul Collot, Frédéric Tewes
International Journal of Pharmaceutics, 2024, 667 (A), pp.124907. ⟨10.1016/j.ijpharm.2024.124907⟩
Article dans une revueAbstractThe rise of colistin-resistant <i>Acinetobacter baumannii</i> has severely limited treatment options for infections caused by this pathogen. While terpene alcohols and fatty acids have shown potential to enhance colistin’s efficacy, but their high lipophilicity limits their clinical application. To address this, we developed water-dispersible lipid nanoparticles (LNPs) in two sizes (40 nm and 130 nm), loaded with these compounds to act as colistin adjuvants. Among eleven LNP formulations, six significantly reduced colistin’s minimum inhibitory concentration (MIC) by 16- to 64-fold. The most effective, featuring (E,E)-farnesol and myristic acid, were further examined for bactericidal activity, membrane disruption, cytotoxicity, and <i>in vivo</i> efficacy in <i>Galleria mellonella</i> larvae. Time-kill studies demonstrated that at an adjuvant concentration of 60 mg/L, these LNPs eradicated bacteria when combined with 4 mg/L free colistin for resistant isolates (MIC = 128 mg/L) and 0.06 mg/L for susceptible isolates (MIC = 0.5 mg/L), without regrowth. Myristic acid-loaded LNPs combined with free colistin at 1/8 MIC resulted in a 4.2-fold higher mortality rate than the combination with (E,E)-farnesol-loaded LNPs in resistant strains. This result was correlated with a 45-fold faster increase in inner membrane permeability, measured by propidium iodide (PI) uptake, in the presence of myristic acid-loaded LNPs compared with a 13-fold faster increase with (E,E)-farnesol-loaded LNPs. DiSC3(5) assays revealed that LNPs alone depolarised the bacterial inner membrane, with enhanced effects when combined with colistin at 1/8 MIC, a result not observed with colistin alone at this concentration. As with PI uptake, this inner membrane depolarising effect was more pronounced with myristic acid-loaded LNPs than with (E,E)-farnesol-loaded LNPs in resistant strains, suggesting that the colistin adjuvant effect of these lipophilic compounds is due to their ability to help colistin destabilise the bacterial inner membrane. Cytotoxicity assays demonstrated no adverse effects on bone marrow macrophages after 6 h of exposure, although some toxicity was observed after 24 h. No mortality was observed in <i>Galleria mellonella</i> larvae over 7 days following three consecutive days of treatment with colistin and LNPs. Notably, the combination of (E,E)-farnesol-loaded LNPs and colistin significantly improved the survival of <i>Galleria</i> infected with <i>A. baumannii</i>. These results suggest that lipophilic-adjuvant-loaded LNPs may offer a promising strategy to enhance colistin efficacy and combat antibiotic-resistant <i>A. baumannii</i> infections.
2023 SFMU/GICC-SFC/SFGG expert recommendations for the emergency management of older patients with acute heart failure. Part 1: Prehospital management and diagnosis
Nicolas Peschanski, Florian Zores, Jacques Boddaert, Bénedicte Douay, Clément Delmas, Amaury Broussier, Delphine Douillet, Emmanuelle Berthelot, Thomas Gilbert, Cédric Gil-Jardiné, Vincent Auffret, Laure Joly, Jérémy Guénézan, Michel Galinier, Marion Pépin, Philippe Le Conte, Nicolas Girerd, Frédéric Roca, Mathieu Oberlin, Patrick Jourdain, Geoffroy Rousseau, Nicolas Lamblin, Barbara Villoing, Frédéric Mouquet, Xavier Dubucs, François Roubille, Maxime Jonchier, Rémi Sabatier, Saïd Laribi, Muriel Salvat, Tahar Chouihed, Jean-Baptiste Bouillon-Minois, Anthony Chauvin, Pierrick Le Borgne
Archives of cardiovascular diseases, 2024, 117 (11), pp.639-646. ⟨10.1016/j.acvd.2024.08.002⟩
Article dans une revueAbstractAcute heart failure (AHF) is a complex, multifactorial syndromic condition that, until now, did not have a consensual definition [1], [2]. The difficulties in agreeing on a consensual definition of AHF also apply to research, since depending on the application of the field of investigation, the target populations concerned and the therapeutic goals or pathophysiological knowledge sought, the elements defining heart failure (HF) vary, especially among older patients. Thus, although the advent of echocardiography has made it possible to characterize disturbances in myocardial relaxation and altered ventricular filling, marking the birth of the concept of HF with preserved ejection fraction (HFpEF) versus HF with reduced ejection fraction (HFrEF), the different clinical presentations do not always make it possible to determine whether myocardial failure corresponds to a disease of ventricular filling of vascular origin [3].AHF is most often characterized by dyspnoea, lower limb oedema and/or intense asthenia. It is a common presentation in emergency departments (EDs) and has become a major public health problem as its incidence and prevalence rise in line with an aging population in all developed countries. AHF represents a growing medico-economic burden and is associated with high morbidity and mortality [4]. Currently, AHF is the main reason for hospital admissions in patients aged > 65 years and acute cardiogenic pulmonary oedema accounts for approximately 1% of ED visits [3], [4], involving approximately 200,000 patients per year in France (including 5% of the French population aged 75–85 years and 10% of those aged > 85 years) [5]. HF is a progressive pathology linked to aging, with mortality rising by 10% each year [6]. Indeed, the mortality rate remains appalling, reaching up to 12% during the hospital stay, 8–20% in the 2 months following hospitalization for an episode of AHF, and reaching 25–50% in the first 5 years after initial diagnosis. Moreover, mortality is increased in the presence of associated comorbidities such as anaemia, hypercholesterolemia or renal dysfunction, all of which become more frequent with age [3], [4], [6], [7].
Virtual reality simulation and real-life training programs for cataract surgery: a scoping review of the literature
Lea Dormegny, van Charles Lansingh, Anne Lejay, Nabil Chakfe, Rémi Yaici, Arnaud Sauer, David Gaucher, Bonnie An Henderson, Ann Sofia Skou Thomsen, Tristan Bourcier
BMC Medical Education, 2024, 24 (1), pp.1245. ⟨10.1186/s12909-024-06245-w⟩
Article dans une revueAbstractBackground: Cataract surgery requires a high level of dexterity and experience to avoid serious intra-and postoperative complications. Proper surgical training and evaluation during the learning phase are crucial to promote safety in the operating room (OR). This scoping review aims to report cataract surgery training efficacy for patient safety and trainee satisfaction in the OR when using virtual reality simulators (EyeSi [Haag-Streit, Heidelberg, Germany] or HelpMeSee [HelpMeSee foundation, Jersey city, New Jersey, United States]) or supervised surgical training on actual patients programs in residents. Methods: An online article search in the PubMed database was performed to identify studies proposing OR performance assessment after virtual-reality simulation (EyeSi or HelpMeSee) or supervised surgical training on actual patients programs. Outcome assessment was primarily based on patient safety (i.e., intra-and post-operative complications, OR performance, operating time) and secondarily based on trainee satisfaction (i.e., subjective assessment). Results: We reviewed 18 articles, involving 1515 participants. There were 13 using the EyeSi simulator, with 10 studies conducted in high-income countries (59%). One study used the HelpMeSee simulator and was conducted in India. The four remaining studies reported supervised surgical training on actual patients, mostly conducted in low-middleincome countries. Training programs greatly differed between studies and the level of certainty was considered low. Only four studies were randomized clinical trials. There were 17 studies (94%) proposing patient safety assessments, mainly through intraoperative complication reports (67%). Significant safety improvements were found in 80% of comparative virtual reality simulation studies. All three supervised surgery studies were observational and reported a high amount of cataract surgeries performed by trainees. However, intraoperative complication rates appeared to be higher than in virtual reality simulation studies. Trainee satisfaction was rarely assessed (17%) and did not correlate with training outcomes. Conclusions: Patient safety assessment in the OR remains a major concern when evaluating the efficacy of a training program. Virtual reality simulation appears to lead to safer outcomes compared to that of supervised surgical training on actual patients alone, which encourages its use prior to performing real cases. However, actual training programs need to be more consistent, while maintaining a balance between financial, cultural, geographical, and accessibility factors.
SEPSIGN: early identification of sepsis signs in emergency department
Thomas Lafon, Marie-Angélique Cazalis, Kimberly Hart, Cassandra Hennessy, Karim Tazarourte, Wesley Self, Arvin Radfar Akhavan, Saïd Laribi, Damien Viglino, Marion Douplat, Adit Ginde, Sophie Tolou, Simon Mahler, Pierrick Le Borgne, Yann-Erick Claessens, Youri Yordanov, Quentin Le Bastard, Agathe Pancher, Jim Ducharme, Christopher Lindsell, Nathan Shapiro
Internal and Emergency Medicine, 2024, ⟨10.1007/s11739-024-03802-5⟩
Article dans une revueIslet Transplantation: Current Limitations and Challenges for Successful Outcomes
Allan Langlois, Michel Pinget, Laurence Kessler, Karim Bouzakri
Cells, 2024, 13 (21), pp.1783. ⟨10.3390/cells13211783⟩
Article dans une revueAbstractIslet transplantation is a promising approach for treating patients with unstable T1DM. However, it is confronted with numerous obstacles throughout the various stages of the transplantation procedure. Significant progress has been made over the last 25 years in understanding the mechanisms behind the loss of functional islet mass and in developing protective strategies. Nevertheless, at present, two to three pancreases are still needed to treat a single patient, which limits the maximal number of patients who can benefit from islet transplantation. Thus, this publication provides an overview of recent scientific findings on the various issues affecting islet transplantation. Specifically, we will focus on the understanding of the mechanisms involved and the strategies developed to alleviate these problems from the isolation stage to the post-transplantation phase. Finally, we hope that this review will highlight new avenues of action, enabling us to propose pancreatic islet transplantation to a maximum number of patients with T1DM.
Validity evidence of a new virtual reality simulator for phacoemulsification training in cataract surgery
Rémi Yaïci, Jérémie Poirot, Lea Dormegny, Nicole Neumann, Eugénie Bazarya, Lauriana Solecki, Arnaud Sauer, David Gaucher, Anne Lejay, Ann Sofia Thomsen, Nabil Chakfe, Tristan Bourcier
Scientific Reports, 2024, 14 (1), pp.25524. ⟨10.1038/s41598-024-76405-x⟩
Article dans une revueAbstractThis study aims to assess validity evidence of the new phacoemulsification module of the HelpMeSee [HMS] virtual reality simulator. Conducted at the Ophthalmology Department of Strasbourg University Hospital and Gepromed Education Department, Strasbourg, France, this cross-sectional study divided 20 surgeons into two groups based on their experience over or under 300 cataract surgeries. Surgeons filled out a background survey covering their phacoemulsification experience and prior simulator use before undergoing single-session simulations on the EyeSi [EYS] and HMS simulators. Handgrip strength was measured pre- and post-simulation to evaluate grip fatigue. Afterwards, surgeons rated the perceived realism on a seven-point Likert scale. Participants were predominantly right-handed males, with expert surgeons averaging 44 years and intermediate surgeons 29 years of age. Expert surgeons had completed around 2000 phacoemulsification surgeries compared to 150 by intermediates. Primary outcome was to assess the construct validity of HMS simulator based on the difference in total and modules scores between both groups. Significant performance differences were observed between the two groups, with experts scoring higher. HMS scores were 35.8±1.5 out of 46 points for experts and 27.2±2.3 for intermediates (p=0.006). For EYS, scores were 405.2±20.3 out of 500 points for experts and 327.8±25.2 for intermediates (p=0.028). Experts experienced significantly less grip fatigue post-simulation on HMS compared to intermediates. This research evaluates validity evidence of HMS’s phacoemulsification modules for the first time. It emphasizes the potential to broaden simulation-based training by targeting diverse populations.
Autophagy and autophagic cell death in sepsis: friend or foe?
Toshiaki Iba, Julie Helms, Cheryl L Maier, Ricard Ferrer, Jerrold H Levy
Journal of Intensive Care, 2024, 12, ⟨10.1186/s40560-024-00754-y⟩
Article dans une revueAbstractIn sepsis, inflammation, and nutrient deficiencies endanger cellular homeostasis and survival. Autophagy is primarily a mechanism of cellular survival under fasting conditions. However, autophagy-dependent cell death, known as autophagic cell death, is proinflammatory and can exacerbate sepsis. Autophagy also regulates various types of non-inflammatory and inflammatory cell deaths. Non-inflammatory apoptosis tends to suppress inflammation, however, inflammatory necroptosis, pyroptosis, ferroptosis, and autophagic cell death lead to the release of inflammatory cytokines and damage-associated molecular patterns (DAMPs) and amplify inflammation. The selection of cell death mechanisms is complex and often involves a mixture of various styles. Similarly, protective autophagy and lethal autophagy may be triggered simultaneously in cells. How cells balance the regulatory mechanisms of these processes is an area of interest that is still under investigation. Therapies aimed at modulating autophagy are considered promising. Enhancing autophagy helps clear and recycle damaged organelles and reduce the burden of inflammatory processes while inhibiting excessive autophagy, which could prevent autophagic cell death. In this review, we introduce recent advances in research and the complex regulatory system of autophagy in sepsis.
Ventilation strategies in cardiogenic shock: insights from the FRENSHOCK observational registry
Kim Volle, Hamid Merdji, Vincent Bataille, Nicolas Lamblin, François Roubille, Bruno Levy, Sebastien Champion, Pascal Lim, Francis Schneider, Vincent Labbe, Hadi Khachab, Jeremy Bourenne, Marie-France Seronde, Guillaume Schurtz, Brahim Harbaoui, Gerald Vanzetto, Charlotte Quentin, Nicolas Combaret, Benjamin Marchandot, Benoit Lattuca, Caroline Biendel, Guillaume Leurent, Laurent Bonello, Edouard Gerbaud, Etienne Puymirat, Eric Bonnefoy, Nadia Aissaoui, Clément Delmas
Clinical Research in Cardiology, 2024, Online ahead of print. ⟨10.1007/s00392-024-02551-x⟩
Article dans une revueAbstractAbstract Background Despite scarce data, invasive mechanical ventilation (MV) is widely suggested as first-line ventilatory support in cardiogenic shock (CS) patients. We assessed the real-life use of different ventilation strategies in CS and their influence on short and mid-term prognosis. Methods FRENSHOCK was a prospective registry including 772 CS patients from 49 centers in France. Patients were categorized into three groups according to the ventilatory supports during hospitalization: no mechanical ventilation group (NV), non-invasive ventilation alone group (NIV), and invasive mechanical ventilation group (MV). We compared clinical characteristics, management, and occurrence of death and major adverse event (MAE) (death, heart transplantation or ventricular assist device) at 30 days and 1 year between the three groups. Results Seven hundred sixty-eight patients were included in this analysis. Mean age was 66 years and 71% were men. Among them, 359 did not receive any ventilatory support (46.7%), 118 only NIV (15.4%), and 291 MV (37.9%). MV patients presented more severe CS with more skin mottling, higher lactate levels, and higher use of vasoactive drugs and mechanical circulatory support. MV was associated with higher mortality and MAE at 30 days (HR 1.41 [1.05–1.90] and 1.52 [1.16–1.99] vs NV). No difference in mortality (HR 0.79 [0.49–1.26]) or MAE (HR 0.83 [0.54–1.27]) was found between NIV patients and NV patients. Similar results were found at 1-year follow-up. Conclusions Our study suggests that using NIV is safe in selected patients with less profound CS and no other MV indication. NCT02703038 Graphical abstract
Wearable Lung Support Technology: The Brink of a New Era
Anne Olland, Olaf Mercier
Transplantation, 2024, 109 (3), pp.409-410. ⟨10.1097/tp.0000000000005216⟩
Article dans une revueIslet-after-kidney transplantation versus kidney alone in kidney transplant recipients with type 1 diabetes (KAIAK): a population-based target trial emulation in France
Mehdi Maanaoui, Rémi Lenain, Yohann Foucher, Fanny Buron, Gilles Blancho, Corinne Antoine, Sophie Caillard, Laurence Kessler, Moglie Le Quintrec, Orianne Villard, Dany Anglicheau, Matthias Büchler, Albane Brodin-Sartorius, Luc Frimat, Paolo Malvezzi, Sandrine Lablanche, Lionel Badet, Laure Esposito, Mikaël Chetboun, Aghiles Hamroun, Julie Pattou Kerr-Conte, Thierry Berney, Marie-Christine Vantyghem, Marc Hazzan, François Pattou
The Lancet. Diabetes & Endocrinology , 2024, The Lancet. Diabetes & Endocrinology, 12 (10), pp.716-724. ⟨10.1016/S2213-8587(24)00241-9⟩
Article dans une revueAbstractBackground : Islet transplantation has been associated with better metabolic control and quality of life than insulin treatment alone, but direct evidence of its effect on hard clinical endpoints is scarce. We aimed to assess the effect of islet transplantation on patient-graft survival in kidney transplant recipients with type 1 diabetes. Methods : In this retrospective cohort study, we enrolled all patients with type 1 diabetes who received a kidney graft in France during the study period, identified from the CRISTAL nationwide registry. Non-inclusion criteria included recipients from transplant centres that never proposed islet transplantation during the study period, recipients with a functional pancreas throughout the follow-up duration, recipients with more than two kidney transplants, HLA-sensitised recipients, recipients with less than 1 year of follow-up after kidney transplantation, misclassified recipients with type 2 diabetes, recipients aged over 65 years, recipients of kidney grafts from Donation after Circulatory Death donors, recipient with HIV or hepatitis, recipients with cancer, and recipients of combined liver-kidney transplants. Patients who also received islet-after-kidney (IAK) transplantation were compared with controls who received kidney transplantation alone according to a 1:2 matching method based on time-dependent propensity scores, ensuring patients comparability at the time of islet transplantation. The primary outcome was patient-graft survival, a composite outcome defined by death, re-transplantation, or return to dialysis. Findings : Between Jan 1, 2000, and Dec 31, 2017, 2391 patients with type 1 diabetes were identified as having received a kidney transplant, 47 patients of whom also received an islet transplantation. 2002 patients were not eligible for islet transplantation and 62 were excluded due to missing data. 327 eligible recipients from 15 centres were included in the study dataset for the target trial emulation. 40 patients who received IAK transplantation were successfully matched to 80 patients who received kidney transplantation alone. 13 (33%) of 40 patients in the IAK transplantation group returned to dialysis or died, compared with 36 (45%) of 80 patients in the kidney transplantation alone group. We found a significant benefit of islet transplantation compared with kidney transplantation alone on patient-graft survival, with a hazard ratio (HR) of 0·44 (95% CI 0·23–0·88; p=0·022), mainly explained by a protective effect on the risk of death (HR 0·41, 0·13–0·91; p=0·042). There was no meaningful association between IAK and death-censored graft survival (0·73, 0·30–1·89; p=0·36). Interpretation : In kidney transplant recipients with type 1 diabetes, IAK transplantation was associated with a significantly better patient-graft survival compared with kidney transplantation alone, mainly due to a protective effect on the risk of death. These results potentially serve as compelling grounds for advocating wider access to islet transplantation in patients with type 1 diabetes undergoing kidney transplant, as reimbursement of islet transplantation is provided in few countries worldwide.
Hypercalcemia associated with Pneumocystis jirovecii pneumonia in lung transplant recipients: Two case reports
Shadi Saberianfar, Tristan Dégot, Benjamin Renaud-Picard
Transplant Infectious Disease, 2024, 27 (1), ⟨10.1111/tid.14391⟩
Article dans une revueEffect of high-flow nasal cannula oxygen versus standard oxygen on mortality in patients with acute hypoxaemic respiratory failure: protocol for a multicentre, randomised controlled trial (SOHO)
Jean-Pierre Frat, Rémi Coudroy, Jean-Pierre Quenot, Christophe Guitton, Julio Badie, Arnaud Gacouin, Stephan Ehrmann, Alexandre Demoule, Fabien Jarousseau, Guillaume Carteaux, Jean-Philippe Rigaud, Jean Reignier, Nicholas Sedillot, Damien Contou, François Beloncle, Cédric Daubin, Anne-Florence Dureau, Abdelhamid Fatah, Marie-Catherine Besse, Alexis Ferre, Emanuele Turbil, Hamid Merdji, Louis Marie Galerneau, Béatrice Lacombe, Jean-Christophe Richard, Antoine Romen, Agathe Delbove, Gwénaël Prat, Alexandre Lautrette, Gwenhaël Colin, Edouard Soum, Gaël Bourdin, Gonzalo Hernández, Stéphanie Ragot, Arnaud W. Thille
BMJ Open, 2024, 14 (10), pp.e083232. ⟨10.1136/bmjopen-2023-083232⟩
Article dans une revueAbstract<b>Introduction:</b> First-line oxygenation strategy in patients with acute hypoxaemic respiratory failure consists in standard oxygen or high-flow nasal oxygen therapy. Clinical practice guidelines suggest the use of high-flow nasal oxygen rather than standard oxygen. However, findings remain contradictory with a low level of certainty. We hypothesise that compared with standard oxygen, high-flow nasal oxygen may reduce mortality in patients with acute hypoxaemic respiratory failure. <b>Method and analysis:</b> The Standard Oxygen versus High-flow nasal Oxygen-trial is an investigator-initiated, multicentre, open-label, randomised controlled trial comparing high-flow nasal oxygen versus standard oxygen in patients admitted to an intensive care unit (ICU) for acute respiratory failure with moderate-to-severe hypoxaemia. 1110 patients will be randomly assigned to one of the two groups with a ratio of 1:1. The primary outcome is the number of patients who died 28 days after randomisation. Secondary outcomes include comfort, dyspnoea and oxygenation 1 hour after treatment initiation, the number of patients intubated at day 28, mortality in ICU, in hospital and until day 90, and complications during ICU stay. <b>Ethics and dissemination:</b>The study has been approved by the central Ethics Committee 'Sud Méditerranée III' (2020-07-05) and patients will be included after informed consent. The results will be submitted for publication in peer-reviewed journals. <b>Trial registration:</b> number NCT04468126.
Potential of injectable psoralen polymeric lipid nanoparticles for cancer therapeutics
Fengjie Liu, Yuanyuan Huang, Xiujuan Lin, Qianwen Li, Idoia Gallego, Guoqiang Hua, Nadia Benkirane-Jessel, José Luis Pedraz, Panpan Wang, Murugan Ramalingam, Yu Cai
Arabian Journal of Chemistry, 2024, 17 (10), pp.105947. ⟨10.1016/j.arabjc.2024.105947⟩
Article dans une revueAbstractTriple-negative breast cancer (TNBC) is the most malignant subtype of breast cancer (BC) with a poor prognosis. Currently, chemotherapy and neoadjuvant chemotherapy continue to have limited efficacy in TNBC. With the deepening of research, nano targeted therapy shows a good application prospect in TNBC. Psoralen (PSO), an active component of Psoralea corylifolia, has significant advantages in inhibiting the growth of TNBC, but its poor solubility hampers its clinical practice. In this study, injectable psoralen polymer lipid nanoparticles (PSOPLNs) were developed to deliver the hydrophobic drug to the target site and improve bioavailability. These nanoparticles were fully characterized in terms of morphology, particle size, surface zeta potential, encapsulation efficiency, drug loading, stability, and in vitro release profile. Besides, structural characteristics were determined by ultraviolet (UV) and infrared spectroscopy. Finally, in vivo pharmacokinetic studies of PSO-PLNs were performed in rats. The characteristic absorption of PSO and PSO-PLNs appeared in UV, indicating that PSO-PLNs had encapsulated PSO; there was no obvious characteristic absorption of PSO in infrared spectra, indicating that PSO was mostly encapsulated in the nano-shell. PSO-PLNs could maintain stable physicochemical properties for 1.5 months when stored at 4 ◦C. PSO-PLNs selectively released PSO at pH 6.5, and the sustained and controlled release effect was significantly different from that of PSO (p < 0.01). Pharmacokinetic studies in vivo demonstrated that PSO-PLNs could improve PSO bioavailability by increasing blood drug concentration and plasma protein binding rate. In summary, injectable PSO-PLNs could be considered as promising delivery system for advanced cancer therapeutics.
2023 SFMU/GICC-SFC/SFGG expert recommendations for the emergency management of older patients with acute heart failure. Part 2: Therapeutics, pathway of care and ethics
Nicolas Peschanski, Florian Zores, Jacques Boddaert, Bénedicte Douay, Clément Delmas, Amaury Broussier, Delphine Douillet, Emmanuelle Berthelot, Thomas Gilbert, Cédric Gil-Jardiné, Vincent Auffret, Laure Joly, Jérémy Guénézan, Michel Galinier, Marion Pépin, Pierrick Le Borgne, Philippe Le Conte, Nicolas Girerd, Frédéric Roca, Mathieu Oberlin, Patrick Jourdain, Geoffroy Rousseau, Nicolas Lamblin, Barbara Villoing, Frédéric Mouquet, Xavier Dubucs, François Roubille, Maxime Jonchier, Rémi Sabatier, Saïd Laribi, Muriel Salvat, Tahar Chouihed, Jean-Baptiste Bouillon-Minois, Anthony Chauvin
Archives of cardiovascular diseases, 2024, 118 (1), pp.6-16. ⟨10.1016/j.acvd.2024.09.004⟩
Article dans une revueAesthetical and Functional Rehabilitation for an Ankylosed Maxillary Canine—A Case Report
Tatiana Roman, Maxime Delarue, Matthieu Esquenet, Frédéric Rafflenbeul, Catherine Petit, Naji Kharouf, Olivier Etienne
Clinics and Practice, 2024, 14 (5), pp.2013 - 2026. ⟨10.3390/clinpract14050159⟩
Article dans une revueAbstract<div><p>Background: As the functional and aesthetical importance of the canine cannot be overstated, the management of a missing canine is challenging. This case report describes the treatment of an infra-occluded ankylosed maxillary canine in a patient with previously failed orthodontic treatment. Case description: A 20-year-old patient sought a second opinion for orthodontic treatment failure. The patient presented with an impacted, ankylosed, and severely infra-occluded right maxillary canine, as well as an iatrogenic clockwise cant of the maxillary occlusal plane and several root resorptions. The treatment corrected the cant of the occlusal plane while avoiding further root resorption, partially extracted the upper right canine, improved the quality and quantity of the soft tissue in the newly edentulous area, and provided a prosthetic rehabilitation using a lithium disilicate ceramic resin-bonded cantilever bridge. Conclusions: The use of a cantilevered bridge resulted in an aesthetically pleasing and minimally invasive rehabilitation. This technique is reversible, does not affect pulp vitality, and is a viable solution for rehabilitating the smiles of young patients. Clinical significance:</p><p>The smile rehabilitation for an ankylosed maxillary canine, especially in the case of a previously failed orthodontic treatment, is an important clinical challenge. A minimally invasive long-term restoration with a cantilever bridge is a viable solution. Functional and aesthetically pleasant results can be achieved with a multidisciplinary approach.</p></div>
NADPH oxidases in healthy white adipose tissue and in obesity: function, regulation, and clinical implications
François R Jornayvaz, Karim Gariani, Emmanuel Somm, Vincent Jaquet, Karim Bouzakri, Ildiko Szanto
Obesity, 2024, 32 (10), pp.1799 - 1811. ⟨10.1002/oby.24113⟩
Article dans une revueAbstract<div><p>Reactive oxygen species, when produced in a controlled manner, are physiological modulators of healthy white adipose tissue (WAT) expansion and metabolic function.</p><p>By contrast, unbridled production of oxidants is associated with pathological WAT expansion and the establishment of metabolic dysfunctions, most notably insulin resistance and type 2 diabetes mellitus. NADPH oxidases (NOXs) produce oxidants in an orderly fashion and are present in adipocytes and in other diverse WATconstituent cell types. Recent studies have established several links between aberrant NOX-derived oxidant production, adiposity, and metabolic homeostasis. The objective of this review is to highlight the physiological roles attributed to diverse NOX isoforms in healthy WAT and summarize current knowledge of the metabolic consequences related to perturbations in their adequate oxidant production. We detail WAT-related alterations in preclinical investigations conducted in NOXdeficient murine models. In addition, we review clinical studies that have employed NOX inhibitors and currently available data related to human NOX mutations in metabolic disturbances. Future investigations aimed at understanding the integration of NOX-derived oxidants in the regulation of the WAT cellular redox network are essential for designing successful redox-related precision therapies to curb obesity and attenuate obesity-associated metabolic pathologies.</p></div>
Sepsis-induced coagulopathy (SIC) in the management of sepsis
Toshiaki Iba, Julie Helms, Jerrold H Levy
Annals of Intensive Care, 2024, 14 (1), pp.148. ⟨10.1186/s13613-024-01380-5⟩
Article dans une revueAbstractThe mortality rate of sepsis remains high and further increases when complicated by disseminated intravascular coagulation (DIC). Consequently, early detection and appropriate management of DIC will be helpful for the management of sepsis. Although overt DIC criteria are often used for diagnosing definitive DIC, it was not designed to detect early-phase DIC. The criteria and scoring system for sepsis-induced coagulopathy (SIC) were developed and introduced in 2017 to detect early-stage DIC, and they were subsequently adopted by the International Society on Thrombosis and Haemostasis in 2019. The objective of detecting SIC was not to miss the patients at high risk of developing overt DIC at an earlier time. Although anticoagulant therapies are potential options for the treatment of sepsis-associated DIC, their effectiveness has not been established, and further research is warranted. For that purpose, an international collaborative platform is required for future clinical trials, and SIC criteria have been suggested for such studies. Calculating the SIC score is straightforward and suitable for use in clinical settings. This review aims to introduce SIC criteria and its scoring system for better management of sepsis-associated DIC. We also intended to update the current knowledge regarding this novel diagnostic criterion.
Potential of dapagliflozin to prevent vascular remodeling in the rat carotid artery following balloon injury
Kensuke Matsushita, Chisato Sato, Christophe Bruckert, Dal-Seong Gong, Said Amissi, Sandy Hmadeh, Walaa Fakih, Lamia Remila, Jean-Marc Lessinger, Cyril Auger, Laurence Jesel, Patrick Ohlmann, Gilles Kauffenstein, Valerie Schini-Kerth, Olivier Morel
Atherosclerosis, 2024, pp.117595. ⟨10.1016/j.atherosclerosis.2024.117595⟩
Article dans une revue604. REAL-WORLD MANAGEMENT AND OUTCOMES OF PATIENTS WITH NON METASTATIC ESOPHAGEAL SQUAMOUS CELL CARCINOMA IN THE FREGAT DATABASE
Julie Veziant, Emeline Cailliau, Julien Labreuche, Damien Bergeat, Caroline Gronnier, Xavier Benoit d'Journo, Nicolas Regenet, Olivier Glehen, Jean Marc Gornet, Frederic Di Fiore, Jean Marc Regimbeau, Brice Paquette, Muriel Mathonnet, Cecile Brigand, Jean Michel Fabre, Thibault Voron, Olivier Bouche, Antoine Drouillard, Xavier Lenne, Stephanie Devaux, Clarisse Eveno, Guillaume Piessen
Diseases of the Esophagus, 2024, 37 (Supplement_1), pp.113. ⟨10.1093/dote/doae057.315⟩
Article dans une revueAbstractBackground International guidelines for locally advanced esophageal squamous cell carcinoma (ESCC) recommend both neoadjuvant chemoradiotherapy (nCRT) followed by planned surgery (P-surg) or definitive chemoradiotherapy (dCRT) with salvage surgery (S-surg). However, the optimal treatment remains unknown, and the ongoing pragmatic NEEDS randomized trial is assessing the efficacy of an organ-preserving strategy after dCRT (Nilsson, Front Oncol 2022). Real-world data on the management of non-metastatic ESCC is limited. This study aims to describe the treatment strategies and prognosis of patients with non-metastatic ESCC in a real-world setting. Methods We conducted a retrospective cohort study of patient treated for non-metastatic ESCC between 2014 and 2022. Data were extracted from the FREGAT database. For the entire population, different treatment strategies were described. We compared patients who received nCRT with those who received dCRT under real-life conditions (“Real-life” population) and according to the NEEDS randomized trial criteria (“NEEDS-like” population). Five-year overall survival (OS) and relapse-free survival (RFS) were compared between nCRT and dCRT patients using a Cox proportional hazard model adjusting for major confounders. In operated patients, the impact of surgery on OS and RFS was assessed using a time-dependent Cox proportional hazard model. Postoperative outcomes were compared between P-surg and S-surg using Fisher’s exact test. Results From 971 patients diagnosed with non-metastatic ESCC, 867 (89.3%) received a curative treatment including dCRT (41.0%), nCRT (28.0%), primary esophagectomy (9.8%), neoadjuvant chemotherapy (3.4%), or endoscopic resection (1.0%). Fifty-nine patients (6,1%) received supportive care or chemotherapy alone. Forty-five patients (4.6%) died during or before treatment. In the “real-life” population (n=659), 269 patients received nCRT and 390 patients received dCRT. A total of 229 patients (93.5%) in nCRT group underwent P-surg and S-surg was performed in 44 patients (11.3%) in dCRT group. After adjustment, dCRT was associated with a significantly poorer 5-year OS and RFS (respectively HR=1.83, 95%CI 1.44-2.33; HR=1.98, 95%CI 1.57-2.49). A complete clinical response (cCR) was observed in 21.6% and 29.5% of the nCRT and dCRT groups, respectively. Among cCR undergoing resection, 35.8% had residual disease on pathological specimen. Time between CRT and surgery was 58 days (IQR44-72) vs. 109 days (IQR71-278) for P-surge and S-Surg respectively. The 90-day mortality, major morbidity (Clavien-Dindo III/IV) and pulmonary complication rates were similar in both groups, except for a higher risk of anastomotic leakage after S-surg (p=0.05). In the “NEEDS-like” population (n=598), findings were consistent and comparable to those observed in the “real-life” population. Conclusion Among non-mestastatic ESCC included in the FREGAT database, 10.6% had a non-curative approach or died prematurely. Most patients underwent dCRT, with S-surg rate of only 11.3%. Neoadjuvant CRT followed by P-surg was associated with the best outcome in terms of OS and RFS in both “rela life” and “Needs-like” populations. In operated patients, postoperative outcomes were similar after nCRT and dCRT, except for a higher incidence of anastomotic leakage after S-surg. This study highlighted the therapeutic strategies used and their results in real-life conditions for non-metastatic ESCC inside the FREGAT database. The treatment option of nCRT followed by P-surg appears to remain the optimal curative treatment regimen.
Loss of prohibitin 2 in Schwann cells dysregulates key transcription factors controlling developmental myelination
Emma R. Wilson, Gustavo Della‐flora Nunes, Shichen Shen, Seth Moore, Joseph Gawron, Jessica Maxwell, Umair Syed, Edward Hurley, Meghana Lanka, Jun Qu, Laurent Désaubry, Lawrence Wrabetz, Yannick Poitelon, Laura Feltri
Glia, 2024, ⟨10.1002/glia.24610⟩
Article dans une revueCirculating cell-free and extracellular vesicles-derived microRNA as prognostic biomarkers in patients with early-stage NSCLC: results from RESTING study
Elisabetta Petracci, Luigi Pasini, Milena Urbini, Enriqueta Felip, Franco Stella, Fabio Davoli, Maurizio Salvi, Michèle Beau-Faller, Michela Tebaldi, Irene Azzali, Matteo Canale, Piergiorgio Solli, Giulia Lai, Ramon Amat, Caterina Carbonell, Pierre-Emmanuel Falcoz, Alex Martinez-Marti, Erwan Pencreach, Angelo Delmonte, Lucio Crinò, Paola Ulivi
Journal of experimental & clinical cancer research, 2024, 43 (1), pp.241. ⟨10.1186/s13046-024-03156-y⟩
Article dans une revueAbstractBackground: Factors to accurately stratify patients with early-stage non-small cell lung cancer (NSCLC) in different prognostic groups are still needed. This study aims to investigate 1) the prognostic potential of circulating cell-free (CF) and extracellular vesicles (EVs)-derived microRNA (miRNAs), and 2) their added value with respect to known prognostic factors (PFs). Methods: The RESTING study is a multicentre prospective observational cohort study on resected stage IA-IIIA patients with NSCLC. The primary end-point was disease-free survival (DFS), and the main analyses were carried out separately for CF-and EV-miRNAs. CF-and EV-miRNAs were isolated from plasma, and miRNA-specific libraries were prepared and sequenced. To reach the study aims, three statistical models were specified: one using the miRNA data only (Model 1); one using both miRNAs and known PFs (age, gender, and pathological stage) (Model 2), and one using the PFs alone (Model 3). Five-fold cross-validation (CV) was used to assess the predictive performance of each. Standard Cox regression and elastic net regularized Cox regression were used. Results: A total of 222 patients were enrolled. The median follow-up time was 26.3 (95% CI 25.4-27.6) months. From Model 1, three CF-miRNAs and 21 EV-miRNAs were associated with DFS. In Model 2, two CF-miRNAs (miR-29c-3p and miR-877-3p) and five EV-miRNAs (miR-181a-2-3p, miR-182-5p, miR-192-5p, miR-532-3p and miR-589-5p) remained associated with DFS. From pathway enrichment analysis, TGF-beta and NOTCH were the most involved pathways. Conclusion: This study identified promising prognostic CF-and EV-miRNAs that could be used as a non-invasive, cost-effective tool to aid clinical decision-making. However, further evaluation of the obtained miRNAs in an external cohort of patients is warranted.
Heterogeneity of glycaemic phenotypes in type 1 diabetes
Guy Fagherazzi, Gloria A Aguayo, Lu Zhang, Hélène Hanaire, Sylvie Picard, Laura Sablone, Bruno Vergès, Naïma Hamamouche, Bruno Detournay, Michael Joubert, Brigitte Delemer, Isabelle Guilhem, Anne Vambergue, Pierre Gourdy, Samy Hadjadj, Fritz-Line Velayoudom, Bruno Guerci, Etienne Larger, Nathalie Jeandidier, Jean-François Gautier, Eric Renard, Louis Potier, Pierre-Yves Benhamou, Agnès Sola, Lyse Bordier, Elise Bismuth, Gaëtan Prévost, Laurence Kessler, Emmanuel Cosson, Jean-Pierre Riveline
Diabetologia, 2024, 67 (8), pp.1567-1581. ⟨10.1007/s00125-024-06179-4⟩
Article dans une revueAbstractAims/hypothesis: Our study aims to uncover glycaemic phenotype heterogeneity in type 1 diabetes. Methods: In the Study of the French-speaking Society of Type 1 Diabetes (SFDT1), we characterised glycaemic heterogeneity thanks to a set of complementary metrics: HbA1c, time in range (TIR), time below range (TBR), CV, Gold score and glycaemia risk index (GRI). Applying the Discriminative Dimensionality Reduction with Trees (DDRTree) algorithm, we created a phenotypic tree, i.e. a 2D visual mapping. We also carried out a clustering analysis for comparison. Results: We included 618 participants with type 1 diabetes (52.9% men, mean age 40.6 years [SD 14.1]). Our phenotypic tree identified seven glycaemic phenotypes. The 2D phenotypic tree comprised a main branch in the proximal region and glycaemic phenotypes in the distal areas. Dimension 1, the horizontal dimension, was positively associated with GRI (coefficient [95% CI]) (0.54 [0.52, 0.57]), HbA1c (0.39 [0.35, 0.42]), CV (0.24 [0.19, 0.28]) and TBR (0.11 [0.06, 0.15]), and negatively with TIR (-0.52 [-0.54, -0.49]). The vertical dimension was positively associated with TBR (0.41 [0.38, 0.44]), CV (0.40 [0.37, 0.43]), TIR (0.16 [0.12, 0.20]), Gold score (0.10 [0.06, 0.15]) and GRI (0.06 [0.02, 0.11]), and negatively with HbA1c (-0.21 [-0.25, -0.17]). Notably, socioeconomic factors, cardiovascular risk indicators, retinopathy and treatment strategy were significant determinants of glycaemic phenotype diversity. The phenotypic tree enabled more granularity than traditional clustering in revealing clinically relevant subgroups of people with type 1 diabetes. Conclusions/interpretation: Our study advances the current understanding of the complex glycaemic profile in people with type 1 diabetes and suggests that strategies based on isolated glycaemic metrics might not capture the complexity of the glycaemic phenotypes in real life. Relying on these phenotypes could improve patient stratification in type 1 diabetes care and personalise disease management.
Cardiogenic shock and infection: A lethal combination
Miloud Cherbi, Hamid Merdji, Vincent Labbé, Eric Bonnefoy, Nicolas Lamblin, François Roubille, Bruno Levy, Pascal Lim, Hadi Khachab, Guillaume Schurtz, Brahim Harbaoui, Gerald Vanzetto, Nicolas Combaret, Benjamin Marchandot, Benoît Lattuca, Caroline Biendel-Picquet, Guillaume Leurent, Edouard Gerbaud, Etienne Puymirat, Laurent Bonello, Clément Delmas
Archives of cardiovascular diseases, 2024, 117 (8-9), pp.470-479. ⟨10.1016/j.acvd.2024.04.005⟩
Article dans une revueAbstractBackground: Cardiogenic shock and sepsis are severe haemodynamic states that are frequently present concomitantly, leading to substantial mortality. Despite its frequency and clinical significance, there is a striking lack of literature on the outcomes of combined sepsis and cardiogenic shock. Methods: FRENSHOCK was a prospective registry including 772 patients with cardiogenic shock from 49 centres. The primary endpoint was 1-month all-cause mortality. Secondary endpoints included heart transplantation, ventricular assistance device and all-cause death rate at 1 year. Results: Among the 772 patients with cardiogenic shock included, 92 cases were triggered by sepsis (11.9%), displaying more frequent renal and hepatic acute injuries, with lower mean arterial pressure. Patients in the sepsis group required broader use of dobutamine (90.1% vs 81.2%; P = 0.16), norepinephrine (72.5% vs 50.8%; P < 0.01), renal replacement therapy (29.7% vs 14%; P < 0.01), non-invasive ventilation (36.3% vs 24.4%; P = 0.09) and invasive ventilation (52.7% vs 35.9%; P = 0.02). Sepsis-triggered cardiogenic shock resulted in higher 1-month (41.3% vs 24.0%; adjusted hazard ratio 1.94, 95% confidence interval 1.36–2.76; P < 0.01) and 1-year (62.0% vs 42.9%; adjusted hazard ratio 1.75, 95% confidence interval 1.32–2.33; P < 0.01) all-cause death rates. No significant difference was found at 1 year for heart transplantation or ventricular assistance device (8.7% vs 10.3%; adjusted odds ratio 0.72, 95% confidence interval 0.32–1.64; P = 0.43). In patients with sepsis-triggered cardiogenic shock, neither the presence of a pre-existing cardiomyopathy nor the co-occurrence of other cardiogenic shock triggers had any additional impact on death. Conclusions: The association between sepsis and cardiogenic shock represents a common high-risk scenario, leading to higher short- and long-term death rates, regardless of the association with other cardiogenic shock triggers or the presence of pre-existing cardiomyopathy.
L’hydronéphrose physiologique : une cause sous-estimée de douleur abdominale au cours de la grossesse
S. Lazert, P. Kauffmann, P. Le Borgne
Annales françaises de médecine d'urgence, 2024, 14 (4), pp.268-270. ⟨10.1684/afmu.2024.0599⟩
Article dans une revueRed-Emitting Pyrrolyl Squaraine Molecular Rotor Reports Variations of Plasma Membrane and Vesicular Viscosity in Fluorescence Lifetime Imaging
Sonia Pfister, Julie Lesieur, Pierre Bourdoncle, Mohamed Elhassan, Pascal Didier, Nicolas Anton, Halina Anton, Mayeul Collot
Analytical Chemistry, 2024, 96 (31), pp.12784-12793. ⟨10.1021/acs.analchem.4c02145⟩
Article dans une revueHuman Aortic Stenotic Valve-Derived Extracellular Vesicles Induce Endothelial Dysfunction and Thrombogenicity Through AT1R/NADPH Oxidases/SGLT2 Pro-Oxidant Pathway
Sandy Hmadeh, Antonin Trimaille, Kensuke Matsushita, Benjamin Marchandot, Adrien Carmona, Fatiha Zobairi, Chisato Sato, Michel Kindo, Tam Minh Hoang, Florence Toti, Kazem Zibara, Eva Hamade, Valérie Schini-Kerth, Gilles Kauffenstein, Olivier Morel
JACC : Basic to Translational Science, 2024, 9 (7), pp.845-864. ⟨10.1016/j.jacbts.2024.02.012⟩
Article dans une revueAbstract<div>HIGHLIGHTS<p>Subclinical leaflet thrombosis was recently linked to higher rates of stroke and transient ischemic attack after TAVR. EVs have emerged as a surrogate marker of endothelial dysfunction and cardiovascular risk. This study demonstrates the role of EVs trapped within the native aortic valve in valvular dysfunction and thrombogenicity, and points at the contribution of the local angiotensin system/NADPH oxidases/SGLT2 pro-oxidant pathway.</p></div>
Diagnostic performance of coronary calcifications on CT to rule out acute coronary syndrome in the emergency department
Julie Paget Sentagne, Mickaël Ohana, François Séverac, Pierrick Le Borgne, Erik-André Sauleau, Pascal Bilbault, Sabrina Kepka
BMC Emergency Medicine, 2024, 24 (1), pp.116. ⟨10.1186/s12873-024-01038-2⟩
Article dans une revueAbstractBackground: At present, the diagnosis of acute coronary syndrome (ACS) can be made by emergency physicians using the usual complementary tests, since the current troponin and electrocardiogram (ECG) protocols have been extensively tested for their safety. However, the detection of coronary calcifications on CT associated with coronary obstruction may be of interest for the diagnostic strategy in the emergency department (ED). The aim of this study was to evaluate a strategy combining a non-ischemic ECG with an initial normal troponin assay and the diagnostic accuracy of chest CT in detecting coronary calcifications to rule out the presence of an acute coronary event in patients presenting with chest pain in the ED. Methods: This was a retrospective, single-center study carried out in an ED in France and included all patients over 18 years of age presenting with chest pain between 1 June 2021 and 31 December 2021 with a non-ischemic ECG and a negative first troponin assay. The primary endpoint was the diagnostic performance of the combing strategy in ruling out ACS. The secondary endpoints were the sensitivity and specificity of calcifications in acute coronary syndrome, comparison with the diagnostic performance of a second troponin assay and the rate of reconsultation, rehospitalisation and investigations within 2 months of the ED. Results: Of the 280 patients included, 141 didn't have calcifications. A total of 14 events were found with a negative predictive value for the combining strategy of 99.8% [95%CI: 98.2 -100]. Sensitivity and specificity were 98.4% [95%CI: 83.8 -100] and 53% [95%CI: 47 -58.9], respectively. Among patients with no calcification, 8.2% were admitted to hospital and none suffered an acute coronary event. A total of 36 patients (12.8%) consulted a doctor within 2 months, with 23 investigations, all of which were negative in the non-calcification group. Conclusions: A strategy combining the detection of coronary calcifications on chest CT in patients with a nonischemic ECG and a single troponin assay is effective to rule out ACS in the ED, and may perform better then ECG and troponin alone.
A vitamin D‐based strategy overcomes chemoresistance in prostate cancer
Kateryna Len‐tayon, Claire Beraud, Clara Fauveau, Anna Y Belorusova, Yassmine Chebaro, Antonio Mouriño, Thierry Massfelder, Anne Chauchereau, Daniel Metzger, Natacha Rochel, Gilles Laverny
British Journal of Pharmacology, 2024, Online ahead of print. ⟨10.1111/bph.16492⟩
Article dans une revueAbstractBackground and purpose Castration‐resistant prostate cancer (CRPC) is a common male malignancy that requires new therapeutic strategies due to acquired resistance to its first‐line treatment, docetaxel. The benefits of vitamin D on prostate cancer (PCa) progression have been previously reported. This study aimed to investigate the effects of vitamin D on chemoresistance in CRPC. Experimental approach Structure function relationships of potent vitamin D analogues were determined. The combination of the most potent analogue and docetaxel was explored in chemoresistant primary PCa spheroids and in a xenograft mouse model derived from a patient with a chemoresistant CRPC. Key results Here, we show that Xe4MeCF3 is more potent than the natural ligand to induce vitamin D receptor (VDR) transcriptional activities and that it has a larger therapeutic window. Moreover, we demonstrate that VDR agonists restore docetaxel sensitivity in PCa spheroids. Importantly, Xe4MeCF3 reduces tumour growth in a chemoresistant CRPC patient‐derived xenograft. In addition, this treatment targets signalling pathways associated with cancer progression in the remaining cells. Conclusion and implications Taken together, these results unravel the potency of VDR agonists to overcome chemoresistance in CRPC and open new avenues for the clinical management of PCa.
Left atrial remodeling and voltage-guided ablation outcome in persistent atrial fibrillation patients according to CHA2DS2-VASc score
Halim Marzak, Gabrielle Gennesseaux, Justine Hammann, Romain Ringele, Simon Fitouchi, François Severac, Thomas Cardi, Mohamad Kanso, Alexandre Schatz, Patrick Ohlmann, Olivier Morel, Laurence Jesel
BMC Cardiovascular Disorders, 2024, 24 (1), pp.347. ⟨10.1186/s12872-024-04009-4⟩
Article dans une revueAbstract<div><p>Background CHA 2 DS 2 -VASc score-related differences have been reported in atrial fibrotic remodeling and prognosis of atrial fibrillation (AF) patients after ablation. There are currently no data on the efficacy of low voltage zone (LVZ)guided ablation in persistent AF patients according to CHA 2 DS 2 -VASc score. We assessed in a cohort of persistent AF patients the extent of LVZ, the regional distribution of LA voltage and the outcome of LA voltage-guided substrate ablation in addition to PVI according to CHA 2 DS 2 -VASc score.</p><p>Methods 138 consecutive persistent AF patients undergoing a first voltage-guided catheter ablation were enrolled. 58 patients with CHAD 2 DS 2 -VASc score ≥ 3 and 80 patients with CHAD 2 DS 2 -VASc score ≤ 2 were included. LA voltage maps were obtained using 3D-electroanatomical mapping system in sinus rhythm. LVZ was defined as < 0.5 mV.</p></div> <div>Results<p>In the high CHAD 2 DS 2 -VASc score group, LA voltage was lower (1.5 [1.1-2.5] vs. 2.3 [1.5-2.8] mV, p = 0.02) and LVZs were more frequently identified (40% vs. 18%), p < 0.01). Female with CHA 2 DS 2 -VASc score ≥ 3 (p = 0.031), LA indexed volume (p = 0.009) and P-wave duration ≥ 150 ms (p = 0.001) were predictors of LVZ. After a 36-month follow-up, atrial arrhythmia-free survival was similar between the two groups (logrank test, P = 0.676).</p><p>Conclusions AF patients with CHAD 2 DS 2 -VASc score ≥ 3 display more LA substrate remodeling with lower voltage and more LVZs compared with those with CHAD 2 DS 2 -VASc score ≤ 2. Despite this atrial remodeling, they had similar and favorable 36 months results after one single procedure. Unlike male with CHAD 2 DS 2 -VASc score ≥ 3, female with CHAD 2 DS 2 -VASc score ≥ 3 was predictor of LVZ occurrence.</p></div>
Towards chitosan-amorphous calcium phosphate nanocomposite: Co-precipitation induced by spray drying
Sylvain Le Grill, Yannick Coppel, Jérémy Soulié, Ghislaine Bertrand, Christian Rey, Fabien Brouillet
Next Materials, 2024, 4, pp.100095. ⟨10.1016/J.NXMATE.2023.100095⟩
Article dans une revueAbstractThis article reports the successful one-step synthesis of two micron-sized composite powders consisting of chitosan and amorphous calcium phosphate. These composite materials are prepared by spray drying of a solution containing chitosan and calcium phosphate precursors. The co-precipitation of chitosan and calcium phosphate precursors during the process induces a highly homogeneous distribution of the phases. The mineral phase identified as spherical nanoparticles dispersed in chitosan showed no chemical bonding with the polymer. As demonstrated by electron microscopy, small angle X-ray scattering and spectroscopies, variation in chitosan concentrations significantly influences the size and spatial distribution of the mineral phase. These results present a promising approach for the preparation of chitosan/amorphous calcium phosphate composite powders with controlled and tunable properties with potential applications in the field of biomaterial engineering such as bone substitutes.
Real-world outcomes of lobectomy, segmentectomy and wedge resection for the treatment of stage c-IA lung carcinoma
Pascal Alexandre Thomas, Agathe Seguin-Givelet, Pierre-Benoît Pages, Marco Alifano, Laurent Brouchet, Pierre-Emmanuel Falcoz, Jean-Marc Baste, Matthieu Glorion, Yaniss Belaroussi, Marc Filaire, Maxime Heyndrickx, Anderson Loundou, Alex Fourdrain, Marcel Dahan, Laurent Boyer, Agate Seguin-Givelet, Ahed Fallouh, Albéric de Lambert, Ana Claudia Vlas, Antoine Claret, Antoine Defontaine, Antoine Legras, Antonio Minniti, Arnaud Pforr, Aurelien Moret, Axel Aubert, Bastien Orsini, Benoît Delepine, Benoît Lahon, Bertrand Richard de Latour, Bogdan Berbescu, Boriana Pektova-Marteau, Catalin Cosma, Cedric Perrotin, Christophe Berton, Christophe Jayle, Christophe Klein, Christophe Lancelin, Dan Angelescu, David Kaczmarek, Edouard Sage, Emmanuel Martinod, Eric Brechet, Eric de la Roche, Eric Mensier, Florence de Dominicis, Florence Mazeres, Florent Charot, Francoise Le Pimpec-Barthes, Gaetan Singier, Gilles Cardot, Gilles Grosdidier, Guillaume Boddaert, Ilies Bouabdallah, Jacques Jougon, Jalal Assouad, Jean François Levi, Jean Marc Baste, Jean Michel Maury, Jean Philippe Arigon, Jean-Noel Choplain, Jean-Philippe Avaro, Jean-Philippe Berthet, Jean-Philippe Le Rochais, Jocelyn Bellier, Joel Riviere, Karel Pfeuty, Laurence Solovei, Laurent Brouchet, Lotfi Benhamed, Lucia Mazzoni, Luciano Eraldi, Lucile Gust, Madalina Grigoroiu, Maher Dabboussi, Marc Filaire, Marco Alifano, Marion Durand, Mathieu Coblence, Matthieu Peret, Mayeul Tabutin, Michel Alauzen, Myriam Ammi, Nicola Santelmo, Nicolas Venissac, Nidal Alsit, Olaf Mercier, Olivier Aze, Olivier Hagry, Olivier Pagès, Olivier Tiffet, Pascal Thomas, Patrick Bagan, Philippe Boitet, Philippe Dalous, Philippe Kleinmann, Philippe Lacoste, Philippe Rinieri, Pierre Mordant, Pierre Tesson, Pierre-Benoît Pages, Pierre-Emmanuel Falcoz, Pierre-Mathieu Bonnet, Pierre-Yves Brichon, Salam Abou Taam, Sebastien Franco, Sophie Guinard, Sophie Jaillard-Thery, Stéphane Renaud, Valentine Anne, Vincent Blin, Vincent Casanova, Xavier de Kerangal
European Journal of Cardio-Thoracic Surgery, 2024, 66 (1), ⟨10.1093/ejcts/ezae251⟩
Article dans une revueAbstractAbstract OBJECTIVES To determine safety and survival outcomes associated with lobectomy, segmentectomy and wedge resection for early-stage lung cancer by quiring the French population-based registry EPIdemiology in THORacic surgery (EPITHOR). METHODS Retrospective analysis of 19 452 patients with stage c IA lung carcinoma who underwent lobectomy, segmentectomy or wedge resection between 2016 and 2022 with curative-intent. Main outcome measures were 90-day mortality and 5-year overall survival estimates. Proportional hazards regression and propensity score matching were used to adjust outcomes for key patient, tumour and practice environment factors. RESULTS The treatment distribution was 72.2% for lobectomy, 21.5% for segmentectomy and 6.3% for wedge. Unadjusted 90-day mortality rates were 1.6%, 1.2% and 1.1%, respectively (P = 0.10). Unadjusted 5-year overall survival estimates were 80%, 78% and 70%, with significant inter-group survival curves differences (P < 0.0001). Multivariable proportional hazards regression showed that wedge was associated with worse overall survival [adjusted hazard ratio (AHR), 1.23 (95% confidence interval 1.03–1.47); P = 0.021] compared with lobectomy, while no significant difference was disclosed when comparing segmentectomy to lobectomy (1.08 [0.97–1.20]; P = 0.162). The three-way propensity score analyses confirmed similar 90-day mortality rate for wedge resection and segmentectomy compared with lobectomy (hazard ratio: 0.43; 95% confidence interval 0.16–1.11; P = 0.081 and 0.99; 0.48–2.10; P = 0.998, respectively), but poorer overall survival (1.45; 1.13–1.86; P = 0.003 and 1.31; 1–1.71; P = 0.048, respectively). CONCLUSIONS Wedge resection was associated with comparable 90-day mortality but lower overall survival when compared to lobectomy. Overall, all types of sublobar resections may not offer equivalent oncologic effectiveness in real-world settings.
Synergistic utilization of cost-effective glycerophosphate and biologically active zein for innovative minimally invasive smart thermo-responsive hydrogels for potential hard tissue engineering applications
Moiz U Din Khan, Aqsa Afzaal, Shahnaz S, Mazhar Amjad Gilani, Shagufta Perveen, Faiza Sharif, Anila Asif, Abrar Faisal, Muhammad Shahid Nazir, Olivier Huck
Smart Materials and Structures, 2024, 33 (8), pp.085007
Article dans une revueAbstractSkeletal defects are the second-leading cause of disability worldwide, prompting the development of smart solutions for treatment. Calcium glycerophosphate (Ca–GP), chitosan (CS), hydroxyapatite (HA), and zein (ZN) were used to fabricate these thermo-responsive hydrogels. Ca–GP, an economically viable and bioactive glycerophosphate source, remains relatively underexplored. Natural protein ZN and the gold standard bone regenerative biomaterial HA were incorporated as reinforcing agents. The resulting composite hydrogels (HGs) exhibit a sol phase at 4 °C–10 °C and transition to gels at body temperature within 4–6 min. Their good injectability and the ability to be easily shaped into complex structures further support their great potential as minimally invasive solutions for treatment. The addition of ZN significantly improved the mechanical and biological properties of the HGs. The highest ZN concentration resulted in the strongest mechanical strength, measuring 52.2 MPa at 40% strain. HGs exhibited optimal swelling and degradation rates. Scanning electron microscopy analysis supported their porous nature. In vitro cell culture assays and wound healing assays demonstrated their excellent biocompatibility and regenerative potential. Drug-loaded HGs exhibited up to 90% drug release and antibacterial activity. All these results support their promising potential to support the regeneration of skeletal defects in a minimally invasive manner.
Mesenchymal stem cell-derived exosomes as cell free nanotherapeutics and nanocarriers
Ali Imran Abid, Guillaume Conzatti, Florence Toti, Nicolas Anton, Thierry Vandamme
Nanomedicine: Nanotechnology, Biology and Medicine, 2024, 61, pp.102769. ⟨10.1016/j.nano.2024.102769⟩
Article dans une revueAbstractMany strategies for regenerating the damaged tissues or degenerating cells are employed in regenerative medicine. Stem cell technology is a modern strategy of the recent approaches, particularly the use of mesenchymal stem cells (MCSs). The ability of MSCs to differentiate as well as their characteristic behaviour as paracrine effector has established them as key elements in tissue repair. Recently, extracellular vesicles (EVs) shed by MSCs have emerged as a promising cell free therapy. This comprehensive review encompasses MSCs-derived exosomes and their therapeutic potential as nanotherapeutics. We also discuss their potency as drug delivery nano-carriers in comparison with liposomes. A better knowledge of EVs behaviour in vivo and of their mechanism of action are key to determine parameters of an optimal formulation in pilot studies and to establish industrial processes.
Sex differences in the SOFA score of ICU patients with sepsis or septic shock: a nationwide analysis
Tobias Zimmermann, Philip Kaufmann, Simon A Amacher, Raoul Sutter, Gregor Loosen, Hamid Merdji, Julie Helms, Atanas Todorov, Pimrapat Gebert, Vera Regitz-Zagrosek, Catherine Gebhard, Mervyn Singer, Martin Siegemund, Caroline E Gebhard
Critical Care, 2024, 28 (1), pp.209. ⟨10.1186/s13054-024-04996-y⟩
Article dans une revueAbstractBackground: The Sequential Organ Failure Assessment (SOFA) score is an important tool in diagnosing sepsis and quantifying organ dysfunction. However, despite emerging evidence of differences in sepsis pathophysiology between women and men, sex is currently not being considered in the SOFA score. We aimed to investigate potential sex-specific differences in organ dysfunction, as measured by the SOFA score, in patients with sepsis or septic shock and explore outcome associations. Methods: Retrospective analysis of sex-specific differences in the SOFA score of prospectively enrolled ICU patients with sepsis or septic shock admitted to one of 85 certified Swiss ICUs between 01/2021 and 12/2022. Results: Of 125,782 patients, 5947 (5%) were admitted with a clinical diagnosis of sepsis (2244, 38%) or septic shock (3703, 62%). Of these, 5078 (37% women) were eligible for analysis. A statistically significant difference of the total SOFA score on admission was found between women (mean 7.5 ± SD 3.6 points) and men (7.8 ± 3.6 points, Wilcoxon rank-sum p < 0.001). This was driven by differences in the coagulation (p = 0.008), liver (p < 0.001) and renal (p < 0.001) SOFA components. Differences between sexes were more prominent in younger patients < 52 years of age (women 7.1 ± 4.0 points vs men 8.1 ± 4.2 points, p = 0.004). No sex-specific differences were found in ICU length of stay (women median 2.6 days (IQR 1.3-5.3) vs men 2.7 days (IQR 1.2-6.0), p = 0.13) and ICU mortality (women 14% vs men 15%, p = 0.17). Conclusion: Sex-specific differences exist in the SOFA score of patients admitted to a Swiss ICU with sepsis or septic shock, particularly in laboratory-based components. Although the clinical meaningfulness of these differences is unclear, a reevaluation of sex-specific thresholds for SOFA score components is warranted in an attempt to make more accurate and individualised classifications.
Refining trial design in sepsis management: balancing realism with ideal outcomes
Julie Helms, Pedro Póvoa, Samir Jaber
Intensive Care Medicine, 2024, Online ahead of print. ⟨10.1007/s00134-024-07521-5⟩
Article dans une revueAbstractNo abstract available
Fundamental Technical Skills of Endovascular Surgery: A Preliminary Study on Its Impact on Skills and Stress during Procedures
Anne-Florence Rouby, Nicole Neumann, Vincenzo Vento, Anne Lejay, Salomé Kuntz, Tristan Bourcier, Walid Oulehri, Jean Bismuth, Nabil Chakfé, Hélène Paris, Paul-Michel Mertes, David Rigberg, Murray L. Shames, Malachi Sheahan, Jason T. Lee, Erica L. Mitchell, John F. Eidt
Annals of Vascular Surgery, 2024, 108, pp.84-91. ⟨10.1016/j.avsg.2024.05.004⟩
Article dans une revueAbstractBackground Our objective is twofold: determining if simulation allows residents to reach proficient surgeons' performance concerning fundamental technical skills of endovascular surgery (FEVS) while investigating effects of the program on surgeons’ stress. Methods Using a FEVS training simulator, 8 endovascular FEVS were performed by vascular surgery residents (simulator-naive or simulator-experienced residents [SER]) and seniors. Total time needed to complete the 8 tasks, called total completion time (TCT), was the main evaluation criterion. Analgesia Nociception Index (ANI) was monitored during simulation. Likert scale questionnaire was filled out after each simulation. Results For each task, TCT was significantly lower for SER and seniors than simulator-naive residents (P = 0.0163). After only 5 simulations, SER were able to reach and even exceed the seniors' level in terms of TCT, with a median time of 10.8 min for SER and 11.9 min for seniors, and wire's movements with a median distance during cannulation of 4.44 m for SER and 4.17 m for seniors. Seniors remained better than SER in terms of precise wire manipulation (wire movement after cannulation), 4.17 m against 4.44 m (3.72–5.96), respectively. Based on the Likert scale stress analysis, seniors felt less stressed than both residents' groups (P = 0.0618). Seniors’ initial ANI and mean ANI over the session were significantly lower than those of the residents, P = 0.0358 and P = 0.0250, respectively. Conclusions We showed that 5 simulation sessions allowed residents to reach experienced surgeons’ capacities on FEVS concerning TCT. Subjectively, seniors felt less stressed than residents, contrary to the results of our objective measures of stress.
iPSCs chondrogenic differentiation for personalized regenerative medicine: a literature review
Eltahir Abdelrazig Mohamed Ali, Rana Smaida, Morgane Meyer, Wenxin Ou, Zongjin Li, Zhongchao Han, Nadia Benkirane-Jessel, Jacques Eric Gottenberg, Guoqiang Hua
Stem Cell Research and Therapy, 2024, 15 (1), ⟨10.1186/s13287-024-03794-1⟩
Article dans une revueAbstractCartilage, an important connective tissue, provides structural support to other body tissues, and serves as a cushion against impacts throughout the body. Found at the end of the bones, cartilage decreases friction and averts bone-on-bone contact during joint movement. Therefore, defects of cartilage can result from natural wear and tear, or from traumatic events, such as injuries or sudden changes in direction during sports activities. Overtime, these cartilage defects which do not always produce immediate symptoms, could lead to severe clinical pathologies. The emergence of induced pluripotent stem cells (iPSCs) has revolutionized the field of regenerative medicine, providing a promising platform for generating various cell types for therapeutic applications. Thus, chondrocytes differentiated from iPSCs become a promising avenue for non-invasive clinical interventions for cartilage injuries and diseases. In this review, we aim to highlight the current strategies used for in vitro chondrogenic differentiation of iPSCs and to explore their multifaceted applications in disease modeling, drug screening, and personalized regenerative medicine. Achieving abundant functional iPSC-derived chondrocytes requires optimization of culture conditions, incorporating specific growth factors, and precise temporal control. Continual improvements in differentiation methods and integration of emerging genome editing, organoids, and 3D bioprinting technologies will enhance the translational applications of iPSC-derived chondrocytes. Finally, to unlock the benefits for patients suffering from cartilage diseases through iPSCs-derived technologies in chondrogenesis, automatic cell therapy manufacturing systems will not only reduce human intervention and ensure sterile processes within isolator-like platforms to minimize contamination risks, but also provide customized production processes with enhanced scalability and efficiency.
Cost-effectiveness of non-invasive airway management of comatose patients with acute poisoning
Bibi Fabiola Ngaleu Siaha, Arnaud Nze Ossima, Maroua Mimouni, Yonathan Freund, Isabelle Durand-Zaleski, Tabassome Simon, Damien Viglino, Marine Cachanado, Clementine Cassard, Emmanuel Montassier, Benedicte Douay, Jeremy Guenezan, Pierrick Le Borgne, Youri Yordanov, Armelle Severin, Melanie Roussel, Matthieu Daniel, Adrien Marteau, Nicolas Peschanski, Dorian Teissandier, Richard Macrez, Julia Morere, Tahar Chouihed, Damien Roux, Frederic Adnet, Ben Bloom, Anthony Chauvin, Pierrick Le Borgne
Intensive Care Medicine, 2024, 50 (7), pp.1169-1171. ⟨10.1007/s00134-024-07452-1⟩
Article dans une revueOne-Year Mortality After Lung Transplantation: Experience of a Single French Center Between 2012 and 2021
Thi Cam Tu Hoang, Lien Han, Sandrine Hirschi, Tristan Degot, Justine Leroux, Pierre-Emmanuel Falcoz, Anne Olland, Nicola Santelmo, Marion Villard, Olivier Collange, Gauthier Appere, Romain Kessler, Benjamin Renaud-Picard
Annals of Transplantation, 2024, 29, pp.e944420. ⟨10.12659/aot.944420⟩
Article dans une revueAbstractBackground: Lung transplantation (LTx) is a life-extending therapy for specific patients with terminal lung diseases. This study aimed to evaluate the associations and causes of 1-year mortality after lung transplantation at Strasbourg University Hospital, France, between 2012 and 2021. <div>Material/Methods:<p>We carried out a retrospective analysis on 425 patients who underwent LTx at Strasbourg University Hospital between January 1, 2012, and December 31, 2021. Pre-transplant, perioperative, and postoperative data were collected from the electronic medical records.</p></div> <div>Results:<p>Among all patients, 94.6% had a LTx, 4.0% a heart-lung transplantation, and 1.4% underwent pancreatic isletlung transplantation. The median age at transplantation was 57 years, with 55.3% male patients. The main native lung disease leading to LTx was chronic obstructive pulmonary disease in 51.1% of patients; 16.2% needed super-urgent LTx.</p><p>The 1-year mortality rate was 11.5%. Most deaths were either caused by multi-organ failure or septic shock.</p><p>In our multivariate analysis, we identified 3 risk factors significantly related to 1-year mortality after LTx: body mass index (BMI) between 25 and 30 kg/m 2 vs BMI between 18.5 and 25 kg/m 2 (P=0.032), postoperative extracorporeal membrane oxygenation support (P=0.034), and intensive care unit length of stay after transplantation (P<0.001). Two other factors were associated with a significantly lower 1-year mortality risk: longer hospital stay after LTx (P=0.024) and tacrolimus prescription (P=0.004).</p></div> <div>Conclusions:<p>Our study reported a 1-year mortality rate of 11.5% after LTx. Although LTx candidates are carefully selected, additional data are required to improve understanding of the risk factors for post-LTx mortality.</p></div>
Effect of the 1-h bundle on mortality in patients with suspected sepsis in the emergency department: a stepped wedge cluster randomized clinical trial
Yonathan Freund, Marta Cancella de Abreu, Soufiane Lebal, Alexandra Rousseau, Thomas Lafon, Youri Yordanov, Richard Macrez, Fabien Coisy, Pierrick Le Borgne, Florent Fémy, Delphine Douillet, Neus Robert Boter, Xavier Eyer, Jean-Baptiste Bouillon-Minois, Carl Ogereau, Donia Bouzid, Hélène Goulet, Melanie Roussel, Geoffroy Rousseau, Jérémy Guenezan, Céline Occelli, Tahar Chouihed, Gina Osorio Quispe, Marine Clea Renard, Judith Gorlicki, Ben Bloom, Tabassome Simon, Camille Gerlier
Intensive Care Medicine, 2024, 50 (7), pp.1086-1095. ⟨10.1007/s00134-024-07509-1⟩
Article dans une revueAbstractPurpose: The efficacy of the 1-h bundle for emergency department (ED) patients with suspected sepsis, which includes lactate measurement, blood culture, broad-spectrum antibiotics administration, administration of 30 mL/kg crystalloid fluid for hypotension or lactate ≥ 4 mmol/L, remains controversial. Methods: We carried out a pragmatic stepped-wedge cluster-randomized trial in 23 EDs in France and Spain. Adult patients with Sepsis-3 criteria or a quick sequential organ failure assessment (SOFA) score ≥ 2 or a lactate > 2 mmol/L were eligible. The intervention was the implementation of the 1-h sepsis bundle. The primary outcome was in-hospital mortality truncated at 28 days. Secondary outcomes included volume of fluid resuscitation at 24 h, acute heart failure at 24 h, SOFA score at 72 h, intensive care unit (ICU) length of stay, number of days on mechanical ventilation or renal replacement therapy, vasopressor free days, unnecessary antibiotic administration, and mortality at 28 days. 1148 patients were planned to be analysed; the study period ended after 873 patients were included. Results: 872 patients (mean age 66, 42% female) were analyzed: 387 (44.4%) in the intervention group and 485 (55.6%) in the control group. Median SOFA score was 3 [1-5]. Median time to antibiotic administration was 40 min in the intervention group vs 113 min in the control group (difference - 73 [95% confidence interval (CI) - 93 to - 53]). There was a significantly higher rate, volume, and shorter time to fluid resuscitation within 3 h in the intervention group. There were 47 (12.1%) in-hospital deaths in the intervention group compared to 61 (12.6%) in the control group (difference in percentage - 0.4 [95% CI - 5.1 to 4.2], adjusted relative risk (aRR) 0.81 [95% CI 0.48 to 1.39]). There were no differences between groups for other secondary endpoints. Conclusions: Among patients with suspected sepsis in the ED, the implementation of the 1-h sepsis bundle was not associated with significant difference in in-hospital mortality. However, this study may be underpowered to report a statistically significant difference between groups.
Determining prognostic indicator for anticoagulant therapy in sepsis-induced disseminated intravascular coagulation
Toshiaki Iba, Kazuma Yamakawa, Yuki Shiko, Ryo Hisamune, Tomoki Tanigawa, Julie Helms, Jerrold H Levy
Journal of Intensive Care, 2024, 12 (1), pp.24. ⟨10.1186/s40560-024-00739-x⟩
Article dans une revueAbstractBackground: There is no reliable indicator that can assess the treatment effect of anticoagulant therapy for sepsisassociated disseminated intravascular coagulation (DIC) in the short term. The aim of this study is to develop and validate a prognostic index identifying 28-day mortality in septic DIC patients treated with antithrombin concentrate after a 3-day treatment. Methods: The cohort for derivation was established utilizing the dataset from post-marketing surveys, while the cohort for validation was acquired from Japan’s nationwide sepsis registry data. Through univariate and multivariate analyses, variables that were independently associated with 28-day mortality were identified within the derivation cohort. Risk variables were then assigned a weighted score based on the risk prediction function, leading to the development of a composite index. Subsequently, the area under the receiver operating characteristic curve (AUROC). 28-day survival was compared by Kaplan–Meier analysis. Results: In the derivation cohort, 252 (16.9%) of the 1492 patients deceased within 28 days. Multivariable analysis identified DIC resolution (hazard ratio [HR]: 0.31, 95% confidence interval [CI]: 0.22–0.45, P < 0.0001) and rate of Sequential Organ Failure Assessment (SOFA) score change (HR: 0.42, 95% CI: 0.36–0.50, P < 0.0001) were identified as independent predictors of death. The composite prognostic index (CPI) was constructed as DIC resolution (yes: 1, no: 0) + rate of SOFA score change (Day 0 SOFA score–Day 3 SOFA score/Day 0 SOFA score). When the CPI is higher than 0.19, the patients are judged to survive. Concerning the derivation cohort, AUROC for survival was 0.76. As for the validation cohort, AUROC was 0.71. Conclusion: CPI can predict the 28-day survival of septic patients with DIC who have undergone antithrombin treatment. It is simple and easy to calculate and will be useful in practice.
Compliance of the Dryness of Dental Handpieces for Their Sterilization under Various Treatment Conditions
Axel Fruhauf, Gabriel Fernandez de Grado, Julie Scholler, Damien Offner
Hygiene, 2024, 4 (2), pp.231 - 237. ⟨10.3390/hygiene4020019⟩
Article dans une revueAbstractObjectives: In the protocol for cleaning and sterilizing dental handpieces (DHs), water retention within the instrument poses a challenge and may compromise the sterilization process. This study aimed to assess the reliability and reproducibility of the sterilization protocol regarding the dryness of DHs. It evaluated the presence of residual water in these instruments after various conditions of treatment through multiple dryness tests. Methods: This comparative study examined the dryness of seven different DHs following five washing-disinfection and/or sterilization protocols. Dabbing tests, shaking by hand, or compressed air tests through DHs and over absorbent paper were employed to ascertain the thorough dryness of DHs after treatment. As soon as the first sign of water appeared on the absorbent paper, the DH was deemed to be not dry. Results: Upon completion of the washing-disinfection protocol without sterilization, five out of seven DHs were deemed dry using the dabbing test, yet none were fully dry when subjected to shaking or compressed air. However, in the four protocols incorporating final sterilization, all DHs were dry according to the three drying tests. Conclusion: This study underscores the essential role of the sterilization step in eliminating residual water from DHs, thereby ensuring optimal conditions for effective sterilization in terms of dryness. Furthermore, the study recommends against relying solely on the dabbing drying test, emphasizing the importance of shaking or using compressed air to confirm instrument dryness.
Care of the critically ill begins in the emergency medicine setting
Keyvan Razazi, Charles-Edouard Luyt, Guillaume Voiriot, Anahita Rouzé, Marc Garnier, Alexis Ferré, Laurent Camous, Nicholas Heming, Nathanaël Lapidus, Anais Charles-Nelson, Armand Mekontso-Dessap, Alain Mercat, Pierre Asfar, François Beloncle, Julien Demiselle, Tài Pham, Arthur Pavot, Xavier Monnet, Christian Richard, Alexandre Demoule, Martin Dres, Julien Mayaux, Alexandra Beurton, Cédric Daubin, Richard Descamps, Aurélie Joret, Damien Du Cheyron, Frédéric Pene, Jean-Daniel Chiche, Mathieu Jozwiak, Paul Jaubert, Guillaume Voiriot, Muriel Fartoukh, Marion Teulier, Clarisse Blayau, Erwen L’her, Cécile Aubron, Laetitia Bodenes, Nicolas Ferriere, Johann Auchabie, Anthony Le Meur, Sylvain Pignal, Thierry Mazzoni, Jean-Pierre Quenot, Pascal Andreu, Jean-Baptiste Roudau, Marie Labruyère, Saad Nseir, Sébastien Preau, Julien Poissy, Daniel Mathieu, Sarah Benhamida, Rémi Paulet, Nicolas Roucaud, Martial Thyrault, Florence Daviet, Sami Hraiech, Gabriel Parzy, Aude Sylvestre, Sébastien Jochmans, Anne-Laure Bouilland, Mehran Monchi, Marc Danguy Des Déserts, Quentin Mathais, Gwendoline Rager, Pierre Pasquier, Jean Reignier, Amélie Seguin, Charlotte Garret, Emmanuel Canet, Jean Dellamonica, Clément Saccheri, Romain Lombardi, Yanis Kouchit, Sophie Jacquier, Armelle Mathonnet, Mai-Ahn Nay, Isabelle Runge, Frédéric Martino, Laure Flurin, Amélie Rolle, Michel Carles, Rémi Coudroy, Arnaud Thille, Jean-Pierre Frat, Maeva Rodriguez, Pascal Beuret, Audrey Tientcheu, Arthur Vincent, Florian Michelin, Fabienne Tamion, Dorothée Carpentier, Déborah Boyer, Christophe Girault, Valérie Gissot, Stéphan Ehrmann, Charlotte Salmon Gandonniere, Djlali Elaroussi, Agathe Delbove, Yannick Fedun, Julien Huntzinger, Eddy Lebas, Grâce Kisoka, Céline Grégoire, Stella Marchetta, Bernard Lambermont, Laurent Argaud, Thomas Baudry, Pierre-Jean Bertrand, Auguste Dargent, Christophe Guitton, Nicolas Chudeau, Mickaël Landais, Cédric Darreau, Alexis Ferré, Antoine Gros, Guillaume Lacave, Fabrice Bruneel, Mathilde Neuville, Jérôme Devaquet, Guillaume Tachon, Richard Gallot, Riad Chelha, Arnaud Galbois, Anne Jallot, Ludivine Chalumeau Lemoine, Khaldoun Kuteifan, Valentin Pointurier, Louise-Marie Jandeaux, Joy Mootien, Charles Damoisel, Benjamin Sztrymf, Matthieu Schmidt, Alain Combes, Juliette Chommeloux, Charles Edouard Luyt, Frédérique Schortgen, Leon Rusel, Camille Jung, Florent Gobert, Damien Vimpere, Lionel Lamhaut, Bertrand Sauneuf, Liliane Charrrier, Julien Calus, Isabelle Desmeules, Benoît Painvin, Jean-Marc Tadie, Vincent Castelain, Baptiste Michard, Jean-Etienne Herbrecht, Mathieu Baldacini, Nicolas Weiss, Sophie Demeret, Clémence Marois, Benjamin Rohaut, Pierre-Henri Moury, Anne-Charlotte Savida, Emmanuel Couadau, Mathieu Série, Nica Alexandru, Cédric Bruel, Candice Fontaine, Sonia Garrigou, Juliette Courtiade Mahler, Maxime Leclerc, Michel Ramakers, Pierre Garçon, Nicole Massou, Ly van Vong, Juliane Sen, Nolwenn Lucas, Franck Chemouni, Annabelle Stoclin, Alexandre Avenel, Henri Faure, Angélie Gentilhomme, Sylvie Ricome, Paul Abraham, Céline Monard, Julien Textoris, Thomas Rimmele, Florent Montini, Gabriel Lejour, Thierry Lazard, Isabelle Etienney, Younes Kerroumi, Claire Dupuis, Marine Bereiziat, Elisabeth Coupez, François Thouy, Clément Hofmann, Nicolas Donat, Anne Chrisment, Rose-Marie Blot, Antoine Kimmoun, Audrey Jacquot, Matthieu Mattei, Bruno Levy, Ramin Ravan, Loïc Dopeux, Jean-Mathias Liteaudon, Delphine Roux, Brice Rey, Radu Anghel, Deborah Schenesse, Vincent Gevrey, Jermy Castanera, Philippe Petua, Benjamin Madeux, Otto Hartman, Michael Piagnerelli, Anne Joosten, Cinderella Noel, Patrick Biston, Thibaut Noel, Gurvan Bouar, Messabi Boukhanza, Elsa Demarest, Marie-France Bajolet, Nathanaël Charrier, Audrey Quenet, Cécile Zylberfajn, Nicolas Dufour, Bruno Mégarbane, Sébastian Voicu, Nicolas Deye, Isabelle Malissin, François Legay, Matthieu Debarre, Nicolas Barbarot, Pierre Fillatre, Bertrand Delord, Thomas Laterrade, Tahar Saghi, Wilfried Pujol, Pierre Julien Cungi, Pierre Esnault, Mickael Cardinale, Vivien Hong Tuan Ha, Grégory Fleury, Marie-Ange Brou, Daniel Zafmahazo, David Tran-Van, Patrick Avargues, Lisa Carenco, Nicolas Robin, Alexandre Ouali, Lucie Houdou, Christophe Le Terrier, Noémie Suh, Steve Primmaz, Jérome Pugin, Emmanuel Weiss, Tobias Gauss, Jean-Denis Moyer, Catherine Paugam Burtz, Béatrice La Combe, Rolland Smonig, Jade Violleau, Pauline Cailliez, Jonathan Chelly, Antoine Marchalot, Cécile Saladin, Christelle Bigot, Pierre-Marie Fayolle, Jules Fatséas, Amr Ibrahim, Dabor Resiere, Rabih Hage, Clémentine Cholet, Marie Cantier, Pierre Trouiler, Philippe Montravers, Brice Lortat-Jacob, Sebastien Tanaka, Alexy Tran Dinh, Jacques Duranteau, Anatole Harrois, Guillaume Dubreuil, Marie Werner, Anne Godier, Sophie Hamada, Diane Zlotnik, Hélène Nougue, Armand Mekontso-Dessap, Guillaume Carteaux, Keyvan Razazi, Nicolas de Prost, Nicolas Mongardon, Nicolas Mongardon, Meriam Lamraoui, Claire Alessandri, Quentin de Roux, Charles de Roquetaillade, Benjamin Chousterman, Alexandre Mebazaa, Etienne Gayat, Marc Garnier, Emmanuel Pardo, Lea Satre-Buisson, Christophe Gutton, Elise Yvin, Clémence Marcault, Elie Azoulay, Michael Darmon, Hafid Ait Oufella, Geofroy Hariri, Tomas Urbina, Sandie Mazerand, Nicholas Heming, Francesca Santi, Pierre Moine, Djillali Annane, Adrien Bouglé, Edris Omar, Aymeric Lancelot, Emmanuelle Begot, Gaétan Plantefeve, Damien Contou, Hervé Mentec, Olivier Pajot, Stanislas Faguer, Olivier Cointault, Laurence Lavayssiere, Marie-Béatrice Nogier, Matthieu Jamme, Claire Pichereau, Jan Hayon, Hervé Outin, François Dépret, Maxime Coutrot, Maité Chaussard, Lucie Guillemet, Pierre Gofn, Romain Thouny, Julien Guntz, Laurent Jadot, Romain Persichini, Vanessa Jean-Michel, Hugues Georges, Thomas Caulier, Gaël Pradel, Marie-Hélène Hausermann, Thi My Hue Nguyen-Valat, Michel Boudinaud, Emmanuel Vivier, Sylvène Rosseli, Gaël Bourdin, Christian Pommier, Marc Vinclair, Simon Poignant, Sandrine Mons, Wulfran Bougouin, Franklin Bruna, Quentin Maestraggi, Christian Roth, Laurent Bitker, François Dhelft, Justine Bonnet-Chateau, Mathilde Filippelli, Tristan Morichau-Beauchant, Stéphane Thierry, Charlotte Le Roy, Mélanie Saint Jouan, Bruno Goncalves, Aurélien Mazeraud, Matthieu Daniel, Tarek Sharshar, Cyril Cadoz, Rostane Gaci, Sébastien Gette, Guillaune Louis, Sophie-Caroline Sacleux, Marie-Amélie Ordan, Aurélie Cravoisy, Marie Conrad, Guilhem Courte, Sébastien Gibot, Younès Benzidi, Claudia Casella, Laurent Serpin, Jean-Lou Setti, Marie-Catherine Besse, Anna Bourreau, Jérôme Pillot, Caroline Rivera, Camille Vinclair, Marie-Aline Robaux, Chloé Achino, Marie-Charlotte Delignette, Tessa Mazard, Frédéric Aubrun, Bruno Bouchet, Aurélien Frérou, Laura Muller, Charlotte Quentin, Samuel Degoul, Xavier Stihle, Claude Sumian, Nicoletta Bergero, Bernard Lanaspre, Hervé Quintard, Eve Marie Maiziere, Pierre-Yves Egreteau, Guillaume Leloup, Florin Berteau, Marjolaine Cottrel, Marie Bouteloup, Matthieu Jeannot, Quentin Blanc, Julien Saison, Isabelle Geneau, Romaric Grenot, Abdel Ouchike, Pascal Hazera, Anne-Lyse Masse, Suela Demiri, Corinne Vezinet, Elodie Baron, Deborah Benchetrit, Antoine Monsel, Grégoire Trebbia, Emmanuelle Schaack, Raphaël Lepecq, Mathieu Bobet, Christophe Vinsonneau, Thibault Dekeyser, Quentin Delforge, Imen Rahmani, Bérengère Vivet, Jonathan Paillot, Lucie Hierle, Claire Chaignat, Sarah Valette, Benoït Her, Jennifer Brunet, Mathieu Page, Fabienne Boiste, Anthony Collin, Florent Bavozet, Aude Garin, Mohamed Dlala, Kais Mhamdi, Bassem Beilouny, Alexandra Lavalard, Severine Perez, Benoit Veber, Pierre-Gildas Guitard, Philippe Gouin, Anna Lamacz, Fabienne Plouvier, Bertrand Delaborde, Aïssa Kherchache, Amina Chaalal, Jean-Damien Ricard, Marc Amouretti, Santiago Freita-Ramos, Damien Roux, Jean-Michel Constantin, Mona Assef, Marine Lecore, Agathe Selves, Florian Prevost, Christian Lamer, Ruiying Shi, Lyes Knani, Sébastien Pili Floury, Lucie Vettoretti, Michael Levy, Lucile Marsac, Stéphane Dauger, Sophie Guilmin-Crépon, Hadrien Winiszewski, Gael Piton, Thibaud Soumagne, Gilles Capellier, Jean-Baptiste Putegnat, Frédérique Bayle, Maya Perrou, Ghyslaine Thao, Guillaume Géri, Cyril Charron, Xavier Repessé, Antoine Vieillard-Baron, Mathieu Guilbart, Pierre-Alexandre Roger, Sébastien Hinard, Pierre-Yves Macq, Kevin Chaulier, Sylvie Goutte, Patrick Chillet, Anaïs Pitta, Barbara Darjent, Amandine Bruneau, Sigismond Lasocki, Maxime Leger, Soizic Gergaud, Pierre Lemarie, Nicolas Terzi, Carole Schwebel, Anaïs Dartevel, Louis-Marie Galerneau, Jean-Luc Diehl, Caroline Hauw-Berlemont, Nicolas Péron, Emmanuel Guérot, Abolfazl Mohebbi Amoli, Michel Benhamou, Jean-Pierre Deyme, Olivier Andremont, Diane Lena, Julien Cady, Arnaud Causeret, Arnaud de la Chapelle, Christophe Cracco, Stéphane Rouleau, David Schnell, Camille Foucault, Cécile Lory, Thibault Chapelle, Vincent Bruckert, Julie Garcia, Abdlazize Sahraoui, Nathalie Abbosh, Caroline Bornstain, Pierre Pernet, Florent Poirson, Ahmed Pasem, Philippe Karoubi, Virginie Poupinel, Caroline Gauthier, François Bouniol, Philippe Feuchere, Florent Bavozet, Anne Heron, Serge Carreira, Malo Emery, Anne Sophie Le Floch, Luana Giovannangeli, Nicolas Herzog, Christophe Giacardi, Thibaut Baudic, Chloé Thill, Said Lebbah, Jessica Palmyre, Florence Tubach, David Hajage, Nicolas Bonnet, Nathan Ebstein, Stéphane Gaudry, Yves Cohen, Julie Noublanche, Olivier Lesieur, Arnaud Sément, Isabel Roca-Cerezo, Michel Pascal, Nesrine Sma, Gwenhaël Colin, Jean-Claude Lacherade, Gauthier Bionz, Natacha Maquigneau, Pierre Bouzat, Michel Durand, Marie-Christine Hérault, Jean-Francois Payen
European Journal of Emergency Medicine, 2024, 31 (3), pp.165-168. ⟨10.1097/MEJ.0000000000001134⟩
Article dans une revueAbstractBackground : Patients infected with the severe acute respiratory syndrome coronavirus 2 (SARS-COV 2) and requiring mechanical ventilation suffer from a high incidence of ventilator associated pneumonia (VAP), mainly related to Enterobacterales. Data regarding extended-spectrum beta-lactamase producing Enterobacterales (ESBL-E) VAP are scarce. We aimed to investigate risk factors and outcomes of ESBL-E related VAP among critically ill coronavirus infectious disease-19 (COVID-19) patients who developed Enterobacterales related VAP. Patients and methods: We performed an ancillary analysis of a multicenter prospective international cohort study (COVID-ICU) that included 4929 COVID-19 critically ill patients. For the present analysis, only patients with complete data regarding resistance status of the first episode of Enterobacterales related VAP (ESBL-E and/or carbapenem-resistant Enterobacterales, CRE) and outcome were included. Results: We included 591 patients with Enterobacterales related VAP. The main causative species were Enterobacter sp (n = 224) , E. coli (n = 111) and K. pneumoniae (n = 104). One hundred and fifteen patients (19%), developed a first ESBL-E related VAP, mostly related to Enterobacter sp (n = 40), K. pneumoniae (n = 36), and E. coli (n = 31). Eight patients (1%) developed CRE related VAP. In a multivariable analysis, African origin (North Africa or Sub-Saharan Africa) (OR 1.7 [1.07–2.71], p = 0.02), time between intubation and VAP (OR 1.06 [1.02–1.09], p = 0.002), PaO 2 /FiO 2 ratio on the day of VAP (OR 0.997 [0.994–0.999], p = 0.04) and trimethoprim-sulfamethoxazole exposure (OR 3.77 [1.15–12.4], p = 0.03) were associated with ESBL-E related VAP. Weaning from mechanical ventilation and mortality did not significantly differ between ESBL-E and non ESBL-E VAP. Conclusion: ESBL-related VAP in COVID-19 critically-ill patients was not infrequent. Several risk factors were identified, among which some are modifiable and deserve further investigation. There was no impact of resistance of the first Enterobacterales related episode of VAP on outcome.
Management of hematological patients requiring emergency chemotherapy in the intensive care unit
Antoine Lafarge, Dara Chean, Raphaël Clere-Jehl, Elie Azoulay, Djamel Mokart, Virginie Lemiale, Laurent Argaud, Dominique Benoit, Naïke Bigé, Magali Bisbal, Emmanuel Canet, Fabrice Bruneel, Alexandre Demoule, Achille Kouatchet, Julien Mayaux, Anne-Sophie Moreau, Saad Nseir, Martine Nyunga, Frédéric Pène, Amélie Seguin, Lara Zafrani, Olfa Hamzaoui, Bruno Mourvillier, Pierre Asfar, David Schnell, Gaëtan Plantefeve, Julio Badie, Nicholas Sedillot, Xavier Wittebole, Jean-Paul Mira, Jean-Philippe Rigaud, Pierre-Louis Declercq, Jean-Pierre Quenot, Frédéric Foret, Djillali Annane, Nicholas Heming, Pierre Bulpa, Patrick M. Honoré, Raphaël Clere-Jehl, Francis Schneider, Jean-Claude Lacherade, Gwenhaël Colin, Christophe Guitton, Olivier Nigeon, Nicolas Grunderbeeck, Bruno François, Christophe Guervilly, Mehran Monchi, Jérôme Roustan, Jean Reignier, Ferhat Meziani, Julie Helms, François Barbier, Toufik Kamel, Grégoire Muller, Nicolas Schryver, Jean-Pierre Frat, Delphine Chatelier, Nicolas Barbarot, François Legay, Charles Vidal, Laurence Dangers, Emmanuelle Mercier, Stephan Ehrmann, Juliette Audibert, Asael Berger, David Joganah, Jonathan Chelly, Laurent Ducros, Florian Reizine, Agathe Delbove, Florent Bavozet, Paul-Simon Pugliesi, Thomas Maldiney, Shidasp Siami, Jean-François Timsit, Pierre Tissières, Sébastien Gibot, Eric Maury
Intensive Care Medicine, 2024, 50 (6), pp.849-860. ⟨10.1007/s00134-024-07454-z⟩
Article dans une revueAbstractHematological malignancies may require rapid-onset treatment because of their short doubling time, notably observed in acute leukemias and specific high-grade lymphomas. Furthermore, in targeted onco-hematological scenarios, chemotherapy is deemed necessary as an emergency measure when facing short-term, life-threatening complications associated with highly chemosensitive hematological malignancies. The risks inherent in the disease itself, or in the initiation of treatment, may then require admission to the intensive care unit (ICU) to optimize monitoring and initial management protocols. Hyperleukocytosis and leukostasis in acute leukemias, tumor lysis syndrome, and disseminated intravascular coagulation are the most frequent onco-hematological complications requiring the implementation of emergency chemotherapy in the ICU. Chemotherapy must also be started urgently in secondary hemophagocytic lymphohistiocytosis. Tumor-induced microangiopathic hemolytic anemia and plasma hyperviscosity due to malignant monoclonal gammopathy represent infrequent yet substantial indications for emergency chemotherapy. In all cases, the administration of emergency chemotherapy in the ICU requires close collaboration between intensivists and hematology specialists. In this review, we provide valuable insights that aid in the identification and treatment of patients requiring emergency chemotherapy in the ICU, offering diagnostic tools and guidance for their overall initial management.
Novel Hydrogels Based on the Nano-Emulsion Formulation Process: Development, Rheological Characterization, and Study as a Drug Delivery System
Usama Jamshaid, Nicolas Anton, Mohamed Elhassan, Guillaume Conzatti, Thierry F Vandamme
Pharmaceutics, 2024, 16 (6), pp.812. ⟨10.3390/pharmaceutics16060812⟩
Article dans une revueAbstractIn this study, we present a new type of polymer-free hydrogel made only from nonionic surfactants, oil, and water. Such a system is produced by taking advantage of the physicochemical behavior and interactions between nonionic surfactants and oil and water phases, according to a process close to spontaneous emulsification used in the production of nano-emulsions. Contrary to the classical process of emulsion-based gel formulation, we propose a simple one-step approach. Beyond the originality of the concept, these nanoemulgels appear as very promising systems able to encapsulate and deliver various molecules with different solubilities. In the first section, we propose a comprehensive investigation of the gel formation process and its limits through oscillatory rheological characterization, characterization of the sol/gel transitions, and gel strength. The second section is focused on the follow-up of the release of an encapsulated model hydrophilic molecule and on the impact of the rheological gel properties on the release profiles.
Sepsis-induced coagulopathy: a matter of timeline
Ferhat Meziani, Toshiaki Iba, Jerrold Levy, Julie Helms
Intensive Care Medicine, 2024, 50 (8), pp.1404-1405. ⟨10.1007/s00134-024-07507-3⟩
Article dans une revueManagement of a solitary bone cyst using a custom-made surgical guide for a minimally invasive approach: technical note and case report
Maxime Delarue, Cyril Perez, Quentin Lucidarme, Fabien Bornert
BMC Oral Health, 2024, 24 (1), pp.560. ⟨10.1186/s12903-024-04308-4⟩
Article dans une revueAbstractBackground: Solitary Bone Cyst (SBC), also known as a simple bone cyst, hemorrhagic cyst, or traumatic cyst is classified by the WHO among non-odontogenic benign lesions of the jaw. The article explores the use of a static 3D-printed surgical guide to treat mandibular SBC, emphasizing a minimally surgical approach for this lesion. Case Presentation: A 20-year-old woman was referred for a persistent mandibular SBC lacuna, without specific complaints. Her medical history included a previous bone trepanation for a SBC in the same area, radiologically and surgically confirmed. X-ray assessment showed a well-defined unilocular radiolucency surrounding the root of the first left lower molar (tooth #36), measuring 10 × 10 mm. Pulp sensitivity was normal. CBCT data and STL files of dental cast were obtained preoperatively and registered. A 3D-printed surgical guide was used for minimally invasive trepanation of the buccal cortical. The simulation used a targeted endodontic microsurgery approach in order to determine axis and diameter of the trephine. Surgery was performed under local anesthesia. The guide was tooth supported integrating tubes and a fork for guiding precise trepanation. A 3.5 mm round bone window was created, leaving an empty cavity confirming SBC diagnosis and permitting bone curettage. A blood clot was obtained to promote bone healing. Complete reossification was observed after 6 months. The follow-up at 2 years confirmed a complete bone healing with normal pulp sensitivity. Discussion: The 3D-printed windowed surgical guide with dental support offers big advantages, including improved visibility and reduced errors. Compared to traditional guides, it eliminates visual hindrance and allows easier and quick access to confined areas as well as an improved irrigation during drilling process. The article also highlights the importance of preoperative planning while acknowledging potential limitations and errors and surgical complications. Conclusion The use of the 3D-printed surgical guide could be used in routine for minimally invasive intervention of SBC. This case also demonstrates the potential utility of this approach in various procedures in oral and maxillofacial surgery. The technique provides precise localization, reducing complications and enhances operative efficiency.
Heparins May Not Be the Optimal Anticoagulants for Sepsis and Sepsis-Associated Disseminated Intravascular Coagulation
Toshiaki Iba, Julie Helms, Takaaki Totoki, Jerrold Levy
Seminars in Thrombosis and Hemostasis, 2024, 50 (07), pp.1012-1018. ⟨10.1055/s-0044-1786754⟩
Article dans une revueAbstractHistorically, heparin has had the longest historical use as an anticoagulant and continues this day to be the primary therapeutic option for preventing thrombosis and thromboembolism in critically ill hospitalized patients. Heparin is also used to treat sepsis and sepsis-associated disseminated intravascular coagulation (DIC) in various countries. However, the efficacy and safety of heparin for this indication remains controversial, as adequately powered randomized clinical studies have not demonstrated as yet a survival benefit in sepsis and sepsis-associated DIC, despite meta-analyses and propensity analyses reporting improved outcomes without increasing bleeding risk. Further, activated protein C and recombinant thrombomodulin showed greater improvements in outcomes compared with heparin, although these effects were inconclusive. In summary, further research is warranted, despite the ongoing clinical use of heparin for sepsis and sepsis-associated DIC. Based on Japanese guidelines, antithrombin or recombinant thrombomodulin may be a preferable choice if they are accessible.
The mitochondrial tRNA-derived fragment, mt-tRF-LeuTAA, couples mitochondrial metabolism to insulin secretion
Cecile Jacovetti, Chris Donnelly, Véronique Menoud, Mara Suleiman, Cristina Cosentino, Jonathan Sobel, Kejing Wu, Karim Bouzakri, Piero Marchetti, Claudiane Guay, Bengt Kayser, Romano Regazzi
Molecular metabolism, 2024, 84, ⟨10.1016/j.molmet.2024.101955⟩
Article dans une revueAbstractObjective The contribution of the mitochondrial electron transfer system to insulin secretion involves more than just energy provision. We identified a small RNA fragment (mt-tRF-LeuTAA) derived from the cleavage of a mitochondrially-encoded tRNA that is conserved between mice and humans. The role of mitochondrially-encoded tRNA-derived fragments remains unknown. This study aimed to characterize the impact of mt-tRF-LeuTAA, on mitochondrial metabolism and pancreatic islet functions. Methods We used antisense oligonucleotides to reduce mt-tRF-LeuTAA levels in primary rat and human islet cells, as well as in insulin-secreting cell lines. We performed a joint transcriptome and proteome analysis upon mt-tRF-LeuTAA inhibition. Additionally, we employed pull-down assays followed by mass spectrometry to identify direct interactors of the fragment. Finally, we characterized the impact of mt-tRF-LeuTAA silencing on the coupling between mitochondrial metabolism and insulin secretion using high-resolution respirometry and insulin secretion assays. Results Our study unveils a modulation of mt-tRF-LeuTAA levels in pancreatic islets in different Type 2 diabetes models and in response to changes in nutritional status. The level of the fragment is finely tuned by the mechanistic target of rapamycin complex 1. Located within mitochondria, mt-tRF-LeuTAA interacts with core subunits and assembly factors of respiratory complexes of the electron transfer system. Silencing of mt-tRF-LeuTAA in islet cells limits the inner mitochondrial membrane potential and impairs mitochondrial oxidative phosphorylation, predominantly by affecting the Succinate (via Complex II)-linked electron transfer pathway. Lowering mt-tRF-LeuTAA impairs insulin secretion of rat and human pancreatic β-cells. Conclusions Our findings indicate that mt-tRF-LeuTAA interacts with electron transfer system complexes and is a pivotal regulator of mitochondrial oxidative phosphorylation and its coupling to insulin secretion.
Infectious Mediastinitis: A Retrospective Cohort Study
Thomas Lemmet, Jean-Philippe Mazzucotelli, Olivier Collange, Léa Fath, Didier Mutter, Cecile Brigand, Pierre-Emmanuel Falcoz, François Danion, Nicolas Lefebvre, Morgane Bourne-Watrin, Victor Gerber, Baptiste Hoellinger, Thibaut Fabacher, Yves Hansmann, Yvon Ruch
Open Forum Infectious Diseases, 2024, 11 (5), ⟨10.1093/ofid/ofae225⟩
Article dans une revueAbstractBackground: This study aimed to characterize the demographics, microbiology, management and treatment outcomes of mediastinitis according to the origin of the infection. Methods: This retrospective observational study enrolled patients who had mediastinitis diagnosed according to the criteria defined by the Centers for Disease Control and Prevention and were treated in Strasbourg University Hospital, France, between 1 January 2010 and 31 December 2020. Results: We investigated 151 cases, including 63 cases of poststernotomy mediastinitis (PSM), 60 cases of mediastinitis due to esophageal perforation (MEP) and 17 cases of descending necrotizing mediastinitis (DNM). The mean patient age (standard deviation) was 63 (14.5) years, and 109 of 151 patients were male. Microbiological documentation varied according to the origin of the infection. When documented, PSM cases were mostly monomicrobial (36 of 53 cases [67.9%]) and involved staphylococci (36 of 53 [67.9%]), whereas MEP and DNM cases were mostly plurimicrobial (38 of 48 [79.2%] and 8 of 12 [66.7%], respectively) and involved digestive or oral flora microorganisms, respectively. The median duration of anti-infective treatment was 41 days (interquartile range, 21-56 days), and 122 of 151 patients (80.8%) benefited from early surgical management. The overall 1-year survival rate was estimated to be 64.8% (95% confidence interval, 56.6%-74.3%), but varied from 80.1% for DNM to 61.5% for MEP. Conclusions: Mediastinitis represents a rare yet deadly infection. The present cohort study exhibited the different patterns observed according to the origin of the infection. Greater insight and knowledge on these differences may help guide the management of these complex infections, especially with respect to empirical anti-infective treatments. Keywords: descending necrotizing mediastinitis; esophageal perforation; infectious mediastinitis; sternotomy.
Harnessing the power of hemostasis testing in intensive care unit
Julie Helms, Toshiaki Iba, Eduardo Angles-Cano
Intensive Care Medicine, 2024, 50 (7), pp.1146-1148. ⟨10.1007/s00134-024-07430-7⟩
Article dans une revueNo association of endothelial lipase and aldose reductase polymorphisms with proliferative diabetic retinopathy: Results of the French prospective multicenter REDIAGEN study
Adrien Henry, Tiffany Boigelot, Thomas Ferreira De Moura, Isabelle Leclercq, Coralie Barbe, Aurore Thiery, Zoubir Djerada, Pierre Nazeyrollas, Christine Clavel, Pascale Cornillet-Lefebvre, Jean-Paul Berrod, Catherine Creuzot-Garcher, Laurent Meyer, David Gaucher, Bruno Guerci, Patrick Lenoble, Solange Milazzo, Jean-Marc Perone, Carl Arndt, Vincent Durlachd
Diabetes & Metabolism, 2024, 50 (3), pp.101533. ⟨10.1016/j.diabet.2024.101533⟩
Article dans une revuePatient-derived tumoroids and proteomic signatures: tools for early drug discovery
Hélène Lê, Jules Deforges, Pasquale Cutolo, Anissa Lamarque, Guoqiang Hua, Véronique Lindner, Shreyansh Jain, Jean-Marc Balloul, Nadia Benkirane-Jessel, Eric Quéméneur
Frontiers in Immunology, 2024, 15, ⟨10.3389/fimmu.2024.1379613⟩
Article dans une revueAbstractOnco-virotherapy is an emergent treatment for cancer based on viral vectors. The therapeutic activity is based on two different mechanisms including tumor-specific oncolysis and immunostimulatory properties. In this study, we evaluated onco-virotherapy in vitro responses on immunocompetent non-small cell lung cancer (NSCLC) patient-derived tumoroids (PDTs) and healthy organoids. PDTs are accurate tools to predict patient’s clinical responses at the in vitro stage. We showed that onco-virotherapy could exert specific antitumoral effects by producing a higher number of viral particles in PDTs than in healthy organoids. In the present work, we used multiplex protein screening, based on proximity extension assay to highlight different response profiles. Our results pointed to the increase of proteins implied in T cell activation, such as IFN-γ following onco-virotherapy treatment. Based on our observation, oncolytic viruses-based therapy responders are dependent on several factors: a high PD-L1 expression, which is a biomarker of greater immune response under immunotherapies, and the number of viral particles present in tumor tissue, which is dependent to the metabolic state of tumoral cells. Herein, we highlight the use of PDTs as an alternative in vitro model to assess patient-specific responses to onco-virotherapy at the early stage of the preclinical phases.
Quest for a stable Cu-ligand complex with a high catalytic activity to produce reactive oxygen species
Merwan Bouraguba, Adeline M. Schmitt, Venkata Suseela Yelisetty, Bertrand Vileno, Frederic Melin, Elise Glattard, Christophe Orvain, Vincent Lebrun, Laurent Raibaut, Marianne Ilbert, Burkhard Bechinger, Petra Hellwig, Christian Gaiddon, Angélique Sour, Peter Faller
Metallomics, 2024, 16 (5), pp.mfae020. ⟨10.1093/mtomcs/mfae020⟩
Article dans une revueAbstractMetal ion-catalyzed overproduction of reactive oxygen species (ROS) is believed to contribute significantly to oxidative stress and be involved in several biological processes, from immune defense to development of diseases. Among the essential metal ions, copper is one of the most efficient catalysts in ROS production in the presence of O2 and a physiological reducing agent such as ascorbate. To control this chemistry, Cu ions are tightly coordinated to biomolecules. Free or loosely bound Cu ions are generally avoided to prevent their toxicity. In the present report, we aim to find stable Cu-ligand complexes (Cu-L) that can efficiently catalyze the production of ROS in the presence of ascorbate under aerobic conditions. Thermodynamic stability would be needed to avoid dissociation in the biological environment, and high ROS catalysis is of interest for applications as antimicrobial or anticancer agents. A series of Cu complexes with the well-known tripodal and tetradentate ligands containing a central amine linked to three pyridyl-alkyl arms of different lengths were investigated. Two of them with mixed arm length showed a higher catalytic activity in the oxidation of ascorbate and subsequent ROS production than Cu salts in buffer, which is an unprecedented result. Despite these high catalytic activities, no increased antimicrobial activity toward Escherichia coli or cytotoxicity against eukaryotic AGS cells in culture related to Cu-L-based ROS production could be observed. The potential reasons for discrepancy between in vitro and in cell data are discussed.
Lung pneumonia severity scoring in chest X-ray images using transformers
Bouthaina Slika, Fadi Dornaika, Hamid Merdji, Karim Hammoudi
Medical and Biological Engineering and Computing, 2024, 62 (8), pp.2389 - 2407. ⟨10.1007/s11517-024-03066-3⟩
Article dans une revueAbstractTo create robust and adaptable methods for lung pneumonia diagnosis and the assessment of its severity using chest Xrays (CXR), access to well-curated, extensive datasets is crucial. Many current severity quantification approaches require resource-intensive training for optimal results. Healthcare practitioners require efficient computational tools to swiftly identify COVID-19 cases and predict the severity of the condition. In this research, we introduce a novel image augmentation scheme as well as a neural network model founded on Vision Transformers (ViT) with a small number of trainable parameters for quantifying COVID-19 severity and other lung diseases. Our method, named Vision Transformer Regressor Infection Prediction (ViTReg-IP), leverages a ViT architecture and a regression head. To assess the model’s adaptability, we evaluate its performance on diverse chest radiograph datasets from various open sources. We conduct a comparative analysis against several competing deep learning methods. Our results achieved a minimum Mean Absolute Error (MAE) of 0.569 and 0.512 and a maximum Pearson Correlation Coefficient (PC) of 0.923 and 0.855 for the geographic extent score and the lung opacity score, respectively, when the CXRs from the RALO dataset were used in training. The experimental results reveal that our model delivers exceptional performance in severity quantification while maintaining robust generalizability, all with relatively modest computational requirements. The source codes used in our work are publicly available at https://github. com/bouthainas/ViTReg-IP.
Chitosan-PNIPAM Thermogel Associated with Hydrogel Microspheres as a Smart Formulation for MSC Injection
Guillaume Conzatti, Clémence Nadal, Jade Berthelot, Laurent Vachoud, Marie-Noëlle Labour, Audrey Tourrette, Emmanuel Belamie
ACS Applied Bio Materials, 2024, 7 (5), pp.3033-3040. ⟨10.1021/ACSABM.4C00071⟩
Article dans une revueMinute ventilation to carbon dioxide slope and risk stratification before lung cancer resection.
Anne Charloux, Anne Olland, Pierre-Emmanuel Falcoz
European Journal of Cardio-Thoracic Surgery, 2024, 65 (4), ⟨10.1093/ejcts/ezad390⟩
Article dans une revueAbstractFunctional assessment before lung cancer resection was originally based on resting pulmonary function tests. In the 1980s, the maximal oxygen uptake (VO2max, approached in routine through peakVO2) measured during symptom-limited exercise was shown to be a better predictor of operative mortality than ventilatory function tests. Today, peakVO2 is integrated in most algorithms for risk stratification. One aim of exercise tests is to stress the whole cardiopulmonary system to estimate the physiological reserve and, thus, to evaluate the ability of patients to survive the physical stress of surgery. Loewen et al. [1] in a prospective multi-institutional study validated the use of peakVO2 to assess operability and also showed that a subset of patients with low peakVO2 values (<15 ml/min/kg) had good tolerance to lung resection. In addition, it has been shown that low peakVO2 was not associated with an increased surgical risk after video-assisted thoracoscopic lobectomy, contrary to open-surgery lobectomy [2]. Besides peakVO2, the minute ventilation (VE)/carbon dioxide output (VCO2) slope demonstrated to be a strong predictor of mortality in heart failure [3], chronic obstructive pulmonary disease and pulmonary hypertension. The VE/VCO2 slope evaluates the ventilatory cost of CO2 removal from the blood, justifying the name of ‘ventilatory efficiency’. The VE/VCO2 slope gives insights into the ventilation-perfusion matching efficiency in the lung and also of gas exchange during physical effort, which may be impaired before pulmonary mechanics in lung disorders. Therefore, it provides additional information to peakVO2, which reflects the integrity of O2 transport chain and utilization during exercise, from ambient air to mitochondria.
Left atrial remodeling and voltage-guided ablation outcome in obese patients with persistent atrial fibrillation
Halim Marzak, Simon Fitouchi, Aïssam Labani, Justine Hammann, Romain Ringele, Mohamad Kanso, Thomas Cardi, Alexandre Schatz, Patrick Ohlmann, Olivier Morel, Laurence Jesel
Frontiers in Cardiovascular Medicine, 2024, 11, pp.1362903. ⟨10.3389/fcvm.2024.1362903⟩
Article dans une revueAbstract<div><p>Background: Obesity is a risk factor for atrial fibrillation (AF). Data regarding left atrial (LA) remodeling in obese patients are scarce. Whether obesity favors AF recurrence after catheter ablation (CA) is still controversial. We assessed the distribution of epicardial atrial fat on computed tomography (CT), LA bipolar voltage, low-voltage zone (LVZ) extent, and the outcome of voltage-guided ablation of persistent AF in obese and non-obese patients. Methods: A total of 139 patients with persistent AF undergoing a first voltage-guided ablation were enrolled and divided into two groups: 74 were non-obese and 65 were obese. Epicardial adipose tissue (EAT) was assessed on a CT scanner. LA endocardial voltage maps were obtained using a 3D mapping system in sinus rhythm. LVZ was defined as a bipolar peak-to-peak voltage amplitude <0.5 mV. Results: LA volume, voltage, and EAT amount were similar in the two groups. LVZ was less frequent in obese patients [12 (18.8%) vs. 26 (35.1%), p = 0.05], particularly on the anterior wall. The posterior and lateral EATs were correlated with posterior and lateral LVZ extent, respectively, in obese patients. After 36 months of follow-up, the AF-free survival rate was similar. Lateral EAT [odds ratio (OR) 1.21, 95% confidence interval (CI) 1-1.4, p = 0.04] and P-wave duration (OR 1.03, 95% CI 1-1.05, p = 0.03), but not body mass index (BMI), were predictors of AF recurrence after CA. Conclusion: In obese patients, LVZ was less marked than in non-obese patients with similar LA volumes, voltage, and EAT amounts. In obese patients, posterior and lateral EATs were correlated with posterior and lateral LVZ extents. Obese patients had a similar and favorable 36-month outcome after AF ablation. BMI was not predictive of AF recurrence.</p></div>
Early glucose abnormalities revealed by continuous glucose monitoring associate with lung function decline in cystic fibrosis: A five-year prospective study
Luc Rakotoarisoa, Laurence Weiss, François Lefebvre, Michele Porzio, Benjamin Renaud-Picard, Bruno Ravoninjatovo, Michel Abely, Isabelle Danner-Boucher, Séverine Dubois, Françoise Troussier, Anne Prevotat, Gilles Rault, Romain Kessler, Laurence Kessler
Journal of Diabetes and its Complications, 2024, 38 (4), pp.108703. ⟨10.1016/j.jdiacomp.2024.108703⟩
Article dans une revueSurvival and response to pulmonary vasodilator therapies in patients with chronic obstructive pulmonary disease and pulmonary vascular phenotype
Mathilde Steger, Matthieu Canuet, Irina Enache, Thibaut Goetsch, Aissam Labani, Léo Meyer, Guillaume Martin, Romain Kessler, David Montani, Marianne Riou
Respiratory Medicine, 2024, 225, ⟨10.1016/j.rmed.2024.107585⟩
Article dans une revueAbstractBackground: The aim of the study was to describe and investigate the effect of pulmonary arterial hypertension (PAH) therapies in a cohort of patients with severe precapillary pulmonary hypertension (PH) associated with chronic obstructive pulmonary disease (COPD; PH-COPD), and to assess factors predictive of treatment response and mortality. Material and methods: We retrospectively included patients with severe incident PH-COPD who received PAH therapy and underwent RHC at diagnosis and on treatment. Results: From 2015 to 2022, 35 severe PH-COPD patients, with clinical features of pulmonary vascular phenotype, were included. Seventeen (48.5%) patients were treated with combined PAH therapy. PAH therapy led to a significant improvement in hemodynamics (PVR -3.5 Wood Units (-39.3%); p < 0.0001), and in the simplified four-strata risk-assessment score, which improved by at least one category in 21 (60%) patients. This effect was more pronounced in patients on dual therapy. Kaplan-Meier estimated survival rates at 1, 3 and 5 years were 94%, 65% and 42% respectively. Univariate analysis showed a significant reduction in survival in patients with a higher simplified risk score at follow-up (Hazard ratio (HR) 2. 88 [1.16-7.15]; p = 0.02). Hypoxemia <50 mmHg was correlated to mortality in multivariate analysis (HR 4.33 [1.08-17.42]; p = 0.04). Conclusions: Our study confirms the poor prognosis of patients with COPD and a pulmonary vascular phenotype and the potential interest of combined PAH therapy in this population, with good tolerability and greater clinical and hemodynamic improvement than monotherapy. Using the simplified risk score during follow-up could be of interest in this population.
Chest tube after lung resection—a small change to a great benefit
Joao Santos Silva, Pierre-Emmanuel Falcoz
AME Clinical Trials Review, 2024, 2, pp.20 - 20. ⟨10.21037/actr-23-27⟩
Article dans une revueVisual outcomes after cataract surgery in monocular compared to binocular patients: a case–control study
Onsi Dabbur, Emilia Koestel, Ali El Habhab, Tanveer Ahmad, Florence Abry, Arnaud Sauer, Tristan Bourcier
International Ophthalmology, 2024, 44 (1), pp.162. ⟨10.1007/s10792-024-02998-x⟩
Article dans une revueAbstractPurpose: We aimed to identify ocular comorbidities and reasons of blindness in monocular patients and to compare visual outcomes of cataract surgery between monocular and binocular patients. Methods: A single-center case-control study was conducted between November 2011 and May 2019 to compare consecutive series of patients needing cataract surgery in Strasbourg University Hospitals, France. Cases were patients with permanent monocular vision loss. Controls were binocularly sighted patients. All patients underwent cataract surgery using phacoemulsification technique. Chart analysis included demographic data, medical history, and surgical determinants data. Student's t tests and Fisher's exact tests were the main methods used for statistical analysis. Results: Each group included 80 patients. The mean age at the time of surgery was significantly higher in monocular than binocular patients (77 vs. 71 years, p < 0.001). Thirty-two monocular patients (40%) had ocular comorbidities, compared to only 19 (23%) in the control group (p < 0.05). The leading cause of monocular status was amblyopia caused by strabismus (22 patients, 27.5%). Age-related macular degeneration, open-angle glaucoma, and diabetic retinopathy were the three main ocular comorbidities that were observed in the monocular group. Monocular patients had significantly lower visual acuity than the control group (p < 0.01) before and after cataract surgery. Conversely, improvement in visual acuity after surgery was not statistically different between groups (p = 0.054). There was no statistically significant difference in the rate of surgical complications between groups (p = 0.622). Conclusions: This study illustrates that cataract surgery in monocular patients is not more complicated than in binocular patients, but that it is significantly delayed.
Assessment of pheniramine in alternative biological matrices by liquid chromatography tandem mass spectrometry
Humera Shafi Makhdoom, Ali Imran Abid, Majida Mujahid, Saira Afzal, Kishwar Sultana, Nisar Hussain, Kashif Barkat
Forensic Science, Medicine, and Pathology, 2024, 20 (4), pp.1291-1302. ⟨10.1007/s12024-024-00795-7⟩
Article dans une revueAbstractPheniramine is an over-the-counter antihistamine drug. Its accessibility and low cost made it more popular among drug abusers in Pakistan. In this study, pheniramine was quantified in both conventional and alternative specimens of twenty chronic drug abusers, aged 16-50 years, who were positive for pheniramine in comprehensive toxicological screening for drugs by gas chromatography with mass spectral detection in positive electron impact mode. Pheniramine was extracted from biological specimens using solid phase extraction and liquid chromatography tandem mass spectrometry was employed for quantification. Chromatographic separation was carried out on a Poroshell120EC-18 (2.1 mm × 50 mm × 2.7 µm) column using water-acetonitrile in formic acid (0.1%) mobile phase in gradient elution mode with 500 μL/min flow rate. Positive electrospray ionization mode and multi-reaction monitoring with ion transitions m/z 241.3 → 195.8 and 167.1 for pheniramine and m/z m/z 247.6 → 173.1 for pheniramine-d6 were employed. The quantification method showed good linear ranges of 2-1000 ng/mL in blood, urine, and oral fluid; 2-1000 ng/mg in hair and 5-1000 ng/mg in nail with ≥ 0.985% coefficient of linearity. The retention time of pheniramine was 3.0 ± 0.1 min. The detection and lower quantification limits were 1 ng/mL and 2 ng/mL for blood, urine, oral fluid and hair whereas 2.5 ng/mg and 5 ng/mg for nail, respectively. Mean extraction recovery and ionization suppression ranged 86.3-95.1% and -4.6 to -14.4% in the studied matrices. Intra-day and inter-day precision were 4.1-9.3% and 2.8-11.2%, respectively. Pheniramine levels in specimens of drug abusers were 23-480 ng/mL in blood, 72-735 ng/mL in urine, 25-379 ng/mL in oral fluid, 10-170 ng/mg in hair and 8-86 ng/mg in nail specimens. Alternative specimens are of utmost significance in clinical and medico-legal cases. In this study, authors compared matrix-matched calibration curves to blood calibration curve and obtained results within ± 10%; thereby justifying the use of blood calibration curve for urine, oral fluid, hair, and nail specimens.
Fibrinolysis as a Causative Mechanism for Bleeding Complications on Extracorporeal Membrane Oxygenation: A Pilot Observational Prospective Study
Julie Helms, Anaïs Curtiaud, François Severac, Marine Tschirhart, Hamid Merdji, Matthieu Bourdin, Geneviève Contant, François Depasse, Ramy Abou Rjeily, Laurent Sattler, Ferhat Meziani, Eduardo Angles-Cano
Anesthesiology, 2024, 141 (1), pp.75-86. ⟨10.1097/aln.0000000000004980⟩
Article dans une revueAbstractBackground: Extracorporeal membrane oxygenation (ECMO) is associated with a high risk of bleeding complications. The specific impact of ECMO on fibrinolysis remains unexplored. The objective of the current pilot observational prospective study was to investigate the longitudinal dynamics of fibrinolytic markers— i.e. , changes over time—in the context of bleeding events in patients on ECMO. Methods: Longitudinal dynamics of contact phase components (kininogen and bradykinin) and fibrinolysis markers (tissue plasminogen activator [tPA], plasminogen activator inhibitor-1 [PAI-1], their complexes [tPA•PAI-1], plasmin–antiplasmin complexes, plasminogen, and D-dimer) were measured in patients undergoing venovenous and venoarterial ECMO, before implantation, at 0, 6, and 12 h after implantation, and daily thereafter. Results: The cohort consisted of 30 patients (214 ECMO days). The concentrations of tPA, D-dimer, plasmin–antiplasmin complexes, PAI-1, and tPA•PAI-1 complexes were increased, whereas plasminogen decreased compared to normal values. A noteworthy divergence was observed between hemorrhagic and nonhemorrhagic patients: in bleeding patients, D-dimer, plasmin–antiplasmin, tPA, PAI-1, and tPA•PAI-1 followed an increasing kinetics before hemorrhage and then decreased to their baseline level; conversely, nonbleeding patients showed a decreasing kinetics in these markers. Also, D-dimer and tPA followed an increasing kinetics in bleeding patients compared to nonbleeding patients (median values for D-dimer dynamics: 1,080 vs . –440 ng/ml, P = 0.05; tPA dynamics: 0.130 vs . 0.100 nM, P = 0.038), and both markers significantly increased the day before hemorrhage. A tPA concentration above 0.304 nM was associated with bleeding events (odds ratio, 4.92; 95% CI, 1.01 to 24.08; P = 0.049). Conclusions: Contact activation induces fibrinolysis in ECMO patients, especially in patients experiencing bleeding. This finding supports the role of this mechanism as a possible causal factor for hemorrhages during ECMO and open new avenues for novel therapeutic perspectives. Editor’s Perspective What We Already Know about This Topic What This Article Tells Us That Is New
The Detection of Neutrophil Activation by Automated Blood Cell Counter in Sepsis
Julie Helms, Ferhat Meziani, Laurent Mauvieux, Toshiaki Iba
Juntendo Medical Journal, 2024, 70 (2), pp.114 - 117. ⟨10.14789/jmj.jmj23-0044-p⟩
Article dans une revueAbstractNeutrophils serve as the frontline defenders in the host's response to infections. However, the available methods for assessing the activated status of neutrophils are still limited. The immature cells that appear during sepsis are large with complex cytoplasmic components and rich nucleic acids, making them diagnosable by cell population data analysis using the automated cell counter. The changes are expressed as increased forward scattered light, side fluorescence light, and side fluorescence distribution width. Additionally, changes in side fluorescence light may indicate the neutrophil extracellular trap formation and can be useful for the diagnosis of sepsis-associated disseminated intravascular coagulation.
Eco-friendly synthesis of mesoporous bioactive glass ceramics and functionalization for drug delivery and hard tissue engineering applications
Sobia Tabassum, Muhammad Saqib, Madeeha Batool, Faiza Sharif, Mazhar Amjad Gilani, Olivier Huck
Biomedical Materials, 2024, 19 (3), pp.035014. ⟨10.1088/1748-605x/ad2c19⟩
Article dans une revueAbstractHard tissue regenerative mesoporous bioactive glass (MBG) has traditionally been synthesized using costly and toxic alkoxysilane agents and harsh conditions. In this study, MBG was synthesized using the cheaper reagent SiO 2 by using a co-precipitation approach. The surface properties of MBG ceramic were tailored by functionalizing with amino and carboxylic groups, aiming to develop an efficient drug delivery system for treating bone infections occurring during or after reconstruction surgeries. The amino groups were introduced through a salinization reaction, while the carboxylate groups were added via a chain elongation reaction. The MBG, MBG-NH2, and MBG-NH-COOH were analyzed by using various techniques: x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET), scanning electron microscopy and energy-dispersive x-ray spectroscopy. The XRD results confirmed the successful preparation of MBG, and the FTIR results indicated successful functionalization. BET analysis revealed that the prepared samples were mesoporous, and functionalization tuned their surface area and surface properties. Cefixime, an antibiotic, was loaded onto MBG, MBG-NH2, and MBG-NH-COOH to test their drug-carrying capacity. Comparatively, MBG-NH-COOH showed good drug loading and sustained release behavior. The release of the drug followed the Fickian diffusion mechanism. All prepared samples displayed favorable biocompatibility at higher concentration in the Alamar blue assay with MC3T3 cells and exhibited the good potential for hard tissue regeneration, as carbonated hydroxyapatite formed on their surfaces in simulated body fluid.
TLRs1-10 Protein Expression in Circulating Human White Blood Cells during Bacterial and COVID-19 Infections
Louise Chomel, Mathieu Vogt, Julien Demiselle, Pierrick Le Borgne, Marine Tschirhart, Valentin Morandeau, Hamid Merdji, Laurent Miguet, Julie Helms, Ferhat Meziani, Laurent Mauvieux
Journal of Innate Immunity, 2024, 16 (1), pp.216-225. ⟨10.1159/000536593⟩
Article dans une revueAbstractIntroduction: Toll-like receptors play crucial roles in the sepsis-induced systemic inflammatory response. Septic shock mortality correlates with overexpression of neutrophilic TLR2 and TLR9, while the role of TLR4 overexpression remains a debate. In addition, TLRs are involved in the pathogenesis of viral infections such as COVID-19, where the single-stranded RNA of SARS-CoV-2 is recognized by TLR7 and TLR8, and the spike protein activates TLR4. Methods: In this study, we conducted a comprehensive analysis of TLRs 1–10 expressions in white blood cells from 71 patients with bacterial and viral infections. Patients were divided into 4 groups based on disease type and severity (sepsis, septic shock, moderate, and severe COVID-19) and compared to 7 healthy volunteers. Results: We observed a significant reduction in the expression of TLR4 and its co-receptor CD14 in septic shock neutrophils compared to the control group (p < 0.001). Severe COVID-19 patients exhibited a significant increase in TLR3 and TLR7 levels in neutrophils compared to controls (p < 0.05). Septic shock patients also showed a similar increase in TLR7 in neutrophils along with elevated intermediate monocytes (CD14+CD16+) compared to the control group (p < 0.005 and p < 0.001, respectively). However, TLR expression remained unchanged in lymphocytes. Conclusion: This study provides further insights into the mechanisms of TLR activation in various infectious conditions. Additional analysis is needed to assess their correlation with patient outcome and to evaluate the impact of TLR-pathway modulation during septic shock and severe COVID-19.
Optimal Heart Failure Medical Therapy and Mortality in Survivors of Cardiogenic Shock: Insights From the FRENSHOCK Registry
Kensuke Matsushita, Clément Delmas, Benjamin Marchandot, François Roubille, Nicolas Lamblin, Guillaume Leurent, Bruno Levy, Meyer Elbaz, Sebastien Champion, Pascal Lim, Francis Schneider, Hadi Khachab, Adrien Carmona, Antonin Trimaille, Jeremy Bourenne, Marie‐france Seronde, Guillaume Schurtz, Brahim Harbaoui, Gerald Vanzetto, Caroline Biendel, Vincent Labbe, Nicolas Combaret, Jacques Mansourati, Emmanuelle Filippi, Julien Maizel, Hamid Merdji, Benoit Lattuca, Edouard Gerbaud, Eric Bonnefoy, Etienne Puymirat, Laurent Bonello, Olivier Morel
Journal of the American Heart Association, 2024, 13 (5), pp.e030975. ⟨10.1161/JAHA.123.030975⟩
Article dans une revueAbstractBackground The effects of pharmacological therapy on cardiogenic shock (CS) survivors have not been extensively studied. Thus, this study investigated the association between guideline‐directed heart failure (HF) medical therapy (GDMT) and one‐year survival rate in patients who are post‐CS. Methods and Results FRENSHOCK (French Observatory on the Management of Cardiogenic Shock in 2016) registry was a prospective multicenter observational survey, conducted in metropolitan French intensive care units and intensive cardiac care units. Of 772 patients, 535 patients were enrolled in the present analysis following the exclusion of 217 in‐hospital deaths and 20 patients with missing medical records. Patients with triple GDMT (beta‐blockers, renin‐angiotensin system inhibitors, and mineralocorticoid receptor antagonists) at discharge (n=112) were likely to have lower left ventricular ejection fraction on admission and at discharge compared with those without triple GDMT (n=423) (22% versus 28%, P <0.001 and 29% versus 37%, P <0.001, respectively). In the overall cohort, the one‐year mortality rate was 23%. Triple GDMT prescription was significantly associated with a lower one‐year all‐cause mortality compared with non‐triple GDMT (adjusted hazard ratio 0.44 [95% CI, 0.19–0.80]; P =0.007). Similarly, 2:1 propensity score matching and inverse probability treatment weighting based on the propensity score demonstrated a lower incidence of one‐year mortality in the triple GDMT group. As the number of HF drugs increased, a stepwise decrease in mortality was observed (log rank; P <0.001). Conclusions In survivors of CS, the one‐year mortality rate was significantly lower in those with triple GDMT. Therefore, this study suggests that intensive HF therapy should be considered in patients following CS.
Polyphenol-rich Aronia melanocarpa juice sustains eNOS activation through phosphorylation and expression via redox-sensitive pathways in endothelial cells
Jong Hun Kim, Min Sik Choi, Cyril Auger, Ki Won Lee, Valérie Schini-Kerth
Food science and biotechnology, 2024, 33 (12), pp.2865-2875. ⟨10.1007/s10068-024-01546-8⟩
Article dans une revueCardiogenic shock and chronic kidney disease: Dangerous liaisons
Miloud Cherbi, Eric Bonnefoy, Etienne Puymirat, Nicolas Lamblin, Edouard Gerbaud, Laurent Bonello, Bruno Levy, Pascal Lim, Laura Muller, Hamid Merdji, Grégoire Range, Emile Ferrari, Meyer Elbaz, Hadi Khachab, Jeremy Bourenne, Marie-France Seronde, Nans Florens, Guillaume Schurtz, Vincent Labbé, Brahim Harbaoui, Gerald Vanzetto, Nicolas Combaret, Benjamin Marchandot, Benoit Lattuca, Guillaume Leurent, Stanislas Faguer, François Roubille, Clément Delmas
Archives of cardiovascular diseases, 2024, 117 (4), pp.255-265. ⟨10.1016/j.acvd.2024.01.006⟩
Article dans une revueAbstractBackground: Chronic kidney disease (CKD) is one of the leading causes of death worldwide, closely interrelated with cardiovascular diseases, ultimately leading to the failure of both organs - the so-called "cardiorenal syndrome". Despite this burden, data related to cardiogenic shock outcomes in CKD patients are scarce.Methods: FRENSHOCK (NCT02703038) was a prospective registry involving 772 patients with cardiogenic shock from 49 centres. One-year outcomes (rehospitalization, death, heart transplantation, ventricular assist device) were analysed according to history of CKD at admission and were adjusted on independent predictive factors.Results: CKD was present in 164 of 771 patients (21.3%) with cardiogenic shock; these patients were older (72.7 vs. 63.9years) and had more comorbidities than those without CKD. CKD was associated with a higher rate of all-cause mortality at 1month (36.6% vs. 23.2%; hazard ratio 1.39, 95% confidence interval 1.01-1.9; P=0.04) and 1year (62.8% vs. 40.5%, hazard ratio 1.39, 95% confidence interval 1.09-1.77; P<0.01). Patients with CKD were less likely to be treated with norepinephrine/epinephrine or undergo invasive ventilation or receive mechanical circulatory support, but were more likely to receive renal replacement therapy (RRT). RRT was associated with a higher risk of all-cause death at 1month and 1year regardless of baseline CKD status.Conclusions: Cardiogenic shock and CKD are frequent "cross-talking" conditions with limited therapeutic options, resulting in higher rates of death at 1month and 1year. RRT is a strong predictor of death, regardless of preexisting CKD. Multidisciplinary teams involving cardiac and kidney physicians are required to provide integrated care for patients with failure of both organs.
The unfolded protein response-glutathione metabolism axis: A novel target of a cycloruthenated complexes bypassing tumor resistance mechanisms
Gilles Riegel, Christophe Orvain, Sevda Recberlik, Marie-Elodie Spaety, Gernot Poschet, Aina Venkatasamy, Masami Yamamoto, Sachiyo Nomura, Tetsyua Tsukamoto, Murielle Masson, Isabelle Gross, Ronan Le Lagadec, Georg Mellitzer, Christian Gaiddon
Cancer Letters, 2024, 585, pp.216671. ⟨10.1016/j.canlet.2024.216671⟩
Article dans une revueAbstract<div><p>Platinum-based drugs remain the reference treatment for gastric cancer (GC). However, the frequency of resistance, due to mutations in TP53 or alterations in the energy and redox metabolisms, impairs the efficacy of current treatments, highlighting the need for alternative therapeutic options.</p><p>Here, we show that a cycloruthenated compound targeting the redox metabolism, RDC11, induces higher cytotoxicity than oxaliplatin in GC cells and is more potent in reducing tumor growth in vivo. Detailed investigations into the mode of action of RDC11 indicated that it targets the glutathione (GSH) metabolism, which is an important drug resistance mechanism. We demonstrate that cycloruthenated complexes regulate the expression of enzymes of the transsulfuration pathway via the Unfolded Protein Response (UPR) and its effector ATF4. Furthermore, RDC11 induces the expression of SLC7A11 encoding for the cystine/glutamate antiporter xCT. These effects lead to a lower cellular GSH content and elevated oxygen reactive species production, causing the activation of a caspase-independent apoptosis. Altogether, this study provides the first evidence that cycloruthenated complexes target the GSH metabolism, neutralizing thereby a major resistance mechanism towards platinum-based chemotherapies and anticancer immune response.</p><p>1.</p></div>
Healthcare-associated infections in patients with severe COVID-19 supported with extracorporeal membrane oxygenation: a nationwide cohort study
Nicolas Nesseler, Alexandre Mansour, Matthieu Schmidt, Marylou Para, Alizee Porto, Pierre Emmanuel Falcoz, Nicolas Mongardon, Claire Fougerou, James Ross, Antoine Beurton, Lucie Gaide-Chevronnay, Pierre-Grégoire Guinot, Guillaume Lebreton, Erwan Flécher, André Vincentelli, Nicolas Massart
Critical Care, 2024, 28 (1), pp.54. ⟨10.1186/s13054-024-04832-3⟩
Article dans une revueAbstractAbstract Background Both critically ill patients with coronavirus disease 2019 (COVID-19) and patients receiving extracorporeal membrane oxygenation (ECMO) support exhibit a high incidence of healthcare-associated infections (HAI). However, data on incidence, microbiology, resistance patterns, and the impact of HAI on outcomes in patients receiving ECMO for severe COVID-19 remain limited. We aimed to report HAI incidence and microbiology in patients receiving ECMO for severe COVID-19 and to evaluate the impact of ECMO-associated infections (ECMO-AI) on in-hospital mortality. Methods For this study, we analyzed data from 701 patients included in the ECMOSARS registry which included COVID-19 patients supported by ECMO in France. Results Among 602 analyzed patients for whom HAI and hospital mortality data were available, 214 (36%) had ECMO-AI, resulting in an incidence rate of 27 ECMO-AI per 1000 ECMO days at risk. Of these, 154 patients had bloodstream infection (BSI) and 117 patients had ventilator-associated pneumonia (VAP). The responsible microorganisms were Enterobacteriaceae (34% for BSI and 48% for VAP), Enterococcus species (25% and 6%, respectively) and non-fermenting Gram-negative bacilli (13% and 20%, respectively). Fungal infections were also observed (10% for BSI and 3% for VAP), as were multidrug-resistant organisms (21% and 15%, respectively). Using a Cox multistate model, ECMO-AI were not found associated with hospital death (HR = 1.00 95% CI [0.79–1.26], p = 0.986). Conclusions In a nationwide cohort of COVID-19 patients receiving ECMO support, we observed a high incidence of ECMO-AI. ECMO-AI were not found associated with hospital death. Trial registration number NCT04397588 (May 21, 2020).
Blood MMP-9 measured at 2 years after lung transplantation as a prognostic biomarker of chronic lung allograft dysfunction
Adrien Tissot, Eugénie Durand, Thomas Goronflot, Benjamin Coiffard, Benjamin Renaud-Picard, Antoine Roux, Xavier Demant, Jean-François Mornex, Loïc Falque, Mathilde Salpin, Jérôme Le Pavec, Thomas Villeneuve, Véronique Boussaud, Christiane Knoop, Antoine Magnan, David Lair, Laureline Berthelot, Richard Danger, Sophie Brouard
Respiratory Research, 2024, 25 (1), pp.88. ⟨10.1186/s12931-024-02707-3⟩
Article dans une revueAbstractBackground : Long-term outcomes of lung transplantation (LTx) remain hampered by chronic lung allograft dysfunction (CLAD). Matrix metalloproteinase 9 (MMP-9) is a secretory endopeptidase identified as a key mediator in fibrosis processes associated with CLAD. The objective of this study was to investigate whether plasma MMP9 levels may be prognostic of CLAD development. Methods : Participants were selected from the Cohort in Lung Transplantation (COLT) for which a biocollection was associated. We considered two time points, year 1 (Y1) and year 2 (Y2) post-transplantation, for plasma MMP-9 measurements. We analysed stable recipients at those time points, comparing those who would develop a CLAD within the 2 years following the measurement to those who would remain stable 2 years after. Results : MMP-9 levels at Y1 were not significantly different between the CLAD and stable groups (230 ng/ml vs. 160 ng/ml, p = 0.4). For the Y2 analysis, 129 recipients were included, of whom 50 developed CLAD within 2 years and 79 remained stable within 2 years. MMP-9 plasma median concentrations were higher in recipients who then developed CLAD than in the stable group (230 ng/ml vs. 118 ng/ml, p = 0.003). In the multivariate analysis, the Y2 MMP-9 level was independently associated with CLAD, with an average increase of 150 ng/ml (95% CI [0–253], p = 0.05) compared to that in the stable group. The Y2 ROC curve revealed a discriminating capacity of blood MMP-9 with an area under the curve of 66%. Conclusion : Plasmatic MMP-9 levels measured 2 years after lung transplantation have prognostic value for CLAD.
Training approaches and devices utilization during endotracheal intubation in French Emergency Departments: a nationwide survey
Pierrick Le Borgne, Karine Alamé, Aline Chenou, Anne Hoffmann, Véronique Burger, Sabrina Kepka, Pascal Bilbault, Quentin Le Bastard, Maelle Martin, Jean-Baptiste Lascarrou
European Journal of Emergency Medicine, 2024, 31 (1), pp.46-52. ⟨10.1097/mej.0000000000001091⟩
Article dans une revueAbstractBackground and importance: Endotracheal intubation is a lifesaving procedure that is reportedly associated to a significant risk of adverse events. Recent trials have reported that the use of videolaryngoscope and of a stylet might limit this risk during emergency intubation. Objectives: The objective of this study was to provide a national description of intubation practices in French Emergency Departments (EDs). Settings and participants: We conducted an online nationwide survey by sending an anonymous 37-item questionnaire via e-mail to 629 physicians in French EDs between 2020 and 2022. Intervention: A single questionnaire was sent to a sole referent physician in each ED. Outcome measures and analysis: The primary endpoint was to assess the proportion of French EDs in which videolaryngoscopy was available for emergency intubation and its use in routine practice. Secondary endpoints included the presence of local protocol or standard of procedure for intubation, availability of capnography, and routine use of a stylet. Main results: Of the surveyed EDs, 342 (54.4%) returned the completed questionnaire. A videolaryngoscope was available in 193 (56%) EDs, and direct laryngoscopy without a stylet was majorly used as the primary approach in 280 (82%) EDs. Among the participating EDs, 74% had an established protocol for intubation and 92% provided a capnography device for routine verification of tube position. In cases of difficult intubation, the use of a bougie was recommended in 227 (81%) EDs, and a switch to a videolaryngoscope in 16 (6%) EDs. The most frequently used videolaryngoscope models were McGrath Mac Airtraq (51%), followed by Airtraq (41%), and Glidescope (14%). Conclusion: In this large French survey, the majority of EDs recommended direct laryngoscopy without stylet, with seldom use of videolaryngoscopy.
Altering relative metal-binding affinities in multifunctional Metallochaperones for mutant p53 reactivation
Kalvin Kwan, Omar Castro-Sandoval, Benjamin Ma, Diego Martelino, Ashkan Saffari, Xi Lan Liu, Christophe Orvain, Georg Mellitzer, Christian Gaiddon, Tim Storr
Journal of Inorganic Biochemistry, 2024, 251 (19), pp.112433. ⟨10.1016/j.jinorgbio.2023.112433⟩
Article dans une revueAbstractThe p53 protein plays a major role in cancer prevention, and over 50% of cancer diagnoses can be attributed to p53 malfunction. p53 incorporates a structural Zn site that is required for proper protein folding and function, and in many cases point mutations can result in loss of the Zn2+ ion, destabilization of the tertiary structure, and eventual amyloid aggregation. Herein, we report a series of compounds designed to act as small molecule stabilizers of mutant p53, and feature Zn-binding fragments to chaperone Zn2+ to the metal depleted site and restore wild-type (WT) function. Many Zn metallochaperones (ZMCs) have been shown to generate intracellular reactive oxygen species (ROS), likely by chelating redox-active metals such as Fe2+/3+ and Cu+/2+ and undergoing associated Fenton chemistry. High levels of ROS can result in off-target effects and general toxicity, and thus, careful tuning of ligand Zn2+ affinity, in comparison to the affinity for other endogenous metals, is important for selective mutant p53 targeting. In this work we show that by using carboxylate donors in place of pyridine we can change the relative Zn2+/Cu2+ binding ability in a series of ligands, and we investigate the impact of donor group changes on metallochaperone activity and overall cytotoxicity in two mutant p53 cancer cell lines (NUGC3 and SKGT2).
Paradoxical bradycardia after epinephrine administration
C. Huet, M. Simon, P. Le Borgne
Annales françaises de médecine d'urgence, 2024, 14 (1), pp.43-45. ⟨10.1684/afmu.2024.0550⟩
Article dans une revueFormation of a Controllable Diffusion Barrier Layer on the Surface of Polydimethylsiloxane Films by Infrared Laser Irradiation
Hung Quoc Tran, Asad Ur Rehman, Philippe Fioux, Aissam Airoudj, Thierry Vandamme, Valeriy Luchnikov
ACS Applied Materials & Interfaces, 2024, 16 (6), pp.7983-7995. ⟨10.1021/acsami.3c15073⟩
Article dans une revueAbstract<div><p>Developing diffusion barrier layer on material interfaces has potential applications in various fields like packaging materials, pharmaceuticals, chemical filtration, microelectronics, medical devices. Although numerous physical and chemical methods have been proposed to generate the diffusion barrier layer, the complexity of fabrication techniques and high manufacturing costs limit their practical utility. Here, we propose an innovative approach to fabricate the diffusion barrier layer by irradiating poly(dimethylsiloxane) (PDMS) with a midinfrared (m) CO 2 laser. This process directly creates a diffusion barrier layer on the PDMS surface by forming heavily crosslinked network in the polymer matrix. The optimal irradiation conditions were investigated by modulating the defocusing distance, laser power,</p></div>
The Purinergic Nature of Pseudoxanthoma Elasticum
Gilles Kauffenstein, Ludovic Martin, Olivier Le Saux
Biology, 2024, 13 (2), pp.74. ⟨10.3390/biology13020074⟩
Article dans une revueAbstractPseudoxanthoma Elasticum (PXE) is an inherited disease characterized by elastic fiber calcification in the eyes, the skin and the cardiovascular system. PXE results from mutations in ABCC6 that encodes an ABC transporter primarily expressed in the liver and kidneys. It took nearly 15 years after identifying the gene to better understand the etiology of PXE. ABCC6 function facilitates the efflux of ATP, which is sequentially hydrolyzed by the ectonucleotidases ENPP1 and CD73 into pyrophosphate (PPi) and adenosine, both inhibitors of calcification. PXE, together with General Arterial Calcification of Infancy (GACI caused by ENPP1 mutations) as well as Calcification of Joints and Arteries (CALJA caused by NT5E/CD73 mutations), forms a disease continuum with overlapping phenotypes and shares steps of the same molecular pathway. The explanation of these phenotypes place ABCC6 as an upstream regulator of a purinergic pathway (ABCC6 → ENPP1 → CD73 → TNAP) that notably inhibits mineralization by maintaining a physiological Pi/PPi ratio in connective tissues. Based on a review of the literature and our recent experimental data, we suggest that PXE (and GACI/CALJA) be considered as an authentic “purinergic disease”. In this article, we recapitulate the pathobiology of PXE and review molecular and physiological data showing that, beyond PPi deficiency and ectopic calcification, PXE is associated with wide and complex alterations of purinergic systems. Finally, we speculate on the future prospects regarding purinergic signaling and other aspects of this disease.
In Vitro and Biological Evaluation of Oral Fast-Disintegrating Films Containing Ranitidine HCl and Syloid® 244FP-Based Ternary Solid Dispersion of Flurbiprofen
Aisha Rashid, Muhammad Irfan, Yousaf Kamal, Sajid Asghar, Syed Haroon Khalid, Ghulam Hussain, Abdulrahman Alshammari, Thamer H. Albekairi, Metab Alharbi, Hafeez Ullah Khan, Zunera Chauhdary, Thierry F. Vandamme, Ikram Ullah Khan
Pharmaceutics, 2024, 16 (2), pp.164. ⟨10.3390/pharmaceutics16020164⟩
Article dans une revueAbstractFlurbiprofen (FBP), a nonsteroidal anti-inflammatory drug (NSAID), is commonly used to treat the pain of rheumatoid arthritis, but in prolonged use it causes gastric irritation and ulcer. To avoid these adverse events of NSAIDs, the simultaneous administration of H2 receptor antagonists such as ranitidine hydrochloride (RHCl) is obligatory. Here, we developed composite oral fast-disintegrating films (ODFs) containing FBP along with RHCl to provide a gastroprotective effect as well as to enhance the solubility and bioavailability of FBP. The ternary solid dispersion (TSD) of FBP was fabricated with Syloid® 244FP and poloxamer® 188 using the solvent evaporation technique. The synthesized FBP-TSD (coded as TSD) was loaded alone (S1) and in combination with plain RHCl (S2) in the composite ODFs based on hydroxypropyl methyl cellulose E5 (HPMC E5). The synthesized composite ODFs were evaluated by in vitro (thickness, folding endurance, tensile strength, disintegration, SEM, FTIR, XRD and release study) and in vivo (analgesic, anti-inflammatory activity, pro-inflammatory cytokines and gastroprotective assay) studies. The in vitro characterization revealed that TSD preserved its integrity and was effectively loaded in S1 and S2 with optimal compatibility. The films were durable and flexible with a disintegration time ≈15 s. The release profile at pH 6.8 showed that the solid dispersion of FBP improved the drug solubility and release when compared with pure FBP. After in vitro studies, it was observed that the analgesic and anti-inflammatory activity of S2 was higher than that of pure FBP and other synthesized formulations (TSD and S1). Similarly, the level of cytokines (TNF-α and IL-6) was also markedly reduced by S2. Furthermore, a gastroprotective assay confirmed that S2 has a higher safety profile in comparison to pure FBP and other synthesized formulations (TSD and S1). Thus, composite ODF (S2) can effectively enhance the FBP solubility and its therapeutic efficacy, along with its gastroprotective effect.
Consolidation of Spray-Dried Amorphous Calcium Phosphate by Ultrafast Compression: Chemical and Structural Overview
Sylvain Le Grill, Christophe Drouet, Olivier Marsan, Yannick Coppel, Vincent Mazel, Marie-Claire Barthélémy, Fabien Brouillet
Nanomaterials, 2024, 14 (2), pp.152. ⟨10.3390/nano14020152⟩
Article dans une revueAbstractA large amount of research in orthopedic and maxillofacial domains is dedicated to the development of bioactive 3D scaffolds. This includes the search for highly resorbable compounds, capable of triggering cell activity and favoring bone regeneration. Considering the phosphocalcic nature of bone mineral, these aims can be achieved by the choice of amorphous calcium phosphates (ACPs). Because of their metastable property, these compounds are however to-date seldom used in bulk form. In this work, we used a non-conventional “cold sintering” approach based on ultrafast low-pressure RT compaction to successfully consolidate ACP pellets while preserving their amorphous nature (XRD). Complementary spectroscopic analyses (FTIR, Raman, solid-state NMR) and thermal analyses showed that the starting powder underwent slight physicochemical modifications, with a partial loss of water and local change in the HPO42- ion environment. The creation of an open porous structure, which is especially adapted for non-load bearing bone defects, was also observed. Moreover, the pellets obtained exhibited sufficient mechanical resistance allowing for manipulation, surgical placement and eventual cutting/reshaping in the operation room. Three-dimensional porous scaffolds of cold-sintered reactive ACP, fabricated through this low-energy, ultrafast consolidation process, show promise toward the development of highly bioactive and tailorable biomaterials for bone regeneration, also permitting combinations with various thermosensitive drugs.
Ratio of left ventricular outflow tract area to aortic annulus area and complete atrioventricular block after transcatheter aortic valve replacement for aortic stenosis
Shinnosuke Kikuchi, Yugo Minamimoto, Kensuke Matsushita, Tomoki Cho, Kengo Terasaka, Yohei Hanajima, Hidefumi Nakahashi, Masaomi Gohbara, Yuichiro Kimura, Shota Yasuda, Kozo Okada, Yasushi Matsuzawa, Noriaki Iwahashi, Masami Kosuge, Toshiaki Ebina, Olivier Morel, Patrick Ohlmann, Keiji Uchida, Kiyoshi Hibi
International Journal of Cardiology, 2024, 397, pp.131608. ⟨10.1016/j.ijcard.2023.131608⟩
Article dans une revuePromotion of cardiac microtissue assembly within G-CSF-enriched collagen I-cardiogel hybrid hydrogel
Hamid Khodayari, Saeed Khodayari, Malihe Rezaee, Siamak Rezaeiani, Mahmoud Alipour Choshali, Saiedeh Erfanian, Ahad Muhammadnejad, Fatemeh Nili, Yasaman Pourmehran, Reihaneh Pirjani, Sarah Rajabi, Naser Aghdami, Canan G Nebigil, Kai Wang, Habibollah Mahmoodzadeh, Sara Pahlavan
Regenerative Biomaterials, 2024, 11, ⟨10.1093/rb/rbae072⟩
Article dans une revueAbstractAbstract Tissue engineering as an interdisciplinary field of biomedical sciences has raised many hopes in the treatment of cardiovascular diseases as well as development of in vitro three-dimensional (3D) cardiac models. This study aimed to engineer a cardiac microtissue using a natural hybrid hydrogel enriched by granulocyte colony-stimulating factor (G-CSF), a bone marrow-derived growth factor. Cardiac ECM hydrogel (Cardiogel: CG) was mixed with collagen type I (ColI) to form the hybrid hydrogel, which was tested for mechanical and biological properties. Three cell types (cardiac progenitor cells, endothelial cells and cardiac fibroblasts) were co-cultured in the G-CSF-enriched hybrid hydrogel to form a 3D microtissue. ColI markedly improved the mechanical properties of CG in the hybrid form with a ratio of 1:1. The hybrid hydrogel demonstrated acceptable biocompatibility and improved retention of encapsulated human foreskin fibroblasts. Co-culture of three cell types in G-CSF enriched hybrid hydrogel, resulted in a faster 3D structure shaping and a well-cellularized microtissue with higher angiogenesis compared to growth factor-free hybrid hydrogel (control). Immunostaining confirmed the presence of CD31+ tube-like structures as well as vimentin+ cardiac fibroblasts and cTNT+ human pluripotent stem cells-derived cardiomyocytes. Bioinformatics analysis of signaling pathways related to the G-CSF receptor in cardiovascular lineage cells, identified target molecules. The in silico-identified STAT3, as one of the major molecules involved in G-CSF signaling of cardiac tissue, was upregulated in G-CSF compared to control. The G-CSF-enriched hybrid hydrogel could be a promising candidate for cardiac tissue engineering, as it facilitates tissue formation and angiogenesis.
Combination of Enamel Matrix Derivatives with Bone Graft vs Bone Graft Alone in the Treatment of Periodontal Intrabony and Furcation Defects: A Systematic Review and Meta-Analysis
Ibrahim Fidan, Julien Labreuche, Olivier Huck, Kevimy Agossa
Oral Health and Preventive Dentistry, 2024, 22, pp.655-663. ⟨10.3290/j.ohpd.b5871494⟩
Article dans une revueAbstractPurpose: To compare the clinical performance of the combination of enamel matrix derivatives and bone substitutes (EMD+BG) with bone substitutes (BG) alone in the surgical treatment of periodontal intrabony and furcation defects. Materials and Methods: Electronic databases (Medline, Embase and Web of Science) were searched for randomised controlled trials in humans that investigated the combination of EMD+BG vs BG alone in either intrabony or furcation defects with a minimal follow-up of 6 months. A random-effect meta-analysis was conducted according to the type of defect (intrabony or furcation defects) and the follow-up time (6 or ≥ 12 months). Results: From a total of 1583 entries, 9 randomised controlled clinical trials (RCTs) were retrieved and included in the qualitative and quantitative synthesis. All of them were included in the meta-analysis. The meta-analysis detected an additional clinical attachment level (CAL) gain in intrabony defects treated with EMD+BG compared to BG alone in studies with ≥ 12-month follow-up (mean difference = 0.67 mm, 95% CI [0.44 ; 0.90], p < 0.00001). No additional benefit was found in furcation defects in terms of CAL gain or probing depth (PD) reduction. Conclusion: The addition of EMD may improve the clinical outcomes of intrabony defects treated with bone substitutes. These findings may support the use of this combined therapy, particularly in large and non-contained defects.
Spray-dried ternary bioactive glass microspheres: Direct and indirect structural effects of copper-doping on acellular degradation behavior
Gabriele Vecchio, Vincent Darcos, Sylvain Le Grill, Fabien Brouillet, Yannick Coppel, Mathieu Duttine, Alessandro Pugliara, Christèle Combes, Jérémy Soulié
Acta Biomaterialia, 2024, 181, pp.453-468. ⟨10.1016/j.actbio.2024.05.003⟩
Article dans une revueAbstractSilicate-based bioactive glass nano/microspheres hold significant promise for bone substitution by facilitating osteointegration through the release of biologically active ions and the formation of a biomimetic apatite layer. Cu-doping enhances properties such as pro-angiogenic and antibacterial behavior. While sol-gel methods usually yield homogeneous spherical particles for pure silica or binary glasses, synthesizing poorly aggregated Cu-doped ternary glass nano/microparticles without a secondary CuO crystalline phase remains challenging. This article introduces an alternative method for fabricating Cu-doped ternary microparticles using sol-gel chemistry combined with spray-drying. The resulting microspheres exhibit well-defined, poorly aggregated particles with spherical shapes and diameters of a few microns. Copper primarily integrates into the microspheres as Cu$^0$ nanoparticles and as Cu$^{2+}$ within the amorphous network. This doping affects silica network connectivity, as calcium and phosphorus are preferentially distributed in the glass network (respectively as network modifiers and formers) or involved in amorphous calcium phosphate nano-domains depending on the doping rate. These differences affect the interaction with simulated body fluid. Network depolymerization, ion release (SiO$_4^{4-}$, Ca$^{2+}$), PO$_4^{3-}$, Cu$^{2+}$), and apatite nanocrystal layer formation are impacted, as well as copper release. The latter is mainly provided by the copper involved in the silica network and not from metal nanoparticles, most of which remain in the microspheres after interaction. This understanding holds promising implications for potential therapeutic applications, offering possibilities for both short-term and long-term delivery of a tunable copper dose.
Effects of Losartan on Patients Hospitalized for Acute Coronavirus Disease 2019: A Randomized Controlled Trial
Karen C. Tran, Pierre Asfar, Matthew Cheng, Julien Demiselle, Joel Singer, Terry Lee, David Sweet, John Boyd, Keith Walley, Greg Haljan, Omar Sharif, Guillaume Geri, Johann Auchabie, Jean-Pierre Quenot, Todd C. Lee, Jennifer Tsang, Ferhat Meziani, Francois Lamontagne, Vincent Dubée Dubée, Sigismond Lasocki, Daniel Ovakim, Gordon Wood, Alexis Turgeon, Yves Cohen, Eddy Lebas, Marine Goudelin, David Forrest, Alastair Teale, Jean-Paul Mira, Robert Fowler, Nick Daneman, Neill K.J. Adhikari, Marie Gousseff, Pierre Leroy, Gaetan Plantefeve, Patrick Rispal, Roxane Courtois, Brent Winston, Steve Reynolds, Peter Birks, Boris Bienvenu, Jean-Marc Tadie, Jean-Philippe Talarmin, Severine Ansart, James A. Russell
Clinical Infectious Diseases, 2024, 79, pp.615-625. ⟨10.1093/cid/ciae306⟩
Article dans une revueAbstractBackground. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) down-regulates angiotensin-converting enzyme 2, potentially increasing angiotensin II. We hypothesized that losartan compared to usual care decreases mortality and is safe in patients hospitalized with coronavirus disease 2019 (COVID-19). We aimed to evaluate the effect of losartan versus usual care on 28-day mortality in patients hospitalized for acute COVID-19. Methods. Eligibility criteria included adults admitted for acute COVID-19. Exclusion criteria were hypotension, hyperkalemia, acute kidney injury, and use of angiotensin receptor blockers (ARBs) or angiotensin-converting enzyme inhibitors within 7 days. Participants were randomized to losartan 25-100 mg/day orally for the hospital duration or 3 months or the control arm (usual care) in 29 hospitals in Canada and France. The primary outcome was 28-day mortality. Secondary outcomes were hospital mortality, organ support, and serious adverse events (SAEs). Results. The trial was stopped early because of a serious safety concern with losartan. In 341 patients, any SAE and hypotension were significantly higher in the losartan versus usual care groups (any SAE: 39.8% vs 27.2%, respectively, P = .01; hypotension: 30.4% vs 15.3%, respectively, P < .001) in both ward and intensive care patients. The 28-day mortality did not differ between losartan (6.5%) versus usual care (5.9%) (odds ratio, 1.11 [95% confidence interval, .47-2.64]; P = .81), nor did organ dysfunction or secondary outcomes. Conclusions. Caution is needed in deciding which patients to start or continue using ARBs in patients hospitalized with pneumonia to mitigate risk of hypotension, acute kidney injury, and other side effects. ARBs should not be added to care of patients hospitalized for acute COVID-19.
Impact of non-invasive oxygen reserve index versus standard SpO2 monitoring on peripheral oxygen saturation during endotracheal intubation in the intensive care unit: Protocol for the randomized controlled trial NESOI2
H. Hille, A. Le Thuaut, P. Asfar, Q. Quelven, E. Mercier, A. Le Meur, J. P. Quenot, V. Lemiale, G. Muller, M. Cour, A. Ferré, A. Bergé, A. Curtiaud, M. Touron, G. Plantefeve, J. C. Chakarian, J. D. Ricard, G. Colin, A. Orieux, P. Girardie, M. Jozwiak, M. Rouaud, C. Juhel, J. Reignier, J. B. Lascarrou
PLoS ONE, 2024, 19 (9), pp.e0307723. ⟨10.1371/journal.pone.0307723⟩
Article dans une revueAbstractIn critically ill patients, endotracheal intubation (ETI) is lifesaving but carries a high risk of adverse events, notably hypoxemia. Preoxygenation is performed before introducing the tube to increase the safe apnea time. Oxygenation is monitored by pulse oximeter measurement of peripheral oxygen saturation (SpO2). However, SpO2 is unreliable at the high oxygenation levels produced by preoxygenation and, in the event of desaturation, may not decrease sufficiently early to allow preventive measures. The oxygen reserve index (ORI) is a dimensionless parameter that can also be measured continuously by a fingertip monitor and reflects oxygenation in the moderate hyperoxia range. The ORI ranges from 0 to 1 when arterial oxygen saturation (PaO2) varies between 100 to 200 mmHg, as occurs during preoxygenation. No trial has assessed the potential effects of ORI monitoring to guide preoxygenation for ETI in unstable patients. We designed a multicenter, two-arm, parallel-group, randomized, superiority, open trial in 950 critically ill adults requiring ETI. The intervention consists in monitoring ORI values and using an ORI target for preoxygenation of at least 0.6 for at least 1 minute. In the control group, preoxygenation is guided by SpO2 values recorded by a standard pulse oximeter, according to the standard of care, the goal being to obtain 100% SpO2 during preoxygenation, which lasts at least 3 minutes. The standard-of-care ETI technique is used in both arms. Baseline parameters, rapid-sequence induction medications, ETI devices, and physiological data are recorded. The primary outcome is the lowest SpO2 value from laryngoscopy to 2 minutes after successful ETI. Secondary outcomes include cognitive function on day 28. Assuming a 10% standard deviation for the lowest SpO2 value in the control group, no missing data, and crossover of 5% of patients, with the bilateral alpha risk set at 0.05, including 950 patients will provide 85% power for detecting a 2% between-group absolute difference in the lowest SpO2 value. Should ORI monitoring with a target of ≥0.6 be found to increase the lowest SpO2 value during ETI, then this trial may change current practice regarding preoxygenation for ETI. Trial registration: Registered on ClinicalTrials.gov (NCT05867875) on April 27, 2023.
Clinician-Reported Physical and Cognitive Impairments After Convulsive Status Epilepticus: Post Hoc Study of a Randomized Controlled Trial
Gwenaëlle Jacq, Benoit Crepon, Matthieu Resche-Rigon, Maleka Schenck, Thomas Geeraerts, Ferhat Meziani, Bruno Megarbane, Cendrine Chaffaut, Alain Cariou, Stephane Legriel
Neurocritical Care, 2024, 40 (2), pp.495-505. ⟨10.1007/s12028-023-01758-6⟩
Article dans une revueAbstract© Springer Science+Business Media, LLC, part of Springer Nature and Neurocritical Care Society 2023.Background: Clinician-reported outcome (ClinRO) measures are emerging as useful contributors to assessments of treatment benefits. The objective of this study was to collect ClinRO measures of physical and cognitive impairments after convulsive status epilepticus (CSE) requiring intensive care unit admission. Methods: We conducted a post hoc analysis of the data from HYBERNATUS, a multicenter open-label controlled trial that randomized 270 critically ill patients with CSE requiring mechanical ventilation in 11 French intensive care units to therapeutic hypothermia (32u201334 °C for 24 h) plus standard care or standard care alone. We included all patients who attended a day 90 in-person neurologist visit with measurement of the functional independence measure (FIM) score (range from 18 [total assistance] to 126 [total independence]), Mini-Mental State Examination (MMSE) score (range 0u201330), and Glasgow outcome scale (GOS) score (1, death; 2, vegetative state; 3, severe disability; 4, moderate disability; and 5, mild or no disability). These three scores were compared across groups defined by several patient and CSE characteristics. Results: Of 229 patients with GOS scores ≥ 3 on day 90 (male sex, 58.2%; median age, 56 years [47u201367]), 67 (29%) attended an in-person neurologist visit. Twenty-nine (43%) patients had a previous history of epilepsy, and 16 (24%) patients had a primary brain insult. CSE was refractory in 22 (33%) patients. On day 90 after CSE onset, median FIM and MMSE scores were 121 (112u2013125) and 26.0 (24.0u201328.8), respectively. The GOS score was 3 in 16 (33.8%) patients, 4 in 9 (13.4%) patients, and 5 in 42 (62.7%) patients. Worse GOS score values were significantly associated with worse FIM and MMSE scores. Conclusions: In patients attending the in-person neurologist visit on day 90 after CSE onset, ClinRO measures indicated that the main impairments were cognitive. FIM and MMSE scores were associated with GOS scores. Further studies are needed to evaluate the possible impact of neuroprotective and rehabilitation strategies on disability and cognitive impairments in survivors of CSE. Clinical trial registration NCT01359332.
Oxygen therapy in acute hypoxemic respiratory failure: guidelines from the SRLF-SFMU consensus conference
Julie Helms, Pierre Catoire, Laure Abensur Vuillaume, Héloïse Bannelier, Delphine Douillet, Claire Dupuis, Laura Federici, Melissa Jezequel, Mathieu Jozwiak, Khaldoun Kuteifan, Guylaine Labro, Gwendoline Latournerie, Fabrice Michelet, Xavier Monnet, Romain Persichini, Fabien Polge, Dominique Savary, Amélie Vromant, Imane Adda, Sami Hraiech
Annals of Intensive Care, 2024, 14 (1), pp.140. ⟨10.1186/s13613-024-01367-2⟩
Article dans une revueAbstractIntroduction: Although largely used, the place of oxygen therapy and its devices in patients with acute hypoxemic respiratory failure (ARF) deserves to be clarified. The French Intensive Care Society (Société de Réanimation de Langue Française, SRLF) and the French Emergency Medicine Society (Société Française de Médecine d'Urgence, SFMU) organized a consensus conference on oxygen therapy in ARF (excluding acute cardiogenic pulmonary oedema and hypercapnic exacerbation of chronic obstructive diseases) in December 2023. Methods: A committee without any conflict of interest (CoI) with the subject defined 7 generic questions and drew up a list of sub questions according to the population, intervention, comparison and outcomes (PICO) model. An independent work group reviewed the literature using predefined keywords. The quality of the data was assessed using the GRADE methodology. Fifteen experts in the field from both societies proposed their own answers in a public session and answered questions from the jury (a panel of 16 critical-care and emergency medicine physicians, nurses and physiotherapists without any CoI) and the public. The jury then met alone for 48 h to write its recommendations. Results: The jury provided 22 statements answering 11 questions: in patients with ARF (1) What are the criteria for initiating oxygen therapy? (2) What are the targets of oxygen saturation? (3) What is the role of blood gas analysis? (4) When should an arterial catheter be inserted? (5) Should standard oxygen therapy, high-flow nasal cannula oxygen therapy (HFNC) or continuous positive airway pressure (CPAP) be preferred? (6) What are the indications for non-invasive ventilation (NIV)? (7) What are the indications for invasive mechanical ventilation? (8) Should awake prone position be used? (9) What is the role of physiotherapy? (10) Which criteria necessarily lead to ICU admission? (11) Which oxygenation device should be preferred for patients for whom a do-not-intubate decision has been made? Conclusion: These recommendations should optimize the use of oxygen during ARF.
Potential of Anthocyanin-rich Products to Prevent and Improve Endothelial Function and Senescence: Focus on Anthocyanins
Cyril Auger, Hira Muzammel, Ibrahima Diouf, Valérie Schini-Kerth
Journal of Agricultural and Food Chemistry, 2024, 72 (50), pp.27590-27618. ⟨10.1021/acs.jafc.4c04727⟩
Article dans une revueAbstractEndothelial dysfunction is a pivotal early event in the development of major cardiovascular diseases including hypertension, atherosclerosis, diabetes, and aging. The alteration of the endothelial function is often triggered by an imbalance between the endothelial formation of vasoprotective factors, including nitric oxide (NO) and endothelium-dependent hyperpolarization (EDH), and vasocontracting factors, such as arachidonic acid-derived mediators generated by cyclooxygenases, and an increased level of oxidative stress. Recently, endothelial senescence was reported to be an early trigger of endothelial dysfunction. Preclinical studies indicate that polyphenol-rich food, including anthocyanin-rich products, can activate pathways promoting an increased formation of vasoprotective factors and can prevent the induction of endothelial dysfunction in endothelial cells and isolated blood vessels. Similarly, intake of anthocyanin-rich products has been associated with the prevention and/or the improvement of an endothelial dysfunction in several experimental models of cardiovascular diseases, including physiological aging. Moreover, clinical data indicate that polyphenol-rich and anthocyanin-rich products can improve endothelial function and vascular health in humans with cardiovascular diseases. The present review will discuss both experimental and clinical evidence indicating that several polyphenol-rich foods and natural products, and especially anthocyanin-rich products, can promote endothelial and vascular health, as well as the underlying mechanisms.
La parodontite : un risque sous-estimé des maladies cardiovasculaires
Adrian Brun, Catherine Petit, Olivier Huck, Philippe Bouchard, Maria Clotilde Carra, Marjolaine Gosset
Médecine/Sciences, 2024, 40 (1), pp.35-41. ⟨10.1051/medsci/2023193⟩
Article dans une revueAbstractLes études épidémiologiques identifient la parodontite, maladie inflammatoire chronique des tissus de soutien des dents, comme un facteur contribuant au risque cardiovasculaire. Bien que la nature de l’association entre parodontite et maladies cardio-vasculaires (MCV) reste à définir (causalité ou corrélation), l’inflammation systémique de bas grade et les bactériémies chroniques qui sont associées aux parodontites apparaissent impliquées dans le développement de l’athérosclérose et des maladies cardio-vasculaires associées. Le traitement parodontal semble contribuer à l’amélioration des paramètres de la santé cardiovasculaire. Dès lors, une approche de prévention bidirectionnelle, impliquant à la fois la gestion de la parodontite et des facteurs de risque cardiovasculaire, pourrait permettre une réduction de la morbidité et de la mortalité liées aux MCV.
Corneal Toxicity in Patients Treated by BELANTAMAB MAFODOTIN: How to Improve and Facilitate Patients Follow-Up Using Refractive Shift?
Jason Chauvier, Marie-Caroline Trone, Philippe Gain, Edouard Ollier, Pierre-Yves Robert, Louis Arnould, Tristan Bourcier, Myriam Cassagne, Jean Maalouf, Arnaud Martel, Louis Hoffart, Antoine Rousseau, Thibaud Mathis, Marc Labetoulle
Journal of Ocular Pharmacology and Therapeutics, 2024, 40 (7), pp.410-418. ⟨10.1089/jop.2024.0023⟩
Article dans une revueAbstractPurpose: Multiple myeloma (MM) is the second most common neoplastic blood disease worldwide. Belantamab mafodotin is a new antibody conjugate anti-B-cell maturation antigen effective against refractory myelomas. It induces intracorneal microcysts leading to refractive fluctuations. The aim of this study is to assess the value of monitoring refractive fluctuations based on the location of microcystic-like epithelial changes (MECs) to facilitate patient follow-up. Methods: This observational and multicentric study was conducted using data collected from several French centers contacted through secure email through a standardized data collection table. Results: The fluctuation of objective refraction in spherical equivalent confirms a significant myopic shift from peripheral to central forms. A decrease in the best-corrected visual acuity (BCVA), an increase in keratometry, and an increase in central epithelial pachymetry have also been observed when MECs migrate toward the center. Conclusion: The myopization found in our study in patients with central and paracentral MECs is consistent with current literature. Fluctuations in BCVA, keratometry, and epithelial pachymetry are also consistent. This study is the first real-world study and highlights heterogeneity in follow-up, emphasizing the need to establish multidisciplinary follow-up strategies. The analysis of refractive fluctuations appears to be a reproducible and noninvasive screening method that could facilitate patient follow-up without the need for consultation focused on corneal diseases.
COVID-19 promotes endothelial dysfunction and thrombogenicity: role of proinflammatory cytokines/SGLT2 prooxidant pathway
Ali Mroueh, Walaa Fakih, Adrien Carmona, Antonin Trimaille, Kensuke Matsushita, Benjamin Marchandot, Abdul Wahid Qureshi, Dal-Seong Gong, Cyril Auger, Laurent Sattler, Antje Reydel, Sébastien Hess, Walid Oulehri, Olivier Vollmer, Jean-Marc Lessinger, Nicolas Meyer, Michael Paul Pieper, Laurence Jesel, Magnus Bäck, Valerie Schini-Kerth, Olivier Morel
Journal of Thrombosis and Haemostasis, 2024, 22 (1), pp.286-299. ⟨10.1016/j.jtha.2023.09.022⟩
Article dans une revueMEESSI-AHF score to estimate short-term prognosis of acute heart failure patients in the Emergency Department: a prospective and multicenter study
Mathieu Oberlin, Guillaume Buis, Karine Alamé, Mikaël Martinez, Marie Paule Bitard, Lise Berard, Xavier Losset, Frederic Balen, Bruno Lehodey, Omide Taheri, Quentin Delannoy, Sabrina Kepka, Duc-Minh Tran, Pascal Bilbault, Julien Godet, Pierrick Le Borgne
European Journal of Emergency Medicine, 2023, 30 (6), pp.424-431. ⟨10.1097/mej.0000000000001064⟩
Article dans une revueAbstractBackground: The assessment of acute heart failure (AHF) prognosis is primordial in emergency setting. Although AHF management is exhaustively codified using mortality predictors, there is currently no recommended scoring system for assessing prognosis. The European Society of Cardiology (ESC) recommends a comprehensive assessment of global AHF prognosis, considering in-hospital mortality, early rehospitalization rates and the length of hospital stay. Objective: We aimed to prospectively evaluate the performance of the Multiple Estimation of risk based on the Emergency department Spanish Score In patients with AHF (MEESSI-AHF) score in estimating short prognosis according to the ESC guidelines. Design, settings and patients: A multicenter study was conducted between November 2020, and June 2021. Adult patients who presented to eleven French hospitals for AHF were prospectively included. Outcome measures and analysis: According to MEESSI-AHF score, patients were stratified in four categories corresponding to mortality risk: low-, intermediate-, high- and very high-risk groups. The primary outcome was the number of days alive and out of the hospital during the 30-day period following admission to the Emergency Department (ED). Results: In total, 390 patients were included. The number of days alive and out of the hospital decreased significatively with increasing MEESSI-AHF risk groups, ranging from 21.2 days (20.3–22.3 days) for the low-risk, 20 days (19.3–20.5 days) for intermediate risk,18.6 days (17.6–19.6 days) for the high-risk and 17.9 days (16.9–18.9 days) very high-risk category. Conclusion: Among patients admitted to ED for an episode of AHF, the MEESSI-AHF score estimates with good performance the number of days alive and out of the hospital.
Insulin protein abundance matters in human pancreatic islets homeostasis
Julie Vion-Chambrial, Karim Bouzakri
Acta Physiologica, 2023, 240 (2), ⟨10.1111/apha.14076⟩
Article dans une revueEffect of Noninvasive Airway Management of Comatose Patients With Acute Poisoning
Yonathan Freund, Damien Viglino, Marine Cachanado, Clémentine Cassard, Emmanuel Montassier, Bénedicte Douay, Jérémy Guenezan, Pierrick Le Borgne, Youri Yordanov, Armelle Severin, Mélanie Roussel, Matthieu Daniel, Adrien Marteau, Nicolas Peschanski, Dorian Teissandier, Richard Macrez, Julia Morere, Tahar Chouihed, Damien Roux, Frédéric Adnet, Ben Bloom, Anthony Chauvin, Tabassome Simon
JAMA Cardiology, 2023, 330 (23), pp.2267-2274. ⟨10.1001/jama.2023.24391⟩
Article dans une revueAbstractImportance : Tracheal intubation is recommended for coma patients and those with severe brain injury, but its use in patients with decreased levels of consciousness from acute poisoning is uncertain. Objective : To determine the effect of intubation withholding vs routine practice on clinical outcomes of comatose patients with acute poisoning and a Glasgow Coma Scale score less than 9. Design, Setting, and Participants : This was a multicenter, randomized trial conducted in 20 emergency departments and 1 intensive care unit (ICU) that included comatose patients with suspected acute poisoning and a Glasgow Coma Scale score less than 9 in France between May 16, 2021, and April 12, 2023, and followed up until May 12, 2023. Intervention : Patients were randomized to undergo conservative airway strategy of intubation withholding vs routine practice. Main Outcomes and Measures : The primary outcome was a hierarchical composite end point of in-hospital death, length of ICU stay, and length of hospital stay. Key secondary outcomes included adverse events resulting from intubation as well as pneumonia within 48 hours. Results : Among the 225 included patients (mean age, 33 years; 38% female), 116 were in the intervention group and 109 in the control group, with respective proportions of intubations of 16% and 58%. No patients died during the in-hospital stay. There was a significant clinical benefit for the primary end point in the intervention group, with a win ratio of 1.85 (95% CI, 1.33 to 2.58). In the intervention group, there was a lower proportion with any adverse event (6% vs 14.7%; absolute risk difference, 8.6% [95% CI, −16.6% to −0.7%]) compared with the control group, and pneumonia occurred in 8 (6.9%) and 16 (14.7%) patients, respectively (absolute risk difference, −7.8% [95% CI, −15.9% to 0.3%]). Conclusions and Relevance : Among comatose patients with suspected acute poisoning, a conservative strategy of withholding intubation was associated with a greater clinical benefit for the composite end point of in-hospital death, length of ICU stay, and length of hospital stay. Trial Registration : ClinicalTrials.gov Identifier: NCT04653597
Hypothermia vs Normothermia in Patients With Cardiac Arrest and Nonshockable Rhythm
Fabio Silvio Taccone, Josef Dankiewicz, Alain Cariou, Gisela Lilja, Pierre Asfar, Jan Belohlavek, Thierry Boulain, Gwenhael Colin, Tobias Cronberg, Jean-Pierre Frat, Hans Friberg, Anders Grejs, Guillaume Grillet, Patrick Girardie, Matthias Haenggi, Jan Hovdenes, Janus Christian Jakobsen, Helena Levin, Hamid Merdji, Hassane Njimi, Paolo Pelosi, Christian Rylander, Manoj Saxena, Matt Thomas, Paul Young, Matt Wise, Niklas Nielsen, Jean-Baptiste Lascarrou
JAMA neurology, 2023, 14 (1), pp.33. ⟨10.1001/jamaneurol.2023.4820⟩
Article dans une revueAbstract<b>Importance:</b> International guidelines recommend body temperature control below 37.8 °C in unconscious patients with out-of-hospital cardiac arrest (OHCA); however, a target temperature of 33 °C might lead to better outcomes when the initial rhythm is nonshockable. <b>Objective:</b> To assess whether hypothermia at 33 °C increases survival and improves function when compared with controlled normothermia in unconscious adults resuscitated from OHCA with initial nonshockable rhythm. <b>Data Sources:</b> Individual patient data meta-analysis of 2 multicenter, randomized clinical trials (Targeted Normothermia after Out-of-Hospital Cardiac Arrest [TTM2; NCT02908308] and HYPERION [NCT01994772]) with blinded outcome assessors. Unconscious patients with OHCA and an initial nonshockable rhythm were eligible for the final analysis. <b>Study Selection:</b> The study cohorts had similar inclusion and exclusion criteria. Patients were randomized to hypothermia (target temperature 33 °C) or normothermia (target temperature 36.5 to 37.7 °C), according to different study protocols, for at least 24 hours. Additional analyses of mortality and unfavorable functional outcome were performed according to age, sex, initial rhythm, presence or absence of shock on admission, time to return of spontaneous circulation, lactate levels on admission, and the cardiac arrest hospital prognosis score. <b>Data Extraction and Synthesis:</b> Only patients who experienced OHCA and had a nonshockable rhythm with all causes of cardiac arrest were included. Variables from the 2 studies were available from the original data sets and pooled into a unique database and analyzed. Clinical outcomes were harmonized into a single file, which was checked for accuracy of numbers, distributions, and categories. The last day of follow-up from arrest was recorded for each patient. Adjustment for primary outcome and functional outcome was performed using age, gender, time to return of spontaneous circulation, and bystander cardiopulmonary resuscitation. <b>Main Outcomes and Measures:</b> The primary outcome was mortality at 3 months; secondary outcomes included unfavorable functional outcome at 3 to 6 months, defined as a Cerebral Performance Category score of 3 to 5. <b>Results:</b> A total of 912 patients were included, 490 from the TTM2 trial and 422 from the HYPERION trial. Of those, 442 had been assigned to hypothermia (48.4%; mean age, 65.5 years; 287 males [64.9%]) and 470 to normothermia (51.6%; mean age, 65.6 years; 327 males [69.6%]); 571 patients had a first monitored rhythm of asystole (62.6%) and 503 a presumed noncardiac cause of arrest (55.2%). At 3 months, 354 of 442 patients in the hypothermia group (80.1%) and 386 of 470 patients in the normothermia group (82.1%) had died (relative risk [RR] with hypothermia, 1.04; 95% CI, 0.89-1.20; P = .63). On the last day of follow-up, 386 of 429 in the hypothermia group (90.0%) and 413 of 463 in the normothermia group (89.2%) had an unfavorable functional outcome (RR with hypothermia, 0.99; 95% CI, 0.87-1.15; P = .97). The association of hypothermia with death and functional outcome was consistent across the prespecified subgroups. <b>Conclusions and Relevance:</b> In this individual patient data meta-analysis, including unconscious survivors from OHCA with an initial nonshockable rhythm, hypothermia at 33 °C did not significantly improve survival or functional outcome.
Accuracy of Age Estimation Using Three Dental Age Estimation Methods in a Young, Large, and Multiethnic Patient Sample
Claire Willmann, Gabriel Fernandez de Grado, Céline Kolb, Jean-Sébastien Raul, Anne-Marie Musset, Catherine-Isabelle Gros, Damien Offner
Dentistry Journal, 2023, 11 (12), pp.288. ⟨10.3390/dj11120288⟩
Article dans une revueAbstractEuropean countries have become host countries for migrants and unaccompanied minors. However, many migrants arrive without identity documents. Many methods exist to estimate age; among them, several methods using dental age have been proposed. Our objective was to evaluate the accuracy of biological age determination in a multiethnic sample using dental age estimated using three methods: Nolla, Demirjian, and the London Atlas. Orthopantomograms collected for 324 patients of various ethnicities aged from 4 to 20 years old were included. Then, for each orthopantomogram, a blind trained examiner used the three methods of age estimation. For each method, the estimated mean age was greater than the real mean age (p < 0.0001). The accuracy after 18 years old with a 1-year margin was under 50%. Demirjian's method gave a less accurate estimated age than Nolla's method (p < 0.0001) or the London Atlas (p < 0.001). The most accurate methods were those of Nolla and the London Atlas, with average absolute deviations of 1.3 and 1.2 years, respectively. Demirjian's method was much less accurate, with a deviation of around 2 years. The evaluated methods are unable to provide reliable information to determine if an individual is a minor.
Custom-made meniscus biofabrication
Hélène Vignes, Rana Smaida, Guillaume Conzatti, Guoqiang Hua, Nadia Benkirane-Jessel
Trends in Biotechnology, 2023, 41 (12), pp.1467-1470. ⟨10.1016/j.tibtech.2023.06.003⟩
Article dans une revueAbstractReconstructing the meniscus is not currently possible due to its intricate and heterogeneous structure. In this forum, we first discuss the shortcomings of current clinical strategies in meniscus repair. Then, we describe a new promising cell-based, ink-free 3D biofabrication technology to produce tailor-made large-scale functional menisci.
The frequency of medial meniscal repairs in stable knees during one year of arthroscopic activity (2021–2022) – comparison with a retrospective study (prior to 2017)
Marie Laure Louis, Henri Favreau, Gaelle Maroteau, Kevin Benad, César Praz, Olivier Carnessechi, Sammy Badr, Teddy Trouillez, Djebara Az-Eddine, Simon Pelletier, Benjamin Freychet, Vincent Pineau, Sophie Putman
Orthopaedics & Traumatology: Surgery & Research, 2023, 109 (8), pp.103676. ⟨10.1016/j.otsr.2023.103676⟩
Article dans une revueDisseminated intravascular coagulation is strongly associated with severe acute kidney injury in patients with septic shock
Julie Helms, Hamid Merdji, Sébastien Loewert, François Séverac, Alexandra Monnier, Julian Kaurin, Anais Curtiaud, Ferhat Meziani, Julien Demiselle
Annals of Intensive Care, 2023, 13 (1), pp.119. ⟨10.1186/s13613-023-01216-8⟩
Article dans une revueAbstractBackground: Disseminated intravascular coagulation (DIC) worsens the prognosis of septic shock and contributes to multiple organ failure. To date, no data linking DIC and acute kidney injury (AKI) occurrence, severity, and evolution in this setting are available. We aimed at analyzing the association between AKI occurrence, severity and evolution in patients with septic shock-induced DIC. In a prospective monocentric cohort study, consecutive patients, 18 years and older, admitted in the ICU of Strasbourg University Hospital in the setting of systemic hypotension requiring vasopressor related to an infection, without history of terminal chronic kidney disease were eligible. AKI was defined according to the KDIGO classification. DIC diagnosis was based on the International Society on Thrombosis and Haemostasis (ISTH) score. Evolution of AKI was evaluated through the composite endpoint of major adverse kidney events. Only patients with DIC that occurred before or at the time of AKI diagnosis were considered. Univariate and multivariate analysis were performed to determine factors associated with renal outcomes. Results: 350 patients were included, of whom 129 experienced DIC. Patients with DIC were more seriously ill (median SAPS II 64 vs. 56, p < 0.001), and had higher 28-day mortality (43.3% vs. 26.2%, p < 0.001). AKI was more frequent in patients with DIC (86.8% vs. 74.2%, p < 0.005), particularly for the more severe stage of AKI [KDIGO 3 in 58.1% of patients with DIC vs. 30.8% of patients without DIC, p < 0.001, AKI requiring renal replacement therapy (RRT) in 47.3% of patients with DIC vs. 21.3% of patients without DIC, p < 0.001]. After adjustment for confounding factors, DIC occurrence remained associated with the risk of having the more severe stage of AKI with an odds ratio (OR) of 2.74 [IC 95% (1.53-4.91), p < 0.001], and with the risk of requiring RRT during the ICU stay [OR 2.82 (1.53-5.2), p < 0.001]. Conclusion: DIC appears to be strongly associated with the risk of developing the more severe form of AKI (stage 3 of the KDIGO classification, RRT requirement), even after adjustment for severity and other relevant factors.
La santé orale, un enjeu de santé publique en 2023 – Réflexions et actions de l’ASPBD
Fabien Cohen, Jérémie Bazart, Christiane Brun, Céline Clément, Jean-Paul Espié, Annabelle Tenenbaum, Anne-Marie Musset
Santé Publique, 2023, 35 (HS1), pp.153-155. ⟨10.3917/spub.hs1.2023.0153⟩
Article dans une revueAbstractLa première Journée de santé publique dentaire, en 2001, a été non seulement le point de départ de la création de l’association des Acteurs de la santé publique bucco-dentaire (ASPBD), mais aussi celui de l’identification en France de cette spécialité, alors qu’elle était déjà reconnue comme telle par l’Association dentaire américaine dès 1950. L’ASPBD organise, depuis annuellement une journée nationale de santé publique bucco-dentaire. L’ASPBD rassemble la grande majorité des odontologistes, enseignants-chercheurs hospitalo-universitaires français, mais aussi les autres hospitalo-universitaires francophones. Nous oeuvrons tout au long de l’année à faire travailler ensemble le dentaire et le non-dentaire, principalement le monde institutionnel et associatif avec les usagers, les libéraux et les salariés, l’Organisation mondiale de la santé et la Société française de santé publique. À l’image du binôme qui préside chacune de nos journées depuis vingt-deux ans. Notre association a pour vocation de rassembler tous les acteurs concernés pour oeuvrer à l’intégration de la santé orale dans toutes les politiques de santé et dispositifs de promotion de la santé et de prévention. Nous pensons qu’il est indispensable de former à la santé orale tant les personnels médicaux et paramédicaux que ceux de l’éducation et de l’animation. De même, nous agissons pour que la prévention s’organise à l’échelon territorial, au plus près des populations en fonction de leurs besoins. C’est le sens de notre participation active à la lutte contre les inégalités sociales et territoriales de santé, la santé orale étant un marqueur fort d’inégalités sociales de santé.Article disponible en ligne à l'adresse
MiniMed TM 780G Advanced Hybrid Closed-Loop System Study in Pregnant Women with Type 1 Diabetes
Clara Guibert, Lamia Amoura, Luc Rakotoarisoa, Francoise Plat, Emmanuel Sonnet, Sandrine Lablanche, Clémence Tréglia, Elisa Sarde, Viviane Leca, Frédérique Rimareix, Vincent Melki, Franciane Baucher, Bouchra Betari, Laurent Meyer, Laurence Kessler
Diabetes Technology and Therapeutics, 2023, 25 (12), pp.893-901. ⟨10.1089/dia.2023.0267⟩
Article dans une revueAbstractBackground: Evaluate the impact of the MiniMed™ 780G advanced hybrid closed-loop (AHCL) system on the glucose profile of pregnant women with type 1 diabetes (T1D) and maternal–neonatal complications. Methods: From April 2021 to September 2022, pregnant women with T1D treated with the AHCL system were included in an observational multicenter retrospective study. Continuous glucose monitoring parameters were analyzed monthly during pregnancy as well as maternal–neonatal complications. Results: Thirteen pregnant women, including a twin pregnancy (age: 33 ± 3 years, hemoglobin A1c [HbA1c]: 7.3% ± 0.7%, insulin doses: 0.72 ± 0.21 U/kg/day) were analyzed. At delivery, gestational age was 37 ± 2 weeks. During first 2 weeks of pregnancy, time in range (TIR, 63–140 mg/dL) was 46% (34–55) and increased to 54% (51–59) (P < 0.01), 64% (48–68) (P < 0.01), and 66% (60–70) (P < 0.001) during the first, second, and third trimester, respectively. During the night, TIR (63–140 mg/dL) was >70% throughout pregnancy. Time below the range <63 mg/dL increased from 0.5% (0–2) to 1.3% (0.7–2.2), 2% (1.2–3.5) (P < 0.05), and 1.3% (1.31–3) (P < 0.05) during the first, second, and third trimester, respectively. At delivery, insulin doses increased to 0.89 ± 0.35 IU/kg/day (P < 0.01), and HbA1c decreased to 6.4% ± 0.6% (P = 0.005). The reported carbohydrate amount increased from 167 ± 363 g/d during early pregnancy to 243 ± 106 g/d (P < 0.01) at delivery. The birthweight was 3134 ± 711 g, with 5/14 macrosomia and 2/14 neonatal hypoglycemia. Moreover, 5/13 patients had a preeclampsia and 9/13 a cesarean section, including three cases of scarred uterus. The Clinical Trial Registration number is: CE-2022-55. Conclusion: The AHCL system provided good glucose control during pregnancy and recommendation targets were reached during the nocturnal period only. The maternal and neonatal complications remained high.
Delineating the interplay between oncogenic pathways and immunity in anaplastic Wilms tumors
Xiaoping Su, Xiaofan Lu, Sehrish Khan Bazai, Linda Dainese, Arnauld Verschuur, Benoit Dumont, Roger Mouawad, Li Xu, Wenxuan Cheng, Fangrong Yan, Sabine Irtan, Veronique Lindner, Catherine Paillard, Yves Le Bouc, Aurore Coulomb, Gabriel Malouf
Nature Communications, 2023, 14 (1), pp.7884. ⟨10.1038/s41467-023-43290-3⟩
Article dans une revueAbstractWilms tumors are highly curable in up to 90% of cases with a combination of surgery and radio-chemotherapy, but treatment-resistant types such as diffuse anaplastic Wilms tumors pose significant therapeutic challenges. Our multi-omics profiling unveils a distinct desert-like diffuse anaplastic Wilms tumor subtype marked by immune/stromal cell depletion, TP53 alterations, and cGAS-STING pathway downregulation, accounting for one-third of all diffuse anaplastic cases. This subtype, also characterized by reduced CD8 and CD3 infiltration and active oncogenic pathways involving histone deacetylase and DNA repair, correlates with poor clinical outcomes. These oncogenic pathways are found to be conserved in anaplastic Wilms tumor cell models. We identify histone deacetylase and/or WEE1 inhibitors as potential therapeutic vulnerabilities in these tumors, which might also restore tumor immunogenicity and potentially enhance the effects of immunotherapy. These insights offer a foundation for predicting outcomes and personalizing treatment strategies for aggressive pediatric Wilms tumors, tailored to individual immunological landscapes.
Inhaled Amikacin to Prevent Ventilator-Associated Pneumonia
Stephan Ehrmann, François Barbier, Julien Demiselle, Jean-Pierre Quenot, Jean-Etienne Herbrecht, Damien Roux, Jean-Claude Lacherade, Mickaël Landais, Philippe Seguin, David Schnell, Anne Veinstein, Philippe Gouin, Sigismond Lasocki, Qin Lu, Gaëtan Beduneau, Martine Ferrandiere, Gaëtan Plantefève, Claire Dahyot-Fizelier, Nader Chebib, Emmanuelle Mercier, Nathalie Heuzé-Vourc’h, Renaud Respaud, Nicolas Grégoire, Denis Garot, Mai-Anh Nay, Ferhat Meziani, Pascal Andreu, Raphaël Clere-Jehl, Noémie Zucman, Marie-Ange Azaïs, Marjorie Saint-Martin, Charlotte Salmon Gandonnière, Dalila Benzekri, Hamid Merdji, Elsa Tavernier
New England Journal of Medicine, 2023, 389 (22), pp.2052-2062. ⟨10.1056/NEJMoa2310307⟩
Article dans une revueAbstractBackground: Whether preventive inhaled antibiotics may reduce the incidence of ventilator-associated pneumonia is unclear. Methods: In this investigator-initiated, multicenter, double-blind, randomized, controlled, superiority trial, we assigned critically ill adults who had been undergoing invasive mechanical ventilation for at least 72 hours to receive inhaled amikacin at a dose of 20 mg per kilogram of ideal body weight once daily or to receive placebo for 3 days. The primary outcome was a first episode of ventilator-associated pneumonia during 28 days of follow-up. Safety was assessed. Results: A total of 850 patients underwent randomization, and 847 were included in the analyses (417 assigned to the amikacin group and 430 to the placebo group). All three daily nebulizations were received by 337 patients (81%) in the amikacin group and 355 patients (83%) in the placebo group. At 28 days, ventilator-associated pneumonia had developed in 62 patients (15%) in the amikacin group and in 95 patients (22%) in the placebo group (difference in restricted mean survival time to ventilator-associated pneumonia, 1.5 days; 95% confidence interval [CI], 0.6 to 2.5; P = 0.004). An infection-related ventilator-associated complication occurred in 74 patients (18%) in the amikacin group and in 111 patients (26%) in the placebo group (hazard ratio, 0.66; 95% CI, 0.50 to 0.89). Trial-related serious adverse effects were seen in 7 patients (1.7%) in the amikacin group and in 4 patients (0.9%) in the placebo group. Conclusions: Among patients who had undergone mechanical ventilation for at least 3 days, a subsequent 3-day course of inhaled amikacin reduced the burden of ventilator-associated pneumonia during 28 days of follow-up. (Funded by the French Ministry of Health; AMIKINHAL ClinicalTrials.gov number, NCT03149640; EUDRA Clinical Trials number, 2016-001054-17.).
Exploring elevated D-dimer in ECMO patients: a path to understanding
Julie Helms, Ferhat Meziani, Eduardo Angles-Cano
Intensive Care Medicine, 2023, 49 (12), pp.1569-1570. ⟨10.1007/s00134-023-07269-4⟩
Article dans une revueOral management of patients treated with denosumab for giant cell tumor of bone: A retrospective study at the University Hospitals of Strasbourg
Pierre Klienkoff, Noëlle Weingertner, Jean-Emmanuel Kurtz, Fabien Bornert
Oral Oncology Reports, 2023, 8, pp.100117. ⟨10.1016/j.oor.2023.100117⟩
Article dans une revueAbstractObjectives: Giant cell tumor of bone (GCTB) is defined as a rare intermediate-grade mesenchymal tumor. The firstline treatment was surgery but since the 2010s, denosumab is a medical therapeutic option that can stop progression of GCTBs with a high efficiency. Osteochimionecrosis of the jaw (ONJ) is a well-documented oral complication associated to denosumab implying careful oro-dental follow-up. So far, GCTB patients constitute a particular subgroup of denosumab-treated patients for whom very few studies about orodental care are described. Materials and methods: All patients diagnosed with GCTB and treated by denosumab therapy and who had orodental follow-up were included. Nine patients received denosumab as adjuvant and/or neoadjuvant treatment of surgery and one patient received denosumab as an exclusive therapy. Denosumab was temporary stopped in case of a serious adverse event like ONJ. Results: Of the 10 patients enrolled in this study, 8 started denosumab after undergoing one or more GCTB resection surgeries, and 1 patient was started on denosumab early on because surgery was considered too harmful. Only one patient benefited from denosumab treatment without tumor resection. All patients except one received an oral examination prior to initiation of denosumab treatment, the mean DMFT index was 9.8 and 4 patients had a poor periodontal status. In 5 of our 10 patients, denosumab therapy have been disturbed in order to manage one ONJ and 7 tooth extraction. Conclusion: Oro-dental status can strongly influence denosumab therapy in GCTB patients that’s why a close collaboration is required between oncologist and oral surgeon.
The “new normal” of hygiene measures at the end of the COVID-19 epidemic: a survey among French dentists
Charles Broyer, Gabriel Fernandez de Grado, Damien Offner
BMC Health Services Research, 2023, 23 (1), pp.1199. ⟨10.1186/s12913-023-10167-6⟩
Article dans une revueAbstractObjectives: The COVID-19 epidemic upset the standards in terms of hygiene and protection in the dental office, bringing additional precautions for dentists. The objective of our study was to draw the "new normal" of hygiene measures at the end of the COVID-19 epidemic. Materials and methods: A self-administered questionnaire about transitional recommendations for oral care in the context of the COVID-19 epidemic was published online in private groups dedicated to French dentists. Results: The 246 respondents understood the reasons behind those recommendations, since 10 out of 11 measures reached a mean score greater than 2.5 on a 0 (not at all) to 4 (absolutely) scale when it came to determining whether the measure made the practitioner feel safe and ensured patient safety. Besides, more of the respondents intended to maintain the measures than they were to apply them before the epidemic. Conclusions: The COVID-19 epidemic reshaped the relationship to hygiene and protection measures in the context of dental practices. The "new normal" of hygiene measures at the end of the COVID-19 epidemic will probably involve more protective measures than before. Clinical relevance: These results constitute interesting avenues for public health deliberation, which would make it possible to best adapt future health recommendations in order to define the "new normal" of hygiene measures in dental practices at the end of the COVID-19 epidemic. Therefore, it could have an impact on all practitioners in their clinical activities.
Management of a rare mandibular giant cell tumor of bone by neoadjuvant denosumab therapy and surgery
Pierre Klienkoff, Noëlle Weingertner, Lucas Geyer, Catherine-Isabelle Gros, Jean-Emmanuel Kurtz, Fabien Bornert
International Journal of Surgery Case Reports, 2023, 112, pp.108980. ⟨10.1016/j.ijscr.2023.108980⟩
Article dans une revueAbstractIntroduction: Giant cell tumor of bone (GCTB) is a very rare tumor encountered in the jaws and its histology is quite similar to the more common giant cell granuloma of the jaws (GCGJ). These two entities can be easily confused in maxillofacial region. They are classically managed surgically, but in some localizations and in specific medical-surgical contexts, neoadjuvant therapy with denosumab may be indicated. This report tends to reinforce existing evidence in favor of the use of a neoadjuvant approach, particularly for localization of GCTB in the orofacial region. Presentation of case: This is a 57-year-old female patient, an alcoholic smoker, in whom a voluminous mandibular radiolucent lesion was discovered during a routine X-ray by her dentist. After medical imaging assessment and incisional biopsy, diagnosis of GCTB was established. A neoadjuvant denosumab therapy was proposed first followed by a secondary surgical curettage. After 4 years' follow-up, complete healing was observed with no recurrence of the lesion. Discussion: Surgical management of aggressive GCTB is risky particularly in localizations involving the sacrum, spine or craniofacial skeleton with a high residual recurrence rate. The use of denosumab to stop tumor progression and facilitate secondary excision surgery is a recent approach that is now well documented in the literature showing promising results with a low rate of side effects. Conclusion: This case of mandibular GCTB is to our knowledge the unique case described in this localization and treated by denosumab neoadjuvant therapy followed by surgery with a 4-year follow-up showing a complete healing.
Severe pre-capillary pulmonary hypertension associated with kyphoscoliosis: Description of 4 cases
Guillaume Martin, Matthieu Canuet, Mohamed Rahli, Armelle Schuller, Irina Enache, Romain Kessler, Marianne Riou
Respiratory Medicine and Research, 2023, 84, pp.101034. ⟨10.1016/j.resmer.2023.101034⟩
Article dans une revueCT and X-ray contrast agents: Current clinical challenges and the future of contrast
Tyler Owens, Nicolas Anton, Mohamed Attia
Acta Biomaterialia, 2023, 171, pp.19-36. ⟨10.1016/j.actbio.2023.09.027⟩
Article dans une revueAcute Ankle Sprain in Basketball
P. Kauffmann, P. Le Borgne
The American Journal of Medicine, 2023, 136 (11), pp.1078. ⟨10.1016/j.amjmed.2023.07.012⟩
Article dans une revueA novel ΔNp63-dependent immune mechanism improves prognosis of HPV-related head and neck cancer
Jana Mourtada, Christelle Lony, Anaïs Nicol, Justine de Azevedo, Cyril Bour, Christine Macabre, Patrick Roncarati, Sonia Ledrappier, Philippe Schultz, Christian Borel, Mickaël Burgy, Bohdan Wasylyk, Georg Mellitzer, Michaël Herfs, Christian Gaiddon, Alain C. Jung
Frontiers in Immunology, 2023, 14, pp.1264093. ⟨10.3389/fimmu.2023.1264093⟩
Article dans une revueAbstractBACKGROUND: Deconvoluting the heterogenous prognosis of Human Papillomavirus (HPV)-related oropharyngeal squamous cell carcinoma (OSCC) is crucial for enhancing patient care, given its rapidly increasing incidence in western countries and the adverse side effects of OSCC treatments. METHODS: Transcriptomic data from HPV-positive OSCC samples were analyzed using unsupervised hierarchical clustering, and clinical relevance was evaluated using Kaplan-Meier analysis. HPV-positive OSCC cell line models were used in functional analyses and phenotypic assays to assess cell migration and invasion, response to cisplatin, and phagocytosis by macrophages in vitro. RESULTS: We found, by transcriptomic analysis of HPV-positive OSCC samples, a ΔNp63 dependent molecular signature that is associated with patient prognosis. ΔNp63 was found to act as a tumor suppressor in HPV-positive OSCC at multiple levels. It inhibits cell migration and invasion, and favors response to chemotherapy. RNA-Seq analysis uncovered an unexpected regulation of genes, such as DKK3, which are involved in immune response-signalling pathways. In agreement with these observations, we found that ΔNp63 expression levels correlate with an enhanced anti-tumor immune environment in OSCC, and ΔNp63 promotes cancer cell phagocytosis by macrophages through a DKK3/NF-κB-dependent pathway. CONCLUSION: Our findings are the first comprehensive identification of molecular mechanisms involved in the heterogeneous prognosis of HPV-positive OSCC, paving the way for much-needed biomarkers and targeted treatment.
Characteristics, management and outcomes of active cancer patients with cardiogenic shock
Hamid Merdji, Justine Gantzer, Laurent Bonello, Nicolas Lamblin, François Roubille, Bruno Levy, Sebastien Champion, Pascal Lim, Francis Schneider, Alain Cariou, Hadi Khachab, Jeremy Bourenne, Marie-France Seronde, Guillaume Schurtz, Brahim Harbaoui, Gerald Vanzetto, Charlotte Quentin, Anais Curtiaud, Jean-Emmanuel Kurtz, Nicolas Combaret, Benjamin Marchandot, Benoit Lattuca, Caroline Biendel, Guillaume Leurent, Vincent Bataille, Edouard Gerbaud, Etienne Puymirat, Eric Bonnefoy, Nadia Aissaoui, Clément Delmas
European Heart Journal: Acute Cardiovascular Care, 2023, 12 (10), pp.682-692. ⟨10.1093/ehjacc/zuad072⟩
Article dans une revueAbstract<b>Aims:</b> Characteristics, management, and outcomes of patients with active cancer admitted for cardiogenic shock remain largely unknown. This study aimed to address this issue and identify the determinants of 30-day and 1-year mortality in a large cardiogenic shock cohort of all etiologies. <b>Methods and results:</b> FRENSHOCK is a prospective multicenter observational registry conducted in French critical care units between April and October 2016. "Active cancer" was defined as a malignancy diagnosed within the previous weeks with planned or ongoing anticancer therapy. Among the 772 enrolled patients (mean age 65.7 ± 14.9 years; 71.5% male), 51 (6.6%) had active cancer. Among them, the main cancer types were solid cancers (60.8%), and hematological malignancies (27.5%). Solid cancers were mainly urogenital (21.6%), gastrointestinal (15.7%), and lung cancer (9.8%). Medical history, clinical presentation, and baseline echocardiography were almost the same between groups. In-hospital management significantly differed: patients with cancers received more catecholamines or inotropes (norepinephrine 72 vs 52%, p=0.005 and norepinephrine-dobutamine combination 64.7 vs 44.5%, p=0.005), but had less mechanical circulatory support (5.9 vs 19.5%, p=0.016). They presented similar 30-day mortality rate (29 vs 26%) but a significantly higher mortality at one-year (70.6 vs 45.2%, p<0.001). In multivariable analysis, active cancer was not associated with 30-day mortality but was significantly associated with 1-year mortality in 30-day survivors (HR 3.61 [1.29 - 10.11], p=0.015). <b>Conclusion: </b>Active cancer patients accounted for almost 7% of all cases of cardiogenic shock. Early mortality was the same regardless active cancer or not, whereas long-term mortality was significantly increased in patients with active cancer.
Surface modification of silica nanoparticles by chitosan for stabilization of water-in-oil Pickering emulsions
Fatemeh Heidari, Seid Mahdi Jafari, Aman Mohammad Ziaiifar, Nicolas Anton
Carbohydrate Polymer Technologies and Applications, 2023, 6, pp.100381. ⟨10.1016/j.carpta.2023.100381⟩
Article dans une revueAbstractWater-in-oil (W/O) Pickering emulsions (PEs) as delivery systems have recently attracted important research efforts. The lack of food-grade hydrophobic particulate as emulsion stabilizers is the most important challenge in this field. This study investigates the surface modification of silica (SiO2) nanoparticles (SNPs) by chitosan and their role in formulation and stabilization of PEs; namely, the adsorption of chitosan on the surface of SNPs through electrostatic attraction with different chitosan/SiO2 ratio and pH values. The ability of SNPs to stabilize water in oil PEs regarding this modification was then investigated. The interaction between SNPs and chitosan was characterized by zeta potential, wettability, FTIR, Energy dispersive X-ray mapping analysis (EDX- MAP) and nitrogen absorption/desorption isotherm. The results confirmed that the surface modification of SNPs by chitosan had a significant impact on zeta potential and on the wettability of SNPs. Finally, modified SNPs were applied to the formulation of PEs; we identified the optimized conditions that increase the emulsion formulation process and stability. Therefore, modified SNPs by chitosan in this study could act as food-grade W/O Pickering stabilizers to fabricate environmental-friendly emulsion products.
Potential added value of an AI software with prediction of malignancy for the management of incidental lung nodules
Bastien Michelin, Aïssam Labani, Pascal Bilbault, Catherine Roy, Mickaël Ohana
Research in Diagnostic and Interventional Imaging, 2023, 8, pp.100031. ⟨10.1016/j.redii.2023.100031⟩
Article dans une revueAbstractPurpose: To determine the impact of an artificial intelligence software predicting malignancy in the management of incidentally discovered lung nodules. Materials and methods: In this retrospective study, all lung nodules ≥ 6 mm and ≤ 30 mm incidentally discovered on emergency CT scans performed between June 1, 2017 and December 31, 2017 were assessed. Artificial intelligence software using deep learning algorithms was applied to determine their likelihood of malignancy: most likely benign (AI score < 50%), undetermined (AI score 50-75%) or probably malignant (AI score > 75%). Predictions were compared to two-year follow-up and Brock's model. Results: Ninety incidental pulmonary nodules in 83 patients were retrospectively included. 36 nodules were benign, 13 were malignant and 41 remained indeterminate at 2 years follow-up. AI analysis was possible for 81/90 nodules. The 34 benign nodules had an AI score between 0.02% and 96.73% (mean = 48.05 § 37.32), while the 11 malignant nodules had an AI score between 82.89% and 100% (mean = 93.9 § 2.3). The diagnostic performance of the AI software for positive diagnosis of malignant nodules using a 75% malignancy threshold was: sensitivity = 100% [95% CI 72%-100%]; specificity = 55.8% [38 -73]; PPV = 42.3% [23-63]; NPV = 100% [82-100]. With its apparent high NPV, the addition of an AI score to the initial CT could have avoided a guidelines-recommended follow-up in 50% of the benign pulmonary nodules (6/12 nodules). Conclusion: Artificial intelligence software using deep learning algorithms presents a strong NPV (100%, with a 95% CI 82-100), suggesting potential use for reducing the need for follow-up of nodules categorized as benign.
Influence of systemic sclerosis on periodontal health: A case–control study
Sophie Jung, Marianna Gavriiloglou, François Séverac, Lucille Haumesser, Amira Sayeh, Emmanuel Chatelus, Thierry Martin, Olivier Huck
Journal of Clinical Periodontology, 2023, 50 (10), pp.1348-1359. ⟨10.1111/jcpe.13846⟩
Article dans une revueNTPDase1/CD39 Ectonucleotidase Is Necessary for Normal Arterial Diameter Adaptation to Flow
Julie Favre, Charlotte Roy, Anne-Laure Guihot, Annick Drouin, Manon Laprise, Marc-Antoine Gillis, Simon Robson, Eric Thorin, Jean Sévigny, Daniel Henrion, Gilles Kauffenstein
International Journal of Molecular Sciences, 2023, 24 (20), pp.15038. ⟨10.3390/ijms242015038⟩
Article dans une revueAbstractNTPDase1/CD39, the major vascular ectonucleotidase, exerts thrombo-immunoregulatory function by controlling endothelial P2 receptor activation. Despite the well-described release of ATP from endothelial cells, few data are available regarding the potential role of CD39 as a regulator of arterial diameter. We thus investigated the contribution of CD39 in short-term diameter adaptation and long-term arterial remodeling in response to flow using Entpd1−/− male mice. Compared to wild-type littermates, endothelial-dependent relaxation was modified in Entpd1−/− mice. Specifically, the vasorelaxation in response to ATP was potentiated in both conductance (aorta) and small resistance (mesenteric and coronary) arteries. By contrast, the relaxing responses to acetylcholine were supra-normalized in thoracic aortas while decreased in resistance arteries from Entpd1−/− mice. Acute flow-mediated dilation, measured via pressure myography, was dramatically diminished and outward remodeling induced by in vivo chronic increased shear stress was altered in the mesenteric resistance arteries isolated from Entpd1−/− mice compared to wild-types. Finally, changes in vascular reactivity in Entpd1−/− mice were also evidenced by a decrease in the coronary output measured in isolated perfused hearts compared to the wild-type mice. Our results highlight a key regulatory role for purinergic signaling and CD39 in endothelium-dependent short- and long-term arterial diameter adaptation to increased flow.
NTPDase1/CD39 Ectonucleotidase Is Necessary for Normal Arterial Diameter Adaptation to Flow
Julie Favre, Charlotte Roy, Anne-Laure Guihot, Annick Drouin, Manon Laprise, Marc-Antoine Gillis, Simon C. Robson, Eric Thorin, Jean Sévigny, Daniel Henrion, Gilles Kauffenstein
International Journal of Molecular Sciences, 2023, 24 (20), pp.15038. ⟨10.3390/ijms242015038⟩
Article dans une revueAbstractNTPDase1/CD39, the major vascular ectonucleotidase, exerts thrombo-immunoregulatory function by controlling endothelial P2 receptor activation. Despite the well-described release of ATP from endothelial cells, few data are available regarding the potential role of CD39 as a regulator of arterial diameter. We thus investigated the contribution of CD39 in short-term diameter adaptation and long-term arterial remodeling in response to flow using Entpd1−/− male mice. Compared to wild-type littermates, endothelial-dependent relaxation was modified in Entpd1−/− mice. Specifically, the vasorelaxation in response to ATP was potentiated in both conductance (aorta) and small resistance (mesenteric and coronary) arteries. By contrast, the relaxing responses to acetylcholine were supra-normalized in thoracic aortas while decreased in resistance arteries from Entpd1−/− mice. Acute flow-mediated dilation, measured via pressure myography, was dramatically diminished and outward remodeling induced by in vivo chronic increased shear stress was altered in the mesenteric resistance arteries isolated from Entpd1−/− mice compared to wild-types. Finally, changes in vascular reactivity in Entpd1−/− mice were also evidenced by a decrease in the coronary output measured in isolated perfused hearts compared to the wild-type mice. Our results highlight a key regulatory role for purinergic signaling and CD39 in endothelium-dependent short- and long-term arterial diameter adaptation to increased flow.
Management of Glucose-Lowering Therapy in Older Adults with Type 2 Diabetes: Challenges and Opportunities.
Jean Doucet, Pierre Gourdy, Laurent Meyer, Nabil Benabdelmoumene, Isabelle Bourdel-Marchasson
Clinical Interventions in Aging, 2023, 18, pp.1687-1703. ⟨10.2147/cia.s423122⟩
Article dans une revueAbstractThe population of older adults (≥65 years) with type 2 diabetes mellitus (T2DM) is diverse, encompassing individuals with varying functional capabilities, living arrangements, concomitant medical conditions, and life expectancies. Hence, their categorization into different patient profiles (ie, good health, intermediate health, poor health) may aid in clinical decision-making when establishing glycemic goals and pharmacological treatment strategies. Further granularity in assessing each patient profile through interdisciplinary collaboration may also add precision to therapeutic and monitoring decisions. In this review, we discuss with a multidisciplinary approach how to deliver the best benefit from advanced diabetes therapies and technologies to older adults with T2DM according to each patient profile. There remain however several areas that deserve further research in older adults with T2DM, including the efficacy and safety of continuous glucose monitoring and automated insulin delivery systems, the switch to once-weekly insulin, the effectiveness of multidisciplinary care models, and the use of supported telemedicine and remote blood glucose monitoring in the oldest-old (≥85 years) who particularly require the assistance of others.
Modulation of inflammatory response after myocardial infarction: one explanation for the cardiovascular benefit of empagliflozin in the EMMY trial?
Antonin Trimaille, Benjamin Marchandot, Olivier Morel
European Heart Journal, 2023, 44 (38), pp.3929-3930. ⟨10.1093/eurheartj/ehad257⟩
Article dans une revueMicro-costing analysis of suspected lower respiratory tract infection care in a French emergency department
Valérie Wilmé, Erik André Sauleau, Pierrick Le Borgne, Éric Bayle, Pascal Bilbault, Sabrina Kepka
Frontiers in Public Health, 2023, 11, pp.1276373. ⟨10.3389/fpubh.2023.1276373⟩
Article dans une revueAbstractIntroduction: In the context of budgetary constraints faced by healthcare systems, the medical-economic evaluation of care strategies becomes essential. In particular, valuing consumed resources in the overcrowded emergency departments (EDs) has become a priority to adopt more efficient approaches in treating the growing number of patients. However, precisely measuring the cost of care is challenging. While bottom-up micro-costing is considered the gold standard, its practical application remains limited. Objective: The objective was to accurately estimate the ED care cost for patients consulting in a French ED for suspected lower respiratory tract infection. Methods: The authors conducted a cost analysis using a bottom-up micro-costing method. Patients were prospectively included between January 1, and March 31, 2023. The primary endpoint was the mean cost of ED care. Resources consumed were collected using direct observation method and cost data were obtained from information available at Strasbourg University Hospital. Results: The mean cost of ED care was €411.68 (SD = 174.49). The cost elements that made the greatest contribution to the total cost were laboratory tests, labor, latency time, imaging and consumables. Considering this cost and the current epidemiological data on respiratory infections in France, the absence of valuation for outpatient care represents an annual loss of over 17 million euros for healthcare facilities. Conclusion: Micro-costing is a key element in valuing healthcare costs. The importance of accurately measuring costs, along with measuring the health outcomes of a defined care pathway, is to enhance the relevance of health economic evaluations and thus ensure efficient care.
In vitro vascularized immunocompetent patient-derived model to test cancer therapies
Hélène Lê, Jules Deforges, Guoqiang Hua, Ysia Idoux-Gillet, Charlotte Ponté, Véronique Lindner, Anne Olland, Pierre-Emanuel Falcoz, Cécile Zaupa, Shreyansh Jain, Eric Quéméneur, Nadia Benkirane-Jessel, Jean-Marc Balloul
iScience, 2023, 26 (10), pp.108094. ⟨10.1016/j.isci.2023.108094⟩
Article dans une revueAbstractThis work describes a patient-derived tumoroid model (PDTs) to support precision medicine in lung oncology. The use of human adipose tissue-derived microvasculature and patient-derived peripheral blood mononuclear cells (PBMCs) permits to achieve a physiologically relevant tumor microenvironment. This study involved ten patients at various stages of tumor progression. The vascularized, immune-infiltrated PDT model could be obtained within two weeks, matching the requirements of the therapeutic decision. Histological and transcriptomic analyses confirmed that the main features from the original tumor were reproduced. The 3D tumor model could be used to determine the dynamics of response to antiangiogenic therapy and platinum-based chemotherapy. Antiangiogenic therapy showed a significant decrease in vascular endothelial growth factor (VEGF)-A expression, reflecting its therapeutic effect in the model. In an immune-infiltrated PDT model, chemotherapy showed the ability to decrease the levels of lymphocyte activation gene-3 protein (LAG-3), B and T lymphocyte attenuator (BTLA), and inhibitory receptors of T cells functions.
Staphylococcus epidermidis bloodstream infections are a cause of septic shock in intensive care unit patients
Julien Demiselle, Pierre Meyer, Thierry Lavigne, Julian Kaurin, Hamid Merdji, Maleka Schenck, Antoine Studer, Ralf Janssen-Langenstein, Julie Helms, Baptiste Hoellinger, Vincent Castelain, Antoine Grillon, Francis Schneider, Ferhat Meziani, Raphaël Clere-Jehl
International Journal of Infectious Diseases, 2023, 135, pp.45-48. ⟨10.1016/j.ijid.2023.07.014⟩
Article dans une revueAbstractObjectives: Staphylococcus epidermidis (SE) is a supposedly low-virulence agent, which may cause proven bloodstream infections (BSIs), with little-known consequences on intensive care unit (ICU) patients. We aimed at studying ICU patients diagnosed with BSIs caused by SE (SE-BSIs). Methods: We constituted a retrospective cohort in two medical ICUs. SE-BSIs were defined by two or more independent SE-positive blood cultures of the same strain, within 48 hours, without concurrent infection. Results: We included 59 patients; 58% were men (n = 34), with median age of 67 (interquartile range 60-74) years and a simplified acute physiology score II of 59 (36-74) points, and 56% were immunocompromised (n = 33). Among the 37 (63%) patients requiring norepinephrine initiation or increase at the onset of SE-BSI versus patients not requiring vasopressors (37%; n = 22), concomitant arterial lactate levels reached 2.8 (1.9-5.8) versus 1.5 (1.3-2.2) mmol/l (P <0.01), whereas the mean blood pressure was 49 (42-54) versus 61 (56-65) mm Hg (P = 0.01) and the mortality was 46% (n = 17) vs 14% (n = 3) at day 28 (P = 0.01), respectively. Regarding antibiotics, the susceptibility rates toward linezolid and vancomycin were 71% (n = 41/58) and 100% (n = 54/54), respectively. At the time of SE-BSI, all but one patient had a central venous access device. Conclusion: This work highlights SE-BSIs as a cause of septic shock, mostly in immunocompromised ICU patients, with increasing concerns about resistance to antibiotics and central line management. Keywords: Critical care; Immunocompromised host; Lymphopenia; Neoplasms; Septic shock; Staphylococcus epidermidis.
Body composition and muscle strength at the end of ICU stay are associated with 1-year mortality, a prospective multicenter observational study
Ali Ait Hssain, Nicolas Farigon, Hamid Merdji, Dominique Guelon, Julien Bohé, Sophie Cayot, Russel Chabanne, Jean-Michel Constantin, Bruno Pereira, Damien Bouvier, Nicolas Andant, Hubert Roth, Ronan Thibault, Vincent Sapin, Michel Hasselmann, Bertrand Souweine, Noël Cano, Yves Boirie, Claire Dupuis
Clinical Nutrition, 2023, 42 (10), pp.2070-2079. ⟨10.1016/j.clnu.2023.09.001⟩
Article dans une revueAbstractBACKGROUND and AIMS: After a prolonged intensive care unit (ICU) stay patients experience increased mortality and morbidity. The primary aim of this study was to assess the prognostic value of nutritional status, body mass composition and muscle strength, as assessed by body mass index (BMI), bioelectrical impedance analysis (BIA), handgrip (HG) test, and that of the biological features to predict one-year survival at the end of a prolonged ICU stay. METHODS: This was a multicenter prospective observational study. Survivor patients older than 18 years with ICU length of stay >72 h were eligible for inclusion. BIA and HG were performed at the end of the ICU stay. Malnutrition was defined by BMI and fat-free mass index (FFMI). The primary endpoint was one-year mortality. Multivariable logistic regression was performed to determine parameters associated with mortality. RESULTS: 572 patients were included with a median age of 63 years [53.5; 71.1], BMI of 26.6 kg/m(2) [22.8; 31.3], SAPS II score of 43 [31; 58], and ICU length of stay of 9 days [6; 15]. Malnutrition was observed in 142 (24.9%) patients. During the 1-year follow-up after discharge, 96 (18.5%) patients died. After adjustment, a low HG test score (aOR = 1.44 [1.11; 1.89], p = 0.01) was associated with 1-year mortality. Patients with low HG score, malnutrition, and Albuminemia <30 g/L had a one-year death rate of 41.4%. Conversely, patients with none of these parameters had a 1-year death rate of 4.1%. CONCLUSION: BIA to assess FFMI, HG and albuminemia at the end of ICU stay could be used to predict 1-year mortality. Their ability to identify patients eligible for a structured recovery program could be studied.
Epidemiology and outcome predictors in 450 patients with hanging-induced cardiac arrest: a retrospective study
Marie Salvetti, Guillaume Schnell, Nicolas Pichon, Maleka Schenck, Pierrick Cronier, Sebastien Perbet, Jean-Baptiste Lascarrou, Christophe Guitton, Olivier Lesieur, Laurent Argaud, Gwenhael Colin, Bernard Cholley, Jean-Pierre Quenot, Hamid Merdji, Thomas Geeraerts, Michael Piagnerelli, Gwenaelle Jacq, Marine Paul, Jonathan Chelly, Louise de Charentenay, Nicolas Deye, Marc Danguy Des Déserts, Guillaume Thiery, Marc Simon, Vincent Das, Frederic Jacobs, Charles Cerf, Julien Mayaux, Pascal Beuret, Abdelkader Ouchenir, Antoine Lafarge, Bertrand Sauneuf, Cedric Daubin, Alain Cariou, Stein Silva, Stephane Legriel
Frontiers in Neurology, 2023, 14, ⟨10.3389/fneur.2023.1240383⟩
Article dans une revueAbstractBackground Cardiac arrest is the most life-threatening complication of attempted suicide by hanging. However, data are scarce on its characteristics and outcome predictors. Methods This retrospective observational multicentre study in 31 hospitals included consecutive adults admitted after cardiac arrest induced by suicidal hanging. Factors associated with in-hospital mortality were identified by multivariate logistic regression with multiple imputations for missing data and adjusted to the temporal trends over the study period. Results Of 450 patients (350 men, median age, 43 [34–52] years), 305 (68%) had a psychiatric history, and 31 (6.9%) attempted hanging while hospitalized. The median time from unhanging to cardiopulmonary resuscitation was 0 [0–5] min, and the median time to return of spontaneous circulation (ROSC) was 20 [10–30] min. Seventy-nine (18%) patients survived to hospital discharge. Three variables were independently associated with higher in-hospital mortality: time from collapse or unhanging to ROSC>20 min (odds ratio [OR], 4.71; 95% confidence intervals [95%CIs], 2.02–10.96; p = 0.0004); glycaemia >1.4 g/L at admission (OR, 6.38; 95%CI, 2.60–15.66; p < 0.0001); and lactate >3.5 mmol/L at admission (OR, 6.08; 95%CI, 1.71–21.06; p = 0.005). A Glasgow Coma Scale (GCS) score of >5 at admission was associated with lower in-hospital mortality (OR, 0.009; 95%CI, 0.02–0.37; p = 0.0009). Conclusion In patients with hanging-induced cardiac arrest, time from collapse or unhanging to return of spontaneous circulation, glycaemia, arterial lactate, and coma depth at admission were independently associated with survival to hospital discharge. Knowledge of these risk factors may help guide treatment decisions in these patients at high risk of hospital mortality.
Dynamic longitudinal increase in D-dimers: an early predictor of bleeding complications in ECMO
Julie Helms, Anaïs Curtiaud, François Severac, Hamid Merdji, Eduardo Angles-Cano
Intensive Care Medicine, 2023, 49 (11), pp.1416-1417. ⟨10.1007/s00134-023-07224-3⟩
Article dans une revueDeveloping a core set of patient-reported outcomes and patient-reported experience measures for peritoneal surface malignancies (COMETE)
Abdelkader Taibi, Olivia Sgarbura, Laurent Villeneuve, Clarisse Eveno, Marc Pocard, Naoual Bakrin, Guillaume Economos, Cecile Odin, Sylvaine Durand Fontanier, Sylvia M. Bardet, Diane Goere, Cecile Brigand, Olivier Glehen, Martin Hübner
British Journal of Surgery, 2023, 110 (9), pp.1087-1091. ⟨10.1093/bjs/znad071⟩
Article dans une revueTherapeutic Potential of Targeting Prokineticin Receptors in Diseases
Martina Vincenzi, Amin Kremić, Appoline Jouve, Roberta Lattanzi, Rossella Miele, Mohamed Benharouga, Nadia Alfaidy, Stephanie Migrenne-Li, Anumantha G. Kanthasamy, Marimelia Porcionatto, Napoleone Ferrara, Igor V. Tetko, Laurent Désaubry, Canan Nebigil
Pharmacological Reviews, 2023, 75 (6), pp.1167-1199. ⟨10.1124/pharmrev.122.000801⟩
Article dans une revueVeno-Arterial Extracorporeal Membrane Oxygenation for Circulatory Failure in COVID-19 Patients: Insights from the ECMOSARS Registry
Amedeo Anselmi, Alexandre Mansour, Marylou Para, Nicolas Mongardon, Alizée Porto, Julien Guihaire, Marie-Catherine Morgant, Matteo Pozzi, Bernard Cholley, Pierre-Emmanuel Falcoz, Philippe Gaudard, Guillaume Lebreton, François Labaste, Claudio Barbanti, Olivier Fouquet, Sidney Chocron, Nicolas Mottard, Maxime Esvan, Claire Fougerou-Leurent, Erwan Flecher, André Vincentelli, Nicolas Nesseler, Marc Pierrot, Guillaume Flicoteaux, Philippe Mauriat, Alexandre Ouattara, Hadrien Roze, Olivier Huet, Marc-Olivier Fischer, Claire Alessandri, Raphel Bellaïche, Ophélie Constant, Quentin Roux, André Ly, Arnaud Meffert, Jean-Claude Merle, Lucile Picard, Elena Skripkina, Thierry Folliguet, Antonio Fiore, Nicolas d'Ostrevy, Marie-Catherine Morgan, Pierre-Grégoire Guinot, Maxime Nguyen, Lucie Gaide-Chevronnay, Nicolas Terzi, Gwenhaël Colin, Olivier Fabre, Arash Astaneh, Justin Issard, Elie Fadel, Dominique Fabre, Antoine Girault, Iolande Ion, Jean Baptiste Menager, Delphine Mitilian, Olaf Mercier, François Stephan, Jacques Thes, Jerôme Jouan, Thibault Duburcq, Valentin Loobuyck, Mouhammed Moussa, Agnes Mugnier, Natacha Rousse, Sabrina Manganiello, Olivier Desebbe, Jean-Luc Fellahi, Roland Henaine, Matteo Pozzi, Jean-Christophe Richard, Zakaria Riad, Christophe Guervilly, Sami Hraiech, Laurent Papazian, Matthias Castanier, Charles Chanavaz, Cyril Cadoz, Sebastien Gette, Guillaume Louis, Erick Portocarrero, Kais Brini, Nicolas Bischoff, Bruno Levy, Antoine Kimmoun, Mathieu Mattei, Pierre Perez, Alexandre Bourdiol, Yannick Hourmant, Pierre-Joachim Mahé, Bertrand Rozec, Mickaël Vourc’h, Stéphane Aubert, Florian Bazalgette, Claire Roger, Pierre Jaquet, Brice Lortat-Jacob, Pierre Mordant, Patrick Nataf, Juliette Patrier, Sophie Provenchere, Morgan Roué, Romain Sonneville, Alexy Tran-Dinh, Paul-Henri Wicky, Charles Al Zreibi, Yannis Guyonvarch, Sophie Hamada, Astrid Bertier, Anatole Harrois, Jordi Matiello, Thomas Kerforne, Corentin Lacroix, Nicolas Brechot, Alain Combes, Matthieu Schmidt, Juliette Chommeloux, Jean Michel Constantin, Cosimo D’alessandro, Pierre Demondion, Alexandre Demoule, Martin Dres, Guillaume Fadel, Muriel Fartoukh, Guillaume Hekimian, Charles Juvin, Pascal Leprince, David Levy, Charles Edouard Luyt, Marc Pineton de Chambrun, Thibaut Schoell, Pierre Fillâtre, Nicolas Massart, Roxane Nicolas, Maud Jonas, Charles Vidal, Nicolas Allou, Salvatore Muccio, Dario Di Perna, Vito-Giovanni Ruggieri, Bruno Mourvillier, Karl Bounader, Yoann Launey, Thomas Lebouvier, Alessandro Parasido, Florian Reizine, Philippe Seguin, Emmanuel Besnier, Dorothée Carpentier, Thomas Clavier, Anne Olland, Marion Villard, Fanny Bounes, Vincent Minville, Antoine Guillon, Yannick Fedun, James Ross
European Journal of Cardio-Thoracic Surgery, 2023, 64 (3), pp.ezad229. ⟨10.1093/ejcts/ezad229⟩
Article dans une revueAbstract<b>Objectives: </b>The clinical profile and outcomes of patients with Coronavirus Disease 2019 (COVID-19) who require veno-arterial extracorporeal membrane oxygenation (VA-ECMO) or veno-arterial-venous extracorporeal membrane oxygenation (VAV-ECMO) are poorly understood. We aimed to describe the characteristics and outcomes of these patients and to identify predictors of both favourable and unfavourable outcomes.<b>Methods:</b> ECMOSARS is a multicentre, prospective, nationwide French registry enrolling patients who require veno-venous extracorporeal membrane oxygenation (ECMO)/VA-ECMO in the context of COVID-19 infection (652 patients at 41 centres). We focused on 47 patients supported with VA- or VAV-ECMO for refractory cardiogenic shock.<b>Results:</b> The median age was 49. Fourteen percent of patients had a prior diagnosis of heart failure. The most common aetiologies of cardiogenic shock were acute pulmonary embolism (30%), myocarditis (28%) and acute coronary syndrome (4%). Extracorporeal cardiopulmonary resuscitation (E-CPR) occurred in 38%. In-hospital survival was 28% in the whole cohort, and 43% when E-CPR patients were excluded. ECMO cannulation was associated with significant improvements in pH and FiO2 on day 1, but non-survivors showed significantly more severe acidosis and higher FiO2 than survivors at this point (P = 0.030 and P = 0.006). Other factors associated with death were greater age (P = 0.02), higher body mass index (P = 0.03), E-CPR (P = 0.001), non-myocarditis aetiology (P = 0.02), higher serum lactates (P = 0.004), epinephrine (but not noradrenaline) use before initiation of ECMO (P = 0.003), haemorrhagic complications (P = 0.001), greater transfusion requirements (P = 0.001) and more severe Survival after Veno-Arterial ECMO (SAVE) and Sonographic Assessment of Intravascular Fluid Estimate (SAFE) scores (P = 0.01 and P = 0.03).<b>Conclusions:</b> We report the largest focused analysis of VA- and VAV-ECMO recipients in COVID-19. Although relatively rare, the need for temporary mechanical circulatory support in these patients is associated with poor prognosis. However, VA-ECMO remains a viable solution to rescue carefully selected patients. We identified factors associated with poor prognosis and suggest that E-CPR is not a reasonable indication for VA-ECMO in this population.
Mottling as a prognosis marker in cardiogenic shock
Hamid Merdji, Vincent Bataille, Anais Curtiaud, Laurent Bonello, François Roubille, Bruno Levy, Pascal Lim, Francis Schneider, Hadi Khachab, Jean-Claude Dib, Marie-France Seronde, Guillaume Schurtz, Brahim Harbaoui, Gerald Vanzetto, Severine Marchand, Caroline Eva Gebhard, Patrick Henry, Nicolas Combaret, Benjamin Marchandot, Benoit Lattuca, Caroline Biendel, Guillaume Leurent, Edouard Gerbaud, Etienne Puymirat, Eric Bonnefoy, Ferhat Meziani, Clément Delmas
Annals of Intensive Care, 2023, 13 (1), pp.80. ⟨10.1186/s13613-023-01175-0⟩
Article dans une revueAbstract<b>Aims:</b> Impact of skin mottling has been poorly studied in patients admitted for cardiogenic shock. This study aimed to address this issue and identify determinants of 30-day and 1-year mortality in a large cardiogenic shock cohort of all etiologies. <b>Methods and results: </b>FRENSHOCK is a prospective multicenter observational registry conducted in French critical care units between April and October, 2016. Among the 772 enrolled patients (mean age 65.7 ± 14.9 years; 71.5% male), 660 had skin mottling assessed at admission (85.5%) with almost 39% of patients in cardiogenic shock presenting mottling. The need for invasive respiratory support was significantly higher in patients with mottling (50.2% vs. 30.1%, p < 0.001) and likewise for the need for renal replacement therapy (19.9% vs. 12.4%, p = 0.09). However, the need for mechanical circulatory support was similar in both groups. Patients with mottling at admission presented a higher length of stay (19 vs. 16 days, p = 0.033), a higher 30-day mortality rate (31% vs. 23.3%, p = 0.031), and also showed significantly higher mortality at 1-year (54% vs. 42%, p = 0.003). The subgroup of patients in whom mottling appeared during the first 24 h after admission had the worst prognosis at 30 days. <b>Conclusion: </b>Skin mottling at admission in patients with cardiogenic shock was statistically associated with prolonged length of stay and poor outcomes. As a perfusion-targeted resuscitation parameter, mottling is a simple, clinical-based approach and may thus help to improve and guide immediate goal-directed therapy to improve cardiogenic shock patients' outcomes.
Advanced respiratory mechanics assessment in mechanically ventilated obese and non-obese patients with or without acute respiratory distress syndrome
François M Beloncle, Jean-Christophe Richard, Hamid Merdji, Christophe Desprez, Bertrand Pavlovsky, Elise Yvin, Lise Piquilloud, Pierre-Yves Olivier, Dara Chean, Antoine Studer, Antonin Courtais, Maëva Campfort, Hassene Rahmani, Arnaud Lesimple, Ferhat Meziani, Alain Mercat
Critical Care, 2023, 27 (1), pp.343. ⟨10.1186/s13054-023-04623-2⟩
Article dans une revueAbstractBackground: Respiratory mechanics is a key element to monitor mechanically ventilated patients and guide ventilator settings. Besides the usual basic assessments, some more complex explorations may allow to better characterize patients' respiratory mechanics and individualize ventilation strategies. These advanced respiratory mechanics assessments including esophageal pressure measurements and complete airway closure detection may be particularly relevant in critically ill obese patients. This study aimed to comprehensively assess respiratory mechanics in obese and non-obese ICU patients with or without ARDS and evaluate the contribution of advanced respiratory mechanics assessments compared to basic assessments in these patients. Methods: All intubated patients admitted in two ICUs for any cause were prospectively included. Gas exchange and respiratory mechanics including esophageal pressure and end-expiratory lung volume (EELV) measurements and low-flow insufflation to detect complete airway closure were assessed in standardized conditions (tidal volume of 6 mL kg -1 predicted body weight (PBW), positive end-expiratory pressure (PEEP) of 5 cmH 2 O) within 24 h after intubation. Results: Among the 149 analyzed patients, 52 (34.9%) were obese and 90 (60.4%) had ARDS (65.4% and 57.8% of obese and non-obese patients, respectively, p = 0.385). A complete airway closure was found in 23.5% of the patients. It was more frequent in obese than in non-obese patients (40.4% vs 14.4%, p < 0.001) and in ARDS than in non-ARDS patients (30% vs. 13.6%, p = 0.029). Respiratory system and lung compliances and EELV/PBW were similarly decreased in obese patients without ARDS and obese or non-obese patients with ARDS. Chest wall compliance was not impacted by obesity or ARDS, but end-expiratory esophageal pressure was higher in obese than in nonobese patients. Chest wall contribution to respiratory system compliance differed widely between patients but was not predictable by their general characteristics. Conclusions: Most respiratory mechanics features are similar in obese non-ARDS and non-obese ARDS patients, but end-expiratory esophageal pressure is higher in obese patients. A complete airway closure can be found in around 25% of critically ill patients ventilated with a PEEP of 5 cmH2O. Advanced explorations may allow to better characterize individual respiratory mechanics and adjust ventilation strategies in some patients.
Mesenchymal-like Tumor Cells and Myofibroblastic Cancer-Associated Fibroblasts Are Associated with Progression and Immunotherapy Response of Clear Cell Renal Cell Carcinoma
Guillaume Davidson, Alexandra Helleux, Yann Vano, Veronique Lindner, Antonin Fattori, Marie Cerciat, Reza T. Elaidi, Virginie Verkarre, Cheng-Ming Sun, Christine Chevreau, Mostefa Bennamoun, Hervé Lang, Thibault Tricard, Wolf H. Fridman, Catherine Sautes-Fridman, Xiaoping Su, Damien Plassard, Céline Keime, Christelle Thibault-Carpentier, Philippe Barthelemy, Stéphane M. Oudard, Irwin Davidson, Gabriel G. Malouf
Cancer Research, 2023, 83 (17), pp.2952-2969. ⟨10.1158/0008-5472.CAN-22-3034⟩
Article dans une revueAbstractImmune checkpoint inhibitors (ICI) represent the cornerstone for the treatment of patients with metastatic clear cell renal cell carcinoma (ccRCC). Despite a favorable response for a subset of patients, others experience primary progressive disease, highlighting the need to precisely understand the plasticity of cancer cells and their cross-talk with the microenvironment to better predict therapeutic response and personalize treatment. Single-cell RNA sequencing of ccRCC at different disease stages and normal adjacent tissue (NAT) from patients identified 46 cell populations, including 5 tumor subpopulations, characterized by distinct transcriptional signatures representing an epithelial-to-mesenchymal transition gradient and a novel inflamed state. Deconvolution of the tumor and microenvironment signatures in public data sets and data from the BIONIKK clinical trial (NCT02960906) revealed a strong correlation between mesenchymal-like ccRCC cells and myofibroblastic cancer-associated fibroblasts (myCAF), which are both enriched in metastases and correlate with poor patient survival. Spatial transcriptomics and multiplex immune staining uncovered the spatial proximity of mesenchymal-like ccRCC cells and myCAFs at the tumor-NAT interface. Moreover, enrichment in myCAFs was associated with primary resistance to ICI therapy in the BIONIKK clinical trial. These data highlight the epithelial-mesenchymal plasticity of ccRCC cancer cells and their relationship with myCAFs, a critical component of the microenvironment associated with poor outcome and ICI resistance. SIGNIFICANCE: Single-cell and spatial transcriptomics reveal the proximity of mesenchymal tumor cells to myofibroblastic cancer-associated fibroblasts and their association with disease outcome and immune checkpoint inhibitor response in clear cell renal cell carcinoma. Humans Gene Expression Profiling Prognosis Kidney Neoplasms Immunotherapy Tumor Microenvironment Clinical Trials as Topic
Cost analysis of continuous glucose monitoring in patients hospitalized in a diabetes department
Valentina Maria Pepe, Sandra Wisniewski, Fatema Fall-Mostaine, Luc Rakotoarisoa, Aurélie Bros, Bénédicte Gourieux, Laurence Kessler
Diabetes & Metabolism, 2023, 49 (5), pp.101473. ⟨10.1016/j.diabet.2023.101473⟩
Article dans une revuePictorial adaptation of the quality of recovery 15 scale and psychometric validation into a pediatric surgical population
Eric Noll, Vincent de Angelis, Claire Bopp, Chloé Chauvin, Isabelle Talon, Elliott Bennett-Guerrero, François Lefebvre, Julien Pottecher
Scientific Reports, 2023, 13 (1), ⟨10.1038/s41598-023-40673-w⟩
Article dans une revueAbstractPatient reported outcomes measures (PROMS) are important endpoints to measure patient health status in the perioperative setting. However, there are no good tools to measure PROMS in the pediatric surgical population. Patients 7 to 17 years old undergoing surgery were included and followed up for 1 day after surgery (POD1). At POD1 the patients were asked to rate their overall postoperative recovery using a 100-mm visual analog scale (VAS). The primary outcome was the pediatric QoR-15 score on postoperative day 1 (POD1). 150 patients completed the study. The mean (SD) pediatric QoR-15F scores were 132.1 (14.1) and 111.0 (27.0), preoperatively and on POD1, respectively. Convergent validity confirmed with Pearson (r) correlation between the postoperative pediatric QoR-15F and the patient-rated global recovery assessment was 0.72 (95% confidence interval [0.63-0.79]; p < 10-16). Concerning reliability, internal consistency of the pediatric QoR-15 assessed by Cronbach's alpha was 0.90. The test-retest concordance correlation coefficient was 0.92; 95% CI [0.83-0.96]. Split-half alpha was 0.74. The pictorial pediatric version of the QoR-15F showed good validity, reliability, responsiveness, acceptability and feasibility. This PROMS should be considered for clinical care and research in the perioperative pediatric patient setting.Trial Registration: NCT04453410 on clinicaltrials.gov.
Impact of gender on left atrial low-voltage zones in patients with persistent atrial fibrillation: results of a voltage-guided ablation
Halim Marzak, Romain Ringele, Kensuke Matsushita, Benjamin Marchandot, Simon Fitouchi, Thomas Cardi, Mohamad Kanso, Alexandre Schatz, Justine Hammann, Patrick Ohlmann, Olivier Morel, Laurence Jesel
Frontiers in Cardiovascular Medicine, 2023, 10, ⟨10.3389/fcvm.2023.1229345⟩
Article dans une revueAbstractBackground: Gender-related differences have been reported in atrial fibrotic remodeling and prognosis of atrial fibrillation (AF) patients after ablation. We assessed in persistent AF the regional distribution of left atrial (LA) bipolar voltage and the extent of low-voltage zones (LVZ) according to gender as well as the results of a voltage-guided substrate ablation. Methods: Consecutive patients who underwent a voltage-guided AF ablation were enrolled. LA endocardial voltage maps were obtained using a 3D electroanatomical mapping system in sinus rhythm. LVZ was defined as <0.5 mV. Results: A total of 115 patients were enrolled (74 men, 41 women). The LA bipolar voltage amplitude was twice lower in the whole LA ( p < 0.01) and in each atrial region in women compared with men, whereas the LA indexed volume was similar. LVZ were found in 56.1% of women and 16.2% of men ( p < 0.01). LVZ were also more extensive in women ( p = 0.01), especially in the anterior LA. Atrial voltage alteration occurred earlier in women than in men. In a multivariate analysis, the female sex (OR 12.99; 95% CI, 3.23-51.63, p = 0.0001) and LA indexed volume (OR 1.09; 95% CI, 1.04-1.16, p = 0.001) were predictive of LVZ. Atrial arrhythmia-free survival was similar in men and women 36 months after a single ablation procedure. <div>Conclusion:<p>The study reports a strong relationship between the female gender and atrial substrate remodeling. The female gender was significantly associated with higher incidence, earlier occurrence, and greater extent of LVZ compared with men. Despite the female-specific characteristics in atrial remodeling, LVZ-guided ablation may improve the AF ablation outcome in women.</p></div>
Organizational Benefits of Ultra-Low-Dose Chest CT Compared to Chest Radiography in the Emergency Department for the Diagnostic Workup of Community-Acquired Pneumonia: A Real-Life Retrospective Analysis
Sabrina Kepka, Charlène Heimann, François Severac, Louise Hoffbeck, Pierrick Le Borgne, Eric Bayle, Yvon Ruch, Joris Muller, Catherine Roy, Erik André Sauleau, Emmanuel Andres, Mickaël Ohana, Pascal Bilbault
Medicina, 2023, 59 (9), pp.1508. ⟨10.3390/medicina59091508⟩
Article dans une revueAbstractBackground and Objectives: Chest radiography remains the most frequently used examination in emergency departments (ED) for the diagnosis of community-acquired pneumonia (CAP), despite its poor diagnostic accuracy compared with ultra-low-dose (ULD) chest computed tomography (CT). However, although ULD CT appears to be an attractive alternative to radiography, its organizational impact in ED remains unknown. Our objective was to compare the relevant timepoints in ED management of CT and chest radiography. Materials and Methods: We conducted a retrospective study in two ED of a University Hospital including consecutive patients consulting for a CAP between 1 March 2019 and 29 February 2020 to assess the organizational benefits of ULD chest CT and chest radiography (length of stay (LOS) in the ED, time of clinical decision after imaging). Overlap weights (OW) were used to reduce covariate imbalance between groups. Results: Chest radiography was performed for 1476 patients (mean age: 76 years [63; 86]; 55% men) and ULD chest CT for 133 patients (mean age: 71 [57; 83]; 53% men). In the weighted population with OW, ULD chest CT did not significantly alter the ED LOS compared with chest radiography (11.7 to 12.2; MR 0.96 [0.85; 1.09]), although it did significantly reduce clinical decision time (6.9 and 9.5 h; MR 0.73 [0.59; 0.89]). Conclusion: There is real-life evidence that a strategy with ULD chest CT can be considered to be a relevant approach to replace chest radiography as part of the diagnostic workup for CAP in the ED without increasing ED LOS.
Awareness and precaution attitude of dentists as regards to risks associated with exposure to COVID-19
Merve Benli, Olivier Huck, Mutlu Ozcan
Brazilian Dental Science, 2023, 24, ⟨10.14295/bds.2021.v24i4.2583⟩
Article dans une revueAbstractObjective: Dentists need a high level of awareness to limit the spread of COVID-19 (Coronavirus disease 2019). This study aimed to evaluate the level of awareness and attitude regarding the risk associated with dental procedures among dentists. Material and Methods: An online questionnaire was submitted to dentists between April-May 2020. The questionnaire form included questions related to demographic data, the transmission characterization of SARS-CoV-2, and treatment of COVID-19 patients. Data were analyzed using IBM SPSS V23 and chi-square test (p ≤ 0.05). Results: A total of 3825 participants (29.1± 7.6 years) were included. In COVID-19, the riskiest dental branch in terms of the risk of contamination through saliva was considered to be Periodontics (32.2%), while the least risky branch was Orthodontics (0.2%). Specific dental treatment procedures considered at high risk of contamination were tooth preparation (69.4%), scaling and root planing (63.5%), filling (53.4%), and pulpectomy (40.5%). The parameters of the study that differed according to gender and professional status were the viability of the virus, the risk assessment, saliva contamination risk, and aerosol-generating activities for COVID-19 (p < 0.05). Conclusion: Dentists were aware of the risk assessment and extra precautionary methods. However, they had limited knowledge about the viability of the virus. Dentists should be aware of recommended approaches and update their knowledge about COVID-19 to limit the spread of the disease. Since dentistry is an area suitable for the transmission of the COVID-19, the fact that dentists have information about the viability of this virus will be lifesaving in clinical applications.
Extracranial anticoagulant related bleedings admitted to intensive care units: a French multicenter retrospective study
Thomas Botrel, Sibylle Cunat, Julie Helms, Jérémie Lemarié, Jeanne Gaillon, Sébastien Préau, Raphael Favory, Arnaud Thille, Florence Boissier, Eric Maury, Jérémie Joffre, Hafid Ait-Oufella
Critical Care, 2023, 27 (1), pp.312. ⟨10.1186/s13054-023-04605-4⟩
Article dans une revueAbstractAbstract Background Anticoagulants are widely used but can lead to iatrogenic events such as bleeding. Limited data exists regarding the characteristics and management of patients admitted to intensive care units (ICU) for severe anticoagulant-related extracranial bleeding. Methods A retrospective observational study was conducted in five French ICUs. From January 2007 to December 2018, all patients aged over 18 years admitted to ICU for extracranial bleeding while receiving therapeutic anticoagulation were included. Results 486 patients were included, mainly male (61%) with an average age of 73 ± 13 years. Most patients had comorbidities, including hypertension (68%), heart disease (49%) and diabetes (33%). Patients were treated by vitamin K antagonists (VKA, 54%), heparins (25%) and direct oral anticoagulants (DOAC, 7%). The incidence of patients admitted to ICU for anticoagulant-related bleeding increased from 3.2/1000 admissions in 2007 to 5.8/1000 in 2018. This increase was particularly high for DOAC class. Upon admission, patients exhibited severe organ failure, as evidenced by a high SOFA score (7 ± 4) and requirement for organ support therapies such as vasopressors (31.5%) and invasive mechanical ventilation (34%). Adherence to guidelines for the specific treatment of anticoagulant-related bleeding was generally low. ICU mortality was 27%. In multivariate analysis, five factors were independently associated with mortality: chronic hypertension, need for vasopressors, impaired consciousness, hyperlactatemia and prolonged aPTT > 1.2. Conclusion Anticoagulant-related extracranial bleeding requiring ICU admission is a serious complication responsible for organ failure and significant mortality. Its incidence is rising. The therapeutic management is suboptimal and could be improved by educational programs.
Management of patients suffering from mild traumatic brain injury 2023
Cédric Gil-Jardiné, Jean-François Payen, Rémy Bernard, Xavier Bobbia, Pierre Bouzat, Pierre Catoire, Anthony Chauvin, Yann-Erick Claessens, Bénédicte Douay, Xavier Dubucs, Damien Galanaud, Tobias Gauss, Jean-Yves Gauvrit, Thomas Geeraerts, Bertrand Glize, Sybille Goddet, Anne Godier, Pierrick Le Borgne, Geoffroy Rousseau, Vincent Sapin, Lionel Velly, Damien Viglino, Bernard Vigue, Philippe Cuvillon, Denis Frasca, Pierre-Géraud Claret
Anaesthesia Critical Care & Pain Medicine, 2023, 42 (4), pp.101260. ⟨10.1016/j.accpm.2023.101260⟩
Article dans une revueAbstractObjective: To develop a multidisciplinary French reference that addresses initial pre- and in-hospital management of a mild traumatic brain injury patient. Design: A panel of 22 experts was formed on request from the French Society of Emergency Medicine (SFMU) and the French Society of Anaesthesiology and Critical Care Medicine (SFAR). A policy of declaration and monitoring of links of interest was applied and respected throughout the process of producing the guidelines. Similarly, no funding was received from any company marketing a health product (drug or medical device). The expert panel had to respect and follow the Grade® (Grading of Recommendations Assessment, Development and Evaluation) methodology to evaluate the quality of the evidence on which the recommendations were based. Given the impossibility of obtaining a high level of evidence for most of the recommendations, it was decided to adopt a "Recommendations for Professional Practice" (RPP) format, rather than a Formalized Expert Recommendation (FER) format, and to formulate the recommendations using the terminology of the SFMU and SFAR Guidelines. Methods: Three fields were defined: 1) pre-hospital assessment, 2) emergency room management, and 3) emergency room discharge modalities. The group assessed 11 questions related to mild traumatic brain injury. Each question was formulated using a PICO (Patients Intervention Comparison Outcome) format. Results: The experts' synthesis work and the application of the GRADE® method resulted in the formulation of 14 recommendations. After two rounds of rating, strong agreement was obtained for all recommendations. For one question, no recommendation could be made. Conclusion: There was strong agreement among the experts on important, transdisciplinary recommendations, the purpose of which is to improve management practices for patients with mild head injury.
A Combinatorial Approach to Regenerate the Periodontal Ligament and Cementum in a Nondental Microenvironment
Yongwen Guo, Mengting He, Peiqi Wang, Ding Bai, Jeong-Hui Park, Khandmaa Dashnyam, Jung-Hwan Lee, Olivier Huck, Nadia Benkirane-Jessel, Hae-Won Kim, Murugan Ramalingam
Journal of Tissue Engineering and Regenerative Medicine, 2023, 2023, pp.1 - 12. ⟨10.1155/2023/1277760⟩
Article dans une revueAbstractWhile treated dentin matrix (TDM) has been used for regeneration of dental tissues, the quality and quantity of regenerated periodontal tissue structure are suboptimal. Te present study was undertaken to test whether the combined use of the TDM with dental follicle cells (DFCs) and Hertwig's epithelial root sheath (HERS) cells enhances the regeneration of periodontal structures in a nondental microenvironment. TDMs were fabricated from 3-month-old Sprague-Dawley (SD) rats. DFCs and HERS cells were isolated from postnatal 7-day SD rats. Purifed DFCs and HERS cells, both in combination or alone, were seeded and cultured on TDM in vitro and characterized. Te cell-seeded TDMs were subsequently implanted into a 3-month-old rat greater omentum for 6 weeks, and further histological evaluation was performed. Te results showed that cells grew well on the surface of TDMs, and mineralized nodules could be seen, especially in the HERS + DFCs group. After transplantation in rat omentum, periodontal ligament-like fbers and cementum-like structures were observed around the TDM in 1/3 of the samples in both the HERS group and the DFCs group and in 2/3 of the samples in the HERS + DFCs group, while almost no attached tissue formation was found in the TDM only group. Te formed cementum width and the periodontal ligament length were signifcantly larger in the HERS + DFCs group. Te periodontal ligament-like fbers in the HERS + DFCs group were orderly arranged and attached to the cementum-like tissues, which resembled the cementum-periodontal structure. Terefore, the combined use of DFCs, TDM, and HERS cells may be a promising strategy for the regeneration of the periodontal structures, especially in the nondental microenvironment.
Extracorporeal life support use in limited lung function: a narrative review
João Santos Silva, Daniel Cabral, Paulo Almeida Calvinho, Anne Olland, Pierre-Emmanuel Falcoz
Journal of Thoracic Disease, 2023, 15 (9), pp.5239 - 5247. ⟨10.21037/jtd-22-1364⟩
Article dans une revueAbstractBackground and Objective: In thoracic surgery, different modalities of extracorporeal life support (ECLS) can be used for cardiorespiratory support in complex scenarios. Decades of learning in clinical practice and physiology associated with technological development led to a great variety of ECLS technologies available. Thoracic surgery procedures with difficult or impossible single lung ventilation may still be performed using different ECLS modalities. The aim of this review is to describe the use of ECLS, with its different modalities, as a solution to perform complex surgeries in a patient with difficult or impossible single lung ventilation. Methods: A literature review was conducted using the terms "extracorporeal life support pulmonary resection" and "extracorporeal life support thoracic surgery", and articles were selected according to defined criteria. Key Content and Findings: To support lung function during thoracic surgery, the most efficient and popular variety of ECLS is venovenous extracorporeal membrane oxygenation. Lung resection on a single lung after pneumonectomy, surgery in a patient with severe hypercapnia and/or low respiratory reserve, carinal and airway surgery, and severe thoracic trauma are the main examples of situations where ECLS may be the solution to provide a safe surgical environment in patients who cannot tolerate single lung ventilation. Multidisciplinarity, selection of patients and careful surgical planning are cornerstones in defining the situations that may benefit from ECLS support. Conclusions: Knowledge on techniques of ECLS are essential for every thoracic surgeon. Although rarely used, these techniques of cardiorespiratory support should be considered when planning complex cases with difficulties in ventilation and emergent situations.
Un signe radiographique indirect de rupture du ligament croisé antérieur
P. Kauffmann, F. Weill, P. Le Borgne
Annales françaises de médecine d'urgence, 2023, 13 (4), pp.263-264. ⟨10.3166/afmu-2022-0507⟩
Article dans une revueDNM2 levels normalization improves muscle phenotypes of a novel mouse model for moderate centronuclear myopathy
Juliana de Carvalho Neves, Foteini Moschovaki-Filippidou, Johann Böhm, Jocelyn Laporte
Molecular Therapy - Nucleic Acids, 2023, 33, pp.321-334. ⟨10.1016/j.omtn.2023.07.003⟩
Article dans une revueAbstractDynamin 2 (DNM2) is a ubiquitously expressed GTPase regulating membrane trafficking and cytoskeleton dynamics. Heterozygous dominant mutations in DNM2 cause centronuclear myopathy (CNM), associated with muscle weakness and atrophy and histopathological hallmarks as fiber hypotrophy and organelles mis-position. Different severities range from the severe neonatal onset form to the moderate form with childhood onset and to the mild adult onset form. No therapy is approved for CNM. Here we aimed to validate and rescue a mouse model for the moderate form of DNM2-CNM harboring the common DNM2 R369W missense mutation. Dnm2(R369W/+) mice presented with increased DNM2 protein level in muscle and moderate CNM-like phenotypes with force deficit, muscle and fiber hypotrophy, impaired mTOR signaling, and progressive mitochondria and nuclei mis-position with age. Molecular analyses revealed a fiber type switch toward oxidative metabolism correlating with decreased force and alteration of mitophagy markers paralleling mitochondria structural defects. Normalization of DNM2 levels through intramuscular injection of AAV-shDnm2 targeting Dnm2 mRNA significantly improved histopathology and muscle and myofiber hypotrophy. These results showed that the Dnm2(R369W/+) mouse is a faithful model for the moderate form of DNM2-CNM and revealed that DNM2 normalization after a short 4-week treatment is sufficient to improve the CNM phenotypes.
Targeting Prohibitins to Inhibit Melanoma Growth and Overcome Resistance to Targeted Therapies
Ahmad Najem, Mohammad Krayem, Serena Sabbah, Matilde Pesetti, Fabrice Journe, Ahmad Awada, Laurent Désaubry, Ghanem E. Ghanem
Cells, 2023, 12 (14), pp.1855. ⟨10.3390/cells12141855⟩
Article dans une revueEfficacy of Articaine or Eugenol for Pain Relief after Emergency Coronal Pulpotomy in Teeth with Irreversible Pulpitis: A Randomized Clinical Trial
Fernandez de Grado Gabriel, Bourdin Clément, Fioretti Florence, Musset Anne-Marie, Offner Damien
Dentistry Journal, 2023, 11 (7), pp.167. ⟨10.3390/dj11070167⟩
Article dans une revueAbstractIrreversible pulpitis is an extremely painful dental pathology. Its emergency treatment, pulpotomy, should include the use of a pulp dressing in the pulp chamber until the final treatment. Various antalgic products have been suggested as efficient medications to relieve the patient's pain and are commonly used, but data for scientific validation are scarce. Objective: We evaluated the efficacy of articaine or eugenol in the diminution of pain after pulpotomy. Design: We included 100 patients with irreversible pulpitis and evaluated their initial pain levels. Pain was measured using a 0-10 numeric rating scale. After treatment through pulpotomy, we randomized them into two groups using either articaine or eugenol as a pulp dressing and evaluated their pain level at 1, 3 and 7 days. Results: Initial pain levels were severe (7.53). The use of painkillers was not associated with lower levels of pain. Both treatments showed great efficiency on day 1, with stronger efficiency of eugenol than articaine, showing a decrease of 6.24 versus 4.89 (p = 0.025). Both treatments were efficient, whatever the age or sex of the patient, the initial pain level, and the causal tooth. Conclusion: Pulpotomy is an efficient way to relieve pain, using either articaine or eugenol. When choosing a pulp dressing, eugenol should be the first choice.
Determinants and treatments of heart failure after transcatheter aortic valve implantation: moving up a notch
Kensuke Matsushita, Benjamin Marchandot, Antonin Trimaille, Sandy Hmadeh, Marion Kibler, Joe Heger, Antje Reydel, Adrien Carmona, Sébastien Hess, Laurence Jesel, Patrick Ohlmann, Valérie Schini-Kerth, Olivier Morel
ESC Heart Failure, 2023, 10 (4), pp.2183 - 2199. ⟨10.1002/ehf2.14435⟩
Article dans une revueAbstractTranscatheter aortic valve implantation (TAVI) has become an alternative to surgical aortic valve replacement for patients with symptomatic severe aortic stenosis in elderly and comorbid population. Significant improvement in heart function has been observed in patients undergoing TAVI, but numerous patients are readmitted to hospital for heart failure (HF). Moreover, repeat HF hospitalization is strongly associated with an adverse prognosis and increases the financial burden of health care. Although studies have identified pre-existing and post-procedural factors that contribute to HF hospitalization after TAVI, there is a paucity of data regarding optimal post-procedural pharmacological treatments. This review aims to provide an overview of the current understanding of mechanisms, determinants, and potential treatments of HF following TAVI. We first review the pathophysiology of left ventricular (LV) remodelling, coronary microcirculation disorder, and endothelial dysfunction in patients with aortic stenosis and then examine the impact of TAVI on these conditions. We then present evidence of various factors and complications that may interplay with LV remodelling and contribute to HF events after TAVI. Next, we describe the triggers and predictors of early and late HF rehospitalizations following TAVI. Lastly, we discuss the potential of conventional pharmacological treatments, including renin-angiotensin blockers, beta-blockers, and diuretics in TAVI patients. The paper explores the potential of newer drugs, including sodium-glucose co-transporter 2 inhibitors, anti-inflammatory drugs, and ion supplementation. Comprehensive knowledge in this field may aid in recognizing successful existing therapies, developing effective new treatments, and establishing dedicated patient care strategies during follow-up after TAVI.
Donors in lung transplantation: does age matter?
Charlotte Ponté, Omar Alkhatiri, Anne Olland, Pierre-Emmanuel Falcoz
Interdisciplinary Cardiovascular and Thoracic Surgery, 2023, 37 (1), pp.ivad111. ⟨10.1093/icvts/ivad111⟩
Article dans une revueAbstractA best-evidence topic was written according to a structured protocol. The question addressed was the following: in patient undergoing lung transplantation, are lungs from donors of age >60 years old (yo) associated with equivalent outcomes-including primary graft dysfunction, respiratory function and survival-than lungs from donors < _60yo? Altogether, >200 papers were found using the reported search, of which 12 represented the best evidence to answer the clinical question. The authors, journals, dates, country of publication, patients group studied, study type, relevant outcomes, and results of these papers were tabulated. Amongst the 12 papers reviewed, survival results were different depending on whether donor age was analysed raw or adjusted for recipients' age and initial diagnosis. Indeed, recipients with interstitial lung disease (ILD), pulmonary hypertension or cystic fibrosis (CF) had significantly inferior overall survival when receiving grafts from older donors. When older grafts are allocated to younger donors, a significant decrease in survival has been noticed in the case of single lung transplantation. In addition, 3 papers showed worse results regarding peak forced expiratory volume in 1 second (FEV1) in patients receiving older organs, and 4 showed comparable primary graft dysfunction incidence rates. We conclude that when carefully assessed and allocated to the recipient who could benefit most from the transplant (e.g., a patient with a diagnosis of chronic obstructive pulmonary disease (COPD), who would not require a prolonged cardiopulmonary bypass (CPB)), lung grafts from donors of >60yo offer comparable results to younger donors.
Editorial: Identifying novel biomarkers in bladder cancer
Thorsten H Ecke, Yair Lotan, Thierry Massfelder
Frontiers in Oncology, 2023, 13, ⟨10.3389/fonc.2023.1191736⟩
Article dans une revueAbstractNo abstract available
Optical coherence tomography angiography in diabetic macular edema treated with intravitreal aflibercept: a 48-week observational study (the DOCTA study)
Jean-François Korobelnik, David Gaucher, Stéphanie Baillif, Catherine Creuzot-Garcher, Laurent Kodjikian, Michel Weber
Ophthalmologica, 2023, 246 (2), pp.71-80. ⟨10.1159/000528426⟩
Article dans une revueAbstractIntroduction: Central vision loss due to diabetic macular edema (DME) is related to the macular edema itself, but also in some cases to alterations of the foveal avascular zone (FAZ). The aim of this trial was to study changes in macular vessels in eyes with DME treated with aflibercept using optical coherence tomography angiography (OCTA). Methods: This was a longitudinal, prospective, non-controlled, single arm study. The primary objective was the quantitative assessment of macular vessels over time in patients with DME treated with intravitreal aflibercept during a 48-week follow-up using OCTA. Results: Twenty-six DME eyes from 26 patients were included (mean age, 64.6 years; women, 53.8%; prior anti-VEGF treatment, 46.1%). Each eye received a mean (SD) of 7.2 (2.2) injections. The parameters of the FAZ did not change during the 48-week follow-up: the mean (SD) FAZ area varied from 0.19 (0.19) mm2 at baseline (n=22) to 0.23 (0.20) mm2 at week 48 (n=15), boundary from 1.54 (1.21) to 2.04 (1.20) mm and circularity from 0.45 (0.33) % to 0.57 (0.20) %. There was no change in perfusion density and vessel density of the macula in the 3-mm circle. As expected, mean central retinal thickness, macular volume and visual acuity improved during follow-up. Discussion/Conclusion: No change in macular perfusion was observed in eyes with DME during a 48-week follow-up after intravitreal injections of aflibercept. Randomized controlled trials using OCT-angiography in large populations with extended observation periods are needed to assess changes in macular vessels after intravitreal anti-VEGF treatment.
Gels as adjuvant to non-surgical periodontal therapy: A systematic review and meta-analysis
Pierre-Yves Gegout, Céline Stutz, Olivier Huck
Heliyon, 2023, 9, ⟨10.1016/j.heliyon.2023.e17789⟩
Article dans une revueAbstractObjective: This systematic review and meta-analysis evaluated the effect of the use of available drugs loaded gels used as adjunct to non-surgical periodontal therapy. Methods: Systematic research on PubMed/MEDLINE, Cochrane Central register of Controlled Trials, and Embase databases up to December 2021 was performed. Randomized clinical trials (RCT) which compared the outcomes of scaling and root planing (SRP) + local adjuvant administration (gel) versus SRP + placebo or SRP alone in Humans were included. The primary outcome measures were PPD and CAL changes at 3 months. Results: After articles screening, 77 articles were included and assessed for quality. Then, a metaanalysis was conducted in studies with at least 3 months of follow-up. Clinical improvements were found to be significant for tetracyclines (-0.51 [-0.71;-0.31] p < 0.001), macrolides (-0.71 [-1.04;-0.38] p < 0.001), statins (-0.84 [-0.98;-0.70] p < 0.001), metformin (-1.47 [-1.66;-1.29] p < 0.001) and hyaluronan (-1.61 [-2.28;-0.94] p < 0.001) loaded gels, but non-significant for chlorhexidine (-0.48 [-1.10; 0.14] p = 0.13), metronidazole (-0.50 [-1.20; 0.20] p = 0.16) and bisphosphonates (-0.42 [-1.39; 0.54] p = 0.539) gels. Conclusion: Adjunctive use of drugs loaded gels to non-surgical periodondal treatment could improve PPD reduction at 3 months. However, huge disparities remain when comparing the outcomes of the differents drugs used. Future comparative studies should be considered to determine precisely short and long term benefits of such treatments.
Inhibition of MYC translation through targeting of the newly identified PHB-eIF4F complex as a therapeutic strategy in CLL
Anne Largeot, Vanessa Klapp, Elodie Viry, Susanne Gonder, Iria Fernandez Botana, Arnaud Blomme, Mohaned Benzarti, Sandrine Pierson, Chloé Duculty, Petra Marttila, Marina Wierz, Ernesto Gargiulo, Giulia Pagano, Ning An, Najla El Hachem, Daniel Perez Hernandez, Supriya Chakraborty, Loïc Ysebaert, Jean-Hugues François, Susan Cortez Clemente, Guy Berchem, Dimitar G Efremov, Gunnar Dittmar, Martyna Szpakowska, Andy Chevigné, Petr V Nazarov, Thomas Helleday, Pierre Close, Johannes Meiser, Basile Stamatopoulos, Laurent Désaubry, Jerome Paggetti, Etienne Moussay
Blood, 2023, 141 (26), pp.3166-3183. ⟨10.1182/blood.2022017839⟩
Article dans une revueAbstract<div><p>Inhibition of translation initiation prevents CLL growth in vitro and in vivo, through targeting the MYC oncogene.</p><p>• PHBs directly interact with the translation initiation machinery, filling a gap in the understanding of the crucial roles of these proteins.</p><p>Dysregulation of messenger RNA (mRNA) translation, including preferential translation of mRNA with complex 5′ untranslated regions such as the MYC oncogene, is recognized as an important mechanism in cancer. Here, we show that both human and murine chronic lymphocytic leukemia (CLL) cells display a high translation rate, which is inhibited by the synthetic flavagline FL3, a prohibitin (PHB)-binding drug. A multiomics analysis performed in samples from patients with CLL and cell lines treated with FL3 revealed the decreased translation of the MYC oncogene and of proteins involved in cell cycle and metabolism. Furthermore, inhibiting translation induced a proliferation arrest and a rewiring of MYCdriven metabolism. Interestingly, contrary to other models, the RAS-RAF-(PHBs)-MAPK pathway is neither impaired by FL3 nor implicated in translation regulation in CLL cells. Here, we rather show that PHBs are directly associated with the eukaryotic initiation factor (eIF)4F translation complex and are targeted by FL3. Knockdown of PHBs resembled FL3 treatment. Importantly, inhibition of translation controlled CLL development in vivo, either alone or combined with immunotherapy. Finally, high expression of translation initiation-related genes and PHBs genes correlated with poor survival and unfavorable clinical parameters in patients with CLL. Overall, we demonstrated that translation inhibition is a valuable strategy to control CLL development by blocking the translation of several oncogenic pathways including MYC. We also unraveled a new and direct role of PHBs in translation initiation, thus creating new therapeutic opportunities for patients with CLL. Treg CD4 + T CD8 + T CLL B Eμ-TCL1 splenocytes</p></div>
Rehabilitation protocol after suturing the medial meniscus of a stable knee, a retrospective series of the Francophone Arthroscopy Society.
Henri Favreau, Gaëlle Maroteau, César Praz, Matthieu Ehlinger, Olivier Carnesecchi, Kevin Benad, Marie-Laure Louis, Aa-Eddine Djebara, Nicolas Graveleau, Benjamin Freychet, Sammy Badr, Simon Pelletier, Vincent Pineau, Sophie Putman
Orthopaedics & Traumatology: Surgery & Research, 2023, Orthopaedics & Traumatology: Surgery & Research, pp.103651. ⟨10.1016/j.otsr.2023.103651⟩
Article dans une revueAbstractIntroduction Surgical meniscal lesions are common and 80% of cases involve the medial meniscus of a stable knee. There is a lack of consensus regarding postoperative rehabilitation protocols and a wide variation between restrictive and accelerated rehabilitation protocols exists. The main objective of this study was to report the functional results and the failure rate of the various rehabilitation protocols of the retrospective series of the French Society of Arthroscopy (SFA) after suturing the medial meniscus of a stable knee, considering whether the tear is stable or unstable. Hypothesis Our hypothesis was that accelerated rehabilitation was not associated with an increased risk of failure. Materials and methods This retrospective, multicenter study was conducted across 10 centers (6 private hospitals and 4 public hospitals) including all patients tested for a medial meniscus suture in a stable knee between January 1, 2005 and November 31, 2017 for a minimum follow-up of 5 years. Demographic, imaging, suturing, rehabilitation protocol, and functional TEGNER and KOOS scores were collected. Failure was defined as performing a secondary meniscectomy. Results Three hundred and sixty-seven patients were analyzed with an average follow-up of 82 months. Immediate weight bearing was allowed in 85% of cases, the wearing of a brace was present in almost 74% of cases and flexion was limited in 97% of cases. Inter-group comparisons found a higher suture failure rate in the group with immediate weight bearing (35.6% vs. 20%, p = 0.011) and in the group with a brace (36.9% vs. 22.4%, p < 0.001). There was no difference in the 90° flexion group. The TEGNER score was higher in the non-weight bearing group (6.5 vs. 5.4, p = 0.028) and the KOOS QOL score was higher in the group without a brace (82.2 vs. 66.8, p = 0.025). According to a multivariate analysis, immediate weight bearing (OR = 3.6, [1.62; 7.98], p = 0.0016) and wearing a brace (OR = 2.83, [1.54; 5.02], p < 0.001) were associated with a higher failure rate. In the group of stable lesions, the use of a brace (OR = 3.73, [1.62; 8.56], p = 0.0019) was associated with a higher failure rate. Conclusion No consensus regarding rehabilitation protocols has been established to date and the results of this retrospective series of the SFA affirm the great variability of practices at a national level. Although accelerated rehabilitation protocols are presently favored, the resumption of immediate full weight bearing should be considered with caution, being associated with a higher risk of failure in this series. Deferring weight bearing for 1 month can be considered in the event of a large tear or in the event of damage to the circumferential fibers. Wearing a brace does not seem to have any influence, while limited flexion achieved a consensus. Level of evidence IV, retrospective study.
Patient-Derived Tumoroid for the Prediction of Radiotherapy and Chemotherapy Responses in Non-Small-Cell Lung Cancer
Anasse Nounsi, Joseph Seitlinger, Charlotte Ponté, Julien Demiselle, Ysia Idoux-Gillet, Erwan Pencreach, Michèle Beau-Faller, Véronique Lindner, Jean-Marc Balloul, Eric Quemeneur, Hélène Burckel, Georges Noël, Anne Olland, Florence Fioretti, Pierre Emmanuel Falcoz, Nadia Benkirane-Jessel, Guoqiang Hua
Biomedicines, 2023, 11 (7), pp.1824. ⟨10.3390/biomedicines11071824⟩
Article dans une revueAbstractRadiation therapy and platinum-based chemotherapy are common treatments for lung cancer patients. Several factors are considered for the low overall survival rate of lung cancer, such as the patient's physical state and the complex heterogeneity of the tumor, which leads to resistance to the treatment. Consequently, precision medicines are needed for the patients to improve their survival and their quality of life. Until now, no patient-derived tumoroid model has been reported to predict the efficiency of radiation therapy in non-small-cell lung cancer. Using our patient-derived tumoroid model, we report that this model could be used to evaluate the efficiency of radiation therapy and cisplatin-based chemotherapy in non-small-cell lung cancer. In addition, these results can be correlated to clinical outcomes of patients, indicating that this patient-derived tumoroid model can predict the response to radiotherapy and chemotherapy in non-small-cell lung cancer.
Insulin therapy and blood glucose management in critically ill patients: a 1-day cross-sectional observational study in 69 French intensive care units
Maxime Desgrouas, Julien Demiselle, Laure Stiel, Vincent Brunot, Rémy Marnai, Sacha Sarfati, Maud Fiancette, Fabien Lambiotte, Arnaud W. Thille, Maxime Leloup, Sébastien Clerc, Pascal Beuret, Anne-Astrid Bourion, Johan Daum, Rémi Malhomme, Ramin Ravan, Bertrand Sauneuf, Jean-Philippe Rigaud, Pierre-François Dequin, Thierry Boulain
Annals of Intensive Care, 2023, 13, pp.53. ⟨10.1186/s13613-023-01142-9⟩
Article dans une revueAbstractBackground: Hyperglycaemia is common in critically ill patients, but blood glucose and insulin management may differ widely among intensive care units (ICUs). We aimed to describe insulin use practices and the resulting glycaemic control in French ICUs. We conducted a multicentre 1-day observational study on November 23, 2021, in 69 French ICUs. Adult patients hospitalized for an acute organ failure, severe infection or post-operative care were included. Data were recorded from midnight to 11:59 p.m. the day of the study by 4-h periods. Results: Two ICUs declared to have no insulin protocol. There was a wide disparity in blood glucose targets between ICUs with 35 different target ranges recorded. In 893 included patients we collected 4823 blood glucose values whose distribution varied significantly across ICUs (P < 0.0001). We observed 1135 hyperglycaemias (> 1.8 g/L) in 402 (45.0%) patients, 35 hypoglycaemias (≤ 0.7 g/L) in 26 (2.9%) patients, and one instance of severe hypoglycaemia (≤ 0.4 g/L). Four hundred eight (45.7%) patients received either IV insulin (255 [62.5%]), subcutaneous (SC) insulin (126 [30.9%]), or both (27 [6.6%]). Among patients under protocolized intravenous (IV) insulin, 767/1681 (45.6%) of glycaemias were above the target range. Among patients receiving insulin, short-and long-acting SC insulin use were associated with higher counts of hyperglycaemias as assessed by multivariable negative binomial regression adjusted for the propensity to receive SC insulin: incidence rate ratio of 3.45 (95% confidence interval [CI] 2.97-4.00) (P < 0.0001) and 3.58 (95% CI 2.84-4.52) (P < 0.0001), respectively. Conclusions: Practices regarding blood glucose management varied widely among French ICUs. Administration of short or long-acting SC insulin was not unusual and associated with more frequent hyperglycaemia. The protocolized insulin algorithms used failed to prevent hyperglycaemic events.
Biological Biomarkers of Response and Resistance to Immune Checkpoint Inhibitors in Renal Cell Carcinoma
Claire Masson, Jonathan Thouvenin, Philippe Boudier, Denis Maillet, Sabine Kuchler-Bopp, Philippe Barthélémy, Thierry Massfelder
Cancers, 2023, 15 (12), pp.3159. ⟨10.3390/cancers15123159⟩
Article dans une revueAbstractRenal cell carcinoma (RCC) represents around 2% of cancer-related deaths worldwide per year. RCC is an immunogenic malignancy, and treatment of metastatic RCC (mRCC) has greatly improved since the advent of the new immunotherapy agents, including immune checkpoint inhibitors (ICIs). However, it should be stressed that a large proportion of patients does not respond to these therapies. There is thus an urgent need to identify predictive biomarkers of efficacy or resistance associated with ICIs or ICI/Tyrosine kinase inhibitor (TKI) combinations; this is a major challenge to achieve precision medicine for mRCC in routine practice. To identify potential biomarkers, it is necessary to improve our knowledge on the biology of immune checkpoints. A lot of efforts have been made over the last decade in the field of immuno-oncology. We summarize here the main data obtained in this field when considering mRCC. As for clinical biomarkers, clinician and scientific experts of the domain are facing difficulties in identifying such molecular entities, probably due to the complexity of immuno-oncology and the constant adaptation of tumor cells to their changing environment.
Acute circulatory failure in a patient with profound hyponatraemia
Anaïs Curtiaud, Hamid Merdji, Julien Demiselle
European Heart Journal: Acute Cardiovascular Care, 2023, 12 (6), pp.408-409. ⟨10.1093/ehjacc/zuad043⟩
Article dans une revueAbstractNo abstract available
A female with left lower limb deep vein thrombosis
A. Ledain, P. Kauffmann, P. Le Borgne
European Journal of Internal Medicine, 2023, 112, pp.111-112. ⟨10.1016/j.ejim.2023.03.005⟩
Article dans une revueAbstractNo abstract available
Evaluation of the efficacy and safety of TREM-1 inhibition with nangibotide in patients with COVID-19 receiving respiratory support: the ESSENTIAL randomised, double-blind trial
Bruno François, Simon Lambden, Jean-Jacques Garaud, Marc Derive, Jean-Marie Grouin, Pierre Asfar, Cédric Darreau, Jean-Paul Mira, Jean-Pierre Quenot, Jérémie Lemarié, Emmanuelle Mercier, Jean-Claude Lacherade, Christophe Vinsonneau, Tom Fivez, Julie Helms, Julio Badie, Mitchell Levy, Valérie Cuvier, Margarita Salcedo-Magguilli, Anne-Lise Laszlo-Pouvreau, Pierre-François Laterre, Sébastien Gibot
EClinicalMedicine, 2023, 60, pp.102013. ⟨10.1016/j.eclinm.2023.102013⟩
Article dans une revueAbstractBackground Activation of the TREM-1 pathway is associated with outcome in life threatening COVID-19. Data suggest that modulation of this pathway with nangibotide, a TREM-1 modulator may improve survival in TREM-1 activated patients (identified using the biomarker sTREM-1). Methods Phase 2 double-blind randomized controlled trial assessing efficacy, safety, and optimum treatment population of nangibotide (1.0 mg/kg/h) compared to placebo. Patients aged 18–75 years were eligible within 7 days of SARS-CoV-2 documentation and within 48 h of the onset of invasive or non-invasive respiratory support because of COVID-19-related ARDS. Patients were included from September 2020 to April 2022, with a pause in recruitment between January and August 2021. Primary outcome was the improvement in clinical status defined by a seven-point ordinal scale in the overall population with a planned sensitivity analysis in the subgroup of patients with a sTREM-1 level above the median value at baseline (high sTREM-1 group). Secondary endpoints included safety and all-cause 28-day and day 60 mortality. The study was registered in EudraCT (2020-001504-42) and ClinicalTrials.gov (NCT04429334 ). Findings The study was stopped after 220 patients had been recruited. Of them, 219 were included in the mITT analysis. Nangibotide therapy was associated with an improved clinical status at day 28. Fifty-two (52.0%) of patients had improved in the placebo group compared to 77 (64.7%) of the nangibotide treated population, an odds ratio (95% CI) for improvement of 1.79 (1.02–3.14), p = 0.043. In the high sTREM-1 population, 18 (32.7%) of placebo patients had improved by day 28 compared to 26 (48.1%) of treated patients, an odds ratio (95% CI) of 2.17 (0.96–4.90), p = 0.063 was observed. In the overall population, 28 (28.0%) of placebo treated patients were not alive at the day 28 visit compared to 19 (16.0%) of nangibotide treated patients, an absolute improvement (95% CI) in all-cause mortality at day 28, adjusted for baseline clinical status of 12.1% (1.18–23.05). In the high sTREM-1 population (n = 109), 23 (41.8%) of patients in the placebo group and 12 (22.2%) of patients in the nangibotide group were not alive at day 28, an adjusted absolute reduction in mortality of 19.9% (2.78–36.98). The rate of treatment emergent adverse events was similar in both placebo and nangibotide treated patients. Interpretation Whilst the study was stopped early due to low recruitment rate, the ESSENTIAL study demonstrated that TREM-1 modulation with nangibotide is safe in COVID-19, and results in a consistent pattern of improved clinical status and mortality compared to placebo. The relationship between sTREM-1 and both risk of death and treatment response merits further evaluation of nangibotide using precision medicine approaches in life threatening viral pneumonitis.
An emergency department organizational assessment questionnaire: a Delphi study to create standardized comparators for emergency department directors
Laure Abensur Vuillaume, Stéphane Gennai, Enrique Casalino, Karim Tazarourte, Pascal Bilbault
European Journal of Emergency Medicine, 2023, 30 (3), pp.209-210. ⟨10.1097/MEJ.0000000000001003⟩
Article dans une revueAbstractNo abstract available
The evolution of the contemporary thoracic surgeon: open surgery versus video-assisted thoracic surgery teaching—a clinical practice overview
Joao Santos Silva, Paulo Calvinho, Anne Olland, Pierre-Emmanuel Falcoz
AME Surgical Journal, 2023, 3, pp.25-25. ⟨10.21037/asj-22-21⟩
Article dans une revueAbstractDuring the past few decades, thoracic surgery has been in constant evolution from open to more refined minimally invasive surgery techniques. Teaching and learning, in parallel with proficiency, competence and mastery are subject of debate nowadays. The aim of this paper is to describe the role of open surgery and video-assisted thoracic surgery (VATS) during training of the contemporary thoracic surgeon. The authors describe the learning process in different areas and phases throughout the paper. Open surgery, although less and less frequent, mainly for simple procedures, should not be under evaluated as it provides a unique source of learning opportunities. VATS, although globally adopted as the gold standard, must be part of any training program. Both open surgery and VATS provide complimentary learning methods and techniques and should happen simultaneously, not in a competitive way. Globally, despite the efforts from some institutions and experts, most countries do not present a unified and standardized approach to teaching new procedures. Introduction of standardized methods for quantification of training are recommended.<p>Simulators, dry and wet labs and step-by-step programs should be implemented. The authors recommend implementation of surgical learning programs that have a rationale in their core that involves gradual evolution, including both open surgery and VATS to complement each other, and to create a training that is simultaneous and not competitive.</p>
Prevalence of sleep apnoea in patients with type 1 diabetes and its association with comorbidities and diabetic complications: A French nationwide prospective study
Jean‐louis Pépin, Sébastien Bailly, Joelle Texereau, Emmanuel Sonnet, Sylvie Picard, Bruno Vergès, Christine Coffin Boutreux, Gwenaelle Arnault Ouary, Laurence Kessler, Bruno Guerci, Brigitte Anton Kuchly, Salha Fendri Gaied, Alain Cuperlier, Christel Voinot, Christèle Derrien, Séverine Dubois, Florent Lavergne, Anne Laure Borel, Renaud Tamisier, Pierre‐yves Benhamou
Diabetes, Obesity and Metabolism, 2023, 25 (6), pp.1624-1631. ⟨10.1111/dom.15015⟩
Article dans une revueAbstractAbstract Aim To investigate sleep apnoea prevalence, factors influencing severity, and associations between sleep apnoea severity and micro‐/macrovascular complications in a large population of patients with type 1 diabetes. Materials and methods This French multicentre prospective cohort study was conducted between July 2016 and June 2020. Adults with type 1 diabetes using an insulin pump were eligible. Home care provider nurses collected demographic and clinical data and set up oximetry to determine the oxygen desaturation index (ODI). No, mild–moderate and severe sleep apnoea were defined as ODI <15 events/h, 15 to <30 events/h and ≥30 events/h, respectively. Univariate and multivariate analyses were performed to identify factors associated with sleep apnoea, and associations between sleep apnoea severity and micro‐/macrovascular complications were determined using logistic regression. Results Of 769 participants, 12.4% and 3.4% had mild‐to‐moderate or severe sleep apnoea, respectively. Factors significantly associated with sleep apnoea on multivariate analysis were age, sex, body mass index (BMI) and hypertension. After adjustment for age, sex and BMI, presence of severe sleep apnoea was significantly associated with macrovascular complications (odds ratio vs. no sleep apnoea: 3.96 [95% confidence interval 1.43‐11.11]; P < 0.01), while mild‐to‐moderate sleep apnoea was significantly associated with presence of diabetic retinopathy (odds ratio 2.09 [95% confidence interval 1.10‐3.74]; P < 0.01). Conclusion Sleep apnoea is a significant comorbidity in patients with type 1 diabetes, especially with respect to diabetic complications. This highlights the need for sleep apnoea screening and management in these individuals.
SMARCB1 regulates a TFCP2L1-MYC transcriptional switch promoting renal medullary carcinoma transformation and ferroptosis resistance
Bujamin Vokshi, Guillaume Davidson, Nassim Tawanaie Pour Sedehi, Alexandra Helleux, Marc Rippinger, Alexandre Haller, Justine Gantzer, Jonathan Thouvenin, Philippe Baltzinger, Rachida Bouarich, Valeria Manriquez, Sakina Zaidi, Priya Rao, Pavlos Msaouel, Xiaoping Su, Hervé Lang, Thibault Tricard, Véronique Lindner, Didier Surdez, Jean-Emmanuel Kurtz, Franck Bourdeaut, Nizar Tannir, Irwin Davidson, Gabriel Malouf
Nature Communications, 2023, 14 (1), pp.3034. ⟨10.1038/s41467-023-38472-y⟩
Article dans une revueAbstractAbstract Renal medullary carcinoma (RMC) is an aggressive tumour driven by bi-allelic loss of SMARCB1 and tightly associated with sickle cell trait. However, the cell-of-origin and oncogenic mechanism remain poorly understood. Using single-cell sequencing of human RMC, we defined transformation of thick ascending limb (TAL) cells into an epithelial-mesenchymal gradient of RMC cells associated with loss of renal epithelial transcription factors TFCP2L1 , HOXB9 and MITF and gain of MYC and NFE2L2 -associated oncogenic and ferroptosis resistance programs. We describe the molecular basis for this transcriptional switch that is reversed by SMARCB1 re-expression repressing the oncogenic and ferroptosis resistance programs leading to ferroptotic cell death. Ferroptosis resistance links TAL cell survival with the high extracellular medullar iron concentrations associated with sickle cell trait, an environment propitious to the mutagenic events associated with RMC development. This unique environment may explain why RMC is the only SMARCB1-deficient tumour arising from epithelial cells, differentiating RMC from rhabdoid tumours arising from neural crest cells.
A new tumorgraft panel to accelerate precision medicine in prostate cancer
Claire Béraud, Nadege Bidan, Myriam Lassalle, Hervé Lang, Véronique Lindner, Clémentine Krucker, Julien Masliah-Planchon, Eric Potiron, Philippe Lluel, Thierry Massfelder, Yves Allory, Yolande Misseri
Frontiers in Oncology, 2023, 13, ⟨10.3389/fonc.2023.1130048⟩
Article dans une revueAbstractBackground: Despite the significant advances in the management of advanced prostate cancer (PCa), metastatic PCa is currently considered incurable. For further investigations in precision treatment, the development of preclinical models representing the complex prostate tumor heterogeneity are mandatory. Accordingly, we aimed to establish a resource of patient-derived xenograft (PDX) models that exemplify each phase of this multistage disease for accurate and rapid evaluation of candidate therapies. Methods: Fresh tumor samples along with normal corresponding tissues were obtained directly from patients at surgery. To ensure that the established models reproduce the main features of patient’s tumor, both PDX tumors at multiple passages and patient’s primary tumors, were processed for histological characteristics. STR profile analyses were also performed to confirm patient identity. Finally, the responses of the PDX models to androgen deprivation, PARP inhibitors and chemotherapy were also evaluated. Results: In this study, we described the development and characterization of 5 new PDX models of PCa. Within this collection, hormone-naïve, androgen-sensitive and castration-resistant (CRPC) primary tumors as well as prostate carcinoma with neuroendocrine differentiation (CRPC-NE) were represented. Interestingly, the comprehensive genomic characterization of the models identified recurrent cancer driver alterations in androgen signaling, DNA repair and PI3K, among others. Results were supported by expression patterns highlighting new potential targets among gene drivers and the metabolic pathway. In addition, in vivo results showed heterogeneity of response to androgen deprivation and chemotherapy, like the responses of patients to these treatments. Importantly, the neuroendocrine model has been shown to be responsive to PARP inhibitor. Conclusion: We have developed a biobank of 5 PDX models from hormone-naïve, androgen-sensitive to CRPC primary tumors and CRPC-NE. Increased copy-number alterations and accumulation of mutations within cancer driver genes as well as the metabolism shift are consistent with the increased resistance mechanisms to treatment. The pharmacological characterization suggested that the CRPC-NE could benefit from the PARP inhibitor treatment. Given the difficulties in developing such models, this relevant panel of PDX models of PCa will provide the scientific community with an additional resource for the further development of PDAC research.
Hydrocortisone in Severe Community-Acquired Pneumonia
Pierre-François Dequin, Ferhat Meziani, Jean-Pierre Quenot, Toufik Kamel, Jean-Damien Ricard, Julio Badie, Jean Reignier, Nicholas Heming, Gaëtan Plantefève, Bertrand Souweine, Guillaume Voiriot, Gwenhaël Colin, Jean-Pierre Frat, Jean-Paul Mira, Nicolas Barbarot, Bruno François, Guillaume Louis, Sébastien Gibot, Christophe Guitton, Christophe Giacardi, Sami Hraiech, Sylvie Vimeux, Erwan L’her, Henri Faure, Jean-Etienne Herbrecht, Camille Bouisse, Aurélie Joret, Nicolas Terzi, Arnaud Gacouin, Charlotte Quentin, Mercé Jourdain, Marie Leclerc, Carine Coffre, Hélène Bourgoin, Céline Lengellé, Caroline Caille-Fénérol, Bruno Giraudeau, Amélie Le Gouge
New England Journal of Medicine, 2023, 388 (21), pp.1931-1941. ⟨10.1056/NEJMoa2215145⟩
Article dans une revueAbstractBackgroundWhether the antiinflammatory and immunomodulatory effects of glucocorticoids may decrease mortality among patients with severe community-acquired pneumonia is unclear.MethodsIn this phase 3, multicenter, double-blind, randomized, controlled trial, we assigned adults who had been admitted to the intensive care unit (ICU) for severe community-acquired pneumonia to receive intravenous hydrocortisone (200 mg daily for either 4 or 7 days as determined by clinical improvement, followed by tapering for a total of 8 or 14 days) or to receive placebo. All the patients received standard therapy, including antibiotics and supportive care. The primary outcome was death at 28 days.ResultsA total of 800 patients had undergone randomization when the trial was stopped after the second planned interim analysis. Data from 795 patients were analyzed. By day 28, death had occurred in 25 of 400 patients (6.2%; 95% confidence interval [CI], 3.9 to 8.6) in the hydrocortisone group and in 47 of 395 patients (11.9%; 95% CI, 8.7 to 15.1) in the placebo group (absolute difference, −5.6 percentage points; 95% CI, −9.6 to −1.7; P=0.006). Among the patients who were not undergoing mechanical ventilation at baseline, endotracheal intubation was performed in 40 of 222 (18.0%) in the hydrocortisone group and in 65 of 220 (29.5%) in the placebo group (hazard ratio, 0.59; 95% CI, 0.40 to 0.86). Among the patients who were not receiving vasopressors at baseline, such therapy was initiated by day 28 in 55 of 359 (15.3%) of the hydrocortisone group and in 86 of 344 (25.0%) in the placebo group (hazard ratio, 0.59; 95% CI, 0.43 to 0.82). The frequencies of hospital-acquired infections and gastrointestinal bleeding were similar in the two groups; patients in the hydrocortisone group received higher daily doses of insulin during the first week of treatment.ConclusionsAmong patients with severe community-acquired pneumonia being treated in the ICU, those who received hydrocortisone had a lower risk of death by day 28 than those who received placebo. (Funded by the French Ministry of Health; CAPE COD ClinicalTrials.gov number, NCT02517489. opens in new tab.)
The pathophysiology, diagnosis, and management of sepsis-associated disseminated intravascular coagulation
Toshiaki Iba, Julie Helms, Jean Marie Connors, Jerrold H Levy
Journal of Intensive Care, 2023, 11 (1), pp.24. ⟨10.1186/s40560-023-00672-5⟩
Article dans une revueAbstractBackground: The International Society on Thrombosis and Haemostasis (ISTH) released overt disseminated intravascular coagulation (DIC) diagnostic criteria in 2001. Since then, DIC has been understood as the end-stage consumptive coagulopathy and not the therapeutic target. However, DIC is not merely a decompensated coagulation disorder, but also includes early stages with systemic activation in coagulation. Thus, the ISTH has recently released sepsis-induced coagulopathy (SIC) criteria that can diagnose compensated-phase of coagulopathy with readily available biomarkers. Main body: DIC is a laboratory-based diagnosis due to various critical conditions, although sepsis is the most common underlying disease. The pathophysiology of sepsis-associated DIC is multifactorial, and in addition to coagulation activation with suppressed fibrinolysis, multiple inflammatory responses are initiated by activated leukocytes, platelets, and vascular endothelial cells as part of thromboinflammation. Although overt DIC diagnostic criteria were established by ISTH to diagnose the advanced stage of DIC, additional criteria that can detect an earlier stage of DIC were needed for potential therapeutic considerations. Accordingly, the ISTH introduced SIC criteria in 2019 that are easy to use and require only platelet count, prothrombin time-international normalized ratio, and Sequential Organ Failure Assessment Score. SIC score can be used to evaluate disease severity and determine the timing of potential therapeutic interventions. One of the major disadvantages in treating sepsis-associated DIC is the lack of availability of specific therapeutic approaches beyond treating the underlying infection. Clinical trials to date have failed because included patients who were not coagulopathic. Nevertheless, in addition to infection control, anticoagulant therapy will be the choice for sepsis-associated DIC. Therefore, the efficacy of heparin, antithrombin, and recombinant thrombomodulin has to be proven in future clinical studies. Conclusion: It is necessary to develop a novel therapeutic strategy against sepsis-associated DIC and improve the outcomes. Consequently, we recommend screening and monitoring DIC using SIC scoring system.
Targeting PHB1 to inhibit castration-resistant prostate cancer progression in vitro and in vivo
Junmei Liu, Ranran Zhang, Tong Su, Qianqian Zhou, Lin Gao, Zongyue He, Xin Wang, Jian Zhao, Yuanxin Xing, Feifei Sun, Wenjie Cai, Xinpei Wang, Jingying Han, Ruixi Qin, Laurent Désaubry, Bo Han, Weiwen Chen
Journal of experimental & clinical cancer research, 2023, 42 (1), ⟨10.1186/s13046-023-02695-0⟩
Article dans une revueOccurrence of Severe Arrhythmias in Patients with Non-ST Elevation Acute Coronary Syndrome (NSTE-ACS): A Retrospective Study
Valérie Wilmé, Sébastien Harscoat, François Séverac, Adrien Carmona, Pierrick Le Borgne, Pascal Bilbault, Olivier Morel, Sabrina Kepka
Journal of Clinical Medicine, 2023, 12 (10), pp.3456. ⟨10.3390/jcm12103456⟩
Article dans une revueAbstractBackground: Non-ST elevation acute coronary syndrome (NSTE-ACS) is one of the most frequent manifestations of coronary artery disease. The occurrence of serious heart rhythm disorders (SHRDs) in NSTE-ACS is not well documented. However, continuous heart rhythm monitoring is recommended during the initial management of NSTE-ACS. The targeted monitoring of patients at greater risk for SHRDs could facilitate patients' care in emergency departments (EDs) where the flow of patients is continuously increasing. Methods: This retrospective single-center study included 480 patients from emergency and cardiology departments within the Strasbourg University Hospital between 1 January 2019 and 31 December 2020. The objective was to estimate the frequency of the occurrence of SHRDs among patients with NSTE-ACS. The secondary objective was to highlight the factors associated with a higher risk of SHRDs. Results: The proportion of SHRDs during the first 48 h of hospital care was 2.3% (CI95%: 1.2-4.1%, n = 11). Two time periods were considered: before coronary angiography (1.0%), and during, or after coronary angiography (1.3%). In the first group, two patients required immediate treatment (0.4% of the patients) and no death occurred. In the univariate analysis, the variables significantly associated with SHRDs were age, anticoagulant medication, a decrease in glomerular filtration rate, plasmatic hemoglobin, and left ventricle ejection fraction (LVEF), and an increase in plasmatic troponin, BNP, and CRP levels. In the multivariable analysis, plasmatic hemoglobin > 12 g/dL seemed to be a protective factor for SHRDs. Conclusions: In this study, SHRDs were rare and, most often, spontaneously resolved. These data challenge the relevance of systematic rhythm monitoring during the initial management of patients with NSTE-ACS.
Aortic stenosis and the haemostatic system
Antonin Trimaille, Sandy Hmadeh, Kensuke Matsushita, Benjamin Marchandot, Gilles Kauffenstein, Olivier Morel
Cardiovascular Research, 2023, 119 (6), pp.1310-1323. ⟨10.1093/cvr/cvac192⟩
Article dans une revueAbstractAortic stenosis (AS) affects more than 10% of the population over 80 years of age and constitutes a major risk factor for heart failure, thromboembolic stroke, and death. A better understanding of the disease, including its interaction with the haemostatic system, is a prerequisite to develop prophylactic treatments. AS pathogenesis is a dynamic process involving endothelial dysfunction, inflammation, fibrosis, and calcification. Several studies support the interplay between the components of the haemostatic system such as platelets, the coagulation system, von Willebrand factor, and extracellular micro-particles at each pathophysiological stage of AS. Previous reports have evidenced persistent biological activity of the native valve after transcatheter aortic valve replacement and the subsequent development of microthrombosis that may impact the function of the newly implanted valve. Here, we review the current evidence on the interplay between AS and prothrombotic activity, and we emphasize the clinical consequences of these interactions after aortic valve replacement.
The flavagline FL3 interferes with the association of Annexin A2 with the eIF4F initiation complex and transiently stimulates the translation of annexin A2 mRNA
Ann Kari Grindheim, Sudarshan S. Patil, Canan Nebigil, Laurent Désaubry, Anni Vedeler
Frontiers in Cell and Developmental Biology, 2023, 11, ⟨10.3389/fcell.2023.1094941⟩
Article dans une revueSynthesis of Cytotoxic Iron-Containing Macrocycles Through Unexpected C(sp2) C(sp2) Bonds Formation
Carolina Torres‐gutiérrez, Aldo S Estrada‐montaño, Christophe Orvain, Georg Mellitzer, Christian Gaiddon, Ronan Le Lagadec
European Journal of Inorganic Chemistry, 2023, 26 (23), pp.e202300139. ⟨10.1002/ejic.202300139⟩
Article dans une revueAbstractIn previous reports, it has been demonstrated that cyclometalated iron(II/III) complexes can be prepared by reacting iron(0) precursors and mercurated or brominated derivatives. However, in this report, the reaction between [Fe 3 (CO) 12 ] and mercurated 6-phenyl-2,2'-bipyridine or brominated 2,6-diphenyl-pyridine pincer derivatives led to compounds in which C(sp 2 )À C(sp 2 ) bonds have been formed between two ligands. A 16-electron iron(II) complex (1Cl) bearing a tetradentate ligand originating from the dimerization of 6-phenyl-2,2'-bipyridine was isolated, while a protonated 14-membered macrocycle with [FeBr 4 ] À as counterion (2) was obtained from 2,6-diphenylpyridine. Studies by X-ray diffraction crystallography, NMR, UVvis and cyclic voltammetry confirmed the structures. Additionally, the cytotoxicity of the new compounds toward gastric cancer cell lines was evaluated, and it was established that the presence of the iron(II) center was crucial for an elevated activity.
Keratoconus and the Impact of Treatment on Patients’ Quality of Life: A Qualitative Study
Pierre Fournié, Michaël Acquadro, David Touboul, Béatrice Cochener, Frédéric Chiambaretta, Marc Muraine, Vincent Borderie, Jean-Louis Bourges, Khadra Benmedjahed, Béatrice Tugaut, Diane Bernheim, Tristan Bourcier, Carole Burillon, Thierry David, Bernard Delbosc, Philippe Gain, Louis Hoffart, Marc Labetoulle, Laurent Laroche, Florence Malet, Isabelle Orignac, Pierre-Yves Robert, Gilles Thuret, Bertrand Vabres, François Malecaze, Benoit Arnould
Ophthalmology and Therapy, 2023, 12 (4), pp.1939-1956. ⟨10.1007/s40123-023-00717-w⟩
Article dans une revueAbstractFor a better understanding of the pathophysiology of spondyloarthropathy (SpA), a detailed anatomical description of the sacroiliac joint is required because sacroiliitis is the earliest and most common sign of SpA and an essential feature for the diagnosis of ankylosing spondylitis. Beyond the anatomy, the histopathology of sacroiliac entheses and immunological mechanisms involved in sacroiliitis are crucial for a better understanding of disease causation. In this narrative review, we discuss the core anatomical, histological, and immunohistological observations involved in the development of sacroiliitis, focusing particularly on imaging-based information associated with sacroiliitis. Finally, we try to answer the question of whether at the sacroiliac joint, enthesitis precedes synovitis and subchondral bone changes in SpA.
Microcirculatory dysfunction in cardiogenic shock
Hamid Merdji, Bruno Levy, Christian Jung, Can Ince, Martin Siegemund, Ferhat Meziani
Annals of Intensive Care, 2023, 13 (1), pp.38. ⟨10.1186/s13613-023-01130-z⟩
Article dans une revueAbstractCardiogenic shock is usually defined as primary cardiac dysfunction with low cardiac output leading to critical organ hypoperfusion, and tissue hypoxia, resulting in high mortality rate between 40% and 50% despite recent advances. Many studies have now evidenced that cardiogenic shock not only involves systemic macrocirculation, such as blood pressure, left ventricular ejection fraction, or cardiac output, but also involves significant systemic microcirculatory abnormalities which seem strongly associated with the outcome. Although microcirculation has been widely studied in the context of septic shock showing heterogeneous alterations with clear evidence of macro and microcirculation uncoupling, there is now a growing body of literature focusing on cardiogenic shock states. Even if there is currently no consensus regarding the treatment of microcirculatory disturbances in cardiogenic shock, some treatments seem to show a benefit. Furthermore, a better understanding of the underlying pathophysiology may provide hypotheses for future studies aiming to improve cardiogenic shock prognosis.
Changes in Body Temperature Patterns Are Predictive of Mortality in Septic Shock: An Observational Study
Benjamin Coiffard, Hamid Merdji, Mohamed Boucekine, Julie Helms, Raphaël Clere-Jehl, Jean-Louis Mege, Ferhat Meziani
Biology, 2023, 12 (5), pp.638. ⟨10.3390/biology12050638⟩
Article dans une revueAbstractBiological rhythms are important regulators of immune functions. In intensive care unit (ICU), sepsis is known to be associated with rhythm disruption. Our objectives were to determine factors associated with rhythm disruption of the body temperature and to assess the relationship between temperature and mortality in septic shock patients; In a cohort of septic shock, we recorded body temperature over a 24-h period on day 2 after ICU admission. For each patient, the temperature rhythmicity was assessed by defining period and amplitude, and the adjusted average (mesor) of the temperature by sinusoidal regression and cosinor analysis. Analyses were performed to assess factors associated with the three temperature parameters (period, amplitude, and mesor) and mortality. 162 septic shocks were enrolled. The multivariate analysis demonstrates that the period of temperature was associated with gender (women, coefficient −2.2 h, p = 0.031) and acetaminophen use (coefficient −4.3 h, p = 0.002). The mesor was associated with SOFA score (coefficient −0.05 °C per SOFA point, p = 0.046), procalcitonin (coefficient 0.001 °C per ng/mL, p = 0.005), and hydrocortisone use (coefficient −0.5 °C, p = 0.002). The amplitude was associated with the dialysis (coefficient −0.5 °C, p = 0.002). Mortality at day 28 was associated with lower mesor (adjusted hazard ratio 0.50, 95% CI 0.28 to 0.90; p = 0.02), and higher amplitude (adjusted hazard ratio 5.48, 95% CI 1.66 to 18.12; p = 0.005) of temperature. Many factors, such as therapeutics, influence the body temperature during septic shock. Lower mesor and higher amplitude were associated with mortality and could be considered prognostic markers in ICU. In the age of artificial intelligence, the incorporation of such data in an automated scoring alert could compete with physicians to identify high-risk patients during septic shock.
Air leak: the Achilles tendon of lung resection surgery
Joao Santos Silva, Pierre-Emmanuel Falcoz
European Journal of Cardio-Thoracic Surgery, 2023, 63 (5), ⟨10.1093/ejcts/ezad193⟩
Article dans une revueMultifunctional metallochaperone modifications for targeting subsite cavities in mutant p53-Y220C
Jessica J Miller, Kalvin Kwan, Anaïs Blanchet, Christophe Orvain, Georg Mellitzer, Jason Smith, Cristina Lento, Lucienne Nouchikian, Sabrina Omoregbee-Leichnitz, Marie Sabatou, Derek Wilson, Christian Gaiddon, Tim Storr
Journal of Inorganic Biochemistry, 2023, 242, pp.112164. ⟨10.1016/j.jinorgbio.2023.112164⟩
Article dans une revueAbstractThe p53 protein, known as the 'guardian of the genome', plays an important role in cancer prevention. Unfortunately, p53 mutations result in compromised activity with over 50% of cancers resulting from point mutations to p53. There is considerable interest in mutant p53 reactivation, with the development of small-molecule reactivators showing promise. We have focused our efforts on the common p53 mutation Y220C, which causes protein unfolding, aggregation, and can result in the loss of a structural Zn from the DNA-binding domain. In addition, the Y220C mutant creates a surface pocket that can be stabilized using small molecules. We previously reported the bifunctional ligand L5 as a Zn metallochaperone and reactivator of the p53-Y220C mutant. Herein we report two new ligands L5-P and L5-O that are designed to act as Zn metallochaperones and non-covalent binders in the Y220C mutant pocket. For L5-P the distance between the Zn-binding di-(2-picolyl)amine function and the pocket-binding diiodophenol was extended in comparison to L5, while for L5-O we extended the pocket-binding moiety via attachment of an alkyne function. While both new ligands displayed similar Zn-binding affinity to L5, neither acted as efficient Zn-metallochaperones. However, the new ligands exhibited significant cytotoxicity in the NCI-60 cell line screen as well as in the NUGC3 Y220C mutant cell line. We identified that the primary mode of cytotoxicity is likely reactive oxygen species (ROS) generation for L5-P and L5-O, in comparison to mutant p53 reactivation for L5, demonstrating that subtle changes to the ligand scaffold can change the toxicity pathway.
Brief Report: Severe Sotorasib-Related Hepatotoxicity and Non-Liver Adverse Events Associated With Sequential Anti–Programmed Cell Death (Ligand)1 and Sotorasib Therapy in KRASG12C-Mutant Lung Cancer
Ali Chour, Julie Denis, Céline Mascaux, Maeva Zysman, Laurence Bigay-Game, Aurélie Swalduz, Valérie Gounant, Alexis Cortot, Marie Darrason, Vincent Fallet, Edouard Auclin, Clémence Basse, Claire Tissot, Chantal Decroisette, Pierre Bombaron, Etienne Giroux-Leprieur, Luc Odier, Solenn Brosseau, Quentin Creusot, Marina Gueçamburu, Corentin Meersseman, Adrien Rochand, Adrien Costantini, Claire Marine Gaillard, Eric Wasielewski, Nicolas Girard, Jacques Cadranel, Claire Lafitte, Fanny Lebossé, Michaël Duruisseaux
Journal of Thoracic Oncology, 2023, ⟨10.1016/j.jtho.2023.05.013⟩
Article dans une revueEfficacy of early intrauterine balloon tamponade for immediate postpartum hemorrhage after vaginal delivery: a randomized clinical trial
Patrick Rozenberg, Loïc Sentilhes, François Goffinet, Christophe Vayssiere, Marie-Victoire Senat, Bassam Haddad, Olivier Morel, Charles Garabedian, Alexandre Vivanti, Franck Perrotin, Gilles Kayem, Elie Azria, Pierre Raynal, Eric Verspyck, Nicolas Sananès, Denis Gallot, Florence Bretelle, Aurélien Seco, Norbert Winer, Catherine Deneux-Tharaux
American Journal of Obstetrics and Gynecology, 2023, ⟨10.1016/j.ajog.2023.05.014⟩
Article dans une revueAbstractBackground: Many questions remain about the appropriate use of intrauterine balloon devices in postpartum hemorrhage after vaginal delivery refractory to first-line uterotonics. Available data suggest that early use of intrauterine balloon tamponade might be beneficial. Objective: This study aimed to compare the effect of intrauterine balloon tamponade used in combination with second-line uterotonics vs intrauterine balloon tamponade used after the failure of second-line uterotonic treatment on the rate of severe postpartum hemorrhage in women with postpartum hemorrhage after vaginal delivery refractory to first-line uterotonics. Study design: This multicenter, randomized, controlled, parallel-group, nonblinded trial was conducted at 18 hospitals and enrolled 403 women who had just given birth vaginally at 35 to 42 weeks of gestation. The inclusion criteria were a postpartum hemorrhage refractory to first-line uterotonics (oxytocin) and requiring a second-line uterotonic treatment with sulprostone (E1 prostaglandin). In the study group, the sulprostone infusion was combined with intrauterine tamponade by an ebb balloon performed within 15 minutes of randomization. In the control group, the sulprostone infusion was started alone within 15 minutes of randomization, and if bleeding persisted 30 minutes after the start of sulprostone infusion, intrauterine tamponade using the ebb balloon was performed. In both groups, if the bleeding persisted 30 minutes after the insertion of the balloon, an emergency radiological or surgical invasive procedure was performed. The primary outcome was the proportion of women who either received ≥3 units of packed red blood cells or had a calculated peripartum blood loss of >1000 mL. The prespecified secondary outcomes were the proportions of women who had a calculated blood loss of ≥1500 mL, any transfusion, an invasive procedure and women who were transferred to the intensive care unit. The analysis of the primary outcome with the triangular test was performed sequentially throughout the trial period. Results: At the eighth interim analysis, the independent data monitoring committee concluded that the incidence of the primary outcome did not differ between the 2 groups and stopped inclusions. After 11 women were excluded because they met an exclusion criterion or withdrew their consent, 199 and 193 women remained in the study and control groups, respectively, for the intention-to-treat analysis. The women's baseline characteristics were similar in both groups. Peripartum hematocrit level change, which was needed for the calculation of the primary outcome, was missing for 4 women in the study group and 2 women in the control group. The primary outcome occurred in 131 of 195 women (67.2%) in the study group and 142 of 191 women (74.3%) in the control group (risk ratio, 0.90; 95% confidence interval, 0.79-1.03). The groups did not differ substantially for rates of calculated peripartum blood loss pf ≥1500 mL, any transfusion, invasive procedure, and admission to an intensive care unit. Endometritis occurred in 5 women (2.7%) in the study group and none in the control group (P=.06). Conclusion: The early use of intrauterine balloon tamponade did not reduce the incidence of severe postpartum hemorrhage compared with its use after the failure of second-line uterotonic treatment and before recourse to invasive procedures. Keywords: intrauterine balloon tamponade; postpartum hemorrhage; randomized controlled trial; transfusion; uterotonics; vaginal delivery.
Obesity in adult patients with inflammatory bowel disease: Clinical features and impact on disability. A cross-sectional survey from the GETAID
Rose Al Bacha, Yoram Bouhnik, Melanie Serrero, Jerome Filippi, Xavier Roblin, Anne Bourrier, Guillaume Bouguen, Denis Franchimont, Guillaume Savoye, Anthony Buisson, Edouard Louis, Stephane Nancey, Vered Abitbol, Jean-Marie Reimund, Olivier Dewit, Lucine Vuitton, Nicolas Mathieu, Laurent Peyrin-Biroulet, Cyrielle Gilletta, Matthieu Allez, Stephanie Viennot, Catherine Le Berre, David Laharie, Maria Nachury, Aurelien Amiot, Sara Tadbiri, Charlotte Gagniere, Jenny Tannoury, Benjamin Pariente, Pauline Wils, Yoram Bouhnik, Carmen Stefanescu, Xavier Treton, Carole Martins, Mathieu Uzzan, Melanie Serrero, Jerome Filippi, Xavier Hébuterne, Nadia Arab, Virginie Cluzeau, Xavier Roblin, Emilie Del Tedesco, Laurent Beaugerie, Philippe Seksik, Anne Bourrier, Cecilia Landmann, Julien Kirchgesner, Harry Sokol, Guillaume Bouguen, Laurent Siproudhis, Marie Dewitte, Denis Franchimont, Guillaume Savoye, Anthony Buisson, Edouard Louis, Catherine Reenaers, Stephane Nancey, Gilles Boschetti, Claire Gay, Pauline Danion, Bernard Flourié, Vered Abitbol, Georgia Malamut, Benedicte Caron, Olivier Dewitt, Lucine Vuitton, Nicolas Mathieu, Sandie Pestour, Thomas Chateau, Laurent Peyrin-Biroulet, Camille Zallot, Cyrielle Gilletta, Matthieu Allez, Jean-Marc Gornet, Clotilde Baudry, Stephanie Viennot, Arnaud Bourreille, Caroline Trang-Poisson, Nina Dib, Hedi Brixi, Guillaume Cadiot, Medina Boualit, Claire Painchart, Laurianne Plastaras, Romain Altwegg, Lucile Boivineau, Mathurin Fumery, Ludovic Caillo, David Laharie, Pauline Riviere, Florian Poullenot, Benoit Coffin, Henri Duboc, Stephane Nahon, Noemie Tavernier, Marion Simon, Baya Coulibaly, Morgane Amil, Duveau Nicolas, Sherine Khater, Mehdi Kaassis, Felix Goutorbe, Driffa Moussata, Laurence Picon
Digestive and Liver Disease, 2023, 55 (12), pp.1632-1639. ⟨10.1016/j.dld.2023.05.008⟩
Article dans une revueAbstractBackground: In recent years, an increasing prevalence of obesity in inflammatory bowel disease (IBD) has been observed. However, only a few studies have focused on the impact of overweight and obesity on IBD-related disability.Aims: To identify the factors associated with obese and overweight patients with IBD, including IBD-related disability.Patients and methods: In this cross-sectional study, we included 1704 consecutive patients with IBD in 42 centres affiliated with the Groupe d'Etude Therapeutique des Affections Inflammatoires du tube Digestif (GETAID) using a 4-page questionnaire. Factors associated with obesity and overweight were assessed using univariate and multivariate analyses (odds ratios (ORs) are provided with 95% confidence intervals).Results: The prevalence rates of overweight and obesity were 24.1% and 12.2%, respectively. Multivariable analyses were stratified by age, sex, type of IBD, clinical remission and age at diagnosis of IBD. Overweight was significantly associated with male sex (OR = 0.52, 95% CI [0.39-0.68], p < 0.001), age (OR = 1.02, 95% CI [1.01-1.03], p < 0.001) and body image subscore (OR = 1.15, 95% CI [1.10-1.20], p < 0.001) (Table 2). Obesity was significantly associated with age (OR = 1.03, 95% CI [1.02-1.04], p < 0.001), joint pain subscore (OR = 1.08, 95% CI [1.02-1.14], p < 0.001) and body image subscore (OR = 1.25, 95% CI [1.19-1.32], p < 0.001) (Table 3).Conclusion: The increasing prevalence of overweight and obesity in patients with IBD is associated with age and poorer body image. A holistic approach to IBD patient care should be encouraged to improve IBD-related disability and to prevent rheumatological and cardiovascular complications.
Changes in HCMV immune cell frequency and phenotype are associated with chronic lung allograft dysfunction
Amélie Rousselière, Laurence Delbos, Aurore Foureau, Martine Reynaud-Gaubert, Antoine Roux, Xavier Demant, Jérôme Le Pavec, Romain Kessler, Jean-François Mornex, Jonathan Messika, Loïc Falque, Aurélie Le Borgne, Véronique Boussaud, Adrien Tissot, Sophie Hombourger, Céline Bressollette-Bodin, Béatrice Charreau
Frontiers in Immunology, 2023, 14, pp.1143875. ⟨10.3389/fimmu.2023.1143875⟩
Article dans une revueAbstractHuman cytomegalovirus (HCMV) infection is common and often severe in lung transplant recipients (LTRs), and it is a risk factor associated with chronic lung allograft dysfunction (CLAD). The complex interplay between HCMV and allograft rejection is still unclear. Currently, no treatment is available to reverse CLAD after diagnosis, and the identification of reliable biomarkers that can predict the early development of CLAD is needed. This study investigated the HCMV immunity in LTRs who will develop CLAD. Methods This study quantified and phenotyped conventional (HLA-A2pp65) and HLA-E-restricted (HLA-EUL40) anti-HCMV CD8 + T (CD8 T) cell responses induced by infection in LTRs developing CLAD or maintaining a stable allograft. The homeostasis of immune subsets (B, CD4T, CD8 T, NK, and γδT cells) post-primary infection associated with CLAD was also investigated. Results At M18 post-transplantation, HLA-EUL40 CD8 T responses were less frequently found in HCMV + LTRs (21.7%) developing CLAD (CLAD) than in LTRs (55%) keeping a functional graft (STABLE). In contrast, HLA-A2pp65 CD8 T was equally detected in 45% of STABLE and 47.8% of CLAD LTRs. The frequency of HLA-EUL40 and HLA-A2pp65 CD8 T among blood CD8 T cells shows lower median values in CLAD LTRs. Immunophenotype reveals an altered expression profile for HLA-EUL40 CD8 T in CLAD patients with a decreased expression for CD56 and the acquisition of PD-1. In STABLE LTRs, HCMV primary infection causes a decrease in B cells and inflation of CD8 T, CD57 + /NKG2C + NK, and δ2 − γδT cells. In CLAD LTRs, the regulation of B, total CD8 T, and δ2 + γδT cells is maintained, but total NK, CD57 + /NKG2C + NK, and δ2 − γδT subsets are markedly reduced, while CD57 is overexpressed across T lymphocytes. Conclusions CLAD is associated with significant changes in anti-HCMV immune cell responses. Our findings propose that the presence of dysfunctional HCMV-specific HLA-E-restricted CD8 T cells together with post-infection changes in the immune cell distribution affecting NK and γδT cells defines an early immune signature for CLAD in HCMV + LTRs. Such a signature may be of interest for the monitoring of LTRs and may allow an early stratification of LTRs at risk of CLAD.
Inhibition of MYC translation through targeting of the newly identified PHB-eIF4F complex as therapeutic strategy in CLL
Anne Largeot, Vanessa Klapp, Elodie Viry, Susanne Gonder, Iria Fernandez Botana, Arnaud Blomme, Mohaned Benzarti, Sandrine Pierson, Chloé Duculty, Petra Marttila, Marina Wierz, Ernesto Gargiulo, Giulia Pagano, Ning An, Najla El Hachem, Daniel Perez Hermandez, Supriya Chakraborty, Loïc Ysebaert, Jean-Hugues François, Susan Denisse Cortez Clemente, Guy Berchem, Dimitar G Efremov, Gunnar Dittmar, Martyna Szpakowska, Andy Chevigne, Petr V Nazarov, Thomas Helleday, Pierre Close, Johannes Meiser, Basile Stamatopoulos, Laurent Désaubry, Jerome Paggetti, Etienne Moussay
Blood, 2023, 141 (26), ⟨10.1182/blood.2022017839⟩
Article dans une revueSGLT2 inhibition ameliorates nano plastics-induced premature endothelial senescence and dysfunction
Bikalpa Dhakal, Saugat Shiwakoti, Eun-Young Park, Ki-Woon Kang, Valérie Schini-Kerth, Sun-Hwa Park, Hye-Young Ji, Joon Seok Park, Ju-Young Ko, Min-Ho Oak
Scientific Reports, 2023, 13 (1), pp.6256. ⟨10.1038/s41598-023-33086-2⟩
Article dans une revueAbstractNano plastics (NPs) have been a significant threat to human health and are known to cause premature endothelial senescence. Endothelial senescence is considered one of the primary risk factors contributing to numerous cardiovascular disorders. Recent studies have suggested that inhibition of sodium glucose co-transporter (SGLT2) ameliorates endothelial senescence and dysfunction. Therefore, our study intends to explore the role of SGLT2 in NPs-induced endothelial senescence and dysfunction. Porcine coronary artery and its endothelial cells were treated with NPs in the presence or absence of Enavogliflozin (ENA), a SGLT2 inhibitor and then SGLTs expression, senescence markers and vascular function were evaluated. NPs significantly up-regulated SGLT2 and ENA significantly decreased NPs-induced senescence-associated-β-gal activity, cell-cycle arrest, and senescence markers p53 and p21 suggesting that inhibition of SGLT2 prevents NPs-induced endothelial senescence. In addition, ENA decreased the formation of reactive oxygen species with the downregulation of Nox2, and p22phox. Furthermore, SGLT2 inhibition also up regulated the endothelial nitric oxide synthase expression along with improving vascular function. In conclusion, premature endothelial senescence by NPs is, at least in part, associated with SGLT2 and it could be a potential therapeutic target for preventing and/or treating environmental pollutants-induced cardiovascular disorders mediated by endothelial senescence and dysfunction.
Combination of Primary Hemostatic Disorders and Atrial Fibrillation Increases Bleeding Events Following Transcatheter Aortic Valve Replacement
Kensuke Matsushita, Benjamin Marchandot, Marion Kibler, Adrien Carmona, Truong Dinh Phi, Joe Heger, Antonin Trimaille, Sébastien Hess, Laurent Sattler, Mickael Ohana, Antje Reydel, Laurence Jesel, Patrick Ohlmann, Olivier Morel
TH Open : Companion Journal To Thrombosis and Haemostasis, 2023, 07 (02), pp.e117-e127. ⟨10.1055/a-2068-5783⟩
Article dans une revueAbstractBackground: Patients with atrial fibrillation (AF) are likely to have a poor prognosis including bleedings following transcatheter aortic valve replacement (TAVR). Closure time of adenosine diphosphate (CT-ADP) is a primary hemostasis point-of-care test and is a predictor of bleeding events following TAVR. We aimed to evaluate the impact of ongoing primary hemostatic disorders on bleeding events in TAVR patients with AF. Methods: We enrolled 878 patients from our prospective registry. The primary endpoint was VARC-2 major/life-threatening bleeding complications (MLBCs) at 1 year after TAVR and secondary endpoint was major adverse cardiac and cerebrovascular events (MACCEs) at 1 year, defined as a composite of all-cause death, myocardial infarction, stroke, and heart failure hospitalization. Ongoing primary hemostatic disorder was defined by a postprocedural CT-ADP >180 seconds. Results: Patients with AF had a higher incidence of MLBCs (20 vs. 12%, p = 0.002), MACCE (29 vs. 20%, p = 0.002), and all-cause mortality (15 vs. 8%, p = 0.002) within 1 year compared to non-AF patients. When the cohort was split into four subgroups according to AF and CT-ADP >180 seconds, patients with AF and CT-ADP >180 seconds had the highest risk of MLBCs and MACCE. Multivariate Cox regression analysis confirmed that the patients with AF and CT-ADP >180 seconds had 3.9-fold higher risk of MLBCs, whereas those patients were no longer associated with MACCE after the adjustment. Conclusion: In TAVR patients, AF with postprocedural CT-ADP >180 seconds was strongly associated with MLBCs following TAVR. Our study suggests that persistent primary hemostatic disorders contribute to a higher risk of bleeding events particularly in AF patients.
An Enhancer Demethylator Phenotype Converged to Immune Dysfunction and Resistance to Immune Checkpoint Inhibitors in Clear-Cell Renal Cell Carcinomas
Xiaofan Lu, Yann Vano, Alexandra Helleux, Xiaoping Su, Veronique Lindner, Guillaume Davidson, Roger Mouawad, Jean-Philippe Spano, Morgan Rouprêt, Reza Elaidi, Eva Compérat, Virginie Verkarre, Chengming Sun, Christine Chevreau, Mostefa Bennamoun, Hervé Lang, Thibault Tricard, Wenxuan Cheng, Li Xu, Irwin Davidson, Fangrong Yan, Wolf Herman Fridman, Catherine Sautes-Fridman, Stéphane Oudard, Gabriel G. Malouf
Clinical Cancer Research, 2023, 29 (7), pp.1279-1291. ⟨10.1158/1078-0432.CCR-22-2133⟩
Article dans une revueAbstractPURPOSE: Immune checkpoint inhibitors (ICI) have revolutionized the treatment of patients with clear-cell renal cell carcinomas (ccRCC). Although analyses of transcriptome, genetic alterations, and the tumor microenvironment (TME) have shed light into mechanisms of response and resistance to these agents, the role of epigenetic alterations in this process remains fully unknown. EXPERIMENTAL DESIGN: We investigated the methylome of six ccRCC cohorts as well as one cell line dataset. Of note, we took advantage of the BIONIKK trial aiming to tailor treatments according to Paris Descartes 4-gene expression subgroups, and performed Illumina EPIC profiling for 46 samples related to patients treated with ipilimumab plus nivolumab, and 17 samples related to patients treated with sunitinib. RESULTS: A group of tumors associated with enhancer demethylation was discovered, namely TED. TED was associated with tumors with sarcomatoid differentiation and poor clinical outcome. TED harbored TET1 promoter demethylation, activated the gene expression signature of epithelial-mesenchymal transition and IL6/JAK/STAT3 pathways, and displayed a TME characterized by both immune activation and suppressive populations, fibroblast infiltration, and endothelial depletion. In addition, TED was a predictive factor of resistance to the combination of first-line ipilimumab-nivolumab in the BIONIKK clinical trial. Finally, TED was associated with activation of specific regulons, which we also found to be predictive of resistance to immunotherapy in an independent cohort. CONCLUSIONS: We report on the discovery of a novel epigenetic phenotype associated with resistance to ICIs that may pave the way to better personalizing patients' treatments. See related commentary by Zhou and Kim, p. 1170.
Metabolic Benefit of Teleconsultation for Diabetes Management During the COVID-19 Pandemic: A French Observational Prospective Study
Laurent Meyer, Mathilde Flocard, Thibault Fabacher, Thibault Bahougne, Françoise Ortéga, Dominique Paris, Marion Munch, Sylvie Boullu-Sanchis, Clémence Canel, Claire Chappaz, Lamia Amoura, Nicolas Meyer, Laurence Kessler
Telemedicine and e-Health, 2023, 29 (4), pp.612-616. ⟨10.1089/tmj.2022.0090⟩
Article dans une revueAbstractAim: To investigate the impact of teleconsultation on glycemic control in patients with diabetes during the COVID-19 pandemic. Methods: In this observational prospective study, the main outcome was the comparison of glycated hemoglobin (HbA1c) between patients with or without teleconsultation at 6-month follow-up. Results: From March 17 to May 31, 2020, 610 patients were included, 456 were followed-up using Teleconsultation présent (TC+) and 154 not using No Teleconsultation (TC−). Patients of TC+ Group were younger, 57 ± 17 versus 65 ± 15.5 years (p < 0.001), with a lower body mass index, 28 ± 6.2 kg/m2 versus 30 ± 5.8 kg/m2, compared to those of TC− Group (p < 0.001). HbA1c were comparable between the two groups: 7.35 ± 0.27% for TC+ versus 7.48 ± 0.22% for TC− Group. At 6-month follow-up, HbA1c was lower in TC+ versus TC− Group: 7.21 ± 0.15% versus 7.6 ± 0.18% (p = 0.004). Conclusion: Our findings point toward the feasibility and usefulness of teleconsultation for the follow-up of patients with diabetes in such exceptional circumstances.
The Angers CT Score is a Risk Factor for the Failure of the Conservative Management of Adhesive Small Bowel Obstruction: A Prospective Observational Multicentric Study
Anita Paisant, Jeanne Burgmaier, Paul Calame, Mélanie Loison, Sébastien Molière, Cécile Brigand, Dihia Belabbas, Emilie Duchalais, Jean-Marc Regimbeau, Thierry Yzet, Arnaud Alves, Audrey Fohlen, Damien Bergeat, Estelle Vauclair, Julie Pellegrini, Emilia Ragot, Alexandre Lansier, Emeric Abet, Alexandre Nevot, Pascal Rousset, Mehdi Ouaissi, Marie Besson, Maxime Ronot, Massimo Giacca, Edouard Girard, Yann Tessier, Damien Massalou, Florent Poirier, Zaher Lakkis, Christophe Aubé, Jean Francois Hamel, Guillaume Passot, Aurélien Venara
World Journal of Surgery, 2023, 47 (4), pp.975-984. ⟨10.1007/s00268-023-06906-9⟩
Article dans une revueAbstractBackground: Identifying the 30% of adhesive small bowel obstructions (aSBO) for which conservative management will require surgery is essential. The association between the previously described radiological score and failure of the conservative management of aSBO remains to be confirmed in a large prospective multicentric cohort. Our aim was to assess the risk factors of failure of the conservative management of aSBO considering the radiological score.Material and methods: This prospective observational study took place in 15 French centers over 3 months. Consecutive patients experiencing aSBO with no early surgery were included. The six radiological features from the Angers radiological computed tomography (CT) score were noted (beak sign, closed loop, focal or diffuse intraperitoneal liquid, focal or diffuse mesenteric haziness, focal or diffuse mesenteric liquid, and diameter of the most dilated small bowel loop > 40 mm).Results: Two hundred and seventy nine patients with aSBO were screened. Sixty patients (21.5%) underwent early surgery, and 219 (78.5%) had primary conservative management. In the end, 218 patients were included in the analysis of the risk factors for conservative treatment failure. Among them, 162 (74.3%) had had successful management while for 56 (25.7%) management had failed. In multivariate analysis, a history of surgery was not a significant risk factor for the failure of conservative treatment (OR = 0.11; 95%CI = 0-1.23). A previous episode of aSBO was protective against the failure of conservative treatment (OR = 0.36; 95%CI = 0.15-0.85) and an Angers CT score ≥ 5 as the only individual risk factor (OR = 2.39; 95%CI = 1.01-5.69).Conclusion: The radiological score of aSBO is a promising tool in improving the management of aSBO patients. A first episode of aSBO and/or a radiological score ≥5 should lead physicians to consider early surgical management.
Myokines: Crosstalk and Consequences on Liver Physiopathology
Aurore Dumond Bourie, Jean-Baptiste Potier, Michel Pinget, Karim Bouzakri
Nutrients, 2023, 15 (7), pp.1729. ⟨10.3390/nu15071729⟩
Article dans une revueAbstractNon-alcoholic fatty liver disease (NAFLD) is a chronic liver disease mainly characterized by the hepatic accumulation of lipid inducing a deregulation of β-oxidation. Its advanced form is non-alcoholic steatohepatitis (NASH), which, in addition to lipid accumulation, induces hepatocellular damage, oxidative stress and fibrosis that can progress to cirrhosis and to its final stage: hepatocellular carcinoma (HCC). To date, no specific therapeutic treatment exists. The implications of organ crosstalk have been highlighted in many metabolic disorders, such as diabetes, metabolic-associated liver diseases and obesity. Skeletal muscle, in addition to its role as a reservoir and consumer of energy and carbohydrate metabolism, is involved in this inter-organs’ communication through different secreted products: myokines, exosomes and enzymes, for example. Interestingly, resistance exercise has been shown to have a beneficial impact on different metabolic pathways, such as lipid oxidation in different organs through their secreted products. In this review, we will mainly focus on myokines and their effects on non-alcoholic fatty liver disease, and their complication: non-alcoholic steatohepatitis and HCC.
Prevalence and determinants of fatigue in patients with IBD: a cross-sectional survey from the GETAID
Aurelien Amiot, Sayma Chaibi, Yoram Bouhnik, Melanie Serrero, Jerome Filippi, Xavier Roblin, Anne Bourrier, Guillaume Bouguen, Denis Franchimont, Guillaume Savoye, Anthony Buisson, Edouard Louis, Stephane Nancey, Vered Abitbol, Jean-Marie Reimund, Olivier Dewit, Lucine Vuitton, Nicolas Mathieu, Laurent Peyrin-Biroulet, Cyrielle Gilletta, Matthieu Allez, Stephanie Viennot, Catherine Le Berre, Nina Dib, Hedia Brixi, Claire Painchart, Laurianne Plastaras, Romain Altwegg, Mathurin Fumery, Ludovic Caillo, David Laharie, Maria Nachury
Journal of Crohn's and Colitis, 2023, 17 (9), pp.1418-1425. ⟨10.1093/ecco-jcc/jjad060⟩
Article dans une revueAbstractBackground: Fatigue is commonly reported by patients with inflammatory bowel disease [IBD], but the determinants of IBD-related fatigue have yet to be determined. Aims: To identify the factors associated with fatigue in a large population of patients with IBD. Patients and methods: Fatigue and nine other IBD-related disability dimensions were assessed in a cohort of 1704 consecutive patients with IBD using the IBD-disk questionnaire in a cross-sectional survey of 42 French and Belgian centres. Fatigue and severe fatigue were defined as energy subscores >5 and >7, respectively. Determinants of fatigue were assessed using univariate and multivariate analyses (odds ratios [ORs] are provided with 95% confidence intervals). Results: The prevalence rates of fatigue and severe fatigue were 54.1% and 37.1%, respectively. Both fatigue and severe fatigue were significantly higher in patients with active disease than in patients with inactive disease [64.9% vs 44.7% and 47.4% vs 28.6%, respectively; p < 0.001 for both comparisons]. In the multivariate analysis stratified by age, sex, type of IBD and IBD activity, fatigue was associated with age >40 years (OR = 0.71 [0.54-0.93]), female sex (OR = 1.48 [1.13-1.93]) and IBD-related sick leave (OR = 1.61 [1.19-2.16]), and joint pain (OR = 1.60 [1.17-2.18]), abdominal pain (OR = 1.78 [1.29-2.45]), regulating defecation (OR = 1.67 [1.20-2.32]), education and work (OR = 1.96 [1.40-2.75]), body image (OR = 1.38 [1.02-1.86]), sleep (OR = 3.60 [2.66-4.88]) and emotions (OR = 3.60 [2.66-4.88]) subscores >5. Conclusion: Determinants of fatigue are not restricted to IBD-related factors but also include social factors, sleep and emotional disturbances, thus supporting a holistic approach to IBD patient care.
Lymphocyte-to-C-Reactive Protein (LCR) Ratio Is Not Accurate to Predict Severity and Mortality in Patients with COVID-19 Admitted to the ED
Laure Abensur Vuillaume, François Lefebvre, Axel Benhamed, Amandine Schnee, Mathieu Hoffmann, Fernanda Godoy Falcao, Nathan Haber, Jonathan Sabah, Charles-Eric Lavoignet, Pierrick Le Borgne
International Journal of Molecular Sciences, 2023, 24 (6), pp.5996. ⟨10.3390/ijms24065996⟩
Article dans une revueAbstractHealth care systems worldwide have been battling the ongoing COVID-19 pandemic. Since the beginning of the COVID-19 pandemic, Lymphocytes and CRP have been reported as markers of interest. We chose to investigate the prognostic value of the LCR ratio as a marker of severity and mortality in COVID-19 infection. Between 1 March and 30 April 2020, we conducted a multicenter, retrospective cohort study of patients with moderate and severe coronavirus disease 19 (COVID-19), all of whom were hospitalized after being admitted to the Emergency Department (ED). We conducted our study in six major hospitals of northeast France, one of the outbreak's epicenters in Europe. A total of 1035 patients with COVID-19 were included in our study. Around three-quarters of them (76.2%) presented a moderate form of the disease, while the remaining quarter (23.8%) presented a severe form requiring admission to the ICU. At ED admission, the median LCR was significantly lower in the group presenting severe disease compared to that with moderate disease (versus 6.24 (3.24-12) versus 12.63 ((6.05-31.67)), p < 0.001). However, LCR was neither associated with disease severity (OR: 0.99, CI 95% (0.99-1)), p = 0.476) nor mortality (OR: 0.99, CI 95% (0.99-1)). In the ED, LCR, although modest, with a threshold of 12.63, was a predictive marker for severe forms of COVID-19.
Limitation of life-sustaining therapies in critically ill patients with COVID-19: a descriptive epidemiological investigation from the COVID-ICU study
Mikhael Giabicani, Christophe Le Terrier, Antoine Poncet, Bertrand Guidet, Jean-Philippe Rigaud, Jean-Pierre Quenot, Marie-France Mamzer, Jérôme Pugin, Emmanuel Weiss, Simon Bourcier, Alain Mercat, Pierre Asfar, François Beloncle, Julien Demiselle, Tài Pham, Arthur Pavot, Xavier Monnet, Christian Richard, Alexandre Demoule, Martin Dres, Julien Mayaux, Alexandra Beurton, Cédric Daubin, Richard Descamps, Aurélie Joret, Damien Du Cheyron, Frédéric Pene, Jean-Daniel Chiche, Mathieu Jozwiak, Paul Jaubert, Guillaume Voiriot, Muriel Fartoukh, Marion Teulier, Clarisse Blayau, Erwen L’her, Cécile Aubron, Laetitia Bodenes, Nicolas Ferriere, Johann Auchabie, Anthony Le Meur, Sylvain Pignal, Thierry Mazzoni, Jean-Pierre Quenot, Pascal Andreu, Jean-Baptiste Roudau, Marie Labruyère, Saad Nseir, Sébastien Preau, Julien Poissy, Daniel Mathieu, Sarah Benhamida, Rémi Paulet, Nicolas Roucaud, Martial Thyrault, Florence Daviet, Sami Hraiech, Gabriel Parzy, Aude Sylvestre, Sébastien Jochmans, Anne-Laure Bouilland, Mehran Monchi, Marc Danguy Des Déserts, Quentin Mathais, Gwendoline Rager, Pierre Pasquier, Jean Reignier, Amélie Seguin, Charlotte Garret, Emmanuel Canet, Jean Dellamonica, Clément Saccheri, Romain Lombardi, Yanis Kouchit, Sophie Jacquier, Armelle Mathonnet, Mai-Ahn Nay, Isabelle Runge, Frédéric Martino, Laure Flurin, Amélie Rolle, Michel Carles, Rémi Coudroy, Arnaud Thille, Jean-Pierre Frat, Maeva Rodriguez, Pascal Beuret, Audrey Tientcheu, Arthur Vincent, Florian Michelin, Fabienne Tamion, Dorothée Carpentier, Déborah Boyer, Gaetan Beduneau, Valérie Gissot, Stéphan Ehrmann, Charlotte Salmon Gandonniere, Djlali Elaroussi, Agathe Delbove, Yannick Fedun, Julien Huntzinger, Eddy Lebas, Grâce Kisoka, Céline Grégoire, Stella Marchetta, Bernard Lambermont, Laurent Argaud, Thomas Baudry, Pierre-Jean Bertrand, Auguste Dargent, Christophe Guitton, Nicolas Chudeau, Mickaël Landais, Cédric Darreau, Alexis Ferre, Antoine Gros, Guillaume Lacave, Fabrice Bruneel, Mathilde Neuville, Jérôme Devaquet, Guillaume Tachon, Richard Gallot, Riad Chelha, Arnaud Galbois, Anne Jallot, Ludivine Chalumeau Lemoine, Khaldoun Kuteifan, Valentin Pointurier, Louise-Marie Jandeaux, Joy Mootien, Charles Damoisel, Benjamin Sztrymf, Matthieu Schmidt, Alain Combes, Juliette Chommeloux, Charles Edouard Luyt, Frédérique Schortgen, Leon Rusel, Camille Jung, Florent Gobert, Damien Vimpere, Lionel Lamhaut, Bertrand Sauneuf, Liliane Charrrier, Julien Calus, Isabelle Desmeules, Benoît Painvin, Jean-Marc Tadie, Vincent Castelain, Baptiste Michard, Jean-Etienne Herbrecht, Mathieu Baldacini, Vincent Castelain, Baptiste Michard, Jean-Etienne Herbrecht, Mathieu Baldacini, Nicolas Weiss, Sophie Demeret, Clémence Marois, Benjamin Rohaut, Pierre-Henri Moury, Anne-Charlotte Savida, Emmanuel Couadau, Mathieu Série, Nica Alexandru, Cédric Bruel, Candice Fontaine, Sonia Garrigou, Juliette Courtiade Mahler, Maxime Leclerc, Michel Ramakers, Pierre Garçon, Nicole Massou, Ly van Vong, Juliane Sen, Nolwenn Lucas, Franck Chemouni, Annabelle Stoclin, Alexandre Avenel, Henri Faure, Angélie Gentilhomme, Sylvie Ricome, Paul Abraham, Céline Monard, Julien Textoris, Thomas Rimmele, Florent Montini, Gabriel Lejour, Thierry Lazard, Isabelle Etienney, Younes Kerroumi, Claire Dupuis, Marine Bereiziat, Elisabeth Coupez, François Thouy, Clément Hoffmann, Nicolas Donat, Anne Chrisment, Rose-Marie Blot, Antoine Kimmoun, Audrey Jacquot, Matthieu Mattei, Bruno Levy, Ramin Ravan, Loïc Dopeux, Jean-Mathias Liteaudon, Delphine Roux, Brice Rey, Radu Anghel, Deborah Schenesse, Vincent Gevrey, Jermy Castanera, Philippe Petua, Benjamin Madeux, Otto Hartman, Michael Piagnerelli, Anne Joosten, Cinderella Noel, Patrick Biston, Thibaut Noel, Gurvan Bouar, Messabi Boukhanza, Elsa Demarest, Marie-France Bajolet, Nathanaël Charrier, Audrey Quenet, Cécile Zylberfajn, Nicolas Dufour, Buno Mégarbane, Sébastian Voicu, Nicolas Deye, Isabelle Malissin, François Legay, Matthieu Debarre, Nicolas Barbarot, Pierre Fillatre, Bertrand Delord, Thomas Laterrade, Tahar Saghi, Wilfried Pujol, Pierre Julien Cungi, Pierre Esnault, Mickael Cardinale, Vivien Hong Tuan Ha, Grégory Fleury, Marie-Ange Brou, Daniel Zafimahazo, David Tran-Van, Patrick Avargues, Lisa Carenco, Nicolas Robin, Alexandre Ouali, Lucie Houdou, Christophe Le Terrier, Noémie Suh, Steve Primmaz, Jérome Pugin, Emmanuel Weiss, Tobias Gauss, Jean-Denis Moyer, Catherine Paugam Burtz, Béatrice La Combe, Rolland Smonig, Jade Violleau, Pauline Cailliez, Jonathan Chelly, Antoine Marchalot, Cécile Saladin, Christelle Bigot, Pierre-Marie Fayolle, Jules Fatséas, Amr Ibrahim, Dabor Resiere, Rabih Hage, Clémentine Cholet, Marie Cantier, Pierre Trouiler, Philippe Montravers, Brice Lortat-Jacob, Sebastien Tanaka, Alexy Tran Dinh, Jacques Duranteau, Anatole Harrois, Guillaume Dubreuil, Marie Werner, Anne Godier, Sophie Hamada, Diane Zlotnik, Hélène Nougue, Armand Mekontso-Dessap, Guillaume Carteaux, Keyvan Razazi, Nicolas de Prost, Nicolas Mongardon, Meriam Lamraoui, Claire Alessandri, Quentin de Roux, Charles de Roquetaillade, Benjamin Chousterman, Alexandre Mebazaa, Etienne Gayat, Marc Garnier, Emmanuel Pardo, Lea Satre-Buisson, Christophe Gutton, Elise Yvin, Clémence Marcault, Elie Azoulay, Michael Darmon, Hafid Ait Oufella, Geoffroy Hariri, Tomas Urbina, Sandie Mazerand, Nicholas Heming, Francesca Santi, Pierre Moine, Djillali Annane, Adrien Bouglé, Edris Omar, Aymeric Lancelot, Emmanuelle Begot, Gaétan Plantefeve, Damien Contou, Hervé Mentec, Olivier Pajot, Stanislas Faguer, Olivier Cointault, Laurence Lavayssiere, Marie-Béatrice Nogier, Matthieu Jamme, Claire Pichereau, Jan Hayon, Hervé Outin, François Dépret, Maxime Coutrot, Maité Chaussard, Lucie Guillemet, Pierre Goffin, Romain Thouny, Julien Guntz, Laurent Jadot, Romain Persichini, Vanessa Jean-Michel, Hugues Georges, Thomas Caulier, Gaël Pradel, Marie-Hélène Hausermann, Thi My Hue Nguyen-Valat, Michel Boudinaud, Emmanuel Vivier, Sylvène Rosseli, Gaël Bourdin, Christian Pommier, Marc Vinclair, Simon Poignant, Sandrine Mons, Wulfran Bougouin, Franklin Bruna, Quentin Maestraggi, Christian Roth, Laurent Bitker, François Dhelft, Justine Bonnet-Chateau, Mathilde Filippelli, Tristan Morichau-Beauchant, Stéphane Thierry, Charlotte Le Roy, Mélanie Saint Jouan, Bruno Goncalves, Aurélien Mazeraud, Matthieu Daniel, Tarek Sharshar, Cyril Cadoz, Rostane Gaci, Sébastien Gette, Guillaune Louis, Sophe-Caroline Sacleux, Marie-Amélie Ordan, Aurélie Cravoisy, Marie Conrad, Guilhem Courte, Sébastien Gibot, Younès Benzidi, Claudia Casella, Laurent Serpin, Jean-Lou Setti, Marie-Catherine Besse, Anna Bourreau, Jérôme Pillot, Caroline Rivera, Camille Vinclair, Marie-Aline Robaux, Chloé Achino, Marie-Charlotte Delignette, Tessa Mazard, Frédéric Aubrun, Bruno Bouchet, Aurélien Frérou, Laura Muller, Charlotte Quentin, Samuel Degoul, Xavier Stihle, Claude Sumian, Nicoletta Bergero, Bernard Lanaspre, Hervé Quintard, Eve Marie Maiziere, Pierre-Yves Egreteau, Guillaume Leloup, Florin Berteau, Marjolaine Cottrel, Marie Bouteloup, Matthieu Jeannot, Quentin Blanc, Julien Saison, Isabelle Geneau, Romaric Grenot, Abdel Ouchike, Pascal Hazera, Anne-Lyse Masse, Suela Demiri, Corinne Vezinet, Elodie Baron, Deborah Benchetrit, Antoine Monsel, Grégoire Trebbia, Emmanuelle Schaack, Raphaël Lepecq, Mathieu Bobet, Christophe Vinsonneau, Thibault Dekeyser, Quentin Delforge, Imen Rahmani, Bérengère Vivet, Jonathan Paillot, Lucie Hierle, Claire Chaignat, Sarah Valette, Benoït Her, Jennifier Brunet, Mathieu Page, Fabienne Boiste, Anthony Collin, Florent Bavozet, Aude Garin, Mohamed Dlala, Kais Mhamdi, Bassem Beilouny, Alexandra Lavalard, Severine Perez, Benoit Veber, Pierre-Gildas Guitard, Philippe Gouin, Anna Lamacz, Fabienne Plouvier, Bertrand Delaborde, Aïssa Kherchache, Amina Chaalal, Jean-Damien Ricard, Marc Amouretti, Santiago Freita-Ramos, Damien Roux, Jean-Michel Constantin, Mona Assefi, Marine Lecore, Agathe Selves, Florian Prevost, Christian Lamer, Ruiying Shi, Lyes Knani, Sébastien Pili Floury, Lucie Vettoretti, Michael Levy, Lucile Marsac, Stéphane Dauger, Sophie Guilmin-Crépon, Hadrien Winiszewski, Gael Piton, Thibaud Soumagne, Gilles Capellier, Jean-Baptiste Putegnat, Frédérique Bayle, Maya Perrou, Ghyslaine Thao, Guillaume Géri, Cyril Charron, Xavier Repessé, Antoine Vieillard-Baron, Mathieu Guilbart, Pierre-Alexandre Roger, Sébastien Hinard, Pierre-Yves Macq, Kevin Chaulier, Sylvie Goutte, Patrick Chillet, Anaïs Pitta, Barbara Darjent, Amandine Bruneau, Sigismond Lasocki, Maxime Leger, Soizic Gergaud, Pierre Lemarie, Nicolas Terzi, Carole Schwebel, Anaïs Dartevel, Louis-Marie Galerneau, Jean-Luc Diehl, Caroline Hauw-Berlemont, Nicolas Péron, Emmanuel Guérot, Abolfazl Mohebbi Amoli, Michel Benhamou, Jean-Pierre Deyme, Olivier Andremont, Diane Lena, Julien Cady, Arnaud Causeret, Arnaud de la Chapelle, Christophe Cracco, Stéphane Rouleau, David Schnell, Camille Foucault, Cécile Lory, Thibault Chapelle, Vincent Bruckert, Julie Garcia, Abdlazize Sahraoui, Nathalie Abbosh, Caroline Bornstain, Pierre Pernet, Florent Poirson, Ahmed Pasem, Philippe Karoubi, Virginie Poupinel, Caroline Gauthier, François Bouniol, Philippe Feuchere, Florent Bavozet, Anne Heron, Serge Carreira, Malo Emery, Anne Sophie Le Floch, Luana Giovannangeli, Nicolas Herzog, Christophe Giacardi, Thibaut Baudic, Chloé Thill, Said Lebbah, Jessica Palmyre, Florence Tubach, David Hajage, Nicolas Bonnet, Nathan Ebstein, Stéphane Gaudry, Yves Cohen, Julie Noublanche, Olivier Lesieur, Arnaud Sément, Isabel Roca-Cerezo, Michel Pascal, Nesrine Sma, Gwenhaël Colin, Jean-Claude Lacherade, Gauthier Bionz, Natacha Maquigneau, Pierre Bouzat, Michel Durand, Marie-Christine Hérault, Jean-Francois Payen
Critical Care, 2023, 27 (1), pp.103. ⟨10.1186/s13054-023-04349-1⟩
Article dans une revueAbstractBackground: Limitations of life-sustaining therapies (LST) practices are frequent and vary among intensive care units (ICUs). However, scarce data were available during the COVID-19 pandemic when ICUs were under intense pressure. We aimed to investigate the prevalence, cumulative incidence, timing, modalities, and factors associated with LST decisions in critically ill COVID-19 patients. Methods: We did an ancillary analysis of the European multicentre COVID-ICU study, which collected data from 163 ICUs in France, Belgium and Switzerland. ICU load, a parameter reflecting stress on ICU capacities, was calculated at the patient level using daily ICU bed occupancy data from official country epidemiological reports. Mixed effects logistic regression was used to assess the association of variables with LST limitation decisions. Results: Among 4671 severe COVID-19 patients admitted from February 25 to May 4, 2020, the prevalence of in-ICU LST limitations was 14.5%, with a nearly six-fold variability between centres. Overall 28-day cumulative incidence of LST limitations was 12.4%, which occurred at a median of 8 days (3-21). Median ICU load at the patient level was 126%. Age, clinical frailty scale score, and respiratory severity were associated with LST limitations, while ICU load was not. In-ICU death occurred in 74% and 95% of patients, respectively, after LST withholding and withdrawal, while median survival time was 3 days (1-11) after LST limitations. Conclusions: In this study, LST limitations frequently preceded death, with a major impact on time of death. In contrast to ICU load, older age, frailty, and the severity of respiratory failure during the first 24 h were the main factors associated with decisions of LST limitations.
Systems prediction of chronic lung allograft dysfunction: Results and perspectives from the Cohort of Lung Transplantation and Systems prediction of Chronic Lung Allograft Dysfunction cohorts
Christophe Pison, Adrien Tissot, Eric Bernasconi, Pierre-Joseph Royer, Antoine Roux, Angela Koutsokera, Benjamin Coiffard, Benjamin Renaud-Picard, Jérôme Le Pavec, Pierre Mordant, Xavier Demant, Thomas Villeneuve, Jean-Francois Mornex, Simona Nemska, Nelly Frossard, Olivier Brugière, Valérie Siroux, Benjamin Marsland, Aurore Foureau, Karine Botturi, Eugénie Durand, Johann Pellet, Richard Danger, Charles Auffray, Sophie Brouard, Laurent Nicod, Antoine Magnan
Frontiers in Medicine, 2023, 10, pp.1126697. ⟨10.3389/fmed.2023.1126697⟩
Article dans une revueAbstractBackground : Chronic lung allograft dysfunction (CLAD) is the leading cause of poor long-term survival after lung transplantation (LT). Systems prediction of Chronic Lung Allograft Dysfunction (SysCLAD) aimed to predict CLAD. Methods : To predict CLAD, we investigated the clinicome of patients with LT; the exposome through assessment of airway microbiota in bronchoalveolar lavage cells and air pollution studies; the immunome with works on activation of dendritic cells, the role of T cells to promote the secretion of matrix metalloproteinase-9, and subpopulations of T and B cells; genome polymorphisms; blood transcriptome; plasma proteome studies and assessment of MSK1 expression. Results : Clinicome: the best multivariate logistic regression analysis model for early-onset CLAD in 422 LT eligible patients generated a ROC curve with an area under the curve of 0.77. Exposome: chronic exposure to air pollutants appears deleterious on lung function levels in LT recipients (LTRs), might be modified by macrolides, and increases mortality. Our findings established a link between the lung microbial ecosystem, human lung function, and clinical stability post-transplant. Immunome: a decreased expression of CLEC1A in human lung transplants is predictive of the development of chronic rejection and associated with a higher level of interleukin 17A; Immune cells support airway remodeling through the production of plasma MMP-9 levels, a potential predictive biomarker of CLAD. Blood CD9-expressing B cells appear to favor the maintenance of long-term stable graft function and are a potential new predictive biomarker of BOS-free survival. An early increase of blood CD4 + CD57 + ILT2+ T cells after LT may be associated with CLAD onset. Genome: Donor Club cell secretory protein G38A polymorphism is associated with a decreased risk of severe primary graft dysfunction after LT. Transcriptome: blood POU class 2 associating factor 1, T-cell leukemia/lymphoma domain, and B cell lymphocytes, were validated as predictive biomarkers of CLAD phenotypes more than 6 months before diagnosis. Proteome: blood A2MG is an independent predictor of CLAD, and MSK1 kinase overexpression is either a marker or a potential therapeutic target in CLAD. Conclusion : Systems prediction of Chronic Lung Allograft Dysfunction generated multiple fingerprints that enabled the development of predictors of CLAD. These results open the way to the integration of these fingerprints into a predictive handprint.
Cancer-associated Mutations in Congenital Pulmonary Malformations: A Prospective Cohort
Simon Garinet, Makan Rahshenas, Louise Galmiche-Rolland, Olivier Abbo, Arnaud Bonnard, Frédéric Hameury, Naziha Khen-Dunlop, Babak Khoshnood, Hélène Blons, Christophe Delacourt, Olivier Morel, Thierry Petit, François Becmeur
American Journal of Respiratory and Critical Care Medicine, 2023, 207 (5), pp.615-619. ⟨10.1164/rccm.202208-1573LE⟩
Article dans une revueScreening of glucose tolerance abnormalities and diabetes in people with cystic fibrosis: A French position
Laurence Weiss, Philippe Reix, Helen Mosnier-Pudar, Olivia Ronsin, Jacques Beltrand, Quitterie Reynaud, Laurent Mely, Pierre-Régis Burgel, Nathalie Stremler, Luc Rakotoarisoa, Alfonso Galderisi, Kevin Perge, Nathalie Bendelac, Michel Abely, Laurence Kessler
Médecine des Maladies Métaboliques, 2023, 17 (2), pp.169 - 188. ⟨10.1016/j.mmm.2023.01.001⟩
Article dans une revuePrognostic score and sex-specific nomograms to predict survival in resectable lung cancer: a French nationwide study from the Epithor cohort database
Marco Alifano, Elisa Daffré, Laurent Brouchet, Pierre Emmanuel Falcoz, Françoise Le Pimpec Barthes, Pierre Benoit Pages, Pascal Alexandre Thomas, Marcel Dahan, Raphaël Porcher
The Lancet Regional Health - Europe, 2023, 26, pp.1-14. ⟨10.1016/j.lanepe.2022.100566⟩
Article dans une revueAbstractBackground Prognostic assessment in patients undergoing cancer treatments is of paramount importance to plan subsequent management. In resectable lung cancer availability of an easy-to use nomogram to predict long-term outcome would be extremely useful to identify high-risk patients in the era of perioperative targeted and immune therapies. Methods We retrieved clinical, surgical and pathological data of all consecutive patients included in Epithor, the database of French Society of Thoracic and Cardiovascular Surgery, and operated on between 2003 and 2020 for non-small cell lung cancer in a curative intent. The primary endpoint was overall survival up to 5 years. We assessed prognostic significance of available variables using Cox modelling, in the whole dataset, and in men and in women separately, and performed temporal validation. Finally, we constructed two sex-specific nomograms. Survivals by fifths of score were assessed in the development and temporal validation sets. Findings The study included 62,633 patients (43,551 men and 19,082 women). Median survival time was 9.2 years. Nine factors had strong prognostic impact and were used to construct nomograms. The optimism-corrected c statistic for the prognostic score was 0.689 in the development sample, and 0.726 (95% CI 0.718–0.735) in the temporal validation sample. All differences between adjacent fifths of score were significant (P < 0.0001). Figures of 3-year OS by fifths of score were 92.2%, 83.0%, 74.3%, 64.0%, and 43.4%, respectively, in the development set and 93.3%, 88.4%, 81.0%, 73.7%, 55.7% in the temporal validation set. Performance of score was maintained when stratifying by stage of diseases. Interpretation In the present work, we report evidence that long-term overall survival after resection of NSCLC can be predicted by an easy to construct and use composite score taking into account both host and tumour related factors. Funding Epithor is funded by FSTCVS.
Reaching multidisciplinary consensus on the management of non-bulky/non-infiltrative stage IIIA N2 non-small cell lung cancer
Arnaud Scherpereel, Etienne Martin, Laurent Brouchet, Romain Corre, Michaël Duruisseaux, Pierre-Emmanuel Falcoz, Philippe Giraud, Cécile Le Péchoux, Marie Wislez, Marco Alifano
Lung Cancer, 2023, 177, pp.21-28. ⟨10.1016/j.lungcan.2023.01.008⟩
Article dans une revueA Real-World Cost-Effectiveness Study Evaluating Imaging Strategies for the Diagnostic Workup of Renal Colic in the Emergency Department
Sabrina Kepka, Kevin Zarca, Mickaël Ohana, Anne Hoffmann, Joris Muller, Pierrick Le Borgne, Emmanuel Andrès, Pascal Bilbault, Isabelle Durand Zaleski
Medicina, 2023, 59 (3), pp.475. ⟨10.3390/medicina59030475⟩
Article dans une revueAbstractIntroduction: Both non-contrast Computed Tomography (CT) and ultrasound (US) are used for the diagnosis of renal colic in the emergency department (ED). Although US reduces radiation exposure, its diagnostic accuracy is inferior to that of CT. In this context, data regarding the cost and organizational impact of these strategies represent essential elements in the choice of imaging; however, they remain poorly documented. Aim of the study The aim of this study was to compare the costs and effectiveness of diagnostic workup by US and CT for patients consulting with renal colic in the ED. Methods: We conducted a monocentric real-life retrospective study of patients consulting for a renal colic in an ED between 1 July 2018 and 31 December 2018. We estimated length of stay (LOS), total hospital costs at 60 days including ED, and initial and repeat admissions. Patients with initial US in the ED were compared to patients with initial CT using inverse probability weighting of the propensity score calculated from demographic variables, vital parameters, and clinical presentation. We calculated the incremental cost effectiveness ratio as the difference in costs by the difference in LOS. The variability of the results was assessed using non-parametric bootstrapping. Results: In this study, of the 273 patients included, 67 were patients assessed with US and 206 with CT. The average costs were €1159 (SD 1987) and €956 (SD 1462) for US and CT, respectively, and the ED LOS was 8.9 [CI 95% 8.1; 9.4] and 8.7 [CI 95% 7.9; 9.9] hours for US and CT, respectively. CT was associated with a decreased LOS by 0.139 [CI 95% -1.1; 1.5] hours and was cost-saving, with a €199 [CI 95% -745; 285] reduction per patient. Conclusion: When imaging is required in the ED for suspected renal colic as recommended, there is real-life evidence that CT is a cost-effective strategy compared to US, reducing costs and LOS in the ED.
Impact of formulation design and lyophilisation on the physicochemical characteristics of finasteride nanosystems
Malik Muhammad Irfan, Shefaat Ullah Shah, Kifayat Ullah Shah, Nicolas Anton, Ysia Idoux-Gillet, Guillaume Conzatti, Kifayat Ullah Shah, Elise Perennes, Thierry Vandamme
Journal of Microencapsulation, 2023, 40 (2), pp.106-123. ⟨10.1080/02652048.2023.2178537⟩
Article dans une revueAbstractThe fundamental purpose of this study was to develop a stable lyophilised finasteride nanosystem (FNS-NS) for topical delivery. The FNS-NS was fabricated using an ultrasonication technique. The impact of two different cryoprotectants on the physicochemical characteristics of FNS-NS before and after lyophilisation was thoroughly investigated. The lyophilised FNS-NS had spherical shape with particle size lied between 188.6 nm ± 4.4 and 298.7 nm ± 4.7, low PDI values (0.26 ± 0.02 to 0.32 ± 0.02) and zeta potential ranging from −38.3 to +53.3 mV. The confocal laser microscopy depicted a comparatively higher cellular internalisation achieved for undecorated FNS-NS with respect to its chitosan-decorated counterpart. The lyophilised FNS-NS was stable for 90 days at proper storage conditions. The FNS-NS with 15% trehalose had appropriate physicochemical attributes that could be a promising carrier for topical delivery to treat androgenic alopecia.
Intraoral optical impression versus conventional impression for full edentulous maxilla: an in vivo comparative study.
Claire Willmann, Adrien Deschamps, Corinne Taddei-Gross, Anne-Marie Musset, Cecilia Lai, Olivier Etienne
International Journal of Computerized Dentistry, 2023, ⟨10.3290/j.ijcd.b3916775⟩
Article dans une revueAbstractAim: The aim of this in vivo study was to compare the clinical trueness of primary mucostatic impressions obtained either by a classical alginate technique or by an optical intraoral scanner of fully maxilla edentulous patients. Materials and methods: 30 patients with fully edentulous maxilla were included and underwent conventional impressions as well as intraoral optical impressions (TRIOS 3®, 3Shape®). The conventional impressions were casted and the resulting stone models were digitized using a desktop scanner (Iscan D104i®, Imetric®). These digitized impressions were superimposed over the optical impressions to compare differences between the two datasets. Statistical analyses were performed to identify relevant deviations. Result: For the 30 intraoral impressions, 80.88% of the surface areas were below the tolerance threshold of 25 μm and thus considered similar to the area scanned with the desktop scanner from the reference stone model. Interestingly, the differences (19.12% of the surfaces) were localized in depressible areas like vestibule, soft palate, incisal papilla and flabby ridge. These locations were coherent with the positive mean of differences of +22.8μm, indicating deformation or less compression using the intraoral scanner. Conclusion: Digital primary impression of the fully edentulous maxilla can be considered as similar to the conventional alginate impression, except in the depressible areas. Considering the mucostatic objective of such a primary impression, one may consider optical impression as more accurate than the conventional one. Keywords: clinical trial; conventional impression; digital impression; edentulous patients; intraoral scanner; maxilla.
Fluid balance control in critically ill patients: results from POINCARE-2 stepped wedge cluster-randomized trial
Pierre-Edouard Bollaert, Alexandra Monnier, Francis Schneider, Laurent Argaud, Julio Badie, Claire Charpentier, Ferhat Meziani, Michel Bemer, Jean-Pierre Quenot, Marie Buzzi, Hervé Outin, Cédric Bruel, Laurent Ziegler, Sébastien Gibot, Jean-Marc Virion, Camille Alleyrat, Guillaume Louis, Nelly Agrinier
Critical Care, 2023, 27 (1), pp.66. ⟨10.1186/s13054-023-04357-1⟩
Article dans une revueAbstractBackground: In critically ill patients, positive fluid balance is associated with excessive mortality. The POINCARE-2 trial aimed to assess the effectiveness of a fluid balance control strategy on mortality in critically ill patients. Methods: POINCARE-2 was a stepped wedge cluster open-label randomized controlled trial. We recruited critically ill patients in twelve volunteering intensive care units from nine French hospitals. Eligible patients were ≥ 18 years old, under mechanical ventilation, admitted to one of the 12 recruiting units for > 48 and ≤ 72 h, and had an expected length of stay after inclusion > 24 h. Recruitment started on May 2016 and ended on May 2019. Of 10,272 patients screened, 1361 met the inclusion criteria and 1353 completed follow-up. The POINCARE-2 strategy consisted of a daily weight-driven restriction of fluid intake, diuretics administration, and ultrafiltration in case of renal replacement therapy between Day 2 and Day 14 after admission. The primary outcome was 60-day all-cause mortality. We considered intention-to-treat analyses in cluster-randomized analyses (CRA) and in randomized before-and-after analyses (RBAA). Results: A total of 433 (643) patients in the strategy group and 472 (718) in the control group were included in the CRA (RBAA). In the CRA, mean (SD) age was 63.7 (14.1) versus 65.7 (14.3) years, and mean (SD) weight at admission was 78.5 (20.0) versus 79.4 (23.5) kg. A total of 129 (160) patients died in the strategy (control) group. Sixty-day mortality did not differ between groups [30.5%, 95% confidence interval (CI) 26.2-34.8 vs. 33.9%, 95% CI 29.6-38.2, p = 0.26]. Among safety outcomes, only hypernatremia was more frequent in the strategy group (5.3% vs. 2.3%, p = 0.01). The RBAA led to similar results. Conclusion: The POINCARE-2 conservative strategy did not reduce mortality in critically ill patients. However, due to open-label and stepped wedge design, intention-to-treat analyses might not reflect actual exposure to this strategy, and further analyses might be required before completely discarding it. Trial registration POINCARE-2 trial was registered at ClinicalTrials.gov (NCT02765009). Registered 29 April 2016.
ChatGPT: the next frontier in academic writing for cardiologists or a pandora’s box of ethical dilemmas
Benjamin Marchandot, Kensuke Matsushita, Adrien Carmona, Antonin Trimaille, Olivier Morel
European Heart Journal Open, 2023, 3 (2), pp.oead007. ⟨10.1093/ehjopen/oead007⟩
Article dans une revueAbstractNo abstract available
Early-Onset, Conjugal, Twin-Discordant, and Clusters of Sporadic ALS: Pathway to Discovery of Etiology via Lifetime Exposome Research
Peter S Spencer, Valerie S Palmer, Glen E Kisby, Emmeline Lagrange, B. Zane Horowitz, Raquel Valdes Angues, Jacques Reis, Jean-Paul Vernoux, Cédric Raoul, William Camu
Frontiers in Neuroscience, 2023, 17, pp.1005096. ⟨10.3389/fnins.2023.1005096⟩
Article dans une revueAbstractThe identity and role of environmental factors in the etiology of sporadic amyotrophic lateral sclerosis (sALS) is poorly understood outside of three former high-incidence foci of Western Pacific ALS and a hotspot of sALS in the French Alps. In both instances, there is a strong association with exposure to DNA-damaging (genotoxic) chemicals years or decades prior to clinical onset of motor neuron disease. In light of this recent understanding, we discuss published geographic clusters of ALS, conjugal cases, single-affected twins, and young-onset cases in relation to their demographic, geographic and environmental associations but also whether, in theory, there was the possibility of exposure to genotoxic chemicals of natural or synthetic origin. Special opportunities to test for such exposures in sALS exist in southeast France, northwest Italy, Finland, the U.S. East North Central States, and in the U.S. Air Force and Space Force. Given the degree and timing of exposure to an environmental trigger of ALS may be related to the age at which the disease is expressed, research should focus on the lifetime exposome (from conception to clinical onset) of young sALS cases. Multidisciplinary research of this type may lead to the identification of ALS causation, mechanism, and primary prevention, as well as to early detection of impending ALS and pre-clinical treatment to slow development of this fatal neurological disease.
The association between respiratory diseases and periodontitis: A systematic review and meta‐analysis
Ana Molina, Olivier Huck, David Herrera, Eduardo Montero
Journal of Clinical Periodontology, 2023, 50, pp.842 - 887. ⟨10.1111/jcpe.13767⟩
Article dans une revueAbstractAim: To evaluate (1) whether periodontitis has an influence on the prevalence/ incidence of respiratory diseases (chronic obstructive pulmonary disease [COPD], asthma, community-acquired pneumonia [CAP], obstructive sleep apnoea [OSA] and COVID-19), and ( 2) what is the impact of periodontal therapy on the onset or progression of respiratory diseases.<p>Materials and Methods: An electronic search was performed on Pubmed, Cochrane Library and Scopus databases up to October 2021, to identify studies answering the PECOS and PICOS questions.</p><p>Results: Seventy-five articles were selected. Meta-analyses identified statistically significant associations of periodontitis with COPD (n studies = 12, odds ratio [OR] = 1.28, 95% confidence interval [CI] [1.16; 1.42], p < .001), and OSA (n s = 6, OR = 1.65, 95% CI [1.21; 2.25], p = .001), but not for asthma (n s = 9, OR = 1.53, 95% CI [0.82; 2.86], p = .181). For acute conditions, two studies were found for CAP, while for COVID-19, significant associations were found for the need of assisted ventilation (n s = 2, OR = 6.24, 95% CI [2.78; 13.99], p < .001) and COVID-related mortality (n s = 3, OR = 2.26, 95% CI [1.36, 3.77], p = .002). Only four intervention studies were found, showing positive effects of periodontal treatment on COPD, asthma and CAP.</p><p>Conclusions: A positive association between periodontitis and COPD, OSA and COVID-19 complications has been found, while there is a lack of intervention studies.</p>
Impact of corticosteroids on the procoagulant profile of critically ill COVID-19 patients: a before-after study
Paul Gabarre, Tomas Urbina, Sibylle Cunat, Hamid Merdji, Vincent Bonny, Jean-Rémi Lavillegrand, Lisa Raia, Naïke Bige, Jean-Luc Baudel, Eric Maury, Bertrand Guidet, Julie Helms, Hafid Ait-Oufella
Minerva Anestesiologica, 2023, 89 (1-2), pp.405. ⟨10.23736/s0375-9393.22.16640-x⟩
Article dans une revueAbstractBACKGROUND: Several studies have reported an increased risk of thrombotic events in COVID-19 patients, but the pathophysiology of this procoagulant phenotype remains poorly understood. We hypothesized that corticosteroids may attenuate this procoagulant state through their anti-inflammatory effects. The aim of this study was to evaluate the impact of dexamethasone (DXM) on the coagulation profile of severely ill COVID-19 patients. METHODS: We conducted a retrospective, observational before/after bi-centric cohort study among ICU patients hospitalized for severe COVID-19 and receiving therapeutic anticoagulation by unfractionated heparin (UFH). Before and after the standardized use of DXM, we compared inflammatory and coagulation profiles, as well as the kinetics of heparin requirement, adjusted for weight and anti-Xa activity. RESULTS: Eighty-six patients were included, 35 in the no-DXM group, and 51 in the DXM group. At admission, CRP and fibrinogen levels were not different between groups, neither were UFH infusion rates. At day 3 after ICU admission, CRP (178±94 mg/L vs. 99±68 mg/L, P<0.001) and fibrinogen (7.2±1.4 g/L vs. 6.1±1.4 g/L, P=0.001) significantly decreased in the DXM group, but not in the no-DXM group. Over time, UFH infusion rates were lower in the DXM group (P<0.001) without any significant difference in plasma anti-Xa activity. CRP variations correlated with heparin dose variations between Day 0 and Day 3 (r=0.39, P=0.009). Finally, the incidence of venous thromboembolic events during in-ICU stay was significantly reduced in the DXM group (4 vs. 43%, P<0.0001). CONCLUSIONS: In critically ill COVID-19 patients, dexamethasone use was associated with a decrease in both pro-inflammatory and procoagulant profile.
Grafted dinuclear zinc complexes for selective recognition of phosphatidylserine: Application to the capture of extracellular membrane microvesicles
Angéline van der Heyden, Phoulinh Chanthavong, Eduardo Angles-Cano, Hugues Bonnet, Jerôme Dejeu, Audrey Cras, Christian Philouze, Guy Serratrice, Fatiha Zoubari El-Ghazouani, Florence Toti, Aurore Thibon-Pourret, Catherine Belle
Journal of Inorganic Biochemistry, 2023, 239, pp.112065. ⟨10.1016/j.jinorgbio.2022.112065⟩
Article dans une revueAbstractMicrovesicles (MVs) are key markers in human body fluids that reflect cellular activation related to diseases as thrombosis. These MVs display phosphatidylserine at the outer leaflet of their plasma membrane as specific recognition moieties. The work reported in this manuscript focuses on the development of an original method where MVs are captured by bimetallic zinc complexes. A set of ligands have been synthetized based on a phenol spacer bearing in para position an amine group appended to a short or a longer alkyl chain (for grafting on surface) and bis(dipicolylamine) arms in ortho position (for zinc coordination). The corresponding dibridged zinc phenoxido and hydroxido complexes have been prepared in acetronitrile in presence of triethylamine and characterized by several spectroscopic techniques. The pH-driven interconversion studies for both complexes in H2O:DMSO (70:30) evidence that at physiologic pH the main species are mono-bridged by the phenoxido spacer. An X-Ray structure obtained from complex 2 (based on the ligand with the amine group on the short chain) in aqueous medium confirms the presence of a mono-bridged complex. Then, the complexes have been used for interaction studies with short-chain phospholipids. Both have established the selective recognition of the anionic phosphatidylserine model versus zwitterionic phospholipids (in solution by 31P NMR and after immobilization on solid support by surface plasmon resonance (SPR)). Moreover, both complexes have also demonstrated their ability to capture MVs isolated from human plasma. These complexes are thus promising candidates for MVs probing by a new approach based on coordination chemistry.
Anticoagulation in adult patients supported with extracorporeal membrane oxygenation: guidance from the Scientific and Standardization Committees on Perioperative and Critical Care Haemostasis and Thrombosis of the International Society on Thrombosis and Haemostasis
Julie Helms, Corinne Frere, Thomas Thiele, Kenichi Tanaka, Matthew Neal, Marie Steiner, Jean Connors, Jerrold Levy
Journal of Thrombosis and Haemostasis, 2023, 21 (2), pp.373-396. ⟨10.1016/j.jtha.2022.11.014⟩
Article dans une revueEditorial: HF2Cancer: Exploring bidirectional interaction between cardiovascular diseases and cancer
Canan G Nebigil, Michael W Y Chan
Frontiers in Cardiovascular Medicine, 2023, 10, pp.1145780. ⟨10.3389/fcvm.2023.1145780⟩
Article dans une revueAbstractNo abstract available
Complete Response in Metastatic Clear Cell Renal Cell Carcinoma Patients Treated with Immune-Checkpoint Inhibitors: Remission or Healing? How to Improve Patients’ Outcomes?
Jonathan Thouvenin, Claire Masson, Philippe Boudier, Denis Maillet, Sabine Kuchler-Bopp, Philippe Barthélémy, Thierry Massfelder
Cancers, 2023, 15 (3), pp.793. ⟨10.3390/cancers15030793⟩
Article dans une revueAbstractRenal-cell carcinoma (RCC) accounts for 2% of cancer diagnoses and deaths worldwide. Clear-cell RCCs represent the vast majority (85%) of kidney cancers and are considered morphologically and genetically as immunogenic tumors. Indeed, the RCC tumoral microenvironment comprises T cells and myeloid cells in an immunosuppressive state, providing an opportunity to restore their activity through immunotherapy. Standard first-line systemic treatment for metastatic patients includes immune-checkpoint inhibitors (ICIs) targeting PD1, in combination with either another ICI or with antiangiogenic targeted therapy. During the past few years, several combinations have been approved with an overall survival benefit and overall response rate that depend on the combination. Interestingly, some patients achieve prolonged complete responses, raising the question of whether these metastatic RCC patients can be cured. This review will focus on recent therapeutic advances in RCC and the clinical and biological aspects underpinning the potential for healing.
Efficacy of three COVID-19 vaccine doses in lung transplant recipients: a multicentre cohort study
Gaëlle Dauriat, Laurence Beaumont, Liem Binh Luong Nguyen, Benjamin Renaud Picard, Morgane Penhouet, Benjamin Coiffard, Mathilde Salpin, Xavier Demant, Christel Saint Raymond, Nicolas Carlier, Jonathan Messika, Martine Reynaud Gaubert, Isabelle Danner, Floriane Gallais, Antoine Roux, Jérôme Le Pavec
European Respiratory Journal, 2023, 61 (1), pp.2200502. ⟨10.1183/13993003.00502-2022⟩
Article dans une revueAbstractQuestion addressed by the study: Do three coronavirus disease 2019 (COVID-19) vaccine doses induce a serological response in lung transplant recipients? Methods: We retrospectively included 1071 adults (551 (52%) males) at nine transplant centres in France. Each had received three COVID-19 vaccine doses in 2021, after lung transplantation. An anti-spike protein IgG response, defined as a titre >264 BAU·mL −1 after the third dose (median (interquartile range (IQR)) 3.0 (1.7–4.1) months), was the primary outcome and adverse events were the secondary outcomes. Median (IQR) age at the first vaccine dose was 54 (40–63) years and median (IQR) time from transplantation to the first dose was 64 (30–110) months. Results: Median (IQR) follow-up after the first dose was 8.3 (6.7–9.3) months. A vaccine response developed in 173 (16%) patients. Factors independently associated with a response were younger age at vaccination, longer time from transplantation to vaccination and absence of corticosteroid or mycophenolate therapy. After vaccination, 51 (5%) patients (47 non-responders (47/898 (5%)) and four (4/173 (2%)) responders) experienced COVID-19, at a median (IQR) of 6.6 (5.1–7.3) months after the third dose. No responders had severe COVID-19 compared with 15 non-responders, including six who died of the disease. Conclusions Few lung transplant recipients achieved a serological response to three COVID-19 vaccine doses, indicating a need for other protective measures. Older age and use of mycophenolate or corticosteroids were associated with absence of a response. The low incidence of COVID-19 might reflect vaccine protection via cellular immunity and/or good adherence to shielding measures.
A Real-World Cost-Effectiveness Analysis of Rivaroxaban versus Vitamin K Antagonists for the Treatment of Symptomatic Venous Thromboembolism: Lessons from the REMOTEV Registry
Sabrina Kepka, Elena-Mihaela Cordeanu, Kevin Zarca, Anne-Sophie Frantz, Patrick Ohlmann, Emmanuel Andres, Pascal Bilbault, Isabelle Durand-Zaleski, Dominique Stephan
Medicina, 2023, 59 (1), pp.181. ⟨10.3390/medicina59010181⟩
Article dans une revueAbstractBackground and objectives: Venous thromboembolism (VTE) represents a health and economic burden with consequent healthcare resource utilization. Direct oral anticoagulants (DOACs) have emerged as the mainstay option for VTE treatment but few data exist on their cost-effectiveness as compared to the standard therapy (vitamin K antagonists (VKAs)). This study aimed to assess the cost-effectiveness of rivaroxaban compared to VKAs in VTE treatment by calculating the incremental cost effectiveness ratio (ICER). Materials and methods: We conducted a prospective observational study based on the REMOTEV registry, including patients hospitalized for VTE from 23 October 2013 to 31 July 2015, to evaluate the impact of the anticoagulant treatment (DOACs versus VKAs) on 6-month complications: major or clinically relevant non-major bleeding, VTE recurrence and all-cause death. Rivaroxaban was the only DOAC prescribed in this study. The ICER was calculated as the difference in costs divided by the difference in effectiveness. Results: Among the 373 patients included, 279 were treated with rivaroxaban (63.1 ± 17.9 years old; 49% men) and 94 with VKAs (71.3 ± 16.6 years old; 46% men). The mean cost was EUR 5662 [95% CI 6606; 9060] for rivaroxaban and EUR 7721 [95% CI 5130; 6304] for VKAs, while effectiveness was 0.0586 95% CI [0.0114; 0.126] for DOACs and 0.0638 [95% CI 0.0208; 0.109] for VKAs. The rivaroxaban treatment strategy was dominant with costs per patient EUR 2059 lower [95% CI −3582; −817] and a higher effectiveness of 0.00527 [95% CI −0.0606; 0.0761] compared to VKAs. Conclusions: This study provides real-world evidence that rivaroxaban is not only an efficient and safe alternative to VKAs for eligible VTE patients, but also cost-saving.
Triazine-Based Small Molecules: A Potential New Class of Compounds in the Antifungal Toolbox
Karen A. Conrad, Hyunjeong Kim, Mohammad Qasim, Amel Djehal, Aaron D. Hernday, Laurent Désaubry, Jason M. Rauceo
Pathogens, 2023, 12 (1), pp.126. ⟨10.3390/pathogens12010126⟩
Article dans une revueAbstractInvasive fungal infections caused by Candida species remain a significant public health problem worldwide. The increasing prevalence of drug-resistant infections and a limited arsenal of antifungal drugs underscore the need for novel interventions. Here, we screened several classes of pharmacologically active compounds against mammalian diseases for antifungal activity. We found that the synthetic triazine-based compound melanogenin (Mel) 56 is fungicidal in Candida albicans laboratory and clinical strains with minimal inhibitory concentrations of 8-16 µg/mL. Furthermore, Mel56 has general antifungal activity in several non-albicans&nbsp;Candida species and the non-pathogenic yeast Saccharomyces cerevisiae. Surprisingly, Mel56 inhibited the yeast-to-hyphae transition at sublethal concentrations, revealing a new role for triazine-based compounds in fungi. In human cancer cell lines, Mel56 targets the inner mitochondrial integral membrane prohibitin proteins, PHB1 and PHB2. However, Mel56 treatment did not impact C. albicans mitochondrial activity, and antifungal activity was similar in prohibitin single, double, and triple homozygous mutant strains compared to the wild-type parental strain. These results suggests that Mel56 has a novel mechanism-of-action in C. albicans. Therefore, Mel56 is a promising antifungal candidate warranting further analyses.
Temporal trends in mortality and provision of intensive care in younger women and men with acute myocardial infarction or stroke
Ketina Arslani, Janna Tontsch, Atanas Todorov, Bianca Gysi, Mark Kaufmann, Fabian Kaufmann, Alexa Hollinger, Karin Wildi, Hamid Merdji, Julie Helms, Martin Siegemund, Catherine Gebhard, Caroline E Gebhard
Critical Care, 2023, 27 (1), pp.14. ⟨10.1186/s13054-022-04299-0⟩
Article dans une revueAbstractBackground: Timely management of acute myocardial infarction (AMI) and acute stroke has undergone impressive progress during the last decade. However, it is currently unknown whether both sexes have profited equally from improved strategies. We sought to analyze sex-specific temporal trends in intensive care unit (ICU) admission and mortality in younger patients presenting with AMI or stroke in Switzerland. Methods: Retrospective analysis of temporal trends in 16,954 younger patients aged 18 to ≤ 52 years with AMI or acute stroke admitted to Swiss ICUs between 01/2008 and 12/2019. Results: Over a period of 12 years, ICU admissions for AMI decreased more in women than in men (− 6.4% in women versus − 4.5% in men, p < 0.001), while ICU mortality for AMI significantly increased in women (OR 1.2 [1.10–1.30], p = 0.032), but remained unchanged in men (OR 0.99 [0.94–1.03], p = 0.71). In stroke patients, ICU admission rates increased between 3.6 and 4.1% per year in both sexes, while ICU mortality tended to decrease only in women (OR 0.91 [0.85–0.95, p = 0.057], but remained essentially unaltered in men (OR 0.99 [0.94–1.03], p = 0.75). Interventions aimed at restoring tissue perfusion were more often performed in men with AMI, while no sex difference was noted in neurovascular interventions. Conclusion: Sex and gender disparities in disease management and outcomes persist in the era of modern interventional neurology and cardiology with opposite trends observed in younger stroke and AMI patients admitted to intensive care. Although our study has several limitations, our data suggest that management and selection criteria for ICU admission, particularly in younger women with AMI, should be carefully reassessed.
Safety, Immunogenicity, and 1-Year Efficacy of Universal Cancer Peptide–Based Vaccine in Patients With Refractory Advanced Non–Small-Cell Lung Cancer: A Phase Ib/Phase IIa De-Escalation Study
Olivier Adotévi, Dewi Vernerey, Pascale Jacoulet, Aurélia Meurisse, Caroline Laheurte, Hamadi Almotlak, Marion Jacquin, Vincent Kaulek, Laura Boullerot, Marine Malfroy, Emeline Orillard, Guillaume Eberst, Aurélie Lagrange, Laure Favier, Marie Gainet-Brun, Ludovic Doucet, Luis Teixeira, Zineb Ghrieb, Anne-Laure Clairet, Yves Guillaume, Marie Kroemer, Didier Hocquet, Mélanie Moltenis, Samuel Limat, Elisabeth Quoix, Céline Mascaux, Didier Debieuvre, Christine Fagnoni-Legat, Christophe Borg, Virginie Westeel
Journal of Clinical Oncology, 2023, 41 (2), pp.373-384. ⟨10.1200/JCO.22.00096⟩
Article dans une revueAbstractPURPOSE Universal cancer peptide–based vaccine (UCPVax) is a therapeutic vaccine composed of two highly selected helper peptides to induce CD4+ T helper-1 response directed against telomerase. This phase Ib/IIa trial was designed to test the safety, immunogenicity, and efficacy of a three-dose schedule in patients with metastatic non–small-cell lung cancer (NSCLC). PATIENTS AND METHODS Patients with refractory NSCLC were assigned to receive three vaccination doses of UCPVax (0.25 mg, 0.5 mg, and 1 mg) using a Bayesian-based phase Ib followed by phase IIa de-escalating design. The primary end points were dose-limiting toxicity and immune response after three first doses of vaccine. Secondary end points were overall survival (OS) and progression-free survival at 1 year. RESULTS A total of 59 patients received UCPVax; 95% had three prior lines of systemic therapy. No dose-limiting toxicity was observed in 15 patients treated in phase Ib. The maximum tolerated dose was 1 mg. Fifty-one patients were eligible for phase IIa. The third and sixth dose of UCPVax induced specific CD4+ T helper 1 response in 56% and 87.2% of patients, respectively, with no difference between three dose levels. Twenty-one (39%) patients achieved disease control (stable disease, n = 20; complete response, n = 1). The 1-year OS was 34.1% (95% CI, 23.1 to 50.4), and the median OS was 9.7 months, with no significant difference between dose levels. The 1-year progression-free survival and the median OS were 17.2% (95% CI, 7.8 to 38.3) and 11.6 months (95% CI, 9.7 to 16.7) in immune responders ( P = .015) and 4.5% (95% CI, 0.7 to 30.8) and 5.6 months (95% CI, 2.5 to 10) in nonresponders ( P = .005), respectively. CONCLUSION UCPVax was highly immunogenic and safe and provide interesting 1-year OS rate in heavily pretreated advanced NSCLC.
Inflammation, coagulation, and cellular injury in heat-induced shock
Toshiaki Iba, Julie Helms, Marcel Levi, Jerrold Levy
Inflammation Research, 2023, 72 (3), pp.463-473. ⟨10.1007/s00011-022-01687-8⟩
Article dans une revueAbstractBackground: The number of heatstroke victims hit record numbers in 2022 as global warming continues. In heat-induced injuries, circulatory shock is the most severe and deadly complication. This review aims to examine the mechanisms and potential approaches to heat-induced shock and the life-threatening complications of heatstroke. Methods: A computer-based online search was performed using the PubMed database and Web of Science database for published articles concerning heatstroke, shock, inflammation, coagulopathy, endothelial cell, cell death, and heat shock proteins. Results: Dehydration and heat-induced cardiomyopathy were reported as the major causes of heat-induced shock, although other heat-induced injuries are also involved in the pathogenesis of circulatory shock. In addition to dehydration, the blood volume decreases considerably due to the increased vascular permeability as a consequence of endothelial damage. Systemic inflammation is induced by factors that include elevated cytokine and chemokine levels, dysregulated coagulation/fibrinolytic responses, and the release of damage-associated molecular patterns (DAMPs) from necrotic cell death that cause distributive shock. The cytoprotective heat shock proteins can also facilitate circulatory disturbance under excess heat stress. Conclusions: Multiple mechanisms are involved in the pathogenesis of heat-induced shock. In addition to dehydration, heat stress-induced cardiomyopathy due to the thermal damage of mitochondria, upregulated inflammation via damage-associated molecular patterns released from oncotic cells, unbalanced coagulation/fibrinolysis, and endothelial damage are the major factors that are related to circulatory shock.
Primary failure of eruption: From molecular diagnosis to therapeutic management
Delphine Wagner, Tristan Rey, Marie Cecile Maniere, Sarah Dubourg, Agnès Bloch-Zupan, Marion Strub
Journal of Oral Biology and Craniofacial Research, 2023, 13 (2), pp.169-176. ⟨10.1016/j.jobcr.2023.01.001⟩
Article dans une revueAbstractIntroduction: Primary Failure of Eruption (PFE) is a rare condition affecting posterior teeth eruption resulting in a posterior open bite malocclusion. Differential diagnosis like ankylosis or mechanical eruption failure should be considered. For non-syndromic forms, mutations in PTH1R, and recently in KMT2C genes are the known etiologies. The aim of this work was to describe the variability of clinical presentations of PFE associated with pathogenic variants of PTHR1. Material and methods: Diagnosis of non-syndromic PFE has been suggested for three members of a single family. Clinical and radiological features were collected, and genetic analyses were performed. Results: The clinical phenotype (type and number of involved teeth, depth of bone inclusions, functional consequences) is variable within the family. Severe tooth resorptions were detected. A heterozygous substitution in PTH1R (NM_000316.3): c.899T > C was identified as a class 4 likely pathogenic variant. The multidisciplinary management is described involving oral biology, pediatric dentistry, orthodontics, oral surgery, and prosthodontics. Conclusion: In this study, we report a new PTH1R variant involved in a familial form of PFE with variable expressivity. Therapeutic care is complex and difficult to systematize, hence the lack of evidence-based recommendations and clinical guidelines.
Study of surfactant cross-linking by click chemistry on a model water/oil interface
Amani Germain Brou, Gildas Komenan Gbassi, Ievgen Shulov, Aidar Seralin, Andrey Klymchenko, Thierry Vandamme, Nicolas Anton
Physical Chemistry Chemical Physics, 2023, 25 (2), pp.1177-1186. ⟨10.1039/D2CP02146C⟩
Article dans une revueStandards of care for CFTR variant-specific therapy (including modulators) for people with cystic fibrosis
Kevin Southern, Carlo Castellani, Elise Lammertyn, Alan Smyth, Donald Vandevanter, Silke van Koningsbruggen-Rietschel, Jürg Barben, Amanda Bevan, Edwin Brokaar, Sarah Collins, Gary Connett, Thomas W.V. Daniels, Jane Davies, Dimitri Declercq, Silvia Gartner, Andrea Gramegna, Naomi Hamilton, Jenny Hauser, Nataliya Kashirskaya, Laurence Kessler, Jacqueline Lowdon, Halyna Makukh, Clémence Martin, Lisa Morrison, Dilip Nazareth, Jacquelien Noordhoek, Ciaran O'Neill, Elizabeth Owen, Helen Oxley, Karen Raraigh, Caroline Raynal, Karen Robinson, Jobst Roehmel, Carsten Schwarz, Isabelle Sermet, Michal Shteinberg, Ian Sinha, Constance Takawira, Peter van Mourik, Marieke Verkleij, Michael Waller, Alistair Duff
Journal of Cystic Fibrosis, 2023, 22 (1), pp.17-30. ⟨10.1016/j.jcf.2022.10.002⟩
Article dans une revue18F-FDG primary tumor uptake to improve N status prediction in cT1 non-metastatic non-small cell lung cancer: development and validation of a positron emission tomography model
David Morland, Marco Chiappetta, Pierre-Emmanuel Falcoz, Marie-Pierre Chenard, Salvatore Annunziata, Luca Boldrini, Filippo Lococo, Alessio Imperiale
Frontiers in Medicine, 2023, 10, pp.1141636. ⟨10.3389/fmed.2023.1141636⟩
Article dans une revueAbstractPurpose:: Occult lymph node involvement is a major issue in the management of non-small cell lung carcinoma (NSCLC), with an estimated prevalence of approximately 2.9–21.6% in 18F-FDG PET/CT series. The aim of the study is to construct a PET model to improve lymph node assessment. Methods:: Patients with a non-metastatic cT1 NSCLC were retrospectively included from two centers, one used to constitute the training set, the other for the validation set. The best multivariate model based on Akaike’s information criterion was selected, considering age, sex, visual assessment of lymph node (cN0 status), lymph node SUVmax, primary tumor location, tumor size, and tumoral SUVmax (T_SUVmax). A threshold minimizing false pN0 prediction was chosen. This model was then applied to the validation set. Results:: In total, 162 patients were included (training set: 44, validation set: 118). A model combining cN0 status and T_SUVmax was selected (AUC 0.907, specificity at threshold: 88.2%). In the validation cohort, this model resulted in an AUC of 0.832 and a specificity of 92.3% versus 65.4% for visual interpretation alone (p = 0.02). A total of two false N0 predictions were noted (1 pN1 and 1 pN2). Conclusion:: Primary tumor SUVmax improves N status prediction and could allow a better selection of patients who are candidates for minimally invasive approaches.
Norepinephrine and Vasopressin in Hemorrhagic Shock: A Focus on Renal Hemodynamics
Nicolas Fage, Pierre Asfar, Peter Radermacher, Julien Demiselle
International Journal of Molecular Sciences, 2023, 24 (4), pp.4103. ⟨10.3390/ijms24044103⟩
Article dans une revueAbstractDuring hemorrhagic shock, blood loss causes a fall in blood pressure, decreases cardiac output, and, consequently, O2 transport. The current guidelines recommend the administration of vasopressors in addition to fluids to maintain arterial pressure when life-threatening hypotension occurs in order to prevent the risk of organ failure, especially acute kidney injury. However, different vasopressors exert variable effects on the kidney, depending on the nature and dose of the substance chosen as follows: Norepinephrine increases mean arterial pressure both via its α-1-mediated vasoconstriction leading to increased systemic vascular resistance and its β1-related increase in cardiac output. Vasopressin, through activation of V1-a receptors, induces vasoconstriction, thus increasing mean arterial pressure. In addition, these vasopressors have the following different effects on renal hemodynamics: Norepinephrine constricts both the afferent and efferent arterioles, whereas vasopressin exerts its vasoconstrictor properties mainly on the efferent arteriole. Therefore, this narrative review discusses the current knowledge of the renal hemodynamic effects of norepinephrine and vasopressin during hemorrhagic shock.
Tetrodotoxin Decreases the Contractility of Mesenteric Arteries, Revealing the Contribution of Voltage-Gated Na+ Channels in Vascular Tone Regulation
Joohee Park, Coralyne Proux, William Ehanno, Léa Réthoré, Emilie Vessières, Jennifer Bourreau, Julie Favre, Gilles Kauffenstein, César Mattei, Hélène Tricoire-Leignel, Daniel Henrion, Claire Legendre, Christian Legros
Marine drugs, 2023, 21 (3), pp.196. ⟨10.3390/md21030196⟩
Article dans une revueAbstractTetrodotoxin (TTX) poisoning through the consumption of contaminated fish leads to lethal symptoms, including severe hypotension. This TTX-induced hypotension is likely due to the downfall of peripheral arterial resistance through direct or indirect effects on adrenergic signaling. TTX is a high-affinity blocker of voltage-gated Na+ (NaV) channels. In arteries, NaV channels are expressed in sympathetic nerve endings, both in the intima and media. In this present work, we aimed to decipher the role of NaV channels in vascular tone using TTX. We first characterized the expression of NaV channels in the aorta, a model of conduction arteries, and in mesenteric arteries (MA), a model of resistance arteries, in C57Bl/6J mice, by Western blot, immunochemistry, and absolute RT-qPCR. Our data showed that these channels are expressed in both endothelium and media of aorta and MA, in which scn2a and scn1b were the most abundant transcripts, suggesting that murine vascular NaV channels consist of NaV1.2 channel subtype with NaVβ1 auxiliary subunit. Using myography, we showed that TTX (1 µM) induced complete vasorelaxation in MA in the presence of veratridine and cocktails of antagonists (prazosin and atropine with or without suramin) that suppressed the effects of neurotransmitter release. In addition, TTX (1 µM) strongly potentiated the flow-mediated dilation response of isolated MA. Altogether, our data showed that TTX blocks NaV channels in resistance arteries and consecutively decreases vascular tone. This could explain the drop in total peripheral resistance observed during mammal tetrodotoxications.
Real-world data and evidence in health technology assessment: When are they complementary, substitutes, or the only sources of data compared to clinical trials?
Gerard De Pouvourville, Xavier Armoiry, Aurelie Lavorel, Pascal Bilbault, Philippe Maugendre, Lionel Bensimon, Dan Beziz, Patrick Blin, Isabelle Borget, Stephane Bouee, Cecile Collignon, Benoit Dervaux, Isabelle Durand-Zaleski, Marc Julien, Lucie De Leotoing, Laureen Majed, Nicolas Martelli, Thomas Sejourhe, Marie Viprey
Therapies, 2023, 78 (1), pp.81-94. ⟨10.1016/j.therap.2022.11.001⟩
Article dans une revueAbstractWithin the life-cycle assessment of health technologies, real-world data (RWD) have until now been of secondary importance to clinical trial data. The availability of massive, better quality RWD, particularly with the emergence of connected devices, the improvement of methods for characterizing populations, make it possible to have a better insight into the effects of treatment, sometimes on a national scale the importance of RWD is likely to progress in the eyes of health technology assessors, going from being traditionally complementary to possibly replacing clinical trial data. This is the fundamental question that the round table, involving experts from the academic and/or hospital, institutional, and industrial worlds, set out to answer. This work served first to establish the current role of RWD in health technology assessment, by distinguishing the main purposes of RWD, the timing of the evaluation in relation to the life cycle of the technology, and then according to the party commissioning or receiving the outcomes of RWD-based studies. Secondly, the round table proposed six general recommendations for more intensive and decisive use of RWD in the assessment and decision-making process.
Silencing of genes by promoter hypermethylation shapes tumor microenvironment and resistance to immunotherapy in clear-cell renal cell carcinomas
Xiaofan Lu, Yann‐alexandre Vano, Xiaoping Su, Alexandra Helleux, Véronique Lindner, Roger Mouawad, Jean-Philippe Spano, Morgan Roupret, Eva Comperat, Virginie Verkarre, Cheng-Ming Sun, Mostefa Bennamoun, Hervé Lang, Philippe Barthélémy, Wenxuan Cheng, Li Xu, Irwin Davidson, Fangrong Yan, Wolf Hervé Fridman, Catherine Sautès-Fridman, Stéphane Oudard, Gabriel G. Malouf
Cell Reports Medicine, 2023, 4 (11), pp.101287. ⟨10.1016/j.xcrm.2023.101287⟩
Article dans une revueAbstractThe efficacy of immune checkpoint inhibitors varies in clear-cell renal cell carcinoma (ccRCC), with notable primary resistance among patients. Here, we integrate epigenetic (DNA methylation) and transcriptome data to identify a ccRCC subtype characterized by cancer-specific promoter hypermethylation and epigenetic silencing of Polycomb targets. We develop and validate an index of methylation-based epigenetic silencing (iMES) that predicts primary resistance to immune checkpoint inhibition (ICI) in the BIONIKK trial. High iMES is associated with VEGF pathway silencing, endothelial cell depletion, immune activation/suppression, EZH2 activation, BAP1/SETD2 deficiency, and resistance to ICI. Combination therapy with hypomethylating agents or tyrosine kinase inhibitors may benefit patients with high iMES. Intriguingly, tumors with low iMES exhibit increased endothelial cells and improved ICI response, suggesting the importance of angiogenesis in ICI treatment. We also develop a transcriptome-based analogous system for extended applicability of iMES. Our study underscores the interplay between epigenetic alterations and tumor microenvironment in determining immunotherapy response.
Accessory pathways in monozygotic twins with different clinical phenotypes: a case report
Halim Marzak, Simon Fitouchi, Thomas Cardi, Mohamad Kanso, Alexandre Schatz, Laurence Jesel
International Journal of Arrhythmia, 2023, 24 (1), pp.8. ⟨10.1186/s42444-023-00091-5⟩
Article dans une revueAbstractBackground: The atrioventricular reentrant tachycardia (AVRT) is the most common tachycardia associated with accessory pathways (APs). Although sporadic Wolff-Parkinson-White (WPW) syndrome has been well-described, AP occurrence in identical twins with WPW syndrome remains rarely reported. Case presentation: We report a case of 14-year-old monozygotic twin brothers referred for an electrophysiology (EP) study. Twin A presented with recurrent symptomatic narrow complex tachycardia after exercise, noted for 3 years. His 12-lead surface electrocardiogram (ECG) did not show ventricular pre-excitation. However, an orthodromic AVRT utilizing a concealed right posteroseptal AP was found and successfully ablated. AVRT did not recur 12 months after the procedure. Twin B was asymptomatic. During his medical examination for firefighter volunteerism, his 12-lead ECG showed a spontaneous ventricular pre-excitation. EP study revealed a short anterograde right midseptal AP, which was then successfully eliminated by catheter ablation. His 12-lead ECG showed no ventricular pre-excitation recurrence 12 months after the procedure. Conclusions: These identical twin brothers had a right-side AP in almost the same place but showed completely different phenotypes. This case clearly illustrates the difficulty in understanding genetic contribution in the origin of atrioventricular APs. Environmental exposure could play a role in their clinical presentations and AP electrophysiological properties.
Single-Masked Randomized Phase 2 Study Assessing 2 Forms of Hypofractionated Proton Therapy in Patients With Large Choroidal Melanomas
Juliette Thariat, Thibaud Mathis, Tanguy Pace-Loscos, Marie Laure Peyrichon, Celia Maschi, Laurence Rosier, Minh Nguyen, Nicolas Bonnin, Deborah Aloi, Lauris Gastaud, David Gaucher, Jean-Pierre Caujolle, Yann Chateau, Joel Herault
International Journal of Radiation Oncology, Biology, Physics, 2023, 117, pp.357-369. ⟨10.1016/j.ijrobp.2023.04.028⟩
Article dans une revueDistinguishing Plasmin-Generating Microvesicles: Tiny Messengers Involved in Fibrinolysis and Proteolysis
Laurent Plawinski, Audrey Cras, José Rubicel Hernández Lopez, Aurora de la Peña, Angéline van der Heyden, Catherine Belle, Florence Toti, Eduardo Anglés-Cano
International Journal of Molecular Sciences, 2023, 24 (2), pp.1571. ⟨10.3390/ijms24021571⟩
Article dans une revueAbstractA number of stressors and inflammatory mediators (cytokines, proteases, oxidative stress mediators) released during inflammation or ischemia stimulate and activate cells in blood, the vessel wall or tissues. The most well-known functional and phenotypic responses of activated cells are (1) the immediate expression and/or release of stored or newly synthesized bioactive molecules, and (2) membrane blebbing followed by release of microvesicles. An ultimate response, namely the formation of extracellular traps by neutrophils (NETs), is outside the scope of this work. The main objective of this article is to provide an overview on the mechanism of plasminogen reception and activation at the surface of cell-derived microvesicles, new actors in fibrinolysis and proteolysis. The role of microvesicle-bound plasmin in pathological settings involving inflammation, atherosclerosis, angiogenesis, and tumour growth, remains to be investigated. Further studies are necessary to determine if profibrinolytic microvesicles are involved in a finely regulated equilibrium with pro-coagulant microvesicles, which ensures a balanced haemostasis, leading to the maintenance of vascular patency.
Cerebral perfusion using ASL in patients with COVID-19 and neurological manifestations: A retrospective multicenter observational study
François-Daniel Ardellier, Seyyid Baloglu, Magdalena Sokolska, Vincent Noblet, François Lersy, Olivier Collange, Jean-Christophe Ferré, Adel Maamar, Béatrice Carsin-Nicol, Julie Helms, Maleka Schenck, Antoine Khalil, Augustin Gaudemer, Sophie Caillard, Julien Pottecher, Nicolas Lefèbvre, Pierre-Emmanuel Zorn, Muriel Matthieu, Jean Christophe Brisset, Clotilde Boulay, Véronique Mutschler, Yves Hansmann, Paul-Michel Mertes, Francis Schneider, Samira Fafi-Kremer, Mickael Ohana, Ferhat Meziani, Nicolas Meyer, Tarek Yousry, Mathieu Anheim, François Cotton, Hans Rolf Jäger, Stéphane Kremer, Fabrice Bonneville, Gilles Adam, Guillaume Martin-Blondel, Jérémie Pariente, Thomas Geeraerts, Hélène Oesterlé, Federico Bolognini, Julien Messie, Ghazi Hmeydia, Joseph Benzakoun, Catherine Oppenheim, Jean-Marc Constans, Serge Metanbou, Adrien Heintz, Blanche Bapst, Imen Megdiche, Lavinia Jager, Patrick Nesser, Yannick Talla Mba, Thomas Tourdias, Juliette Coutureau, Céline Hemmert, Philippe Feuerstein, Nathan Sebag, Sophie Carre, Manel Alleg, Claire Lecocq, Emmanuel Schmitt, René Anxionnat, François Zhu, Géraud Forestier, Aymeric Rouchaud, Pierre-Olivier Comby, Frederic Ricolfi, Pierre Thouant, Sylvie Grand, Alexandre Krainik, Isaure de Beaurepaire, Grégoire Bornet, Audrey Lacalm, Patrick Miailhes, Julie Pique, Claire Boutet, Xavier Fabre, Béatrice Claise, Sonia Mirafzal, Laure Calvet, Hubert Desal, Jérome Berge, Grégoire Boulouis, Apolline Kazemi, Nadya Pyatigorskaya, Augustin Lecler, Suzana Saleme, Myriam Edjlali-Goujon, Basile Kerleroux, Jean-Christophe Brisset, Samir Chenaf
Journal de Neuroradiologie / Journal of Neuroradiology, 2023, ⟨10.1016/j.neurad.2023.01.005⟩
Article dans une revueAbstractBackground and purpose: Cerebral hypoperfusion has been reported in patients with COVID-19 and neurological manifestations in small cohorts. We aimed to systematically assess changes in cerebral perfusion in a cohort of 59 of these patients, with or without abnormalities on morphological MRI sequences.Methods: Patients with biologically-confirmed COVID-19 and neurological manifestations undergoing a brain MRI with technically adequate arterial spin labeling (ASL) perfusion were included in this retrospective multicenter study. ASL maps were jointly reviewed by two readers blinded to clinical data. They assessed abnormal perfusion in four regions of interest in each brain hemisphere: frontal lobe, parietal lobe, posterior temporal lobe, and temporal pole extended to the amygdalo-hippocampal complex.Results: Fifty-nine patients (44 men (75%), mean age 61.2 years) were included. Most patients had a severe COVID-19, 57 (97%) needed oxygen therapy and 43 (73%) were hospitalized in intensive care unit at the time of MRI. Morphological brain MRI was abnormal in 44 (75%) patients. ASL perfusion was abnormal in 53 (90%) patients, and particularly in all patients with normal morphological MRI. Hypoperfusion occurred in 48 (81%) patients, mostly in temporal poles (52 (44%)) and frontal lobes (40 (34%)). Hyperperfusion occurred in 9 (15%) patients and was closely associated with post-contrast FLAIR leptomeningeal enhancement (100% [66.4%-100%] of hyperperfusion with enhancement versus 28.6% [16.6%-43.2%] without, p=0.002). Studied clinical parameters (especially sedation) and other morphological MRI anomalies had no significant impact on perfusion anomalies.Conclusion: Brain ASL perfusion showed hypoperfusion in more than 80% of patients with severe COVID-19, with or without visible lesion on conventional MRI abnormalities.
Rapid rEcognition of COrticosteRoiD resistant or sensitive Sepsis (RECORDS): study protocol for a multicentre, placebo-controlled, biomarker-guided, adaptive Bayesian design basket trial
Jérôme Fleuriet, Nicholas Heming, Ferhat Meziani, Jean Reignier, Pierre-Louis Declerq, Emmanuelle Mercier, Grégoire Muller, Gwenhaël Colin, Xavier Monnet, Adrien Robine, Shidasp Siami, Fabrice Uhel, Jean-Pierre Quenot, Gaetan Plantefeve, Julio Badie, Francis Schneider, Charles Cerf, Gilles Troché, Mehran Monchi, Jean-Paul Mira, Bruno Francois, Grimaldi Lamiae, Sylvie Chevret, Djillali Annane
BMJ Open, 2023, 13 (3), pp.e066496. ⟨10.1136/bmjopen-2022-066496⟩
Article dans une revueAbstractIntroduction: Corticosteroids affect variably survival in sepsis trials, suggesting heterogeneity in patients’ response to corticosteroids. The RECORDS (Rapid rEcognition of COrticosteRoiD resistant or sensitive Sepsis) trial aimed at defining endotypes associated with adults with sepsis responsiveness to corticosteroids. Methods and analysis: RECORDS, a multicentre, placebo-controlled, biomarker-guided, adaptive Bayesian design basket trial, will randomly assign to a biomarker stratum 1800 adults with community-acquired pneumonia, vasopressor-dependent sepsis, septic shock or acute respiratory distress syndrome. In each stratum, patients will be randomly assigned to receive a 7-day course of hydrocortisone and fludrocortisone or their placebos. Patients with COVID-19 will be treated with a 10-day standard course of dexamethasone and randomised to fludrocortisone or its placebo. Primary outcome will be 90-day death or persistent organ dysfunction. Large simulation study will be performed across a range of plausible scenarios to foresee power to detect a 5%–10% absolute difference with corticosteroids. We will assess subset-by-treatment interaction by estimating in a Bayesian framework two quantities: (1) measure of influence, relying on the value of the estimation of corticosteroids’ effect in each subset, and (2) measure of interaction. Ethics and dissemination: The protocol was approved by the Ethics Committee ( Comité de Protection des Personnes, Dijon, France), on 6 April 2020. Trial results will be disseminated at scientific conferences and results will be published in peer-reviewed journals. Trial registration number ClinicalTrials.gov Registry ( NCT04280497 ).
2022 Update of indications and contraindications for lung transplantation in France
Jérôme Le Pavec, Christophe Pison, Sandrine Hirschi, Vincent Bunel, Pierre Mordant, Olivier Brugière, Morgan Le Guen, Anne Olland, Benjamin Coiffard, Benjamin Renaud-Picard, Adrien Tissot, Geoffrey Brioude, Raphaël Borie, Bruno Crestani, Gaétan Deslée, Sandrine Stelianides, Hervé Mal, Armelle Schuller, Loïc Falque, Gwenaëlle Lorillon, Abdellatif Tazi, Pierre Regis Burgel, Dominique Grenet, Sandra de Miranda, Anne Bergeron, David Launay, Vincent Cottin, Hilario Nunes, Dominique Valeyre, Yurdagul Uzunhan, Grégoire Prévot, Olivier Sitbon, David Montani, Laurent Savale, Marc Humbert, Elie Fadel, Olaf Mercier, Jean François Mornex, Gaëlle Dauriat, Martine Reynaud-Gaubert
Respiratory Medicine and Research, 2023, 83, pp.100981. ⟨10.1016/j.resmer.2022.100981⟩
Article dans une revueAbstractLung transplantation (LTx) is a steadily expanding field. The considerable developments have been driven over the years by indefatigable work conducted at LTx centers to improve donor and recipient selection, combined with multifaceted efforts to overcome challenges raised by the surgical procedure, perioperative care, and long-term medical complications. One consequence has been a pruning away of contraindications over time, which has, in some ways, complicated the patient selection process. The Francophone Pulmonology Society (Société de Pneumology de Langue Française, SPLF) set up a task force to produce up-to-date working guidelines designed to assist pulmonologists in managing end-stage respiratory insufficiency, determining which patients may be eligible for LTx, and appropriately timing LTx-center referral. The task force examined the most recent literature and evaluated the risk factors that limit patient survival after LTx. Ideally, the objectives of LTx are to prolong life while also improving quality of life. The guidelines developed by the task force apply to a limited resource and are consistent with the ethical principles described below.
The interplay between lysosome, protein corona and biological effects of cationic carbon dots: Role of surface charge titratability
Yasmin Arezki, Ezeddine Harmouch, François Delalande, Mickaël Rapp, Christine Schaeffer-Reiss, Ophélie Galli, Sarah Cianférani, Luc Lebeau, Françoise Pons, Carole Ronzani
International Journal of Pharmaceutics, 2023, 645, pp.123388. ⟨10.1016/j.ijpharm.2023.123388⟩
Article dans une revueAbstractCarbon dots (CDs) are nanoparticles (NPs) with potential applications in the biomedical field. When in contact with biological fluids, most NPs are covered by a protein corona. As well, upon cell entry, most NP are sequestered in the lysosome. However, the interplay between the lysosome, the protein corona and the biological effects of NPs is still poorly understood. In this context, we investigated the role of the lysosome in the toxicological responses evoked by four cationic CDs exhibiting protonatable or non-protonatable amine groups at their surface, and the associated changes in the CD protein corona. The four CDs accumulated in the lysosome and led to lysosomal swelling, loss lysosome integrity, cathepsin B activation, NLRP3 inflammasome activation, and cell death by pyroptosis in a human macrophage model, but with a stronger effect for CDs with titratable amino groups. The protein corona formed around CDs in contact with serum partially dissociated under lysosomal conditions with subsequent protein rearrangement, as assessed by quantitative proteomic analysis. The residual protein corona still contained binding proteins, catalytic proteins, and proteins involved in the proteasome, glycolysis, or PI3k-Akt KEGG pathways, but with again a more pronounced effect for CDs with titratable amino groups. These results demonstrate an interplay between lysosome, protein corona and biological effects of cationic NPs in link with the titratability of NP surface charges.
The sustained PGE2 release matrix improves neovascularization and skeletal muscle regeneration in a hindlimb ischemia model
Haoyan Huang, Shang Chen, Hui Cheng, Jiasong Cao, Wei Du, Jun Zhang, Yuqiao Chang, Xiaohong Shen, Zhikun Guo, Zhibo Han, Guoqiang Hua, Zhong-Chao Han, Nadia Benkirane-Jessel, Ying Chang, Zongjin Li
Journal of Nanobiotechnology, 2022, 20 (1), ⟨10.1186/s12951-022-01301-3⟩
Article dans une revueAbstractBackground: The promising therapeutic strategy for the treatment of peripheral artery disease (PAD) is to restore blood supply and promote regeneration of skeletal muscle regeneration. Increasing evidence revealed that prostaglandin E2 (PGE2), a lipid signaling molecule, has significant therapeutic potential for tissue repair and regeneration. Though PGE2 has been well reported in tissue regeneration, the application of PGE2 is hampered by its short half-life in vivo and the lack of a viable system for sustained release of PGE2. Results: In this study, we designed and synthesized a new PGE2 release matrix by chemically bonding PGE2 to collagen. Our results revealed that the PGE2 matrix effectively extends the half-life of PGE2 in vitro and in vivo. Moreover, the PGE2 matrix markedly improved neovascularization by increasing angiogenesis, as confirmed by bioluminescence imaging (BLI). Furthermore, the PGE2 matrix exhibits superior therapeutic efficacy in the hindlimb ischemia model through the activation of MyoD1-mediated muscle stem cells, which is consistent with accelerated structural recovery of skeletal muscle, as evidenced by histological analysis. Conclusions: Our findings highlight the chemical bonding strategy of chemical bonding PGE2 to collagen for sustained release and may facilitate the development of PGE2-based therapies to significantly improve tissue regeneration.
Morpho-functional analysis of patient-derived xenografts reveals differential impact of gastric cancer and chemotherapy on the tumor ecosystem, affecting immune check point, metabolism, and sarcopenia
A. Venkatasamy, E. Guerin, W. Reichardt, V. Devignot, M P Chenard, L. Miguet, B. Romain, A C Jung, I. Gross, C. Gaiddon, G. Mellitzer
Gastric Cancer, 2022, 26 (2), pp.220-233. ⟨10.1007/s10120-022-01359-w⟩
Article dans une revueAbstractAbstract Objectives Gastric cancer (GC) is an aggressive disease due to late diagnosis resulting from the lack of easy diagnostic tools, resistances toward immunotherapy (due to low PD-L1 expression), or chemotherapies (due to p53 mutations), and comorbidity factors, notably muscle atrophy. To improve our understanding of this complex pathology, we established patient-derived xenograft (PDX) models and characterized the tumor ecosystem using a morpho-functional approach combining high-resolution imaging with molecular analyses, regarding the expression of relevant therapeutic biomarkers and the presence of muscle atrophy. Materials and methods GC tissues samples were implanted in nude mice. Established PDX, treated with cisplatin or not, were imaged by magnetic resonance imaging (MRI) and analyzed for the expression of relevant biomarkers (p53, PD-L1, PD-1, HER-2, CDX2, CAIX, CD31, a-SAM) and by transcriptomics. Results Three well-differentiated, one moderately and one poorly differentiated adenocarcinomas were established. All retained the architectural and histological features of their primary tumors. MRI allowed in-real-time evaluation of differences between PDX, in terms of substructure, post-therapeutic changes, and muscle atrophy. Immunohistochemistry showed differential expression of p53, HER-2, CDX2, a-SAM, PD-L1, PD-1, CAIX, and CD31 between models and upon cisplatin treatment. Transcriptomics revealed treatment-induced hypoxia and metabolic reprograming in the tumor microenvironment. Conclusion Our PDX models are representative for the heterogeneity and complexity of human tumors, with differences in structure, histology, muscle atrophy, and the different biomarkers making them valuable for the analyses of the impact of platinum drugs or new therapies on the tumor and its microenvironment.
Acute and Long-Term Cardiovascular Complications among Patients with Sepsis and Septic Shock
Hamid Merdji, Martin Siegemund, Ferhat Meziani
Journal of Clinical Medicine, 2022, 11 (24), pp.7362. ⟨10.3390/jcm11247362⟩
Article dans une revueNon-classical ferroptosis inhibition by a small molecule targeting PHB2
Wei Yang, Bo Mu, Jing You, Chenyu Tian, Huachao Bin, Zhiqiang Xu, Liting Zhang, Ronggang Ma, Ming Wu, Guo Zhang, Chong Huang, Linli Li, Zhenhua Shao, Lunzhi Dai, Laurent Désaubry, Shengyong Yang
Nature Communications, 2022, 13 (1), ⟨10.1038/s41467-022-35294-2⟩
Article dans une revueAbstractFerroptosis is a new type of programmed cell death characterized by iron-dependent lipid peroxidation. Ferroptosis inhibition is thought as a promising therapeutic strategy for a variety of diseases. Currently, a majority of known ferroptosis inhibitors belong to either antioxidants or iron-chelators. Here we report a new ferroptosis inhibitor, termed YL-939, which is neither an antioxidant nor an iron-chelator. Chemical proteomics revealed the biological target of YL-939 to be prohibitin 2 (PHB2). Mechanistically, YL-939 binding to PHB2 promotes the expression of the iron storage protein ferritin, hence reduces the iron content, thereby decreasing the susceptibility to ferroptosis. We further showed that YL-939 could substantially ameliorate liver damage in a ferroptosis-related acute liver injury model by targeting the PHB2/ferritin/iron axis. Overall, we identified a non-classical ferroptosis inhibitor and revealed a new regulation mechanism of ferroptosis. These findings may present an attractive intervention strategy for ferroptosis-related diseases.
Evaluation of furcation involvement with diagnostic imaging methods: a systematic review
Guilhem Jolivet, Olivier Huck, Catherine Petit
Dentomaxillofacial Radiology, 2022, 51 (8), ⟨10.1259/dmfr.20210529⟩
Article dans une revueUpdated indications and contraindications in 2022 for lung transplantation in France
J. Le Pavec, C. Pison, S. Hirschi, V. Bunel, P. Mordant, O. Brugière, A. Olland, B. Coiffard, B. Renaud-Picard, A. Tissot, G. Brioude, R. Borie, B. Crestani, G. Deslée, S. Stelianides, H. Mal, A. Schuller, L. Falque, G. Lorillon, A. Tazi, P.R. Burgel, D. Grenet, S. de Miranda, A. Bergeron, D. Launay, V. Cottin, H. Nunes, D. Valeyre, Y. Uzunhan, G. Prévot, O. Sitbon, D. Montani, L. Savale, M. Humbert, E. Fadel, O. Mercier, J.F. Mornex, G. Dauriat, M. Reynaud-Gaubert, Morgan Le Guen
Revue des Maladies Respiratoires, 2022, 39 (10), pp.855-872. ⟨10.1016/j.rmr.2022.10.005⟩
Article dans une revueAbstractLung transplantation (LTx) is the last-resort treatment for end-stage respiratory insufficiency, whatever its origin, and represents a steadily expanding field of endeavor. Major developments have been impelled over the years by painstaking efforts at LTx centers to improve donor and recipient selection, and multifaceted attempts have been made to meet the challenges raised by surgical management, perioperative care, and long-term medical complications. The number of procedures has increased, leading to improved post-LTx prognosis. One consequence of these multiple developments has been a pruning away of contraindications over time, which has, in some ways, complicated the patient selection process. With these considerations in mind, the Francophone Pulmonology Society (Société de Pneumology de Langue Française [SPLF]) has set up a task force to produce up-to-date working guidelines designed to assist pulmonologists in managing end-stage respiratory insufficiency, determining which patients may be eligible for LTx, and appropriately timing LTx-center referral. The task force has examined the most recent literature and evaluated the risk factors that continue to limit patient survival after LTx. Ideally, the objectives of LTx are to prolong life while improving quality of life. The guidelines developed by the task force apply to a limited resource and are consistent with the ethical principles described below.
Imaging strategies used in emergency departments for the diagnostic workup of COVID-19 patients during the first wave of the pandemic: a cost-effectiveness analysis
Sabrina Kepka, Kevin Zarca, Damien Viglino, Nicolas Marjanovic, Omide Taheri, Olivier Peyrony, Thibaut Desmettre, Valérie Wilme, Tania Marx, Joris Muller, Sebastien Harscoat, Pierrick Le Borgne, Eric Bayle, Nicolas Lefebvre, Yves Hansmann, Samira Fafi-Kremer, Mickaël Ohana, Isabelle Durand Zaleski, Pascal Bilbault
Clinical Microbiology and Infection, 2022, 28 (12), pp.1651.e1-1651.e8. ⟨10.1016/j.cmi.2022.05.036⟩
Article dans une revueAbstractObjectives: Emergency departments (EDs) were on the front line for the diagnostic workup of patients with COVID-19–like symptoms during the first wave. Chest imaging was the key to rapidly identifying COVID-19 before administering RT-PCR, which was time-consuming. The objective of our study was to compare the costs and organizational benefits of triage strategies in ED during the first wave of the COVID-19 pandemic. Methods: We conducted a retrospective study in five EDs in France, involving 3712 consecutive patients consulting with COVID-like symptoms between 9 March 2020 and 8 April 2020, to assess the cost effectiveness of imaging strategies (chest radiography, chest computed tomography (CT) scan in the presence of respiratory symptoms, systematic ultra–low-dose (ULD) chest CT, and no systematic imaging) on ED length of stay (LOS) in the ED and on hospital costs. The incremental cost-effectiveness ratio was calculated as the difference in costs divided by the difference in LOS. Results: Compared with chest radiography, workup with systematic ULD chest CT was the more cost-effective strategy (average LOS of 6.89 hours; average cost of €3646), allowing for an almost 4-hour decrease in LOS in the ED at a cost increase of €98 per patient. Chest radiography (extendedly dominated) and RT-PCR with no systematic imaging were the least effective strategies, with an average LOS of 10.8 hours. The strategy of chest CT in the presence of respiratory symptoms was more effective than the systematic ULD chest CT strategy, with the former providing a gain of 37 minutes at an extra cost of €718. Discussion: Systematic ULD chest CT for patients with COVID-like symptoms in the ED is a cost-effective strategy and should be considered to improve the management of patients in the ED during the pandemic, given the need to triage patients.
Author Correction: Clinical phenotypes and outcomes associated with SARS-CoV-2 variant Omicron in critically ill French patients with COVID-19
Nicolas de Prost, Etienne Audureau, Nicholas Heming, Elyanne Gault, Tài Pham, Amal Chaghouri, Nina de Montmollin, Guillaume Voiriot, Laurence Morand-Joubert, Adrien Joseph, Marie-Laure Chaix, Sébastien Préau, Raphaël Favory, Aurélie Guigon, Charles-Edouard Luyt, Sonia Burrel, Julien Mayaux, Stéphane Marot, Damien Roux, Diane Descamps, Sylvie Meireles, Frédéric Pène, Flore Rozenberg, Damien Contou, Amandine Henry, Stéphane Gaudry, Ségolène Brichler, Jean-François Timsit, Antoine Kimmoun, Cédric Hartard, Louise-Marie Jandeaux, Samira Fafi-Kremer, Paul Gabarre, Malo Emery, Claudio Garcia-Sanchez, Sébastien Jochmans, Aurélia Pitsch, Djillali Annane, Elie Azoulay, Armand Mekontso Dessap, Christophe Rodriguez, Jean-Michel Pawlotsky, Slim Fourati
Nature Communications, 2022, 13 (1), pp.7547. ⟨10.1038/s41467-022-34575-0⟩
Article dans une revueHeparan sulfate proteoglycan-mediated internalization of extracellular vesicles ameliorates liver fibrosis by targeting hepatic stellate cells
Rongrong Li, Chen Wang, Manqian Zhou, Yue Liu, Shang Chen, Zihan Chai, Haoyan Huang, Kaiyue Zhang, Zhibo Han, Guoqiang Hua, Nadia Benkirane-Jessel, Zhong-Chao Han, Zongjin Li
Extracellular Vesicle, 2022, 1, pp.100018. ⟨10.1016/j.vesic.2022.100018⟩
Article dans une revueIntact Fish Skin Graft vs. Standard of Care in Patients with Neuroischaemic Diabetic Foot Ulcers (KereFish Study): An International, Multicentre, Double-Blind, Randomised, Controlled Trial Study Design and Rationale
Dured Dardari, Louis Potier, Ariane Sultan, Maude Francois, Jocelyne M’bemba, Benjamin Bouillet, Lucy Chaillous, Laurence Kessler, Aurelie Carlier, Abdulkader Jalek, Ayoub Sbaa, Laurent Orlando, Elise Bobony, Bruno Detournay, Hilmar Kjartansson, Ragna Bjorg Arsaelsdottir, Baldur Tumi Baldursson, Guillaume Charpentier
Medicina, 2022, 58 (12), pp.1775. ⟨10.3390/medicina58121775⟩
Article dans une revueAbstractBackground: Cell and/or tissue-based wound care products have slowly advanced in the treatment of non-healing ulcers, however, few studies have evaluated the effectiveness of these devices in the management of severe diabetic foot ulcers. Method: This study (KereFish) is part of a multi-national, multi-centre, randomised, controlled clinical investigation (Odin) with patients suffering from deep diabetic wounds, allowing peripheral artery disease as evaluated by an ankle brachial index equal or higher than 0.6. The study has parallel treatment groups: Group 1 treatment with Kerecis® Omega3 Wound™ versus Group 2 treatment with standard of care. The primary objective is to test the hypothesis that a larger number of severe diabetic ulcers and amputation wounds, including those with moderate arterial disease, will heal in 16 weeks when treated with Kerecis® Omega3 Wound™ than with standard of care. Conclusion: This study has received the ethics committee approval of each participating country. Inclusion of participants began in March 2020 and ended in July 2022. The first results will be presented in March 2023. The study is registered in ClinicalTrials.gov as Identifier: NCT04537520.
A Young Couple with Rapidly Progressive Muscle and Respiratory Paralysis
Anaïs Curtiaud, Hamid Merdji, Christelle Mazuet, Pierre H. Boyer, Julien Demiselle
The American Journal of Medicine, 2022, 135 (12), pp.e425-e426. ⟨10.1016/j.amjmed.2022.08.018⟩
Article dans une revueEpileptic seizure-induced syncopal asystole reversed by lacosamide: a case report
Simon Fitouchi, Laurence Jesel, Edouard Hirsch, Halim Marzak
EP-Europace, 2022, 25 (4), pp.1510 - 1510. ⟨10.1093/europace/euac203⟩
Article dans une revueAbstractNo abstract available
Biosensors for the Rapid Detection of Cardiovascular Biomarkers of Vital Interest: Needs, Analysis and Perspectives
Laure Abensur Vuillaume, Justine Frija-Masson, Meriem Hadjiat, Thomas Riquier, Marie-Pia D’ortho, Pierrick Le Borgne, Christophe Goetz, Paul L Voss, Abdallah Ougazzaden, Jean-Paul Salvestrini, Thierry Leïchlé
Journal of Personalized Medicine, 2022, 12, ⟨10.3390/jpm12121942⟩
Article dans une revueAbstractWe have previously surveyed a panel of 508 physicians from around the world about which biomarkers would be relevant if obtained in a very short time frame, corresponding to emergency situations (life-threatening or not). The biomarkers that emerged from this study were markers of cardiovascular disease: troponin, D-dimers, and brain natriuretic peptide (BNP). Cardiovascular disease is a group of disorders affecting the heart and blood vessels. At the intersection of medicine, basic research and engineering, biosensors that address the need for rapid biological analysis could find a place of choice in the hospital or primary care ecosystem. Rapid, reliable, and inexpensive analysis with a multi-marker approach, including machine learning analysis for patient risk analysis, could meet the demand of medical teams. The objective of this opinion review, proposed by a multidisciplinary team of experts (physicians, biologists, market access experts, and engineers), is to present cases where a rapid biological response is indeed valuable, to provide a short overview of current biosensor technologies for cardiac biomarkers designed for a short result time, and to discuss existing market access issues.
Tracheobronchopathia osteochondroplastica: clinical, bronchoscopic, and comorbid features in a case series
Antoine Dumazet, Claire Launois, Francois Lebargy, Romain Kessler, Hervé Vallerand, Pierre Schmitt, Christophe Hermant, Sandra Dury, Maxime Dewolf, Julien Dutilh, Maher Abouda, Marion Ferreira, Ihab Atallah, Samy Lachkar, Jérémy Charriot, Stéphane Jouneau, Yurdagul Uzunhan, Stéphane Chouabe, Benjamin Coiffard, Hervé Dutau, Jean Hagenburg, Amandine Briault, Valérian Dormoy, Marion Lirsac, Jean-Michel Vergnon, Gaetan Deslee, Jeanne-Marie Perotin
BMC Pulmonary Medicine, 2022, 22 (1), pp.423. ⟨10.1186/s12890-022-02225-2⟩
Article dans une revueAbstractBackground. Tracheobronchopathia osteochondroplastica (TO) is a rare condition of unknown etiology. TO is characterized by submucosal nodules, with or without calcifications, protruding in the anterolateral walls of the trachea and proximal bronchi. The objective of this study was to describe TO features and associated comorbidities in a series of patients. Methods. Patients suffering from TO were retrospectively included by investigators from the Groupe d’Endoscopie Thoracique et Interventionnelle Francophone (GETIF). Demographic, clinical, comorbidities, bronchoscopic, functional, and radiological characteristics, and outcomes were recorded and analyzed. Results Thirty-six patients were included (69% male with a mean of 65 ± 12 years). Chronic symptoms were described by 81% of patients including cough (74%) and dyspnea on exertion (74%). TO was associated with COPD in 19% of the cases and gastroesophageal reflux disease in 6%. A mild to severe airflow obstruction was present in 55% of the cases. CT scan showed tracheal submucosal nodules in 93% of patients and tracheal stenosis in 17%. Bronchoscopy identified TO lesions in the trachea in 65% of the cases, and 66% of them were scattered. A bronchoscopic reevaluation was performed in 7 cases, 9 ± 14 months [1–56] after initial diagnosis, and showed the stability of lesions in all cases. Three patients underwent interventional bronchoscopic treatment. Conclusion. The diagnosis of TO relies on typical bronchoscopic findings and can be evoked on a CT scan. Histologic diagnosis can be useful in atypical cases for differential diagnosis. Given its low consequences in terms of symptoms, lung functions, and evolution, no treatment is usually required.
Histone Deacetylase Functions in Gastric Cancer: Therapeutic Target?
Amandine Badie, Christian Gaiddon, Georg Mellitzer
Cancers, 2022, 14 (21), pp.5472. ⟨10.3390/cancers14215472⟩
Article dans une revueAbstractGastric cancer (GC) is one of the most aggressive cancers. Therapeutic treatments are based on surgery combined with chemotherapy using a combination of platinum-based agents. However, at metastatic stages of the disease, survival is extremely low due to late diagnosis and resistance mechanisms to chemotherapies. The development of new classifications has not yet identified new prognostic markers for clinical use. The studies of epigenetic processes highlighted the implication of histone acetylation status, regulated by histone acetyltransferases (HATs) and by histone deacetylases (HDACs), in cancer development. In this way, inhibitors of HDACs (HDACis) have been developed and some of them have already been clinically approved to treat T-cell lymphoma and multiple myeloma. In this review, we summarize the regulations and functions of eighteen HDACs in GC, describing their known targets, involved cellular processes, associated clinicopathological features, and impact on survival of patients. Additionally, we resume the in vitro, pre-clinical, and clinical trials of four HDACis approved by Food and Drug Administration (FDA) in cancers in the context of GC.
Meniscus Repair: From In Vitro Research to Patients
Hélène Vignes, Guillaume Conzatti, Guoqiang Hua, Nadia Benkirane-Jessel
Organoids, 2022, 1 (2), pp.116 - 134. ⟨10.3390/organoids1020010⟩
Article dans une revueAbstractWalking, running, jumping, or even just standing up are habits that we all have to perform in our everyday lives. However, defects in tissues composing the knee joint can drastically alter our ability to complete those simple actions. The knee joint is made up of the interaction between bones (femur, tibia, and patella), tendons, ligaments, and the two menisci (lateral and medial) in order to ensure smooth body movements. The meniscus corresponds to a crescent-shaped fibrocartilaginous tissue, which is found in the knee joint between the femoral condyles and the tibial plateau. It plays a key role in the stability of the knee joint. However, it is quite vulnerable and therefore tears can occur within this tissue and compromise the proper function of the knee. Recently, numerous efforts have been made in order to find solutions to repair and regenerate the meniscus, supported by both bioengineering researchers and orthopedic surgeons. However, due to its poor healing capacity and its complex structure, the reconstruction of the meniscus remains particularly challenging. In this review, the current treatment options will be explained and the possibility of using organoids as building blocks for implant formation or as an in vitro three-dimensional model will be highlighted.
MRI dedicated to the emergency department for diplopia or dizziness: a cost-effectiveness analysis
Sabrina Kepka, Kevin Zarca, François Lersy, Mylène Moris, Julien Godet, Jeanne Deur, Marie Stoessel, Joris Muller, Pierrick Le Borgne, Seyyid Baloglu, Marie-Céline Fleury-Lesaunier, Mathieu Anheim, Pascal Bilbault, Guillaume Bierry, Isabelle Durand Zaleski, Stéphane Kremer
European Radiology, 2022, 32 (11), pp.7344-7353. ⟨10.1007/s00330-022-08791-7⟩
Article dans une revueAbstractOBJECTIVES: The purpose of this study was to compare the costs and organizational benefits of diagnostic workup without and with MRI dedicated to the ED. METHODS: We conducted a prospective observational uncontrolled before-after study in one ED of a university hospital in France from July 1, 2018, and January 3, 2020. We included all consecutive patients presenting with dizziness or diplopia. The main outcomes were the clinical decision time of ED physicians and the total costs for each strategy. Outcomes were compared using propensity score with inverse probability weighting in the 2 arms and an incremental cost-effectiveness ratio (ICER) was calculated. RESULTS: Among the 199 patients during the "before" period (average age: 60.4 years ± 17.6): 112 men (57%), and 181 during the "after" period (average age, 54.8 years ± 18.5): 107 men (59%), the average costs were €2701 (95% CI 1918; 3704) and €2389 (95% CI: €1627; 3280) per patient, respectively. The average time to clinical decision was 9.8 h (95% CI: 8.9 10.7) in the group "before" and 7.7 h (95% CI: 7.1; 8.4) in the group "after" (ICER: €151 saved for a reduction of 1 h in clinical decision time). The probabilistic sensitivity analysis estimated a 71% chance that the MRI dedicated to ED was dominant (less costly and more effective). CONCLUSION: Easy access to MRI in the ED for posterior circulation stroke-like symptoms must be considered a relevant approach to help physicians for an appropriate and rapid diagnostic with reduction of costs. TRIAL REGISTRATION: NCT03660852 KEY POINTS: • A dedicated MRI in the ED for diplopia or dizziness may be considered an efficient strategy improving diagnostic performance, reducing physicians' decision time, and decreasing hospital costs. • This strategy supports clinical decision-making with early treatment and management of patients with posterior circulation-like symptoms in the ED. • There is 71% chance that the MRI dedicated to ED was dominant (less costly and more effective) compared with a strategy without dedicated MRI.
Outcomes of mild-to-moderate postresuscitation shock after non-shockable cardiac arrest and association with temperature management: a post hoc analysis of HYPERION trial data
Ines Ziriat, Aurélie Le Thuaut, Gwenhael Colin, Hamid Merdji, Guillaume Grillet, Patrick Girardie, Bertrand Souweine, Pierre-François Dequin, Thierry Boulain, Jean-Pierre Frat, Pierre Asfar, Bruno Francois, Mickael Landais, Gaëtan Plantefeve, Jean-Pierre Quenot, Jean-Charles Chakarian, Michel Sirodot, Stéphane Legriel, Nicolas Massart, Didier Thevenin, Arnaud Desachy, Arnaud Delahaye, Vlad Botoc, Sylvie Vimeux, Frederic Martino, Jean Reignier, Alain Cariou, Jean Baptiste Lascarrou
Annals of Intensive Care, 2022, 12 (1), pp.96. ⟨10.1186/s13613-022-01071-z⟩
Article dans une revueAbstractAbstract Background Outcomes of postresuscitation shock after cardiac arrest can be affected by targeted temperature management (TTM). A post hoc analysis of the “TTM1 trial” suggested higher mortality with hypothermia at 33 °C. We performed a post hoc analysis of HYPERION trial data to assess potential associations linking postresuscitation shock after non-shockable cardiac arrest to hypothermia at 33 °C on favourable functional outcome. Methods We divided the patients into groups with vs. without postresuscitation (defined as the need for vasoactive drugs) shock then assessed the proportion of patients with a favourable functional outcome (day-90 Cerebral Performance Category [CPC] 1 or 2) after hypothermia (33 °C) vs. controlled normothermia (37 °C) in each group. Patients with norepinephrine or epinephrine > 1 µg/kg/min were not included. Results Of the 581 patients included in 25 ICUs in France and who did not withdraw consent, 339 had a postresuscitation shock and 242 did not. In the postresuscitation-shock group, 159 received hypothermia, including 14 with a day-90 CPC of 1–2, and 180 normothermia, including 10 with a day-90 CPC of 1–2 (8.81% vs. 5.56%, respectively; P = 0.24). After adjustment, the proportion of patients with CPC 1–2 also did not differ significantly between the hypothermia and normothermia groups (adjusted hazards ratio, 1.99; 95% confidence interval, 0.72–5.50; P = 0.18). Day-90 mortality was comparable in these two groups (83% vs. 86%, respectively; P = 0.43). Conclusions After non-shockable cardiac arrest, mild-to-moderate postresuscitation shock at intensive-care-unit admission did not seem associated with day-90 functional outcome or survival. Therapeutic hypothermia at 33 °C was not associated with worse outcomes compared to controlled normothermia in patients with postresuscitation shock. Trial registration ClinicalTrials.gov, NCT01994772
Surface charge influences protein corona, cell uptake and biological effects of carbon dots
Yasmin Arezki, François Delalande, Christine Schaeffer-Reiss, Sarah Cianférani, Mickaël Rapp, Luc Lebeau, Françoise Pons, Carole Ronzani
Nanoscale, 2022, 14 (39), pp.14695-14710. ⟨10.1039/d2nr03611h⟩
Article dans une revueAbstractIn this first quantitative proteomic analysis of the protein corona formed on Carbon dots (CDs), we showed that protein corona identity is influenced by CD surface charge properties, which in turn impacts CD uptake and viability loss in macrophages.
Clinical phenotypes and outcomes associated with SARS-CoV-2 variant Omicron in critically ill French patients with COVID-19
Nicolas de Prost, Etienne Audureau, Nicholas Heming, Elyanne Gault, Tài Pham, Amal Chaghouri, Nina de Montmollin, Guillaume Voiriot, Laurence Morand-Joubert, Adrien Joseph, Marie-Laure Chaix, Sébastien Préau, Raphaël Favory, Aurélie Guigon, Charles-Edouard Luyt, Sonia Burrel, Julien Mayaux, Stéphane Marot, Damien Roux, Diane Descamps, Sylvie Meireles, Frédéric Pène, Flore Rozenberg, Damien Contou, Amandine Henry, Stéphane Gaudry, Ségolène Brichler, Jean-François Timsit, Antoine Kimmoun, Cédric Hartard, Louise-Marie Jandeaux, Samira Fafi-Kremer, Paul Gabarre, Malo Emery, Claudio Garcia-Sanchez, Sébastien Jochmans, Aurélia Pitsch, Djillali Annane, Elie Azoulay, Armand Mekontso Dessap, Christophe Rodriguez, Jean-Michel Pawlotsky, Slim Fourati
Nature Communications, 2022, 13 (1), pp.6025. ⟨10.1038/s41467-022-33801-z⟩
Article dans une revueAbstractInfection with SARS-CoV-2 variant Omicron is considered to be less severe than infection with variant Delta, with rarer occurrence of severe disease requiring intensive care. Little information is available on comorbid factors, clinical conditions and specific viral mutational patterns associated with the severity of variant Omicron infection. In this multicenter prospective cohort study, patients consecutively admitted for severe COVID-19 in 20 intensive care units in France between December 7th 2021 and May 1st 2022 were included. Among 259 patients, we show that the clinical phenotype of patients infected with variant Omicron (n = 148) is different from that in those infected with variant Delta (n = 111). We observe no significant relationship between Delta and Omicron variant lineages/sublineages and 28-day mortality (adjusted odds ratio [95% confidence interval] = 0.68 [0.35-1.32]; p = 0.253). Among Omicroninfected patients, 43.2% are immunocompromised, most of whom have received two doses of vaccine or more (85.9%) but display a poor humoral response to vaccination. The mortality rate of immunocompromised patients infected with variant Omicron is significantly higher than that of nonimmunocompromised patients (46.9% vs 26.2%; p = 0.009). In patients infected with variant Omicron, there is no association between specific sublineages (BA.1/BA.1.1 (n = 109) and BA.2 (n = 21)) or any viral genome polymorphisms/ mutational profile and 28-day mortality.
Avdoralimab (Anti-C5aR1 mAb) Versus Placebo in Patients With Severe COVID-19: Results From a Randomized Controlled Trial (FOR COVID Elimination [FORCE])*
Julien Carvelli, Ferhat Meziani, Jean Dellamonica, Pierre-Yves Cordier, Jerome Allardet-Servent, Megan Fraisse, Lionel Velly, Saber Davide Barbar, Samuel Lehingue, Christophe Guervilly, Maxime Desgrouas, Fabrice Camou, Christelle Piperoglou, Frederic Vely, Olivier Demaria, Joyson Karakunnel, Joanna Fares, Luciana Batista, Federico Rotolo, Julien Viotti, Agnes Boyer-Chammard, Karine Lacombe, Erwan Le Dault, Michel Carles, Nicolas Schleinitz, Eric Vivier
Critical Care Medicine, 2022, 50, pp.1788 - 1798. ⟨10.1097/ccm.0000000000005683⟩
Article dans une revueAbstractOBJECTIVES: Severe COVID-19 is associated with exaggerated complement activation. We assessed the efficacy and safety of avdoralimab (an anti-C5aR1 mAb) in severe COVID-19. DESIGN: FOR COVID Elimination (FORCE) was a double-blind, placebo-controlled study. SETTING: Twelve clinical sites in France (ICU and general hospitals). PATIENTS: Patients receiving greater than or equal to 5 L oxygen/min to maintain Spo 2 greater than 93% (World Health Organization scale ≥ 5). Patients received conventional oxygen therapy or high-flow oxygen (HFO)/noninvasive ventilation (NIV) in cohort 1; HFO, NIV, or invasive mechanical ventilation (IMV) in cohort 2; and IMV in cohort 3. INTERVENTIONS: Patients were randomly assigned, in a 1:1 ratio, to receive avdoralimab or placebo. The primary outcome was clinical status on the World Health Organization ordinal scale at days 14 and 28 for cohorts 1 and 3, and the number of ventilator-free days at day 28 (VFD28) for cohort 2. MEASUREMENTS AND MAIN RESULTS: We randomized 207 patients: 99 in cohort 1, 49 in cohort 2, and 59 in cohort 3. During hospitalization, 95% of patients received glucocorticoids. Avdoralimab did not improve World Health Organization clinical scale score on days 14 and 28 (between-group difference on day 28 of-0.26 (95% CI,-1.2 to 0.7; p = 0.7) in cohort 1 and-0.28 (95% CI,-1.8 to 1.2; p = 0.6) in cohort 3). Avdoralimab did not improve VFD28 in cohort 2 (between-group difference of-6.3 (95% CI,-13.2 to 0.7; p = 0.96) or secondary outcomes in any cohort. No subgroup of interest was identified. CONCLUSIONS: In this randomized trial in hospitalized patients with severe COVID-19 pneumonia, avdoralimab did not significantly improve clinical status at days 14 and 28 (funded by Innate Pharma, ClinicalTrials.gov number, NCT04371367).
Empagliflozin prevents angiotensin II-induced hypertension related micro and macrovascular endothelial cell activation and diastolic dysfunction in rats despite persistent hypertension: Role of endothelial SGLT1 and 2
Christophe Bruckert, Kensuke Matsushita, Ali Mroueh, Said Amissi, Cyril Auger, Ursula Houngue, Lamia Remila, Ahmed Bey Chaker, Sin-Hee Park, Paola Algara-Suarez, Eugenia Belcastro, Laurence Jesel, Patrick Ohlmann, Olivier Morel, Valérie Schini-Kerth
Vascular Pharmacology, 2022, 146, pp.107095. ⟨10.1016/j.vph.2022.107095⟩
Article dans une revueInternational society for heart and lung transplantation statement on transplant ethics
Are Martin Holm, Savitri Fedson, Andrew Courtwright, Anne Olland, Kelly Bryce, Manreet Kanwar, Stuart Sweet, Thomas Egan, Jacob Lavee
The Journal of Heart and Lung Transplantation, 2022, 41 (10), pp.1307-1308. ⟨10.1016/j.healun.2022.05.012⟩
Article dans une revueCarissa edulis Vahl (Apocynaceae) extract, a medicinal plant of Benin pharmacopoeia, induces potent endothelium-dependent relaxation of coronary artery rings involving nitric oxide
Ursula Hounguè, Claire Villette, Jean-Marie Tokoudagba, Ahmed Chaker, Lamia Remila, Cyril Auger, Dimitri Heintz, Fernand Gbaguidi, Valérie Schini-Kerth
Phytomedicine, 2022, 105, pp.154370. ⟨10.1016/j.phymed.2022.154370⟩
Article dans une revueAbstractBackground: Hypertension is a major cardiovascular risk factor that affects most countries including those of Africa. Although Carissa edulis Vahl, Diodia scandens Sw. and Cleome gynandra L. are traditionally used in Benin as antihypertensive treatments with some efficacy mentioned by the local population, their biological activity on the cardiovascular system remains poorly studied. Aim: The study investigated the vasoreactivity of the plants and assessed the underlying mechanisms using isolated arteries. Study design: Aqueous-ethanolic extracts of aerial parts of C. edulis, D. scandens and C. gynandra were prepared by maceration before being subjected to multi-step liquid-liquid fractionation with solvents of increasing polarity. The vasoreactivity of the extracts and fractions were assessed on isolated porcine coronary artery and rat aorta using organ chambers, the role of nitric oxide (NO) using NG-nitro-L-arginine (NO synthase inhibitor), prostanoids using indomethacin (cyclooxygenases inhibitor) and endothelium-dependent hyperpolarization using TRAM-34 plus UCL 1684 (inhibitors of calcium-dependent K+ channels), and the vascular uptake of polyphenols using Neu reagent. Results: The aqueous-ethanolic crude extract of C. edulis (CECE) induced potent relaxations that were exclusively endothelium-dependent and more pronounced than those to D. scandens and C. gynandra. The n-butanolic fraction of C. edulis (CEBF) was more active than the cyclohexane, dichloromethane, and ethyl acetate fractions. The relaxation induced by CECE and CEBF were inhibited by NG-nitro-L-arginine and affected neither by TRAM-34 plus UCL 1684 nor by indomethacin. CEBF induced sustained endothelium-dependent relaxations for at least 60 min, and inhibited, in a concentration-dependent manner, contractions to KCl, CaCl2, U46619 and serotonin in rings with endothelium. Analysis of CEBF by LCsingle bondHRMS indicated the presence of polyphenols, terpenes, and alkaloids. Exposure of coronary artery and aorta rings to CEBF caused the accumulation of polyphenols predominantly in the endothelium. Conclusion: C. edulis leaf extract induced pronounced endothelium-dependent relaxations and inhibited contractile responses by stimulating the endothelial formation of NO. LCsingle bondHRMS analysis of the most active fraction, the butanolic fraction, revealed the presence of numerous compounds including polyphenols, terpenes, and alkaloids. The polyphenols of CEBF accumulated preferentially in the endothelium of the arterial wall. Thus, these observations support the folkloric use of C. edulis in hypertension.
Internalization study of nanosized zeolite crystals in human glioblastoma cells
C Hélaine, Hayriye Özçelik, Sarah Komaty, Abdallah Amedlous, Sajjad Ghojavand, Didier Goux, Richard Retoux, Svetlana Mintova, Valable Samuel
Colloids and Surfaces B: Biointerfaces, 2022, 218, pp.112732. ⟨10.1016/j.colsurfb.2022.112732⟩
Article dans une revueAbstractWhile the use of nanozeolites for cancer treatment holds a great promise, it also requires a better understanding of the interaction between the zeolite nanoparticles and cancer cells and notably their internalization and biodistribution. It is particularly important in situation of hypoxia, a very common situations in aggressive cancers, which may change the energetic processes required for cellular uptake. Herein, we studied, in vitro, the kinetics of the internalization process and the intracellular localization of nanosized zeolite X (FAU-X) into glioblastoma cells. In normoxic conditions, scanning electron microscopy (SEM) showed a rapid cell membrane adhesion of zeolite nanoparticles (< 5 min following application in the cell medium), occurring before an energy-dependent uptake which appeared between 1 h and 4 h. Additionally, transmission electron microscopy (TEM) and flow cytometry analyzes, confirmed that the zeolite nanoparticles accumulate over time into the cytoplasm and were mostly located into vesicles visible at least up to 6 days. Interestingly, the uptake of zeolite nanoparticles was found to be dependent on oxygen concentration, i.e. an increase in internalization in severe hypoxia (0.2 % of O2) was observed. No toxicity of zeolite FAU-X nanoparticles was detected after 24 h and 72 h. The results clearly showed that the nanosized zeolites crystals were rapidly internalized via energy-requiring mechanism by cancer cells and even more in the hypoxic conditions. Once the zeolite nanoparticles were internalized into cells, they appeared to be safe and stable and therefore, they are envisioned to be used as carrier of various compounds to target cancer cells.
Therapeutic effects of peptide P140 in a mouse periodontitis model
Kentaro Akiyama, Kyaw Thu Aung, Laura Talamini, Olivier Huck, Takuo Kuboki, Sylviane Muller
Cellular and Molecular Life Sciences, 2022, 79 (10), ⟨10.1007/s00018-022-04537-2⟩
Article dans une revuePeriodontal Care and Treatment Provision by General Dentists in France
Yoann Maitre, Paul Tramini, Marie-Alix Fauroux, Damien Offner, Frédéric Denis, Kenneth Eaton
International Dental Journal, 2022, 72 (5), pp.667-673. ⟨10.1016/j.identj.2022.02.002⟩
Article dans une revueAbstractAim: In many countries, periodontal surgery is mainly provided by periodontists. This specialty is not recognised in France, where periodontal care and treatment are principally the responsibility of general dentists (GDs). The objective of this study was to investigate the periodontal care provided and factors associated with the treatment of periodontal diseases, including periodontal surgery, by GDs in France. Methods: A national cross-sectional survey of GDs practicing in the French metropolitan area was conducted in 2019. A self-administered questionnaire was sent by mail to the GDs selected by stratified simple random sampling. It included questions on respondents' sociodemographic characteristics and their periodontal practice. A multivariate logistic regression model was employed to identify the factors associated with the practice of periodontal surgery by GDs. Results: Three hundred eighty-five GDs responded (response rate, 23.4%). Their mean age was 45.2 years; 51.2% were male and 83.6% were in private practice. They reported performing selective periodontal examinations such as pocket probing on average for 34.2% of their patients, but only 5.5% of them performed them systematically. Several variables were significantly associated with the provision of periodontal surgical procedures such as the gender of the GDs, full mouth periodontal probing, implantology practice, insufficient fees, or uncertainty about treatment procedure. This survey confirmed the referral of patients for periodontal surgery by a minority of practitioners. It also highlighted insufficient screening and diagnostic procedures for periodontal diseases by GDs. Conclusions: There is a need to improve French GDs' periodontal skills and knowledge and to address other barriers that currently limit their ability to deliver comprehensive periodontal care.
The EXTREME Regimen Associating Cetuximab and Cisplatin Favors Head and Neck Cancer Cell Death and Immunogenicity with the Induction of an Anti-Cancer Immune Response
Justine de Azevedo, Jana Mourtada, Cyril Bour, Veronique Devignot, Philippe Schultz, Christian Borel, Erwan Pencreach, Georg Mellitzer, Christian Gaiddon, Alain Jung
Cells, 2022, 11 (18), ⟨10.3390/cells11182866⟩
Article dans une revueAbstract(1) Background: The first line of treatment for recurrent/metastatic Head and Neck Squamous Cell Carcinoma (HNSCC) has recently evolved with the approval of immunotherapies that target the anti-PD-1 immune checkpoint. However, only about 20% of the patients display a long-lasting objective tumor response. The modulation of cancer cell immunogenicity via a treatment-induced immunogenic cell death is proposed to potentially be able to improve the rate of patients who respond to immune checkpoint blocking immunotherapies. (2) Methods: Using human HNSCC cell line models and a mouse oral cancer syngeneic model, we have analyzed the ability of the EXTREME regimen (combination therapy using the anti-EGFR cetuximab antibody and platinum-based chemotherapy) to modify the immunogenicity of HNSCC cells. (3) Results: We showed that the combination of cetuximab and cisplatin reduces cell growth through both cell cycle inhibition and the induction of apoptotic cell death independently of p53. In addition, different components of the EXTREME regimen were found to induce, to a variable extent, and in a cell-dependent manner, the emission of mediators of immunogenic cell death, including calreticulin, HMGB1, and type I Interferon-responsive chemokines. Interestingly, cetuximab alone or combined with the IC
Trends in the relation between hyperglycemia correction and active Charcot neuroarthropathy: results from the EPICHAR study
Dured Dardari, Sophie Schuldiner, Carole-Anne Julien, Georges Ha Van, Jocelyne M’bemba, Muriel Bourgeon, Ariane Sultan, Marc Lepeut, Sylvie Grandperret-Vauthier, Florence Baudoux, Maud François, Sylvaine Clavel, Jacques Martini, Julien Vouillarmet, Paul Michon, Myriam Moret, Isabelle Dumont, Laurence Kessler, Ionela Stifii, Benjamin Bouillet, Pierre Bonnin, Amal Lemoine, Enrique da Costa Correia, Marie Martine Bonello Faraill, Marie Muller, Marie Cazaubiel, Mohammed Zakarya Zemmache, Agnes Hartemann
BMJ Open Diabetes Research & Care, 2022, 10 (5), pp.e002380. ⟨10.1136/bmjdrc-2021-002380⟩
Article dans une revueAbstractThe pathophysiology of Charcot neuroarthropathy (CN) remains unclear. There are a number of hypotheses but these are not exclusive. In its clinical presentation, this complication intersects with the semiology of diabetic-induced neuropathy, such as peripheral hypervascularization and the appearance of arteriovenous shunt. The EPICHAR study is as yet an unpublished cohort of people living with diabetes complicated by CN (in active or chronic phase). Based on the findings of the EPICHAR study, this study aimed to investigate whether a reduction in the rate of hyperglycemia accompanies the onset of an active phase of CN. Research design and methods Hemoglobin A1c (HbA1c) levels were assessed 3 months (M3) and 6 months (M6) before the diagnosis of active CN (M0). Results: 103 patients living with diabetes and presenting active CN were included between January and December 2019 from the 31 centers participating in this study (30 in France and 1 in Belgium). The mean age of the participants was 60.2±12.2 years; the vast majority were men (71.8%) living with type 2 diabetes (75.5%). Mean HbA1c levels significantly declined between M6 (median 7.70; Q1, Q3: 7.00, 8.55) and M3 (median 7.65; Q1, Q3: 6.90, 8.50) (p=0.012), as well as between M6 and M0 (median 7.40; Q1, Q3: 6.50, 8.50) (p=0.014). No significant difference was found between M3 and M0 (p=0.072). Conclusions: a significant reduction in HbA1c levels seems to accompany the onset of the active phase of CN. Trial registration number NCM03744039.
Coagulopathie et sepsis
Julie Helms, Marine Tschirhart, Anaïs Curtiaud, Laurent Sattler
Médecine Intensive Réanimation, 2022, 31 (4), pp.313-322. ⟨10.37051/mir-00122⟩
Article dans une revueAbstractLa coagulation intravasculaire disséminée (CIVD) est une complication fréquente du sepsis et du choc septique. Alors que l’activation de la coagulation au cours d’un sepsis, conjointement à la mise en jeu de l’immunité innée, participe à la défense de l’hôte contre le pathogène (immunothrombose), son activation dérégulée avec un défaut des systèmes régulateurs anticoagulants et fibrinolytiques dans la CIVD, aboutit à la formation de microthromboses multiples contribuant à la défaillance multiviscérale et à la surmortalité de ces patients. Cette revue de la littérature fait état des dernières avancées physiopathologiques, diagnostiques et thérapeutiques dans la CIVD septique.
Coronary subclavian steal syndrome causing acute coronary syndrome: a case report
Adrien Carmona, Benjamin Marchandot, Mylene Sagnard, Olivier Morel
European Heart Journal. Case Reports, 2022, 6 (9), pp.ytac367. ⟨10.1093/ehjcr/ytac367⟩
Article dans une revueAbstractBackground: Myocardial infarction on non-occluded coronary artery represents a very specific subset of acute coronary syndrome (ACS). Coronary subclavian steal syndrome (CSSS) is defined by a left subclavian artery stenosis in case of (i) left internal mammary artery (LIMA) used to bypass left anterior descending artery (LAD) and (ii) >75% stenosis of the left subclavian artery prior to the origin of the LIMA to LAD graft. Here we report the case of a CSSS causing ACS. Case summary: A 71-year-old man with history of LIMA to LAD coronary artery bypass surgery was admitted to the nephrology intensive care unit for acute kidney injury requiring dialysis. Due to rapid deterioration, altered left ventricular ejection fraction and elevated c-troponin levels, an urgent coronary angiography was performed. It revealed a subtotal occlusion of the left subclavian artery prior to the origin of the LIMA to LAD graft. This was responsible for a severely altered coronary flow in the LIMA and LAD. Revascularization of the proximal left subclavian artery with a stent was performed, enabling instant recovery of distal coronary flows. Discussion: ACS due to CSSS in this report highlights the complexity of the cardio–renal interaction. Patients with coronary artery bypass graft and chronic kidney disease commonly exhibit a higher risk for severe progression of atherosclerosis at multiple sites. CSSS treatments include secondary prevention measures and revascularization (if indicated) such as an endovascular approach.
Silent Hypoxemia in the Emergency Department: A Retrospective Cohort of Two Clinical Phenotypes in Critical COVID-19
Karine Alamé, Elena Laura Lemaitre, Laure Abensur Vuillaume, Marc Noizet, Yannick Gottwalles, Tahar Chouihed, Charles-Eric Lavoignet, Lise Bérard, Lise Molter, Stéphane Gennai, Sarah Ugé, François Lefebvre, Pascal Bilbault, Pierrick Le Borgne
Journal of Clinical Medicine, 2022, 11 (17), pp.5034. ⟨10.3390/jcm11175034⟩
Article dans une revueAbstractIntroduction: Understanding hypoxemia, with and without the clinical signs of acute respiratory failure (ARF) in COVID-19, is key for management. Hence, from a population of critical patients admitted to the emergency department (ED), we aimed to study silent hypoxemia (Phenotype I) in comparison to symptomatic hypoxemia with clinical signs of ARF (Phenotype II). Methods: This multicenter study was conducted between 1 March and 30 April 2020. Adult patients who were presented to the EDs of nine Great-Eastern French hospitals for confirmed severe or critical COVID-19, who were then directly admitted to the intensive care unit (ICU), were retrospectively included. Results: A total of 423 critical COVID-19 patients were included, out of whom 56.1% presented symptomatic hypoxemia with clinical signs of ARF, whereas 43.9% presented silent hypoxemia. Patients with clinical phenotype II were primarily intubated, initially, in the ED (46%, p < 0.001), whereas those with silent hypoxemia (56.5%, p < 0.001) were primarily intubated in the ICU. Initial univariate analysis revealed higher ICU mortality (29.2% versus 18.8%, p < 0.014) and in-hospital mortality (32.5% versus 18.8%, p < 0.002) in phenotype II. However, multivariate analysis showed no significant differences between the two phenotypes regarding mortality and hospital or ICU length of stay. Conclusions: Silent hypoxemia is explained by various mechanisms, most physiological and unspecific to COVID-19. Survival was found to be comparable in both phenotypes, with decreased survival in favor of Phenotype II. However, the spectrum of silent to symptomatic hypoxemia appears to include a continuum of disease progression, which can brutally evolve into fatal ARF.
Impact of diabetes on COVID-19 prognosis beyond comorbidity burden: the CORONADO initiative
Bertrand Cariou, Matthieu Wargny, Anne-Sophie Boureau, Sarra Smati, Blandine Tramunt, Rachel Desailloud, Maylis Lebeault, Coralie Amadou, Deborah Ancelle, Beverley Balkau, Lyse Bordier, Sophie Borot, Muriel Bourgeon, Olivier Bourron, Emmanuel Cosson, Martin Eisinger, Céline Gonfroy-Leymarie, Jean-Baptiste Julla, Lucien Marchand, Laurent Meyer, Dominique Seret-Bégué, Dominique Simon, Ariane Sultan, Charles Thivolet, Anne Vambergue, Camille Vatier, Patrice Winiszewski, Pierre-Jean Saulnier, Bernard Bauduceau, Pierre Gourdy, Samy Hadjadj
Diabetologia, 2022, 65 (9), pp.1436-1449. ⟨10.1007/s00125-022-05734-1⟩
Article dans une revueAbstract<b>Aims/hypothesis: </b>Diabetes has been recognised as a pejorative prognostic factor in coronavirus disease 2019 (COVID-19). Since diabetes is typically a disease of advanced age, it remains unclear whether diabetes remains a COVID-19 risk factor beyond advanced age and associated comorbidities. We designed a cohort study that considered age and comorbidities to address this question.<b>Methods: </b>The Coronavirus SARS-CoV-2 and Diabetes Outcomes (CORONADO) initiative is a French, multicentric, cohort study of individuals with (exposed) and without diabetes (non-exposed) admitted to hospital with COVID-19, with a 1:1 matching on sex, age (±5 years), centre and admission date (10 March 2020 to 10 April 2020). Comorbidity burden was assessed by calculating the updated Charlson comorbidity index (uCCi). A predefined composite primary endpoint combining death and/or invasive mechanical ventilation (IMV), as well as these two components separately, was assessed within 7 and 28 days following hospital admission. We performed multivariable analyses to compare clinical outcomes between patients with and without diabetes.<b>Results:</b> A total of 2210 pairs of participants (diabetes/no-diabetes) were matched on age (mean±SD 69.4±13.2/69.5±13.2 years) and sex (36.3% women). The uCCi was higher in individuals with diabetes. In unadjusted analysis, the primary composite endpoint occurred more frequently in the diabetes group by day 7 (29.0% vs 21.6% in the no-diabetes group; HR 1.43 [95% CI 1.19, 1.72], p<0.001). After multiple adjustments for age, BMI, uCCi, clinical (time between onset of COVID-19 symptoms and dyspnoea) and biological variables (eGFR, aspartate aminotransferase, white cell count, platelet count, C-reactive protein) on admission to hospital, diabetes remained associated with a higher risk of primary composite endpoint within 7 days (adjusted HR 1.42 [95% CI 1.17, 1.72], p<0.001) and 28 days (adjusted HR 1.30 [95% CI 1.09, 1.55], p=0.003), compared with individuals without diabetes. Using the same adjustment model, diabetes was associated with the risk of IMV, but not with risk of death, within 28 days of admission to hospital.<b>Conclusions/interpretation: </b>Our results demonstrate that diabetes status was associated with a deleterious COVID-19 prognosis irrespective of age and comorbidity status.<b>Trial registration: </b>ClinicalTrials.gov NCT04324736.
Patient risk factors for conversion during video-assisted thoracic surgery—the Epithor conversion score
Alex Fourdrain, Olivier Georges, Dominique Gossot, Pierre-Emmanuel Falcoz, Jacques Jougon, Jean-Marc Baste, Charles-Henri Marty-Ane, Pascal Berna
European Journal of Cardio-Thoracic Surgery, 2022, 62 (3), ⟨10.1093/ejcts/ezac249⟩
Article dans une revueAbstractAbstract OBJECTIVES Intraoperative conversion from video-assisted thoracic surgery (VATS) to thoracotomy may occur during anatomical lung resection. The objectives of the present study were to identify risk factors for intraoperative conversion and to develop a predictive score. METHODS We performed a multicentre retrospective analysis of French thoracic surgery departments that contributed data on anatomical lung resections to the Epithor database over a 10-year period (from January-2010 to December-2019). Using univariate and multivariate logistic regression analyses, we determined risk factors for intraoperative conversion and elaborated the Epithor conversion score (ECS). The ECS was then validated in a cohort of patients operated on between January- and June-2020. RESULTS From January-2010 to December-2019, 210,037 patients had been registered in the Epithor database. Of these, 55,030 had undergone anatomical lung resection. We excluded patients who had upfront a thoracotomy or robotic-assisted thoracoscopic surgery (n = 40,293) and those with missing data (6,794). Hence, 7943 patients with intent-to-treat VATS were assessed: 7100 with a full VATS procedure and 843 patients with intraoperative conversion to thoracotomy (conversion rate: 10.6%). Thirteen potential risk factors were identified among patients’ preoperative characteristics and planned surgical procedures and were weighted accordingly to give the ECS. The score showed acceptable discriminatory power (area under the curve: 0.62 in the development cohort and 0.64 in the validation cohort) and good calibration (P = 0.23 in the development cohort and 0.30 in the validation cohort). CONCLUSIONS Thirteen potential preoperative risk factors were identified, enabling us to develop and validate the ECS—an easy-to-use, reproducible tool for estimating the risk of intraoperative conversion during VATS.
High-Dose Dexamethasone and Oxygen Support Strategies in Intensive Care Unit Patients With Severe COVID-19 Acute Hypoxemic Respiratory Failure
Lila Bouadma, Armand Mekontso-Dessap, Charles Burdet, Hamid Merdji, Julien Poissy, Claire Dupuis, Christophe Guitton, Carole Schwebel, Yves Cohen, Cedric Bruel, Mehdi Marzouk, Guillaume Geri, Charles Cerf, Bruno Mégarbane, Pierre Garçon, Eric Kipnis, Benoit Visseaux, Naima Beldjoudi, Sylvie Chevret, Jean-François Timsit, Naima Beldjoudi, Sylvie Chevret, Charles Burdet, Céline Alloux, Fadila Amerali, Béatrice Andriss, Kamyl Baghli, Hélène Brocvielle, Florence Capelle, Ines Chibane, Sarra Dalibey, Nadia Ettalhaoui, Sabrine Lamri, Yohan Maurer, Jean-Marc Mintsa, Alice Oubahim, Marie-Capucine Tellier, Imane Zemihi, Lila Bouadma, Moustafa Abdel-Nabey, Billal Azzouguen, Ghenima Belkessa, Etienne de Montmollin, Veronique Deiler, Claire Dupuis, Aline Fallet, Guillaume Franchineau, Tiphaine Girard, Alexandra Grinea, Pierre Jaquet, Laura Kramer, Fariza Lamara, Lucie Lefevre, Mehdi Marzouk, Juliette Patrier, Simona Presente, Faiza Sayagh, Fabrice Sinnah, Romain Sonneville, Paul-Henri Wicky, Sylia Zmihi, Yves Cohen, Nathalie Barget, Rawan Belmokhtar, Sabrina Brahmi, Naoual Djabra, Nathan Ebstein, Souha Fliss, Amina Gourbdji, William Juguet, Fadhila Messani, Thomas Rambaud, Vanessa Rathouin, Mani Rebai, Marthe Rigal, Julien Schmidt, Marie Soulie, Yacine Tandjaoui-Lombiotte, Anaïs Winchenne, Marianne Ziol, Romain Arrestier, François Bagate, Morgan Benais, Ines Bendib, Le Lan, Brice Benelli, Enora Berti, Astrid Bertier, Guillaume Carteaux, Muriel Carvalho, Pedro Cavaleiro, Nicolas Deprost, Otto Hartman, Anne-Fleur Haudebourg, Delphine Le Febvre de Nailly, Julien Lopinto, Sabrina Mahiou, Paul Masi, Gaël Michaud, Luiza Nait-Chabane, Fariza Ouali, François Perier, Keyvan Razazi, Thiziri Sadaoui, Alaki Thiemele, Samuel Tuffet, Flavien Autron, Pauline Boddaert, Sylvie Brice, Morgan Caplan, Amélie Cerf, Nicolas Cousin, Marie Cuvelliez, Claire Delcourte, Arthur Durand, Raphaël Favory, Ahmed El Kalioubie, Myrtille Gaudel, Alexandre Gaudet, Julien Goutay, Marion Houard, Emmanuelle Jaillette, Mercé Jourdain, Geoffrey Ledoux, Laure Mariller, Guillaume Millot, Anne-Sophie Moreau, Christopher Niles, Saad Nseir, Thierry Onimus, Sébastien Preau, Aurélie Roucou, Anahita Rouze, Ouriel Saura, Arthur Simonnet, Romain Tortuyaux, Hamid Merdji, Hayat Allam, Jessy Cattelan, Raphaël Clere-Jehl, Julie Helms, Kévin Hilt, Anne Hutt-Clauss, Christine Kummerlen, Ferhat Meziani, Alexandra Monnier, Hassène Rahmani, Antoine Studer, Leonie Thiebaut, Aurélie Han Hew Wai, Charles Cerf, David Cortier, Jérôme Devaquet, Dimitri Fremont, Richard Galliot, Fabienne Juster, Mathilde Le Marchand, Lucie Le Meur, Mathilde Neuville, Emmanuel Roux, Guillaume Tachon, Camille Vassord-Dang, Benjamin Zuber, Cédric Bruel, Marie-José Aroulanda, Bryan Berthet-Delteil, Juliette Courtiade-Malher, Alix de Chevigny, Candice Fontaine, Julien Fournier, Sonia Garrigou, Meryam Jardin-Szucs, François Philippart, Sophie Renet, Emmanuelle Sacco, Marc Tran, Christophe Guitton, Delphine Bolle, Jean-Christophe Callahan, Nicolas Chudeau, Cédric Darreau, Séverine Guillarme, Mickael Landais, Laurent Latrouite, Charlène Le Moal, Eliott Lebasnier, Marie-Hélène Leroyer, Rémy Marnai, Juliette Meunier, Catherine Naveau, Marjorie Saint-Martin, Alain Robert, Patrice Tirot, Carole Schwebel, Joanna Bougnaud, Clara Candille, Roselyne Collomb-Muret, Charlotte Cordier, Louis-Marie Galerneau, Côme Gerard, Pierre Nicolas, Amel Refes, Guillaume Rigault, Florian Sigaud, Nicolas Terzi, Ester Terzi, Emmanuelle Turbil, Yann Vallod, Mireille Adda, Claire Bachelier, Marine Bereiziat, Lise Bernard, Radhia Bouzgarrou, Laure Calvet, Pierre Couhault, Elisabeth Coupez, Frédéric Duee, Armelle Gilard, Kévin Grapin, Francis Kinda, Guillaume Laurichesse, Jean-Mathias Liteaudon, Bertrand Souweine, François Thouy, Hervé Declercq, Dominique Descamps, Anne Dewatine, Sabine Janowski, Catherine Senis, Christophe Vinsonneau, Eric Kipnis, Anne Bignon, Tchadie Bommenel, Claude Huriez, Matthieu Duprey, Pierre Garcon, Afef Hammami, Andréa Issad, Marie-Odile Jaccod-Deneuville, Safaâ Kachmar, Ly Van-Vong, Jonathan Zarka, Bruno Mégarbane, Nicolas Deye, Aude Jacob, Isabelle Malissin, Aymen M’rad, Sebastian Voicu, Guillaume Geri, Hélène Chambrin-Lauvray, Ouarda Douache, Mathieu Godement, Romain Jouffroy, Edouard Jullien, Matthieu Petit, Antoine Vieillard-Baron, Alain Cariou, Alexandre Boyer, Patricia Pavese, Bruno Giraudeau
JAMA Internal Medicine, 2022, 182 (9), pp.906. ⟨10.1001/jamainternmed.2022.2168⟩
Article dans une revueAbstractImportance : The benefit of high-dose dexamethasone and oxygenation strategies vs standard of care for patients with severe acute hypoxemic respiratory failure (AHRF) caused by COVID-19 pneumonia is debated. Objectives : To assess the benefit of high-dose dexamethasone compared with standard of care dexamethasone, and to assess the benefit of high-flow nasal oxygen (HFNo2) or continuous positive airway pressure (CPAP) compared with oxygen support standard of care (o2SC). Design, Setting, and Participants : This multicenter, placebo-controlled randomized clinical trial was conducted in 19 intensive care units (ICUs) in France from April 2020 to January 2021. Eligible patients were consecutive ICU-admitted adults with COVID-19 AHRF. Randomization used a 2 × 3 factorial design for dexamethasone and oxygenation strategies; patients not eligible for at least 1 oxygenation strategy and/or already receiving invasive mechanical ventilation (IMV) were only randomized for dexamethasone. All patients were followed-up for 60 days. Data were analyzed from May 26 to July 31, 2021. Interventions : Patients received standard dexamethasone (dexamethasone-phosphate 6 mg/d for 10 days [or placebo prior to RECOVERY trial results communication]) or high-dose dexamethasone (dexamethasone-phosphate 20 mg/d on days 1-5 then 10 mg/d on days 6-10). Those not requiring IMV were additionally randomized to o2SC, CPAP, or HFNo2. Main Outcomes and Measures : The main outcomes were time to all-cause mortality, assessed at day 60, for the dexamethasone interventions, and time to IMV requirement, assessed at day 28, for the oxygenation interventions. Differences between intervention groups were calculated using proportional Cox models and expressed as hazard ratios (HRs). Results : Among 841 screened patients, 546 patients (median [IQR] age, 67.4 [59.3-73.1] years; 414 [75.8%] men) were randomized between standard dexamethasone (276 patients, including 37 patients who received placebo) or high-dose dexamethasone (270 patients). Of these, 333 patients were randomized among o2SC (109 patients, including 56 receiving standard dexamethasone), CPAP (109 patients, including 57 receiving standard dexamethasone), and HFNo2 (115 patients, including 56 receiving standard dexamethasone). There was no difference in 60-day mortality between standard and high-dose dexamethasone groups (HR, 0.96 [95% CI, 0.69-1.33]; P = .79). There was no significant difference for the cumulative incidence of IMV criteria at day 28 among o2 support groups (o2SC vs CPAP: HR, 1.08 [95% CI, 0.71-1.63]; o2SC vs HFNo2: HR, 1.04 [95% CI, 0.69-1.55]) or 60-day mortality (o2SC vs CPAP: HR, 0.97 [95% CI, 0.58-1.61; o2SC vs HFNo2: HR, 0.89 [95% CI, 0.53-1.47]). Interactions between interventions were not significant. Conclusions and Relevance : In this randomized clinical trial among ICU patients with COVID-19–related AHRF, high-dose dexamethasone did not significantly improve 60-day survival. The oxygenation strategies in patients who were not initially receiving IMV did not significantly modify 28-day risk of IMV requirement. Trial Registration : ClinicalTrials.gov Identifier: NCT04344730; EudraCT: 2020-001457-43.
Thromboprophylaxis in critical care
Julie Helms, Saskia Middeldorp, Alex Spyropoulos
Intensive Care Medicine, 2022, 49 (1), pp.75-78. ⟨10.1007/s00134-022-06850-7⟩
Article dans une revueAbstractNo abstract available
Cardiogenic shock among cancer patients
Anais Curtiaud, Clément Delmas, Justine Gantzer, Lara Zafrani, Martin Siegemund, Ferhat Meziani, Hamid Merdji
Frontiers in Cardiovascular Medicine, 2022, 9
Article dans une revueAbstractSophisticated cancer treatments, cardiovascular risk factors, and aging trigger acute cardiovascular diseases in an increasing number of cancer patients. Among acute cardiovascular diseases, cancer treatment, as well as the cancer disease itself, may induce a cardiogenic shock. Although increasing, these cardiogenic shocks are still relatively limited, and their management is a matter of debate in cancer patients. Etiologies that cause cardiogenic shock are slightly different from those of non-cancer patients, and management has some specific features always requiring a multidisciplinary approach. Recent guidelines and extensive data from the scientific literature can provide useful guidance for the management of these critical patients. Even if no etiologic therapy is available, maximal intensive supportive measures can often be justified, as most of these cardiogenic shocks are potentially reversible. In this review, we address the major etiologies that can lead to cardiogenic shock in cancer patients and discuss issues related to its management.
Platelet-to-Lymphocyte Ratio (PLR) Is Not a Predicting Marker of Severity but of Mortality in COVID-19 Patients Admitted to the Emergency Department: A Retrospective Multicenter Study
Paul Simon, Pierrick Le Borgne, François Lefevbre, Lauriane Cipolat, Aline Remillon, Camille Dib, Mathieu Hoffmann, Idalie Gardeur, Jonathan Sabah, Sabrina Kepka, Pascal Bilbault, Charles-Eric Lavoignet, Laure Abensur Vuillaume
Journal of Clinical Medicine, 2022, 11 (16), pp.4903. ⟨10.3390/jcm11164903⟩
Article dans une revueAbstract(1) Introduction: In the present study, we investigate the prognostic value of platelet-tolymphocyte ratio (PLR) as a marker of severity and mortality in COVID-19 infection. (2) Methods: Between 1 March and 30 April 2020, we conducted a multicenter, retrospective cohort study of patients with moderate to severe coronavirus 19 (COVID-19), all of whom were hospitalized after being admitted to the emergency department (ED). (3) Results: A total of 1035 patients were included in our study. Neither lymphocytes, platelets or PLR were associated with disease severity. Lymphocyte count was significantly lower and PLR values were significantly higher in the group of patients who died, and both were associated with mortality in the univariate analysis (OR: 0.524, 95% CI: (0.336-0.815), p = 0.004) and (OR: 1.001, 95% CI: (1.000-1.001), p = 0.042), respectively. However, the only biological parameter significantly associated with mortality in the multivariate analysis was platelet count (OR: 0.996, 95% CI: (0.996-1.000), p = 0.027). The best PLR value for predicting mortality in COVID-19 was 356.6 (OR: 3.793, 95% CI: (1.946-7.394), p < 0.001). (4) Conclusion: A high PLR value is however associated with excess mortality.
Effects of mean arterial pressure target on mottling and arterial lactate normalization in patients with septic shock: a post hoc analysis of the SEPSISPAM randomized trial
Nicolas Fage, Julien Demiselle, Valérie Seegers, Hamid Merdji, Fabien Grelon, Bruno Mégarbane, Nadia Anguel, Jean-Paul Mira, Pierre-François Dequin, Soizic Gergaud, Nicolas Weiss, François Legay, Yves Le Tulzo, Marie Conrad, Remi Coudroy, Frédéric Gonzalez, Christophe Guitton, Fabienne Tamion, Jean-Marie Tonnelier, Jean Pierre Bedos, Thierry van der Linden, Antoine Vieillard-Baron, Eric Mariotte, Gaël Pradel, Olivier Lesieur, Jean-Damien Ricard, Fabien Hervé, Damien Du Cheyron, Claude Guerin, Alain Mercat, Jean-Louis Teboul, Peter Radermacher, Pierre Asfar
Annals of Intensive Care, 2022, 12 (1), pp.78. ⟨10.1186/s13613-022-01053-1⟩
Article dans une revueAbstractBackground: In patients with septic shock, the impact of the mean arterial pressure (MAP) target on the course of mottling remains uncertain. In this post hoc analysis of the SEPSISPAM trial, we investigated whether a low-MAP (65 to 70 mmHg) or a high-MAP target (80 to 85 mmHg) would affect the course of mottling and arterial lactate in patients with septic shock. Methods: The presence of mottling was assessed every 2 h from 2 h after inclusion to catecholamine weaning. We compared mottling and lactate time course between the two MAP target groups. We evaluated the patient's outcome according to the presence or absence of mottling. Results: We included 747 patients, 374 were assigned to the low-MAP group and 373 to the high-MAP group. There was no difference in mottling and lactate evolution during the first 24 h between the two MAP groups. After adjustment for MAP and confounding factors, the presence of mottling ≥ 6 h during the first 24 h was associated with a significantly higher risk of death at day 28 and 90. Patients without mottling or with mottling < 6 h and lactate ≥ 2 mmol/L have a higher probability of survival than those with mottling ≥ 6 h and lactate < 2 mmol/L. Conclusion: Compared with low MAP target, higher MAP target did not alter mottling and lactate course. Mottling lasting for more than 6 h was associated with higher mortality. Compared to arterial lactate, mottling duration appears to be a better marker of mortality.
Integrated molecular and pharmacological characterization of patient-derived xenografts from bladder and ureteral cancers identifies new potential therapies
Hervé Lang, Claire Béraud, Luc Cabel, Jacqueline Fontugne, Myriam Lassalle, Clémentine Krucker, Florent Dufour, Clarice Groeneveld, Victoria Dixon, Xiangyu Meng, Aurélie Kamoun, Elodie Chapeaublanc, Aurélien de Reynies, Xavier Gamé, Pascal Rischmann, Ivan Bieche, Julien Masliah-Planchon, Romane Beaurepere, Yves Allory, Véronique Lindner, Yolande Misseri, François Radvanyi, Philippe Lluel, Isabelle Bernard-Pierrot, Thierry Massfelder
Frontiers in Oncology, 2022, 12, ⟨10.3389/fonc.2022.930731⟩
Article dans une revueAbstractBackground Muscle-invasive bladder cancer (MIBC) and upper urinary tract urothelial carcinoma (UTUC) are molecularly heterogeneous. Despite chemotherapies, immunotherapies, or anti-fibroblast growth factor receptor (FGFR) treatments, these tumors are still of a poor outcome. Our objective was to develop a bank of patient-derived xenografts (PDXs) recapitulating the molecular heterogeneity of MIBC and UTUC, to facilitate the preclinical identification of therapies. Methods Fresh tumors were obtained from patients and subcutaneously engrafted into immune-compromised mice. Patient tumors and matched PDXs were compared regarding histopathology, transcriptomic (microarrays), and genomic profiles [targeted Next-Generation Sequencing (NGS)]. Several PDXs were treated with chemotherapy (cisplatin/gemcitabine) or targeted therapies [FGFR and epidermal growth factor (EGFR) inhibitors]. Results A total of 31 PDXs were established from 1 non-MIBC, 25 MIBC, and 5 upper urinary tract tumors, including 28 urothelial (UC) and 3 squamous cell carcinomas (SCCs). Integrated genomic and transcriptomic profiling identified the PDXs of three different consensus molecular subtypes [basal/squamous (Ba/Sq), luminal papillary, and luminal unstable] and included FGFR3 -mutated PDXs. High histological and genomic concordance was found between matched patient tumor/PDX. Discordance in molecular subtypes, such as a Ba/Sq patient tumor giving rise to a luminal papillary PDX, was observed (n=5) at molecular and histological levels. Ten models were treated with cisplatin-based chemotherapy, and we did not observe any association between subtypes and the response. Of the three Ba/Sq models treated with anti-EGFR therapy, two models were sensitive, and one model, of the sarcomatoid variant, was resistant. The treatment of three FGFR3-mutant PDXs with combined FGFR/EGFR inhibitors was more efficient than anti-FGFR3 treatment alone. Conclusions We developed preclinical PDX models that recapitulate the molecular heterogeneity of MIBCs and UTUC, including actionable mutations, which will represent an essential tool in therapy development. The pharmacological characterization of the PDXs suggested that the upper urinary tract and MIBCs, not only UC but also SCC, with similar molecular characteristics could benefit from the same treatments including anti-FGFR for FGFR3-mutated tumors and anti-EGFR for basal ones and showed a benefit for combined FGFR/EGFR inhibition in FGFR3-mutant PDXs, compared to FGFR inhibition alone.
Une rupture spontanée du tendon de l’extenseur propre du pouce
P. Kauffmann, J. Kau, P. Le Borgne
Annales françaises de médecine d'urgence, 2022, 12 (4), pp.246-247. ⟨10.3166/afmu-2022-0422⟩
Article dans une revueDevelopment of fluorizoline analogues as prohibitin ligands that modulate C-RAF signaling, p21 expression and melanogenesis
Nora Chouha, Hussein Abou Hamdan, Hajime Yurugi, Riku Yoshii, Hiromi Ii, Ahmad Najem, Ghanem E. Ghanem, Susumu Nakata, Krishnaraj Rajalingam, Yu Peng, Dong Wang, Canan Nebigil, Laurent Désaubry
European Journal of Medicinal Chemistry, 2022, 242, pp.114635. ⟨10.1016/j.ejmech.2022.114635⟩
Article dans une revueAbstractFluorizoline is a cytotoxic trifluorothiazoline that targets the scaffold proteins prohibitins-1 and -2 (PHB1/2) to inhibit the kinase C-RAF and promote the expression of the cyclin-dependent kinase inhibitor p21 to induce cancer cell death. In melanocytes, fluorizoline also induces the synthesis of melanin. Herein we report the first structural requirement of fluorizoline analogues for these activities. We identified in particular some compounds that display enhanced anti-C-RAF and anti-MEK activities, and a higher cytotoxicity in HeLa cells compared to fluorizoline. These results provide a foundation for further optimization of PHB ligands for the treatment of cancers. We also discovered an analogue of fluorizoline that displays pharmacological effects opposed to those of fluorizoline and that can be used as a chemical tool to explore PHB signaling in cancers and other diseases.
Acute Right Ventricular Failure and Right-to-Left Shunt Due to Massive Coronary Air Embolism Following MitraClip
Kensuke Matsushita, Marion Kibler, Floriane Zeyons, Sébastien Hess, Olivier Morel, Patrick Ohlmann
Canadian Journal of Cardiology, 2022, 38 (8), pp.1318-1319. ⟨10.1016/j.cjca.2022.02.012⟩
Article dans une revueBack pain prevention program: An evaluation after a 10‐year implementation amongst dental students
Henry Viratelle, Bénédicte Schossig, Xavier van Bellinghen, Gabriel Fernandez de Grado, Anne-Marie Musset, Damien Offner
European Journal of Dental Education, 2022, ⟨10.1111/eje.12843⟩
Article dans une revuePreparation of Pickering Emulsions Stabilized by Modified Silica Nanoparticles via the Taguchi Approach
Fatemeh Heidari, Seid Mahdi Jafari, Aman Mohammad Ziaiifar, Nicolas Anton
Pharmaceutics, 2022, 14 (8), pp.1561. ⟨10.3390/pharmaceutics14081561⟩
Article dans une revueAbstractIn this study, oil-in-water Pickering emulsions (PEs) were prepared by modified silica nanoparticles (MSNs) with cetyltrimethylammonium bromide (CTAB) using the Taguchi approach. The surface modification of SiO 2 nanoparticles (NPs) was performed in different conditions, temperatures, pH levels, and amounts of CTAB as a coating agent, followed by an evaluation of their physicochemical properties. After treatment of the SiO 2 NPs, the relationship of the MSNs' surface properties and their efficiency in stabilizing Pickering emulsions was investigated by considering the zeta potential (ZP) and emulsion physical stability as main responses, respectively. Results disclosed were then supported by additional characterization, such as thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, contact angle (CA), and scanning electron microscopy. Results demonstrated that temperature has the most important role in the treatment of SiO 2 nanoparticles, and allows for the identification of the best experimental conditions, i.e., range of zeta potential of MSNs to produce more efficient NPs, as well as the best stabilization of PEs.
Cationic Carbon Nanoparticles Induce Inflammasome-Dependent Pyroptosis in Macrophages via Lysosomal Dysfunction
Yasmin Arezki, Mickaël Rapp, Luc Lebeau, Carole Ronzani, Françoise Pons
Frontiers in Toxicology, 2022, 4, ⟨10.3389/ftox.2022.925399⟩
Article dans une revueAbstractCarbon nanomaterials, including carbon dots (CDs), form a growing family of engineered nanoparticles (NPs) with widespread applications. As the rapid expansion of nanotechnologies raises safety concerns, interaction of NPs with the immune system is receiving a lot of attention. Recent studies have reported that engineered NPs may induce macrophage death by pyroptosis. Therefore, this study investigated whether cationic CDs induce pyroptosis in human macrophages and assessed the role of inflammasome and lysosome in this process. Cationic CDs were synthetized by microwave-assisted pyrolysis of citric acid and high molecular weight branched polyethyleneimine. The NPs evoked a dose-dependent viability loss in THP-1-derived macrophages. A cell leakage, an increase in IL-1β secretion and an activation of caspase-1 were also observed in response to the NPs. Inhibition of caspase-1 decreased CDinduced cell leakage and IL-1β secretion, while restoring cell viability. Besides, CDs triggered swelling and loss of integrity of lysosome, and inhibition of the lysosomal enzyme cathepsin B decreased CD-induced IL-1β secretion. Thus, our data provide evidence that cationic CDs induce inflammasome-dependent pyroptosis in macrophages via lysosomal dysfunction.
Performance of Early Capillary Refill Time Measurement on Outcomes in Cardiogenic Shock: An Observational, Prospective Multicentric Study
Hamid Merdji, Anais Curtiaud, Antoine Aheto, Antoine Studer, Veli-Pekka Harjola, Alexandra Monnier, Kevin Duarte, Nicolas Girerd, Marion Kibler, Hafid Ait-Oufella, Julie Helms, Alexandre Mebazaa, Bruno Levy, Antoine Kimmoun, Ferhat Meziani
American Journal of Respiratory and Critical Care Medicine, 2022, 206 (10), pp.1230-1238. ⟨10.1164/rccm.202204-0687OC⟩
Article dans une revueAbstractBackground: Identification of cardiogenic shock severity is a critical step to adapt the management level upon admission. Peripheral tissue perfusion signs, simple and reliable markers of tissue hypoperfusion have never been extensively assessed during cardiogenic shock. Methods: All consecutive patients admitted in ICU for cardiogenic shock of two tertiary teaching hospitals were included in a prospective observational study. Macro-hemodynamic parameters (such as heart rate, blood pressure, left ventricular ejection fraction and cardiac index) and peripheral tissue perfusion signs such as capillary refill time on the index fingertip, mottling and Pv-aCO2 (the difference between partial pressure of CO2 in venous blood and arterial blood) were recorded at inclusion (H0), H6, H12, H24 and H48. The composite primary endpoint was the association between 90-day mortality or the need for venoarterial-ECMO support. Results: 61 patients were included; at inclusion, simplified acute physiology score II was 64 (52-77) points. The primary endpoint was met by 42% of patients. Capillary refill time values were significantly higher at all time-points in non survivors or patients needing venoarterial-ECMO support. In univariate analysis, capillary refill time > 3 sec at inclusion was associated with 90-day all-cause mortality or venoarterial-ECMO support (Hazard Ratio of 12.38; 95% CI 2.91 to 52.71). Capillary refill time at inclusion was poorly associated with macrocirculatory parameters but significantly correlated with microcirculatory parameters. Further, capillary refill time added incremental value to Cardshock score, with an AUC combination at 0.93. Conclusion: In patients admitted in ICU for cardiogenic shock, our preliminary data suggest that a prolonged capillary refill time > 3 sec was associated with an early prediction of 90-day mortality or the need for venoarterial-ECMO support
The Role of Denial in Vaccine Skeptics and “Anti-vax” Blame: A Psychodynamic Approach
Olivier Putois, Julie Helms
Frontiers in Psychology, 2022, 13, ⟨10.3389/fpsyg.2022.886368⟩
Article dans une revueAbstractIn this paper, we propose to account for the blame addressed to vaccine skeptics and "anti-vax" (VS and AV) by considering their attitude as the result of the psychological mechanism of denial, understood in a psychodynamic manner. To that effect, we draw on a secondary account of our clinical experience in two hospital units (psychiatry and intensive care unit), and on openly available media material. First, we lay out how VS and AV can be understood as the result from fetishist risk denial, a specific psychological transaction with an object by which VS and AV people feel intimately protected; this object is viewed as so powerful that its protection makes the vaccine appear irrelevant. Second, we show how this mechanism can explain the specific content of the blame frequently addressed to VS and AV, who are reproached with being selfish by vaccinated people and caregivers. We contend that, contrary to common belief, they are thus blamed because they force others (and especially caregivers) to compensate their lack of self-protection and preservation, which derives from their exclusive relation to an almighty object. While such a relation accounts for the unwillingness to consider vaccination, it also explains the harshness of the blame voiced by caregivers, who feel helpless in most situations as they cannot effectively force VS and AV to take care of themselves and others.
Patient-Derived Lung Tumoroids—An Emerging Technology in Drug Development and Precision Medicine
Hélène Lê, Joseph Seitlinger, Véronique Lindner, Anne Olland, Pierre-Emmanuel Falcoz, Nadia Benkirane-Jessel, Eric Quéméneur
Biomedicines, 2022, 10 (7), pp.1677. ⟨10.3390/biomedicines10071677⟩
Article dans une revueAbstractSynthetic 3D multicellular systems derived from patient tumors, or tumoroids, have been developed to complete the cancer research arsenal and overcome the limits of current preclinical models. They aim to represent the molecular and structural heterogeneity of the tumor microenvironment, and its complex network of interactions, with greater accuracy. They are more predictive of clinical outcomes, of adverse events, and of resistance mechanisms. Thus, they increase the success rate of drug development, and help clinicians in their decision-making process. Lung cancer remains amongst the deadliest of diseases, and still requires intensive research. In this review, we analyze the merits and drawbacks of the current preclinical models used in lung cancer research, and the position of tumoroids. The introduction of immune cells and healthy regulatory cells in autologous tumoroid models has enabled their application to most recent therapeutic concepts. The possibility of deriving tumoroids from primary tumors within reasonable time has opened a direct approach to patient-specific features, supporting their future role in precision medicine.
The Conundrum of Occult Cancer Screening in Venous Thromboembolism: Lessons from the REMOTEV Registry
Eléna-Mihaela Cordeanu, Lucas Jambert, Jonathan Tousch, Corina Mirea, Alexandre Delatte, Waël Younes, Bastien Woehl, Claire Harter, Anne-Sophie Frantz, Amer Hamade, Valérie Schini-Kerth, Patrick Ohlmann, Emmanuel Andres, Dominique Stephan
Medicina, 2022, 58 (7), pp.913. ⟨10.3390/medicina58070913⟩
Article dans une revueAbstract(1) Background and Objectives: Venous thromboembolism (VTE) is strongly associated with cancer, and may be the first event revealing occult neoplasia. Nonetheless, the reasonable extent of the etiological assessment after an unprovoked VTE event remains debated. The main objective of this study was to evaluate the incidence of occult neoplasia one year after an episode of VTE, in consecutively hospitalized patients for VTE from the REMOTEV registry. The secondary objectives were to assess the performance of the various tests used for occult cancer screening in a real-life setting and analyze the risk factors associated with the discovery of cancer and the 1-year prognosis.<p>(2) Methods: REMOTEV is a prospective, non-interventional cohort study of patients with acute VTE. Patients included in the registry from 23 October 2013 to 28 July 2018 were analyzed after a follow-up of 12 months. Cancer detection was performed according to local practices and consisted of a limited strategy to which an abdominal ultrasound was added. In the presence of suggestive clinical manifestations, further examinations were performed on an individual basis. (3) Results: A total of 993 patients were included in the study. At 1 year, the incidence of newly diagnosed cancer was low (5.3%). Half of the detected cancers were metastatic at discovery (51%) and had a poor global prognosis (32% of mortality at 1 year). Admission pulmonary CT scans as well as (thoracic)-abdomino-pelvic CT scans (when performed) were responsible for the majority of detected cancers. Age over 65 years and the concomitant presence of an unusual site and lower-limb deep vein thrombosis were the only factors associated with occult neoplasia in this cohort. After 1-year FU, mortality was higher in cancer patients (HR 6.0 (CI 95% 3.5-10.3, p < 0.0001)), and cancer evolution was the leading cause of death in the cancer group. (4) Conclusions: In REMOTEV, VTE-revealed occult cancer prevalence was low, but similar to recent reports and associated with higher age, multiple thrombotic sites and worse prognosis.</p>
Serum phosphate level and its kinetic as an early marker of acute kidney injury in tumor lysis syndrome
Marie Lemerle, Aline Schmidt, Valérie Thepot-Seegers, Achille Kouatchet, Valérie Moal, Melina Raimbault, Corentin Orvain, Jean-François Augusto, Julien Demiselle
Journal of Nephrology, 2022, 35 (6), pp.1627-1636. ⟨10.1007/s40620-022-01263-7⟩
Article dans une revueFeasibility and efficacy of combined pancreatic islet-lung transplantation in cystic fibrosis-related diabetes–PIM study: A multicenter phase 1–2 trial
Luc Rakotoarisoa, Clothilde Wagner, Marion Munch, Benjamin Renaud Picard, Dominique Grenet, Anne Olland, Michel Greget, Iulian Enescu, Florence Bouilloud, Pierre Bonnette, Axel Guth, Domenico Bosco, Catherine Mercier, Muriel Rabilloud, Thierry Berney, Pierre Yves Benhamou, Gilbert Massard, Coralie Camilo, Cyrille Colin, Cécile Arnold, Romain Kessler, Laurence Kessler
American Journal of Transplantation, 2022, 22 (7), pp.1861-1872. ⟨10.1111/ajt.17058⟩
Article dans une revueAbstractCystic fibrosis-related diabetes (CFRD) is a common complication of cystic fibrosis (CF), and restoring metabolic control in these patients may improve their management after lung transplantation. In this multicenter, prospective, phase 1–2 trial, we evaluate the feasibility and metabolic efficacy of combined pancreatic islet-lung transplantation from a single donor in patients with CFRD, terminal respiratory failure, and poorly controlled diabetes. Islets were infused via the portal vein under local anesthesia, 1week after lung transplantation. At 1 year, the primary outcome was transplant success as evaluated by a composite score including four parameters (weight, fasting glycemia, HbA1c, and insulin requirements). Ten participants (age: 24 years [17–31], diabetes duration: 8 years [4–12]) received a combined islet-lung transplant with 2892 IEQ/kg [2293–6185]. Transplant success was achieved in 7 out of 10 participants at 1y-ear post transplant. Fasting plasma C-peptide increased from 0.91 μg/L [0.56–1.29] to 1.15 μg/L [0.77–2.2], HbA1c decreased from 7.8% [6.5–8.3] (62 mmol/mol [48–67]) to 6.7% [5.5–8.0] (50 mmol/mol [37–64]), with 38% decrease in daily insulin doses. No complications related to the islet injection procedure were reported. In this pilot study, combined pancreatic islet-lung transplantation restored satisfactory metabolic control and pulmonary function in patients with CF, without increasing the morbidity of lung transplantation.
Nano-Structured Ridged Micro-Filaments (≥100 µm Diameter) Produced Using a Single Step Strategy for Improved Bone Cell Adhesion and Proliferation in Textile Scaffolds.
N. Behary, S. Eap, A. Cayla, Feng Hildebrand, N. Benkirane-Jessel, C. Campagne
Molecules, 2022, Molecules, 27, ⟨10.3390/molecules27123790⟩
Article dans une revueAbstractTextile scaffolds that are either 2D or 3D with tunable shapes and pore sizes can be made through textile processing (weaving, knitting, braiding, nonwovens) using microfilaments. However, these filaments lack nano-topographical features to improve bone cell adhesion and proliferation. Moreover, the diameter of such filaments should be higher than that used for classical textiles (10−30 µm) to enable adhesion and the efficient spreading of the osteoblast cell (>30 µm diameter). We report, for the first time, the fabrication of biodegradable nanostructured cylindrical PLLA (poly-L-Lactic acid) microfilaments of diameters 100 µm and 230 µm, using a single step melt-spinning process for straightforward integration of nano-scale ridge-like structures oriented in the fiber length direction. Appropriate drawing speed and temperature used during the filament spinning allowed for the creation of instabilities giving rise to nanofibrillar ridges, as observed by AFM (Atomic Force Microscopy). These micro-filaments were hydrophobic, and had reduced crystallinity and mechanical strength, but could still be processed into 2D/3D textile scaffolds of various shapes. Biological tests carried out on the woven scaffolds made from these nano-structured micro filaments showed excellent human bone cell MG 63 adhesion and proliferation, better than on smooth 30 µm- diameter fibers. Elongated filopodia of the osteoblast, intimately anchored to the nano-structured filaments, was observed. The filaments also induced in vitro osteogenic expression, as shown by the expression of osteocalcin and bone sialoprotein after 21 days of culture. This work deals with the fabrication of a new generation of nano-structured micro-filament for use as scaffolds of different shapes suited for bone cell engineering.
ABCC6 deficiency and bone loss: A double benefit of etidronate for patient presenting with pseudoxanthoma elasticum?
Gilles Kauffenstein, Daniel Chappard, Georges Leftheriotis, Ludovic Martin
Experimental Dermatology, 2022, 31 (10), pp.1635-1637. ⟨10.1111/exd.14636⟩
Article dans une revueBiodegradation of a Magnesium Alloy Fixation Screw Used in a Guided Bone Regeneration Model in Beagle Dogs
Patrick Rider, Željka Perić Kačarević, Akiva Elad, Daniel Rothamel, Gerrit Sauer, Fabien Bornert, Peter Windisch, Dávid Hangyási, Balint Molnar, Bernhard Hesse, Michel Assad, Frank Witte
Materials, 2022, 15 (12), ⟨10.3390/ma15124111⟩
Article dans une revueAbstractNowadays, the most commonly used fixation systems are non-resorbable, but new resorbable magnesium alloy fixation screws have been introduced recently. Therefore, the aim of this study was to compare the magnesium fixation screw and the commonly used non-resorbable titanium screw in an animal model. Four 3-wall defect sites were covered with collagen membranes in the mandible of twenty beagle dogs (two sites on the left and two on the right). Each membrane was fixed with either four magnesium screws or four titanium screws. Post-operative follow-up revealed the expected observations such as transient inflammation and pain. Both groups showed a good healing response, with no differences between groups. Micro-CT analysis showed no significant difference between groups in terms of BV/TV or soft tissue volume. The void volume in the magnesium fixation screw group continued to decrease on average between the different timepoints, but not significantly. Furthermore, a gradual progression of the degradation process of the magnesium screws was observed in the same group. Magnesium screws and titanium screws showed equal performance in tissue regeneration according to GBR principles. An additional advantage of magnesium screws is their resorbable nature, which eliminates the need for a second surgical step to remove the screws.
Clinical practice versus guidelines for the screening of cystic fibrosis-related diabetes: A French survey from the 47 centers
Laurence Weiss, Olivia Ronsin, Quitterie Reynaud, Michel Abely, Laurent Mely, Pierre-Régis Burgel, Jacques Beltrand, Laurence Kessler
Journal of Clinical and Translational Endocrinology, 2022, 28, pp.100298. ⟨10.1016/j.jcte.2022.100298⟩
Article dans une revueOrofacial problems in scuba diving: prevalence and prevention—a large-scale survey among civilian divers in France
Paul-Alexandre Moyaux, Gabriel Fernandez de Grado, Anne-Marie Musset, Damien Offner
Odontology, 2022, 110 (4), pp.814-823. ⟨10.1007/s10266-022-00714-8⟩
Article dans une revueAbstractSelf-contained underwater breathing apparatus (SCUBA) diving is becoming widely democratized among hobbyist practitioners. It can cause orofacial problems, mostly linked to pressure changes. The aim of this study was to assess the prevalence of these problems and to analyze civilian divers' behavior about their dental prevention in France, via a cross-sectional study. Data from 1015 French civilian divers were collected via a nationwide online questionnaire in which participants indicated information concerning orofacial experienced problems during their diving activity, and their medical preventive habits. As results, oral manifestations were experienced by 25.2% of the divers, including barodontalgia (10.8%), mouth syndrome (13.4%), gum pain (2.8%) and dental fractures caused by barotrauma (3.7%) or shocks (1.9%). Mouth syndrome was more frequent among women (18.6%) and divers aged between 18 and 34 years (18.9%). The prevalence of dental fractures increased significantly with age. High diving level was associated with more frequent barodontalgia (17.5%), gum pain (7%) and barotrauma (7.6%). Among respondents, 43.5% completed a dental examination before a diving season and showed fewer oral problems during their scuba diving practice than those who did not. In conclusion, oral problems in scuba diving represent frequent events that can compromise the safety of divers. Despite awareness rising, there is a lack of recourse to the dentist. This leads to incomplete information, especially concerning the preventive means available to divers.
Prevalence of anti-TNF contraindications in Crohn’s disease: A cross-sectional survey from the GETAID
Aurelien Amiot, Philippe Seksik, Jean-Marie Reimund, Maria Nachury, Romain Altwegg, Arnaud Bourreille, Stephanie Viennot, Mathurin Fumery, Xavier Roblin, Mélanie Serrero, Matthieu Allez, Claire Painchart, Elise Chanteloup, Lucine Vuitton, Ginette Fotsing, Anthony Buisson, Baya Coulibaly, Stephane Nancey, Cyrielle Gilletta, Laurianne Plastaras, Vered Abitbol, Lucas Guillo, Marion Simon, Stephane Nahon, David Laharie, Laurent Peyrin-Biroulet, Guillaume Bouguen
Digestive and Liver Disease, 2022, 54 (10), pp.1350-1357. ⟨10.1016/j.dld.2022.04.011⟩
Article dans une revueAbstractBACKGROUND: The exact rate of contraindications to anti-TNF therapy and physician perspectives on treatment choices facing to anti-TNF contraindication, are poorly reported. METHODS: A two-week cross-sectional study was conducted in 31 centres. Physicians completed a questionnaire for a total of 1,314 consecutive outpatients with Crohn’s disease, assessing each patient’s potential contraindications to anti-TNF therapy, the choice of alternative therapy to anti-TNFs, and their preference in an unrestricted reimbursement setting. RESULTS: Among the 1,293 responses to the first item, 148 (11.5%) reported 32 absolute contraindications (2.5%) and 116 relative contraindications (9.0%) to anti-TNF therapy. When asked about their preference of alternative therapies in those cases with contraindications to anti-TNF, physicians chose ustekinumab and vedolizumab, 75.6% and 23.9%, respectively. In multivariable analysis, the choice of vedolizumab was the preferred choice for patients aged > 60 years with the L2 phenotype and the absence of perianal lesions. In a hypothetical setting of unrestricted reimbursement, anti-TNFs remained physicians’ preferred first-line biological therapy choice for 78.2%. CONCLUSION: Anti-TNF contraindications occurred in up to 11.5% of patients with Crohn’s disease. Physicians’ choices for alternative therapy to anti-TNF relied on ustekinumab in 75.6% and vedolizumab in 23.9% of these cases. This choice was driven mainly by phenotypical criteria and age.
M101, a therapeutic oxygen carrier derived from Arenicola marina, decreased Porphyromonas gingivalis ‐induced hypoxia and improved periodontal healing
Fareeha Batool, Catherine Petit, Céline Stutz, Hayriye Özcelik, Pierre‐yves Gegout, Nadia Benkirane-Jessel, Eric Delpy, Franck Zal, Elisabeth Leize‐zal, Olivier Huck
Journal of periodontology, 2022, 93 (11), pp.1712-1724. ⟨10.1002/JPER.22-0006⟩
Article dans une revuePasteurized Akkermansia muciniphila reduces periodontal and systemic inflammation induced by Porphyromonas gingivalis in lean and obese mice
Hannah Mulhall, Jeanne Dichiara, Olivier Huck, Salomon Amar
Journal of Clinical Periodontology, 2022, 49 (7), pp.717-729. ⟨10.1111/jcpe.13629⟩
Article dans une revueAbstractAim: The aim of this study was to evaluate the effect of the administration of pasteurized Akkermansia muciniphila and Amuc_1100 on periodontal destruction in lean and obese mice and to determine the impact of the mode of administration. Materials and Methods: Porphyromonas gingivalis ‐associated experimental periodontitis was induced in lean and obese mice. After 3 weeks, live, pasteurized A. muciniphila or Amuc_1100 was administered by oral or gastric gavage for three additional weeks. Moreover, an evaluation of the interaction between A. muciniphila and P. gingivalis was performed by RNA‐sequencing, and cytokines secretion was measured in exposed macrophages. Results: Oral administration of live, pasteurized A. muciniphila or Amuc_1100 significantly decreased P. gingivalis ‐induced periodontal destruction and inflammatory infiltrate in lean and obese mice and contributed to the reduction of the plasma level of TNF‐α and to the increase of IL‐10. The co‐culture of A. muciniphila and P. gingivalis induced an increased expression of genes linked to the synthesis of monobactam‐related antibiotics in A. muciniphila , while a decrease of the gingipains and type IX secretion system was observed in P. gingivalis . In P. gingivalis ‐infected macrophages, pasteurized A. muciniphila decreased TNF‐α and increased IL‐10 levels. Conclusions: Pasteurized A. muciniphila can counteract P. gingivalis ‐associated periodontal destruction.
Molecular Mechanisms Responsible for In Vitro Cytotoxic Attributes of Conyza bonariensis Extract against Lymphoblastic Leukaemia Jurkat Cells
Mohammad Saleem, Valérie Schini-Kerth, Khalid Hussain, Syed H Khalid, Muhammad Asif, Mahmoud Alhosin, Muhammad Faheem Akhtar, Bashir Ahmad, Atif Raza, Mahrukh M
Anti-Cancer Agents in Medicinal Chemistry, 2022, 22 (9), pp.1793-1801
Article dans une revueAbstractConyza bonariensis is known to have anti-cancer properties. Objective: The current study investigated the in vitro pro-apoptotic properties of Conyza bonariensis (C. bonariensis) towards human lymphoblastic leukemia Jurkat cells. Methods: Ariel parts of C. bonariensis were macerated in a non-polar (n-Hexane) solvent. MTS cell viability assay was employed to determine the cytotoxic activity of the extract towards human leukemia Jurket cells and normal Peripheral Blood Mononuclear Cells (PBMCs). The phytochemical composition of the extract was screened using HPLC method. Flow cytometric studies (FACS) were conducted to explore the pro-apoptotic potential of the extract. Western blot studies were employed to identify the molecular targets involved in the induction of apoptosis. Results: The n-hexane extract showed selective cytotoxic activity towards Jurkat cells. FACS analysis indicated that the extract induced early and late apoptosis in Jurkat cells. Western blot studies revealed that the extract downregulated the expression of DNMT1, SIRT1, and UHRF1 with a simultaneous up-regulation of p73 and caspases-3 proteins expression. HPLC characterization of the extract revealed the presence of phenolic compounds. Conclusion: Overall, these findings demonstrate that the anti-cancer effects of a Conyza bonariensis extract towards human lymphoblastic leukemia Jurkat cells are due to the modulation of the activity of multiple oncogenic and tumor suppressor proteins. Phenolic contents of the extract are proposed to be responsible for these activities.
Chronic lung allograft dysfunction is associated with an early increase of circulating cytotoxic CD4+CD57+ILT2+ T cells, selectively inhibited by the immune check-point HLA-G
Olivier Brugière, Domitille Mouren, Julie Trichereau, Alexandre Vallée, Isabelle Kuzniak, Sandrine Hirschi, Benjamin Renaud-Picard, Martine Reynaud-Gaubert, Ana Nieves, Vincent Bunel, Jonathan Messika, Xavier Demant, Julie Macey, Jérôme Le Pavec, Gaëlle Dauriat, Christel Saint-Raymond, Loic Falque, Jean-François Mornex, Adrien Tissot, Aurore Foureau, Aurélie Le Borgne Krams, Véronique Bousseau, Antoine Magnan, Clément Picard, Antoine Roux, Edgardo Carosella, Joel Lemaoult, Nathalie Rouas-Freiss
The Journal of Heart and Lung Transplantation, 2022, 41 (5), pp.626-640. ⟨10.1016/j.healun.2022.01.013⟩
Article dans une revueAbnormal liver tests and non-alcoholic fatty liver disease predict disease progression and outcome of patients with Covid-19
Simona Tripon, Pascal Bilbault, Thibaut Fabacher, Nicolas Lefebvre, Sylvain Lescuyer, Emmanuel Andres, Elise Schmitt, Sabrina Garnier-Kepka, Pierrick Le Borgne, Joris Muller, Hamid Merdji, Frederic Chaffraix, Didier Mutter, Thomas F Baumert, Ferhat Meziani, Michel Doffoel
Clinics and Research in Hepatology and Gastroenterology, 2022, 46 (5), pp.101894. ⟨10.1016/j.clinre.2022.101894⟩
Article dans une revueAbstractBackground and aims: Coronavirus disease 2019 (COVID-19) is a serious public health issue that became rapidly pandemic. Liver injury and comorbidities, including metabolic syndrome, are associated with severe forms of the disease. This study sought to investigate liver injury, clinical features, and risk factors in patients with mild, moderate, and severe COVID-19. Methods: We retrospectively included all consecutive patients hospitalized with laboratoryconfirmed COVID-19 between February, 22 and May 15, 2020 at the emergency rooms of a French tertiary hospital. Medical history, symptoms, biological and imaging data were collected. Results: Among the 1,381 hospitalizations for COVID-19, 719 patients underwent liver tests on admission and 496 (68.9%) patients displayed abnormal liver tests. Aspartate aminotransferase was most commonly abnormal in 57% of cases, followed by gammaglutamyl transferase, alanine aminotransferase, albumin, alkaline phosphatase, and total bilirubin in 56.5%, 35.9%, 18.4%, 11.4%, and 5.8%. The presence of hepatocellular type more than 2xULN was associated with a higher risk of hospitalization and a worse course of severe disease (odd ratio [OR] 5.599; 95%CI: 1.27–23.86; p=0.021; OR 3.404; 95% CI: 2.12–5.47; p <0.001 respectively). A higher NAFLD fibrosis score was associated with a higher risk of hospitalization (OR 1.754; 95%CI: 1.27–2.43, p<0.001). In multivariate analyses, patients with high fibrosis-4 index had a 3-fold greater risk of severe disease (p <0.001). Conclusion: Abnormal liver tests are common in patients with COVID-19 and could predict the outcome. Patients with non-alcoholic fatty liver disease and liver fibrosis are at higher risk of progressing to severe COVID-19.
Représentation de la sphère buccale dans la bande dessinée médicale, la perception de l’enfant
Marion Strub, Manal Chkili, François Clauss, Marie-Cécile Manière, Delphine Wagner, Odile Rohmer
Soins Pédiatrie/Puériculture, 2022, 43 (326), pp.39-42. ⟨10.1016/j.spp.2022.03.009⟩
Article dans une revueImpact of ex vivo lung perfusion on brain-dead donor lung utilization: The French experience
Naïssa Abdoul, Camille Legeai, Christelle Cantrelle, Olaf Mercier, Anne Olland, Pierre Mordant, Pascal Alexandre Thomas, Jacques Jougon, Adrien Tissot, Jean-Michel Maury, Édouard Sage, Richard Dorent
American Journal of Transplantation, 2022, 22 (5), pp.1409-1417. ⟨10.1111/ajt.16953⟩
Article dans une revueAbstractAbstract Ex vivo lung perfusion (EVLP) is a valuable method for expanding the lung donor pool. Its indications currently differ across centers. This national retrospective cohort study aimed to describe the profile of donors with lungs transplanted after EVLP and determine the effectiveness of EVLP on lung utilization. We included brain-dead donors with at least one lung offered between 2012 and 2019 in France. Lungs transplanted without or after EVLP were compared with those that were rejected. Donor group phenotypes were determined with multiple correspondence analysis (MCA). The association between donor factors and lung transplantation was assessed with a multivariable multinomial logistic regression. MCA revealed that donors whose lungs were transplanted after EVLP had profiles similar to the donors whose lungs were declined and quite different from those of donors with lungs transplanted without EVLP. Donor predictors of graft nonuse included age ≥50 years, smoking history, PaO2 /FiO2 ratio ≤300 mmHg, abnormal chest imaging, and purulent secretions. EVLP increased utilization of lungs from donors with a smoking history, PaO2 /FiO2 ratio ≤300 mmHg, and abnormal chest imaging.
Extracorporeal Membrane Oxygenation for Respiratory Failure Related to COVID-19: A Nationwide Cohort Study
Nicolas Nesseler, Guillaume Fadel, Alexandre Mansour, Marylou Para, Pierre-Emmanuel Falcoz, Nicolas Mongardon, Alizée Porto, Astrid Bertier, Bruno Levy, Cyril Cadoz, Pierre-Grégoire Guinot, Olivier Fouquet, Jean-Luc Fellahi, Alexandre Ouattara, Julien Guihaire, Vito-Giovanni Ruggieri, Philippe Gaudard, François Labaste, Thomas Clavier, Kais Brini, Nicolas Allou, Corentin Lacroix, Juliette Chommeloux, Guillaume Lebreton, Michael A Matthay, Sophie Provenchere, Erwan Flécher, André Vincentelli
Anesthesiology, 2022, 136 (5), pp.732-748. ⟨10.1097/ALN.0000000000004168⟩
Article dans une revueAbstractBACKGROUND: Despite expanding use, knowledge on extracorporeal membrane oxygenation support during the COVID-19 pandemic remains limited. The objective was to report characteristics, management, and outcomes of patients receiving extracorporeal membrane oxygenation with a diagnosis of COVID-19 in France and to identify pre-extracorporeal membrane oxygenation factors associated with in-hospital mortality. A hypothesis of similar mortality rates and risk factors for COVID-19 and non-COVID-19 patients on venovenous extracorporeal membrane oxygenation was made. METHODS: The Extracorporeal Membrane Oxygenation for Respiratory Failure and/or Heart failure related to Severe Acute Respiratory Syndrome-Coronavirus 2 (ECMOSARS) registry included COVID-19 patients supported by extracorporeal membrane oxygenation in France. This study analyzed patients included in this registry up to October 25, 2020, and supported by venovenous extracorporeal membrane oxygenation for respiratory failure with a minimum follow-up of 28 days after cannulation. The primary outcome was in-hospital mortality. Risk factors for in-hospital mortality were analyzed. RESULTS: Among 494 extracorporeal membrane oxygenation patients included in the registry, 429 were initially supported by venovenous extracorporeal membrane oxygenation and followed for at least 28 days. The median (interquartile range) age was 54 yr (46 to 60 yr), and 338 of 429 (79%) were men. Management before extracorporeal membrane oxygenation cannulation included prone positioning for 411 of 429 (96%), neuromuscular blockage for 419 of 427 (98%), and NO for 161 of 401 (40%). A total of 192 of 429 (45%) patients were cannulated by a mobile extracorporeal membrane oxygenation unit. In-hospital mortality was 219 of 429 (51%), with a median follow-up of 49 days (33 to 70 days). Among pre-extracorporeal membrane oxygenation modifiable exposure variables, neuromuscular blockage use (hazard ratio, 0.286; 95% CI, 0.101 to 0.81) and duration of ventilation (more than 7 days compared to less than 2 days; hazard ratio, 1.74; 95% CI, 1.07 to 2.83) were independently associated with in-hospital mortality. Both age (per 10-yr increase; hazard ratio, 1.27; 95% CI, 1.07 to 1.50) and total bilirubin at cannulation (6.0 mg/dl or more compared to less than 1.2 mg/dl; hazard ratio, 2.65; 95% CI, 1.09 to 6.5) were confounders significantly associated with in-hospital mortality. CONCLUSIONS: In-hospital mortality was higher than recently reported, but nearly half of the patients survived. A high proportion of patients were cannulated by a mobile extracorporeal membrane oxygenation unit. Several factors associated with mortality were identified. Venovenous extracorporeal membrane oxygenation support should be considered early within the first week of mechanical ventilation initiation.
Analysis of a Pure Magnesium Membrane Degradation Process and Its Functionality When Used in a Guided Bone Regeneration Model in Beagle Dogs
Patrick Rider, Željka Perić Kačarević, Akiva Elad, Daniel Rothamel, Gerrit Sauer, Fabien Bornert, Peter Windisch, Dávid Hangyási, Balint Molnar, Bernhard Hesse, Frank Witte
Materials, 2022, 15 (9), pp.3106. ⟨10.3390/ma15093106⟩
Article dans une revueAbstractFor the surgical technique of guided bone regeneration (GBR), the choice of available barrier membranes has until recently not included an option that is mechanically strong, durable, synthetic and resorbable. The most commonly used resorbable membranes are made from collagen, which are restricted in their mechanical strength. The purpose of this study is to evaluate the degradation and regeneration potential of a magnesium membrane compared to a collagen membrane. In eighteen beagle dogs, experimental bone defects were filled with bovine xenograft and covered with either a magnesium membrane or collagen membrane. The health status of the animals was regularly monitored and recorded. Following sacrifice, the hemimandibles were prepared for micro-CT (µ-CT) analysis. Complications during healing were observed in both groups, but ultimately, the regenerative outcome was similar between groups. The µ-CT parameters showed comparable results in both groups in terms of new bone formation at all four time points. In addition, the µ-CT analysis showed that the greatest degradation of the magnesium membranes occurred between 1 and 8 weeks and continued until week 16. The proportion of new bone within the defect site was similar for both treatment groups, indicating the potential for the magnesium membrane to be used as a viable alternative to collagen membranes. Overall, the new magnesium membrane is a functional and safe membrane for the treatment of defects according to the principles of GBR.
Therapeutic inertia in the pharmacological management of heart failure with reduced ejection fraction
Nicolas Girerd, Jean-Jacques von Hunolstein, Pierpaolo Pellicori, Antoni Bayés-Genís, Tiny Jaarsma, Lars Lund, Pascal Bilbault, Jean-Marc Boivin, Tahar Chouihed, Jérôme Costa, Jean-Christophe Eicher, Estelle Fall, David Kenizou, Bruno Maillier, Pierre Nazeyrollas, Gérald Roul, Noura Zannad, Patrick Rossignol, Marie-France Seronde
ESC Heart Failure, 2022, ⟨10.1002/ehf2.13929⟩
Article dans une revueStudy of the spontaneous nano-emulsification process with different octadecyl succinic anhydride derivatives
Xinyue Wang, Mayeul Collot, Thierry Vandamme, Nicolas Anton
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2022, 645, ⟨10.1016/j.colsurfa.2022.128858⟩
Article dans une revueAbstractThree new amphiphilic molecules were synthetized on a basis of a common monomer, octadecyl succinic anhydride (OSA), on which were grafted different PEGylated hydrophilic polar head. The objective of this study is to investigate a potential relationship between the chemical structure of the surfactant, and the efficiency to generate nano-emulsions through the spontaneous nano-emulsification method. Beyond the innovative synthesis and comparison of these amphiphiles, a comprehensive comparison is suggested, comparing size distribution and polydispersity for the different composition parameters, as well making a bridge with critical micelle concentration and hydrophile lipophile balance (HLB). Using OSA monomeric entity as common hydrophobic moiety, the variations in the surfactant molecules were done on the hydrophilic moiety, through the addition of one or two Jeffamine chains in different configurations, so-called C18⊖-PEG, C18-PEG and C18-PEG2. The results disclosed that C18⊖-PEG allows producing smallest size distribution and lowest PDI values. Moreover, C18⊖-PEG presents the highest critical micellar concentration, linked to a higher hydrophilicity of the molecule. This impacts the balance between surfactant affinity for oil and aqueous phases, a point probably related to the spontaneous emulsification efficiency. A last part of the study regarded the optimization of the emulsification efficiency, through a systematic study in ternary composition map, to disclosed that the best conditions are included in the lower surfactant concentrations, for water and oil contents higher and lower than 50%, respectively. The main idea behind this study was to bring further insights into the unclear relationship between the chemical structure of nonionic surfactants, and the efficiency of the emulsification by spontaneous low-energy method.
Association between root taper and root proximity of single-rooted teeth with periodontitis: a cone-beam computed tomography based study
Hayriye Özçelik, Olivier Huck, Gokce Aykol-Sahin, Belde Arsan, Serpil Melek Altan-Koran, Ulku Baser
Odontology, 2022, 110 (2), pp.356-364. ⟨10.1007/s10266-021-00665-6⟩
Article dans une revueAbstractThis study aimed to determine the association between the root taper and proximity of single-rooted teeth with periodontitis using cone-beam computed tomography (CBCT). CBCT images of 362 single-rooted teeth from 37 patients were evaluated. This case–control study analyzed 17 participants with stage II and III periodontitis, (n = 161 teeth, periodontitis group) and 20 participants with healthy periodontium (n = 201 teeth, control group). Multiplanar reconstructions were used for proximity measurements, and cross-sectional images for calculating the angle of the root tapers. Root proximity, root length, and root taper were measured. Multivariate binary logistic regression analysis was used to determine association with periodontitis. In the periodontitis group, the upper lateral root-taper was 18.33° ± 3.25° and was significantly higher when compared to the control group (p = 0.001). The root taper of the lateral incisor was associated with the diagnosis of periodontitis (p = 0.01) with an odds ratio of 1.541 according to regression analysis. Root length was also identified as a potential protective parameter. The risk of being diagnosed with periodontitis decreases when root length increases by 0.785 times (p = 0.043). Upper canines in the periodontitis group presented shorter root lengths (p = 0.039) and higher root tapers (p = 0.01). Also, mandibular canines were closer form adjacent teeth in the periodontitis group (p = 0.042). This study indicated that short-root and increased root-taper at specific teeth could be considered as risk indicators for periodontitis.
Intake of coated EPA:DHA 6:1 nanoparticles improves age-related endothelial dysfunction by restoring the endothelial formation of NO and improving oxidative stress: Role of the local angiotensin system
Lamia Remila, Nazende Guenday-Tuereli, Ursula Houngue, Eugenia Belcastro, Christophe Bruckert, Thierry Vandamme, Emre Tuereli, Paul Kerth, Cyril Auger, Valérie Schini-Kerth
Journal of Functional Foods, 2022, 91, pp.105003. ⟨10.1016/j.jff.2022.105003⟩
Article dans une revueOutcome of Patients with Early Repolarization Pattern and Syncope
Tsukasa Kamakura, Jean-Baptiste Gourraud, Nicolas Clementy, Philippe Maury, Jacques Mansourati, Didier Klug, Antoine da Costa, Jean Luc Pasquié, Philippe Mabo, Pascal Chavernac, Gabriel Laurent, Pascal Defaye, Julien Laborderie, Antoine Leenhardt, Nicolas Sadoul, Jean-Claude Deharo, Cédric Giraudeau, Anne Quentin, Laurence Jesel, Aurelie Thollet, Romain Tixier, Nicolas Derval, Michel Haissaguerre, Vincent Probst, Frederic Sacher
Heart Rhythm, 2022, ⟨10.1016/j.hrthm.2022.03.1233⟩
Article dans une revueAbstractBackground Syncope in patients with an early repolarization (ER) pattern presents a challenge for clinicians as it has been identified as an indicator of a higher risk of life-threatening ventricular arrhythmias (VAs). Objectives This study aimed to analyze the outcome of patients with an ER pattern and syncope and to evaluate the factors predictive of VAs. Methods Over a period of 5 years, we enrolled 143 patients with an ER pattern and syncope in a multicenter prospective registry. Results After the initial examinations, 97 patients (67.8%) were implanted with a device allowing electrocardiogram monitoring, including 84 (58.7%) with an implantable loop recorder. During a mean follow-up period of 68 ± 34 months, we documented 16 arrhythmias presumably responsible for syncope (5 VAs, 10 bradycardias, and 1 supraventricular tachycardia). Additionally, recurrent syncope not associated with electrocardiogram documentation occurred in 16 patients (11.2%). The cause of syncope was identified in 23 of 97 patients with a monitoring device (23.8%). The 5-year incidence of VAs and arrhythmic events presumably responsible for syncope was 4.9% and 11.0%, respectively. Patients who developed VAs showed no prodromes or specific triggers at the time of syncope. Neither the presence of a family history of sudden cardiac death nor the previously reported high-risk electrocardiographic parameters differed between patients with and without VAs. Conclusion VAs occurred in 4.9% of patients with an ER pattern and syncope. Device implantation based on detailed history taking seems to be a reasonable strategy. Previously reported high-risk electrocardiographic patterns did not identify patients with VAs.
Carissa edulis phytochemical and pharmacological studies: A Review Article
Ursula Mawulé Houngue, Jean-Marie Tokoudagba, Fernand A.Gbaguidi, Valérie Schini-Kerth
International Journal of Science Academic Research, 2022, 3 (4), pp.3701-3706
Article dans une revueAbstractBackground: Carissa edulis is a plant of Apocynaceae family that is used in many countries of Africa, Asia, and Oceania. The plant has been employed and used in traditional medicine for various ailments. The diversified utilizations, widely acclaimed and proven efficacy of preparations of C. edulis in traditional medicine have led researchers to take an interest in phytochemical and pharmacological properties of this plant. Objective: The purpose of this review isto provide updated information about therapeutic effects of C. edulis and improve our future experimental and clinical research plan. Methods: This review covers articles between 1975 and 2020. The available information was collected via electronic search (Pubmed, SciFinder, Google Scholar, ResearchGate) and a library search for articles published in peer-reviewed journals, using ‘‘Carissa edulis’’ as search term (‘‘all fields’’) and with no specific time frame set for search. No restrictions regarding the language of publication were imposed. Results: Studies have shown that extracts of C. edulis may contain biologically active principles with diuretic, analgesic, antimicrobial, antidiabetic and anticancer effects. It’s a plant with many properties that is rich in flavonoids, phenolic compounds, chlorogenic acid derivatives, lignans, sesquiterpene, sterols, triterpenes, coumarins, cardiac glycosides and miscellaneous compounds. Though short term used of the plant doesn’t have any toxic effect, its long term used can alter hepatic, renal and haematopoietic functions of the organism. Conclusion: Although the mechanisms of action are not very clear, there is enough evidence of C. edulis efficacy in the treatment of many diseases. However, it’s necessary to do more well-designed animal and randomized clinical studies with sufficient sample sizes, to collect more objective data and confirm traditional effects of this plant. Exploring other fields of research such as the effect of the plant on cardiovascular disease would also be interesting.
Impact of moderate dietary protein restriction on glucose homeostasis in a model of estrogen deficiency
Carole Fournier, Leonidas G. Karagounis, Sandra M. Sacco, Marie-Noelle Horcajada, Thomas Decaens, Elizabeth A Offord, Karim Bouzakri, Patrick Ammann
Journal of Nutritional Biochemistry, 2022, 102, pp.108952. ⟨10.1016/j.jnutbio.2022.108952⟩
Article dans une revueEarly prone positioning in acute respiratory distress syndrome related to COVID-19: a propensity score analysis from the multicentric cohort COVID-ICU network—the ProneCOVID study
Christophe Le Terrier, Florian Sigaud, Said Lebbah, Luc Desmedt, David Hajage, Claude Guérin, Jérôme Pugin, Steve Primmaz, Nicolas Terzi, Alain Mercat, Pierre Asfar, François Beloncle, Julien Demiselle, Tài Pham, Arthur Pavot, Xavier Monnet, Christian Richard, Alexandre Demoule, Martin Dres, Julien Mayaux, Alexandra Beurton, Cédric Daubin, Richard Descamps, Aurélie Joret, Damien Du Cheyron, Frédéric Pene, Jean-Daniel Chiche, Mathieu Jozwiak, Paul Jaubert, Guillaume Voiriot, Muriel Fartoukh, Marion Teulier, Clarisse Blayau, Erwen L’her, Cécile Aubron, Laetitia Bodenes, Nicolas Ferriere, Johann Auchabie, Anthony Le Meur, Sylvain Pignal, Thierry Mazzoni, Jean-Pierre Quenot, Pascal Andreu, Jean-Baptiste Roudau, Marie Labruyère, Saad Nseir, Sébastien Preau, Julien Poissy, Daniel Mathieu, Sarah Benhamida, Rémi Paulet, Nicolas Roucaud, Martial Thyrault, Florence Daviet, Sami Hraiech, Gabriel Parzy, Aude Sylvestre, Sébastien Jochmans, Anne-Laure Bouilland, Mehran Monchi, Marc Danguy Des Déserts, Quentin Mathais, Gwendoline Rager, Pierre Pasquier, Reignier Jean, Seguin Amélie, Garret Charlotte, Canet Emmanuel, Jean Dellamonica, Clément Saccheri, Romain Lombardi, Yanis Kouchit, Sophie Jacquier, Armelle Mathonnet, Mai-Ahn Nay, Isabelle Runge, Frédéric Martino, Laure Flurin, Amélie Rolle, Michel Carles, Rémi Coudroy, Arnaud Thille, Jean-Pierre Frat, Maeva Rodriguez, Pascal Beuret, Audrey Tientcheu, Arthur Vincent, Florian Michelin, Fabienne Tamion, Dorothée Carpentier, Déborah Boyer, Christophe Girault, Valérie Gissot, Stéphan Ehrmann, Charlotte Salmon Gandonniere, Djlali Elaroussi, Agathe Delbove, Yannick Fedun, Julien Huntzinger, Eddy Lebas, Grâce Kisoka, Céline Grégoire, Stella Marchetta, Bernard Lambermont, Laurent Argaud, Thomas Baudry, Pierre-Jean Bertrand, Auguste Dargent, Christophe Guitton, Nicolas Chudeau, Mickaël Landais, Cédric Darreau, Alexis Ferre, Antoine Gros, Guillaume Lacave, Fabrice Bruneel, Mathilde Neuville, Jérôme Devaquet, Guillaume Tachon, Richard Gallot, Riad Chelha, Arnaud Galbois, Anne Jallot, Ludivine Chalumeau Lemoine, Khaldoun Kuteifan, Valentin Pointurier, Louise-Marie Jandeaux, Joy Mootien, Charles Damoisel, Benjamin Sztrymf, Matthieu Schmidt, Alain Combes, Juliette Chommeloux, Charles Edouard Luyt, Frédérique Schortgen, Leon Rusel, Camille Jung, Florent Gobert, Damien Vimpere, Lionel Lamhaut, Bertrand Sauneuf, Liliane Charrrier, Julien Calus, Isabelle Desmeules, Benoît Painvin, Jean-Marc Tadie, Vincent Castelain, Baptiste Michard, Jean-Etienne Herbrecht, Mathieu Baldacini, Nicolas Weiss, Sophie Demeret, Clémence Marois, Benjamin Rohaut, Pierre-Henri Moury, Anne-Charlotte Savida, Emmanuel Couadau, Mathieu Série, Nica Alexandru, Cédric Bruel, Candice Fontaine, Sonia Garrigou, Juliette Courtiade Mahler, Maxime Leclerc, Michel Ramakers, Pierre Garçon, Nicole Massou, Ly van Vong, Juliane Sen, Nolwenn Lucas, Franck Chemouni, Annabelle Stoclin, Alexandre Avenel, Henri Faure, Angélie Gentilhomme, Sylvie Ricome, Paul Abraham, Céline Monard, Julien Textoris, Thomas Rimmele, Florent Montini, Gabriel Lejour, Thierry Lazard, Isabelle Etienney, Younes Kerroumi, Claire Dupuis, Marine Bereiziat, Elisabeth Coupez, François Thouy, Clément Hoffmann, Nicolas Donat, Anne Chrisment, Rose-Marie Blot, Antoine Kimmoun, Audrey Jacquot, Matthieu Mattei, Bruno Levy, Ramin Ravan, Loïc Dopeux, Jean-Mathias Liteaudon, Delphine Roux, Brice Rey, Radu Anghel, Deborah Schenesse, Vincent Gevrey, Jermy Castanera, Philippe Petua, Benjamin Madeux, Otto Hartman, Michael Piagnerelli, Anne Joosten, Cinderella Noel, Patrick Biston, Thibaut Noel, Gurvan Bouar, Messabi Boukhanza, Elsa Demarest, Marie-France Bajolet, Nathanaël Charrier, Audrey Quenet, Cécile Zylberfajn, Nicolas Dufour, Buno Mégarbane, Sqébastian Voicu, Nicolas Deye, Isabelle Malissin, François Legay, Matthieu Debarre, Nicolas Barbarot, Pierre Fillatre, Bertrand Delord, Thomas Laterrade, Tahar Saghi, Wilfried Pujol, Pierre Julien Cungi, Pierre Esnault, Mickael Cardinale, Vivien Hong Tuan Ha, Grégory Fleury, Marie-Ange Brou, Daniel Zafimahazo, David Tran-Van, Patrick Avargues, Lisa Carenco, Nicolas Robin, Alexandre Ouali, Lucie Houdou, Christophe Le Terrier, Noémie Suh, Steve Primmaz, Jérôme Pugin, Emmanuel Weiss, Tobias Gauss, Jean-Denis Moyer, Catherine Paugam Burtz, Béatrice La Combe, Rolland Smonig, Jade Violleau, Pauline Cailliez, Jonathan Chelly, Antoine Marchalot, Cécile Saladin, Christelle Bigot, Pierre-Marie Fayolle, Jules Fatséas, Amr Ibrahim, Dabor Resiere, Rabih Hage, Clémentine Cholet, Marie Cantier, Pierre Trouiler, Philippe Montravers, Brice Lortat-Jacob, Sebastien Tanaka, Alexy Tran Dinh, Jacques Duranteau, Anatole Harrois, Guillaume Dubreuil, Marie Werner, Anne Godier, Sophie Hamada, Diane Zlotnik, Hélène Nougue, Armand Mekontso-Dessap, Guillaume Carteaux, Keyvan Razazi, Nicolas de Prost, Nicolas Mongardon, Olivier Langeron, Eric Levesque, Arié Attias, Charles de Roquetaillade, Benjamin Chousterman, Alexandre Mebazaa, Etienne Gayat, Marc Garnier, Emmanuel Pardo, Lea Satre-Buisson, Christophe Gutton, Elise Yvin, Clémence Marcault, Elie Azoulay, Michael Darmon, Hafid Ait Oufella, Geoffroy Hariri, Tomas Urbina, Sandie Mazerand, Nicholas Heming, Francesca Santi, Pierre Moine, Djillali Annane, Adrien Bouglé, Edris Omar, Aymeric Lancelot, Emmanuelle Begot, Gaétan Plantefeve, Damien Contou, Hervé Mentec, Olivier Pajot, Stanislas Faguer, Olivier Cointault, Laurence Lavayssiere, Marie-Béatrice Nogier, Matthieu Jamme, Claire Pichereau, Jan Hayon, Hervé Outin, François Dépret, Maxime Coutrot, Maité Chaussard, Lucie Guillemet, Pierre Goffin, Romain Thouny, Julien Guntz, Laurent Jadot, Romain Persichini, Vanessa Jean-Michel, Hugues Georges, Thomas Caulier, Gaël Pradel, Marie-Hélène Hausermann, Thi My Hue Nguyen-Valat, Michel Boudinaud, Emmanuel Vivier, Sylvène Rosseli, Gaël Bourdin, Christian Pommier, Marc Vinclair, Simon Poignant, Sandrine Mons, Wulfran Bougouin, Franklin Bruna, Quentin Maestraggi, Christian Roth, Laurent Bitker, François Dhelft, Justine Bonnet-Chateau, Mathilde Filippelli, Tristan Morichau-Beauchant, Stéphane Thierry, Charlotte Le Roy, Mélanie Saint Jouan, Bruno Goncalves, Aurélien Mazeraud, Matthieu Daniel, Tarek Sharshar, Cyril Cadoz, Rostane Gaci, Sébastien Gette, Guillaune Louis, Sophe-Caroline Sacleux, Marie-Amélie Ordan, Aurélie Cravoisy, Marie Conrad, Guilhem Courte, Sébastien Gibot, Younès Benzidi, Claudia Casella, Laurent Serpin, Jean-Lou Setti, Marie-Catherine Besse, Anna Bourreau, Jérôme Pillot, Caroline Rivera, Camille Vinclair, Marie-Aline Robaux, Chloé Achino, Marie-Charlotte Delignette, Tessa Mazard, Frédéric Aubrun, Bruno Bouchet, Aurélien Frérou, Laura Muller, Charlotte Quentin, Samuel Degoul, Xavier Stihle, Claude Sumian, Nicoletta Bergero, Bernard Lanaspre, Hervé Quintard, Eve Marie Maiziere, Pierre-Yves Egreteau, Guillaume Leloup, Florin Berteau, Marjolaine Cottrel, Marie Bouteloup, Matthieu Jeannot, Quentin Blanc, Julien Saison, Isabelle Geneau, Romaric Grenot, Abdel Ouchike, Pascal Hazera, Anne-Lyse Masse, Suela Demiri, Corinne Vezinet, Elodie Baron, Deborah Benchetrit, Antoine Monsel, Grégoire Trebbia, Emmanuelle Schaack, Raphaël Lepecq, Mathieu Bobet, Christophe Vinsonneau, Thibault Dekeyser, Quentin Delforge, Imen Rahmani, Bérengère Vivet, Jonathan Paillot, Lucie Hierle, Claire Chaignat, Sarah Valette, Benoït Her, Jennifier Brunet, Mathieu Page, Fabienne Boiste, Anthony Collin, Florent Bavozet, Aude Garin, Mohamed Dlala, Kais Mhamdi, Bassem Beilouny, Alexandra Lavalard, Severine Perez, Benoit Veber, Pierre-Gildas Guitard, Philippe Gouin, Anna Lamacz, Fabienne Plouvier, Bertrand Delaborde, Aïssa Kherchache, Amina Chaalal, Jean-Damien Ricard, Marc Amouretti, Santiago Freita-Ramos, Damien Roux, Jean-Michel Constantin, Mona Assefi, Marine Lecore, Agathe Selves, Florian Prevost, Christian Lamer, Ruiying Shi, Lyes Knani, Sébastien Pili Floury, Lucie Vettoretti, Michael Levy, Lucile Marsac, Stéphane Dauger, Sophie Guilmin-Crépon, Hadrien Winiszewski, Gael Piton, Thibaud Soumagne, Gilles Capellier, Jean-Baptiste Putegnat, Frédérique Bayle, Maya Perrou, Ghyslaine Thao, Guillaume Géri, Cyril Charron, Xavier Repessé, Antoine Vieillard-Baron, Mathieu Guilbart, Pierre-Alexandre Roger, Sébastien Hinard, Pierre-Yves Macq, Kevin Chaulier, Sylvie Goutte, Patrick Chillet, Anaïs Pitta, Barbara Darjent, Amandine Bruneau, Sigismond Lasocki, Maxime Leger, Soizic Gergaud, Pierre Lemarie, Nicolas Terzi, Carole Schwebel, Anaïs Dartevel, Louis-Marie Galerneau, Jean-Luc Diehl, Caroline Hauw-Berlemont, Nicolas Péron, Emmanuel Guérot, Abolfazl Mohebbi Amoli, Michel Benhamou, Jean-Pierre Deyme, Olivier Andremont, Diane Lena, Julien Cady, Arnaud Causeret, Arnaud de la Chapelle, Christophe Cracco, Stéphane Rouleau, David Schnell, Camille Foucault, Cécile Lory, Thibault Chapelle, Vincent Bruckert, Julie Garcia, Abdlazize Sahraoui, Nathalie Abbosh, Caroline Bornstain, Pierre Pernet, Florent Poirson, Ahmed Pasem, Philippe Karoubi, Virginie Poupinel, Caroline Gauthier, François Bouniol, Philippe Feuchere, Florent Bavozet, Anne Heron, Serge Carreira, Malo Emery, Anne Sophie Le Floch, Luana Giovannangeli, Nicolas Herzog, Christophe Giacardi, Thibaut Baudic, Chloé Thill, Said Lebbah, Jessica Palmyre, Florence Tubach, David Hajage, Nicolas Bonnet, Nathan Ebstein, Stéphane Gaudry, Yves Cohen, Julie Noublanche, Olivier Lesieur, Arnaud Sément, Isabel Roca-Cerezo, Michel Pascal, Nesrine Sma, Gwenhaël Colin, Jean-Claude Lacherade, Gauthier Bionz, Natacha Maquigneau, Pierre Bouzat, Michel Durand, Marie-Christine Hérault, Jean-Francois Payen
Critical Care, 2022, 26 (1), pp.71. ⟨10.1186/s13054-022-03949-7⟩
Article dans une revueAbstract<b>Background: </b>Delaying time to prone positioning (PP) may be associated with higher mortality in acute respiratory distress syndrome (ARDS) due to coronavirus disease 2019 (COVID-19). We evaluated the use and the impact of early PP on clinical outcomes in intubated patients hospitalized in intensive care units (ICUs) for COVID-19. <b>Methods: </b>All intubated patients with ARDS due to COVID-19 were involved in a secondary analysis from a prospective multicenter cohort study of COVID-ICU network including 149 ICUs across France, Belgium and Switzerland. Patients were followed-up until Day-90. The primary outcome was survival at Day-60. Analysis used a Cox proportional hazard model including a propensity score. <b>Results:</b> Among 2137 intubated patients, 1504 (70.4%) were placed in PP during their ICU stay and 491 (23%) during the first 24 h following ICU admission. One hundred and eighty-one patients (36.9%) of the early PP group had a PaO2/FiO2 ratio > 150 mmHg when prone positioning was initiated. Among non-early PP group patients, 1013 (47.4%) patients had finally been placed in PP within a median delay of 3 days after ICU admission. Day-60 mortality in non-early PP group was 34.2% versus 39.3% in the early PP group (p = 0.038). Day-28 and Day-90 mortality as well as the need for adjunctive therapies was more important in patients with early PP. After propensity score adjustment, no significant difference in survival at Day-60 was found between the two study groups (HR 1.34 [0.96-1.68], p = 0.09 and HR 1.19 [0.998-1.412], p = 0.053 in complete case analysis or in multiple imputation analysis, respectively). <b>Conclusions:</b> In a large multicentric international cohort of intubated ICU patients with ARDS due to COVID-19, PP has been used frequently as a main treatment. In this study, our data failed to show a survival benefit associated with early PP started within 24 h after ICU admission compared to PP after day-1 for all COVID-19 patients requiring invasive mechanical ventilation regardless of their severity.
Lymphopenia and Early Variation of Lymphocytes to Predict In-Hospital Mortality and Severity in ED Patients with SARS-CoV-2 Infection
Maxence Simon, Pierrick Le Borgne, François Lefevbre, Sylvie Chabrier, Lauriane Cipolat, Aline Remillon, Florent Baicry, Pascal Bilbault, Charles-Eric Lavoignet, Laure Abensur Vuillaume
Journal of Clinical Medicine, 2022, 11 (7), pp.1803. ⟨10.3390/jcm11071803⟩
Article dans une revueAbstract(1) Introduction: Multiple studies have demonstrated that lymphocyte count monitoring is a valuable prognostic tool for clinicians during inflammation. The aim of our study was to determine the prognostic value of delta lymphocyte H24 from admission from the emergency department for mortality and severity of SARS-CoV-2 infection. (2) Methods: We have made a retrospective and multicentric study in six major hospitals of northeastern France. The patients were hospitalized and had a confirmed diagnosis of SARS-CoV-2 infection. (3): Results: A total of 1035 patients were included in this study. Factors associated with infection severity were CRP > 100 mg/L (OR: 2.51, CI 95%: (1.40–3.71), p < 0.001) and lymphopenia < 800/mm3 (OR: 2.15, CI 95%: (1.42–3.27), p < 0.001). In multivariate analysis, delta lymphocytes H24 (i.e., the difference between lymphocytes values at H24 and upon admission to the ED) < 135 was one of the most significant biochemical factors associated with mortality (OR: 2.23, CI 95%: (1.23–4.05), p = 0.009). The most accurate threshold for delta lymphocytes H24 was 75 to predict severity and 135 for mortality. (4) Conclusion: Delta lymphocytes H24 could be a helpful early screening prognostic biomarker to predict severity and mortality associated with COVID-19.
Hydrophobization of hydrophilic alginate/chitosan PEC surfaces
Guillaume Conzatti, Farouk Ayadi, Sandrine Cavalie, Marion Castel, Audrey Tourrette
Journal of Applied Polymer Science, 2022, 139 (12), pp.51829. ⟨10.1002/app.51829⟩
Article dans une revueAbstractAlginate and chitosan are biocompatible polysaccharides that are often combined as polyelectrolyte complexes (PECs) for the development of biomaterials. These PECs are interesting as wound dressings, among other uses. The properties of such devices depend on their surface characteristics, however. Herein we propose a method to hydrophobize highly hydrophilic alginate/chitosan PECs by initial chemical grafting of polycaprolactone (PCL) or polylactic acid, using hexane diamine or ethylenediamine as linkers, followed by a drop casting covering step. This resulted in increased adhesion between the hydrophobic layer and the PEC, when compared to direct casting. The materials obtained were evaluated as potential biomaterials by analyzing the hydrophilic properties of their surface, swelling, enzymatic degradation, and impermeability. The results revealed that hydrophobization was effective but decreased the swelling abilities of PECs, which still remained interesting (~1000%) for wound dressing applications. However, the PCL layer was not resistant to the enzymatic environment, while PLA showed impermeabilization of the PECs.
Efficacy of N‐acetyl aspartyl glutamic acid versus fluorometholone for treating allergic conjunctivitis in an environmental exposure chamber
Frederic de Blay de Gaix, Alina Gherasim, Nathalie Domis, Ibrahim Choual, Tristan Bourcier
Clinical and Experimental Allergy, 2022, 52 (9), pp.1091-1100. ⟨10.1111/cea.14130⟩
Article dans une revueImmune-Desert Tumor Microenvironment in Thoracic SMARCA4-Deficient Undifferentiated Tumors with Limited Efficacy of Immune Checkpoint Inhibitors
Justine Gantzer, Guillaume Davidson, Bujamin Vokshi, Noëlle Weingertner, Antoine Bougoüin, Marco Moreira, Véronique Lindner, Guillaume Lacroix, Céline Mascaux, Marie-Pierre Chenard, F. Bertucci, Irwin Davidson, Jean-Emmanuel Kurtz, Catherine Sautès-Fridman, Wolf Fridman, Gabriel Malouf
Oncologist, 2022, ⟨10.1093/oncolo/oyac040⟩
Article dans une revueAbstractThoracic SMARCA4-deficient undifferentiated tumors (SMARCA4-UT) are aggressive neoplasms. Data linking BAF alterations with tumor microenvironment (TME) and efficacy of immune checkpoint inhibitors (ICI) are contradictory. The TME of SMARCA4-UT and their response to ICI are unknown. Materials and Methods Patients diagnosed with SMARCA4-UT in our institution were included. Immunostainings for tertiary lymphoid structures (TLS), immune cell markers, and checkpoints were assessed. Validation was performed using an independent transcriptome dataset including SMARCA4-UT, non–small cell lung cancers (NSCLC) with/without SMARCA4 mutations, and unclassified thoracic sarcomas (UTS). CXCL9 and PD-L1 expressions were assessed in NSCLC and thoracic fibroblast cell lines, with/without SMARCA4 knockdown, treated with/without interferon gamma. Results Nine patients were identified. All samples but one showed no TLS, consistent with an immune desert TME phenotype. Four patients received ICI as part of their treatment, but the only one who responded, had a tumor with a TLS and immune-rich TME. Unsupervised clustering of the validation cohort using immune cell scores identified 2 clusters associated with cell ontogeny and immunity (cluster 1 enriched for NSCLC independently of SMARCA4 status (n = 9/10; P = .001); cluster 2 enriched for SMARCA4-UT (n = 11/12; P = .005) and UTS (n = 5/5; P = .0005). SMARCA4 loss-of-function experiments revealed interferon-induced upregulation of CXCL9 and PD-L1 expression in the NSCLC cell line with no effect on the thoracic fibroblast cell line. Conclusion SMARCA4-UT mainly have an immune desert TME with limited efficacy to ICI. TME of SMARCA4-driven tumors varies according to the cell of origin questioning the interplay between BAF alterations, cell ontogeny and immunity.
Lenabasum Reduces Porphyromonas gingivalis–Driven Inflammation
Fareeha Batool, Pierre-Yves Gegout, Céline Stutz, Barbara White, Andrew Kolodziej, Nadia Benkirane-Jessel, Catherine Petit, Olivier Huck
Inflammation, 2022, 45 (4), pp.1752-1764. ⟨10.1007/s10753-022-01658-5⟩
Article dans une revueComparison of Continuous Glucose Monitoring in Cystic Fibrosis Patients With or Without Pancreatic Exocrine Insufficiency
Luc Rakotoarisoa, Laurence Weiss, François Lefebvre, Michele Porzio, Bruno Ravoninjatovo, Michel Abely, Isabelle Danner Boucher, Séverine Dubois, Françoise Troussier, Rault Gilles, Anne Prevotat, Laurence Kessler
Hormone and Metabolic Research, 2022, ⟨10.1055/a-1794-5496⟩
Article dans une revueAbstractAbstract This study aimed to compare continuous glucose monitoring (CGM) in cystic fibrosis (CF) according to pancreatic exocrine status. CGM and oral glucose tolerance testing (OGTT) were realized annually over five years in people with CF (pwCF) aged≥10 years without cystic fibrosis-related diabetes (CFRD). CGM parameters in patients with normal glucose tolerance (NGT), impaired glucose tolerance (IGT), and newly diagnosed CFRD were compared according to presence of pancreatic sufficiency (PS) or insufficiency (PI). Overall, 547 OGTTs and 501 CGMs were performed in 147 CF patients, comprising 122 PI and 25 PS. In PS patients, 84% displayed NGT, 12% IGT, and 4% CFRD vs. 58%, 32%, and 10% (p=0.05) in PI. Among participants displaying normal OGTT, time in glucose range (70–140 mg/dl) was significantly increased, 97% (93, 99) vs. 92% (85, 96), p<0.001, and time above glucose range > 140 mg/dl significantly decreased, 1% (0, 2) % vs. 6% (2, 13), in patients with PS compared to those with PI. No significant differences were highlighted in patients with IGT. CGM revealed significant different glucose tolerance abnormalities in PI versus PS, which were undetected by standard 2-hour OGTT glucose.
Does baseline quality of life predict the occurrence of complications in resectable esophageal cancer?
W.G. Sheng, Emerline Assogba, O. Billa, Bernard Meunier, J. Gagnière, D. Collet, X.B. d'Journo, Cécile Brigand, G. Piessen, T.S. Dabakuyo-Yonli
Surgical Oncology, 2022, 40, pp.101707. ⟨10.1016/j.suronc.2021.101707⟩
Article dans une revueAbstractBackground: The aim of this study was to assess the impact of baseline health related quality of life (HRQOL) on the occurrence of postoperative complications and death in patients with resectable esophageal cancer. Methods: Existing data from a prospective, multicenter, open label, randomized, controlled phase III trial comparing hybrid versus open esophagectomy in patients with resectable esophageal cancer from 2009 to 2012 in France were used. A Cox regression model was used to assess the prognostic value of the baseline HRQOL score on the occurrence of major complications (MC), and major pulmonary complications (MPC) at 30 days post-surgery, as well as on 1-year postoperative overall survival (OS). Results: Every 10-point increase in the baseline role functioning score was associated with a 14% reduction in the risk of MC, while every 10-point increase in fatigue or pain score was associated with an 18% increase in the risk of MC. Similarly, higher scores on fatigue and pain were associated with a higher risk of MPC. Compared with the hybrid procedure, patients undergoing open esophagectomy had a significantly higher risk of MC and MPC. Patients diagnosed with esophageal adenocarcinoma were at significantly lower risk of MC or MPC compared to patients with esophageal squamous cell carcinoma. Higher pain (HR = 1.23, p = 0.035) and insomnia (HR = 1.16, P = 0.031) scores were associated with increased 1-year OS. Conclusion: Fatigue, pain, insomnia, and squamous cell pathology were indicators of poor prognosis, and that the presence of these findings might possibly change the management plan towards other forms of treatment and warrant close attention. © 2021
Superior vena cava graft infection in thoracic surgery: a retrospective study of the French EPITHOR database
Laura Filaire, Olaf Mercier, Agathe Seguin-Givelet, Olivier Tiffet, Pierre Emmanuel Falcoz, Pierre Mordant, Pierre-Yves Brichon, Philippe Lacoste, Axel Aubert, Pascal Thomas, Françoise Le Pimpec-Barthes, Ioana Molnar, Magali Vidal, Marc Filaire, Géraud Galvaing
Interactive Cardiovascular and Thoracic Surgery, 2022, 34 (3), pp.378-385. ⟨10.1093/icvts/ivab337⟩
Article dans une revueAbstractAbstract OBJECTIVES To report our experience on the management of superior vena cava graft infection. METHODS Between 2001 and 2018, patients with superior vena cava synthetic graft or patch reconstruction after resection of intrathoracic tumours or benign disease were selected retrospectively from the French EPITHOR database and participating thoracic centres. Our study population includes patients with superior vena cava graft infection, defined according to the MAGIC consensus. Superior vena cava synthetic grafts in an empyema or mediastinitis were considered as infected. RESULTS Of 111 eligible patients, superior vena cava graft infection occurred in 12 (11.9%) patients with a polytetrafluoroethylene graft secondary to contiguous contamination. Management consisted of either conservative treatment with chest tube drainage and antibiotics (n = 3) or a surgical graft-sparing strategy (n = 9). Recurrence of infection appears in 6 patients. Graft removal was performed in 2 patients among the 5 reoperated patients. The operative mortality rate was 25%. CONCLUSIONS Superior vena cava graft infection may develop as a surgical site infection secondary to early mediastinitis or empyema. Graft removal is not always mandatory but should be considered in late or recurrent graft infection or in infections caused by aggressive microorganisms (virulent or multidrug resistant bacteria or fungi).
Genome-wide association analyses identify new Brugada syndrome risk loci and highlight a new mechanism of sodium channel regulation in disease susceptibility
Julien Barc, Rafik Tadros, Charlotte Glinge, David Chiang, Mariam Jouni, Floriane Simonet, Sean Jurgens, Manon Baudic, Michele Nicastro, Franck Potet, Joost Offerhaus, Roddy Walsh, Seung Hoan Choi, Arie Verkerk, Yuka Mizusawa, Soraya Anys, Damien Minois, Marine Arnaud, Josselin Duchateau, Yanushi Wijeyeratne, Alison Muir, Michael Papadakis, Silvia Castelletti, Margherita Torchio, Cristina Gil Ortuño, Javier Lacunza, Daniela Giachino, Natascia Cerrato, Raphaël Martins, Oscar Campuzano, Sonia van Dooren, Aurélie Thollet, Florence Kyndt, Andrea Mazzanti, Nicolas Clémenty, Arnaud Bisson, Anniek Corveleyn, Birgit Stallmeyer, Sven Dittmann, Johan Saenen, Antoine Noël, Shohreh Honarbakhsh, Boris Rudic, Halim Marzak, Matthew Rowe, Claire Federspiel, Sophie Le Page, Leslie Placide, Antoine Milhem, Hector Barajas-Martinez, Britt-Maria Beckmann, Ingrid Krapels, Johannes Steinfurt, Bo Gregers Winkel, Reza Jabbari, Moore Shoemaker, Bas Boukens, Doris Škorić-Milosavljević, Hennie Bikker, Federico Manevy, Peter Lichtner, Marta Ribasés, Thomas Meitinger, Martina Müller-Nurasyid, Konstantin Strauch, Annette Peters, Holger Schulz, Lars Schwettmann, Reiner Leidl, Margit Heier, Jan Veldink, Leonard van den Berg, Philip van Damme, Daniele Cusi, Chiara Lanzani, Sidwell Rigade, Eric Charpentier, Estelle Baron, Stéphanie Bonnaud, Simon Lecointe, Audrey Donnart, Hervé Le Marec, Stéphanie Chatel, Matilde Karakachoff, Stéphane Bézieau, Barry London, Jacob Tfelt-Hansen, Dan Roden, Katja Odening, Marina Cerrone, Larry Chinitz, Paul Volders, Maarten van de Berg, Gabriel Laurent, Laurence Faivre, Charles Antzelevitch, Stefan Kääb, Alain Al Arnaout, Jean-Marc Dupuis, Jean Luc Pasquié, Olivier Billon, Jason Roberts, Laurence Jesel, Martin Borggrefe, Pier Lambiase, Jacques Mansourati, Bart Loeys, Antoine Leenhardt, Pascale Guicheney, Philippe Maury, Eric Schulze-Bahr, Tomas Robyns, Jeroen Breckpot, Dominique Babuty, Silvia Priori, Carlo Napolitano, Pascal Defaye, Frédéric Anselme, Jean Philippe Darmon, François Wiart, Carlo de Asmundis, Pedro Brugada, Ramon Brugada, Elena Arbelo, Josep Brugada, Philippe Mabo, Nathalie Behar, Carla Giustetto, Maria Sabater Molina, Juan Gimeno, Can Hasdemir, Peter Schwartz, Lia Crotti, Pascal Mckeown, Sanjay Sharma, Elijah Behr, Michel Haissaguerre, Frédéric Sacher, Caroline Rooryck, Hanno Tan, Carol Remme, Pieter Postema, Mario Delmar, Patrick Ellinor, Steven Lubitz, Jean-Baptiste Gourraud, Michael Tanck, Alfred George, Calum Macrae, Paul Burridge, Christian Dina, Vincent Probst, Arthur Wilde, Jean-Jacques Schott, Richard Redon, Connie Bezzina
Nature Genetics, 2022, 54 (3), pp.232-239. ⟨10.1038/s41588-021-01007-6⟩
Article dans une revueAbstractBrugada syndrome (BrS) is a cardiac arrhythmia disorder associated with sudden death in young adults. With the exception of SCN5A, encoding the cardiac sodium channel NaV1.5, susceptibility genes remain largely unknown. Here we performed a genome-wide association meta-analysis comprising 2,820 unrelated cases with BrS and 10,001 controls, and identified 21 association signals at 12 loci (10 new). Single nucleotide polymorphism (SNP)-heritability estimates indicate a strong polygenic influence. Polygenic risk score analyses based on the 21 susceptibility variants demonstrate varying cumulative contribution of common risk alleles among different patient subgroups, as well as genetic associations with cardiac electrical traits and disorders in the general population. The predominance of cardiac transcription factor loci indicates that transcriptional regulation is a key feature of BrS pathogenesis. Furthermore, functional studies conducted on MAPRE2, encoding the microtubule plus-end binding protein EB2, point to microtubule-related trafficking effects on NaV1.5 expression as a new underlying molecular mechanism. Taken together, these findings broaden our understanding of the genetic architecture of BrS and provide new insights into its molecular underpinnings.
Symptoms of Infarction in Women: Is There a Real Difference Compared to Men? A Systematic Review of the Literature with Meta-Analysis
Martin Cardeillac, François Lefebvre, Florent Baicry, Pierrick Le Borgne, Cédric Gil-Jardiné, Lauriane Cipolat, Nicolas Peschanski, Laure Abensur Vuillaume
Journal of Clinical Medicine, 2022, 11 (5), pp.1319. ⟨10.3390/jcm11051319⟩
Article dans une revueAbstract(1) Context: The management of acute coronary syndrome (ACS) is based on a rapid diagnosis. The aim of this study was to focus on the ACS symptoms differences according to gender, in order to contribute to the improvement of knowledge regarding the clinical presentation in women. (2) Methods: We searched for relevant literature in two electronic databases, and analyzed the symptom presentation for patients with suspected ACS. Fifteen prospective studies were included, with a total sample size of 10,730. (3) Results: During a suspected ACS, women present more dyspnea, arm pain, nausea and vomiting, fatigue, palpitations and pain at the shoulder than men, with RR (95%CI) of 1.13 [1.10; 1.17], 1.30 [1.05; 1.59], 1,40 [1.26; 1.56], 1.08 [1.01; 1.16], 1.67 [1.49; 1.86], 1.78 [1.02; 3.13], respectively. They are older by (95%CI) 4.15 [2.28; 6.03] years compared to men. The results are consistent in the analysis of the ACS confirmed subgroup. (4) Conclusions: We have shown that there is a gender-based symptomatic difference and a female presentation for ACS. The "typical" or "atypical" semiology of ACS symptoms should no longer be used.
NLRP3 Is Involved in Neutrophil Mobilization in Experimental Periodontitis
Banndith Cheat, Coralie Torrens, Asmaa Foda, Brigitte Baroukh, Jeremy Sadoine, Lotfi Slimani, Véronique Witko-Sarsat, Olivier Huck, Marjolaine Gosset, Jérôme Bouchet
Frontiers in Immunology, 2022, 13, ⟨10.3389/fimmu.2022.839929⟩
Article dans une revueAbstractThe NLRP3 inflammasome is overexpressed in gingiva of periodontitis patients but its role remains unclear. In our study, we use a periodontitis mouse model of ligature, impregnated or not with Porphyromonas gingivalis , in WT or NLRP3 KO mice. After 28 days of induction, ligature alone provoked exacerbated periodontal destruction in KO mice, compared to WT mice, with an increase in activated osteoclasts. No difference was observed at 14 days, suggesting that NLRP3 is involved in regulatory pathways that limit periodontitis. In contrast, in the presence of P. gingivalis , this protective effect of NLRP3 was not observed. Overexpression of NLRP3 in connective tissue of WT mice increased the local production of mature IL−1β, together with a dramatic mobilization of neutrophils, bipartitely distributed between the site of periodontitis induction and the alveolar bone crest. P. gingivalis enhanced the targeting of NLRP3-positive neutrophils to the alveolar bone crest, suggesting a role for this subpopulation in bone loss. Conversely, in NLRP3 KO mice, mature IL-1β expression was lower and almost no neutrophils were mobilized. Our study sheds new light on the role of NLRP3 in periodontitis by highlighting the ambiguous role of neutrophils, and P. gingivalis which affects NLRP3 functions.
Investigating the effect of nanoparticle concentration and oil content on the physical stability of Pickering emulsion stabilized by chitosan nanoparticles
Fatemeh Heidari Dalfard, Aman Mohammad Ziaiifar, Seid Mahdi Jafari, Nicolas Anton
Innovative Food Technologies, 2022, 9 (2), pp.167-179. ⟨10.22104/JIFT.2021.5⟩
Article dans une revueAbstractRecently, the preparation of Pickering emulsion has attracted particular attention due to its wide range of applications in various industries, including the food and pharmaceutical industries. The present study aimed to prepare a Pickering emulsion stabilized with Chitosan nanoparticles (CSNPs) and investigate the effect of nanoparticle concentration and oil content on physical stability. First, the nanoparticles were prepared by the ionic gelation technique. Then, morphology, particle size distribution, wettability, Fourier-transform infrared (FTIR) spectra of nanoparticles were determined. FSEM results revealed that the nanoparticles are predominantly spherical, with an average size of 69 ±1nm. Also, the results of the FTIR spectrum analysis and wettability confirmed the formation of nanoparticles. In the second stage, emulsions were prepared at different concentrations of CSNPs (0.45, 0.6, and 0.75% w/v) and ratio of oil to the aqueous phase (10, 20, and 30%). The results revealed that nanoparticle concentration and oil content had a significant effect on emulsion physical stability. In a fixed oil volume fraction, physical stability increases with the increase of nanoparticles' concentration. In contrast, the oil content showed different effects on the properties of emulsions prepared with different concentrations of nanoparticles.
Effect of Moderate Hypothermia vs Normothermia on 30-Day Mortality in Patients With Cardiogenic Shock Receiving Venoarterial Extracorporeal Membrane Oxygenation: A Randomized Clinical Trial
Bruno Levy, Nicolas Girerd, Julien Amour, Emmanuel Besnier, Nicolas Nesseler, Julie Helms, Clément Delmas, Romain Sonneville, Catherine Guidon, Bertrand Rozec, Helène David, David Bougon, Oussama Chaouch, Oulehri Walid, Hervé Dupont, Nicolas Belin, Lucie Gaide-Chevronnay, Patrick Rossignol, Antoine Kimmoun, Kevin Duarte, Arthur S Slutsky, Daniel Brodie, Jean-Luc Fellahi, Alexandre Ouattara, Alain Combes
Journal of the American Medical Association, 2022, 327 (5), pp.442-453. ⟨10.1001/jama.2021.24776⟩
Article dans une revueAbstractIMPORTANCE: The optimal approach to the use of venoarterial extracorporeal membrane oxygenation (ECMO) during cardiogenic shock is uncertain. OBJECTIVE: To determine whether early use of moderate hypothermia (33-34 °C) compared with strict normothermia (36-37 °C) improves mortality in patients with cardiogenic shock receiving venoarterial ECMO. DESIGN, SETTING, AND PARTICIPANTS: Randomized clinical trial of patients (who were eligible if they had been endotracheally intubated and were receiving venoarterial ECMO for cardiogenic shock for <6 hours) conducted in the intensive care units at 20 French cardiac shock care centers between October 2016 and July 2019. Of 786 eligible patients, 374 were randomized. Final follow-up occurred in November 2019. INTERVENTIONS: Early moderate hypothermia (33-34 °C; n = 168) for 24 hours or strict normothermia (36-37 °C; n = 166). MAIN OUTCOMES AND MEASURES: The primary outcome was mortality at 30 days. There were 31 secondary outcomes including mortality at days 7, 60, and 180; a composite outcome of death, heart transplant, escalation to left ventricular assist device implantation, or stroke at days 30, 60, and 180; and days without requiring a ventilator or kidney replacement therapy at days 30, 60, and 180. Adverse events included rates of severe bleeding, sepsis, and number of units of packed red blood cells transfused during venoarterial ECMO. RESULTS: Among the 374 patients who were randomized, 334 completed the trial (mean age, 58 [SD, 12] years; 24% women) and were included in the primary analysis. At 30 days, 71 patients (42%) in the moderate hypothermia group had died vs 84 patients (51%) in the normothermia group (adjusted odds ratio, 0.71 [95% CI, 0.45 to 1.13], P = .15; risk difference, -8.3% [95% CI, -16.3% to -0.3%]). For the composite outcome of death, heart transplant, escalation to left ventricular assist device implantation, or stroke at day 30, the adjusted odds ratio was 0.61 (95% CI, 0.39 to 0.96; P = .03) for the moderate hypothermia group compared with the normothermia group and the risk difference was -11.5% (95% CI, -23.2% to 0.2%). Of the 31 secondary outcomes, 30 were inconclusive. The incidence of moderate or severe bleeding was 41% in the moderate hypothermia group vs 42% in the normothermia group. The incidence of infections was 52% in both groups. The incidence of bacteremia was 20% in the moderate hypothermia group vs 30% in the normothermia group. CONCLUSIONS AND RELEVANCE: In this randomized clinical trial involving patients with refractory cardiogenic shock treated with venoarterial ECMO, early application of moderate hypothermia for 24 hours did not significantly increase survival compared with normothermia. However, because the 95% CI was wide and included a potentially important effect size, these findings should be considered inconclusive. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT02754193.
Fungal infections in mechanically ventilated patients with COVID-19 during the first wave: the French multicentre MYCOVID study
Jean-Pierre Gangneux, Eric Dannaoui, Arnaud Fekkar, Charles-Edouard Luyt, Françoise Botterel, Nicolas de Prost, Jean-Marc Tadié, Florian Reizine, Sandrine Houzé, Jean-François Timsit, Xavier Iriart, Béatrice Riu-Poulenc, Boualem Sendid, Saad Nseir, Florence Persat, Florent Wallet, Patrice Le Pape, Emmanuel Canet, Ana Novara, Melek Manai, Estelle Cateau, Arnaud W Thille, Sophie Brun, Yves Cohen, Alexandre Alanio, Bruno Megarbane, Muriel Cornet, Nicolas Terzi, Lionel Lamhaut, Estelle Sabourin, Guillaume Desoubeaux, Stephan Ehrmann, C. Hennequin, Guillaume Voiriot, Gilles Nevez, Cécile Aubron, Ferhat Meziani, Marion Blaize, Julien Mayaux, Antoine Monsel, Frédérique Boquel, Florence Robert-Gangneux, Yves Le Tulzo, Philippe Seguin, Hélène Guegan, Brice Autier, Matthieu Lesouhaitier, Romain Pelletier, Sorya Belaz, Christine Bonnal, Antoine Berry, Jordan Leroy, Nadine François, Jean-Christophe Richard, Sylvie Paulus, Laurent Argaud, Damien Dupont, Jean Menotti, Florent Morio, Marie Soulié, Carole Schwebel, Cécile Garnaud, Juliette Guitard, Solène Le Gal, Dorothée Quinio, Jeff Morcet, Bruno Laviolle, Jean-Ralph Zahar, Marie-Elizabeth Bougnoux
The Lancet Respiratory Medicine, 2022, 10 (2), pp.180-190. ⟨10.1016/s2213-2600(21)00442-2⟩
Article dans une revueAbstractBACKGROUND: Patients with severe COVID-19 have emerged as a population at high risk of invasive fungal infections (IFIs). However, to our knowledge, the prevalence of IFIs has not yet been assessed in large populations of mechanically ventilated patients. We aimed to identify the prevalence, risk factors, and mortality associated with IFIs in mechanically ventilated patients with COVID-19 under intensive care. METHODS: We performed a national, multicentre, observational cohort study in 18 French intensive care units (ICUs). We retrospectively and prospectively enrolled adult patients (aged ≥18 years) with RT-PCR-confirmed SARS-CoV-2 infection and requiring mechanical ventilation for acute respiratory distress syndrome, with all demographic and clinical and biological follow-up data anonymised and collected from electronic case report forms. Patients were systematically screened for respiratory fungal microorganisms once or twice a week during the period of mechanical ventilation up to ICU discharge. The primary outcome was the prevalence of IFIs in all eligible participants with a minimum of three microbiological samples screened during ICU admission, with proven or probable (pr/pb) COVID-19-associated pulmonary aspergillosis (CAPA) classified according to the recent ECMM/ISHAM definitions. Secondary outcomes were risk factors of pr/pb CAPA, ICU mortality between the pr/pb CAPA and non-pr/pb CAPA groups, and associations of pr/pb CAPA and related variables with ICU mortality, identified by regression models. The MYCOVID study is registered with ClinicalTrials.gov, NCT04368221. FINDINGS: Between Feb 29 and July 9, 2020, we enrolled 565 mechanically ventilated patients with COVID-19. 509 patients with at least three screening samples were analysed (mean age 59·4 years [SD 12·5], 400 [79%] men). 128 (25%) patients had 138 episodes of pr/pb or possible IFIs. 76 (15%) patients fulfilled the criteria for pr/pb CAPA. According to multivariate analysis, age older than 62 years (odds ratio [OR] 2·34 [95% CI 1·39-3·92], p=0·0013), treatment with dexamethasone and anti-IL-6 (OR 2·71 [1·12-6·56], p=0·027), and long duration of mechanical ventilation (\textgreater14 days; OR 2·16 [1·14-4·09], p=0·019) were independently associated with pr/pb CAPA. 38 (7%) patients had one or more other pr/pb IFIs: 32 (6%) had candidaemia, six (1%) had invasive mucormycosis, and one (\textless1%) had invasive fusariosis. Multivariate analysis of associations with death, adjusted for candidaemia, for the 509 patients identified three significant factors: age older than 62 years (hazard ratio [HR] 1·71 [95% CI 1·26-2·32], p=0·0005), solid organ transplantation (HR 2·46 [1·53-3·95], p=0·0002), and pr/pb CAPA (HR 1·45 [95% CI 1·03-2·03], p=0·033). At time of ICU discharge, survival curves showed that overall ICU mortality was significantly higher in patients with pr/pb CAPA than in those without, at 61·8% (95% CI 50·0-72·8) versus 32·1% (27·7-36·7; p\textless0·0001). INTERPRETATION: This study shows the high prevalence of invasive pulmonary aspergillosis and candidaemia and high mortality associated with pr/pb CAPA in mechanically ventilated patients with COVID-19. These findings highlight the need for active surveillance of fungal pathogens in patients with severe COVID-19. FUNDING: Pfizer.
Bone marrow necrosis induced by massive Staphylococcus aureus infiltration
Louise-Marie Jandeaux, Alice Eischen, Antoine Grillon, Julien Demiselle
Intensive Care Medicine, 2022, 48 (6), pp.746-747. ⟨10.1007/s00134-022-06619-y⟩
Article dans une revueFlavaglines: Their Discovery from Plants Used in Traditional Chinese Medicine, Synthesis, and Drug Development Against Cancer and Immune Disorders
Dong Wang, Mustafa Ali Tezeren, Hussein Abou Hamdan, Peng Yu, Canan Nebigil-Désaubry, Laurent Désaubry
Current Chinese Chemistry, 2022, 2 (2), ⟨10.2174/2666001601666211126091737⟩
Article dans une revueAbstractFlavaglines, a family of compounds from plants used in traditional Chinese medicine, exhibit a broad range of biological effects, including anticancer, antiviral, cardioprotective, and anti-inflammatory activities. They exert their action by targeting the scaffold proteins called prohibitin-1 and -2 and the mRNA helicases eIF4A and DDX3. Flavaglines are densely functionalized cyclopenta[b]benzofurans that have attracted the attention of some of the most eminent organic chemists. This review provides an overview of the biosynthesis, total synthesis, and pharmacological activities of flavaglines, which have recently culminated with the entrance of a synthetic derivative, Zotatifin, into clinical trials against advanced refractory solid tumors, intolerant to standard treatments.
Relevant Biomarkers in Medical Practices: An Analysis of the Needs Addressed by an International Survey
Laure Abensur Vuillaume, Thierry Leichle, Pierrick Le Borgne, Mathieu Grajoszex, Christophe Goetz, Paul L Voss, Abdallah Ougazzaden, Jean-Paul Salvestrini, Marie-Pia D’ortho
Journal of Personalized Medicine, 2022, 12 (1), pp.106. ⟨10.3390/jpm12010106⟩
Article dans une revueAbstract(1) Backround: Technological advances should foster gains in physicians’ efficiency. For example, a reduction of the medical decision time can be enabled by faster biological tests. The main objective of this study was to collect responses from an international panel of physicians on their needs for biomarkers and also to convey the improvement in the outcome to be made possible by the potential development of fast diagnostic tests for these biomarkers. (2) Methods: we distributed a questionnaire on the Internet to physicians. (3) Results: 508 physicians participated in this survey. The mean age was 38 years. General practice and emergency medicine were heavily represented, with 95% CIs of 44% (39.78, 48.41) and 32% (27.84, 35.94)), respectively. The two most represented countries were France (95% CI: 74% (70.20, 77.83)) and the USA (95% CI: 11% (8.65, 14.18)). Ninety-eight percentages of the physicians thought that obtaining cited biomarkers more quickly would be beneficial to their practice and to patient’s care. The main biomarkers of interest identified by our panel were troponin (95% CI: 51% (46.24, 54.94)), C-reactive protein (95% CI: 42% (38.03, 46.62)), D-dimer (95% CI: 29% (24.80, 32.68)), and brain natriuretic peptide (95% CI: 13% (10.25, 16.13)). (4) Conclusions: Our study highlights the real technological need for fast biomarker results, which could be provided by biosensors. The relevance of some answers such as troponin is questionable.
The Impact of Age on In-Hospital Mortality in Critically Ill COVID-19 Patients: A Retrospective and Multicenter Study
Pierrick Le Borgne, Quentin Dellenbach, Karine Alame, Marc Noizet, Yannick Gottwalles, Tahar Chouihed, Laure Abensur Vuillaume, Charles-Eric Lavoignet, Lise Bérard, Lise Molter, Stéphane Gennai, Sabrina Kepka, François Lefebvre, Pascal Bilbault
Diagnostics, 2022, 12 (3), pp.666. ⟨10.3390/diagnostics12030666⟩
Article dans une revueAbstractIntroduction: For the past two years, healthcare systems worldwide have been battling the ongoing COVID-19 pandemic. Several studies tried to find predictive factors of mortality in COVID-19 patients. We aimed to research age as a predictive factor associated with in-hospital mortality in severe and critical SARS-CoV-2 infection. Methods: Between 1 March and 20 April 2020, we conducted a multicenter and retrospective study on a cohort of severe COVID-19 patients who were all hospitalized in the Intensive Care Unit (ICU). We led our study in nine hospitals of northeast France, one of the pandemic’s epicenters in Europe. Results: The median age of our study population was 66 years (58–72 years). Mortality was 24.6% (CI 95%: 20.6–29%) in the ICU and 26.5% (CI 95%: 22.3–31%) in the hospital. Non-survivors were significantly older (69 versus 64 years, p < 0.001) than the survivors. Although a history of cardio-vascular diseases was more frequent in the non-survivor group (p = 0.015), other underlying conditions and prior level of autonomy did not differ between the two groups. On multivariable analysis, age appeared to be an interesting predictive factor of in-hospital mortality. Thus, age ranges of 65 to 74 years (OR = 2.962, CI 95%: 1.231–7.132, p = 0.015) were predictive of mortality, whereas the group of patients aged over 75 years was not (OR = 3.084, CI 95%: 0.952–9.992, p = 0.06). Similarly, all comorbidities except for immunodeficiency (OR = 4.207, CI 95%: 1.006–17.586, p = 0.049) were not predictive of mortality. Finally, survival follow-up was obtained for the study population. Conclusion: Age appears to be a relevant predictive factor of in-hospital mortality in cases of severe or critical SARS-CoV-2 infection.
Cardiac injury in COVID-19
Julie Helms, Alain Combes, Nadia Aissaoui
Intensive Care Medicine, 2022, 48 (1), pp.111-113. ⟨10.1007/s00134-021-06555-3⟩
Article dans une revueAbstractAbstract OBJECTIVES Postoperative mediastinitis, a feared complication after cardiac surgery, is associated with high mortality, especially of critically ill patients. Candida species infections are rare and severe, with poorly known outcomes. We conducted a case–control study to describe the characteristics, management and outcomes of patients with postoperative Candida mediastinitis. METHODS This French, monocentre, retrospective study included all patients with postoperative Candida mediastinitis (January 2003–February 2020) requiring intensive care unit admission. Candida mediastinitis patients (henceforth cases) were matched 1:1 with postoperative bacterial mediastinitis (henceforth control), based on 3 factors during mediastinitis management: age >40 years, cardiac transplantation and invasive circulatory device used. The primary end point was the probability of survival within 1 year after intensive care unit (ICU) admission. RESULTS Forty cases were matched to 40 controls. The global male/female ratio was 2.1, with mean age at admission 47.9 ± 13.8 years. Candida species were: 67.5% albicans, 17.5% glabrata, 15% parapsilosis, 5.0% tropicalis, 2.5% krusei and 2.5% lusitaniae. The median duration of mechanical ventilation was 23, 68.8% of patients received renal replacement therapy and 62.5% extracorporeal membrane oxygenation support. The probability of survival within the first year after ICU admission was 40 ± 5.5% and was significantly lower for cases than for controls (43 ± 8% vs 80 ± 6.3%, respectively; Log-rank test: P < 0.0001). The multivariable Cox proportional hazards model retained only renal replacement therapy [hazard ratio (HR) 3.7, 95% confidence interval (CI) 1.1–13.1; P = 0.04] and Candida mediastinitis (HR 2.4, 95% CI 1.1–5.6; P = 0.04) as independently associated with 1-year mortality. CONCLUSIONS Candida mediastinitis is a serious event after cardiac surgery and independently associated with 1-year mortality. Further studies are needed to determine whether deaths are directly attributable to Candida mediastinitis.
CDX2 controls genes involved in the metabolism of 5-fluorouracil and is associated with reduced efficacy of chemotherapy in colorectal cancer
Jean-Baptiste Delhorme, Emilie Bersuder, Chloé Terciolo, Ourania Vlami, Marie Pierrette Chenard, Elisabeth Martin, Serge Rohr, Cecile Brigand, Isabelle Duluc, Jean-Noël Freund, Isabelle Gross
Biomedicine and Pharmacotherapy, 2022, 147, pp.112630. ⟨10.1016/j.biopha.2022.112630⟩
Article dans une revueAbstractMost patients affected with colorectal cancers (CRC) are treated with 5-fluorouracil (5-FU)-based chemotherapy but its efficacy is often hampered by resistance mechanisms linked to tumor heterogeneity. A better understanding of the molecular determinants involved in chemoresistance is critical for precision medicine and therapeutic progress. Caudal type homeobox 2 (CDX2) is a master regulator of intestinal identity and acts as tumor suppressor in the colon. Here, using a translational approach, we examined the role of CDX2 in CRC chemoresistance. Unexpectedly, we discovered that the prognosis value of CDX2 for disease-free survival of patients affected with CRC is lost upon chemotherapy and that CDX2 expression enhances resistance of colon cancer cells towards 5-FU. At the molecular level, we found that CDX2 expression correlates with higher levels of genes regulating the bioavailability of 5-FU through efflux (ABCC11) and catabolism (DPYD) in patients affected with CRC and CRC cell lines. We further showed that CDX2 directly regulates the expression of ABCC11 and that the inhibition of ABCC11 improves 5-FU-sensitivity of CDX2-expressing colon cancer cells. Thus, this study illustrates how biological functions are hijacked in CRC cells and reveals the therapeutic interest of CDX2/ABCC11/DPYD to improve systemic chemotherapy in CRC.
Evolution of Neuroimaging Findings in Severe COVID-19 Patients with Initial Neurological Impairment: An Observational Study
François Lersy, Caroline Bund, Mathieu Anheim, Mary Mondino, Vincent Noblet, Shirley Lazzara, Clélie Phillipps, Olivier Collange, Walid Oulehri, Paul-Michel Mertes, Julie Helms, Hamid Merdji, Maleka Schenck, Francis Schneider, Julien Pottecher, Céline Giraudeau, Agathe Chammas, François-Daniel Ardellier, Seyyid Baloglu, Khalid Ambarki, Izzie-Jacques Namer, Stéphane Kremer
Viruses, 2022, 14 (5), pp.949. ⟨10.3390/v14050949⟩
Article dans une revueAbstractBackground and Objectives: Cerebral complications related to the COVID-19 were documented by brain MRIs during the acute phase. The purpose of the present study was to describe the evolution of these neuroimaging findings (MRI and FDG-PET/CT) and describe the neurocognitive outcomes of these patients. Methods: During the first wave of the COVID-19 outbreak between 1 March and 31 May 2020, 112 consecutive COVID-19 patients with neurologic manifestations underwent a brain MRI at Strasbourg University hospitals. After recovery, during follow-up, of these 112 patients, 31 (initially hospitalized in intensive care units) underwent additional imaging studies (at least one brain MRI). Results: Twenty-three men (74%) and eight women (26%) with a mean age of 61 years (range: 18–79) were included. Leptomeningeal enhancement, diffuse brain microhemorrhages, acute ischemic strokes, suspicion of cerebral vasculitis, and acute inflammatory demyelinating lesions were described on the initial brain MRIs. During follow-up, the evolution of the leptomeningeal enhancement was discordant, and the cerebral microhemorrhages were stable. We observed normalization of the vessel walls in all patients suspected of cerebral vasculitis. Four patients (13%) demonstrated new complications during follow-up (ischemic strokes, hypoglossal neuritis, marked increase in the white matter FLAIR hyperintensities with presumed vascular origin, and one suspected case of cerebral vasculitis). Concerning the grey matter volumetry, we observed a loss of volume of 3.2% during an average period of approximately five months. During follow-up, the more frequent FDG-PET/CT findings were hypometabolism in temporal and insular regions. Conclusion: A minority of initially severe COVID-19 patients demonstrated new complications on their brain MRIs during follow-up after recovery.
Vascularization of Patient-Derived Tumoroid from Non-Small-Cell Lung Cancer and Its Microenvironment
Joseph Seitlinger, Anasse Nounsi, Ysia Idoux-Gillet, Eloy Santos Pujol, Hélène Lê, Erwan Grandgirard, Anne Olland, Veronique Lindner, Cécile Zaupa, Jean-Marc Balloul, Eric Quemeneur, Gilbert Massard, Pierre-Emmanuel Falcoz, Guoqiang Hua, Nadia Benkirane-Jessel
Biomedicines, 2022, 10 (5), pp.1103. ⟨10.3390/biomedicines10051103⟩
Article dans une revueAbstractPatient-derived tumoroid (PDT) has been developed and used for anti-drug screening in the last decade. As compared to other existing drug screening models, a PDT-based in vitro 3D cell culture model could preserve the histological and mutational characteristics of their corresponding tumors and mimic the tumor microenvironment. However, few studies have been carried out to improve the microvascular network connecting the PDT and its surrounding microenvironment, knowing that poor tumor-selective drug transport and delivery is one of the major reasons for both the failure of anti-cancer drug screens and resistance in clinical treatment. In this study, we formed vascularized PDTs in six days using multiple cell types which maintain the histopathological features of the original cancer tissue. Furthermore, our results demonstrated a vascular network connecting PDT and its surrounding microenvironment. This fast and promising PDT model opens new perspectives for personalized medicine: this model could easily be used to test all therapeutic treatments and could be connected with a microfluidic device for more accurate drug screening
Comparison of Short- and Long-Term Mortality in Patients with or without Cancer Admitted to the ICU for Septic Shock: A Retrospective Observational Study
Pierrick Le Borgne, Léa Feuillassier, Maleka Schenck, Jean-Etienne Herbrecht, Ralf Janssen-Langenstein, Célestine Simand, Justine Gantzer, Simon Nannini, Luc-Matthieu Fornecker, Karine Alamé, François Lefebvre, Vincent Castelain, Francis Schneider, Raphaël Clere-Jehl
Cancers, 2022, 14 (13), pp.3196. ⟨10.3390/cancers14133196⟩
Article dans une revueAbstractIntroduction: Cancer patients are at high risk of developing septic shock (SSh) and are increasingly admitted to ICU given their improved long-term prognosis. We, therefore, compared the prognosis of cancer and non-cancer patients with SSh. Methods: We conducted a monocentric, retrospective cohort study (2013-2019) on patients admitted to ICU for SSh. We compared the clinical characteristics and management and studied short- and long-term mortality with ICU and in-hospital mortality and 1-year survival according to cancer status. Results: We analyzed 239 ICU stays in 210 patients, 59.5% of whom were men (n = 125), with a median age of 66.5 (IQR 56.3-77.0). Of the 121 cancer patients (57.6% of all patients), 70 had solid tumors (33.3%), and 51 had hematological malignancies (24.3%). When comparing ICU stays of patients with versus without cancer (n = 148 vs. n = 91 stays, respectively), mortality reached 30.4% (n = 45) vs. 30.0% (n = 27) in the ICU (p = 0.95), and 41.6% (n = 59) vs. 35.6% (n = 32) in hospital (p = 0.36), respectively. ICU length of stay (LOS) was 5.0 (2.0-11.3) vs. 6.0 (3.0-15.0) days (p = 0.27), whereas in-hospital LOS was 25.5 (13.8-42.0) vs. 19.5 (10.8-41.0) days (p = 0.33). Upon multivariate analysis, renal replacement therapy (OR = 2.29, CI95%: 1.06-4.93, p = 0.03), disseminated intravascular coagulation (OR = 5.89, CI95%: 2.49-13.92, p < 0.01), and mechanical ventilation (OR = 7.85, CI95%: 2.90-21.20, p < 0.01) were associated with ICU mortality, whereas malignancy, hematological, or solid tumors were not (OR = 1.41, CI95%: 0.65-3.04; p = 0.38). Similarly, overall cancer status was not associated with in-hospital mortality (OR = 1.99, CI95%: 0.98-4.03, p = 0.06); however, solid cancers were associated with increased in-hospital mortality (OR = 2.52, CI95%: 1.12-5.67, p = 0.03). Lastly, mortality was not significantly different at 365-day follow-up between patients with and without cancer. Conclusions: In-hospital and ICU mortality, as well as LOS, were not different in SSh patients with and without cancer, suggesting that malignancies should no longer be considered a barrier to ICU admission. Keywords: critical care; immunocompromised host; neoplasms; septic shock; treatment outcome.
Factors associated with acute mesenteric ischemia among critically ill ventilated patients with shock: a post hoc analysis of the NUTRIREA2 trial
Gaël Piton, Amélie Le Gouge, Julie Boisramé-Helms, Nadia Anguel, Laurent Argaud, Pierre Asfar, Vlad Botoc, Anne Bretagnol, Laurent Brisard, Hoang-Nam Bui, Emmanuel Canet, Delphine Chatelier, Louis Chauvelot, Michael Darmon, Vincent Das, Jérôme Devaquet, Michel Djibré, Frédérique Ganster, Maité Garrouste-Orgeas, Stéphane Gaudry, Olivier Gontier, Samuel Groyer, Bertrand Guidet, Jean-Etienne Herbrecht, Yannick Hourmant, Jean-Claude Lacherade, Philippe Letocart, Frédéric Martino, Virginie Maxime, Emmanuelle Mercier, Jean-Paul Mira, Saad Nseir, Jean-Pierre Quenot, Jack Richecoeur, Jean-Philippe Rigaud, Damien Roux, David Schnell, Carole Schwebel, Daniel Silva, Michel Sirodot, Bertrand Souweine, Nathalie Thieulot-Rolin, François Tinturier, Patrice Tirot, Didier Thévenin, Guillaume Thiéry, Jean-Baptiste Lascarrou, Jean Reignier
Intensive Care Medicine, 2022, 48 (4), pp.458-466. ⟨10.1007/s00134-022-06637-w⟩
Article dans une revueAbstractPurpose: Acute mesenteric ischemia (AMI) is a rare, but life-threatening condition occurring among critically ill patients. Several factors have been associated with AMI, but the causal link is debated, most studies being retrospective. Among these factors, enteral nutrition (EN) could be associated with AMI, in particular among patients with shock. We aimed to study the factors independently associated with AMI in a post hoc analysis of the NUTRIREA-2 trial including 2410 critically ill ventilated patients with shock, randomly assigned to receive EN or parenteral nutrition (PN). Methods: Post hoc analysis of the NUTRIREA-2 trial was conducted. Ventilated adults with shock were randomly assigned to receive EN or PN. AMI was assessed by computed tomography, endoscopy, or laparotomy. Factors associated with AMI were studied by univariate and multivariate analysis. Results: 2410 patients from 44 French intensive care units (ICUs) were included in the study: 1202 patients in the enteral group and 1208 patients in the parenteral group. The median age was 67 [58–76] years, with 67% men, a SAPS II score of 59 [46–74], and a medical cause for ICU admission in 92.7%. AMI was diagnosed among 24 (1%) patients, mainly by computed tomography (79%) or endoscopy (38%). The mechanism of AMI was non-occlusive mesenteric ischemia (n = 12), occlusive (n = 4), and indeterminate (n = 8). The median duration between inclusion in the trial and AMI diagnosis was 4 [1–11] days. Patients with AMI were older, had a higher SAPS II score at ICU admission, had higher plasma lactate, creatinine, and ASAT concentrations and lower hemoglobin concentration, had more frequently EN, dobutamine, and CVVHDF at inclusion, developed more frequently bacteremia during ICU stay, and had higher 28-day and 90-day mortality rates compared with patients without AMI. By multivariate analysis, AMI was independently associated with EN, dobutamine use, SAPS II score ≥ 62 and hemoglobin concentration ≤ 10.9 g/dL. Conclusion: Among critically ill ventilated patients with shock, EN, dobutamine use, SAPS II score ≥ 62 and hemoglobin ≤ 10.9 g/dL were independently associated with AMI. Among critically ill ventilated patients requiring vasopressors, EN should be delayed or introduced cautiously in case of low cardiac output requiring dobutamine and/or in case of multiple organ failure with high SAPS II score.
Postthrombotic syndrome and quality of life after deep vein thrombosis in patients treated with edoxaban versus warfarin
Ingrid M. Bistervels, Roisin Bavalia, Jan Beyer-Westendorf, Arina J. Ten Cate-Hoek, Sebastian M. Schellong, Michael J. Kovacs, Nicolas Falvo, Karina Meijer, Dominique Stephan, Wim G. Boersma, Marije Ten Wolde, Francis Couturaud, Peter Verhamme, Dominique Brisot, Susan R. Kahn, Waleed Ghanima, Karine Montaclair, Amanda Hugman, Patrick Carroll, Gilles Pernod, Olivier Sanchez, Emile Ferrari, Pierre-Marie Roy, Marie-Antoinette Pietri-Sevestre, Simone Birocchi, Hilde S. Wik, Barbara A. Hutten, Michiel Coppens, Christiane Naue, Michael A. Grosso, Minggao Shi, Yong Lin, Isabelle Quere, Saskia Middeldorp
Research and Practice in Thrombosis and Haemostasis, 2022, 6 (5), ⟨10.1002/rth2.12748⟩
Article dans une revueAbstractBackground Postthrombotic syndrome (PTS) is a long-term complication after deep vein thrombosis (DVT) and can affect quality of life (QoL). Pathogenesis is not fully understood but inadequate anticoagulant therapy with vitamin K antagonists is a known risk factor for the development of PTS. Objectives To compare the prevalence of PTS after acute DVT and the long-term QoL following DVT between patients treated with edoxaban or warfarin. Methods We performed a long-term follow-up study in a subset of patients with DVT who participated in the Hokusai-VTE trial between 2010 and 2012 (NCT00986154). Primary outcome was the prevalence of PTS, defined by the Villalta score. The secondary outcome was QoL, assessed by validated disease-specific (VEINES-QOL) and generic health-related (SF-36) questionnaires. Results Between 2017 and 2020, 316 patients were enrolled in 26 centers in eight countries, of which 168 (53%) patients had been assigned to edoxaban and 148 (47%) to warfarin during the Hokusai-VTE trial. Clinical, demographic, and thrombus-specific characteristics were comparable for both groups. Mean (SD) time since randomization in the Hokusai-VTE trial was 7.0 (1.0) years. PTS was diagnosed in 85 (51%) patients treated with edoxaban and 62 (42%) patients treated with warfarin (adjusted odds ratio 1.6, 95% CI 1.0-2.6). Mean differences in QoL scores between treatment groups were not clinically relevant. Conclusion Contrary to our hypothesis, the prevalence of PTS tended to be higher in patients treated with edoxaban compared with warfarin. No differences in QoL were observed. Further research is warranted to unravel the role of anticoagulant therapy on development of PTS.
Crosstalk Communications Between Islets Cells and Insulin Target Tissue: The Hidden Face of Iceberg
Allan Langlois, Aurore Dumond, Julie Vion, Michel Pinget, Karim Bouzakri
Frontiers in Endocrinology, 2022, 13, pp.836344. ⟨10.3389/fendo.2022.836344⟩
Article dans une revueAbstractThe regulation of insulin secretion is under control of a complex inter-organ/cells crosstalk involving various metabolites and/or physical connections. In this review, we try to illustrate with current knowledge how β-cells communicate with other cell types and organs in physiological and pathological contexts. Moreover, this review will provide a better understanding of the microenvironment and of the context in which β-cells exist and how this can influence their survival and function. Recent studies showed that β-cell insulin secretion is regulated also by a direct and indirect inter-organ/inter-cellular communication involving various factors, illustrating the idea of “the hidden face of the iceberg”. Moreover, any disruption on the physiological communication between β-cells and other cells or organs can participate on diabetes onset. Therefore, for new anti-diabetic treatments’ development, it is necessary to consider the entire network of cells and organs involved in the regulation of β-cellular function and no longer just β-cell or pancreatic islet alone. In this context, we discuss here the intra-islet communication, the β-cell/skeletal muscle, β-cell/adipose tissue and β-cell/liver cross talk
Nanomedicine and Periodontal Regenerative Treatment
Olivier Huck, Céline Stutz, Pierre-Yves Gegout, Hayriye Özçelik, Nadia Benkirane-Jessel, Catherine Petit, Fareeha Batool
Dental Clinics of North America, 2022, 66 (1), pp.131-155. ⟨10.1016/j.cden.2021.06.005⟩
Article dans une revueAbstractCurrent periodontal treatments aim to control bacterial infection and to reduce inflammation. To optimize contemporary conventional treatments that present limitations due to the hinderance to reach the lesion site, new perspectives aroused based on the development of nanomedicine. Nanomedecine, and in particular the development of nanocarriers, allows to deliver host-modulatory drugs or antibacterial molecules at the lesion site in an optimal concentration with a reduced toxicity and risk of systemic side effects. Indeed, chitosan and polylactic-co-glycolic acid loaded nanoparticles, carbon quantum dots and mesoporous silicates open new perspectives in the field of periodontitis management. The potential therapeutic impact of the main nanocarriers is discussed in the present review.
Factors Associated with and Prognosis Impact of Perceived Sleep Quality and Estimated Quantity in Patients Receiving Non-Invasive Ventilation for Acute Respiratory Failure
Matthieu Lê Dinh, Michael Darmon, Achille Kouatchet, Samir Jaber, Ferhat Meziani, Sebastien Perbet, Gerald Chanques, Elie Azoulay, Alexandre Demoule
Journal of Clinical Medicine, 2022, 11 (15), pp.4620. ⟨10.3390/jcm11154620⟩
Article dans une revueAbstractBackground. The objectives of this study were (1) to determine factors associated with impaired sleep and (2) to evaluate the relationship between impaired sleep and the outcome.Methods. Secondary analysis of a prospective observational cohort study in 54 intensive care units in France and Belgium. Sleep quality was quantified by the patients with a semi-quantitative scale.Results. Among the 389 patients included, 40% reported poor sleep during the first night in the ICU and the median (interquartile) total sleep time was 4 h (2–5). Factors independently associated with poor sleep quality were the SOFA score (odds ratio [OR] 0.90, p = 0.037), anxiety (OR 0.43, p = 0.001) and the presence of air leaks (OR 0.52, p = 0.013). Factors independently associated with short-estimated sleep duration (<4 h) were the SOFA score (1.13, p = 0.005), dyspnea on admission (1.13, p = 0.031) and the presence of air leaks (1.92, p = 0.008). Non-invasive ventilation failure was independently associated with poor sleep quality (OR 3.02, p = 0.021) and short sleep duration (OR 0.77, p = 0.001). Sleep quality and duration were not associated with an increase in mortality or length of stay.Conclusions. The sleep of patients with ARF requiring NIV is impaired and is associated with a high rate of NIV failure.
Editorial: in vitro and in vivo non-clinical models of kidney cancers
Valérian Dormoy, Odile Filhol, Carole Sourbier, Thierry Massfelder
Frontiers in Oncology, 2022, 12, pp.987682. ⟨10.3389/fonc.2022.987682⟩
Article dans une revueGenomic testing among patients with newly diagnosed advanced non-small cell lung cancer in the United States: A contemporary clinical practice patterns study
Luis Paz-Ares, Adam Gondos, Diego Saldana, Marlene Thomas, Céline Mascaux, Lukas Bubendorf, Fabrice Barlesi
Lung Cancer, 2022, 167, pp.41-48. ⟨10.1016/j.lungcan.2022.01.021⟩
Article dans une revueAbstractObjectives: According to 2018 United States and international lung cancer and pathology guidelines, testing of EGFR, ALK, ROS1 and BRAF genes is a minimum requirement to identify targeted therapy options in patients with advanced non-small cell lung cancer (aNSCLC). We describe real-world use and clinical features of next generation sequencing (NGS) and other non-NGS testing technologies in these patients. Materials and methods: Patients were from the Flatiron Health electronic health record-derived de-identified database and were newly diagnosed with non-squamous aNSCLC between 1 January 2018 and 30 June 2019. We describe occurrence and patterns of NGS-(including comprehensive genomic profiling [CGP]) and non-NGSbased genomic testing before the start of first-line therapy, unsuccessful genotyping (< 4 genes tested) and incidence of potentially missed targeted therapy options (< 4 genes tested with no positive results). Results: Among 3050 patients, 2356 received any type of genomic testing (NGS: 1406 [59.7%]). Unsuccessful genotyping occurred in 13.2% and 52.2% of NGS-and non-NGS-tested patients, respectively. Among NGS-tested patients, 10.0% had a potentially missed targeted therapy option (CGP: 2.9%), compared with 40.2% in the nonNGS tested group. While all four guideline-recommended genes were tested in & GE; 92% of patients who had NGS testing, when only non-NGS testing was used, although EGFR and ALK had similarly high testing proportions, BRAF and ROS1 (56.1% and 83.7%, respectively) were examined less often. Conclusions: Our findings suggest that in aNSCLC clinical practice, NGS testing may help to avoid potentially missed targeted therapy options and improve testing uptake for recently approved biomarkers. Results therefore support the use of guideline-recommended broad-panel NGS testing in clinical practice.
What Is the optimal elective colectomy for splenic flexure cancer: End of the debate? A multicenter study from the GRECCAR group with a propensity score analysis
Gilles Manceau, Arnaud Alves, Hélène Meillat, Léonor Benhaïm, Mehdi Ouaïssi, Yves Panis, Jean-Jacques Tuech, Bertrand Dousset, Cécile Brigand, Eddy Cotte, Zaher Lakkis, Bogdan Badic, Frédéric Marchal, Charles Sabbagh, Momar Diouf, Mehdi Karoui
Diseases of the Colon & Rectum, 2022, 65 (1), pp.55-65. ⟨10.1097/DCR.0000000000001937⟩
Article dans une revueAbstractBACKGROUND: The optimal elective colectomy in patients with splenic flexure tumor is debated. OBJECTIVE: This study aimed to compare splenic flexure colectomy, left hemicolectomy, and subtotal colectomy for perioperative, histological, and survival outcomes in this setting. DESIGN: This is a multicenter retrospective cohort study. SETTING: Patients diagnosed with nonmetastatic splenic flexure tumor who underwent elective colectomy were included. PATIENTS: Between 2006 and 2014, 313 consecutive patients were operated on in 15 French Research Group of Rectal Cancer Surgery centers. INTERVENTIONS: Propensity score weighting was performed to compare short- and long-term outcomes. MAIN OUTCOME MEASURES: The primary end point was disease-free survival. Secondary end points included overall survival, quality of surgical resection, overall postoperative morbidity, surgical postoperative morbidity, and rate of anastomotic leakage. RESULTS: The most performed surgery was splenic flexure colectomy (59%), followed by subtotal colectomy (23%) and left hemicolectomy (18%). Subtotal colectomy was more often performed by laparotomy compared with splenic flexure colectomy and left hemicolectomy (93% vs 61% vs 56%, p < 0.0001), and was associated with a longer operative time (260 minutes (120–460) vs 180 minutes (68–440) vs 217 minutes (149–480), p < 0.0001). Postoperative morbidity was similar between the 3 groups, but the median length of hospital stay was significantly longer after subtotal colectomy (13 days (5–56) vs 10 (4–175) vs 9 (4–55), p = 0.0007). The median number of harvested lymph nodes was significantly higher after subtotal colectomy compared with splenic flexure colectomy and left hemicolectomy (24 (8–90) vs 15 (1–81) vs 16 (3–52), p < 0.0001). The rate of stage III disease and the number of patients treated by adjuvant chemotherapy were similar between the 3 groups. There was no difference in terms of disease-free survival and overall survival between the 3 procedures. LIMITATIONS: The study was limited by its retrospective design. CONCLUSIONS: In the elective setting, splenic flexure colectomy is safe and oncologically adequate for patients with nonmetastatic splenic flexure tumor. However, given the oncological clearance after splenic flexure colectomy, it seems that the debate is not completely closed.
Role of neutrophils, platelets, and extracellular vesicles and their interactions in COVID‐19‐associated thrombopathy
Antoine Caillon, Antonin Trimaille, Julie Favre, Laurence Jesel-Morel, Olivier Morel, Gilles Kauffenstein
Journal of Thrombosis and Haemostasis, 2022, 20 (1), pp.17-31. ⟨10.1111/jth.15566⟩
Article dans une revueAbstractThe COVID-19 pandemic extended all around the world causing millions of deaths. In addition to acute respiratory distress syndrome, many patients with severe COVID-19 develop thromboembolic complications associated to multiorgan failure and death. Here, we review evidence for the contribution of neutrophils, platelets, and extracellular vesicles (EVs) to the thromboinflammatory process in COVID-19. We discuss how the immune system, influenced by pro-inflammatory molecules, EVs, and neutrophil extracellular traps (NETs), can be caught out in patients with severe outcomes. We highlight how the deficient regulation of the innate immune system favors platelet activation and induces a vicious cycle amplifying an immunothrombogenic environment associated with platelet/NET interactions. In light of these considerations, we discuss potential therapeutic strategies underlining the modulation of purinergic signaling as an interesting target.
Apically Extruded Debris in Curved Root Canals Using a New Reciprocating Single-File Shaping System
Naji Kharouf, Eugenio Pedullà, Walid Nehme, Kadour Akarma, Adrien Mercey, Catherine-Isabelle Gros, Youssef Haikel, Davide Mancino
Journal of Endodontics, 2022, 48 (1), pp.117-122. ⟨10.1016/j.joen.2021.10.002⟩
Article dans une revueAbstractIntroduction The present study addresses the influence of 5 different shaping file systems on apical debris extrusion (AED) using 2 different irrigation protocols. Methods One hundred fifty mandibular first permanent molars were divided into 2 groups and 10 subgroups. The mesial root canals were shaped using One Reci (MicroMega), WaveOne Gold Primary (Dentsply Sirona, York, PA), and ProTaper Next (Dentsply Sirona) using reciprocating motion and One Curve (MicroMega) and ProTaper Next using continuous rotation. The first group and the second one were respectively irrigated with 10 and 5 mL distilled water. Results When the same instrumentation technique was used, the G10 mL subgroups showed statistically lower AED than the G5 mL subgroups (P < .05). The One Reci and One Curve subgroups, in both groups, produced statistically lower AED than the remaining subgroups. Conclusions The cross section of the instrument could be the main parameter in determining the amount of AED. The irrigation volume used during the shaping procedure might affect the amount of AED.
Evidence for reciprocal network interactions between injured hearts and cancer
Melisa N. Guler, Nathalie M. Tscheiller, Maria Sabater-Molina, Juan R. Gimeno, Canan Nebigil-Désaubry
Frontiers in Cardiovascular Medicine, 2022, 9, pp.929259. ⟨10.3389/fcvm.2022.929259⟩
Article dans une revueAbstractHeart failure (HF) and cancer are responsible for 50% of all deaths in middle-aged people. These diseases are tightly linked, which is supported by recent epidemiological studies and case control studies, demonstrating that HF patients have a higher risk to develop cancer such as lung and breast cancer. For HF patients, a one-size-fits-all clinical management strategy is not effective and patient management represents a major economical and clinical burden. Anti-cancer treatments-mediated cardiotoxicity, leading to HF have been extensively studied. However, recent studies showed that even before the initiation of cancer therapy, cancer patients presented impairments in the cardiovascular functions and exercise capacity. Thus, the optimal cardioprotective and surveillance strategies should be applied to cancer patients with pre-existing HF. Recently, preclinical studies addressed the hypothesis that there is bilateral interaction between cardiac injury and cancer development. Understanding of molecular mechanisms of HF-cancer interaction can define the profiles of bilateral signaling networks, and identify the disease-specific biomarkers and possibly therapeutic targets. Here we discuss the shared pathological events, and some treatments of cancer- and HF-mediated risk incidence. Finally, we address the evidences on bilateral connection between cardiac injury (HF and early cardiac remodeling) and cancer through secreted factors (secretoms)
History of bariatric surgery and COVID-19 outcomes in patients with type 2 diabetes: Results from the CORONADO study
Claire Blanchard, Tanguy Perennec, Sarra Smati, Blandine Tramunt, Béatrice Guyomarch, Edith Bigot-Corbel, Lyse Bordier, Sophie Borot, Olivier Bourron, Cyrielle Caussy, Christine Coffin-Boutreux, Anne Dutour, N. Germain, Céline Gonfroy-Leymarie, Laurent Meyer, Gaëtan Prevost, Ronan Roussel, Dominique Seret-Begue, Charles Thivolet, Bruno Vergès, Matthieu Pichelin, Pierre Gourdy, Samy Hadjadj, Matthieu Wargny, François Pattou, Bertrand Cariou
Obesity, 2022, 30 (3), pp.599-605. ⟨10.1002/oby.23314⟩
Article dans une revueAbstractOBJECTIVE: This study assessed the impact of a history of metabolic and bariatric surgery (MBS) on the clinical outcomes in patients with type 2 diabetes (T2D) and severe obesity hospitalized for COVID-19. METHODS: In this post hoc analysis from the nationwide observational CORONADO (Coronavirus SARS-CoV2 and Diabetes Outcomes) study, patients with T2D and a history of MBS were matched with patients without MBS for age, sex, and BMI either at the time of MBS or on admission for COVID-19. The composite primary outcome (CPO) combined invasive mechanical ventilation and/or death within 7 and 28 days following admission. RESULTS: Out of 2,398 CORONADO participants, 20 had a history of MBS. When matching for BMI at the time of MBS and after adjustment for diabetes duration, the CPO occurred less frequently within 7 days (3 vs. 17 events, OR: 0.15 [0.01 to 0.94], p = 0.03) and 28 days (3 vs. 19 events, OR: 0.11 [0.01 to 0.71], p = 0.02) in patients with MBS (n = 16) vs. controls (n = 44). There was no difference in CPO rate between patients with MBS and controls when matching for BMI on admission. CONCLUSIONS: These data are reassuring regarding COVID-19 prognosis in patients with diabetes and a history of MBS compared with those without MBS.
Assessment of plasma Catestatin in COVID-19 reveals a hitherto unknown inflammatory activity with impact on morbidity-mortality
Francis Schneider, Pierrick Le Borgne, Jean-Etienne Herbrecht, François Danion, Morgane Solis, Sophie Hellé, Cosette Betscha, Raphaël Clere-Jehl, François Lefebvre, Vincent Castelain, Yannick Goumon, Marie-Hélène Metz-Boutigue
Frontiers in Immunology, 2022, 13, pp.985472. ⟨10.3389/fimmu.2022.985472⟩
Article dans une revueAbstractIntroduction Neuroendocrine cells release Catestatin (CST) from Chromogranin A (CgA) to regulate stress responses. As regards COVID-19 patients (COVID+) requiring oxygen supply, to date nobody has studied CST as a potential mediator in the regulation of immunity. Patients & Methods: Admission plasma CST and CgA - its precursor - concentrations were measured (ELISA test) in 73 COVID+ and 27 controls. Relationships with demographics, comorbidities, disease severity and outcomes were analysed (Mann-Whitney, Spearman correlation tests, ROC curves). Results: Among COVID+, 49 required ICU-admission (COVID+ICU+) and 24 standard hospitalization (COVID+ICU-). Controls were either healthy staff (COVID-ICU-, n=11) or COVID-ICU+ patients (n=16). Median plasma CST were higher in COVID+ than in controls (1.6 [1.02; 3.79] vs 0.87 [0.59; 2.21] ng/mL, p <0.03), with no difference between COVID+ and COVID-ICU+. There was no difference between groups in either CgA or CST/CgA ratios, but these parameters were lower in healthy controls ( p <0.01). CST did not correlate with either hypoxia- or usual inflammation-related parameters. In-hospital mortality was similar whether COVID+ or not, but COVID+ had longer oxygen support and more complications ( p <0.03). CST concentrations and the CST/CgA ratio were associated with in-hospital mortality ( p <0.01) in COVID+, whereas CgA was not. CgA correlated with care-related infections ( p <0.001). Conclusion: Respiratory COVID patients release significant amounts of CST in the plasma making this protein widely available for the neural regulation of immunity. If confirmed prospectively, plasma CST will reliably help in predicting in-hospital mortality, whereas CgA will facilitate the detection of patients prone to care-related infections.
Mesalazine initiates an anti-oncogenic β-catenin / MUCDHL negative feed-back loop in colon cancer cells by cell-specific mechanisms
Emilie Bersuder, Chloe Terciolo, Mathilde Lechevrel, Elisabeth Martin, Celine Quesnelle, Jean-Noël Freund, Jean-Marie Reimund, Isabelle Gross
Biomedicine and Pharmacotherapy, 2022, 146, pp.112543. ⟨10.1016/j.biopha.2021.112543⟩
Article dans une revueAbstractChronic inflammation associated with intestinal architecture and barrier disruption puts patients with inflammatory bowel disease (IBD) at increased risk of developing colorectal cancer (CRC). Widely used to reduce flares of intestinal inflammation, 5-aminosalicylic acid derivatives (5-ASAs) such as mesalazine appear to also exert more direct mucosal healing and chemopreventive activities against CRC. The mechanisms underlying these activities are poorly understood and may involve the up-regulation of the cadherin-related gene MUCDHL (CDHR5). This atypical cadherin is emerging as a new actor of intestinal homeostasis and opposes colon tumorigenesis. Here, we showed that mesalazine increase mRNA levels of MUCDHL and of other genes involved in the intestinal barrier function in most intestinal cell lines. In addition, using gain / loss of function experiments (agonists, plasmid or siRNAs transfections), luciferase reporter genes and chromatin immunoprecipitation, we thoroughly investigated the molecular mechanisms triggered by mesalazine that lead to the up-regulation of MUCDHL expression. We found that basal transcription of MUCDHL in different CRC cell lines is regulated positively by CDX2 and negatively by β-catenin through a negative feed-back loop. However, mesalazine-stimulation of MUCDHL transcription is controlled by cell-specific mechanisms, involving either enhanced activation of CDX2 and PPAR-γ or repression of the β-catenin inhibitory effect. This work highlights the importance of the cellular and molecular context in the activity of mesalazine and suggests that its efficacy against CRC depends on the genetic alterations of transformed cells.
Discussing the role of circular RNA in the pathogenesis of non-alcoholic fatty liver disease and its complications
Melissa Yepmo, Jean-Baptiste Potier, Michel Pinget, Anastasia Grabarz, Karim Bouzakri, Aurore Dumond Bourie
Frontiers in Endocrinology, 2022, 13, pp.1035159. ⟨10.3389/fendo.2022.1035159⟩
Article dans une revueAbstractCircular RNAs (circRNAs) are class of non-coding RNA, which are characterized by a covalently closed loop structure. Functionally they can act on cellular physiology, notably by sponging microRNAs (miR), regulating gene expression or interacting with binding protein. To date, circRNAs might represent an interesting, underexploited avenue for new target discovery for therapeutic applications, especially in the liver. The first characteristic of non-alcoholic fatty liver disease (NAFLD) is hepatic cholesterol accumulation, followed by its advanced form of the affection, nonalcoholic steatohepatitis (NASH), due to the occurrence of lobular inflammation, irreversible fibrosis, and in some cases hepatocellular carcinoma (HCC). Therefore, studies have investigated the importance of the dysregulation of circRNAs in the onset of metabolic disorders. In this review, we summarize the potential role of circRNAs in the development of metabolic diseases associated with the liver such as NAFLD or NASH, and their potential to become therapeutic strategies for these pathologies.
Efficacy of virtual reality hypnosis versus conscious sedation with nitrous oxide in the management of dental anxiety in pediatric dentistry: protocol for a prospective randomized controlled trial
Nhat Minh Do, Marie-Cécile Maniere, François Lefebvre, François Clauss
Trials, 2021, 26 (1), pp.201. ⟨10.1186/s13063-025-08849-z⟩
Article dans une revueAbstractBackground: Dental anxiety is defined as a persistent and excessive fear of dental treatment. It often leads to interruptions during procedures and, frequently, avoidance of dental care. For patients over the age of 7, nitrous oxide-oxygen inhaled sedation (NOIS) represents one of the most effective and well-established pharmacological approaches to reducing anxiety and pain during dental treatment. Meanwhile, medical hypnosis offers an interesting non-pharmacological alternative by inducing a hypnotic state, potentially serving as a means of sedation to alleviate anxiety or pain. The advancement of virtual reality (VR) technology makes medical hypnosis more accessible to dental practitioners, yielding promising outcomes. To our knowledge, no clinical trial has evaluated the efficacy of medical hypnosis associated with 3D immersive virtual reality devices for pediatric dental procedures. Methods: This prospective, controlled, single-blind clinical study including anxious patients aged 7 to 10 years old aims to demonstrate non-inferiority of virtual reality approach. Using a split-mouth design, each patient will attend two separate visits for two comparable conservative dental procedures. At the first procedure, they will randomly be assigned to receive either hypnosis via VR or NOIS. The alternative method will be administered during the second visit. The primary outcome is the sedation success based on the completion of the dental procedure. A score of 3 or higher on the Modified Venham Scale noted more than twice ends the session and qualifies as a sedation failure. The secondary outcomes involve assessing children's tolerance and the temperament influence on sedation success. Discussion: This study will evaluate the efficacy of a novel non-pharmacological sedation for the management of anxious children in a dental setting. The results may help practitioners choose the appropriate anxiolytic therapeutic option, based on different psychometric and temperament parameters.
Phosphorus Supplementation Mitigates Perivascular Adipose Inflammation–Induced Cardiovascular Consequences in Early Metabolic Impairment
Haneen Dwaib, Ghina Ajouz, Ibrahim Alzaim, Rim Rafeh, Ali Mroueh, Nahed Mougharbil, Marie‐elizabeth Ragi, Marwan Refaat, Omar Obeid, Ahmed El-Yazbi
Journal of the American Heart Association, 2021, 10 (24), ⟨10.1161/JAHA.121.023227⟩
Article dans une revueAbstractThe complexity of the interaction between metabolic dysfunction and cardiovascular complications has long been recognized to extend beyond simple perturbations of blood glucose levels. Yet, structured interventions targeting the root pathologies are not forthcoming. Growing evidence implicates the inflammatory changes occurring in perivascular adipose tissue (PVAT) as early instigators of cardiovascular deterioration. Methods and Results We used a nonobese prediabetic rat model with localized PVAT inflammation induced by hypercaloric diet feeding, which dilutes inorganic phosphorus (Pi) to energy ratio by 50%, to investigate whether Pi supplementation ameliorates the early metabolic impairment. A 12‐week Pi supplementation at concentrations equivalent to and twice as much as that in the control diet was performed. The localized PVAT inflammation was reversed in a dose‐dependent manner. The increased expression of UCP1 (uncoupling protein1), HIF‐1α (hypoxia inducible factor‐1α), and IL‐1β (interleukin‐1β), representing the hallmark of PVAT inflammation in this rat model, were reversed, with normalization of PVAT macrophage polarization. Pi supplementation restored the metabolic efficiency consistent with its putative role as an UCP1 inhibitor. Alongside, parasympathetic autonomic and cerebrovascular dysfunction function observed in the prediabetic model was reversed, together with the mitigation of multiple molecular and histological cardiovascular damage markers. Significantly, a Pi‐deficient control diet neither induced PVAT inflammation nor cardiovascular dysfunction, whereas Pi reinstatement in the diet after a 10‐week exposure to a hypercaloric low‐Pi diet ameliorated the dysfunction. Conclusions Our present results propose Pi supplementation as a simple intervention to reverse PVAT inflammation and its early cardiovascular consequences, possibly through the interference with hypercaloric‐induced increase in UCP1 expression/activity.
Predicting 90-day survival of patients with COVID-19: Survival of Severely Ill COVID (SOSIC) scores
Matthieu Schmidt, Bertrand Guidet, Alexandre Demoule, Maharajah Ponnaiah, Muriel Fartoukh, Louis Puybasset, Alain Combes, David Hajage, Alain Mercat, Pierre Asfar, François Beloncle, Julien Demiselle, Tài Pham, Arthur Pavot, Xavier Monnet, Christian Richard, Alexandre Demoule, Martin Dres, Julien Mayaux, Alexandra Beurton, Cédric Daubin, Richard Descamps, Aurélie Joret, Damien Du Cheyron, Frédéric Pene, Jean-Daniel Chiche, Mathieu Jozwiak, Paul Jaubert, Guillaume Voiriot, Muriel Fartoukh, Marion Teulier, Clarisse Blayau, Erwen L’her, Cécile Aubron, Laetitia Bodenes, Nicolas Ferriere, Johann Auchabie, Anthony Le Meur, Sylvain Pignal, Thierry Mazzoni, Jean-Pierre Quenot, Pascal Andreu, Jean-Baptiste Roudau, Marie Labruyère, Saad Nseir, Sébastien Preau, Julien Poissy, Daniel Mathieu, Sarah Benhamida, Rémi Paulet, Nicolas Roucaud, Martial Thyrault, Florence Daviet, Sami Hraiech, Gabriel Parzy, Aude Sylvestre, Sébastien Jochmans, Anne-Laure Bouilland, Mehran Monchi, Marc Danguy Des Déserts, Quentin Mathais, Gwendoline Rager, Pierre Pasquier, Reignier Jean, Seguin Amélie, Garret Charlotte, Canet Emmanuel, Jean Dellamonica, Clément Saccheri, Romain Lombardi, Yanis Kouchit, Sophie Jacquier, Armelle Mathonnet, Mai-Ahn Nay, Isabelle Runge, Frédéric Martino, Laure Flurin, Amélie Rolle, Michel Carles, Rémi Coudroy, Arnaud Thille, Jean-Pierre Frat, Maeva Rodriguez, Pascal Beuret, Audrey Tientcheu, Arthur Vincent, Florian Michelin, Fabienne Tamion, Dorothée Carpentier, Déborah Boyer, Christophe Girault, Valérie Gissot, Stéphan Ehrmann, Charlotte Salmon Gandonniere, Djlali Elaroussi, Agathe Delbove, Yannick Fedun, Julien Huntzinger, Eddy Lebas, Grâce Kisoka, Céline Grégoire, Stella Marchetta, Bernard Lambermont, Laurent Argaud, Thomas Baudry, Pierre-Jean Bertrand, Auguste Dargent, Christophe Guitton, Nicolas Chudeau, Mickaël Landais, Cédric Darreau, Alexis Ferre, Antoine Gros, Guillaume Lacave, Fabrice Bruneel, Mathilde Neuville, Jérôme Devaquet, Guillaume Tachon, Richard Gallot, Riad Chelha, Arnaud Galbois, Anne Jallot, Ludivine Chalumeau Lemoine, Khaldoun Kuteifan, Valentin Pointurier, Louise-Marie Jandeaux, Joy Mootien, Charles Damoisel, Benjamin Sztrymf, Matthieu Schmidt, Alain Combes, Juliette Chommeloux, Charles-Edouard Luyt, Frédérique Schortgen, Leon Rusel, Camille Jung, Florent Gobert, Damien Vimpere, Lionel Lamhaut, Bertrand Sauneuf, Liliane Charrrier, Julien Calus, Isabelle Desmeules, Benoît Painvin, Jean-Marc Tadie, Vincent Castelain, Baptiste Michard, Jean-Etienne Herbrecht, Mathieu Baldacini, Nicolas Weiss, Sophie Demeret, Clémence Marois, Benjamin Rohaut, Pierre-Henri Moury, Anne-Charlotte Savida, Emmanuel Couadau, Mathieu Série, Nica Alexandru, Cédric Bruel, Candice Fontaine, Sonia Garrigou, Juliette Courtiade Mahler, Maxime Leclerc, Michel Ramakers, Pierre Garçon, Nicole Massou, Ly van Vong, Juliane Sen, Nolwenn Lucas, Franck Chemouni, Annabelle Stoclin, Alexandre Avenel, Henri Faure, Angélie Gentilhomme, Sylvie Ricome, Paul Abraham, Céline Monard, Julien Textoris, Thomas Rimmele, Florent Montini, Gabriel Lejour, Thierry Lazard, Isabelle Etienney, Younes Kerroumi, Claire Dupuis, Marine Bereiziat, Elisabeth Coupez, François Thouy, Clément Hoffmann, Nicolas Donat, Anne Chrisment, Rose-Marie Blot, Antoine Kimmoun, Audrey Jacquot, Matthieu Mattei, Bruno Levy, Ramin Ravan, Loïc Dopeux, Jean-Mathias Liteaudon, Delphine Roux, Brice Rey, Radu Anghel, Deborah Schenesse, Vincent Gevrey, Jermy Castanera, Philippe Petua, Benjamin Madeux, Otto Hartman, Michael Piagnerelli, Anne Joosten, Cinderella Noel, Patrick Biston, Thibaut Noel, Gurvan Bouar, Messabi Boukhanza, Elsa Demarest, Marie-France Bajolet, Nathanaël Charrier, Audrey Quenet, Cécile Zylberfajn, Nicolas Dufour, Buno Mégarbane, Sqébastian Voicu, Nicolas Deye, Isabelle Malissin, François Legay, Matthieu Debarre, Nicolas Barbarot, Pierre Fillatre, Bertrand Delord, Thomas Laterrade, Tahar Saghi, Wilfried Pujol, Pierre-Julien Cungi, Pierre Esnault, Mickael Cardinale, Vivien Hong Tuan Ha, Grégory Fleury, Marie-Ange Brou, Daniel Zafimahazo, David Tran-Van, Patrick Avargues, Lisa Carenco, Nicolas Robin, Alexandre Ouali, Lucie Houdou, Christophe Le Terrier, Noémie Suh, Steve Primmaz, Jérome Pugin, Emmanuel Weiss, Tobias Gauss, Jean-Denis Moyer, Catherine Paugam Burtz, Béatrice La Combe, Rolland Smonig, Jade Violleau, Pauline Cailliez, Jonathan Chelly, Antoine Marchalot, Cécile Saladin, Christelle Bigot, Pierre-Marie Fayolle, Jules Fatséas, Amr Ibrahim, Dabor Resiere, Rabih Hage, Clémentine Cholet, Marie Cantier, Pierre Trouiler, Philippe Montravers, Brice Lortat-Jacob, Sebastien Tanaka, Alexy Tran Dinh, Jacques Duranteau, Anatole Harrois, Guillaume Dubreuil, Marie Werner, Anne Godier, Sophie Hamada, Diane Zlotnik, Hélène Nougue, Armand Mekontso-Dessap, Guillaume Carteaux, Keyvan Razazi, Nicolas de Prost, Nicolas Mongardon, Olivier Langeron, Eric Levesque, Arié Attias, Charles de Roquetaillade, Benjamin Chousterman, Alexandre Mebazaa, Etienne Gayat, Marc Garnier, Emmanuel Pardo, Lea Satre-Buisson, Christophe Gutton, Elise Yvin, Clémence Marcault, Elie Azoulay, Michael Darmon, Hafid Ait Oufella, Geoffroy Hariri, Tomas Urbina, Sandie Mazerand, Nicholas Heming, Francesca Santi, Pierre Moine, Djillali Annane, Adrien Bouglé, Edris Omar, Aymeric Lancelot, Emmanuelle Begot, Gaétan Plantefeve, Damien Contou, Hervé Mentec, Olivier Pajot, Stanislas Faguer, Olivier Cointault, Laurence Lavayssiere, Marie-Béatrice Nogier, Matthieu Jamme, Claire Pichereau, Jan Hayon, Hervé Outin, François Dépret, Maxime Coutrot, Maité Chaussard, Lucie Guillemet, Pierre Goffin, Romain Thouny, Julien Guntz, Laurent Jadot, Romain Persichini, Vanessa Jean-Michel, Hugues Georges, Thomas Caulier, Gaël Pradel, Marie-Hélène Hausermann, Thi My Hue Nguyen-Valat, Michel Boudinaud, Emmanuel Vivier, Sylvène Rosseli, Gaël Bourdin, Christian Pommier, Marc Vinclair, Simon Poignant, Sandrine Mons, Wulfran Bougouin, Franklin Bruna, Quentin Maestraggi, Christian Roth, Laurent Bitker, François Dhelft, Justine Bonnet-Chateau, Mathilde Filippelli, Tristan Morichau-Beauchant, Stéphane Thierry, Charlotte Le Roy, Mélanie Saint Jouan, Bruno Goncalves, Aurélien Mazeraud, Matthieu Daniel, Tarek Sharshar, Cyril Cadoz, Rostane Gaci, Sébastien Gette, Guillaune Louis, Sophe-Caroline Sacleux, Marie-Amélie Ordan, Aurélie Cravoisy, Marie Conrad, Guilhem Courte, Sébastien Gibot, Younès Benzidi, Claudia Casella, Laurent Serpin, Jean-Lou Setti, Marie-Catherine Besse, Anna Bourreau, Jérôme Pillot, Caroline Rivera, Camille Vinclair, Marie-Aline Robaux, Chloé Achino, Marie-Charlotte Delignette, Tessa Mazard, Frédéric Aubrun, Bruno Bouchet, Aurélien Frérou, Laura Muller, Charlotte Quentin, Samuel Degoul, Xavier Stihle, Claude Sumian, Nicoletta Bergero, Bernard Lanaspre, Hervé Quintard, Eve Marie Maiziere, Pierre-Yves Egreteau, Guillaume Leloup, Florin Berteau, Marjolaine Cottrel, Marie Bouteloup, Matthieu Jeannot, Quentin Blanc, Julien Saison, Isabelle Geneau, Romaric Grenot, Abdel Ouchike, Pascal Hazera, Anne-Lyse Masse, Suela Demiri, Corinne Vezinet, Elodie Baron, Deborah Benchetrit, Antoine Monsel, Grégoire Trebbia, Emmanuelle Schaack, Raphaël Lepecq, Mathieu Bobet, Christophe Vinsonneau, Thibault Dekeyser, Quentin Delforge, Imen Rahmani, Bérengère Vivet, Jonathan Paillot, Lucie Hierle, Claire Chaignat, Sarah Valette, Benoït Her, Jennifier Brunet, Mathieu Page, Fabienne Boiste, Anthony Collin, Florent Bavozet, Aude Garin, Mohamed Dlala, Kais Mhamdi, Bassem Beilouny, Alexandra Lavalard, Severine Perez, Benoit Veber, Pierre-Gildas Guitard, Philippe Gouin, Anna Lamacz, Fabienne Plouvier, Bertrand Delaborde, Aïssa Kherchache, Amina Chaalal, Jean-Damien Ricard, Marc Amouretti, Santiago Freita-Ramos, Damien Roux, Jean-Michel Constantin, Mona Assefi, Marine Lecore, Agathe Selves, Florian Prevost, Christian Lamer, Ruiying Shi, Lyes Knani, Sébastien Pili Floury, Lucie Vettoretti, Michael Levy, Lucile Marsac, Stéphane Dauger, Sophie Guilmin-Crépon, Hadrien Winiszewski, Gael Piton, Thibaud Soumagne, Gilles Capellier, Jean-Baptiste Putegnat, Frédérique Bayle, Maya Perrou, Ghyslaine Thao, Guillaume Géri, Cyril Charron, Xavier Repessé, Antoine Vieillard-Baron, Mathieu Guilbart, Pierre-Alexandre Roger, Sébastien Hinard, Pierre-Yves Macq, Kevin Chaulier, Sylvie Goutte, Patrick Chillet, Anaïs Pitta, Barbara Darjent, Amandine Bruneau, Sigismond Lasocki, Maxime Leger, Soizic Gergaud, Pierre Lemarie, Nicolas Terzi, Carole Schwebel, Anaïs Dartevel, Louis-Marie Galerneau, Jean-Luc Diehl, Caroline Hauw-Berlemont, Nicolas Péron, Emmanuel Guérot, Abolfazl Mohebbi Amoli, Michel Benhamou, Jean-Pierre Deyme, Olivier Andremont, Diane Lena, Julien Cady, Arnaud Causeret, Arnaud de la Chapelle, Christophe Cracco, Stéphane Rouleau, David Schnell, Camille Foucault, Cécile Lory, Thibault Chapelle, Vincent Bruckert, Julie Garcia, Abdlazize Sahraoui, Nathalie Abbosh, Caroline Bornstain, Pierre Pernet, Florent Poirson, Ahmed Pasem, Philippe Karoubi, Virginie Poupinel, Caroline Gauthier, François Bouniol, Philippe Feuchere, Florent Bavozet, Anne Heron, Serge Carreira, Malo Emery, Anne Sophie Le Floch, Luana Giovannangeli, Nicolas Herzog, Christophe Giacardi, Thibaut Baudic, Chloé Thill, Said Lebbah, Jessica Palmyre, Florence Tubach, David Hajage, Nicolas Bonnet, Nathan Ebstein, Stéphane Gaudry, Yves Cohen, Julie Noublanche, Olivier Lesieur, Arnaud Sément, Isabel Roca-Cerezo, Michel Pascal, Nesrine Sma, Gwenhaël Colin, Jean-Claude Lacherade, Gauthier Bionz, Natacha Maquigneau, Pierre Bouzat, Michel Durand, Marie-Christine Hérault, Jean-Francois Payen
Annals of Intensive Care, 2021, 11 (1), pp.170. ⟨10.1186/s13613-021-00956-9⟩
Article dans une revueAbstract<b>Background: </b>Predicting outcomes of critically ill intensive care unit (ICU) patients with coronavirus-19 disease (COVID-19) is a major challenge to avoid futile, and prolonged ICU stays. <b>Methods: </b>The objective was to develop predictive survival models for patients with COVID-19 after 1-to-2 weeks in ICU. Based on the COVID-ICU cohort, which prospectively collected characteristics, management, and outcomes of critically ill patients with COVID-19. Machine learning was used to develop dynamic, clinically useful models able to predict 90-day mortality using ICU data collected on day (D) 1, D7 or D14. <b>Results:</b> Survival of Severely Ill COVID (SOSIC)-1, SOSIC-7, and SOSIC-14 scores were constructed with 4244, 2877, and 1349 patients, respectively, randomly assigned to development or test datasets. The three models selected 15 ICU-entry variables recorded on D1, D7, or D14. Cardiovascular, renal, and pulmonary functions on prediction D7 or D14 were among the most heavily weighted inputs for both models. For the test dataset, SOSIC-7's area under the ROC curve was slightly higher (0.80 [0.74-0.86]) than those for SOSIC-1 (0.76 [0.71-0.81]) and SOSIC-14 (0.76 [0.68-0.83]). Similarly, SOSIC-1 and SOSIC-7 had excellent calibration curves, with similar Brier scores for the three models. <b>Conclusion: </b>The SOSIC scores showed that entering 15 to 27 baseline and dynamic clinical parameters into an automatable XGBoost algorithm can potentially accurately predict the likely 90-day mortality post-ICU admission (sosic.shinyapps.io/shiny). Although external SOSIC-score validation is still needed, it is an additional tool to strengthen decisions about life-sustaining treatments and informing family members of likely prognosis.
Comparative effectiveness of nonsurgical interventions in the treatment of patients with knee osteoarthritis
Moustafa Naja, Gabriel Fernandez de Grado, Henri Favreau, Dominique Scipioni, Nadia Benkirane-Jessel, Anne-Marie Musset, Damien Offner
Medicine, 2021, 100 (49), ⟨10.1097/md.0000000000028067⟩
Article dans une revueAbstractBackground: To find out, based on the available recent randomized controlled trials (RCTs), if the nonsurgical interventions commonly used for knee osteoarthritis patients are valid and quantify their efficiency. Methods: The database of MEDLINE and EMBASE were searched for RCTs evaluating nonsurgical treatment strategies on patients with mild to moderate knee osteoarthritis. A Bayesian random-effects network meta-analysis was performed. The primary outcome was the mean change from baseline in the Western Ontario and McMaster university (WOMAC) total score at 12 months. Raw mean differences with 95% credibility intervals were calculated. Treatments were ranked by probabilities of each treatment to be the best. Results: Thirteen trials assessed 7 strategies with WOMAC at 12 months: injection of platelet rich plasma (PRP), corticosteroids, mesenchymal stem cells (MSCs), hyaluronic acid, ozone, administration of nonsteroidal anti-inflammatory drugs with or without the association of physiotherapy. For treatment-specific effect size, a greater association with WOMAC decrease was found significantly for MSCs (mean difference, À28.0 [95% CrI, À32.9 to À22.4]) and PRP (mean difference, À19.9 [95% CrI, À24.1 to À15.8]). Rank probabilities among the treatments indicated that MSCs had a much higher probability (P = .91) of being the best treatment compared with other treatments, while PRP ranked as the second-best treatment (P = .89). Conclusion: In this systematic review and network meta-analysis, the outcomes of treatments using MSCs and PRP for the management of knee osteoarthritis were associated with long-term improvements in pain and function. More high quality RCTs would be needed to confirm the efficiency of MSCs and PRP for the treatment of patients with knee osteoarthritis.
Frequent, quantitative bone planar scintigraphy for determination of bone anabolism in growing mice
Ariane Zaloszyc, Claus Peter Schmitt, Amira Sayeh, Laetitia Higel, Catherine-Isabelle Gros, Fabien Bornert, Gaëlle Aubertin-Kirch, Jean-Philippe Dillenseger, Christian Goetz, André Constantinesco, Michel Fischbach, Seiamak Bahram, Philippe Choquet
PeerJ, 2021, 9, pp.e12355. ⟨10.7717/peerj.12355⟩
Article dans une revueAbstractBackground: To provide insight into bone turnover, quantitative measurements of bone remodeling are required. Radionuclide studies are widely used in clinical care, but have been rarely used in the exploration of the bone in preclinical studies. We describe a bone planar scintigraphy method for frequent assessment of bone activity in mice across the growing period. Since repeated venous radiotracer injections are hardly feasible in mice, we investigated the subcutaneous route.Methods: Repeated 99mTc-hydroxymethylene diphosphonate (HMDP) tracer bone planar scintigraphy studies of the knee region and µCT to measure femur growth rate were performed in eight mice between week 6 and week 27 of life, i.e., during their growth period. Three independent investigators assessed the regions of interest (ROI). An index was calculated based on the counts in knees ROI (normalized by pixels and seconds), corrected for the activity administered, the decay between administration and imaging, and individual weights.Results: A total of 93 scintigraphy studies and 85 µCT were performed. Repeated subcutaneous tracer injections were well tolerated and allowed for adequate radionuclide studies. Mean scintigraphic indexes in the knees ROI decreased from 87.4 ± 2.6 × 10-6 counts s-1 pixel-1 MBq-1 g-1 at week 6 to 15.0 ± 3.3 × 10-6 counts s-1 pixel-1 MBq-1 g-1 at week 27. The time constant of the fitted exponential decay was equal to 23.5 days. As control mean femur length assessed by µCT increased from 12.2 ± 0.8 mm at week 6 to 15.8 ± 0.2 mm at week 22. The time constant of the fitted Gompertz law was equal to 26.7 days. A correlation index of -0.97 was found between femur growth and decrease of bone tracer activity count between week 6 and 24.Conclusion: This methodological study demonstrates the potential of repeated bone planar scintigraphy in growing mice, with subcutaneous route for tracer administration, for quantitative assessment of bone remodeling.
Fluorizoline Blocks the Interaction between Prohibitin-2 and γ -Glutamylcyclotransferase and Induces p21 Waf1/Cip1 Expression in MCF7 Breast Cancer Cells
Hiroko Takagi, Chiami Moyama, Keiko Taniguchi, Kota Ando, Ryohei Matsuda, Shota Ando, Hiromi Ii, Susumu Kageyama, Akihiro Kawauchi, Nora Chouha, Laurent Désaubry, Susumu Nakata
Molecular Pharmacology, 2021, 101 (2), pp.78-86. ⟨10.1124/molpharm.121.000334⟩
Article dans une revueAbstractProhibitin-2 (PHB2) is a scaffold protein that has pleiotropic functions, which include interacting with γ-glutamylcyclotransferase (GGCT) in the cytoplasm and repressing the transcriptional activities of the p21Waf1/Cip (p21) gene in the nucleus. The cytotoxic drug fluorizoline binds to PHB1/2 and exerts antiproliferative actions on cancer cells. However, the precise mechanism underlying the antiproliferative effects of fluorizoline is not fully elucidated. In the present study, we first show that fluorizoline induces p21 expression in several human cancer cell lines, including MCF7 breast cancer cells. Treatment of MCF7 cells with fluorizoline suppressed proliferation and prevented cells from entering into the DNA synthesis phase. Knockdown of p21 rescued the suppressed proliferation, indicating that fluorizoline inhibited MCF7 cell growth via the induction of p21. Overexpression of PHB2 in MCF7 cells prevented the induction of p21 expression by fluorizoline and restored the antiproliferative effects and blockade of cell cycle progression. Moreover, treatment of MCF7 cells with fluorizoline inhibited the interaction between endogenous PHB2 and GGCT proteins and reduced the level of nuclear localization of PHB2 proteins. These results indicate that targeting PHB2 with fluorizoline induces the expression of p21 and consequently blocks proliferation of cancer cells. SIGNIFICANCE STATEMENT: This study shows that fluorizoline may be a promising novel anticancer drug candidate that induces p21 expression and blocks cell-cycle progression in human cancer cell lines. In addition, we show that fluorizoline inhibits the interaction between PHB2 and GGCT and reduces the nuclear localization of PHB2 proteins.
Biodegradable magnesium fixation screw for barrier membranes used in guided bone regeneration
Željka Perić Kačarević, Patrick Rider, Akiva Elad, Drazen Tadic, Daniel Rothamel, Gerrit Sauer, Fabien Bornert, Peter Windisch, Dávid Botond Hangyási, Balint Molnar, Till Kämmerer, Bernhard Hesse, Emely Bortel, Marco Bartosch, Frank Witte
Bioactive Materials, 2021, 14, pp.15 - 30. ⟨10.1016/j.bioactmat.2021.10.036⟩
Article dans une revueAbstractAn ideal fixation system for guided bone (GBR) regeneration in oral surgery must fulfil several criteria that includes the provision of adequate mechanical fixation, complete resorption when no longer needed, complete replacement by bone, as well as be biocompatible and have a good clinical manageability. For the first time, a biodegradable magnesium fixation screw made of the magnesium alloy WZM211 with a MgF 2 coating has been designed and tested to fulfill these criteria. Adequate mechanical fixation was shown for the magnesium fixation screw in several benchtop tests that directly compared the magnesium fixation screw with an equivalent polymeric resorbable device. Results demonstrated slightly superior mechanical properties of the magnesium device in comparison to the polymeric device even after 4 weeks of degradation. Biocompatibility of the magnesium fixation screw was demonstrated in several in vitro and in vivo tests. Degradation of the magnesium screw was investigated in in vitro and in vivo tests, where it was found that the screw is resorbed slowly and completely after 52 weeks, providing adequate fixation in the early critical healing phase. Overall, the magnesium fixation screw demonstrates all of the key properties required for an ideal fixation screw of membranes used in guided bone regeneration (GBR) surgeries.</p><p>; GBR, Guided Bone Regeneration.
Is Lanreotide Really Useful in High Output Stoma? Comparison between Lanreotide to Conventional Antidiarrheal Treatment Alone
Yannis Mesli, Lise Holterbach, Jean-Baptiste Delhorme, Zaher Lakkis, Pablo Ortega-Deballon, Sophie Deguelte, Serge Rohr, Cecile Brigand, Nicolas Meyer, Benoit Romain
Journal of Investigative Surgery, 2021, 34 (12), pp.1312-1316. ⟨10.1080/08941939.2020.1800871⟩
Article dans une revueAbstractBACKGROUND: The incidence of high-output stoma (HOS) was reported to be approximately 3 to 16% in the literature, and HOS can cause dehydration. This complication is often severe enough to warrant hospital readmission and may result in renal failure. The aim of this study was to show a decrease of 50% in ileostomy output in the experimental arm using lanreotide treatment. METHODS: Patients with an ileostomy output ≥ 1.5 l/24 hours were included in this prospective, open, multicentre randomized trial. Patients were randomly allocated between treatment arms with either lanreotide (LAN) and antidiarrhoeal treatments (TAD) (LAN-TAD group) or antidiarrhoeal treatments only (TADS group). The primary outcome was ileostomy output after 72 days. The secondary endpoints were ileostomy output during the first 6 days, blood urea and creatinine values, hospital length of stay and serious adverse events. RESULTS: In the per-protocol analysis, there were nine patients in the control group (TADS) and six patients in the experimental group (TAD-LAN group). The stoma outputs at Day 3 (D3) in the experimental and control groups were 1,900 ± 855.7 mL and 1,728.6 ± 845.5 mL, respectively (p = 0.2). No differences were found concerning stoma output at D6, renal function, or hospital length of stay between the two groups. CONCLUSION: The trial was prematurely stopped due to the low number of patients included. The question of the usefulness of somatostatin analogues in HOS persists, especially as the cost of this treatment is high, and there is a lack of evidence of its effectiveness.
Longitudinal changes in compliance, oxygenation and ventilatory ratio in COVID-19 versus non-COVID-19 pulmonary acute respiratory distress syndrome
François Beloncle, Antoine Studer, Valérie Seegers, Jean-Christophe Richard, Christophe Desprez, Nicolas Fage, Hamid Merdji, Bertrand Pavlovsky, Julie Helms, Sibylle Cunat, Satar Mortaza, Julien Demiselle, Laurent Brochard, Alain Mercat, Ferhat Meziani
Critical Care, 2021, 25 (1), pp.248. ⟨10.1186/s13054-021-03665-8⟩
Article dans une revueAbstractAbstract Background Differences in physiology of ARDS have been described between COVID-19 and non-COVID-19 patients. This study aimed to compare initial values and longitudinal changes in respiratory system compliance ( C RS ), oxygenation parameters and ventilatory ratio (VR) in patients with COVID-19 and non-COVID-19 pulmonary ARDS matched on oxygenation. Methods 135 patients with COVID-19 ARDS from two centers were included in a physiological study; 767 non-COVID-19 ARDS from a clinical trial were used for the purpose of at least 1:2 matching. A propensity-matching was based on age, severity score, oxygenation, positive end-expiratory pressure (PEEP) and pulmonary cause of ARDS and allowed to include 112 COVID-19 and 198 non-COVID pulmonary ARDS. Results The two groups were similar on initial oxygenation. COVID-19 patients had a higher body mass index, higher C RS at day 1 (median [IQR], 35 [28–44] vs 32 [26–38] ml cmH 2 O −1 , p = 0.037). At day 1, C RS was correlated with oxygenation only in non-COVID-19 patients; 61.6% and 68.2% of COVID-19 and non-COVID-19 pulmonary ARDS were still ventilated at day 7 ( p = 0.241). Oxygenation became lower in COVID-19 than in non-COVID-19 patients at days 3 and 7, while C RS became similar. VR was lower at day 1 in COVID-19 than in non-COVID-19 patients but increased from day 1 to 7 only in COVID-19 patients. VR was higher at days 1, 3 and 7 in the COVID-19 patients ventilated using heat and moisture exchangers compared to heated humidifiers. After adjustment on PaO 2 /FiO 2 , PEEP and humidification device, C RS and VR were found not different between COVID-19 and non-COVID-19 patients at day 7. Day-28 mortality did not differ between COVID-19 and non-COVID-19 patients (25.9% and 23.7%, respectively, p = 0.666). Conclusions For a similar initial oxygenation, COVID-19 ARDS initially differs from classical ARDS by a higher C RS , dissociated from oxygenation. C RS become similar for patients remaining on mechanical ventilation during the first week of evolution, but oxygenation becomes lower in COVID-19 patients. Trial registration : clinicaltrials.gov NCT04385004
Noninvasive ventilation vs. high-flow nasal cannula oxygen for preoxygenation before intubation in patients with obesity: a post hoc analysis of a randomized controlled trial
Maeva Rodriguez, Stéphanie Ragot, Rémi Coudroy, Jean-Pierre Quenot, Philippe Vignon, Jean-Marie Forel, Alexandre Demoule, Jean-Paul Mira, Jean-Damien Ricard, Saad Nseir, Gwenhael Colin, Bertrand Pons, Pierre-Eric Danin, Jérome Devaquet, Gwenael Prat, Hamid Merdji, Franck Petitpas, Emmanuel Vivier, Armand Mekontso-Dessap, Mai-Anh Nay, Pierre Asfar, Jean Dellamonica, Laurent Argaud, Stephan Ehrmann, Muriel Fartoukh, Christophe Girault, René Robert, Arnaud Thille, Jean-Pierre Frat, Delphine Chatellier, Florence Boissier, Anne Veinstein, Claire Dahyot-Fizelier, Auguste Dargent, Audrey Large, Emmanuelle Begot, Claire Mancia, Maxence Decavele, Martin Dres, Samuel Lehingue, Laurent Papazian, Marine Paul, Nathalie Marin, Matthieu Le Meur, Mohammed Laissy, Anahita Rouzé, Matthieu Henry-Lagarrigue, Aihem Yehia, Frédéric Martino, Charles Cerf, Pierre Bailly, Julie Helms, Jean Baptiste Putegnat, Keyvan Razazi, Thierry Boulain, Séverin Cabasson, Florent Wallet, Kada Klouche, Frédéric Bellec
Annals of Intensive Care, 2021, 11 (1), pp.114. ⟨10.1186/s13613-021-00892-8⟩
Article dans une revueAbstractAbstract Background Critically ill patients with obesity may have an increased risk of difficult intubation and subsequent severe hypoxemia. We hypothesized that pre-oxygenation with noninvasive ventilation before intubation as compared with high-flow nasal cannula oxygen may decrease the risk of severe hypoxemia in patients with obesity. Methods Post hoc subgroup analysis of critically ill patients with obesity (body mass index ≥ 30 kg·m −2 ) from a multicenter randomized controlled trial comparing preoxygenation with noninvasive ventilation and high-flow nasal oxygen before intubation of patients with acute hypoxemic respiratory failure (PaO 2 /FiO 2 < 300 mm Hg). The primary outcome was the occurrence of severe hypoxemia (pulse oximetry < 80%) during the intubation procedure. Results Among the 313 patients included in the original trial, 91 (29%) had obesity with a mean body mass index of 35 ± 5 kg·m −2 . Patients with obesity were more likely to experience an episode of severe hypoxemia during intubation procedure than patients without obesity: 34% (31/91) vs. 22% (49/222); difference, 12%; 95% CI 1 to 23%; P = 0.03. Among patients with obesity, 40 received preoxygenation with noninvasive ventilation and 51 with high-flow nasal oxygen. Severe hypoxemia occurred in 15 patients (37%) with noninvasive ventilation and 16 patients (31%) with high-flow nasal oxygen (difference, 6%; 95% CI − 13 to 25%; P = 0.54). The lowest pulse oximetry values during intubation procedure were 87% [interquartile range, 77–93] with noninvasive ventilation and 86% [78–92] with high-flow nasal oxygen ( P = 0.98). After multivariable analysis, factors independently associated with severe hypoxemia in patients with obesity were intubation difficulty scale > 5 points and respiratory primary failure as reason for admission. Conclusions Patients with obesity and acute hypoxemic respiratory failure had an increased risk of severe hypoxemia during intubation procedure as compared to patients without obesity. However, preoxygenation with noninvasive ventilation may not reduce this risk compared with high-flow nasal oxygen. Trial registration Clinical trial number: NCT02668458 ( http://www.clinicaltrials.gov )
Septic shock as a trigger of arterial stress-induced premature senescence: A new pathway involved in the post sepsis long-term cardiovascular complications
Hamid Merdji, Mohamad Kassem, Louise Chomel, Raphaël Clere-Jehl, Julie Helms, Kei Kurihara, Ahmed Bey Chaker, Cyril Auger, Valérie Schini-Kerth, Florence Toti, Ferhat Meziani
Vascular Pharmacology, 2021, pp.106922. ⟨10.1016/j.vph.2021.106922⟩
Article dans une revueAbstractBackground: Major adverse cardiovascular events among sepsis survivors is an emerging health issue. Because endothelial senescence leads to vascular dysfunction and atherothrombosis, sepsis could be associated to vascular stress-induced premature senescence and thus with long-term cardiovascular events. Materials & methods: Adult Wistar male rats were submitted to cecal ligation and puncture, or a SHAM operation. Markers of inflammation, oxidative stress and endothelial senescence were assessed at 3, 7 and 90 days (D), and vascular reactivity was assessed in conductance and resistance vessels at D90. Expression of proteins involved in senescence and inflammation was assessed by Western blot analysis and confocal microscopy, oxidative stress by dihydroethidium probing. Results: Pro-inflammatory endothelial ICAM-1 and VCAM-1 were up-regulated by three-fold in CLP vs. SHAM at D7 and remained elevated at D90. Oxidative stress followed a similar pattern but was detected in the whole vascular wall. Sepsis accelerated premature senescence in aorta vascular tissue as shown by the significant up-regulation of p53 and down-stream p21 and p16 senescent markers at D7, values peaking at D90 whereas the absence of significant variation in activated caspase-3 confirmed p53 as a prime inducer of senescence. In addition, p53 was mainly expressed in the endothelium. Sepsis-induced long-term vascular dysfunction was confirmed in aorta and main mesenteric artery, with a major alteration of the endothelial-dependent nitric oxide pathway. Conclusions: Septic shock-induced long-term vascular dysfunction is associated with endothelial and vascular senescence. Our model could prove useful for investigating senotherapies aiming at reducing long-term cardiovascular consequences of septic shock.
Mental health and stress among ICU healthcare professionals in France according to intensity of the COVID-19 epidemic
A. Laurent, Alicia Fournier, Florent Lheureux, Guillaume Louis, Saad Nseir, Gwenaelle Jacq, Cyril Goulenok, Grégoire Muller, Julio Badie, Bélaïd Bouhemad, Marjolaine Georges, Paul-Michel Mertes, Hamid Merdji, Vincent Castelain, Caroline Abdulmalak, Olivier Lesieur, Gaëtan Plantefeve, Jean-Claude Lacherade, Jean-Philippe Rigaud, Nicholas Sedillot, Damien Roux, Nicolas Terzi, Pascal Beuret, Antoine Monsel, Anne-Laure Poujol, Khaldoun Kuteifan, Thierry Vanderlinden, Anne Renault, Bérengère Vivet, Christophe Vinsonneau, Saber Davide Barbar, Gilles Capellier, Jean Dellamonica, Stephan Ehrmann, Thomas Rimmelé, Julien Bohé, Pierre Bouju, Sébastien Gibot, Bruno Lévy, Johanna Temime, Cyrille Pichot, David Schnell, Diane Friedman, Pierre Asfar, Eddy Lebas, Philippe Mateu, Kada Klouche, Juliette Audibert, Fiona Ecarnot, Nicolas Meunier-Beillard, Mélanie Loiseau, Irène François-Pursell, Christine Binquet, Jean-Pierre Quenot
Annals of Intensive Care, 2021, 11 (1), pp.90. ⟨10.1186/s13613-021-00880-y⟩
Article dans une revueAbstractBackground We investigated the impact of the COVID-19 crisis on mental health of professionals working in the intensive care unit (ICU) according to the intensity of the epidemic in France. Methods This cross-sectional survey was conducted in 77 French hospitals from April 22 to May 13 2020. All ICU frontline healthcare workers were eligible. The primary endpoint was the mental health, assessed using the 12-item General Health Questionnaire. Sources of stress during the crisis were assessed using the Perceived Stressors in Intensive Care Units (PS-ICU) scale. Epidemic intensity was defined as high or low for each region based on publicly available data from Santé Publique France. Effects were assessed using linear mixed models, moderation and mediation analyses. Results In total, 2643 health professionals participated; 64.36% in high-intensity zones. Professionals in areas with greater epidemic intensity were at higher risk of mental health issues ( p < 0.001), and higher levels of overall perceived stress ( p < 0.001), compared to low-intensity zones. Factors associated with higher overall perceived stress were female sex ( B = 0.13; 95% confidence interval [CI] = 0.08–0.17), having a relative at risk of COVID-19 ( B = 0.14; 95%-CI = 0.09–0.18) and working in high-intensity zones ( B = 0.11; 95%-CI = 0.02–0.20). Perceived stress mediated the impact of the crisis context on mental health ( B = 0.23, 95%-CI = 0.05, 0.41) and the impact of stress on mental health was moderated by positive thinking, b = − 0.32, 95% CI = − 0.54, − 0.11. Conclusion COVID-19 negatively impacted the mental health of ICU professionals. Professionals working in zones where the epidemic was of high intensity were significantly more affected, with higher levels of perceived stress. This study is supported by a grant from the French Ministry of Health (PHRC-COVID 2020).
Long-term cardiovascular complications following sepsis: is senescence the missing link?
Hamid Merdji, Valérie Schini-Kerth, Ferhat Meziani, Florence Toti
Annals of Intensive Care, 2021, 11 (1), pp.166. ⟨10.1186/s13613-021-00937-y⟩
Article dans une revueAbstractAmong the long-term consequences of sepsis (also termed “post-sepsis syndrome”) the increased risk of unexplained cardiovascular complications, such as myocardial infarction, acute heart failure or stroke, is one of the emerging specific health concerns. The vascular accelerated ageing also named premature senescence is a potential mechanism contributing to atherothrombosis, consequently leading to cardiovascular events. Indeed, vascular senescence-associated major adverse cardiovascular events (MACE) are a potential feature in sepsis survivors and of the elderly at cardiovascular risk. In these patients, accelerated vascular senescence could be one of the potential facilitating mechanisms. This review will focus on premature senescence in sepsis regardless of age. It will highlight and refine the potential relationships between sepsis and accelerated vascular senescence. In particular, key cellular mechanisms contributing to cardiovascular events in post-sepsis syndrome will be highlighted, and potential therapeutic strategies to reduce the cardiovascular risk will be further discussed.
Nanoencapsulation of the omega-3 EPA:DHA 6:1 formulation enhances and sustains NO-mediated endothelium-dependent relaxations in coronary artery rings and NO formation in endothelial cells
L. Remila, E. Belcastro, N. Guenday-Tuereli, S. Park, U. Houngue, T. Vandamme, E. Tuereli, P. Kerth, C. Auger, V. Schini-Kerth
Journal of Functional Foods, 2021, 87, pp.104851. ⟨10.1016/j.jff.2021.104851⟩
Article dans une revueAbstractThe eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) formulation with a ratio of 6:1 is a potent stimulator of the endothelial formation of nitric oxide (NO). The aim of the study was to investigate whether nanoencapsulation of EPA:DHA 6:1 followed by coating with gum increases its biological activity. Vascular reactivity was assessed using porcine coronary artery rings, the formation of NO in cultured endothelial cells (ECs) using DAF-FM and indirectly by platelet aggregation studies. Coated EPA:DHA 6:1 nanoparticles induced sustained relaxations of coronary artery rings that were greater in rings with than in those without endothelium, and more pronounced than with the native form. Treatment of ECs with coated EPA:DHA 6:1 nanoparticles caused greater and more sustained formation of NO and enhanced their anti-aggregatory effects. Thus, nanoencapsulation of EPA:DHA 6:1 is an attractive strategy to enhance the beneficial effect at the vascular endothelium.
Baseline mean platelet volume is a strong predictor of major and life-threatening bleedings after transcatheter aortic valve replacement
Antonin Trimaille, Kensuke Matsushita, Benjamin Marchandot, Adrien Carmona, Sébastien Hess, Marion Kibler, Joé Heger, Antje Reydel, Laurent Sattler, Lelia Grunebaum, Laurence Jesel, Patrick Ohlmann, Olivier Morel
PLoS ONE, 2021, 16 (11), pp.e0260439. ⟨10.1371/journal.pone.0260439⟩
Article dans une revueAbstractBackground: Bleeding following transcatheter aortic valve replacement (TAVR) has important prognostic implications. This study sought to evaluate the impact of baseline mean platelet volume (MPV) on bleeding events after TAVR. Methods and results: Patients undergoing TAVR between February 2010 and May 2019 were included. Low MPV (L-MPV) was defined as MPV ≤10 fL and high MPV (H-MPV) as MPV >10 fL. The primary endpoint was the occurrence of major/life-threatening bleeding complications (MLBCs) at one-year follow-up. Among 1,111 patients, 398 (35.8%) had L-MPV and 713 (64.2%) had H-MPV. The rate of MLBCs at 1 year was higher in L-MPV patients compared with H-MPV patients (22.9% vs. 17.7% respectively, p = 0.034). L-MPV was associated with vascular access-site complications (36.2% vs. 28.9%, p = 0.012), early (<30 days) major bleeding (15.6% vs. 9.4%, p<0.01) and red blood cell transfusion >2 units (23.9% vs. 17.5%, p = 0.01). No impact of baseline MPV on overall death, cardiovascular death and ischemic events (myocardial infarction and stroke) was evidenced. Multivariate analysis using Fine and Gray model identified preprocedural hemoglobin (sHR 0.84, 95%CI [0.75–0.93], p = 0.001), preprocedural L-MPV (sHR 1.64, 95%CI [1.16–2.32], p = 0.005) and closure time adenosine diphosphate post-TAVR (sHR 2.71, 95%CI [1.87–3.95], p<0.001) as predictors of MLBCs. Conclusions: Preprocedural MPV was identified as an independent predictor of MLBCs one year after TAVR, regardless of the extent of platelet inhibition and primary hemostasis disorders.
Biphasic Drug Release from Rolled-Up Gelatin Capsules with a Cylindrical Cavity
Jihane Mzoughi, Thierry Vandamme, Valeriy Luchnikov
Pharmaceutics, 2021, 13 (12), pp.2040. ⟨10.3390/pharmaceutics13122040⟩
Article dans une revueAbstractBiphasic drug delivery systems are used for quick release of a specific amount of drug for immediate amelioration of a patient's state, followed by sustained release, to avoid repeated administration. This type of delivery is often necessary for pain management and the treatment of many pathologies, such as migraines, hypertension, and insomnia. In this work, we propose a novel architecture of a biphasic release media that does not need the rapidly disintegrating layer and that allows for easily setting the sustained release rate. A drug-containing capsule is made by rolling up a thermally crosslinked gelatin strip on which drug reservoirs are formed by casting. The quickrelease reservoir (QRR) is placed at the strip's extremity, from which the rolling starts, while the sustained-release reservoir (SRR) is formed in the middle part of the strip. The strip is rolled around a cylinder that is a few millimeters wide, which is removed after rolling. The roll is stabilized by transglutaminase-catalyzed crosslinking of the consecutive shells. A biphasic release is successfully demonstrated with the use of model fluorescent drugs for single-dye and double-dye systems in phosphate-buffered saline (PBS) solution with pH = 7.4. In vitro, the drug from the QRR, placed at the walls of the cavity of the roll, is released immediately upon the capsule's contact with the PBS solution. The drug from the SRR, embedded between the roll's layers, diffuses steadily, with the lag time defined by the radial position of the reservoir.
Biodegradable magnesium barrier membrane used for guided bone regeneration in dental surgery
Patrick Rider, Željka Kačarević, Akiva Elad, Drazen Tadic, Daniel Rothamel, Gerrit Sauer, Fabien Bornert, Peter Windisch, Dávid Hangyási, Balint Molnar, Emely Bortel, Bernhard Hesse, Frank Witte
Bioactive Materials, 2021, ⟨10.1016/j.bioactmat.2021.11.018⟩
Article dans une revueAbstractBarrier membranes are commonly used as part of the dental surgical technique guided bone regeneration (GBR) and are often made of resorbable collagen or non-resorbable materials such as PTFE. While collagen membranes do not provide sufficient mechanical protection of the covered bone defect, titanium reinforced membranes and non-resorbable membranes need to be removed in a second surgery. Thus, biodegradable GBR membranes made of pure magnesium might be an alternative. In this study a biodegradable pure magnesium (99.95%) membrane has been proven to have all of the necessary requirements for an optimal regenerative outcome from both a mechanical and biological perspective. After implantation, the magnesium membrane separates the regenerating bone from the overlying, faster proliferating soft tissue. During the initial healing period, the membrane maintained a barrier function and space provision, whilst retaining the positioning of the bone graft material within the defect space. As the magnesium metal corroded, it formed a salty corrosion layer and local gas cavities, both of which extended the functional lifespan of the membrane barrier capabilities. During the resorption of the magnesium metal and magnesium salts, it was observed that the membrane became surrounded and then replaced by new bone. After the membrane had completely resorbed, only healthy tissue remained. The in vivo performance study demonstrated that the magnesium membrane has a comparable healing response and tissue regeneration to that of a resorbable collagen membrane. Overall, the magnesium membrane demonstrated all of the ideal qualities for a barrier membrane used in GBR treatment.
Assessing therapy response in patient-derived xenografts
Janosch Ortmann, Ladislav Rampášek, Elijah Tai, Arvind Singh Mer, Ruoshi Shi, Erin Stewart, Céline Mascaux, Aline Fares, Nhu-An Pham, Gangesh Beri, Christopher Eeles, Denis Tkachuk, Chantal Ho, Shingo Sakashita, Jessica Weiss, Xiaoqian Jiang, Geoffrey Liu, David Cescon, Catherine O’brien, Sheng Guo, Ming-Sound Tsao, Benjamin Haibe-Kains, Anna Goldenberg
Science Translational Medicine, 2021, 13 (620), ⟨10.1126/scitranslmed.abf4969⟩
Article dans une revueAbstractWe propose a measure for robust quantification of in vivo drug response that accounts for variation across both treatment and control replicates.
Utilization of a training portfolio in thoracic and cardiovascular surgery: the example of the French platform-EPIFORM
Alex Fourdrain, Charles-Henri David, Lucile Gust, Gilbert Massard
Journal of Thoracic Disease, 2021, 13 (3), ⟨10.21037/jtd.2018.08.104⟩
Article dans une revueAbstractThoracic and cardiovascular surgery requires learning both theoretical knowledge and technical skills. In this surgical field, several disparities exist between the different training programs around the world. This report describes the implementation of a portfolio in the teaching and assessment of French trainees in Thoracic and Cardiovascular surgery, following an electronic logbook model, aiming to improve the training program. The French surgical course is a twelve semesters’ curriculum divided in 3 parts, each part containing knowledge, technical skills and behaviors objectives to be validated, defined by the French College of Thoracic and Cardiovascular surgery. The competencies are marked in the logbook, following a declarative model where the surgical trainee fills every surgical procedure attended (all or part) if he/she has observed, partially or fully performed, or supervised another trainee. All the surgical procedures are linked to theoretical e-learning lessons and each e-learning lesson includes a self-evaluation. This constitutes a competency-based assessment model with milestones both for surgeon trainees and their mentors. This portfolio also contains complementary tools such as an automated publication point calculation, a formatted curriculum vitae generator, and several contact tools between trainees. Implementation of a dedicated portfolio following an electronic logbook model appears to be a relevant pedagogic tool and survey element in the thoracic and cardiovascular surgery training program. Its use may lead to potential educational benefits for the trainee, reliable competency assessment for the supervising surgeon and for scientific society or national college.
Robert Frank: A Pioneer and Visionary Scientist in Oral Medicine
Corinne Taddei-Gross, Anne-Marie Musset, Youssef Haikel, Agnès Bloch
Journal of Dental Research, 2021, 100 (12), pp.1309-1312. ⟨10.1177/00220345211034766⟩
Article dans une revueAbstractThe Faculty of Dental Surgery of the University of Strasbourg would not be the great institute it is today if it were not for an admirable, or rather extraordinary, man: Robert Frank (May 21, 1924-August 7, 2020). He was the first dean of the Faculty of Dental Surgery at the University of Strasbourg, France. He was a dynamic and notorious leader. He brought forward amazing progress-in administration, dental research, and public health at both national and international levels. He was recognized for his top-quality innovative research and elected the 60th president of the International Association for Dental Research (1983-1984). Upon retirement, he continued his commitment to advancing humanity through painting his vision of the microscopic world and developing a "nanoart" vision. Keywords: dental education; electron microscopy; evidence-based dentistry/health care; public health; publishing; scanning electron microscopy.
Time to consider neuroinflammation as a booster effect of cerebral venous sinus thrombosis in vaccine-induced immune thrombotic thrombocytopenia?
Benjamin Marchandot, Adrien Carmona, Olivier Morel
Journal of Thrombosis and Thrombolysis, 2021, 53, pp.564-566. ⟨10.1007/s11239-021-02580-7⟩
Article dans une revueProfiling of ob/ob mice skeletal muscle exosome-like vesicles demonstrates combined action of miRNAs, proteins and lipids to modulate lipid homeostasis in recipient cells
Audrey Jalabert, Laura Reininger, Emmanuelle Berger, Yohann Coute, Emmanuelle Meugnier, Alexis Forterre, Elizabeth Errazuriz-Cerda, Alain Geloen, Myriam Aouadi, Karim Bouzakri, Jennifer Rieusset, Sophie Rome
Scientific Reports, 2021, 11 (1), ⟨10.1038/s41598-021-00983-3⟩
Article dans une revueAbstractWe have determined the lipid, protein and miRNA composition of skeletal muscle (SkM)-released extracellular vesicles (ELVs) from Ob/ob (OB) vs wild-type (WT) mice. The results showed that atrophic insulin-resistant OB-SkM released less ELVs than WT-SkM, highlighted by a RAB35 decrease and an increase in intramuscular cholesterol content. Proteomic analyses of OB-ELVs revealed a group of 37 proteins functionally connected, involved in lipid oxidation and with catalytic activities. OB-ELVs had modified contents for phosphatidylcholine (PC 34-4, PC 40-3 and PC 34-0), sphingomyelin (Sm d18:1/18:1) and ceramides (Cer d18:1/18:0) and were enriched in cholesterol, likely to alleviated intracellular accumulation. Surprisingly many ELV miRNAs had a nuclear addressing sequence, and targeted genes encoding proteins with nuclear activities. Interestingly, SkM-ELV miRNA did not target mitochondria. The most significant function targeted by the 7 miRNAs altered in OB-ELVs was lipid metabolism. In agreement, OB-ELVs induced lipid storage in recipient adipocytes and increased lipid up-take and fatty acid oxidation in recipient muscle cells. In addition, OB-ELVs altered insulin-sensitivity and induced atrophy in muscle cells, reproducing the phenotype of the releasing OB muscles. These data suggest for the first time, a cross-talk between muscle cells and adipocytes, through the SkM-ELV route, in favor of adipose tissue expansion.
In-situ forming drug-delivery systems for periodontal treatment: current knowledge and perspectives
Marie Dubar, Martin Lizambard, Elisabeth Delcourt-Debruyne, Fareeha Batool, Olivier Huck, Florence Siepmann, Kevimy Agossa
Biomedical Materials, 2021, 16 (6), ⟨10.1088/1748-605X/ac254c⟩
Article dans une revueAbstractSeveral chemical compounds are considered to be promising as adjuvants in the treatment of periodontitis. Antimicrobials, anti-inflammatory drugs or, more recently, pro-regenerative or antioxidant molecules have shown a very interesting potential to improve the outcomes of mechanical biofilm removal and promote the healing of the damaged tissues. However, their clinical effect is often limited by the challenge of achieving effective and prolonged drug delivery within the periodontal lesion, while limiting the risk of toxicity. In-situ forming implants (ISFI) are 'implantable' drug-delivery systems that have gained considerable attention over the last few decades due to their multiple biomedical applications. They are liquids that, when injected at the site to be treated, form a semi-solid or solid dosage form that provides safe and locally controlled drug release. This review discusses current data and future prospects for the use of ISFI in periodontal treatment.
Factors associated with coinfections in invasive aspergillosis: a retrospective cohort study
François Danion, Céline Duval, François Séverac, Philippe Bachellier, Ermanno Candolfi, Vincent Castelain, Raphael Clere-Jehl, Julie Denis, Laurence Dillenseger, Eric Epailly, Justine Gantzer, Blandine Guffroy, Yves Hansmann, Jean-Etienne Herbrecht, Valerie Letscher-Bru, Pierre Leyendecker, Pauline Le van Quyen, Pierre-Olivier Ludes, Guillaume Morel, Bruno Moulin, Catherine Paillard, Benjamin Renaud-Picard, Anne-Claude Roche, Alina Marcela Sabou, Francis Schneider, Morgane Solis, Émilie Talagrand-Reboul, Francis Veillon, Marie-Pierre Ledoux, Célestine Simand, Raoul Herbrecht
Clinical Microbiology and Infection, 2021, 27 (11), pp.1644-1651. ⟨10.1016/j.cmi.2021.02.021⟩
Article dans une revueAbstractObjectives: To describe the coinfections in invasive aspergillosis (IA), to identify factors associated with coinfections, and to evaluate the impact of coinfection on mortality.Patients and methods: We conducted a monocentric retrospective study of consecutive putative, probable, or proven IA that occurred between 1997 and 2017. All coinfections, with an onset within 7 days before or after the first sign of aspergillosis, were identified. Factors associated with coinfections and mortality were analysed by multivariable analysis.Results: Among the 690 patients with IA included in the study, the median age was 57 years (range 7 days to 90 years). A coinfection was diagnosed in 272/690 patients (39.4%, 95%CI 35.8-43.2). The location of this coinfection was pulmonary only in 131/272 patients (48%), bloodstream only in 66/272 patients (24%) and other/multiple sites in 75/272 patients (28%). Coinfections were bacterial (110/272 patients, 40%), viral (58/272, 21%), fungal (57/272, 21%), parasitic (5/272, 2%) or due to multiple types of pathogens (42/272, 15%). Factors associated with a coinfection in adjusted analysis were: allogeneic haematopoietic stem-cell transplantation (OR 2.3 (1.2-4.4)), other haematological malignancies (OR 2.1 (1.2-3.8)), other underlying diseases (OR 4.3 (1.4-13.6)), lymphopenia (OR 1.7 (1.1-2.5)), C-reactive protein >180 mg/L (OR 1.9 (1.2-3.0)), fever (OR 2.4 (1.5-4.1)), tracheal intubation (OR 2.6 (1.5-4.7)), isolation of two or more different Aspergillus species (OR 2.7 (1.1-6.3)), and the presence of non-nodular lesions on chest computed tomography (OR 2.2 (1.3-3.7) and OR 2.2 (1.2-4.0)). Coinfections were independently associated with a higher mortality at week 12 (adjusted HR 1.5 (1.1-1.9), p < 0.01).Conclusions: Coinfections are frequent in IA patients and are associated with higher mortality.
The prognostic value of lymph node ratio in patients with surgically resected stage I–III small-cell lung cancer: a propensity score matching analysis of the SEER database
Pierre-Emmanuel Falcoz
European Journal of Cardio-Thoracic Surgery, 2021, 60 (5), pp.1221-1222. ⟨10.1093/ejcts/ezab375⟩
Article dans une revueModulation of immune-inflammatory responses through surface modifications of biomaterials to promote bone healing and regeneration
Fareeha Batool, Hayriye Özcelik, Céline Stutz, Pierre-Yves Gegout, Nadia Benkirane-Jessel, Catherine Petit, Olivier Huck
Journal of Tissue Engineering, 2021, 12, ⟨10.1177/20417314211041428⟩
Article dans une revueAbstractControl of inflammation is indispensable for optimal oral wound healing and tissue regeneration. Several biomaterials have been used to enhance the regenerative outcomes; however, the biomaterial implantation can ensure an immune-inflammatory response. The interface between the cells and the biomaterial surface plays a critical role in determining the success of soft and hard tissue regeneration. The initial inflammatory response upon biomaterial implantation helps in tissue repair and regeneration, however, persistant inflammation impairs the wound healing response. The cells interact with the biomaterials through extracellular matrix proteins leading to protein adsorption followed by recruitment, attachment, migration, and proliferation of several immune-inflammatory cells. Physical nanotopography of biomaterials, such as surface proteins, roughness, and porosity, is crucial for driving cellular attachment and migration. Similarly, modification of scaffold surface chemistry by adapting hydrophilicity, surface charge, surface coatings, can down-regulate the initiation of pro-inflammatory cascades. Besides, functionalization of scaffold surfaces with active biological molecules can down-regulate pro-inflammatory and pro-resorptive mediators' release as well as actively up-regulate anti-inflammatory markers. This review encompasses various strategies for the optimization of physical, chemical, and biological properties of biomaterial and the underlying mechanisms to modulate the immune-inflammatory response, thereby, promoting the tissue integration and subsequent soft and hard tissue regeneration potential of the administered biomaterial.
Impact on antimicrobial consumption of procalcitonin-guided antibiotic therapy for pneumonia/pneumonitis associated with aspiration in comatose mechanically ventilated patients: a multicenter, randomized controlled study
Guylaine Labro, François Aptel, Marc Puyraveau, Jonathan Paillot, Sébastien Pili Floury, Hamid Merdji, Julie Helms, Gaël Piton, Fiona Ecarnot, Khaldoun Kuteifan, Jean Pierre Quenot, Gilles Capellier
Annals of Intensive Care, 2021, 11 (1), ⟨10.1186/s13613-021-00931-4⟩
Article dans une revueAbstractBackground In comatose patients receiving oro-tracheal intubation for mechanical ventilation (MV), the risk of aspiration is increased. Aspiration can lead to chemical pneumonitis (inflammatory reaction to the gastric contents), or aspiration pneumonia (infection caused by inhalation of microorganisms). Distinguishing between the two types is challenging. We tested the interest of using a decisional algorithm based on procalcitonin (PCT) values to guide initiation and discontinuation of antibiotic therapies in intubated patients. Methods The PROPASPI (PROcalcitonin Pneumonia/pneumonitis Associated with ASPIration) trial is a multicenter, prospective, randomized, controlled, single-blind, superiority study comparing two strategies: (1) an intervention group where threshold PCT values were used to guide initiation and discontinuation of antibiotics (PCT group); and (2) a control group, where antibiotic therapy was managed at the physician's discretion. Patients aged 18 years or over, intubated for coma (Glasgow score <= 8), with MV initiated within 48 h after admission, were eligible. The primary endpoint was the duration of antibiotic treatment during the first 15 days after admission to the ICU. Results From 24/2/2015 to 28/8/2019, 1712 patients were intubated for coma in the 5 participating centers, of whom 166 were included in the study. Data from 159 were available for intention-to-treat analysis: 81 in the PCT group, and 78 in the control group. Overall, 67 patients (43%) received antibiotics in the intensive care unit (ICU); there was no significant difference between groups (37 (46%) vs 30 (40%) for PCT vs control, p = 0.432). The mean duration of antibiotic treatment during the first 15 days in the ICU was 2.7 +/- 3.8 days; there was no significant difference between groups (3.0 +/- 4.1 days vs 2.3 +/- 3.4 days for PCT vs control, p = 0.311). The mean number of days under MV was significantly higher in the PCT group (3.7 +/- 3.6 days) than in controls (2.7 +/- 2.5 days, p = 0.033). The duration of ICU stay was also significantly longer in the PCT group: 6.4 +/- 6.5 days vs 4.6 +/- 3.5 days in the control group (p = 0.043). After adjustment for SAPS II score, the difference in length of stay and duration of mechanical ventilation between groups was no longer significant. Conclusion The use of PCT values to guide therapy, in comparison to the use of clinical, biological (apart from PCT) and radiological criteria, does not modify exposure to antibiotics in patients intubated for coma. Trial registration Clinicaltrials.gov Identifier NCT02862314.
Safety and tolerability of non-neutralizing adrenomedullin antibody adrecizumab (HAM8101) in septic shock patients: the AdrenOSS-2 phase 2a biomarker-guided trial
Pierre-François Laterre, Peter Pickkers, Gernot Marx, Xavier Wittebole, Ferhat Meziani, Thierry Dugernier, Vincent Huberlant, Tobias Schuerholz, Bruno François, Jean-Baptiste Lascarrou, Albertus Beishuizen, Haikel Oueslati, Damien Contou, Oscar Hoiting, Jean-Claude Lacherade, Benjamin Chousterman, Julien Pottecher, Michael Bauer, Thomas Godet, Mahir Karakas, Julie Helms, Andreas Bergmann, Jens Zimmermann, Kathleen Richter, Oliver Hartmann, Melanie Pars, Alexandre Mebazaa
Intensive Care Medicine, 2021, 47 (11), pp.1284-1294. ⟨10.1007/s00134-021-06537-5⟩
Article dans une revueAbstractPURPOSE: Investigate safety and tolerability of adrecizumab, a humanized monoclonal adrenomedullin antibody, in septic shock patients with high adrenomedullin. METHODS: Phase-2a, double-blind, randomized, placebo-controlled biomarker-guided trial with a single infusion of adrecizumab (2 or 4 mg/kg b.w.) compared to placebo. Patients with adrenomedullin above 70 pg/mL, < 12 h of vasopressor start for septic shock were eligible. Randomization was 1:1:2. Primary safety (90-day mortality, treatment emergent adverse events (TEAE)) and tolerability (drug interruption, hemodynamics) endpoints were recorded. Efficacy endpoints included the Sepsis Support Index (SSI, reflecting ventilator- and shock-free days alive), change in Sequential-related Organ Failure Assessment (SOFA) and 28-day mortality. RESULTS: 301 patients were enrolled (median time of 8.5 h after vasopressor start). Adrecizumab was well tolerated (one interruption, no hemodynamic alteration) with no differences in frequency and severity in TEAEs between treatment arms (TEAE of grade 3 or higher: 70.5% in the adrecizumab group and 71.1% in the placebo group) nor in 90-day mortality. Difference in change in SSI between adrecizumab and placebo was 0.72 (CI -1.93-0.49, p = 0.24). Among various secondary endpoints, delta SOFA score (defined as maximum versus minimum SOFA) was more pronounced in the adrecizumab combined group compared to placebo [difference at 0.76 (95% CI 0.18-1.35); p = 0.007]. 28-day mortality in the adrecizumab group was 23.9% and 27.7% in placebo with a hazard ratio of 0.84 (95% confidence interval 0.53-1.31, log-rank p = 0.44). CONCLUSIONS: Overall, we successfully completed a randomized trial evaluating selecting patients for enrolment who had a disease-related biomarker. There were no overt signals of harm with using two doses of the adrenomedullin antibody adrecizumab; however, further randomized controlled trials are required to confirm efficacy and safety of this agent in septic shock patients.
Prohibitin Inactivation in Adipocytes Results in Reduced Lipid Metabolism and Adaptive Thermogenesis Impairment
Zhanguo Gao, Alexes C Daquinag, Cale Fussell, Amel Djehal, Laurent Désaubry, Mikhail G Kolonin
Diabetes, 2021, 70 (10), pp.2204-2212. ⟨10.2337/db21-0094⟩
Article dans une revueMolecular Mechanism of EGFR-TKI Resistance in EGFR-Mutated Non-Small Cell Lung Cancer: Application to Biological Diagnostic and Monitoring
Damien Reita, Lucile Pabst, Erwan Pencreach, Eric Guérin, Laurent Dano, Valérie Rimelen, Anne-Claire Voegeli, Laurent Vallat, Céline Mascaux, Michèle Beau-Faller
Cancers, 2021, 13 (19), pp.4926. ⟨10.3390/cancers13194926⟩
Article dans une revueAbstractNon-small cell lung cancer (NSCLC) is the most common cancer in the world. Activating epidermal growth factor receptor (EGFR) gene mutations are a positive predictive factor for EGFR tyrosine kinase inhibitors (TKIs). For common EGFR mutations (Del19, L858R), the standard first-line treatment is actually third-generation TKI, osimertinib. In the case of first-line treatment by first (erlotinib, gefitinib)- or second-generation (afatinib) TKIs, osimertinib is approved in second-line treatment for patients with T790M EGFR mutation. Despite the excellent disease control results with EGFR TKIs, acquired resistance inevitably occurs and remains a biological challenge. This leads to the discovery of novel biomarkers and possible drug targets, which vary among the generation/line of EGFR TKIs. Besides EGFR second/third mutations, alternative mechanisms could be involved, such as gene amplification or gene fusion, which could be detected by different molecular techniques on different types of biological samples. Histological transformation is another mechanism of resistance with some biological predictive factors that needs tumor biopsy. The place of liquid biopsy also depends on the generation/line of EGFR TKIs and should be a good candidate for molecular monitoring. This article is based on the literature and proposes actual and future directions in clinical and translational research.
Limited Resection Versus Pancreaticoduodenectomy for Duodenal Gastrointestinal Stromal Tumors? Enucleation Interferes in the Debate: A European Multicenter Retrospective Cohort Study
Clément Dubois, Frederiek Nuytens, Hélène Behal, Caroline Gronnier, Gilles Manceau, Maxime Warlaumont, Alain Duhamel, Quentin Denost, Charles Honoré, Olivier Facy, Jean-Jacques Tuech, Guido Tiberio, Cécile Brigand, Jean-Pierre Bail, Ephrem Salame, Bernard Meunier, Jérémie Lefevre, Muriel Mathonnet, Mohamed Sbai Idrissi, Florence Renaud, Guillaume Piessen, Francois Browet, Charles Sabbagh, Jean-Marc Regimbeau, Emilie Lermite, Antoine Hamy, Kevin Kraft, Richard Douard, Philippe Wind, Hélène Gersen-Cherdieu, Denis Collet, Magalie Cabau, Christophe Laurent, Eric Rullier, Arianna Coniglio, Charles-Henry Gancel, Bogdan Badic, Gilbert Ouedraogo, Mircea Beuran, Aude Brams, Marc Kanor, Christophe Louis, Yves Russier, Yves Panis, Léon Maggiori, Camille Caille, Géraud Tuyeras, Simon Msika, Luigi de Magistris, T. Perrin, Patrick Rat, Pablo Ortega Deballon, Philippe Meignie, Jean François Bronner, Jacques Moline, Claude Mondersert, André Caamano, Catherine Arvieux, Jean-Luc Faucheron, Christian Letoublon, Antoine Guillaud, Ségolène Lardenois, Jean-Michel Nuss, Patrick Chevillotte, Edouard Vinatier, Williams Tessier, Robert Caiazzo, François Pattou, Nicolas Lamande, Mehrdad Jafari, Gauthier Decanter, François Paraf, Mohamed Alyami, Delphine Vaudoyer, Guillaume Passot, Olivier Glehen, Hassan Demian, Christian Ducerf, Jean-Yves Mabrut, Marc Rivoire, Vincent Garbit, Thierry Leclercq, Jean Loire, Olivier Raspado, Rémy Le Huu Nho, Mehdi Ouaissi, Igor Sieleznef, Bernard Sastre, Bernard Pol, Manuela Campanile, Sami Hamed, Jean Hardwigsen, Yves-Patrice Le Treut, Gérard Carbonnel, Charlotte de Saint Roman, M. Tréot, Philippe Sockeel, Ghislain Tourreau, Vasileios Baltzopoulos, Anne Mourregot, Philippe Rouanet, L. Bresler, P. Senellart, Guillaume Meurette, Paul Antoine Lehur, Nicolas Regenet, Vincent Casanova, Anne Sophie Schneck, Antonio Ianelli, Jean Gugenheim, Mehdi Karoui, Jean Christophe Vaillant, Jean Baptise Bachet, Laurent Hannoun, Renato Lupinacci, Francois Menegaux, Christophe Tresallet, Antoine Brouquet, Stéphane Benoist, Christophe Penna, Pierre Balladur, Yann Parc, François Paye, Najim Chafai, Emmanuel Tiret, Pierre Cattan, Emile Sarfati, Leonor Benhaim, F. Sista, Sidney Houry, Pascale Mariani, Béatrice Ullua Severino, Brice Gayet, Thierry Perniceni, Jean-Pierre Richer, Jean Pierre Faure, Jean Louis Kraimps, Sophie Deguelte-Lardiere, Olivier Bouche, Reza Kianmanesch, Charles Le Clec’h, Laurent Sulpice, Bernard Meunier, Karim Boudjema, Emmanuel Huet, Michel Scotte, Francis Michot, Thomas Sole, Clément Costanza, Charlotte Vermesch, Santina Bruno, Jack Porcheron, M. Raharimanantsoa, Patrick Pessaux, Silvana Perretta, Didier Mutter, H. Mercoli, A. Klipfel, E. Triki, B. Romain, S. Dragomir, N. Chilintseva, J. Olliern, Serge Rohr, Alexandre Rault, Charles Henri Julio, Mael Chalret Du Rieu, Nicolas Carrere, Bernard Pradère, Perrine Senellart, Baudoin Thébault, Nicolo de Manzini, Christophe Henry, Sylvie Bonvalot
Annals of Surgical Oncology, 2021, 28 (11), pp.6294-6306. ⟨10.1245/s10434-021-09862-7⟩
Article dans une revueThe critical role of microvesicles in the modulation of renin-angiotensin-aldosterone system in endothelial homeostasis
Antonin Trimaille, Benjamin Marchandot, Kensuke Matsushita, Olivier Morel
American Journal of Physiology - Heart and Circulatory Physiology, 2021, 321 (4), ⟨10.1152/ajpheart.00466.2021⟩
Article dans une revueA randomized controlled trial of liposomal cyclosporine A for inhalation in the prevention of bronchiolitis obliterans syndrome following lung transplantation
Claus Neurohr, Nikolaus Kneidinger, Alessandro Ghiani, Víctor Monforte, Christiane Knoop, Peter Jaksch, Jasvir Parmar, Piedad Ussetti, Amparo Sole, Joachim Müller-Quernheim, Romain Kessler, Hubert Wirtz, Gerhard Boerner, Oliver Denk, Stefanie Prante Fernandes, Juergen Behr
American Journal of Transplantation, 2021, 22 (1), pp.222-229. ⟨10.1111/ajt.16858⟩
Article dans une revueAbstractLong-term survival after lung transplantation is limited by chronic allograft dysfunction. The aim of this study was to investigate the effect of locally augmented immunosuppression with liposomal cyclosporine A for inhalation (L-CsA-i) for the prevention of bronchiolitis obliterans syndrome (BOS). In a randomized, double-blind, placebo-controlled, multi-center Phase 3 study, 180 LT recipients in BOS grade 0 were planned to receive L-CsA-i or placebo in addition to triple-drug immunosuppression. L-CsA-i was administered twice daily via an Investigational eFlow nebulizer to recipients of single (SLT) and bilateral lung transplants (BLT) within 6-32 weeks posttransplant, and continued for 2 years. The primary endpoint was BOS-free survival. 130 patients were enrolled before the study was prematurely terminated for business reasons. Despite a 2-year actuarial difference in BOS-free survival of 14.1% in favor of L-CsA-i in the overall study population, the primary endpoint was not met (p = .243). The pre-defined per protocol analysis of SLT recipients (n = 24) resulted in a treatment difference of 58.2% (p = .053). No difference was observed in the BLT (n = 48) subpopulation (p = .973). L-CsA-i inhalation was well tolerated. Although this study failed to meet its primary endpoint, the results warrant additional investigation of L-CsA-i in lung transplant recipients.
Clinical Evolutionary Profile of Adult Patients Infected with SARS-CoV-2 and Hospitalized from the Emergency Department of Strasbourg
T. Santiago, M. Oberlin, J. Contenti, P. Bilbault, J. Levraut
Annales françaises de médecine d'urgence, 2021, 11 (5), pp.281-288. ⟨10.3166/afmu-2021-0348⟩
Article dans une revueAbstractBackground : In emergency departments (EDs), the coronavirus disease 2019 (Covid-19) outbreak needs evaluation of severity criteria. Covid-19 is progressive and respiratory deterioration leads to the prognosis. The focus of the study was to find predictive factors of severity, according to the time period between disease onset and introduction of oxygen therapy, in a French population with Covid-19 within the ED. Methods : The observational retrospective study, led by the teaching hospitals of Strasbourg, during the first wave of the pandemic, included hospitalized patients from the ED in 2020, for infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). We evaluated the time period between disease onset and introduction of oxygen therapy, and between disease onset and development of hospital complications. By multivariate analysis, we researched features associated with early oxygen therapy and in-hospital mortality. Findings : Of the 699 patients included, the mean period from disease onset to initiate oxygen was 7 ± 4 days, and to initiate mechanical ventilation was 9 ± 4 days. The early introduction of oxygen (i.e., before six days after disease onset) was significantly and independently related to immunosuppression, elderly patients (aged ≥75 years), hypertension, and female gender. In-hospital mortality was significantly and independently related to elderly patients (aged ≥75 years), immunosuppression, ischemic heart disease, and early oxygen therapy. Conclusion : Among hospitalized patients for Covid-19 during the first wave, the mean period to initiate oxygen was seven days. Early oxygen therapy, elderly age, immunosuppression, and ischemic heart disease are significantly related to severe Covid-19.
Incomplete Recovery From Takotsubo Syndrome Is a Major Determinant of Cardiovascular Mortality
Kensuke Matsushita, Lucie Lachmet-Thébaud, Benjamin Marchandot, Antonin Trimaille, Chisato Sato, Charlotte Dagrenat, Stephane Greciano, Fabien de Poli, Pierre Leddet, Marilou Peillex, Sébastien Hess, Adrien Carmona, Charline Jimenez, Joe Heger, Antje Reydel, Patrick Ohlmann, Laurence Jesel, Olivier Morel
Circulation Journal, 2021, 85 (10), pp.1823-1831. ⟨10.1253/circj.CJ-20-1116⟩
Article dans une revueAbstractBACKGROUND: Although there is an apparent rapid and spontaneous recovery of left ventricular ejection fraction (LVEF) in patients with Takotsubo syndrome (TTS), recent studies have demonstrated a long-lasting functional impairment in those patients. The present study sought to evaluate the predictors of incomplete recovery following TTS and its impact on cardiovascular mortality.Methods and Results:Patients with TTS between 2008 and 2018 were retrospectively enrolled at 3 different institutions. After exclusion of in-hospital deaths, 407 patients were split into 2 subgroups according to whether their LVEF was >50% (recovery group; n=341), or ≤50% (incomplete recovery group; n=66) at the chronic phase. Multivariate logistic regression analysis found that LVEF (odds ratio [OR]: 0.94; 95% confidence interval [CI]: 0.91-0.98; P<0.001) and C-reactive protein levels (OR: 1.11; 95% CI: 1.02-1.22; P=0.02) at discharge were independent predictors of incomplete recovery. At a median follow up of 52 days, a higher cardiovascular mortality was evident in the incomplete recovery group (16% vs. 0.6%; P<0.001). CONCLUSIONS: This study demonstrated that incomplete recovery after TTS is characterized by residual systemic inflammation and an increased cardiac mortality at follow up. Altogether, the present study findings determined that patients with persistent inflammation are a high-risk subgroup, and should be targeted in future clinical trials with specific therapies to attenuate inflammation.
Metformin-induced chemosensitization to cisplatin depends on P53 status and is inhibited by Jarid1b overexpression in non-small cell lung cancer cells
Tharcisio Citrangulo Tortelli, Rodrigo Esaki Tamura, Mara de Souza Junqueira, Janio da Silva Mororó, Silvina Odete Bustos, Renato Jose Mendonça Natalino, Shonagh Russell, Laurent Désaubry, Bryan Eric Strauss, Roger Chammas
Aging, 2021, 13 (18), pp.21914-21940. ⟨10.18632/aging.203528⟩
Article dans une revueAbstractMetformin has been tested as an anti-cancer therapy with potential to improve conventional chemotherapy. However, in some cases, metformin fails to sensitize tumors to chemotherapy. Here we test if the presence of P53 could predict the activity of metformin as an adjuvant for cisplatin-based therapy in non-small cell lung cancer (NSCLC). A549, HCC 827 (TP53 WT), H1299, and H358 (TP53 null) cell lines were used in this study. A549 cells were pre-treated with a sub-lethal dose of cisplatin to induce chemoresistance. The effects of metformin were tested both in vitro and in vivo and related to the ability of cells to accumulate Jarid1b, a histone demethylase involved in cisplatin resistance in different cancers. Metformin sensitized A549 and HCC 827 cells (but not H1299 and H358 cells) to cisplatin in a P53-dependent manner, changing its subcellular localization to the mitochondria. Treatment with a sub-lethal dose of cisplatin increased Jarid1b expression, yet downregulated P53 levels, protecting A549Res cells from metformin-induced chemosensitization to cisplatin and favored a glycolytic phenotype. Treatment with FL3, a synthetic flavagline, sensitized A549Res cells to cisplatin. In conclusion, metformin could potentially be used as an adjuvant for cisplatin-based therapy in NSCLC cells if wild type P53 is present.
Inhaled amikacin versus placebo to prevent ventilator-associated pneumonia: the AMIKINHAL double-blind multicentre randomised controlled trial protocol
Elsa Tavernier, Francois Barbier, Ferhat Meziani, Jean-Pierre Quenot, Jean-Etienne Herbrecht, Mickael Landais, Damien Roux, Philippe Seguin, David Schnell, Anne Veinstein, Benoît Veber, Sigismond Lasocki, Qin Lu, Gaetan Beduneau, Martine Ferrandiere, Claire Dahyot-Fizelier, Gaetan Plantefeve, Mai-Anh Nay, Hamid Merdji, Pascal Andreu, Laurent Vecellio, Grégoire Muller, Maria Cabrera, Deborah Le Pennec, Philippe Lanotte, Renaud Respaud, Nicolas Grégoire, Marie Leclerc, Julie Helms, Thierry Boulain, Jean-Claude Lacherade, Stephan Ehrmann
BMJ Open, 2021, 11 (9), 10 p. ⟨10.1136/bmjopen-2020-048591⟩
Article dans une revueAbstractIntroduction: Pre-emptive inhaled antibiotics may be effective to reduce the occurrence of ventilator-associated pneumonia among critically ill patients. Meta-analysis of small sample size trials showed a favourable signal. Inhaled antibiotics are associated with a reduced emergence of antibiotic resistant bacteria. The aim of this trial is to evaluate the benefit of a 3-day course of inhaled antibiotics among patients undergoing invasive mechanical ventilation for more than 3 days on the occurrence of ventilator-associated pneumonia. Methods and analysis: Academic, investigator-initiated, parallel two group arms, double-blind, multicentre superiority randomised controlled trial. Patients invasively ventilated more than 3 days will be randomised to receive 20 mg/kg inhaled amikacin daily for 3 days or inhaled placebo (0.9% Sodium Chloride). Occurrence of ventilator-associated pneumonia will be recorded based on a standardised diagnostic framework from randomisation to day 28 and adjudicated by a centralised blinded committee. Ethics and dissemination: The protocol and amendments have been approved by the regional ethics review board and French competent authorities (Comité de protection des personnes Ouest I, No.2016-R29). All patients will be included after informed consent according to French law. Results will be disseminated in international scientific journals. Trial registration numbers: EudraCT 2016-001054-17 and NCT03149640.
Influence of Depression and Anxiety on Non-Surgical Periodontal Treatment Outcomes: A 6-Month Prospective Study
Catherine Petit, Victor Anadon-Rosinach, Nicolas Tuzin, Jean-Luc Davideau, Olivier Huck
International Journal of Environmental Research and Public Health, 2021, 18 (17), pp.9394. ⟨10.3390/ijerph18179394⟩
Article dans une revueAbstractPeriodontal treatment could be worsened by risk factors. Depression and anxiety have been suggested as potentially influencing periodontal treatment outcomes. The aim of this study was to determine their association with non-surgical periodontal treatment outcomes in patients with generalized severe periodontitis (stage III/IV generalized periodontitis) at 6 months. A total of 68 patients diagnosed with generalized severe periodontitis were treated with scaling and root planing (SRP) and were followed at 3 and 6 months. The data of the 54 patients that followed the entire protocol were considered for analysis. Depression and anxiety levels were determined at baseline by the Beck Depression Inventory (BDI) and State-Trait Inventory (STAI) questionnaires. The association between psychological scores and periodontal parameters was evaluated by multivariate analysis. At 3 and 6 months, SRP induced an improvement for all periodontal parameters (plaque index (PI), bleeding on probing (BOP), periodontal probing depth (PPD) and clinical attachment loss (CAL)). BDI and STAI scores were associated with the evolution of PI, BOP, mean PPD and number of sites with PPD > 3 mm and with CAL > 3 mm. Depression and anxiety should be considered as risk factors for SRP and the identification of at-risk patients should be performed using well-established tools.
Sepsis expands a CD39+ plasmablast population that promotes immunosuppression via adenosine-mediated inhibition of macrophage antimicrobial activity
Daniele Carvalho Nascimento, Paula Ramos Viacava, Raphael Gomes Ferreira, Marina Alves Damaceno, Annie Rocío Piñeros, Paulo Henrique Melo, Paula Barbim Donate, Juliana Escher Toller-Kawahisa, Daniel Zoppi, Flávio Protásio Veras, Raphael Sanches Peres, Luísa Menezes-Silva, Diego Caetité, Antonio Edson Rocha Oliveira, Ícaro Maia Santos Castro, Gilles Kauffenstein, Helder Imoto Nakaya, Marcos Carvalho Borges, Dario Simões Zamboni, Denise Morais Fonseca, Jonas Augusto Rizzato Paschoal, Thiago Mattar Cunha, Valérie Quesniaux, Joel Linden, Fernando Queíroz Cunha, Bernhard Ryffel, José Carlos Alves-Filho
Immunity, 2021, 54 (9), pp.2024-2041.e8. ⟨10.1016/j.immuni.2021.08.005⟩
Article dans une revueAbstractSepsis results in elevated adenosine in circulation. Extracellular adenosine triggers immunosuppressive signaling via the A2a receptor (A2aR). Sepsis survivors develop persistent immunosuppression with increased risk of recurrent infections. We utilized the cecal ligation and puncture (CLP) model of sepsis and subsequent infection to assess the role of adenosine in post-sepsis immune suppression. A2aR-deficient mice showed improved resistance to post-sepsis infections. Sepsis expanded a subset of CD39hi B cells and elevated extracellular adenosine, which was absent in mice lacking CD39-expressing B cells. Sepsis-surviving B cell-deficient mice were more resistant to secondary infections. Mechanistically, metabolic reprogramming of septic B cells increased production of ATP, which was converted into adenosine by CD39 on plasmablasts. Adenosine signaling via A2aR impaired macrophage bactericidal activity and enhanced interleukin-10 production. Septic individuals exhibited expanded CD39hi plasmablasts and adenosine accumulation. Our study reveals CD39hi plasmablasts and adenosine as important drivers of sepsisinduced immunosuppression with relevance in human disease.
Metformin use is associated with a reduced risk of mortality in patients with diabetes hospitalised for COVID-19
Jean-Daniel Lalau, Abdallah Al-Salameh, S. Hadjadj, Thomas Goronflot, Nicolas Wiernsperger, Matthieu Pichelin, Ingrid Allix, C. Amadou, Olivier Bourron, Thierry Duriez, Jean-François Gautier, Anne Dutour, Céline Gonfroy, Didier Gouet, Michael Joubert, Ingrid Julier, Etienne Larger, Lucien Marchand, Michel Marre, Laurent Meyer, Frédérique Olivier, Gaëtan Prevost, Pascale Quiniou, Christelle Raffaitin-Cardin, Ronan Roussel, Pierre-Jean Saulnier, Dominique Seret-Begue, Charles Thivolet, Camille Vatier, Rachel Desailloud, Matthieu Wargny, Pierre Gourdy, Bertrand Cariou
Diabetes & Metabolism, 2021, 47 (5), pp.101216. ⟨10.1016/j.diabet.2020.101216⟩
Article dans une revueAbstractAIMS: Metformin exerts anti-inflammatory and immunosuppressive effects. We addressed the impact of prior metformin use on prognosis in patients with type 2 diabetes hospitalised for COVID-19. METHODS: CORONADO is a nationwide observational study that included patients with diabetes hospitalised for COVID-19 between March 10 and April 10, 2020 in 68 French centres. The primary outcome combined tracheal intubation and/or death within 7 days of admission. A Kaplan-Meier survival curve was reported for death up to day 28. The association between metformin use and outcomes was then estimated in a logistic regression analysis after applying a propensity score inverse probability of treatment weighting approach. RESULTS: Among the 2449 patients included, 1496 were metformin users and 953 were not. Compared with non-users, metformin users were younger with a lower prevalence of diabetic complications, but had more severe features of COVID-19 on admission. The primary endpoint occurred in 28.0% of metformin users (vs 29.0% in non-users, P = 0.6134) on day 7 and in 32.6% (vs 38.7%, P = 0.0023) on day 28. The mortality rate was lower in metformin users on day 7 (8.2 vs 16.1%, P \textless 0.0001) and on day 28 (16.0 vs 28.6%, P \textless 0.0001). After propensity score weighting was applied, the odds ratios for primary outcome and death (OR [95%CI], metformin users vs non-users) were 0.838 [0.649-1.082] and 0.688 [0.470-1.007] on day 7, then 0.783 [0.615-0.996] and 0.710 [0.537-0.938] on day 28, respectively. CONCLUSION: Metformin use appeared to be associated with a lower risk of death in patients with diabetes hospitalised for COVID-19.
BMI and pneumonia outcomes in critically ill COVID‐19 patients: An international multicenter study
Mikael Chetboun, Violeta Raverdy, Julien Labreuche, Arthur Simonnet, Florent Wallet, Cyrielle Caussy, Massimo Antonelli, Antonio Artigas, Gemma Goma, Ferhat Meziani, Julie Helms, Eleftherios Mylonakis, Mitchell M. Levy, Markos Kalligeros, Nicola Latronico, Simone Piva, Charles Cerf, Mathilde Neuville, Kada Klouche, R. Larcher, Fabienne Tamion, Emilie Occhiali, Morgane Snacken, Jean‐charles Preiser, Loay Kontar, Antoine Riviere, Stein Silva, Benjamine Sarton, Raphael Krouchi, Victoria Dubar, Leonidas Palaiodimos, Dimitrios Karamanis, Juliette Perche, Erwan L'Her, Luca Busetto, Dror Dicker, Shaul Lev, Alain Duhamel, Mercè Jourdain, François Pattou
Obesity, 2021, 29 (9), pp.1477-1486. ⟨10.1002/oby.23223⟩
Article dans une revueAbstractObjective: Previous studies have unveiled a relationship between the severity of coronavirus disease 2019 (COVID-19) pneumonia and obesity. The aims of this multicenter retrospective cohort study were to disentangle the association of BMI and associated metabolic risk factors (diabetes, hypertension, hyperlipidemia, and current smoking status) in critically ill patients with COVID-19. Methods: Patients admitted to intensive care units for COVID-19 in 21 centers (in Europe, Israel, and the United States) were enrolled in this study between February 19, 2020, and May 19, 2020. Primary and secondary outcomes were the need for invasive mechanical ventilation (IMV) and 28-day mortality, respectively. Results: A total of 1,461 patients were enrolled; the median (interquartile range) age was 64 years (40.9-72.0); 73.2% of patients were male; the median BMI was 28.1 kg/m2 (25.4-32.3); a total of 1,080 patients (73.9%) required IMV; and the 28-day mortality estimate was 36.1% (95% CI: 33.0-39.5). An adjusted mixed logistic regression model showed a significant linear relationship between BMI and IMV: odds ratio = 1.27 (95% CI: 1.12-1.45) per 5 kg/m2 . An adjusted Cox proportional hazards regression model showed a significant association between BMI and mortality, which was increased only in obesity class III (≥40; hazard ratio = 1.68 [95% CI: 1.06-2.64]). Conclusions: In critically ill COVID-19 patients, a linear association between BMI and the need for IMV, independent of other metabolic risk factors, and a nonlinear association between BMI and mortality risk were observed.
Ultrasound and Transcriptomics Identify a Differential Impact of Cisplatin and Histone Deacetylation on Tumor Structure and Microenvironment in a Patient-Derived In Vivo Model of Gastric Cancer
Aina Venkatasamy, Eric Guerin, Anais Blanchet, Christophe Orvain, Véronique Devignot, Matthieu Jung, Alain Jung, Marie-Pierre Chenard, Benoit Romain, Christian Gaiddon, Georg Mellitzer
Pharmaceutics, 2021, 13 (9), pp.1485. ⟨10.3390/pharmaceutics13091485⟩
Article dans une revueAbstractThe reasons behind the poor efficacy of transition metal-based chemotherapies (e.g., cisplatin) or targeted therapies (e.g., histone deacetylase inhibitors, HDACi) on gastric cancer (GC) remain elusive and recent studies suggested that the tumor microenvironment could contribute to the resistance. Hence, our objective was to gain information on the impact of cisplatin and the pan-HDACi SAHA (suberanilohydroxamic acid) on the tumor substructure and microenvironment of GC, by establishing patient-derived xenografts of GC and a combination of ultrasound, immunohistochemistry, and transcriptomics to analyze. The tumors responded partially to SAHA and cisplatin. An ultrasound gave more accurate tumor measures than a caliper. Importantly, an ultrasound allowed a noninvasive real-time access to the tumor substructure, showing differences between cisplatin and SAHA. These differences were confirmed by immunohistochemistry and transcriptomic analyses of the tumor microenvironment, identifying specific cell type signatures and transcription factor activation. For instance, cisplatin induced an “epithelial cell like” signature while SAHA favored a “mesenchymal cell like” one. Altogether, an ultrasound allowed a precise follow-up of the tumor progression while enabling a noninvasive real-time access to the tumor substructure. Combined with transcriptomics, our results underline the different intra-tumoral structural changes caused by both drugs that impact differently on the tumor microenvironment.
Effect of low-level gallium aluminum arsenide laser therapy on the chewing performance and pain perception of patients with systemic lupus erythematosus: A randomized controlled clinical trial
Merve Benli, Olivier Huck, Mutlu Özcan
Cranio -Chattanooga Tn-, 2021, 42 (4), pp.411-420. ⟨10.1080/08869634.2021.1971888⟩
Article dans une revueAbstractObjective: To evaluate the effect of low-level laser therapy (LLLT) on pain intensity (PI) and chewing performance (CP) in systemic lupus erythematosus (SLE) patients with myogenic temporomandibular disorder (TMD). Methods: Ninety-one patients were randomly allocated to three groups: Group L (intervention), Group P (placebo), and Group C (control). Outcomes were PI (assessed with visual analog scale (VAS)) and CP (assessed with the geometric mean diameter (GMD) of crushed test food). Measurements were performed at T0 (before the LLLT), T1 (immediately after the LLLT), and T2 (1-month follow-up). Data were analyzed using Generalized Linear Models, Kruskal-Wallis, and Friedman tests. Results: For T1 and T2, Group L demonstrated the lowest values for both GMD (6283.7 ± 257.2 µm; 6382.7 ± 303.7 µm) and VAS (5;6) (p < 0.001). Conclusion: LLLT was an effective therapeutic approach in reducing pain and improving CP for one month in SLE patients with myogenic TMD.
Preventing atrial fibrillation by combined right isthmus ablation and cryoballoon pulmonary vein isolation in patients with typical atrial flutter: PAF‐CRIOBLAF study
Frédéric Anselme, Arnaud Savouré, Nicolas Clémenty, Olivier Cesari, Dominique Pavin, Laurence Jesel, Pascal Defaye, Serge Boveda, Philippe Rivat, Jacques Mansourati, Alexis Mechulan, Jean‐pierre Cebron, Gilles Lande, Michael Bubenheim Scd, Antoine Milhem
Journal of Arrhythmia, 2021, 37 (5), pp.1303 - 1310. ⟨10.1002/joa3.12626⟩
Article dans une revueAbstractBackground Although less common, typical atrial flutter shares similar pathophysiological roots with atrial fibrillation. Following successful cavo-tricuspid isthmus ablation using radiofrequency, many patients, however, develop atrial fibrillation in the mid-to-long-term. This study sought to assess whether pulmonary vein isolation conducted at the same time as cavo-tricuspid isthmus ablation would significantly modify the atrial fibrillation burden upon follow-up in patients suffering from typical atrial flutter. Methods This was a multicenter randomized controlled study involving typical atrial flutter patients with history of non-predominant atrial fibrillation (1 atrial fibrillation episode only, in 67% of population) who were scheduled for cavo-tricuspid isthmus radiofrequency ablation. Patients were randomly assigned to either undergo cavo-tricuspid isthmus ablation alone or cavo-tricuspid isthmus plus pulmonary vein isolation (CTI+). Pulmonary vein isolation was performed using cryoballoon technology. An outpatient consultation with ECG and 1-week Holter monitoring was performed at 3, 6 months, 1 year, and 2 years postprocedure. The primary endpoint was atrial fibrillation recurrences lasting more than 30 s at 2 years postablation. Results Of the patients enrolled, 36 were included in each group. At 2-year follow-up, the atrial fibrillation recurrence rate was significantly higher in the CTI vs CTI+group (25/36, 69% vs. 12/36, 33% respectively; P < .001), with similar typical atrial flutter recurrence rates. There were no differences in undesirable events, except for transient phrenic nerve palsy reported from three CTI+patients (8.3%). Conclusion Pulmonary vein isolation using cryoballoon technology was proven to significantly reduce the atrial fibrillation incidence at 2 years postcavo-tricuspid isthmus ablation. .
Re: Two centres' experience with lung cancer resection in patients with advanced non-small-cell lung cancer following treatment with immune checkpoint inhibitors: safety and clinical outcomes
Bertrand Mennecier, Anne Olland, Celine Mascaux, Pierre-Emmanuel Falcoz
European Journal of Cardio-Thoracic Surgery, 2021, ⟨10.1093/ejcts/ezab399⟩
Article dans une revueAbstractNo abstract available
Neutrophil-to-lymphocyte ratio is correlated to driver gene mutations in surgically-resected non-small cell lung cancer and its post-operative evolution impacts outcomes
Joseph Seitlinger, Mathilde Prieto, Francesco Guerrera, Arthur Streit, Guillaume Gauchotte, Joelle Siat, Pierre-Emmanuel Falcoz, Gilbert Massard, Lorenzo Ferri, Jonathan Spicer, Stéphane Renaud
Clinical lung cancer, 2021, 23 (1), ⟨10.1016/j.cllc.2021.08.001⟩
Article dans une revueAbstractBACKGROUND: We sought to evaluate prognostic value of neutrophil-to-lymphocyte ratio (NLR) in surgically resected non-small cell lung cancer (NSCLC) and its correlation to oncogenic drivers. We retrospectively reviewed data of patients who underwent anatomic lung resection for NSCLC and whose mutational status was known, from 4 department of thoracic surgery, over the period 2008 to 2019. Primary endpoints were overall survival (OS) and time to recurrence (TTR). Clinical and molecular factors were investigated in the univariate and multivariate analysis for their association with the primary endpoints. RESULTS: 2027 patients were included in the analysis. Correlations between NLR and OS (R2=0.21), NLR and TTR (R2=0.085) were significant (P<0.0001), with corresponding Pearson R of -0.46 (P<0.0001) and -0.292 (P<0.001), respectively. ROC curve analysis defined NLR cut-off value at 4.07. In the univariable analysis, the median OS was 66 months (95% CI: 62.94 - 69.06) in case of pre-operative NLR ≤ 4.07 and 38 months (95% CI: 36.73 - 39.27) in case of pre-operative NLR > 4.07 (P<0.0001), with corresponding 5-y OS of 72% and 29% respectively. Median TTR was associated with pre-operative NLR. Median TTR was 25 months (95% CI: 21.52 - 28.48) in case of pre-operative NLR ≤ 4.07 and 17 months (95% CI: 16.04 - 17.96) in case of pre-operative NLR > 4.07 (P<0.0001), with corresponding 5-years TTR of 18% and 9% respectively. Significant correlations between NLR >4.07 and KRAS (Cramer's V = 0.082, P < 0.0001) and EGFR mutations (Cramer's V = 0.064, P = 0.004) were observed. CONCLUSIONS: Low pre-operative NLR is associated with longer OS in patients with resected NSCLC. Low pre-operative NLR is not associated with longer TTR in multivariate analysis. Correlation between the high NLR and KRAS/EGFR mutations were observed.
Critical illness-associated cerebral microbleeds for patients with severe COVID-19: etiologic hypotheses
François Lersy, Thibault Willaume, Jean-Christophe Brisset, Olivier Collange, Julie Helms, Francis Schneider, Agathe Chammas, Alexandre Willaume, Nicolas Meyer, Mathieu Anheim, François Cotton, Stephane Kremer
Journal of Neurology, 2021, 268 (8), pp.2676-2684. ⟨10.1007/s00415-020-10313-8⟩
Article dans une revueAbstractBackground and purpose: During the COVID-19 outbreak, the presence of extensive white matter microhemorrhages was detected by brain MRIs. The goal of this study was to investigate the origin of this atypical hemorrhagic complication. Methods: Between March 17 and May 18, 2020, 80 patients with severe COVID-19 infections were admitted for acute respiratory distress syndrome to intensive care units at the University Hospitals of Strasbourg for whom a brain MRI for neurologic manifestations was performed. 19 patients (24%) with diffuse microhemorrhages were compared to 18 control patients with COVID-19 and normal brain MRI. Results: The first hypothesis was hypoxemia. The latter seemed very likely since respiratory failure was longer and more pronounced in patients with microhemorrhages (prolonged endotracheal intubation (p = 0.0002), higher FiO2 (p = 0.03), increased use of extracorporeal membrane oxygenation (p = 0.04)). A relevant hypothesis, the role of microangiopathy, was also considered, since patients with microhemorrhages presented a higher increase of the D-Dimers (p = 0.01) and a tendency to more frequent thrombotic events (p = 0.12). Another hypothesis tested was the role of kidney failure, which was more severe in the group with diffuse microhemorrhages (higher creatinine level [median of 293 µmol/L versus 112 µmol/L, p = 0.04] and more dialysis were introduced in this group during ICU stay [12 versus 5 patients, p = 0.04]). Conclusions: Blood-brain barrier dysfunction secondary to hypoxemia and high concentration of uremic toxins seems to be the main mechanism leading to critical illness-associated cerebral microbleeds, and this complication remains to be frequently described in severe COVID-19 patients. Keywords: COVID-19; Hypoxemia; Kidney failure; MRI; Microhemorrhages.
Characterization of a hyaluronic acid-based hydrogel containing an extracellular oxygen carrier (M101) for periodontitis treatment
Hayriye Özcelik, Fareeha Batool, Maïwenn Corre, Alexandre Garlaschelli, Guillaume Conzatti, Céline Stutz, Catherine Petit, Eric Delpy, Franck Zal, Elisabeth Leize-Zal, Olivier Huck
International Journal of Pharmaceutics, 2021, 605, ⟨10.1016/j.ijpharm.2021.120810⟩
Article dans une revueAbstractPeriodontitis is an inflammatory disease associated with anaerobic bacteria leading to the destruction of tooth-supporting tissues. Porphyromonas gingivalis is a keystone anaerobic pathogen involved in the development of severe lesions. Periodontal treatment aims to suppress subgingival biofilms and to restore tissue homeostasis. However, hypoxia impairs wound healing and promotes bacterial growth within periodontal pocket. This study aimed to evaluate the potential of local oxygen delivery through the local application of a hydrogel containing Arenicola marina’s hemoglobin (M101). To this end, a hydrogel (xanthan (2%), hyaluronic acid (1%)) containing M101 (1–2 g/L) (Xn(2%)-HA(1%)-M101) was prepared and characterized. Rheological tests revealed the occurrence of high deformation without the loss of elastic properties. Dialysis experiment revealed that incorporation of M101 within the gel did not modify its oxygen transportation properties. Samples of release media of the gels (1 g/L (10%) and 2 g/L (10%) M101) decreased significantly the growth of P. gingivalis after 24 h validating its antibacterial effect. Metabolic activity measurement confirmed the cytocompatibility of Xn(2%)-HA(1%)-M101. This study suggests the therapeutic interest of Xn(2%)-HA(1%)-M101 gel to optimize treatment of periodontitis with a non-invasive approach.
Mechanistic Illustration: How Newly-Formed Blood Vessels Stopped by the Mineral Blocks of Bone Substitutes Can Be Avoided by Using Innovative Combined Therapeutics
Fabien Bornert, François Clauss, Guoqiang Hua, Ysia Idoux-Gillet, Laetitia Keller, Gabriel Fernandez de Grado, Damien Offner, Rana Smaida, Quentin Wagner, Florence Fioretti, Sabine Bopp-Kuchler, Georg Schulz, Wolfgang Wenzel, Luca Gentile, Laurent Risser, Bert Müller, Olivier Huck, Nadia Benkirane-Jessel
Biomedicines, 2021, 9 (8), pp.952. ⟨10.3390/biomedicines9080952⟩
Article dans une revueAcute kidney injury and acute kidney recovery following Transcatheter Aortic Valve Replacement
Marilou Peillex, Benjamin Marchandot, Kensuke Matsushita, Eric Prinz, Sebastien Hess, Antje Reydel, Marion Kibler, Adrien Carmona, Antonin Trimaille, Joe Heger, Hélène Petit-Eisenmann, Annie Trinh, Laurence Jesel, Patrick Ohlmann, Olivier Morel
PLoS ONE, 2021, 16 (8), pp.e0255806. ⟨10.1371/journal.pone.0255806⟩
Article dans une revueAbstractBackground Acute kidney injury (AKI) is associated with a dismal prognosis in Transcatheter Aortic Valve replacement (TAVR). Acute kidney recovery (AKR), a phenomenon reverse to AKI has recently been associated with better outcomes. Methods: Between November 2012 to May 2018, we explored consecutive patients referred to our Heart Valve Center for TAVR. AKI was defined according to the VARC-2 definition. Mirroring the VARC-2 definition of AKI, AKR was defined as a decrease in serum creatinine (≥50%) or ≥25% improvement in GFR up to 72 hours after TAVR. Results AKI and AKR were respectively observed in 8.3 and 15.7% of the 574 patients included. AKI and AKR patients were associated to more advanced kidney disease at baseline. At a median follow-up of 608 days (range 355-893), AKI and AKR patients experienced an increased cardiovascular mortality compared to unchanged renal function patients (14.6% and 17.8% respectively, vs. 8.1%, CI 95%, p<0.022). Chronic kidney disease, (HR: 3.9; 95% CI 1.7-9.2; p < 0.001) was the strongest independent factor associated with AKI similarly to baseline creatinine level (HR: 1; 95% CI 1 to 1.1 p < 0.001) for AKR. 72-hours post procedural AKR (HR: 2.26; 95% CI 1.14 to 4.88; p = 0.021) was the strongest independent predictor of CV mortality. Conclusions: Both AKR and AKI negatively impact long term clinical outcomes of patients undergoing TAVR.
Slowly absorbable mesh in contaminated incisional hernia repair: results of a French multicenter study
Diane Charleux-Muller, Romane Hurel, Thibaut Fabacher, Cecile Brigand, Serge Rohr, Simone Manfredelli, Guillaume Passot, Pablo Ortega-Deballon, Vincent Dubuisson, Yohann Renard, Benoît Romain
Hernia, 2021, 25 (4), pp.1051-1059. ⟨10.1007/s10029-020-02366-5⟩
Article dans une revueAbstractPURPOSE: To analyze the postoperative morbidity and 1-year recurrence rate of incisional hernia repair using a biosynthetic long-term absorbable mesh in patients at higher risk of surgical infection in a contaminated surgical field. METHODS: All patients undergoing incisional hernia repair in a contaminated surgical field with the use of a biosynthetic long-term absorbable mesh (Phasix®) between May 2016 and September 2018 at six participating university centers were included in this retrospective cohort and were followed-up until September 2019. Regarding the risk of surgical infection, patients were classified according to the modified Ventral Hernia Working Group classification. Preoperative, operative and postoperative data were collected. All patients' surgical site infections (SSIs) and occurrences (SSOs) and recurrence rates were the endpoints of the study. RESULTS: Two hundred and fifteen patients were included: 170 with mVHWG grade 3 (79%) and 45 with mVHWG grade 2 (21%). The SSI and SSO rates at 12 months were 22.3% and 39.5%, respectively. According to the Dindo-Clavien classification, 43 patients (20.0%) had at least one minor complication, and 57 patients (26.5%) had at least one major complication. Among the 121 patients (56.3%) having at least 1 year of follow-up, the clinical recurrence rate was 12.4%. Multivariate analysis showed that a concomitant gastrointestinal procedure was an independent risk factor for surgical infection (OR = 2.61), and an emergency setting was an independent risk factor for major complications (OR = 11.9). CONCLUSION: The use of a biosynthetic absorbable mesh (Phasix®) is safe in a contaminated surgical field, with satisfying immediate postoperative and 1-year results. TRIAL REGISTRATION: The study is registered on Clinical Trial ID: NCT04132986.
A Translational Investigation of IFN-alpha and STAT1 Signaling in Endothelial Cells during Septic Shock Provides Therapeutic Perspectives
Raphaël Clere-Jehl, Hamid Merdji, Mohamad Kassem, Cecile Macquin, Aurore de Cauwer, Alicia Sibony, Kei Kurihara, Laetitia Minniti, Cherine Abou-Faycal, Seiamak Bahram, Ferhat Meziani, Julie Helms, Philippe Georgel
American Journal of Respiratory Cell and Molecular Biology, 2021, 65 (2), pp.167-175. ⟨10.1165/rcmb.2020-0401OC⟩
Article dans une revueAbstractSeptic shock and disseminated intravascular coagulation (DIC) arc known to be characterized by an endothelial cell dysfunction. The molecular mechanisms underlying this relationship are, however, poorly understood. In this work, we aimed to investigate human circulating IFN-alpha in patients with septic shock-induced DIC and tested the potential role of endothelial Stat1 (signal transducer and activator of transcription 1) as a therapeutic target in a mouse model of sepsis. For this, circulating type I, type II, and type III IFNs and procoagulant microvesides were quantified in a prospective cohort of patients with septic shock. Next, we used a septic shock model induced by cecal ligation and puncture in wild-type mice, in Ifnarl (type I IFN receptor subunit 1)-knockout mice, and in Stall conditional knockout mice. In human samples, we observed higher concentrations of circulating IFN-a and IFN-al in patients with DIC compared with patients without DIC, whereas concentrations of IFN-beta, IFN-gamma, IFN-lambda 1, IFN-X2, and IFN-lambda 3 were not different. IFN-a concentration was positively correlated with CD105 microvesicle concentrations, reflecting endothelial injury. In Ifnarl mice, cecal ligation and puncture did not induce septic shock and was characterized by lesser endothelial cell injury, with lower aortic inflammatory cytokine expression, endothelial inflammatory-related gene expression, and fibrinolysis. In mice in which Stat1 was specifically ablated in endothelial cells, a marked protection against sepsis was also observed, suggesting the relevance of an endothelium-targeted strategy. Our work highlights the key roles of type I IFNs as pathogenic players in septic shock-induced DIC and the potential pertinence of endothelial STAT1 as a therapeutic target.
Periodontal (formerly type VIII ) Ehlers–Danlos syndrome: Description of 13 novel cases and expansion of the clinical phenotype
Salima El Chehadeh, Anne Legrand, Corinne Stoetzel, Véronique Geoffroy, Clarisse Billon, Salma Adham, Xavier Jeunemaître, Roland Jaussaud, Jean Muller, Elise Schaefer, Karelle Benistan, Sébastien Gaertner, Agnès Bloch‐zupan, Aymeric Courval, Marie‐cécile Manière, Catherine Petit, Anne‐claire Bursztejn, Laurence Bal, Anthony Reyre, Agathe Chammas, Tiffany Busa, Hélène Dollfus, Dan Lipsker
Clinical Genetics, 2021, 100 (2), pp.206-212. ⟨10.1111/cge.13972⟩
Article dans une revueCDX2 inducible microRNAs sustain colon cancer by targeting multiple DNA damage response pathway factors
Swati Priya, Ekjot Kaur, Swati Kulshrestha, Awadhesh Pandit, Isabelle Gross, Nitin Kumar, Himanshi Agarwal, Aamir Khan, Radhey Shyam, Prakash Bhagat, Jyothi S. Prabhu, Perumal Nagarajan, S. V. S. Deo, Avinash Bajaj, Jean-Noël Freund, Arnab Mukhopadhyay, Sagar Sengupta
Journal of Cell Science, 2021, 134 (15), ⟨10.1242/jcs.258601⟩
Article dans une revueAbstractMeta-analysis of transcripts in colon adenocarcinoma patient tissues led to the identification of a DNA damage responsive miR signature called DNA damage sensitive miRs (DDSMs). DDSMs were experimentally validated in the cancerous colon tissues obtained from an independent cohort of colon cancer patients and in multiple cellular systems with high levels of endogenous DNA damage. All the tested DDSMs were transcriptionally upregulated by a common intestine-specific transcription factor, CDX2. Reciprocally, DDSMs were repressed via the recruitment of HDAC1/2-containing complexes onto the CDX2 promoter. These miRs downregulated multiple key targets in the DNA damage response (DDR) pathway, namely BRCA1, ATM, Chk1 (also known as CHEK1) and RNF8. CDX2 directly regulated the DDSMs, which led to increased tumor volume and metastasis in multiple preclinical models. In colon cancer patient tissues, the DDSMs negatively correlated with BRCA1 levels, were associated with decreased probability of survival and thereby could be used as a prognostic biomarker. This article has an associated First Person interview with the first author of the paper.
Kinetic Glomerular Filtration Rate Equations in Patients With Shock: Comparison With the Iohexol-Based Gold-Standard Method
Maxime Desgrouas, Hamid Merdji, Anne Bretagnol, Chantal Barin-Le Guellec, Jean-Michel Halimi, Stephan Ehrmann, Charlotte Salmon Gandonnière
Critical Care Medicine, 2021, 49 (8), pp.e761-e770. ⟨10.1097/ccm.0000000000004946⟩
Article dans une revueAbstractOBJECTIVES: Static glomerular filtration rate formulas are not suitable for critically ill patients because of nonsteady state glomerular filtration rate and variation in the volume of distribution. Kinetic glomerular filtration rate formulas remain to be evaluated against a gold standard. We assessed the most accurate kinetic glomerular filtration rate formula as compared to iohexol clearance among patients with shock. DESIGN: Retrospective multicentric study. SETTING: Three French ICUs in tertiary teaching hospitals. PATIENTS: Fifty-seven patients within the first 12 hours of shock. MEASUREMENTS AND MAIN RESULTS: On day 1, we compared kinetic glomerular filtration rate formulas with iohexol clearance, with or without creatinine concentration correction according to changes in volume of distribution and ideal body weight. We analyzed three static glomerular filtration rate formulas (Cockcroft and Gault, modification of diet in renal disease, and Chronic Kidney Disease–Epidemiology Collaboration), urinary creatinine clearance, and seven kinetic glomerular filtration rate formulas (Jelliffe, Chen, Chiou and Hsu, Moran and Myers, Yashiro, Seelhammer, and Brater). We evaluated 33 variants of these formulas after applying corrective factors. The bias ranged from 12 to 47 mL/min/1.73 m 2 . Only the Yashiro equation had a lower bias than urinary creatinine clearance before applying corrective factors (15 vs 20 mL/min/1.73 m 2 ). The corrected Moran and Myers formula had the best mean bias, 12 mL/min/1.73 m 2 , but wide limits of agreement (–50 to 73). The corrected Moran and Myers value was within 30% of iohexol-clearance–measured glomerular filtration rate for 27 patients (47.4%) and was within 10% for nine patients (15.8%); other formulas showed even worse accuracy. CONCLUSIONS: Kinetic glomerular filtration rate equations are not accurate enough for glomerular filtration rate estimation in the first hours of shock, when glomerular filtration rate is greatly decreased. They can both under- or overestimate glomerular filtration rate, with a trend to overestimation. Applying corrective factors to creatinine concentration or volume of distribution did not improve accuracy sufficiently to make these formulas reliable. Clinicians should not use kinetic glomerular filtration rate equations to estimate glomerular filtration rate in patients with shock.
Updates on Anticancer Therapy-Mediated Vascular Toxicity and New Horizons in Therapeutic Strategies
Po-Yen Hsu, Aynura Mammadova, Nadia Benkirane-Jessel, Laurent Désaubry, Canan Nebigil
Frontiers in Cardiovascular Medicine, 2021, 8, ⟨10.3389/fcvm.2021.694711⟩
Article dans une revueAbstractVascular toxicity is a frequent adverse effect of current anticancer chemotherapies and often results from endothelial dysfunction. Vascular endothelial growth factor inhibitors (VEGFi), anthracyclines, plant alkaloids, alkylating agents, antimetabolites, and radiation therapy evoke vascular toxicity. These anticancer treatments not only affect tumor vascularization in a beneficial manner, they also damage ECs in the heart. Cardiac ECs have a vital role in cardiovascular functions including hemostasis, inflammatory and coagulation responses, vasculogenesis, and angiogenesis. EC damage can be resulted from capturing angiogenic factors, inhibiting EC proliferation, survival and signal transduction, or altering vascular tone. EC dysfunction accounts for the pathogenesis of myocardial infarction, atherothrombosis, microangiopathies, and hypertension. In this review, we provide a comprehensive overview of the effects of chemotherapeutic agents on vascular toxicity leading to hypertension, microvascular rarefaction thrombosis and atherosclerosis, and affecting drug delivery. We also describe the potential therapeutic approaches such as vascular endothelial growth factor (VEGF)-B and prokineticin receptor-1 agonists to maintain endothelial function during or following treatments with chemotherapeutic agents, without affecting anti-tumor effectiveness.
Detection of Pneumocystis jirovecii in Patients with Severe COVID-19: Diagnostic and Therapeutic Challenges
Victor Gerber, Yvon Ruch, Thiên-Nga Chamaraux-Tran, Walid Oulehri, Francis Schneider, Veronique Lindner, Valentin Greigert, Julie Denis, Julie Brunet, François Danion
Journal of Fungi, 2021, 7 (8), pp.585. ⟨10.3390/jof7080585⟩
Article dans une revueAbstractCases of Pneumocystis jirovecii pneumonia (PCP) in patients suffering from COVID-19 were described in patients with various comorbidities and outcomes. The diagnosis of PCP in these patients is difficult due to clinical and radiological similarities. We carried out this study in order to better describe potentially at-risk patients and their outcomes. We retrospectively analyzed all patients with a P. jirovecii PCR performed in bronchoalveolar lavage fluid, tracheal aspirate, or sputum within a month after the COVID-19 diagnosis. Fifty-seven patients with COVID-19 infection were tested for P. jirovecii. Among 57 patients with COVID-19, four patients had a concomitant positive P. jirovecii PCR. These four patients were elderly with a mean age of 78. Two patients were immunocompromised, and the two others presented only diabetes mellitus. Three patients presented an ARDS requiring transfer to the ICU and mechanical ventilation. All patients presented lymphocytopenia. Three patients had probable PCP, and one had proven PCP. All patients died within two months after hospital admission. These co-infections are rare but severe, therefore, PCP should be considered in case of worsening of the condition of patients with severe COVID-19.
A standard of care for individuals with PIK3CA-related disorders: An international expert consensus statement
Sofia Douzgou, Myfanwy Rawson, Eulalia Baselga, Moise Danielpour, Laurence Faivre, Alon Kashanian, Kim M. Keppler-Noreuil, Paul Kuentz, Grazia M. S. Mancini, Marie Cecile Maniere, Victor Martinez-Glez, Victoria E. Parker, Robert K. Semple, Siddharth Srivastava, Pierre Vabres, Marie-Claire Y. de Wit, John M. Graham, Jill Clayton-Smith, Ghayda M. Mirzaa, Leslie G. Biesecker
Clinical Genetics, 2021, 101 (1), pp.32-47. ⟨10.1111/cge.14027⟩
Article dans une revueAbstractGrowth promoting variants in PIK3CA cause a spectrum of developmental disorders, depending on the developmental timing of the mutation and tissues involved. These phenotypically heterogeneous entities have been grouped as PIK3CA-Related Overgrowth Spectrum disorders (PROS). Deep sequencing technologies have facilitated detection of low-level mosaic, often necessitating testing of tissues other than blood. Since clinical management practices vary considerably among healthcare professionals and services across different countries, a consensus on management guidelines is needed. Clinical heterogeneity within this spectrum leads to challenges in establishing management recommendations, which must be based on patient-specific considerations. Moreover, as most of these conditions are rare, affected families may lack access to the medical expertise that is needed to help address the multi-system and often complex medical issues seen with PROS. In March 2019, macrocephaly-capillary malformation (M-CM) patient organizations hosted an expert meeting in Manchester, United Kingdom, to help address these challenges with regards to M-CM syndrome. We have expanded the scope of this project to cover PROS and developed this consensus statement on the preferred approach for managing affected individuals based on our current knowledge.
Reply to "Patients with aortic stenosis exhibit early improved endothelial function following transcatheter aortic valve replacement: The eFAST study" by Comella et al.
Antonin Trimaille, Sandy Hmadeh, Kensuke Matsushita, Valerie Schini-Kerth, Olivier Morel
International Journal of Cardiology, 2021, 334, pp.96-96. ⟨10.1016/j.ijcard.2021.04.058⟩
Article dans une revueSurvival and Predictive Factors of Chemotherapy With FOLFIRINOX as First-Line Therapy in Metastatic Pancreatic Cancer: A Retrospective Multicentric Analysis
Bénédicte Caron, Jean-Marie Reimund, Meher Ben Abdelghani, Daniel Sondag, Monique Noirclerc, Bernard Duclos, Jean-Emmanuel Kurtz, Marlène Nguimpi-Tambou
Pancreas, 2021, 50 (6), pp.803-806. ⟨10.1097/MPA.0000000000001837⟩
Article dans une revueAbstractOBJECTIVES: The use of FOLFIRINOX (a combination of oxaliplatin, irinotecan, fluorouracil, and leucovorin) is one of the therapeutic standards in pancreatic adenocarcinoma. We analyzed progression-free survival (PFS) and overall survival (OS) and their predictive factors in patients treated with FOLFIRINOX as first-line therapy in metastatic pancreatic cancer. METHODS: This multicenter retrospective analysis included patients treated with FOLFIRINOX between 2011 and 2015. The Kaplan-Meier method was used to estimate OS and PFS. The statistical comparison for survival was performed by the log-rank test. Predictive factors were estimated in multivariate analysis with the use of a Cox model. RESULTS: One hundred and thirty-six patients were included (74 men, 62 women; median age, 62 years [range, 29-74 years]). The median PFS was 5.97 months (95% confidence interval, 4.4-6.63 months). The median OS was 8.93 months (95% confidence interval, 7.4-10.07 months). Prognostic factors in multivariate analysis were the use of granulocyte colony-stimulating factor, which appeared to be a good prognostic factor. Dose intensity of oxaliplatin (≥74.48%) and dose intensity of bolus of fluorouracil (>6.9%) appeared as pejorative factors. CONCLUSIONS: In patients with metastatic pancreatic adenocarcinoma treated with FOLFIRINOX in first line, dose modifications at the onset of adverse effects and early use of granulocyte-colony stimulating factor seem to be associated with a better survival.
Gold(III) to Ruthenium(III) Metal Exchange in Dithiocarbamato Complexes Tunes Their Biological Mode of Action for Cytotoxicity in Cancer Cells
Maria Dalla Pozza, Christophe Orvain, Leonardo Brustolin, Nicolò Pettenuzzo, Chiara Nardon, Christian Gaiddon, Dolores Fregona
Molecules, 2021, 26 (13), pp.4073. ⟨10.3390/molecules26134073⟩
Article dans une revueAbstractMalignant tumors have affected the human being since the pharaoh period, but in the last century the incidence of this disease has increased due to a large number of risk factors, including deleterious lifestyle habits (i.e., smoking) and the higher longevity. Many efforts have been spent in the last decades on achieving an early stage diagnosis of cancer, and more effective cures, leading to a decline in age-standardized cancer mortality rates. In the last years, our research groups have developed new metal-based complexes, with the aim to obtain a better selectivity for cancer cells and less side effects than the clinically established reference drug cisplatin. This work is focused on four novel Au(III) and Ru(III) complexes that share the piperidine dithiocarbamato (pipe-DTC) as the ligand, in a different molar ratio. The compounds [AuCl2(pipeDTC)], [Au(pipeDTC)2]Cl, [Ru(pipeDTC)3] and β-[Ru2(pipeDTC)5] have been synthesized and fully characterized by several chemical analyses. We have then investigated their biological properties in two different cell lines, namely, AGS (gastric adenocarcinoma) and HCT116 (colon carcinomas), showing significant differences among the four compounds. First, the two gold-based compounds and β-[Ru2(pipeDTC)5] display IC50 in the µM range, significantly lower than cisplatin. Second, we showed that [AuCl2(pipeDTC)] and β-[Ru2(pipeDTC)5]Cl drive different molecular mechanisms. The first was able to induce the protein level of the DNA damage response factor p53 and the autophagy protein p62, in contrast to the second that induced the ATF4 protein level, but repressed p62 expression. This study highlights that the biological activity of different complexes bringing the same organic ligand depends on the electronic and structural properties of the metal, which are able to fine tune the biological properties, giving us precious information that can help to design more selective anticancer drugs.
Hepatitis B virus compartmentalization and single-cell differentiation in hepatocellular carcinoma
Frank Juehling, Antonio Saviano, Clara Ponsolles, Laura Heydmann, Emilie Crouchet, Sarah C Durand, Houssein El Saghire, Emanuele Felli, Veronique Lindner, Patrick Pessaux, Nathalie Pochet, Catherine Schuster, Eloi Verrier, Thomas F. Baumert
Life Science Alliance, 2021, 4 (9), ⟨10.26508/lsa.202101036⟩
Article dans une revueAbstractChronic hepatitis B virus (HBV) infection is a major cause of hepatocellular carcinoma (HCC) world-wide. The molecular mechanisms of viral hepatocarcinogenesis are still partially understood. Here, we applied two complementary single-cell RNA-sequencing protocols to investigate HBV-HCC host cell interactions at the single cell level of patient-derived HCC. Computational analyses revealed a marked HCC heterogeneity with a robust and significant correlation between HBV reads and cancer cell differentiation. Viral reads significantly correlated with the expression of HBVdependency factors such as HLF in different tumor compartments. Analyses of virus-induced host responses identified previously undiscovered pathways mediating viral carcinogenesis, such as E2F- and MYC targets as well as adipogenesis. Mapping of fused HBV-host cell transcripts allowed the characterization of integration sites in individual cancer cells. Collectively, single-cell RNASeq unravels heterogeneity and compartmentalization of both, virus and cancer identifying new candidate pathways for viral hepatocarcinogenesis. The perturbation of pro-carcinogenic gene expression even at low HBV levels highlights the need of HBV cure to eliminate HCC risk.
Hémostase et COVID-19
Hamid Merdji, Laurent Sattler, Sibylle Cunat, Ferhat Meziani, Julie Helms
Médecine Intensive Réanimation, 2021, 30 (Hors-série 1), pp.35-42. ⟨10.37051/mir-00062⟩
Article dans une revueAbstractLes patients atteints de pneumopathie grave dans le cadre de COVID-19 sont à haut risque de complications thrombotiques, en rapport avec une coagulopathie induite par le SARS-CoV-2, ce qui aggrave leur pronostic. Les mécanismes physiopathologiques de cette coagulopathie incluent une dysfonction endothéliale en partie expliquée par un état hyper-inflammatoire et l’activation de la coagulation qui en découle. Les bilans standards d’hémostase ne semblent pas suffisants pour évaluer ce sur-risque thrombotique et la thromboprophylaxie de ces patients doit probablement être renforcée.
The Proteolytic Inactivation of Protein Z-Dependent Protease Inhibitor by Neutrophil Elastase Might Promote the Procoagulant Activity of Neutrophil Extracellular Traps in Sepsis
Elsa P Bianchini, Mahita Razanakolona, Julie Helms, Fouzia Zouiti, Amélie Couteau-Chardon, Viviana Marin-Esteban, Luc de Chaisemartin, Allan De- Carvalho, Roselyne Bironien, Sylvie Chollet-Martin, Cécile V Denis, Jean-Luc Diehl, Marc Vasse, Ferhat Meziani, Delphine Borgel
Thrombosis and Haemostasis, 2021, Online ahead of print. ⟨10.1055/a-1530-3980⟩
Article dans une revueAbstractSeptic shock is the archetypal clinical setting in which extensive crosstalk between inflammation and coagulation dysregulates the latter. The main anticoagulant systems are systematically impaired, depleted, and/or downregulated. Protein Z-dependent protease inhibitor (ZPI) is an anticoagulant serpin that not only targets coagulation factors Xa and XIa but also acts as an acute phase reactant whose plasma concentration rises in inflammatory settings. The objective of the present study was to assess the plasma ZPI antigen level in a cohort of patients suffering from septic shock with or without overt-disseminated intravascular coagulation (DIC). The plasma ZPI antigen level was approximately 2.5-fold higher in the patient group (n = 100; 38 with DIC and 62 without) than in healthy controls (n = 31). The elevation's magnitude did not appear to depend on the presence/absence of DIC. Furthermore, Western blots revealed the presence of cleaved ZPI in plasma from patients with severe sepsis, independently of the DIC status. In vitro, ZPI was proteolytically inactivated by purified neutrophil elastase (NE) and by NE on the surface of neutrophil extracellular traps (NETs). The electrophoretic pattern of ZPI after NE-catalyzed proteolysis was very similar to that resulting from the clotting process—suggesting that the cleaved ZPI observed in severe sepsis plasma is devoid of anticoagulant activity. Taken as a whole, our results (1) suggest that NE is involved in ZPI inactivation during sepsis, and (2) reveal a novel putative mechanism for the procoagulant activity of NETs in immunothrombosis.
Ventilatory support in Covid-19 pneumonia
Alain Mercat, Julien Demiselle, François Beloncle
Médecine Intensive Réanimation, 2021, 30 (Hors-série 1), pp.27-34. ⟨10.37051/mir-00068⟩
Article dans une revueAbstractThe Covid-19 pandemic led to a major influx of patients suffering from acute hypoxemic respiratory failure, which conducted intensivists to adapt ICU structures and question respiratory support strategies. Available data suggest that pathophysiology of Covid-19 associated - acute respiratory distress syndrome (ARDS) is substantially similar to the pathophysiology of ARDS unrelated to Covid-19. Specific vascular injuries may however be more frequent during Covid-19 and some patients may present a major alteration in hypoxic pulmonary vasoconstriction. To date, ventilatory support strategies of patients with Covid-19 should be in line with guidelines for ARDS unrelated to Covid-19, including in particular a cautious evaluation of positive end-expiratory pressure effects.
Discrepancy in Von Willebrand Abnormalities Between Degenerative and Functional Mitral Regurgitation
Kensuke Matsushita, Benjamin Marchandot, Marion Kibler, Antonin Trimaille, Sébastien Hess, Lelia Grunebaum, Antje Reydel, Laurence Jesel, Patrick Ohlmann, Olivier Morel
The American journal of cardiology, 2021, 149, pp.157-159. ⟨10.1016/j.amjcard.2021.03.007⟩
Article dans une revueAbstractRight ventricular dysfunction (RVD) is considered to be a late marker of aortic stenosis. However, there is a lack of consensus regarding the incidence, prognostic impact, and evolution of RVD in patients treated with transcatheter aortic valve implantation (TAVI). All patients treated with TAVI for severe aortic stenosis were included in a prospective single-center database. Patients who had a quantitative assessment of right ventricular (RV) function including tricuspid annular plane systolic excursion (TAPSE) and/or Doppler tissue imaging-derived tricuspid lateral annular systolic velocity (S' wave) measurements were eligible for this study. RVD was defined as TAPSE <17 mm or S' <9.5 cm/s if TAPSE was not available. Between 2014 and 2019, 503 patients with RV function assessment were included. The incidence of RVD before TAVI was 18.7%. Predictors of RVD were diabetes (p = 0.03), atrial fibrillation (p = 0.001), impaired left ventricular ejection fraction (p <0.0001), left ventricular dilatation (p = 0.007), and previous cardiac surgery (p = 0.002). Long-term survival was worse in patients with RVD before TAVI compared with those without RVD (hazard ratio 1.97, 95% confidence interval 1.1 to 3.4, p = 0.01). One year after TAVI, 58.7% of patients with baseline RVD had normal RV function and had similar outcomes as compared with those without RVD at baseline. In contrast, patients with persistent RVD had the worst prognosis. In conclusion, RVD is not rare and has a deleterious prognostic impact in patients treated with TAVI. Recovery of normal RV function is frequent after TAVI, whereas persistence of RVD is associated with poor outcomes.
Minor Cervical Spine Trauma with Vertebral Artery Injury
P. Kauffmann, J. Colin, P. Le Borgne
Annales françaises de médecine d'urgence, 2021, 11 (3), pp.168-170. ⟨10.3166/afmu-2021-0322⟩
Article dans une revueHyperthyroidism during a Manic Episode
L. Luhmann, P. Bilbault, S. Kepka
Annales françaises de médecine d'urgence, 2021, 11 (3), pp.165-167. ⟨10.3166/afmu-2021-0320⟩
Article dans une revueCost-effectiveness analysis of resorbable biosynthetic mesh in contaminated ventral hernia repair
Diane Charleux-Muller, Benoit Romain, C. Boisson, Michel Velten, Cecile Brigand, C. Lejeune
Journal of Visceral Surgery, 2021, 159 (4), pp.279-285. ⟨10.1016/j.jviscsurg.2021.06.001⟩
Article dans une revueAbstractBACKGROUND: The aim of this study was to compare, in terms of cost and serious complications, the use of biosynthetic resorbable parietal mesh with biologic mesh in patients undergoing contaminated ventral hernia repair (modified Ventral Hernia Working Group grade 3). Poly-4-hydroxy-butyrate (P4HB) biosynthetic mesh has rarely been the subject of comparative studies in the context of contamination. Data are required to confirm the effects of a transition from biological mesh to biosynthetic resorbable mesh. PATIENTS AND METHODS: A cost-effectiveness analysis was conducted. It was based on a decision analysis model built with clinical and economic data issued from a before-after study that included 94 patients hospitalized for ventral hernia repair at the University Hospital of Strasbourg (France) from June 2011 to February 2018. The effectiveness endpoint was the number of patients presenting with a serious specific complication or a general complication at 6 months. Data for surgical hospitalization stays, home hospitalizations and ambulatory care costs were included. RESULTS: We found fewer serious complications with biosynthetic mesh: 21% versus 33% with biologic mesh. A cost savings of US $5146 was determined. Deterministic sensitivity analyses and a probabilistic analysis confirmed our findings and the robustness of the model. CONCLUSION: P4HB biosynthetic resorbable mesh appeared to be the most effective and the least costly option. Additional data will be needed to confirm the superiority of biosynthetic mesh in terms of the recurrence risk reduction over a longer period.
Overexpression of the MSK1 Kinase in Patients With Chronic Lung Allograft Dysfunction and Its Confirmed Role in a Murine Model
Simona Nemska, François Daubeuf, Adeline Obrecht, Dominique Israel-Biet, Marc Stern, Romain Kessler, Antoine Roux, Reza Tavakoli, Pascal Villa, Adrien Tissot, Richard Danger, Laurent Reber, Eugénie Durand, Aurore Foureau, Sophie Brouard, Antoine Magnan, Nelly Frossard
Transplantation, 2021, 105 (6), pp.1212-1224. ⟨10.1097/TP.0000000000003606⟩
Article dans une revueAbstractBACKGROUND: Chronic lung allograft dysfunction (CLAD) and its obstructive form, the obliterative bronchiolitis (OB), are the main long-term complications related to high mortality rate postlung transplantation. CLAD treatment lacks a significant success in survival. Here, we investigated a new strategy through inhibition of the proinflammatory mitogen- and stress-activated kinase 1 (MSK1) kinase. METHODS: MSK1 expression was assessed in a mouse OB model after heterotopic tracheal allotransplantation. Pharmacological inhibition of MSK1 (H89, fasudil, PHA767491) was evaluated in the murine model and in a translational model using human lung primary fibroblasts in proinflammatory conditions. MSK1 expression was graded over time in biopsies from a cohort of CLAD patients. RESULTS: MSK1 mRNA progressively increased during OB (6.4-fold at D21 posttransplantation). Inhibition of MSK1 allowed to counteract the damage to the epithelium (56% restoration for H89), and abolished the recruitment of MHCII+ (94%) and T cells (100%) at the early inflammatory phase of OB. In addition, it markedly decreased the late fibroproliferative obstruction in allografts (48%). MSK1 inhibitors decreased production of IL-6 (whose transcription is under the control of MSK1) released from human lung fibroblasts (96%). Finally, we confirmed occurrence of a 2.9-fold increased MSK1 mRNA expression in lung biopsies in patients at 6 months before CLAD diagnosis as compared to recipients with stable lung function. CONCLUSIONS: These findings suggest the overall interest of the MSK1 kinase either as a marker or as a potential therapeutic target in lung dysfunction posttransplantation.
Follow-up of COVID-19 patients: LA is transient but other aPLs are persistent
Olivier Vollmer, Charles-Ambroise Tacquard, Yannick Dieudonné, Benoit Nespola, Laurent Sattler, Lélia Grunebaum, Vincent Gies, Mirjana Radosavljevic, Charlotte Kaeuffer, Yves Hansmann, Jean-Christophe Weber, Thierry Martin, Laurent Arnaud, Olivier Morel, Aurélien Guffroy, Olivier Collange, Paul-Michel Mertes, Anne-Sophie Korganow, Xavier Delabranche, Vincent Poindron
Autoimmunity Reviews, 2021, 20 (6), pp.102822. ⟨10.1016/j.autrev.2021.102822⟩
Article dans une revueAssessment of physicians’ resilience level during the COVID-19 pandemic
D Douillet, A Caillaud, Jeremie Riou, P Miroux, E Thibaud, M Noizet, M Oberlin, M Léger, R Mahieu, E Riquin, F Javaudin, F Morin, T Moumneh, D Savary, P-M Roy, O Hugli
Translational Psychiatry, 2021, 11 (1), pp.283. ⟨10.1038/s41398-021-01395-7⟩
Article dans une revueAbstractWe aim to assess physicians’ level of resilience and define factors that improve or decrease the resilience level during the COVID-19 pandemic. Physicians from hospitals located in areas with different COVID-19 caseload levels, were invited to participate in a national e-survey between April and May 2020. Study participants were mainly emergency physicians, and anaesthesiologists, infectious disease consultants, and intensive care. The survey assessed participant’s characteristics, factors potentially associated with resilience, and resilience using the Connor-Davidson Resilience Scale (RISC-25), with higher scores indicative of greater resilience. Factors associated with the resilience score were assessed using a multivariable linear regression. Of 451 responding physicians involved in the care of COVID-19 patients, 442 were included (98%). Age was 36.1 ± 10.3 years and 51.8% were male; 63% worked in the emergency department (n = 282), 10.4% in anesthesiology (n = 46), 9.9% in infectious disease department (n = 44), 4.8% in intensive care unit (n = 21) or other specialties (n = 49). The median RISC-25 score was at 69 (IQR 62-75). Factors associated with higher RISC scores were anesthesia as a specialty, parenthood, no previous history of anxiety or depression and nor increased anxiety. To conclude, this study is the first to characterize levels of resilience among physicians involved in COVID-19 unit. Our data points to certain protective characteristics and some detrimental factors, such as anxiety or depression, that could be amenable to remediating or preventing strategies to promote resilience and support caregivers in a pandemic.
Fluorescent nanocarriers targeting VCAM-1 for early detection of senescent endothelial cells
Eugenia Belcastro, Asad Ur Rehman, Lamia Remila, Sin-Hee Park, Dal Seong Gong, Nicolas Anton, Cyril Auger, Olivier Lefebvre, Jacky G Goetz, Mayeul Collot, Andrey S Klymchenko, Thierry F Vandamme, Valérie B Schini-Kerth
Nanomedicine: Nanotechnology, Biology and Medicine, 2021, 34, ⟨10.1016/j.nano.2021.102379⟩
Article dans une revueAbstractEndothelial senescence has been identified as an early event in the development of endothelial dysfunction, a hallmark of cardiovascular disease. This study developed theranostic nanocarriers (NC) decorated with VCAM-1 antibodies (NC-VCAM-1) in order to target cell surface VCAM-1, which is overexpressed in senescent endothelial cells (ECs) for diagnostic and therapeutic purposes. Incubation of Ang IIinduced premature senescent ECs or replicative senescent ECs with NC-VCAM-1 loaded with lipophilic fluorescent dyes showed higher fluorescence signals than healthy EC, which was dependent on the NC size and VCAM-1 antibodies concentration, and not observed following masking of VCAM-1. NC loaded with omega 3 polyunsaturated fatty acid (NC-EPA:DHA6:1) were more effective than native EPA:DHA 6:1 to prevent Ang II-induced VCAM-1 and p53 upregulation, and SA-β-galactosidase activity in coronary artery segments. These theranostic NC might be of interest to evaluate the extent and localization of endothelial senescence and to prevent pro-senescent endothelial responses.
Clinical characteristics of and outcomes for patients with COVID-19 and comorbid lung diseases primarily hospitalized in a conventional pulmonology unit: A retrospective study
M. Riou, C. Marcot, M. Canuet, B. Renaud-Picard, E. Chatron, M. Porzio, T. Dégot, S. Hirschi, C. Metz-Favre, L. Kassegne, C. Ederle, N. Khayath, A. Labani, P. Leyendecker, F. de Blay, R. Kessler
Respiratory Medicine and Research, 2021, 79, pp.100801 -. ⟨10.1016/j.resmer.2020.100801⟩
Article dans une revueAbstractBackground: Scant data are currently available about a potential link between comorbid chronic lung diseases (CLD) and the risk and severity of the coronavirus disease 2019 (COVID-19) infection.Methods: To describe the clinical characteristics of and outcomes for patients with COVID-19 infection, including patients with comorbid respiratory diseases, who have been primarily hospitalized in the pulmonology department of Strasbourg University Hospital, France. In this retrospective, single-center study, we included all confirmed cases of COVID-19 from March 3 to April 15, 2020. We then compared the symptoms, biological and radiological findings, and outcomes for patients with and without CLD.Results: Of the 124 patients that were enrolled, the median age was 62 years, and 75 patients (60%) were male. Overall, 40% of patients (n=50) had preexisting CLD, including chronic obstructive pulmonary disease (COPD) (n=15, 12%) and asthma (n=19, 15%). Twenty-eight patients were transferred to the intensive care unit (ICU), and six patients died in our unit. CLD were not predictive of ICU hospitalization, but a significantly higher total mortality was observed (17.6% vs. 5.5%, P<0.05) in these patients.Conclusions: Our results suggest the lack of an over-representation of CLD in COVID-19, representing 40% of patients in this cohort and even within a pulmonology department. CLD were not a risk factor for ICU management. However, a tendency to higher global mortality was observed in COVID-19 patients with CLD. Further studies are warranted to determine the risk of COVID-19 for patients with comorbid CLD.
Transient endothelial injury and release of lupus anticoagulant in COVID-19
Antonin Trimaille, Benjamin Marchandot, Walid Oulehri, Adrien Carmona, Olivier Vollmer, Vincent Poindron, Kensuke Matsushita, Laurent Sattler, Lelia Grunebaum, Anne-Sophie Korganow, Valerie Schini-Kerth, Olivier Morel
Journal of Thrombosis and Thrombolysis, 2021, 53 (1), pp.228 - 230. ⟨10.1007/s11239-021-02485-5⟩
Article dans une revueControlled synthesis of NaYF 4 :Yb,Er upconversion nanocrystals as potential probe for bioimaging: A focus on heat treatment
Alireza Kavand, Christophe A Serra, Christian Blanck, Marc Lenertz, Nicolas Anton, Thierry F Vandamme, Yves Mély, Frédéric Przybilla, Delphine Chan-Seng
ACS Applied Nano Materials, 2021, 4 (5), pp.5319-5329. ⟨10.1021/acsanm.1c00664⟩
Article dans une revueAbstractUpconversion nanoparticles are a promising class of materials for bioimaging. Their attractive optical properties are influenced by their crystalline phase, size, and morphology resulting from the preparation method employed. Herein, we synthesized NaYF4:Yb,Er nanocrystals by the co-precipitation method followed by a heat treatment step. The influence of the treatment temperature and the type of reactor on the phase transition from the α-cubic to the β-hexagonal phase was investigated. We found that before the phase transition, the size and shape of α-NaYF4:Yb,Er nanocrystals evolved due to a coalescence mechanism with microtubular reactors. In contrast to the flask system, we also observed an anisotropic growth of β-NaYF4:Yb,Er nanorods in microtubes whose length can be controlled by adjusting the temperature. The diameter of microtubes plays a critical role in the shape evolution of the final products from spheres to nanorods. The type of reactor and thus the resulting temperature gradient could be considered as a promising parameter to control the phase, shape and size of UCNPs without changing the chemical composition.
Occupational Allergies in Dentistry: A Cross-Sectional Study in a Group of French Dentists
Lise Boudinar, Damien Offner, Sophie Jung
Oral, 2021, 1 (2), pp.139-152. ⟨10.3390/oral1020014⟩
Article dans une revueCan polylactic acid be a CAD/CAM material for provisional crown restorations in terms of fit and fracture strength?
Merve Benli, Beril Eker-Gümüş, Yusuf Kahraman, Olivier Huck, Mutlu Özcan
Dental Materials Journal, 2021, 40, pp.772 - 780. ⟨10.4012/dmj.2020-232⟩
Article dans une revueAbstractThis study aimed to evaluate polylactic acid (PLA) as a provisional crown material. Lower right first molar phantom tooth was used for the fabrication of 60 crowns. Samples were divided into three groups (n=20) according to the material: Group PL (PLA), Group PM (polymethyl methacrylate), and Group PE (polyetheretherketone). Each group was investigated for internal and marginal fit, fracture strength, and fracture mode. Data were analyzed using ANOVA, chi-squared test, and Tukey's tests (p≤0.05). The average marginal gap value of each group was: PE 56.00±4.67 µm, PM 61.15±4.44 µm, and PL 60.40±2.85 µm (p<0.001). The average internal gap value for each group was: PE 128.90±8.39 µm, PM 132. 40±7.51 µm, and PL 130.75±9.76 µm (p=0.442). The average fracture strength of each group was: PE 840.90±13.23 N, PM 733.30±9.00 N, and PL 664.50±10.79 N (p<0.001). Results demonstrated that PLA may be a good option as a provisional crown material.
Endobronchial Coil System versus Standard-of-Care Medical Management in the Treatment of Subjects with Severe Emphysema
Karin Klooster, Arschang Valipour, Charles-Hugo Marquette, Jacques Boutros, Hervé Mal, Armelle Marceau, Pallav Shah, Francesca Conway, Gaëtan Deslée, Arnaud Bourdin, Christophe Pison, Christian Grah, Martin Hetzel, Christian Schumann, Romain Kessler, Ralf-Harto Huebner, Dirk Skowasch, Kaid Darwiche, Peter Hammerl, Franz Stanzel, Michaela Bezzi, Hervé Dutau, Felix J.F. Herth, Dirk-Jan Slebos
Respiration, 2021, pp.1-7. ⟨10.1159/000515744⟩
Article dans une revueAbstractBackground: Bronchoscopic lung volume reduction using endobronchial coils is a new treatment for patients with severe emphysema. To date, the benefits have been modest and have been suggested to be much larger in patients with severe hyperinflation and nonmulti-comorbidity. Objective: We aimed to evaluate the efficacy and safety of endobronchial coil treatment in a randomized multicenter clinical trial using optimized patient selection. Method: Patients with severe emphysema on HRCT scan with severe hyperinflation (residual volume [RV] ≥200% predicted and RV/total lung capacity [TLC] >55%) were randomized to coil treatment or control. Primary outcome measures were differences in the forced expiratory volume in 1 s (FEV1) and St George's Respiratory Questionnaire (SGRQ) total score at 6 months. Results: Due to premature study termination, a total of 120 patients (age 63 ± 7 years, FEV1 29 ± 7% predicted, RV 251 ± 41% predicted, RV/TLC 67 ± 6%, and SGRQ 58 ± 13 points), instead of 210 patients, were randomized. At study termination, 91 patients (57 coil and 34 control) had 6-month results available. Analyses showed significantly greater improvements in favor of the coil group. The increase in FEV1 was greater in the coil group than that in the control group by + 10.3 [+4.7 to +16.0] % and in SGRQ by -10.6 [-15.9 to -5.4] points. At study termination, there were 5 (6.8%) deaths in the coil cohort reported. Conclusion: Despite early study termination, coil treatment compared to control results in a significant improvement in the lung function and quality of life benefits for up to 6 months in patients with emphysema and severe hyperinflation. These improvements were of clinical importance but were associated with a higher likelihood of serious adverse events.
Peri-implant bone preservation of a novel, self-cutting, and fully tapered implant in the healed crestal ridge of minipigs: submerged vs. transgingival healing
Helena Francisco, Gary Finelle, Fabien Bornert, Rebecca Sandgren, Valentin Herber, Nils Warfving, Benjamin E Pippenger
Clinical Oral Investigations, 2021, 25 (12), pp.6821 - 6832. ⟨10.1007/s00784-021-03970-0⟩
Article dans une revueAbstractObjectives: The aim of this study was to assess the influence of transgingival compared with submerged healing on peri-implant bone maintenance around a novel, fully tapered implant in a healed crestal ridge in minipigs. Materials and methods: In each of 12 minipigs, two implants (Straumann® BLX, Roxolid® SLActive®, Ø 3.75 × 8 mm) were placed. Implants were either left for submerged or for transgingival healing for 12 weeks. Measurements performed were boneto-implant contact (BIC), first bone-to-implant contact (fBIC), bone area to total area (BATA), perpendicular bone crest to implant shoulder (pCIS), bone height change from placement, and bone overgrowth (for submerged implants). Results: No significant differences were found between transgingival and submerged healing in any of the measured parameters, except for BATA on the buccal aspect in which significantly more bone formation was found for the transgingival healing group. For both groups, there was a gain in crestal bone height during the 12-week healing period. Conclusions: Loaded compared with unloaded implants displayed comparable levels of osseointegration and equivalent marginal bone levels. This qualifies the implant placement protocol with respect to the osteotomy dimensions and subcrestal placement protocol for immediate loading. Clinical relevance: The here presented results related to osseointegration and crestal bone maintenance after submerged or transgingival healing have demonstrated a high level of consistency in the used in vivo translational model. The obtained results support the translation of the novel implant type in conjunction with the developed surgical workflow and placement protocol into further clinical investigation and use.
Letter by Carmona et al Regarding Article, "Beneficial Effect of Statins in COVID-19-Related Outcomes-Brief Report: a National Population-Based Cohort Study
Adrien Carmona, Benjamin Marchandot, Kensuke Matsushita, Olivier Morel
Arteriosclerosis, Thrombosis, and Vascular Biology, 2021, 41 (5), ⟨10.1161/ATVBAHA.121.316224⟩
Article dans une revueImplant-based oral rehabilitation in systemic sclerosis patients: a systematic review
Sarah Dubourg, Olivier Huck, Sophie Jung
Journal of Oral Implantology, 2021, ⟨10.1563/aaid-joi-D-20-00384⟩
Article dans une revueThe IBD-disk is a reliable tool to assess the daily-life burden of patients with inflammatory bowel disease
Sara Tadbiri, Maria Nachury, Yoram Bouhnik, Mélanie Serrero, Xavier Hebuterne, Xavier Roblin, Julien Kirchgesner, Guillaume Bouguen, Denis Franchimont, Guillaume Savoye, Anthony Buisson, Edouard Louis, Stéphane Nancey, Vered Abitbol, Jean-Marie Reimund, Olivier Dewit, Lucine Vuitton, Nicolas Matthieu, Laurent Peyrin-Biroulet, Cyrielle Gilletta, Matthieu Allez, Stephanie Viennot, Caroline Trang-Poisson, Nina Dib, Hedia Brixi, Médina Boualit, Laurianne Plastaras, Lucile Boivineau, Mathurin Fumery, Ludovic Caillo, David Laharie, Aurelien Amiot, Harry Sokol
Journal of Crohn's and Colitis, 2021, 15 (5), pp.766-773. ⟨10.1093/ecco-jcc/jjaa244⟩
Article dans une revueAbstractBackground and aim - The inflammatory bowel disease [IBD]-disk is a 10-item self-questionnaire that is used to assess IBD-related disability. The aim of the present study was to evaluate this tool in the assessment of IBD daily-life burden. Methods - A 1-week cross-sectional study was conducted in 42 centres affiliated in France and Belgium. Patients were asked to complete the IBD-disk [best score: 0, worst score: 100] and a visual analogue scale [VAS] of IBD daily-life burden [best score: 0, worst score: 10]. Analyses included internal consistency, correlation analysis, and diagnostic performance assessment. Results - Among the 2011 IBD outpatients who responded to the survey [67.8% of the patients had Crohn's disease], 49.9% were in clinical remission. The IBD-disk completion rate was 73.8%. The final analysis was conducted in this population [n = 1455 patients]. The mean IBD-disk score and IBD daily-life burden VAS were 39.0 ± 23.2 and 5.2 ± 2.9, respectively. The IBD-disk score was well correlated with the IBD daily-life burden VAS [r = 0.67; p <0.001]. At an optimal IBD-disk cut-off of 40, the area under the receiver operating characteristic curve [AUROC] for high IBD daily-life burden [VAS >5] was 0.81 (95% confidence interval [CI]: 0.79-0.83; p <0.001). Conclusions - In a large cohort of patients, the IBD-disk score was well correlated with IBD daily-life burden, and it could be used in clinical practice.
Pressure Overload–Mediated Sustained PKR2 (Prokineticin-2 Receptor) Signaling in Cardiomyocytes Contributes to Cardiac Hypertrophy and Endotheliopathies
Ferda Demir, Kyoji Urayama, Anais Audebrand, Ayca Toprak-Semiz, Marja Steenman, Hitoshi Kurose, Canan Nebigil
Hypertension, 2021, 77 (5), pp.1559-1570. ⟨10.1161/HYPERTENSIONAHA.120.16808⟩
Article dans une revueAbstractChronic cardiac pressure overload, caused by conditions, such as hypertension, induces pathological hypertrophic growth of myocardium and vascular rarefaction, with largely unknown mechanisms. Here, we described that expression of the PKR2 (prokineticin-2 receptor) is increased in the cardiomyocytes of mice following transaortic constriction pressure overload–mediated pathological hypertrophy. To identify PKR2-induced pathways, we performed microarray analysis on TG-PKR2 (transgenic mice overexpressing cardiomyocyte-restricted human PKR2) hearts and cytokine analyses in hPKR2 overexpressing H9c2-lines (PKR2-cardiomyocytes). An enrichment of activin pathway gene sets was found in both TG-PKR2 and transaortic constriction-operated hearts. Elevated levels of 2 cytokines activin A and its coreceptor, sENG (soluble Endoglin), were found in both PKR2-cardiomyocytes and in PKR2-cardiomyocytes conditioned medium. ELISA analyses of the cardiomyocytes derived from both TG-PKR2 and transaortic constriction hearts revealed high levels of these cardiokines that were repressed with antibodies blocking PKR2, indicating a PKR2-dependent event. The conditioned medium of PKR2-cardiomyocytes induced fenestration of endothelial cells and inhibited tube-like formations. These endotheliopathies were blocked by either depleting activin A or sENG from conditioned medium or by using 2 pharmacological inhibitors, follistatin, and TRC105. In addition, similar endotheliopathies were produced by exogenous administration of activin A and ENG. Prolonged exposure to prokineticin-2 in PKR2-cardiomyocytes increased cell volume by the PKR2/Gα 12/13 /ERK5-pathway. Activation of the PKR2/Gα 12/13 /matrix metalloprotease-pathway promoted both activin A and sENG release. This study reveals that pressure overload–mediated PKR2 signaling in cardiomyocytes contributes to cardiac hypertrophy through autocrine signaling, and vascular rarefaction via cardiac cytokine-mediated cardiomyocyte–endothelial cell communications. Our results may contribute to the development of potential therapeutic targets for heart failure.
Determinants of IBD‐related disability: a cross‐sectional survey from the GETAID
Jenny Tannoury, Maria Nachury, Carole Martins, Melanie Serrero, Jerome Filippi, Xavier Roblin, Anne Bourrier, Guillaume Bouguen, Denis Franchimont, Guillaume Savoye, Anthony Buisson, Edouard Louis, Stephane Nancey, Vered Abitbol, Jean-Marie Reimund, Olivier Dewitt, Lucine Vuitton, Nicolas Mathieu, Laurent Peyrin-Biroulet, Cyrielle Gilletta, Matthieu Allez, Stephanie Viennot, Caroline Trang-Poisson, David Laharie, Aurelien Amiot
Alimentary Pharmacology & Therapeutics, 2021, 53 (10), pp.1098-1107. ⟨10.1111/apt.16353⟩
Article dans une revueAbstractBackground - The burden of inflammatory bowel disease (IBD) is rising worldwide. The goal of IBD treatment is to achieve clinical and endoscopic remission but also prevent disability. Aims - To identify the predictive factors of disability in a large population of patients with IBD. Patients and methods - We conducted a cross-sectional survey in 42 tertiary centres in France and Belgium. A self-administered questionnaire was designed to explore patients and their IBD characteristics. IBD-disk is a validated tool to measure disability in patients with IBD. The IBD-disk score was then calculated for each patient. Based on a previous study, an overall IBD-disk score ≥40 was associated with moderate-to-severe disability. Results - Among the 2011 patients, 1700 were analysed, including 746 (44%) in self-reported clinical remission and 752 (44.2%) declaring clinical activity. The patient global assessment of global remission was missing in 200 (11.8%) of 1700 patients. Moderate-to-severe disability was significantly increased in patients with BMI >25 kg/m (OR = 1.66; 95% CI [1.29-2.14]), in those having perception of need for a psychotherapist (OR = 2.24; 95% CI [1.79-3.05]) and social worker (OR = 1.54; 95% CI [1.08-2.21]). Conversely, male gender (OR = 0.83; 95% CI [0.69-0.99]), ulcerative colitis (OR = 0.69; 95% CI [0.53-0.92]), self-reported clinical remission (OR = 0.59; 95% CI [0.46-0.77]) and employed or student occupational status (OR = 0.69; 95% CI [0.52-0.92]) were inversely correlated with disability. Overall, 257 (34.5%) patients who declared being in clinical remission had disability. Conclusion - Determinants of IBD-related disability include IBD-related factors but also psychological and social factors. This highlights the importance of a multidisciplinary team in the management of patients with IBD.
Robustness and relevance of predictive score in sudden cardiac death for patients with Brugada syndrome
Vincent Probst, Thomas Goronflot, Soraya Anys, Romain Tixier, Jean Briand, Pauline Berthome, Olivier Geoffroy, Nicolas Clementy, Jacques Mansourati, Laurence Jesel, Jean-Marc Dupuis, Paul Bru, Florence Kyndt, Matthieu Wargny, Béatrice Guyomarch, Aurélie Thollet, Philippe Mabo, Pierre-Antoine Gourraud, Nathalie Behar, Frédéric Sacher, Jean-Baptiste Gourraud
European Heart Journal, 2021, 42 (17), pp.1687-1695. ⟨10.1093/eurheartj/ehaa763⟩
Article dans une revueAbstractAIMS: Risk stratification of sudden cardiac arrest (SCA) in Brugada syndrome (Brs) remains the main challenge for physicians. Several scores have been suggested to improve risk stratification but never replicated. We aim to investigate the accuracy of the Brs risk scores. METHODS AND RESULTS: A total of 1613 patients [mean age 45 ± 15 years, 69% male, 323 (20%) symptomatic] were prospectively enrolled from 1993 to 2016 in a multicentric database. All data described in the risk score were double reviewed for the study. Among them, all patients were evaluated with Shanghai score and 461 (29%) with Sieira score. After a mean follow-up of 6.5 ± 4.7 years, an arrhythmic event occurred in 75 (5%) patients including 16 SCA, 11 symptomatic ventricular arrhythmia, and 48 appropriate therapies. Predictive capacity of the Shanghai score (n = 1613) and the Sieira (n = 461) score was, respectively, estimated by an area under the curve of 0.73 (0.67-0.79) and 0.71 (0.61-0.81). Considering Sieira score, the event rate at 10 years was significantly higher with a score of 5 (26.4%) than with a score of 0 (0.9%) or 1 (1.1%) (P < 0.01). No statistical difference was found in intermediate-risk patients (score 2-4). The Shanghai score does not allow to better stratify the risk of SCA. CONCLUSIONS: In the largest cohort of Brs patient ever described, risk scores do not allow stratifying the risk of arrhythmic event in intermediate-risk patient.
Yentl syndrome and the ICU
Julie Helms, Audrey de Jong, Sharon Einav
Intensive Care Medicine, 2021, ⟨10.1007/s00134-021-06420-3⟩
Article dans une revueMicroguided endodontics: Accuracy evaluation for access through intraroot fibre‐post
Cyril Perez, Amira Sayeh, Olivier Etienne, Catherine-Isabelle Gros, Ashley Mark, Cauris Couvrechel, Florent Meyer
Australian Endodontic Journal, 2021, ⟨10.1111/aej.12524⟩
Article dans une revueAbstractIn this work, we intended to assess the reliability of guided endodontic technique to remove a bonded fibre‐post when there are artefacts in the cone‐beam computed tomography (CBCT) images caused by composite dental materials. We mounted natural posterior teeth on ten simulated models. Forty fibre‐post and composite‐core restorations were inserted in the teeth. We merged a pre‐operative CBCT and optical surface scan on the BlueskyplanTM software to digitally design and subsequently 3D‐printed the guides. Two operators initiated endodontic access into the fibre‐post restorations using the template to guide the drill. Post‐operative CBCT was taken and merged onto the pre‐operative plan to measure the deviations at the coronal and apical segments. The mean deviation between the planned and actual drill paths were, respectively, of 0.39 ± 0.14 mm coronally and 0.40 ± 0.19 mm apically. Microguided endodontics is a predictable and accurate method to remove fibre‐post restorations efficiently.
Evasion before invasion: Pre-cancer immunosurveillance
Mihaela Angelova, Céline Mascaux, Jérôme Galon
OncoImmunology, 2021, 10 (1), pp.1912250. ⟨10.1080/2162402x.2021.1912250⟩
Article dans une revueAbstractEarly intervention and risk stratification solutions for lung cancer are limited by our understanding of how carcinogenesis transforms the pre-invasive epithelium and its microenvironment before the carcinoma stage. We describe the sequence of molecular and cellular changes leading to cancer formation and the co-evolution of the earliest immune response. We revealed that immune sensing, infiltration and activation of immune cells, immune escape, and microenvironment reorganization occur early in pre-cancer. These findings urge the need for broadening the scope of the established immunotherapy approaches toward prophylactic cancer treatment and preventive intervention. Leveraging the immune contexture and the mechanisms of immune modulation for individuals at risk of developing cancer and further to the general population will allow for early detection, chemoprevention, and risk stratification in the near future.
Intravenous high-dose methotrexate based systemic therapy in the treatment of isolated primary vitreoretinal lymphoma: an LOC network study
Marion Lam, Valérie Touitou, Sylvain Choquet, Nathalie Cassoux, Hervé Ghesquières, Laurent Kodjikian, Anna Schmitt, Sarra Gattoussi, Émeline Tabouret, Magali Sampo, Marie Blonski, Karine Angioi-Duprez, Roch Houot, Frédéric Mouriaux, Emmanuel Gyan, Marie-Laure Le Lez, Marie-Pierre Moles, Fabien Croisé, Adrien Chauchet, Claire Schwartz, Guido Ahle, Laurent Meyer, Rémy Gressin, Christophe Chiquet, Lucie Oberic, Priscille Ollé, Jean-Pierre Marolleau, Benjamin Jany, Adrian Tempescul, Béatrice Cochener, Gandhi Damaj, Jean-Claude Quintyn, Cécile Chabrot, Eve Rousseau, Paul Franciane, Christelle Schneider, Hélène Massé, Jérôme Tamburini Bonnefoy, Antoine Brézin, Luc-Matthieu Fornecker, Laurent Ballonzoli, Magali Le Garff-Tavernier, Khê Hoang-Xuan, Bahram Bodaghi, Carole Soussain, Caroline Houillier
American Journal of Hematology, 2021, 96 (7), pp.823-833. ⟨10.1002/ajh.26199⟩
Article dans une revueAbstractThe treatment of primary vitreoretinal lymphoma (PVRL) remains controversial regarding the use of local, systemic, or combined treatments. The aim of this study was to analyze the efficacy and toxicity of intravenous high-dose methotrexate (IV HD-MTX) based systemic therapy in a uniformly treated population of PVRL patients. From a nationwide French database, we retrospectively selected 59 patients (median age: 70 years, median Karnofsky Performance Status: 90%) with isolated PVRL at diagnosis who received first-line treatment with HD-MTX between 2011-2018. 8/59 patients also received a local treatment. No deaths or premature discontinuations of MTX due to toxicity were reported. A complete response was obtained in 40/57 patients after chemotherapy. Before treatment, IL-10 was elevated in the aqueous humor (AH) or in the vitreous in 89% of patients. After treatment, AH IL-10 was undetectable in 87% of patients with a CR/uCR/PR and detectable in 92% of patients with PD/SD. After a median follow-up of 61 months, 41/59 (69%) patients had relapsed, including 29 isolated ocular relapses as the first relapse and a total of 22 brain relapses. The median overall survival, progression-free survival, ocular-free survival and brain-free survival were 75, 18, 29 and 73 months, respectively. IV HD-MTX based systemic therapy as a first-line treatment for isolated PVRL is feasible, with acceptable toxicity, even in an elderly population. This strategy seems efficient to prevent brain relapse with prolonged overall survival. However, the ocular relapse rate remains high. New approaches are needed to improve local control of this disease, and ocular assessment could be completed by monitoring AH IL-10.
New-onset systemic sclerosis and scleroderma renal crisis under docetaxel
Véronique Debien, Arthur Petitdemange, Dorothée Bazin, Carole Ederle, Benoit Nespola, Hamid Merdji, Jérome Olagne, Thierry Martin, Aurélien Guffroy, Carole Pflumio
Journal of Scleroderma and Related Disorders, 2021, 6 (3), pp.306-310. ⟨10.1177/23971983211007669⟩
Article dans une revueAbstractSystemic sclerosis is a rare systemic autoimmune disease characterized by microvascular impairment and fibrosis of the skin and other organs with poor outcomes. Toxic causes may be involved. We reported the case of a 59-year-old woman who developed an acute systemic sclerosis after two doses of adjuvant chemotherapy by docetaxel and cyclophosphamide for a localized hormone receptor + human epithelial receptor 2—breast cancer. Docetaxel is a major chemotherapy drug used in the treatment of breast, lung, and prostate cancers, among others. Scleroderma-like skin-induced changes (morphea) have been already described for taxanes. Here, we report for the first time a case of severe lung and kidney flare with thrombotic microangiopathy after steroids for acute interstitial lung disease probably induced by anti-RNA polymerase III + systemic sclerosis after docetaxel.
CDX2 regulates ACE expression in blood development and leukemia cells
Reine El Omar, Emmanuelle Julien, Katia Biasch, Blandine Guffroy, Bruno Lioure, Laurent Vallat, Isabelle Gross, Claire Domon-Dell, François Lanza, Christian Gachet, Matteo Negroni, Jean-Noël Freund, Manuela Tavian
Blood Advances, 2021, 5 (7), pp.2012-2016. ⟨10.1182/bloodadvances.2020003563⟩
Article dans une revueAbstractKey Points Expression of caudal-related homeobox gene 2 (CDX2) and angiotensin-converting enzyme (ACE) correlates during hematopoietic emergence. This emergence occurs in human and mouse embryos and in human acute myeloid leukemia; CDX2 homeoprotein also binds to the ACE promoter.
Impact of ischemia time on islet isolation success and posttransplantation outcomes: A retrospective study of 452 pancreas isolations
Charles-Henri Wassmer, Quentin Perrier, Christophe Combescure, Nadine Pernin, Géraldine Parnaud, David Cottet-Dumoulin, Estelle Brioudes, Kevin Bellofatto, Fanny Lebreton, Ekaterine Berishvili, Sandrine Lablanche, Laurence Kessler, Anne Wojtusciszyn, Fanny Buron, Sophie Borot, Domenico Bosco, Thierry Berney, Vanessa Lavallard
American Journal of Transplantation, 2021, 21 (4), pp.1493-1502. ⟨10.1111/ajt.16320⟩
Article dans une revueAbstractMany variables impact islet isolation, including pancreas ischemia time. The ischemia time upper limit that should be respected to avoid a negative impact on the isolation outcome is not well defined. We have performed a retrospective analysis of all islet isolations in our center between 2008 and 2018. Total ischemia time, cold ischemia time, and organ removal time were analyzed. Isolation success was defined as an islet yield ≥200 000 IEQ. Of the 452 pancreases included, 288 (64%) were successfully isolated. Probability of isolation success showed a significant decrease after 8 hours of total ischemia time, 7 hours of cold ischemia time, and 80 minutes of organ removal time. Although we observed an impact of ischemia time on islet yield, a probability of isolation success of 50% was still present even when total ischemia time exceeds 12 hours. Posttransplantation clinical outcomes were assessed in 32 recipients and no significant difference was found regardless of ischemia time. These data indicate that although shorter ischemia times are associated with better islet isolation outcomes, total ischemia time >12 hours can provide excellent results in appropriately selected donors.
Patients’ real-world experience with inflammatory bowel disease: A cross-sectional survey in tertiary care centres from the GETAID group
Maria Nachury, Yoram Bouhnik, Mélanie Serrero, Jerome Filippi, Xavier Roblin, Julien Kirchgesner, Guillaume Bouguen, Denis Franchimont, Guillaume Savoye, Anthony Buisson, Edouard Louis, Stéphane Nancey, Vered Abitbol, Jean-Marie Reimund, Olivier Dewit, Lucine Vuitton, Nicolas Matthieu, Laurent Peyrin-Biroulet, Cyrielle Gilletta, Sara Tadbiri, Matthieu Allez, Stephanie Viennot, Arnaud Bourreille, David Laharie, Aurelien Amiot
Digestive and Liver Disease, 2021, 53 (4), pp.434-441. ⟨10.1016/j.dld.2020.10.020⟩
Article dans une revueAbstractBACKGROUND: Patients’ experience with healthcare professionals could influence their clinical outcomes. AIMS: To assess inflammatory bowel disease (IBD) patients’ experience with their disease, their treatment and their relationship with their physician. METHODS: A one-week cross-sectional study was conducted in 42 IBD centres. 2011 consecutive outpatients with IBD completed an anonymous self-report questionnaire assessing their experience with and knowledge of IBD. RESULTS: A quantitative assessment of the doctor-patient relationship revealed that patients’ knowledge of IBD and IBD treatment ranged from 7.4 to 8.3 out of 10. In addition to IBD physicians, other sources of information about IBD and current treatment mainly included the internet (80% and 63%, respectively) and general practitioners (61% and 54%). Knowledge about education programmes (28%) was poor, resulting in a lack of willingness to further use these resources (25%). Concerns about IBD treatment were raised in 76% of patients, mostly related to the fear of adverse events (47%) and a lack of efficacy (33%). The need of alternative healthcare professionals was reported by 89% of the sample. CONCLUSION: In a large cohort of patients, we highlighted gaps in the management of patients with IBD regarding the need for higher-quality information and the implementation of alternative healthcare professionals.
Prior Exposure to Angiotensin II Receptor Blockers in Patients With Septic Shock to Individualize Mean Arterial Pressure Target? A Post Hoc Analysis of the Sepsis and Mean Arterial Pressure (SEPSISPAM) Trial
Julien Demiselle, Valérie Seegers, Marie Lemerle, Ferhat Meziani, Fabien Grelon, Bruno Megarbane, Nadia Anguel, Jean-Paul Mira, Pierre-François Dequin, Soizic Gergaud, Nicolas Weiss, François Legay, Yves Le Tulzo, Marie Conrad, René Robert, Frédéric Gonzalez, Christophe Guitton, Fabienne Tamion, Jean-Marie Tonnelier, Jean-Pierre Bédos, Thierry van der Linden, Antoine Vieillard-Baron, Eric Mariotte, Gaël Pradel, Olivier Lesieur, Jean-Damien Ricard, Fabien Hervé, Damien Du Cheyron, Claude Guerin, Jean-Louis Teboul, Julie Helms, Peter Radermacher, Pierre Asfar
Critical Care Medicine, 2021, 49 (4), pp.412-422. ⟨10.1097/CCM.0000000000004872⟩
Article dans une revueAbstractOBJECTIVES: Individualizing a target mean arterial pressure is challenging during the initial resuscitation of patients with septic shock. The Sepsis and Mean Arterial Pressure (SEPSISPAM) trial suggested that targeting high mean arterial pressure might reduce the occurrence of acute kidney injury among those included patients with a past history of chronic hypertension. We investigated whether the class of antihypertensive medications used before the ICU stay in chronic hypertensive patients was associated with the severity of acute kidney injury occurring after inclusion, according to mean arterial pressure target. DESIGN: Post hoc analysis of the SEPSISPAM trial. SETTING: The primary outcome was the occurrence of severe acute kidney injury during the ICU stay defined as kidney disease improving global outcome stage 2 or higher. Secondary outcomes were mortality at day 28 and mortality at day 90. PATIENTS: All patients with chronic hypertension included in SEPSISPAM with available antihypertensive medications data in the hospitalization report were included. MEASUREMENTS AND MAIN RESULTS: We analyzed 297 patients. Severe acute kidney injury occurred in 184 patients, without difference according to pre-ICU exposure to antihypertensive medications. Patients with pre-ICU exposure to angiotensin II receptor blockers had significantly less severe acute kidney injury in the high mean arterial pressure target group (adjusted odd ratio 0.24 with 95% CI [0.09-0.66]; p = 0.006). No statistically significant association was found after adjustment for pre-ICU exposure to antihypertensive medications and survival. CONCLUSIONS: Our results suggest that patients with septic shock and chronic hypertension treated with angiotensin II receptor blocker may benefit from a high mean arterial pressure target to reduce the risk of acute kidney injury occurrence.
Evolution of Dome-shaped Macula Is Due to Differential Elongation of the Eye Predominant in the Peri-dome Region
Lea Dormegny, Xuanli Liu, Elise Philippakis, Ramin Tadayoni, Zsolt Bocskei, Tristan Bourcier, Arnaud Sauer, Alain Gaudric, Claude Speeg-Schatz, David Gaucher
American Journal of Ophthalmology, 2021, 224, pp.18-29. ⟨10.1016/j.ajo.2020.11.013⟩
Article dans une revueEfficacy and safety of human soluble thrombomodulin (ART-123) for treatment of patients in France with sepsis-associated coagulopathy: post hoc analysis of SCARLET
Bruno Francois, Maud Fiancette, Julie Helms, Emmanuelle Mercier, Jean-Baptiste Lascarrou, Toshihiko Kayanoki, Kosuke Tanaka, David Fineberg, Jean-Louis Vincent, Xavier Wittebole
Annals of Intensive Care, 2021, 11, ⟨10.1186/s13613-021-00842-4⟩
Article dans une revueAbstractBackground The phase 3 multinational SCARLET study evaluated the efficacy and safety of a recombinant human soluble thrombomodulin (ART-123) for treatment of sepsis-associated coagulopathy (SAC), which correlates with increased mortality risk in patients with sepsis. Although no significant reduction in mortality was observed with ART-123 compared with placebo in the full analysis set (FAS), an efficacy signal of ART-123 was observed in subgroups of patients who sustained coagulopathy until the first treatment and those not administered concomitant heparin. Post hoc analysis was performed of patients treated in France, the country with the largest enrollment (19% of the FAS) and consistent patient enrollment throughout the study duration. Methods Adult patients with SAC (international normalized ratio > 1.4; platelets > 30 x 10(9)/L to < 150 x 10(9)/L or platelet decrease > 30% within 24 h) and evidence of bacterial infection were included. The primary efficacy outcome was 28-day all-cause mortality. Safety outcomes included adverse, serious adverse, and major bleeding events. This analysis assessed patient characteristics and efficacy and safety outcomes in France compared with the rest of the world (ROW; excluding France). Mortality rates were assessed in patients in France or the ROW with characteristics previously associated with ART-123 efficacy. Results Baseline characteristics were similar between France and the ROW, but some measurements of disease severity were higher in patients in France. The 28-day all-cause mortality absolute risk reductions (ARRs) with ART-123 were 8.3% in France and 1.1% in the ROW. The greater ARR in France may be related to a higher rate of sustained coagulopathy and lower rate of heparin use. In France and the ROW, 84.6% and 78.0% of patients sustained coagulopathy from the time of initial SAC diagnosis to first treatment with the study drug, and 65.8% and 43.9% did not receive heparin, respectively. The ARRs for these subgroups of patients in France were 13.4% and 16.6%, respectively. Safety of ART-123 was comparable between France and the ROW. Conclusions Results from this exploratory analysis suggest that patients with sustained SAC not receiving concomitant heparin may benefit from ART-123, a fact that should be confirmed in future studies with more restrictive inclusion criteria.
Changes in tooth brushing frequency and its associated factors from 2006 to 2014 among French adolescents: Results from three repeated cross sectional HBSC studies
Gabriel Fernandez de Grado, Virginie Ehlinger, Emmanuelle Godeau, Catherine Arnaud, Cathy Nabet, Nadia Benkirane-Jessel, Anne-Marie Musset, Damien Offner
PLoS ONE, 2021, 16 (3), pp.e0249129. ⟨10.1371/journal.pone.0249129⟩
Article dans une revueAbstractObjectives: This study aimed to evaluate in the changes in the percentage of adolescents who brush their teeth twice a day and the association with socio-economic status and health behaviors between 2006, 2010 and 2014 among adolescents from the French cross-sectional studies of the Health Behavior in School-aged Children (HBSC) survey. Methods: Our sample included 18727 adolescents aged 11, 13 or 15 years old (y/o). The relationship between toothbrushing frequency (TBF) and eating habits, health and socio-economic status markers, family status, school perception, substance use, sedentary lifestyle and physical activity, together with their evolution over the 3 studies, were investigated using multivariate logistic regression. Results: The proportion of adolescents brushing twice a day increased from 68.8% in 2006 to 70.8% in 2010 and 78.8% in 2014 (p<0.0001). Notable associated factors (p<0.0001) were: being a girl (adjusted Odds Ratio = 1.5) and, even more, an older girl (aOR 1.5 for 15 y/o vs 11 y/o girls), having breakfast (aOR 1.4) and eating fruits daily (aOR 1.6), excellent perceived health (aOR 1.2), obesity or overweight (aOR 0.6), being bullied at school (aOR 0.8), and perceived family wealth (aOR 1.4 for High vs Low). No impact from any associated factor changed over the 3 studies. Conclusions: Among French adolescents, TBF improved from 2006 to 2014. TBF was significantly associated with other health behaviors. These associations stayed similar in 2006, 2010 and 2010. This increase in TBF may be linked with global prevention programs developed during this time period. These programs should be maintained and associated with more specific ones targeting and adapted to disadvantaged populations, in order to reduce inequalities in oral hygiene and oral health.
Acute‐onset delirium in intensive care COVID patients: association of imperfect brain repair with foodborne micro‐pollutants
Francis Schneider, Arnaud Agin, Mathieu Baldacini, Loïc Maurer, Maleka Schenck, Mathieu Alemann, Morgane Solis, Julie Helms, Claire Villette, Thierry Artzner, Stephane Kremer, Dimitri Heintz
European Journal of Neurology, 2021, ⟨10.1111/ene.14776⟩
Article dans une revuemiRNAs Potentially Involved in Post Lung Transplant-Obliterative Bronchiolitis: The Role of miR-21-5p
Sara Bozzini, Laura Pandolfi, Elena Rossi, Simona Inghilleri, Michele Zorzetto, Giuseppina Ferrario, Stefano Di Carlo, Gianfranco Politano, Annalisa de Silvestri, Vanessa Frangipane, Michele Porzio, Romain Kessler, Fiorella Calabrese, Federica Meloni, Patrizia Morbini
Cells, 2021, 10 (3), ⟨10.3390/cells10030688⟩
Article dans une revueAbstractEpigenetic changes, including miRNAs deregulation, have been suggested to play a significant role in development of obliterative bronchiolitis (OB) in transplanted lungs. Many studies have tried to identify ideal candidate miRNAs and the downstream pathways implicated in the bronchiolar fibro-obliterative process. Several candidate miRNAs, previously indicated as possibly being associated with OB, were analyzed by combining the quantitative real time-polymerase chain reaction (qRT-PCR) and in situ hybridization (ISH) of lung tissues of OB affected patients. Disease and OB-lesion-specific expression of miR-21-5p was confirmed and by computational analysis we were able to identify the network of genes most probably associated miR-21-5p in the context of OB fibrogenesis. Among all potentially associated genes, STAT3 had a very high probability score. Immunohistochemistry showed that STAT3/miR-21-5p were co-over expressed in OB lesions, thus, suggesting miR-21-5p could regulate STAT3 expression. However, miR-21-5p inhibition in cultures of bronchiolitis obliterans syndrome (BOS) derived myofibroblasts did not significantly affect STAT3 mRNA and protein expression levels. This study demonstrates the specificity of miR-21-5p over-expression in OB lesions and contributes to existing knowledge on the miR-21-5p downstream pathway. Activation of STAT3 is associated with miR-21-5p upregulation, however, STAT-3 network activation is most likely complex and miR-21-5p is not the sole regulator of STAT3.
Cannulation strategies for intraoperative mechanical cardio-respiratory support in general thoracic surgery
João Santos Silva, Jorge Pinheiro Santos, Paulo Almeida Calvinho, Anne Olland, Pierre-Emmanuel Falcoz
Current Challenges in Thoracic Surgery, 2021, 5, pp.30 - 30. ⟨10.21037/ccts-21-3⟩
Article dans une revueAbstractIn general thoracic surgery, extracorporeal mechanical cardio-respiratory support (EMCS) techniques are performed intraoperatively mainly for respiratory but also for cardiocirculatory support. The increasing panel of EMCS technologies available in thoracic surgery is the result of a century of clinical practices, engineering progress, and improvements of physiological knowledge. Complex procedures of tumor resection, traqueal and main airway surgery or lung transplantation are the scenarios where these techniques should be considered if needed. The aim of this review is to describe different modalities of EMCS used in general thoracic surgery with a particular attention to the cannulation techniques.<p>Venovenous extracorporeal membrane oxygenation (VV-ECMO) is the most common EMCS modality and represents the most efficient in supporting lung function. Venoarterial ECMO (VA-ECMO) may be achieved in both central and peripheral cannulation. Central VA-ECMO is the main modality for intraoperative emergent support, which brought a decrease in popularity of classic cardiopulmonary bypass (CPB) due to lower risk of complications. Peripheral VA-ECMO is traditionally performed in a femorofemoral configuration. Extracorporeal CO 2 removal (ECCO 2 R) and Novalung are marginal alternatives for intraoperative support during general thoracic surgery. Although rarely used, ECMS techniques should be part of every general thoracic surgeon armamentarium and should be brought to mind in complex cases or in emergency settings.</p>
Angiotensin II-induced upregulation of SGLT1 and 2 contributes to human microparticle‐stimulated endothelial senescence and dysfunction: protective effect of gliflozins
Sin-Hee Park, Eugenia Belcastro, Hira Hasan, Kensuke Matsushita, Benjamin Marchandot, Malak Abbas, Florence Toti, Cyril Auger, Laurence Jesel, Patrick Ohlmann, Olivier Morel, Valérie B Schini-Kerth
Cardiovascular Diabetology, 2021, 20 (1), ⟨10.1186/s12933-021-01252-3⟩
Article dans une revueAbstractAbstract Background Sodium-glucose cotransporter 2 (SGLT2) inhibitors reduced cardiovascular risk in type 2 diabetes patients independently of glycemic control. Although angiotensin II (Ang II) and blood-derived microparticles are major mediators of cardiovascular disease, their impact on SGLT1 and 2 expression and function in endothelial cells (ECs) and isolated arteries remains unclear. Methods ECs were isolated from porcine coronary arteries, and arterial segments from rats. The protein expression level was assessed by Western blot analysis and immunofluorescence staining, mRNA levels by RT-PCR, oxidative stress using dihydroethidium, nitric oxide using DAF-FM diacetate, senescence by senescence-associated beta-galactosidase activity, and platelet aggregation by aggregometer. Microparticles were collected from blood of patients with coronary artery disease (CAD-MPs). Results Ang II up-regulated SGLT1 and 2 protein levels in ECs, and caused a sustained extracellular glucose- and Na + -dependent pro-oxidant response that was inhibited by the NADPH oxidase inhibitor VAS-2780, the AT1R antagonist losartan, sotagliflozin (Sota, SGLT1 and SGLT2 inhibitor), and empagliflozin (Empa, SGLT2 inhibitor). Ang II increased senescence-associated beta-galactosidase activity and markers, VCAM-1, MCP-1, tissue factor, ACE, and AT1R, and down-regulated eNOS and NO formation, which were inhibited by Sota and Empa. Increased SGLT1 and SGLT2 protein levels were observed in the rat aortic arch, and Ang II- and eNOS inhibitor-treated thoracic aorta segments, and were associated with enhanced levels of oxidative stress and prevented by VAS-2780, losartan, Sota and Empa. CAD-MPs promoted increased levels of SGLT1, SGLT2 and VCAM-1, and decreased eNOS and NO formation in ECs, which were inhibited by VAS-2780, losartan, Sota and Empa. Conclusions Ang II up-regulates SGLT1 and 2 protein expression in ECs and arterial segments to promote sustained oxidative stress, senescence and dysfunction. Such a sequence contributes to CAD-MPs-induced endothelial dysfunction. Since AT1R/NADPH oxidase/SGLT1 and 2 pathways promote endothelial dysfunction, inhibition of SGLT1 and/or 2 appears as an attractive strategy to enhance the protective endothelial function.
Correction to: Safety of denervation following targeted lung denervation therapy for COPD: AIRFLOW-1 3-year outcomes
Christophe Pison, Pallav L. Shah, Dirk-Jan Slebos, Vincent Ninane, Wim Janssens, Thierry Perez, Romain Kessler, Gaetan Deslee, Justin L. Garner, Jorine E. Hartman, Bruno Degano, Anna Mayr, Martin Mayse, Alexander D. Peterson, Arschang Valipour
Respiratory Research, 2021, 22 (1), ⟨10.1186/s12931-021-01678-z⟩
Article dans une revueAbstractFollowing publication of the original article [1], we were notified that the first and last author names have been swapped.
Feasibility of Real-Time Continuous Glucose Monitoring Telemetry System in an Inpatient Diabetes Unit: A Pilot Study
Clémentine Dillmann, Lamia Amoura, Fatéma Fall Mostaine, Adrien Coste, Leila Bounyar, Laurence Kessler
Journal of diabetes science and technology, 2021, 16 (4), ⟨10.1177/1932296821994586⟩
Article dans une revueAbstractBACKGROUND: Hospitalization of persons with diabetes in an inpatient diabetes unit is challenging, notably for patients having different profiles. We aimed to evaluate the feasibility and the benefit of a continuous glucose monitoring (CGM) telemetry system to control glucose excursions in hospitalized patients with diabetes, according to their diabetes type and the reasons for their hospitalization. METHOD: A prospective pilot study was conducted in 53 insulin-requiring diabetes patients hospitalized in the general ward. Glucose was monitored using Guardian Connect (GC, Medtronic) to adopt insulin therapy. The time in range (TIR, target 70-180 mg/dL), the time below range (TBR), and the time above range (TAR) were recorded by GC between the start of hospitalization (SH) and end of hospitalization (EH), and analyzed according to the diabetes type (type 1 diabetes n = 28, type 2 diabetes n = 25) and the reasons for hospitalization (acute complications n = 35, therapeutic education n = 18). Patient and caregiver satisfaction was also assessed. RESULTS: In patients with type 2 diabetes and those hospitalized for acute complications, TIR significantly increased between the SH and EH, from 75.7% (95%CI 48.5-84.6) to 82.2% (95%CI 63.2-91.8) P = 0.043 and from 58.3% (95%CI 46.3-69.7) to 66.4% (95%CI 55.6-75.5) P = 0.031, respectively, and TAR significantly decreased, with no change in TBR. In patients with diabetes hospitalized for therapeutic education, TBR significantly decreased from 3.4% (95%CI 0-9.4) to 0% (95%CI 0-3.8) P = 0.037. Finally, 94% of patients and caregivers deemed the GC system useful. CONCLUSIONS: CGM telemetry system use is feasible and well accepted in patients hospitalized in diabetes care unit and could be useful to improve therapeutic education and metabolic control, especially for specific homogenous populations with diabetes.
Orofacial manifestations and dental management of systemic lupus erythematosus: A review
Merve Benli, Fareeha Batool, Céline Stutz, Catherine Petit, Sophie Jung, Olivier Huck
Oral Diseases, 2021, 27 (2), pp.151-167. ⟨10.1111/odi.13271⟩
Article dans une revueSARS-CoV-2 viral load in nasopharyngeal swabs in the emergency department does not predict COVID-19 severity and mortality
Pierrick Le Borgne, Morgane Solis, François Severac, Hamid Merdji, Yvon Ruch, Karim Intern, Eric Bayle, Yves Hansmann, Pascal Bilbault, Samira Fafi-Kremer, Ferhat Meziani
Academic Emergency Medicine, 2021, 28 (3), pp.306-313. ⟨10.1111/acem.14217⟩
Article dans une revueAbstractIntroduction The ongoing COVID-19 pandemic has led to devastating repercussions on health care systems worldwide. This viral infection has a broad clinical spectrum (ranging from influenza-like disease, viral pneumonia, and hypoxemia to acute respiratory distress syndrome requiring prolonged intensive care unit stays). The prognostic impact of measuring viral load on nasopharyngeal swab specimens (by reverse transcriptase polymerase chain reaction [RT-PCR]) is yet to be elucidated. Methods Between March 3 and April 5, 2020, we conducted a retrospective study on a cohort of COVID-19 patients (mild or severe disease) who were hospitalized after presenting to the emergency department (ED) and had at least one positive nasopharyngeal swab during their hospital stay. We led our study at the University Hospitals of Strasbourg in the Greater East region of France, one of the pandemic's epicenters in Europe. Results We have collected samples from a cohort of 287 patients with a confirmed diagnosis of COVID-19 who were included in our study. Nearly half of them (50.5%) presented a mild form of the disease, while the other half (49.5%) presented a severe form, requiring mechanical ventilation. Median (interquartile range) viral load on the initial upper respiratory swab at admission was 4.76 (3.29–6.06) log10 copies/reaction. When comparing survivors and nonsurvivors, this viral load measurement did not differ according to subgroups (p = 0.332). Additionally, we have found that respiratory viral load measurement was predictive of neither in-hospital mortality (adjusted odds ratio [AOR] = 1.05, 95% confidence interval [CI] = 0.85 to 1.31, p = 0.637) nor disease severity (AOR = 0.88, 95% CI = 0.73 to 1.06, p = 0.167). Conclusion Respiratory viral load measurement on the first nasopharyngeal swab (by RT-PCR) during initial ED management is neither a predictor of severity nor a predictor of mortality in SARS-CoV-2 infection. Host response to this viral infection along with the extent of preexisting comorbidities might be more foretelling of disease severity than the virus itself.
Aminotransferases disorders associated with venous thromboembolic events in patients infected with COVID-19
Amer Hamadé, Bastien Woehl, Marjolaine Talbot, Naouel Bensalah, Pierre Michel, Golnaz Obringer, Michèle Lehn-Hogg, Nathalie Buschenrieder, Mahdi Issa, Jonathan Tousch, Dominique Stephan, Lucas Jambert
Annals, 2021, 21, pp.100274. ⟨10.1016/j.aohep.2020.10.002⟩
Article dans une revueCurrent practice and perceptions of safety protocols for the use of intraperitoneal chemotherapy in the operating room: results of the IP-OR international survey
Daniel Clerc, Martin Hübner, K.R. Ashwin, S.P. Somashekhar, Beate Rau, Wim Ceelen, Wouter Willaert, Naoual Bakrin, Nathalie Laplace, Mohammed Al Hosni, Edgar Luis Garcia Lozcano, Sebastian Blaj, Pompiliu Piso, Andrea Di Giorgio, Giuseppe Vizzelli, Cécile Brigand, Jean-Baptiste Delhorme, Amandine Klipfel, Rami Archid, Giorgi Nadiradze, Marc Reymond, Olivia Sgarbura
Pleura and peritoneum, 2021, 6 (1), pp.39-45. ⟨10.1515/pp-2020-0148⟩
Article dans une revueAbstractAbstract Objectives To assess the risk perception and the uptake of measures preventing environment-related risks in the operating room (OR) during hyperthermic intraperitoneal chemotherapy (HIPEC) and pressurized intraperitoneal aerosol chemotherapy (PIPAC). Methods A multicentric, international survey among OR teams in high-volume HIPEC and PIPAC centers: Surgeons (Surg), Scrub nurses (ScrubN), Anesthesiologists (Anest), Anesthesiology nurses (AnesthN), and OR Cleaning staff (CleanS). Scores extended from 0–10 (maximum). Results Ten centers in six countries participated in the study (response rate 100%). Two hundred and eleven responses from 68 Surg (32%), 49 ScrubN (23%), 45 Anest (21%), 31 AnesthN (15%), and 18 CleanS (9%) were gathered. Individual uptake of protection measures was 51.4%, similar among professions and between HIPEC and PIPAC. Perceived levels of protection were 7.57 vs. 7.17 for PIPAC and HIPEC, respectively (p<0.05), with Anesth scoring the lowest (6.81). Perceived contamination risk was 4.19 for HIPEC vs. 3.5 for PIPAC (p<0.01). Information level was lower for CleanS and Anesth for HIPEC and PIPAC procedures compared to all other responders (6.48 vs. 4.86, and 6.48 vs. 5.67, p<0.01). Willingness to obtain more information was 86%, the highest among CleanS (94%). Conclusions Experience with the current practice of safety protocols was similar during HIPEC and PIPAC. The individual uptake of protection measures was rather low. The safety perception was better for PIPAC, but the perceived level of protection remained relatively low. The willingness to obtain more information was high. Intensified, standardized training of all OR team members involved in HIPEC and PIPAC is meaningful.
Nationwide incidence of sarcomas and connective tissue tumors of intermediate malignancy over four years using an expert pathology review network
Gonzague de Pinieux, Marie Karanian, Francois Le Loarer, Sophie Le Guellec, Sylvie Chabaud, Philippe Terrier, Corinne Bouvier, Maxime Batistella, Agnès Neuville, Yves-Marie Robin, Jean-Francois Emile, Anne Moreau, Frederique Larousserie, Agnes Leroux, Nathalie Stock, Marick Lae, Francoise Collin, Nicolas Weinbreck, Sébastien Aubert, Florence Mishellany, Celine Charon-Barra, Sabrina Croce, Laurent Doucet, Isabelle Quintin-Rouet, Marie-Christine Chateau, Celine Bazille, Isabelle Valo, Bruno Chetaille, Nicolas Ortonne, Anne Brouchet, Philippe Rochaix, Anne Demuret, Jean-Pierre Ghnassia, Lenaig Mescam, Nicolas Macagno, Isabelle Birtwisle-Peyrottes, Christophe Delfour, Emilie Angot, Isabelle Pommepuy, Dominique Ranchere, Claire Chemin-Airiau, Myriam Jean-Denis, Yohan Fayet, Jean-Baptiste Courrèges, Nouria Mesli, Juliane Berchoud, Maud Toulmonde, Antoine Italiano, Axel Le Cesne, Nicolas Penel, Francoise Ducimetiere, Francois Gouin, Jean-Michel Coindre, Jean-Yves Blay
PLoS ONE, 2021, 16 (2), pp.e0246958. ⟨10.1371/journal.pone.0246958⟩
Article dans une revueAbstract<b>Background:</b> Since 2010, nationwide networks of reference centers for sarcomas (RREPS/NETSARC/RESOS) collected and prospectively reviewed all cases of sarcomas and connective tumors of intermediate malignancy (TIM) in France. <b>Methods: </b>The nationwide incidence of sarcoma or TIM (2013-2016) was measured using the 2013 WHO classification and confirmed by a second independent review by expert pathologists. Simple clinical characteristics, yearly variations and correlation of incidence with published clinical trials are presented and analyzed. <b>Results: </b>Over 150 different histological subtypes are reported from the 25172 patients with sarcomas (n = 18712, 74,3%) or TIM (n = 6460, 25.7%), with n = 5838, n = 6153, n = 6654, and n = 6527 yearly cases from 2013 to 2016. Over these 4 years, the yearly incidence of sarcomas and TIM was therefore 70.7 and 24.4 respectively, with a combined incidence of 95.1/106/year, higher than previously reported. GIST, liposarcoma, leiomyosarcomas, undifferentiated sarcomas represented 13%, 13%, 11% and 11% of tumors. Only GIST, as a single entity had a yearly incidence above 10/106/year. There were respectively 30, 64 and 66 different histological subtypes of sarcomas or TIM with an incidence ranging from 10 to 1/106, 1-0.1/106, or < 0.1/106/year respectively. The 2 latter incidence groups represented 21% of the patients with 130 histotypes. Published phase III and phase II clinical trials (p<10-6) are significantly higher with sarcomas subtypes with an incidence above 1/106 per. <b>Conclusions: </b>This nationwide registry of sarcoma patients, with exhaustive histology review by sarcoma experts, shows that the incidence of sarcoma and TIM is higher than reported, and that tumors with a very low incidence (1<106/year) are less likely to be included in clinical trials.
Development of an innovative educational escape game to promote teamwork in dentistry
Pernilla Zaug, Catherine-Isabelle Gros, Delphine Wagner, Elise Pilavyan, Florent Meyer, Damien Offner, Marion Strub
European Journal of Dental Education, 2021, ⟨10.1111/eje.12678⟩
Article dans une revueAbstractBackground: Escape games have proven to be an innovative pedagogical tool that allows students to use the professional skills they acquired. The appeal of the game lies in the stimulation of the players' minds and in the diversity of the puzzles. Purpose/objectives: To evaluate the effectiveness of an educational tool aimed at cultivating team spirit and group cohesion in dentistry students through a fun collaborative activity that mobilises their knowledge and skills. Materials and method: Twenty-four students participated to the escape game over a one-day period. In order to win, they had to solve dentistry-related puzzles. Results: Feedback was strongly positive. The balance between manipulations and theoretical questions stimulated them. Students did favour this type of activity which allows to increase interactions between students as well as with the teaching team. Conclusion: Escape games in dental schools foster a supportive learning environment and stimulated students' motivation and group cohesion. Keywords: dental students; dentistry; educational tool; escape game; serious game; teamwork.
The Effect of Transoesophageal Echocardiography on Treatment Change in a High-Volume Stroke Unit
Camille Siegel, Benjamin Marchandot, Kensuke Matsushita, Antonin Trimaille, Corina Mirea, Marilou Peillex, François Sauer, Cecile How-Choong, Floriane Zeyons, Olivier Rouyer, Annie Trinh, Helene Petit-Eisenmann, Laurence Jesel, Patrick Ohlmann, Valérie Wolff, Olivier Morel
Journal of Clinical Medicine, 2021, 10 (4), ⟨10.3390/jcm10040805⟩
Article dans une revueAbstractBackground and purpose-current guidelines recommend the use of transesophageal echocardiography (TEE) in relation to cardio-embolic sources of stroke. Methods-by using an hospital-based cohort, we retrospectively analyzed consecutive patients with acute ischemic stroke (AIS), acute hemorrhagic stroke (AHS) and transient ischemic attack (TIA) who were admitted in Strasbourg Stroke Center, France between November 2017 to December 2018. TEE reports were screened for detection of potential cardiac sources of embolism and the subsequent change in medical management. We performed univariate and multivariate analyses to identify predictors of relevant TEE findings. Results-out of the 990 patients admitted with confirmed stroke, 432 patients (42.6%) underwent TEE. Patients with TEE were younger (62.8 ± 14.8 vs. 73.8, p < 0.001), presented less comorbidities and lower stroke severity assessed by lower NIHSS (2 IQR (0-4) vs. 3 IQR (0-10), p < 0.01) and Modified Rankin Scale (1 IQR (0-1) vs. 1 (0-3), p < 0.01). A total of 227 examinations (52.5%) demonstrated abnormal findings considered as potential cardiac sources of embolism and 31 examinations (7.1%) were followed by subsequent change in medical management. Age (HR: 0.948, 95% CI 0.923 to 0.974; p < 0.001), previous AIS (HR: 3.542, 95% CI 1.290 to 9.722; p = 0.01), previous TIA (HR: 7.830, CI 95% 2214 to 27,689; p = 0.001) and superficial middle cerebral artery territory infarction (HR: 2.774, CI 95% 1.168-6.589; p = 0.021) were strong independent predictors with change in medical management following TEE. Conclusions-additional TEE changed the medical course of stroke patients in 7.1% in a French high-volume stroke unit.
The pH-Induced Specific Area Changes of Unsaturated Lipids Deposited onto a Bubble Interface
Nicolas Anton, Philippe Pierrat, Germain Brou, Gildas Gbassi, Ziad Omran, Luc Lebeau, Thierry Vandamme, Patrick Bouriat
Langmuir, 2021, ⟨10.1021/acs.langmuir.0c03046⟩
Article dans une revueDo Blood Eosinophils Predict in-Hospital Mortality or Severity of Disease in SARS-CoV-2 Infection? A Retrospective Multicenter Study
Pierrick Le Borgne, Laure Abensur Vuillaume, Karine Alamé, François Lefebvre, Sylvie Chabrier, Lise Bérard, Pauline Haessler, Stéphane Gennai, Pascal Bilbault, Charles-Eric Lavoignet
Microorganisms, 2021, 9 (2), pp.334. ⟨10.3390/microorganisms9020334⟩
Article dans une revueAbstractIntroduction: Healthcare systems worldwide have been battling the ongoing COVID-19 pandemic. Eosinophils are multifunctional leukocytes implicated in the pathogenesis of several inflammatory processes including viral infections. We focus our study on the prognostic value of eosinopenia as a marker of disease severity and mortality in COVID-19 patients. Methods: Between 1 March and 30 April 2020, we conducted a multicenter and retrospective study on a cohort of COVID-19 patients (moderate or severe disease) who were hospitalized after presenting to the emergency department (ED). We led our study in six major hospitals of northeast France, one of the outbreak’s epicenters in Europe. Results: We have collected data from 1035 patients, with a confirmed diagnosis of COVID-19. More than three quarters of them (76.2%) presented a moderate form of the disease, while the remaining quarter (23.8%) presented a severe form requiring admission to the intensive care unit (ICU). Mean circulating eosinophils rate, at admission, varied according to disease severity (p < 0.001), yet it did not differ between survivors and non-survivors (p = 0.306). Extreme eosinopenia (=0/mm3) was predictive of severity (aOR = 1.77, p = 0.009); however, it was not predictive of mortality (aOR = 0.892, p = 0.696). The areas under the Receiver operating characteristics (ROC) curve were, respectively, 58.5% (CI95%: 55.3–61.7%) and 51.4% (CI95%: 46.8–56.1%) for the ability of circulating eosinophil rates to predict disease severity and mortality. Conclusion: Eosinopenia is very common and often profound in cases of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Eosinopenia was not a useful predictor of mortality; however, undetectable eosinophils (=0/mm3) were predictive of disease severity during the initial ED management.
An abdominal mass
Karine Alamé, Philippe Kauffmann, Alexandre Bitoun, Benjamin Lehr, Pierrick Le Borgne
La Revue de Médecine Interne, 2021, 42 (2), pp.142-143. ⟨10.1016/j.revmed.2020.06.008⟩
Article dans une revueIsoforms of the p53 Family and Gastric Cancer: A Ménage à Trois for an Unfinished Affair
Anais Blanchet, Agathe Bourgmayer, Jean-Emmanuel Kurtz, Georg Mellitzer, Christian Gaiddon
Cancers, 2021, 13 (4), pp.916. ⟨10.3390/cancers13040916⟩
Article dans une revueAbstractGastric cancer is one of the most aggressive cancers, with a median survival of 12 months. This illustrates its complexity and the lack of therapeutic options, such as personalized therapy, because predictive markers do not exist. Thus, gastric cancer remains mostly treated with cytotoxic chemotherapies. In addition, less than 20% of patients respond to immunotherapy. TP53 mutations are particularly frequent in gastric cancer (±50% and up to 70% in metastatic) and are considered an early event in the tumorigenic process. Alterations in the expression of other members of the p53 family, i.e., p63 and p73, have also been described. In this context, the role of the members of the p53 family and their isoforms have been investigated over the years, resulting in conflicting data. For instance, whether mutations of TP53 or the dysregulation of its homologs may represent biomarkers for aggressivity or response to therapy still remains a matter of debate. This uncertainty illustrates the lack of information on the molecular pathways involving the p53 family in gastric cancer. In this review, we summarize and discuss the most relevant molecular and clinical data on the role of the p53 family in gastric cancer and enumerate potential therapeutic innovative strategies.
Pathophysiology of Takotsubo Syndrome: JACC State-of-the-Art Review
Alexander Lyon, Rodolfo Citro, Birke Schneider, Olivier Morel, Jelena Ghadri, Christian Templin, Elmir Omerovic
Journal of the American College of Cardiology, 2021, 77 (7), pp.902-921. ⟨10.1016/j.jacc.2020.10.060⟩
Article dans une revueAbstractTakotsubo syndrome (TTS) has been a recognized clinical entity for 31 years, since its first description in 1990. TTS is now routinely diagnosed in patients who present with acute chest pain, electrocardiographic changes, troponin elevation, unobstructed coronary arteries, and a typical pattern of circumferential left ventricular wall motion abnormalities that usually involve the apical and midventricular myocardium. Increasing understanding of this intriguing syndrome stems from wider recognition, possible increasing frequency, and a rising number of publications focused on the pathophysiology in clinical and laboratory studies. A comprehensive understanding of TTS pathophysiology and evidence-based treatments are lacking, and specific and effective treatments are urgently required. This paper reviews the pathophysiology of this fascinating syndrome; what is known from both clinical and preclinical studies, including review of the evidence for microvascular dysfunction, myocardial beta-adrenergic signaling, inflammation, and electrophysiology; and where focused research needs to fill gaps in understanding TTS.
Influence of psychological stress on non‐surgical periodontal treatment outcomes in patients with severe chronic periodontitis
Catherine Petit, Victor Anadon‐rosinach, Laurence Rettig, Catherine Schmidt‐mutter, Nicolas Tuzin, Jean‐luc Davideau, Olivier Huck
Journal of periodontology, 2021, 92 (2), pp.186-195. ⟨10.1002/JPER.20-0105⟩
Article dans une revueFunctional and anatomical outcomes after successful repair of macula‐off retinal detachment: a 12‐month follow‐up of the DOREFA study
Florian Baudin, Clémence Deschasse, Pierre‐henry Gabrielle, Jean Berrod, Yannick Le Mer, Carl Arndt, Ramin Tadayoni, Marie-Noëlle Delyfer, Michel Weber, David Gaucher, Maher Saleh, Christophe Chiquet, Catherine Creuzot-Garcher
Acta Ophthalmologica Scandinavica -Supplement-, 2021, 11 (10), pp.14777. ⟨10.1111/aos.14777⟩
Article dans une revueAbstractPURPOSE: To report visual and anatomical outcomes and determine predictors of good visual acuity (VA) recovery after macula-off rhegmatogenous retinal detachment (RD). METHODS: Prospective multicentre study including 115 eyes from 115 patients successfully operated on for RD, with assessment of VA and spectral-domain optical coherence tomography (SD-OCT) macular images at 1, 3, 6 and 12 months after surgery. RESULTS: Over the follow-up period, VA significantly improved from median [IQR] 62 [46; 72] ETDRS letters at 1 month to 75 [67; 80] ETDRS letters at 12 months (p < 0.001) with a concomitant decreased number of eyes with any SD-OCT lesions (p < 0.001). The presence of subretinal fluid (SRF) significantly decreased (p < 0.001), as did the number of photoreceptor (PR) layer lesions (p = 0.04). At 12 months, lesions in the PR layer and poor VA recovery were significantly associated with a longer time to surgery (p = 0.007 and p < 0.001, respectively). The rate of patients without PR lesions increased from 40.9% at 1 month to 60.0% at 6 months and 73.9% at 12 months (p < 0.001). The incidence of epiretinal membrane (ERM) significantly increased (p < 0.001), while cystoid macular oedema (CME) remained stable over time. Visual acuity (VA) at 3 months postoperatively was a good reflection of final VA recovery (p < 0.001). CONCLUSION: Visual acuity (VA) improved in parallel with the decreasing number of eyes with SD-OCT lesions after macula-off rhegmatogenous RD. A long time to surgery was the only preoperative factor associated with poor VA recovery after retinal detachment surgery.
Primary Hepatic Lymphoma After Lung Transplantation: A Report of 2 Cases
Edoardo Maria Muttillo, Tristan Degot, Matthieu Canuet, Marianne Riou, Benjamin Renaud-Picard, Sandrine Hirschi, Blandine Guffroy, Romain Kessler, Anne Olland, Pierre-Emmanuel Falcoz, Patrick Pessaux, Emanuele Felli
Transplantation Proceedings, 2021, 53 (2), pp.692-695. ⟨10.1016/j.transproceed.2021.01.030⟩
Article dans une revueAbstractBackground. Diffuse large B-cell lymphoma (DLBCL) is the most common subtype of non -Hodgkin lymphoma in the posttransplant setting. Treatment is based on chemotherapy; surgery is still debated and should be performed in very select cases. Methods. We observed 2 patients out of 300 who underwent lung transplantation in the Nouvel Hopital Civil between 2013 and 2019 with primary hepatic lymphoma. Chemotherapy with a rituximab-cyclophosphamide, hydroxydaunorubicin, vincristine, prednisone protocol was performed in all patients. Mycophenolate mofetil was interrupted before treatment, and everolimus was introduced after chemotherapy by associating tacrolimus withdrawal. Results. One patient showed complete remission; after 7 years, no recurrence has been noticed. The second is still undergoing chemotherapy with no signs of disease progression. Conclusions. DLBCL risk is higher in solid organ transplant recipients than in the general population. Primary hepatic lymphoma diagnosis is often difficult and based on histologic findings after initial clinical and radiological suspicion of primary or secondary liver neoplasia. Diagnosis is challenging because no clinical, radiological, or biological features exist. Biopsy is always indicated for histologic confirmation. Chemotherapy is the mainstay of therapy, but surgery may be indicated in very select patients.
Higher anticoagulation targets and risk of thrombotic events in severe COVID-19 patients: bi-center cohort study
Julie Helms, François Severac, Hamid Merdji, Maleka Schenck, Raphaël Clere-Jehl, Mathieu Baldacini, Mickaël Ohana, Lélia Grunebaum, Vincent Castelain, Eduardo Angles-Cano, Laurent Sattler, Ferhat Meziani
Annals of Intensive Care, 2021, 11 (1), pp.14. ⟨10.1186/s13613-021-00809-5⟩
Article dans une revueAbstractBackground Thromboprophylaxis of COVID-19 patients is a highly debated issue. We aimed to compare the occurrence of thrombotic/ischemic events in COVID-19 patients with acute respiratory distress syndrome (ARDS) treated with either prophylactic or therapeutic dosage of heparin. All patients referred for COVID-19 ARDS in two intensive care units (ICUs) from two centers of a French tertiary hospital were included in our cohort study. Patients were compared according to their anticoagulant treatment to evaluate the risk/benefit of prophylactic anticoagulation versus therapeutic anticoagulation. Medical history, symptoms, biological data and imaging were prospectively collected. Results One hundred and seventy-nine patients (73% men) were analyzed: 108 in prophylactic group and 71 in therapeutic group. Median age and SAPS II were 62 [IQR 51; 70] years and 47 [IQR 37; 63] points. ICU mortality rate was 17.3%. Fifty-seven patients developed clinically relevant thrombotic complications during their ICU stay, less frequently in therapeutic group (adjusted OR 0.38 [0.14-0.94], p = 0.04). The occurrences of pulmonary embolism (PE), deep vein thrombosis (DVT) and ischemic stroke were significantly lower in the therapeutic group (respective adjusted OR for PE: 0.19 [0.03-0.81]; DVT: 0.13 [0.01-0.89], stroke: 0.06 [0-0.68], all p < 0.05). The occurrence of bleeding complications was not significantly different between groups, neither were ICU length of stay or mortality rate. D-dimer levels were significantly lower during ICU stay, and aPTT ratio was more prolonged in the therapeutic group (p < 0.05). Conclusion Increasing the anticoagulation of severe COVID-19 patients to a therapeutic level might decrease thrombotic complications without increasing their bleeding risk.
The atypical cadherin MUCDHL antagonizes colon cancer formation and inhibits oncogenic signaling through multiple mechanisms
Marine Beck, Mathilde Baranger, Ahlam Moufok-Sadoun, Emilie Bersuder, Isabelle Hinkel, Georg Mellitzer, Elisabeth Martin, Laetitia Marisa, Isabelle Duluc, Aurelien de Reynies, Christian Gaiddon, Jean-Noël Freund, Isabelle Gross
Oncogene, 2021, 40, pp.522-535. ⟨10.1038/s41388-020-01546-y⟩
Article dans une revueCombined In Vitro and In Vivo Approaches to Propose a Putative Adverse Outcome Pathway for Acute Lung Inflammation Induced by Nanoparticles: A Study on Carbon Dots
Maud Weiss, Jiahui Fan, Mickaël Claudel, Luc Lebeau, Francoise Pons, Carole Ronzani
Nanomaterials, 2021, 11 (1), pp.180. ⟨10.3390/nano11010180⟩
Article dans une revuePsychological effects of remote-only communication among reference persons of ICU patients during COVID-19 pandemic
Jessy Cattelan, Sara Castellano, Hamid Merdji, Jean Audusseau, Baptiste Claude, Léa Feuillassier, Sibylle Cunat, Marc Astrié, Camille Aquin, Guillaume Buis, Edgar Gehant, Amandine Granier, Hassiba Kercha, Camille Le Guillou, Guillaume Martin, Kevin Roulot, Ferhat Meziani, Olivier Putois, Julie Helms
Journal of Intensive Care, 2021, 9 (1), ⟨10.1186/s40560-020-00520-w⟩
Article dans une revueKnowledge and Opinions of French Dental Students Toward Occlusal and Proximal Restorative Thresholds.
Marie-Agnès Gasqui, Laurent Laforest, Justine Le Clerc, Romain Ceinos, Florence Chemla, Valérie Chevalier, Pierre Colon, Florence Fioretti, Alexis Gevrey, Olivia Kérourédan, Delphine Maret, Caroline Mocquot, Canan Özcan, Bruno Pelissier, Fabienne Perez, Elodie Terrer, Yann-Loïg Turpin, Reza Arbab-Chirani, Sophie Doméjean, Dominique Seux
Oral Health and Preventive Dentistry, 2021, 19 (1), pp.383-389. ⟨10.3290/j.ohpd.b1749707⟩
Article dans une revueAbstractTo investigate the practices, knowledge and opinions of French dental students (FDSs) in various domains of minimal intervention (MI) in cariology.
Panton-Valentine Leucocidin of Staphylococcus aureus Induces Oxidative Stress and Neurotransmitter Imbalance in a Retinal Explant Model
Mathieu Wurtz, Elisa Ruhland, Xuanli Liu, Izzie-Jacques Namer, Viola Mazzoleni, Dan Lipsker, Daniel Keller, Gilles Prevost, David Gaucher
Investigative Ophthalmology & Visual Science, 2021, 62 (1), pp.4. ⟨10.1167/iovs.62.1.4⟩
Article dans une revueIn Vitro Impact of Pro-Senescent Endothelial Microvesicles on Isolated Pancreatic Rat Islets Function
Mohamad Kassem, Ali El Habhab, Guillaume Kreutter, Lamia Amoura, Philippe Baltzinger, Malak Abbas, Noura Sbat, Fatiha Zobairi, Valerie Schini-Kerth, Laurence Kessler, Florence Toti
Transplantation Proceedings, 2021, 53 (5), pp.1736-1743. ⟨10.1016/j.transproceed.2021.02.023⟩
Article dans une revueAbstractBackground: Ischemia-driven islet isolation procedure is one of the limiting causes of pancreatic islet transplantation. Ischemia-reperfusion process is associated with endothelium dysfunction and the release of pro-senescent microvesicles. We investigated whether pro-senescent endothelial microvesicles prompt islet senescence and dysfunction in vitro. Material and methods: Pancreatic islets were isolated from male young rats. Replicative endothelial senescence was induced by serial passaging of primary porcine coronary artery endothelial cells, and microvesicles were isolated either from young passage 1 (P1) or senescent passage 3 (P3) endothelial cells. Islet viability was assessed by fluorescence microscopy, apoptosis by flow cytometry, and Western blot. Function was assessed by insulin secretion and islet senescence markers p53, p21, and p16 by Western blot. Microvesicles were stained by the PKH26 lipid fluorescent probe and their islet integration assessed by microscopy and flow cytometry. Results: Regardless of the passage, half microvesicles were integrated in target islets after 24 hours incubation. Insulin secretion significantly decreased after treatment by senescent microvesicles (P3: 1.7 ± 0.2 vs untreated islet: 2.7 ± 0.2, P < .05) without altering the islet viability (89.47% ± 1.69 vs 93.15% ± 0.97) and with no significant apoptosis. Senescent microvesicles significantly doubled the expression of p53, p21, and p16 (P < .05), whereas young microvesicles had no significant effect. Conclusion: Pro-senescent endothelial microvesicles specifically accelerate the senescence of islets and alter their function. These data suggest that islet isolation contributes to endothelial driven islet senescence.
Eruption of Bioengineered Teeth: A New Approach Based on a Polycaprolactone Biomembrane
Céline Stutz, François Clauss, Olivier Huck, Georg Schulz, Nadia Benkirane-Jessel, Fabien Bornert, Sabine Kuchler-Bopp, Marion Strub
Nanomaterials, 2021, 11 (5), pp.1315. ⟨10.3390/nano11051315⟩
Article dans une revueAbstractObtaining a functional tooth is the ultimate goal of tooth engineering. However, the implantation of bioengineered teeth in the jawbone of adult animals never allows for spontaneous eruption due mainly to ankylosis within the bone crypt. The objective of this study was to develop an innovative approach allowing eruption of implanted bioengineered teeth through the isolation of the germ from the bone crypt using a polycaprolactone membrane (PCL). The germs of the first lower molars were harvested on the 14th day of embryonic development, cultured in vitro, and then implanted in the recipient site drilled in the maxillary bone of adult mice. To prevent the ankylosis of the dental germ, a PCL membrane synthesized by electrospinning was placed between the germ and the bone. After 10 weeks of follow-up, microtomography, and histology of the implantation site were performed. In control mice where germs were directly placed in contact with the bone, a spontaneous eruption of bioengineered teeth was only observed in 3.3% of the cases versus 19.2% in the test group where PCL biomembrane was used as a barrier (p < 0.1). This preliminary study is the first to describe an innovative method allowing the eruption of bioengineered tooth implanted directly in the jawbone of mice. This new approach is a hope for the field of tooth regeneration, especially in children with oligodontia in whom titanium implants are not an optimal solution.
Therapeutic Potential of Hemoglobin Derived from the Marine Worm Arenicola marina (M101): A Literature Review of a Breakthrough Innovation
Fareeha Batool, Eric Delpy, Franck Zal, Elisabeth Leize-Zal, Olivier Huck
Marine drugs, 2021, 19 (7), pp.376. ⟨10.3390/md19070376⟩
Article dans une revueAbstractOxygen (O 2) is indispensable for aerobic respiration and cellular metabolism. In case of injury, reactive oxygen species are produced, causing oxidative stress, which triggers cell damaging chemical mediators leading to ischemic reperfusion injuries (IRI). Sufficient tissue oxygenation is necessary for optimal wound healing. In this context, several hemoglobin-based oxygen carriers have been developed and tested, especially as graft preservatives for transplant procedures. However, most of the commercially available O 2 carriers increase oxidative stress and show some adverse effects. Interestingly, the hemoglobin derived from the marine lugworm Arenicola marina (M101) has been presented as an efficient therapeutic O 2 carrier with potential anti-inflammatory, antibacterial, and antioxidant properties. Furthermore, it has demonstrated promise as a supplement to conventional organ preservatives by reducing IRI. This review summarizes the properties and various applications of M101. M101 is an innovative oxygen carrier with several beneficial therapeutic properties, and further research must be carried out to determine its efficacy in the management of different pathologies.
Knowledge and opinions of French dental students related to caries risk assessment and dental sealants (preventive and therapeutic)
Justine Le Clerc, Marie-Agnès Gasqui, Laurent Laforest, Maxime Beaurain, Romain Ceinos, Florence Chemla, Valérie Chevalier, Pierre Colon, Florence Fioretti, Alexis Gevrey, Olivia Kérourédan, Delphine Maret, Caroline Mocquot, Canan Özcan, Bruno Pelissier, Fabienne Pérez, Elodie Terrer, Yann-Loïg Turpin, Reza Arbab-Chirani, Dominique Seux, Sophie Doméjean
Odontology, 2021, 109 (1), pp.41-52. ⟨10.1007/s10266-020-00527-7⟩
Article dans une revueAbstractObjectives - A national questionnaire study was performed to document knowledge and opinions of French dental students (FDSs) about minimal intervention (MI) in dentistry especially caries risk assessment (CRA) and dental sealants (DSs). Materials and methods - A questionnaire was administered to the fifth-year dental FDSs (n = 1370) from the 16 French dental schools. Descriptive and statistical analyses were performed. Results - The response rate was 84.5%. A large majority of respondents (87.8%) linked MI with minimally invasive dentistry and 77.4% considered MI as a concept based on prevention. About 80% stated they use CRA in clinical practice, mostly without any specific form. If 80.4% of the respondents would base their treatment plans on CRA, only 55.1% would regularly plan preventive regimens according to individual risk level. However, while 96.6% declared they perform preventive DSs, only 44.3% considered therapeutic sealants as a routine treatment. Although 75.1% of FDSs stated that they had sufficient learning and training related to CRA, 55.9% thought that they need further education about preventive and therapeutic DSs. Conclusion - Although FDSs seem to be aware of the importance of CRA and preventive strategies, this study shows the need to harmonize the teaching in cariology according to the latest European recommendations. Clinical relevance - A national questionnaire study showed variability towards knowledge and opinions of FDSs related to MI in cariology. This may impact care provisions in their future professional life showing the urgent need to harmonize the teaching of MI in cariology in France.
Comparative barrier membrane degradation over time: Pericardium versus dermal membranes
Fabien Bornert, Valentin Herber, Rebecca Sandgren, Lukasz Witek, Paulo G Coelho, Benjamin E Pippenger, Shakeel Shahdad
Clinical and Experimental Dental Research, 2021, 7 (5), pp.711-718. ⟨10.1002/cre2.414⟩
Article dans une revueAbstractObjective: The effectiveness of GBR procedures for the reconstruction of periodontal defects has been well documented. The objective of this investigation was to evaluate the degradation kinetics and biocompatibility of two resorbable collagen membranes in conjunction with a bovine xenograft material. Materials and Methods: Lower premolars and first molars were extracted from 18 male Yucatan minipigs. After 4 months of healing, standardized semi-saddle defects were created (12 mm x 8 mm x 8 mm [l x W x d]), with 10 mm between adjacent defects. The defects were filled with a bovine xenograft and covered with a either the bilayer collagen membrane (control) or the porcine pericardium-derived collagen membrane (test). Histological analysis was performed after 4, 8, and 12 weeks of healing and the amount of residual membrane evaluated. Non-inferiority was calculated using the Brunner-Langer mixed regression model. Results: Histological analysis indicated the presence of residual membrane in both groups at all time points, with significant degradation noted in both groups at 12 weeks compared to 4 weeks (p =.017). No significant difference in ranked residual membrane scores between the control and test membranes was detected at any time point. Conclusions: The pericardium-derived membrane was shown to be statistically noninferior to the control membrane with respect to resorption kinetics and barrier function when utilized for guided bone regeneration in semi-saddle defects in minipigs. Further evaluation is necessary in the clinical setting.
Prevalence of Depressive Symptoms and Associated Psychosocial Risk Factors among French University Students: The Moderating and Mediating Effects of Resilience
C.K. Kokou-Kpolou, A. Jumageldinov, S. Park, N. Nieuviarts, P.-G. Noorishad, J.M. Cénat
Psychiatric Quarterly, 2021, 92 (2), pp.443--457. ⟨10.1007/s11126-020-09812-8⟩
Article dans une revueAbstractUniversity students constitute a higher risk population for mental health problems, especially for depression. Given the lack of literature addressing such issues in France, this study estimated the prevalence rates of depression, its sociodemographic correlates in French university students [FUS], and examined whether resilience resources moderated and mediated the relationship between perceived stress and depressive symptoms. Participants (N = 1435, Mage = 20.5) completed the Beck Depression Inventory (BDI-II), the Perceived Stress Scale, the Brief Resilience Scale, and a sociodemographic questionnaire. Descriptive, multiple logistic regressions, and mediation analyses were used. With respect to the BDI-II's cutoff scores, 20.3% (95% CI: 18.3 to 22.4%) and 22.8% (95% CI: 20.7 to 25.0%) were positive to moderate and severe depression, respectively. Gender and education attainment appeared to be moderate risk factors when accounting for cumulative effect of perceived stress and resilience. Resilience buffered and partially mediated the perceived stress\textendash depression relationship. In conclusion, the prevalence of depression was higher in FUS, as reported in previous studies. The amount of academic and daily stress explained this prevalence. University students with low resilience level were more at risk. Interventions aiming to improve resilience skills could help to mitigate the negative effects of stress and to promote mental health in this population. \textcopyright 2020, Springer Science+Business Media, LLC, part of Springer Nature.
1742TiP RADIORYTHMIC: Phase III, opened, randomized study of post-operative radiotherapy (PORT) versus surveillance in stage IIb/III of Masaoka Koga thymoma after complete surgical resection
Clémence Basse, A Botticella, T Molina, Pierre-Emmanuel Falcoz, Youssef Oulkhouir, M Kerjouan, Eric Pichon, F Calcagno, Luc Thiberville, Xavier Quantin, C Clement-Duchene, J Khalifa, J Mazieres, F Le Tinier, Eric Dansin, François Thillays, Benjamin Besse, Pascal-Alexandre Thomas, Cécile Le Pechoux, Nicolas Girard
Annals of Oncology, 2021, 32, ⟨10.1016/j.annonc.2021.08.1986⟩
Article dans une revueAcute Pulmonary Embolism in Patients with and without COVID-19
Antonin Trimaille, Anais Curtiaud, Kensuke Matsushita, Benjamin Marchandot, Jean-Jacques von Hunolstein, Chisato Sato, Ian Leonard-Lorant, Laurent Sattler, Lelia Grunebaum, Mickaël Ohana, Patrick Ohlmann, Laurence Jesel-Morel, Olivier Morel
Journal of Clinical Medicine, 2021, 10 (10), pp.2045. ⟨10.3390/jcm10102045⟩
Article dans une revueAbstractIntroduction. Acute pulmonary embolism (APE) is a frequent condition in patients with COVID-19 and is associated with worse outcomes. Previous studies suggested an immunothrombosis instead of a thrombus embolism, but the precise mechanisms remain unknown. Objective. To assess the determinants and prognosis of APE during COVID-19. Methods. We retrospectively included all consecutive patients with APE confirmed by computed tomography pulmonary angiography hospitalized at Strasbourg University Hospital from 1 March to 31 May 2019 and 1 March to 31 May 2020. A comprehensive set of clinical, biological, and imaging data during hospitalization was collected. The primary outcome was transfer to the intensive care unit (ICU). Results. APE was diagnosed in 140 patients: 59 (42.1%) with COVID-19, and 81 (57.9%) without COVID-19. A 812% reduction of non-COVID-19 related APE was registered during the 2020 period. COVID-19 patients showed a higher simplified pulmonary embolism severity index (sPESI) score (1.15 ± 0.76 vs. 0.83 ± 0.83, p = 0.019) and were more frequently transferred to the ICU (45.8% vs. 6.2%, p < 0.001). No difference regarding the most proximal thrombus localization, Qanadli score (8.1 ± 6.9 vs. 9.0 ± 7.4, p = 0.45), the proportion of subsegmental (10.2% vs. 11.1%, p = 0.86), and segmental pulmonary embolism (35.6% vs. 24.7%, p = 0.16) was evidenced between COVID-19 and non-COVID-19 APE. In COVID-19 patients with subsegmental or segmental APE, thrombus was, in all cases (27/27 patients), localized in areas with COVID-19-related lung injuries. Marked inflammatory and prothrombotic biological markers were associated with COVID-19 APE. Conclusions. APE patients with COVID-19 have a particular clinico–radiological and biological profile and a dismal prognosis. Our results emphasize the preeminent role of inflammation and a prothrombotic state in these patients.
In vitro comparison of the mechanical behaviour of archwires after computer-assisted and conventional bracket positioning protocols
Delphine Wagner, Marion Strub, Maï-Linh Tran, Boris Piotrowski, Pascal Laheurte
International Orthodontics, 2021, 19 (3), pp.512-521. ⟨10.1016/j.ortho.2021.06.006⟩
Article dans une revueAbstractIntroduction: The mechanical properties of orthodontic archwires can be defined using experimental setups incorporating brackets that provide conditions closer to those encountered in vivo. We aimed to compare a methodology based on computer-aided design with the gold standard protocol, performed when brackets are engaged to a full-size archwire to test the behaviour of wires in this condition. Methods : Three models simulating a dental arch with an orthodontic fixed appliance (0.018-inch aesthetic conventional brackets) were designed. The brackets were positioned with a stainless steel full-size wire on the first two models, with different interbracket distances. The setup 3, based on a computer-assisted design, allowed individualized placement of each bracket. Mean forces recorded and standard deviation were compared for a 0.016 x 0.022-inch copper-nickel titanium wire deflected until 2 mm. Results : The interbracket distances do not cause a statistical difference in the average maximum force recorded (12.6 N and 11.4 N; P = 0.081) whereas the behaviour of the wires is affected. With setup 3, the recorded efforts (mean value: 8 N) are statistically lower than with setup 1 and 2 respectively (P = 0.018; P = 0.012). Conclusion : An individualization of the housings by CAD-CAM dedicated to each bracket optimizes their placement. In our test conditions, the mechanical behaviour of the wires is more influenced by the positioning methods of the brackets than by the value of the interbracket distance. In perspective, our innovative methodology can be extended to other types of brackets.
Respiratory follow‐up after hospitalization for COVID‐19: Who and when?
Marianne Riou, Christophe Marcot, Walid Oulehri, Irina Enache, Cristina Pistea, Eva Chatron, Aïssam Labani, Bernard Geny, Mickaël Ohana, Frederic de Blay de Gaix, Romain Kessler, Anne Charloux
European Journal of Clinical Investigation, 2021, 51 (8), ⟨10.1111/eci.13603⟩
Article dans une revueA case of an injured calcaneus secundarius in a professional soccer player
Sabrina Kepka, Marc Morel, Franck Gasnier, François Pietra, Nicolas Marjanovic, Pascal Zeller, Pascal Bilbault, Stephane Kremer, Guillaume Bierry
BMC Musculoskeletal Disorders, 2021, 22 (1), ⟨10.1186/s12891-021-04246-0⟩
Article dans une revueReply to :Aminotransferases disorders associated with venous thromboembolic events in patients infected with COVID-19
Amer Hamade, Bastien Woehl, Marjolaine Talbot, Naouel Bensalah, Pierre Michel, Golnaz Obringer, Michèle Lehn-Hogg, Nathalie Buschenrieder, Mahdi Issa, Jonathan Tousch, Dominique Stephan, Lucas Jambert
Annals of hepatology : official journal of the Mexican Association of Hepatology, 2021, 23, ⟨10.1016/j.aohep.2021.100334⟩
Article dans une revueQuality of life in patients with pulmonary embolism treated with edoxaban versus warfarin
Roisin Bavalia, Ingrid M Bistervels, Wim G Boersma, Isabelle Quere, Dominique Brisot, Nicolas Falvo, Dominique Stephan, Francis Couturaud, Sebastien Schellong, Jan Beyer-Westendorf, Karine Montaclair, Waleed Ghanima, Marjie ten Wolde, Michiel Coppens, Emile Ferrari, Olivier Sanchez, Patrick Carroll, Pierre-Marie Roy, Susan R Kahn, Karina Meijer, Simone Birocchi, Michael J Kovacs, Amanda Hugman, Hugo ten Cate, Hilde Wik, Gilles Pernod, Marie-Antoinette Sevestre-Pietri, Michael Grosso, Minggao Shi, Saskia Middeldorp, Yong Lin, Barbara A. Hutten, Peter Verhamme
Research and Practice in Thrombosis and Haemostasis, 2021, 5 (5), ⟨10.1002/rth2.12566⟩
Article dans une revueAbstractBackground: Long-term sequelae of acute pulmonary embolism (PE) include decreased quality of life (QoL). Evidence suggests that adequacy of initial anticoagulant treatment in the acute phase of venous thrombosis has a key impact on late post-thrombotic complications. We hypothesize that patients with acute PE treated with edoxaban for acute PE experience have improved QoL compared to those treated with warfarin. Methods: Patients with PE who participated in the Hokusai-VTE trial were contacted between June 2017 and September 2020 for a single long-term follow-up visit. Main outcomes were the generic and disease-specific QoL measured by the 36-Item Short Form Health Survey (SF-36) and Pulmonary Embolism Quality of Life questionnaire. Results: We included 251 patients from 26 centers in eight countries, of which 129 (51%) had been assigned to edoxaban and 122 (49%) to warfarin. Patient- and thrombus-specific characteristics were similar in both groups. Mean time since randomization in the Hokusai-VTE trial was 7.0 years (standard deviation, 1.0). No relevant or statistical differences were observed in the QoL for patients treated with edoxaban compared to patients treated with warfarin. The mean difference between patients treated with edoxaban and patients with PE treated with warfarin was 0.8 (95% confidence interval [CI]. -1.6 to 3.2) for the SF-36 summary mental score and 1.6 (95% CI, -0.9 to 4.1) for summary physical score. Conclusion: Our findings indicate that patients with an index PE treated with edoxaban or warfarin have a similar long-term QoL. Since our study was a follow-up study from a well-controlled clinical trial setting, future studies should be designed in a daily clinical practice setting. We suggest a longitudinal design for investigation of changes in QoL over time.
Performance comparison of anti-p504s (SP116) Rabbit Monoclonal Primary Antibody vs. Monoclonal Rabbit Anti-Human AMACR clone 13H4 when duplexed with VENTANA Basal Cell Cocktail (34 beta E12+p63) as a diagnostic aid for prostatic adenocarcinoma using immunohistochemistry
Veronique Lindner, Anne Waydelich, Chen Chun Chen, Carol Jones, Steven P Stratton
Virchows Archiv, 2021, 479 (2), pp.337-343. ⟨10.1007/s00428-021-03088-4⟩
Article dans une revueAbstractAlpha-methylacyl-coenzyme A-racemase (AMACR), also known as p504s, is overexpressed in prostatic adenocarcinoma and is frequently used in combination with basal cell markers to aid in diagnosing difficult prostate adenocarcinoma cases. In this retrospective method comparison study, we examined the sensitivity and specificity of the ready-to-use anti-p504s (SP116) Rabbit Monoclonal Primary Antibody compared to the monoclonal rabbit anti-human AMACR clone 13H4 in prostatic adenocarcinoma samples. De-identified prostatic adenocarcinoma tissue samples were stained with either the SP116 or 13H4 antibody clone in combination with the VENTANA Basal Cell Cocktail (34 beta E12+p63) and scored as positive or negative for prostatic adenocarcinoma. The scoring pathologist was blinded to the known historical diagnosis of each sample. The scoring pathologist correctly diagnosed each sample regardless of which p504s clone was used. Both assays using either clone were 100% concordant in their sensitivity and specificity. This study demonstrates that the ready-to-use anti-p504s (SP116) Rabbit Monoclonal Primary Antibody is equivalent to clone 13H4 concentrate when used according to package insert instructions in combination with the VENTANA Basal Cell Cocktail (34 beta E12+p63) to aid pathologists in the diagnosis of prostatic adenocarcinoma.
Hawthorn berry (crataegus songarica) causes endothelium-dependent relaxation of the porcine coronary artery: Role of Estrogen receptors
Waqas Younis, A. Alamgeer, Valerie Schini-Kerth, Muhammad Akmal Farooq, Musaad Althobaiti, Richard E. Roberts
Journal of Berry Research, 2021, 11 (2), pp.249-265. ⟨10.3233/JBR-200662⟩
Article dans une revueAbstractBACKGROUND: Fruits of Crataegus songarica are commonly used for the treatment of vascular insufficiency and heart problems. OBJECTIVE: Our aim was to determine the effect of C. songarica on vascular tone and to determine the mechanisms underlying the vasorelaxant properties. METHODS: Extracts of C. songarica were tested for vasodilator activity of porcine coronary artery after pre-contraction with the thromboxane mimetic U46619 in the presence or absence of inhibitors of intracellular signaling cascades. Reactive oxygen species were assessed by dihydroethidine staining and the level of eNOS and AKT phosphorylation was measured by immunohistochemical staining. RESULTS: Extracts of C. songarica berries produced endothelium dependent vasorelaxation, with most significant effect induced by aqueous fraction (AS-CS). This vasorelaxant effect of AS-CS was reduced by inhibition of nitric oxide pathways and inhibition of potassium channels. Inhibition of phosphatidylinositol 3- kinase and Src tyrosine kinase, as well as scavenging of reactive oxygen species, produced an attenuation of the relaxation response. Estrogen receptor antagonists tamoxifen and ICI 182,782) reduced the AS-CS mediated vasorelaxation. AS-CS also stimulated the endothelial formation of ROS and phosphorylation of Akt and eNOS. CONCLUSION: The data indicated that C. songarica produces an endothelium-dependent vasorelaxation, which is partly dependent upon estrogen receptors, and sensitive to inhibition of ROS/Src/PI3K/NO pathways.
State of the Art in Robot-Assisted Eye Surgery
Tristan Bourcier, Léa Dormegny, Arnaud Sauer, Mathieu Nardin, Pierre-Henri Becmeur, Jimmy Chammas, David Gaucher, Laurent Ballonzoli, Claude Speeg, Philippe Liverneaux, Michel Vix, Jacques Marescaux, Didier Mutter
Klinische Monatsblätter für Augenheilkunde, 2021, 238 (12), ⟨10.1055/a-1562-2350⟩
Article dans une revueIncreased susceptibility to SARS-CoV-2 infection in patients with reduced left ventricular ejection fraction
Kensuke Matsushita, Benjamin Marchandot, Adrien Carmona, Anais Curtiaud, Anis El Idrissi, Antonin Trimaille, Marion Kibler, Thomas Cardi, Joe Heger, Sebastien Hess, Antje Reydel, Laurence Jesel, Patrick Ohlmann, Olivier Morel
ESC Heart Failure, 2021, 8 (1), pp.380-389. ⟨10.1002/ehf2.13083⟩
Article dans une revueAbstractAIMS: Cardiovascular disease has been recognized as a major determinant of coronavirus disease 2019 (COVID-19) vulnerability and severity. Angiotensin-converting enzyme (ACE) 2 is a functional receptor for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and is up-regulated in patients with heart failure. We sought to examine the potential association between reduced left ventricular ejection fraction (LVEF) and the susceptibility to SARS-CoV-2 infection. METHODS AND RESULTS: Of the 1162 patients with acute coronary syndrome (ACS) who underwent percutaneous coronary intervention between February 2014 and October 2018, we enrolled 889 patients with available clinical follow-up data. Follow-up was conducted by telephone interviews 1 month after the start of the French lockdown which began on 17 March 2020. Patients were divided into two groups according to LVEF <40% (reduced LVEF) (n = 91) or ≥40% (moderately reduced + preserved LVEF) (n = 798). The incidence of COVID-19-related hospitalization or death was significantly higher in the reduced LVEF group as compared with the moderately reduced + preserved LVEF group (9% vs. 1%, P < 0.001). No association was found between discontinuation of ACE-inhibitor or angiotensin-receptor blockers and COVID-19 test positivity. By multivariate logistic regression analysis, reduced LVEF was an independent predictor of COVID-19 hospitalization or death (odds ratio: 6.91, 95% confidence interval: 2.60 to 18.35, P < 0.001). CONCLUSIONS: In a large cohort of patients with previous ACS, reduced LVEF was associated with increased susceptibility to COVID-19. Aggressive COVID-19 testing and therapeutic strategies may be considered for patient with impaired heart function.
Paediatric multisystem inflammatory syndrome associated with COVID-19: filling the gap between myocarditis and Kawasaki?
Jeanne Bordet, Stephanie Perrier, Catherine Olexa, Anne-Cécile Gerout, Philippe Billaud, Laurent Bonnemains
European Journal of Pediatrics, 2021, ⟨10.1007/s00431-020-03807-0⟩
Article dans une revueProcoagulant microparticles: a possible link between vaccine-induced immune thrombocytopenia (VITT) and cerebral sinus venous thrombosis
Benjamin Marchandot, Adrien Carmona, Antonin Trimaille, Anais Curtiaud, Olivier Morel
Journal of Thrombosis and Thrombolysis, 2021, 52 (3), pp.689-691. ⟨10.1007/s11239-021-02505-4⟩
Article dans une revueOptimization of connective tissue graft length by graft splitting: A case series
Rodrigo Martín-Cabezas, Sonia Deschamps-Lenhardt, Olivier Huck
Clinical advances in periodontics, 2021, 11 (3), pp.165-170. ⟨10.1002/cap.10175⟩
Article dans une revueAbstractIntroduction: The aim of this case series was to assess the feasibility of a graft modification to increase its length when treating multiple adjacent gingival recessions with only one harvesting site at the palate and respecting the safety zone. Case series: Nineteen recessions were treated in four consecutive patients with a modified coronally advanced tunnel and a modified connective tissue graft. An 8-mm height connective tissue graft was harvested by the single-incision technique, the graft was split longitudinally, achieving 4-mm height and double the length. Changes in recession depth, keratinized tissue height, mean and complete root coverage, and esthetic score were analyzed at 6 months. The technique allows to harvest a connective tissue graft up to 58-mm length with a single palatal site. Complete root coverage was achieved in 15/19 recessions (78.94%), with a mean root coverage of 82.90%. The mean recession depth was reduced by 1.31 mm and the keratinized tissue increased by 0.69 mm. The esthetic outcome score was 9.26/10. Conclusion: This graft modification technique allows increasing significantly the graft length up to 58 mm without any modification of the surgical harvesting procedure. Therefore, it can be suggested to reduce the morbidity.
Electrocardiographic Strain Pattern Is a Major Determinant of Rehospitalization for Heart Failure After Transcatheter Aortic Valve Replacement
Joé Heger, Antonin Trimaille, Marion Kibler, Benjamin Marchandot, Marilou Peillex, Adrien Carmona, Kensuke Matsushita, Annie Trinh, Antje Reydel, Floriane Zeyons, Hélène Petit-Eisenmann, Laurence Jesel, Patrick Ohlmann, Olivier Morel
Journal of the American Heart Association, 2021, 10 (3), pp.e014481. ⟨10.1161/JAHA.119.014481⟩
Article dans une revueAbstractBackground Electrocardiographic strain pattern (ESP) has recently been associated with increased adverse outcome in aortic stenosis and after surgical aortic valve replacement. Our study sought to determine the impact and incremental value of ESP pattern in predicting adverse outcome after transcatheter aortic valve replacement. Methods and Results A total of 585 patients with severe aortic stenosis (mean age, 83±7 years; men, 39.8%) were enrolled for transcatheter aortic valve replacement from November 2012 to May 2018. ESP was defined as ≥1‐mm concave down‐sloping ST‐segment depression and asymmetrical T‐wave inversion in the lateral leads. The primary end points of the study were all‐cause mortality, rehospitalization for heart failure, myocardial infarction, and stroke. A total of 178 (30.4%) patients were excluded because of left bundle‐branch block (n=103) or right bundle‐branch block (n=75). Among the 407 remaining patients, 106 had ESP (26.04%). At a median follow‐up of 20.00 months (11.70–29.42 months), no impact of electric strain on overall and cardiac death could be established. By contrast, incidence of rehospitalization for heart failure was significantly higher (33/106 [31.1%] versus 33/301 [11%]; P <0.001) in patients with ESP. By multivariate analyses, ESP remained a strong predictor of rehospitalization for heart failure (hazard ratio, 2.75 [95% CI, 1.61–4.67]; P <0.001). Conclusions In patients with aortic stenosis who were eligible for transcatheter aortic valve replacement, ESP is frequent and associated with an increased risk of postinterventional heart failure regardless of preoperative left ventricular hypertrophy. ESP represents an easy, objective, reliable, and low‐cost tool to identify patients who may benefit from intensified postinterventional follow‐up.
Density of surface charge is a more predictive factor of the toxicity of cationic carbon nanoparticles than zeta potential
Maud Weiss, Jiahui Fan, Mickaël Claudel, Thomas Sonntag, Pascal Didier, Carole Ronzani, Luc Lebeau, Francoise Pons
Journal of Nanobiotechnology, 2021, 19 (1), pp.5. ⟨10.1186/s12951-020-00747-7⟩
Article dans une revueAbstractBackground: A positive surface charge has been largely associated with nanoparticle (NP) toxicity. However, by screening a carbon NP library in macrophages, we found that a cationic charge does not systematically translate into toxicity. To get deeper insight into this, we carried out a comprehensive study on 5 cationic carbon NPs (NP2 to NP6) exhibiting a similar zeta (ζ) potential value (from + 20.6 to + 26.9 mV) but displaying an increasing surface charge density (electrokinetic charge, Qek from 0.23 to 4.39 µmol/g). An anionic and non-cytotoxic NP (NP1, ζ-potential = − 38.5 mV) was used as control. Results: The 5 cationic NPs induced high (NP6 and NP5, Qek of 2.95 and 4.39 µmol/g, respectively), little (NP3 and NP4, Qek of 0.78 and 1.35 µmol/g, respectively) or no (NP2, Qek of 0.23 µmol/g) viability loss in THP-1-derived macrophages exposed for 24 h to escalating NP dose (3 to 200 µg/mL). A similar toxicity trend was observed in airway epithelial cells (A549 and Calu-3), with less viability loss than in THP-1 cells. NP3, NP5 and NP6 were taken up by THP-1 cells at 4 h, whereas NP1, NP2 and NP4 were not. Among the 6 NPs, only NP5 and NP6 with the highest surface charge density induced significant oxidative stress, IL-8 release, mitochondrial dysfunction and loss in lysosomal integrity in THP-1 cells. As well, in mice, NP5 and NP6 only induced airway inflammation. NP5 also increased allergen-induced immune response, airway inflammation and mucus production. Conclusions: Thus, this study clearly reveals that the surface charge density of a cationic carbon NP rather than the absolute value of its ζ-potential is a relevant descriptor of its in vitro and in vivo toxicity
Akkermansia muciniphila and Its Pili-Like Protein Amuc_1100 Modulate Macrophage Polarization in Experimental Periodontitis
Hannah Mulhall, Jeanne M Dichiara, Matthew Deragon, Radha Iyer, Olivier Huck, Salomon Amar
Infection and Immunity, 2021, 89 (1), pp.e00500-20. ⟨10.1128/IAI.00500-20⟩
Article dans une revueAbstractPeriodontitis is a chronic inflammatory disease triggered by dysbiosis of the oral microbiome. Porphyromonas gingivalis is strongly implicated in periodontal inflammation, gingival tissue destruction, and alveolar bone loss through sustained exacerbation of the host response. Recently, the use of other bacterial species, such as Akkermansia muciniphila, has been suggested to counteract inflammation elicited by P. gingivalis. In this study, the effects of A. muciniphila and its pili-like protein Amuc_1100 on macrophage polarization during P. gingivalis infection were evaluated in a murine model of experimental periodontitis. Mice were gavaged with P. gingivalis alone or in combination with A. muciniphila or Amuc_1100 for 6 weeks. Morphometric analysis demonstrated that the addition of A. muciniphila or Amuc_ 1100 significantly reduced P. gingivalis-induced alveolar bone loss. This decreased bone loss was associated with a proresolutive phenotype (M2) of macrophages isolated from submandibular lymph nodes as observed by flow cytometry. Furthermore, the expression of interleukin 10 (IL-10) at the RNA and protein levels was significantly increased in the gingival tissues of the mice and in macrophages exposed to A. muciniphila or Amuc_1100, confirming their anti-inflammatory properties. This study demonstrates the putative therapeutic interest of the administration of A. muciniphila or Amuc_1100 in the management of periodontitis through their antiinflammatory properties.
An Evaluation of Two Systems for the Management of the Microbiological Quality of Water in Dental Unit Waterlines: Hygowater® and IGN Calbénium®
Damien Offner, Anne-Marie Musset
International Journal of Environmental Research and Public Health, 2021, 18 (10), pp.5477. ⟨10.3390/ijerph18105477⟩
Article dans une revueAbstractWater in dental unit waterlines (DUWL) represents a risk for vulnerable patients if its microbiological quality is not controlled. The aim of this prospective study was to evaluate two systems for its management under real conditions: Hygowater® and IGN Calbenium®. Samples of the output water of DUWL were obtained for 5 previously contaminated units connected to Hygowater®, and 5 non-contaminated units connected to IGN Calbenium®, which was already effective for more than 1 year, as a control group. Samples were regularly collected up to 6 months after the implementation of Hygowater®, and were then cultured and analyzed. With IGN Calbenium®, except for a technical problem and a sample result in one unit at 6 months (Heterotrophic Plate Count (HPC) at 37 °C of 66 colony forming units (cfu)/mL), the results showed an absence of contamination. Hygowater® took a couple of weeks to be effective on initially contaminated DUWL (over 200 cfu/mL for all the units), then showed its efficacy for 2 months (HPC at 37 °C with a mean of 40.2 ufc/mL, and HPC at 22 °C with a mean of 0.2 ufc/mL). At 6 months, results were satisfactory for HPC at 22 °C (mean of 12 ufc/mL), but HPC at 37 °C gave non-satisfactory results for 4 of the 5 units (mean of 92.2 ufc/mL). Both systems have an effect on the microbiological quality of DUWL. IGN Calbenium® appears to be more reliable on a long-term basis.
Does functional evaluation before lung cancer surgery need reappraisal?
Pierre-Emmanuel Falcoz, Anne Olland, Anne Charloux
European Journal of Cardio-Thoracic Surgery, 2021, 60 (1), pp.3-6. ⟨10.1093/ejcts/ezab273⟩
Article dans une revueAbstractNo abstract available
Thermal, structural and morphological characterization of dental polymers for clinical applications
Merve Benli, Beril Eker Gumus, Yusuf Kahraman, Ozlem Yagci, Duygu Erdogan, Olivier Huck, Mutlu Ozcan
Journal of Prosthodontic Research, 2021, 65 (2), pp.176-185. ⟨10.2186/jpr.JPOR_2019_534⟩
Article dans une revueAbstractPurpose: Polymers are used in dentistry on a daily basis due to their mechanical, functional and aesthetic properties. However, such biomaterials are subject to deterioration in the oral environment. Thus, this study aimed to evaluate the structural properties of live commonly used dental polymers to determine their best clinical indications. Methods: Four hundred-fitly samples of five dental polymers (polyethylenterephthalat - glycol modified (PG), polymethyl methacrylate (PA), ethylene vinyl acetate(E), polycarbonate (PC), polyetheretherketone (PK) were prepared to investigate their thermal, structural and chemical characteristics using energy dispersive spectroscopy (EDS), Fourier transform infrared analysis(FTIR), scanning electron microscopy (SEM), differential scanning calorimetry(DSC), thermogravimetric analysis(TGA), X-ray difTraction(XRD), and Shore D hardness test. Data were analyzed using one-way ANOVA, Tukey's HSD, and Levene's tests (alpha=0.05). Results: PK (87.2) and PA (82.4) displayed the highest hardness values and smooth surfaces, as observed with SEM (p<0.001). Silica was detected in PK, PA. and E by EDS and XRD. The highest glass transition temperature was recorded for PC (145.00 +/- 2.00 degrees C) and PK (143.00 +/- 1.87 degrees C), while the lowest value was measured for E (50.00 +/- 2.12 degrees C)(p<0.001). The highest mass loss was detected for PG (91.40 +/- 1.40%) by TGA. Conclusions: PA and PK polymers can be used for stress-containing treatments due to their mechanical properties. These two materials are also advantageous in terms of plaque accumulation as these polymers reveal smoother surfaces than other groups. Insufficient physical and thermal properties require the use of F with caution and only in limited clinical indications.
Histopathological features in fatal COVID-19 acute respiratory distress syndrome
Hamid Merdji, Sylvain Mayeur, Maleka Schenck, Walid Oulehri, Raphaël Clere-Jehl, Sibylle Cunat, Jean-Etienne Herbrecht, Ralf Janssen-Langenstein, Alina Nicolae, Julie Helms, Ferhat Meziani, Marie Pierrette Chenard
Medicina Intensiva, 2021, 45 (5), pp.261--270. ⟨10.1016/j.medin.2021.02.007⟩
Article dans une revueNTPDase1 Modulates Smooth Muscle Contraction in Mice Bladder by Regulating Nucleotide Receptor Activation Distinctly in Male and Female
Romuald Brice Babou Kammoe, Gilles Kauffenstein, Julie Pelletier, Bernard Robaye, Jean Sévigny
Biomolecules, 2021, 11 (2), pp.147. ⟨10.3390/biom11020147⟩
Article dans une revueAbstractNucleotides released by smooth muscle cells (SMCs) and by innervating nerve terminals activate specific P2 receptors and modulate bladder contraction. We hypothesized that cell surface enzymes regulate SMC contraction in mice bladder by controlling the concentration of nucleotides. We showed by immunohistochemistry, enzymatic histochemistry, and biochemical activities that nucleoside triphosphate diphosphohydrolase-1 (NTPDase1) and ecto-5-nucleotidase were the major ectonucleotidases expressed by SMCs in the bladder. RT-qPCR revealed that, among the nucleotide receptors, there was higher expression of P2X1, P2Y 1 , and P2Y 6 receptors. Ex vivo, nucleotides induced a more potent contraction of bladder strips isolated from NTPDase1 deficient (Entpd1 −/−) mice compared to wild type controls. The strongest responses were obtained with uridine 5triphosphate (UTP) and uridine 5-diphosphate (UDP), suggesting the involvement of P2Y 6 receptors, which was confirmed with P2ry6 −/− bladder strips. Interestingly, this response was reduced in female bladders. Our results also suggest the participation of P2X1, P2Y 2 and/or P2Y 4 , and P2Y 12 in these contractions. A reduced response to the thromboxane analogue U46619 was also observed in wild type, Entpd1 −/− , and P2ry6 −/− female bladders showing another difference due to sex. In summary, NTPDase1 modulates the activation of nucleotide receptors in mouse bladder SMCs, and contractions induced by P2Y 6 receptor activation were weaker in female bladders.
Water-in-Oil Nano-Emulsions Prepared by Spontaneous Emulsification: New Insights on the Formulation Process
Salman Akram, Nicolas Anton, Ziad Omran, Thierry Vandamme
Pharmaceutics, 2021, 13 (7), ⟨10.3390/pharmaceutics13071030⟩
Article dans une revueAbstractNano-emulsions consist of stable suspensions of nano-scaled droplets that have huge loading capacities and are formulated with safe compounds. For these reasons, a large number of studies have described the potential uses of nano-emulsions, focusing on various aspects such as formulation processes, loading capabilities, and surface modifications. These studies typically concern direct nano-emulsions (i.e., oil-in-water), whereas studies on reverse nano-emulsions (i.e., water-in-oil) remain anecdotal. However, reverse nano-emulsion technology is very promising (e.g., as an alternative to liposome technology) for the development of drug delivery systems that encapsulate hydrophilic compounds within double droplets. The spontaneous emulsification process has the added advantages of optimization of the energetic yield, potential for industrial scale-up, improved loading capabilities, and preservation of fragile compounds targeted for encapsulation. In this study, we propose a detailed investigation of the processes and formulation parameters involved in the spontaneous nano-emulsification that produces water-in-oil nano-emulsions. The following details were addressed: (i) the order of mixing of the different compounds (method A and method B), (ii) mixing rates, (iii) amount of surfactants, (iv) type and mixture of surfactants, (v) amount of dispersed phase, and (vi) influence of the nature of the oil. The results emphasized the effects of the formulation parameters (e.g., the volume fraction of the dispersed phase, nature or concentration of surfactant, or nature of the oil) on the nature and properties of the nano-emulsions formed.
Development of prohibitin ligands against osteoporosis
Redouane Tabti, François Lamoureux, Céline Charrier, Benjamin Ory, Dominique Heymann, Embarek Bentouhami, Laurent Désaubry
European Journal of Medicinal Chemistry, 2021, 210, pp.112961. ⟨10.1016/j.ejmech.2020.112961⟩
Article dans une revueAbstractCurrent therapeutic approaches to osteoporosis display some potential adverse effects and a limited efficacy on non-vertebral fracture reduction. Some sulfonylamidines targeting the scaffold proteins prohibitins-1 and 2 (PHB1/2) have been showed to inhibit the formation of osteoclasts in charge of bone resorption. Herein, we report the development of a second generation of anti-osteoclastic PHB ligands. The most potent compound, IN45, showed 88 % inhibition at the low concentration of 5 μM, indicates that it might serve as a basis for the development of new antiosteoporotic drugs.
Microparticles in COVID-19 as a link between lung injury extension and thrombosis
Olivier Morel, Benjamin Marchandot, Laurence Jesel-Morel, Laurent Sattler, Antonin Trimaille, Anais Curtiaud, Mickaël Ohana, Samira Fafi-Kremer, Valerie Schini-Kerth, Lelia Grunebaum, Jean-Marie Freyssinet
ERJ Open Research, 2021, 7 (2), ⟨10.1183/23120541.00954-2020⟩
Article dans une revueEffective Orifice Area of Balloon-Expandable and Self-Expandable Transcatheter Aortic Valve Prostheses: An Echo Doppler Comparative Study
Mohamad Kanso, Marion Kibler, Sebastien Hess, Jérome Rischner, Philoktimon Plastaras, Michel Kindo, Minh Hoang, Fabien de Poli, Pierre Leddet, Hélène Petit, Floriane Zeyons, Annie Trinh, Kensuke Matsushita, Olivier Morel, Patrick Ohlmann
Journal of Clinical Medicine, 2021, 10 (2), pp.186. ⟨10.3390/jcm10020186⟩
Article dans une revueAbstractPublished data on the size-specific effective orifice area (EOA) of transcatheter heart valves (THVs) remain scarce. Here, we sought to investigate the intra-individual changes in EOA and mean transvalvular aortic gradient (MG) of the Sapien 3 (S3), CoreValve (CV), and Evolut R (EVR) prostheses both at short-term and at 1-year follow-up. The study sample consisted of 260 consecutive patients with severe aortic stenosis who underwent transcatheter aortic valve implantation (TAVI). EOAs and MGs were measured with Doppler echocardiography for the following prostheses: S3 23 mm (n = 74; 28.5%), S3 26 mm (n = 67; 25.8%), S3 29 mm (n = 20; 7.7%), CV 23 mm (n = 2; 0.8%), CV 26 mm (n = 15; 5.8%), CV 29 mm (n = 24; 9.2%), CV 31 mm (n = 9; 3.5%), EVR 26 mm (n = 22; 8.5%), and EVR 29 mm (n = 27; 10.4%). Values were obtained at discharge, 1 month, 6 months, and 1 year from implantation. At discharge, EOAs were larger and MGs lower for larger-size prostheses, regardless of being balloon-expandable or self-expandable. In patients with small aortic annulus size, the hemodynamic performances of CV and EVR prostheses were superior to those of S3. However, we did not observe significant differences in terms of all-cause mortality according to THV type or size. Both balloon-expandable and self-expandable new-generation THVs show excellent hemodynamic performances without evidence of very early valve degeneration.
The Reality of Lung Cancer Paradox: The Impact of Body Mass Index on Long-Term Survival of Resected Lung Cancer. A French Nationwide Analysis from the Epithor Database
Marco Alifano, Elisa Daffré, Antonio Iannelli, Laurent Brouchet, Pierre Emmanuel Falcoz, Françoise Le Pimpec Barthes, Alain Bernard, Pierre Benoit Pages, Pascal Alexandre Thomas, Marcel Dahan, Raphaël Porcher
Cancers, 2021, 13 (18), pp.4574. ⟨10.3390/cancers13184574⟩
Article dans une revueAbstractObesity could have a protective effect in patients with lung cancer. We assessed the prognostic role of preoperative BMI on survival in patients who underwent lung resection for NSCLC. A total of 54,631 consecutive patients with resectable lung cancer within a 15-year period were extracted from Epithor (the French Society of Thoracic and Cardiovascular Surgery database). Patient subgroups were defined according to body mass index (BMI): underweight (BMI < 18.5 kg/m2), normal weight (18.5 ≤ BMI < 25 kg/m2), overweight (25 ≤ BMI < 30 kg/m2), and obese (BMI ≥ 30 kg/m2). Underweight was associated with lower survival (unadjusted HRs 1.24 (1.16–1.33)) compared to normal weight, whereas overweight and obesity were associated with improved survival (0.95 (0.92–0.98) and 0.88 (0.84–0.92), respectively). The impact of BMI was confirmed when stratifying for sex or Charlson comorbidities index (CCI). Among patients with obesity, a higher BMI was associated with improved survival. After adjusting for period of study, age, sex, WHO performance status, CCI, side of tumor, extent of resection, histologic type, and stage of disease, the HRs for underweight, overweight, and obesity were 1.51 (1.41–1.63), 0.84 (0.81–0.87), and 0.80 (0.76–0.84), respectively. BMI is a strong and independent predictor of survival in patients undergoing surgery for NSCLC.
COVID-19: what the clinician should know about post-mortem findings
Danny Jonigk, Bruno Markl, Julie Helms
Intensive Care Medicine, 2021, 47 (1), pp.86-89. ⟨10.1007/s00134-020-06302-0⟩
Article dans une revueAbstractNo abstract available
Normal chest CT in 1091 symptomatic patients with confirmed Covid-19: frequency, characteristics and outcome
Ian Leonard-Lorant, François Severac, Pascal Bilbault, Joris Muller, Pierre Leyendecker, Catherine Roy, Mickaël Ohana
European Radiology, 2021, 31 (7), pp.5172-5177. ⟨10.1007/s00330-020-07593-z⟩
Article dans une revueAbstractObjective Frequency of normal chest CT in symptomatic COVID-19 patients as well as the outcome of these patients remains unknown. The objectives of this work were to assess the incidence of initially normal chest CT in a cohort of consecutive confirmed COVID-19 patients with respiratory symptoms and to compare their clinical characteristics and their outcome to matched patients with typical COVID-19 lesions at initial CT. Methods From March 6(th) to April 22(nd), all consecutive adult patients referred to the COVID-19 clinic of our Emergency Department were retrospectively analyzed. Each patient with a positive SARS-CoV-2 RT-PCR and a normal initial chest CT after second reading was 1:1 matched based on sex, age and date of CT acquisition to a patient with positive RT-PCR and initial chest CT with typical COVID-19 lesions. Clinical data, laboratory results and outcomes (major being mechanical ventilation and/or death) were compared between both groups, using Wilcoxon signed-rank test, McNemar's chi-squared test and/or exact McNemar's test where appropriate. Results Fifty-seven chest CT out of 1091 (5.2%, 95% CI 4.0-6.7) in symptomatic patients with positive RT-PCR were normal, with a median onset of symptoms of 4.5 days (IQR [1.25-10.25]). After a median follow-up of 43 days, death and/or mechanical ventilation occurred in 3 patients (5.3%) in the study group, versus 11 (19.3%) in the control group (p = 0.011). Conclusions Normal initial chest CT occurred in 5.2% of symptomatic confirmed COVID-19 cases in our cohort. While better than those with abnormal chest CT, outcome was not entirely benign with 5.3% death and/or mechanical ventilation.
Association between periodontitis treatment outcomes and peri-implantitis: A long-term retrospective cohort study
Panagiota Vagia, Ioanna Papalou, Alexandre Burgy, Henri Tenenbaum, Olivier Huck, Jean-Luc Davideau
Clinical Oral Implants Research, 2021, 32 (6), pp.721-731. ⟨10.1111/clr.13741⟩
Article dans une revueAbstractObjectives Retrospectively evaluate the association of periodontal treatment outcomes and the prevalence of peri-implant diseases around tissue-level implants. Materials and Methods Eighty-six patients with 260 tissue-level implants attending supporting periodontal and implant therapy for more than 3 years were evaluated. Clinical and radiographic periodontal and implant data were recorded at initial examination (T0), before implant placement (T1) and at final re-examination (T2). Two definitions of peri-implantitis severity, PIBE and PIKA, were used corresponding to the presence of periodontal pocket >= 5 mm or >= 6 mm with bleeding on probing or suppuration and radiographic signs of a bone level >= 2 mm, or >= 3 mm during implant follow-up, respectively. Analyses were performed at patient level. Results The mean implant follow-up per patient was 9.4 years and 38.0% of patients had implant for at least 10 years. Two implants were lost due to peri-implantitis. The prevalence of patients with PIKA and PIBE was 15.1% and 12.8%, respectively. Residual periodontal pockets, clinical attachment loss and bone loss/age at T2 were more pronounced in patients with PIKA and PIBE. Cox regression analysis adjusted with the number of implants per patient showed that residual pockets at T1 were independently associated with PIKA and PIBE. Initial diagnosis of severe periodontitis was associated with PIBE incidence. Conclusions The present study showed that periodontal conditions before implant placement are a risk indicator for peri-implantitis incidence. During implant follow-up, the severity of periodontal status appeared to be a reliable indicator of patient susceptibility to peri-implantitis.
Cleaning of dental handpieces and associated parameters: Internal and external cleaning, drying and rotation
Damien Offner, Julie Scholler, Anne-Marie Musset
American Journal of Dentistry, 2021, 34 (3), pp.137-142
Article dans une revueAbstractPURPOSE: To evaluate the cleaning of dental handpieces and its associated parameters, internal, external cleaning and drying, and rotation, for two washer-disinfectors: Teon+ by W&H, and a dental rack for WD290 by Belimed. METHODS: An original method was developed with resin flags on dental burs to assess the inner rotation during the cleaning cycle. Concerning the cleaning and drying evaluation, three groups (9, 24 and 22 handpieces) were used in different conditions: soiled with Soil Test, soiled with heparinized blood, used in real conditions after a dental procedure, and clean (as control). Cycles were performed with the two washer-disinfectors, followed by a visual evaluation and a biuret reaction test. RESULTS: The method we developed was effective to assess the inner rotation of handpieces. The internal cleaning was successful for real conditions and control handpieces, but unsuccessful for all the artificially soiled handpieces except one. All the handpieces showed substantial humidity on their inner surfaces after cleaning. The internal cleaning of handpieces and its evaluation are both difficult to perform. A questioning about the relevance of some tests required in the ISO 15883 about handpieces requires further study. Cleaning devices and their parameters should be optimized to offer better cleaning skills, and testing-tools should be developed and validated to easily assess their performances. CLINICAL SIGNIFICANCE: Easy-to-use testing tools should be developed and validated, and dental handpiece cleaning tests should be redefined to fit with the reality of practices. According to the actual performance of cleaning, and even though sterilization will largely contribute to the reduction of the infectious risk of internal handpiece structures, it is unclear whether cleaning procedures can ensure totally safe practices.
Anti-inflammatory Activity of the Protein Z-Dependent Protease Inhibitor
Mahita Razanakolona, Frédéric Adam, Elsa Bianchini, François Saller, Allan De Carvalho, Jean-Luc Diehl, Cécile V. Denis, Ferhat Meziani, Delphine Borgel, Julie Helms, Marc Vasse
TH Open : Companion Journal To Thrombosis and Haemostasis, 2021, 5 (2), pp.220-229. ⟨10.1055/s-0041-1730037⟩
Article dans une revueAbstractThe protein Z (PZ)-dependent plasma protease inhibitor (ZPI) is a glycoprotein that inhibits factor XIa and, in the presence of PZ, FXa. Recently, ZPI has been shown to be an acute-phase protein (APP). As usually APPs downregulate the harmful effects of inflammation, we tested whether ZPI could modulate the increase of cytokines observed in inflammatory states. We observed that recombinant human ZPI (rhZPI) significantly decreases the levels of interleukin (IL)-1, IL-6, and tumor necrosis factor- α (TNF-α) induced by lipopolysaccharide (LPS) in a whole blood model. This inhibitory effect was unaffected by the presence of PZ or heparin. A ZPI mutant within the reactive loop center ZPI (Y387A), lacking anticoagulant activity, still had an anti-inflammatory activity. Surprisingly, rhZPI did not inhibit the synthesis of IL-6 or TNF-α when purified monocytes were stimulated by LPS, whereas the inhibitory effect was evidenced when lymphocytes were added to monocytes. The requirement of lymphocytes could be due to the synthesis of CCL5 (RANTES), a chemokine mainly produced by activated lymphocytes which is induced by rhZPI, and which can reduce the production of proinflammatory cytokines in whole blood. Lastly, we observed that the intraperitoneal injection of rhZPI significantly decreased LPS-induced IL-6 and TNF-α production in mouse plasma.
Response to letter to the editor: "Akkermansia muciniphila reduces Porphyromonas gingivalis induced inflammation and periodontal bone destruction
Olivier Huck, Hannah Mulhall, George Rubin, Zev Kizelnik, Radha Iyer, John D Perpich, Nasreen Haque, Patrice D Cani, Willem M de Vos, Salomon Amar
Journal of Clinical Periodontology, 2021, 48 (11), pp.1493-1494. ⟨10.1111/jcpe.13539⟩
Article dans une revueOral Health Implications of SARS-CoV-2/COVID-19: A Systematic Review
Maria Vilar Doceda, Marianna Gavriiloglou, Catherine Petit, Olivier Huck
Oral Health and Preventive Dentistry, 2021, 20, ⟨10.3290/j.ohpd.b2960801⟩
Article dans une revueAbstractPurposes: The aim of this sytematic review was to evaluate the potential association of COVID-19 infection with oral health.<p>Materials and Methods: Screening in different databases (PubMed/MEDLINE, Google Scholar, and Embase databases) was performed to identify relevant articles, focusing on the oral health of patients with COVID-19, and published up to November 2021. 5194 articles were identified, and 29 fulfilled the inclusion criteria.</p><p>Results: Patients presenting more severe periodontal or dental diseases were at an increased risk of developing COVID-19 complications and being admitted to intensive care units. According to the included articles, U-shaped lingual papillitis and aphthous-like ulcers on the tongue are the most frequent lesions assessed in the oral cavity of COVID-19 patients, while xerostomia seems to be an early COVID-19 diagnostic symptom. Apart from the presence of the virus, the global lockdown had a detrimental impact on oral health. The occurrence of dental emergencies was augmented during this time due to the postponement of numerous non-emergency dental procedures.</p> <div>Conclusions:<p>The presence of SARS-CoV-2 in periodontal tissues and salivary fractions may explain the presence of oral lesions during the infection. However, the virus's direct or indirect effect on oral mucosa is unclear. It is important to consider that these manifestations might be attributed to underlying comorbidities, or co-existing or subsequent lesions produced by local irritants.</p></div>
Impact of residual inflammation on myocardial recovery and cardiovascular outcome in Takotsubo patients
Lucie Lachmet-Thébaud, Benjamin Marchandot, Kensuke Matsushita, Chisato Sato, Charlotte Dagrenat, Stephane Greciano, Fabien de Poli, Pierre Leddet, Marilou Peillex, Sébastien Hess, Adrien Carmona, Charline Jimenez, Joe Heger, Antje Reydel, Patrick Ohlmann, Laurence Jesel, Olivier Morel
ESC Heart Failure, 2021, 8 (1), pp.259-269. ⟨10.1002/ehf2.12945⟩
Article dans une revueAbstractAIMS: Recent insights have emphasized the importance of myocardial and systemic inflammation in Takotsubo syndrome (TTS). In a large registry of unselected patients, we sought to evaluate whether residual high inflammatory response (RHIR) could impact cardiovascular outcome after TTS. METHODS AND RESULTS: Patients with TTS were retrospectively included between 2008 and 2018 in three general hospitals. Three hundred eighty-five patients with TTS were split into three subgroups, according to tertiles of C-reactive protein (CRP) levels at discharge (CRP <5.2 mg/L, CRP range 5.2 to 19 mg/L, and CRP >19 mg/L). The primary endpoint was the impact of RHIR, defined as CRP >19 mg/L at discharge, on cardiac death or hospitalization for heart failure. Follow up was obtained in 382 patients (99%) after a median of 747 days. RHIR patients were more likely to have a history of cancer or a physical trigger. Left ventricular ejection fraction (LVEF) at admission and at discharge were comparable between groups. By contrast, RHIR was associated with lower LVEF at follow up (61.7% vs. 60.7% vs. 57.9%; P = 0.004) and increased cardiac late mortality (0% vs. 0% vs. 10%; P = 0.001). By multivariate Cox regression analysis, RHIR was an independent predictor of cardiac death or hospitalization for heart failure (hazard ratio: 1.87; 95% confidence interval: 1.08 to 3.25; P = 0.025). CONCLUSIONS: Residual high inflammatory response was associated with impaired LVEF at follow up and was evidenced as an independent factor of cardiovascular events. All together, these findings underline RHIR patients as a high-risk subgroup, to target in future clinical trials with specific therapies to attenuate RHIR.
Ultrabright Green-Emitting Nanoemulsions Based on Natural Lipids-BODIPY Conjugates
Xinyue Wang, Sophie Bou, Andrey S Klymchenko, Nicolas Anton, Mayeul Collot
Nanomaterials, 2021, 11 (3), pp.826. ⟨10.3390/nano11030826⟩
Article dans une revueAbstractNanoemulsions (NEs) are water-dispersed oil droplets that constitute stealth biocompatible nanomaterials. NEs can reach an impressive degree of fluorescent brightness owing to their oily core that can encapsulate a large number of fluorophores on the condition the latter are sufficiently hydrophobic and oil-soluble. BODIPYs are among the brightest green emitting fluorophores and as neutral molecules possess high lipophilicity. Herein, we synthesized three different natural lipid-BODIPY conjugates by esterification of an acidic BODIPY by natural lipids, namely: α-tocopherol (vitamin E), cholesterol, and stearyl alcohol. The new BODIPY conjugates were characterized in solvents and oils before being encapsulated in NEs at various concentrations. The physical (size, stability over time, leakage) and photophysical properties (absorption and emission wavelength, brightness, photostability) are reported and showed that the nature of the lipid anchor and the nature of the oil used for emulsification greatly influence the properties of the bright NEs.
Chin wing osteotomy using customised guide and implants: an improvement for a safer and swifter procedure: technical note
J.-C. Lutz, T. Schouman, C. Meyer, C. Savoldelli, A. Louvrier
British Journal of Oral and Maxillofacial Surgery, 2021, 59 (1), pp.129-131. ⟨10.1016/j.bjoms.2020.08.060⟩
Article dans une revueEffects of Warmed and Humidified CO2 Surgical Site Insufflation in a Novel Experimental Model of Magnetic Compression Colonic Anastomosis
Francesco Marchegiani, Eric Noll, Pietro Riva, Seong-Ho Kong, Paola Saccomandi, Giorgia Vita, Véronique Lindner, Izzie-Jacques Namer, Jacques Marescaux, Pierre Diemunsch, Michèle Diana
Surgical Innovation, 2021, 28 (1), pp.7-17. ⟨10.1177/1553350620967225⟩
Article dans une revueAbstractBACKGROUND. Pneumoperitoneum insufflation with warmed and humidified carbon dioxide (WH-CO2) can prevent heat loss and increase tissue oxygenation. We evaluated the impact of localized WH-CO2 insufflation on the anastomotic healing process. METHODS. Sixty male Wistar rats were randomized: Group 1 (control, n = 12), Group 2 (cold and dry CO2, CD-CO2, n = 24), and Group 3 (WH-CO2, n = 24). A magnetic compression side-to-side colonic anastomosis was performed under 60-minute local abdominal CO2 flow insufflation. Animal temperature was recorded. IL-1, IL-6, and CRP levels were assessed before and after insufflation and on postoperative day (POD) 7 and POD 10. Endoscopic follow-up was performed on POD 7 and POD 10. A burst pressure (BP) test of the specimen was performed on POD 10, and histopathological analysis was then performed. Metabolomics of the anastomotic site was determined. RESULTS. Seven rats (5 CD-CO2 group, 1 WH-CO2 group, and 1 control group) died during the survival period. Necropsies revealed intestinal occlusions (n = 2). One additional rat from the CD-CO2 group was sacrificed on POD 7 due to intestinal perforation. The postoperative course was uneventful in the remaining cases. There was no difference in BP among the groups. Thermal monitoring confirmed that WH-CO2 insufflation was effective to reduce heat loss. IL-1 levels were statistically and significantly lower on POD 10 in the WH-CO2 group than the CD-CO2 group but not lower than the control group. CRP levels, histopathology, and metabolomics did not show any difference between the 3 groups. CONCLUSIONS. WH-CO2 was effective to preserve core temperature. However, it did not improve anastomotic healing.
Impact of moderate exercise on fatty acid oxidation in pancreatic β-cells and skeletal muscle
Allan Langlois, Alexis Forterre, Michel Pinget, Karim Bouzakri
Journal of Endocrinological Investigation, 2021, 44 (9), pp.1815-1825. ⟨10.1007/s40618-021-01551-2⟩
Article dans une revueAbstractFatty acids (FA) play a crucial role in glycaemia regulation in healthy and metabolic disorders conditions through various mechanisms. FA oxidation is one of the processes involved in lipid metabolism and can be modulated by exercise. Nowadays, physical activity is known to be an effective strategy for the prevention and treatment of Type 2 Diabetes. Moreover, its intensity, its duration, the sex-gender, the prandial state, exerkines… are as many parameters that can influence glycaemic control. However, the widely debated question is to determine the best type of exercise for patients with metabolic disorders. In this review, we will discuss the impact of exercise intensity, especially moderate activity, on glycaemic control by focussing on FA oxidation in pancreatic β-cells and skeletal muscle. Finally, thanks to all the recent data, we will determine whether moderate physical activity is a good therapeutic strategy and if FA oxidation represents a target of interest to treat diabetic, obese and insulin-resistant patients
COVID-19 is a systemic vascular hemopathy: insight for mechanistic and clinical aspects
David M Smadja, Steven J Mentzer, Michaela Fontenay, Mike A Laffan, Maximilian Ackermann, Julie Helms, Danny Jonigk, Richard Chocron, Gerald B Pier, Nicolas Gendron, Stephanie Pons, Jean-Luc Diehl, Coert Margadant, Coralie Guerin, Elisabetn Jm Huijbers, Aurélien Philippe, Nicolas Chapuis, Patrycja Nowak-Sliwinska, Christian Karagiannidis, Olivier Sanchez, Philipp Kümpers, David Skurnik, Anna M Randi, Arjan W Griffioen
Angiogenesis, 2021, 24 (4), pp.755-788. ⟨10.1007/s10456-021-09805-6⟩
Article dans une revueAbstractCoronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is presenting as a systemic disease associated with vascular inflammation and endothelial injury. Severe forms of SARS-CoV-2 infection induce acute respiratory distress syndrome (ARDS) and there is still an ongoing debate on whether COVID-19 ARDS and its perfusion defect differs from ARDS induced by other causes. Beside pro-inflammatory cytokines (such as interleukin-1 beta [IL-1 beta] or IL-6), several main pathological phenomena have been seen because of endothelial cell (EC) dysfunction: hypercoagulation reflected by fibrin degradation products called D-dimers, micro- and macrothrombosis and pathological angiogenesis. Direct endothelial infection by SARS-CoV-2 is not likely to occur and ACE-2 expression by EC is a matter of debate. Indeed, endothelial damage reported in severely ill patients with COVID-19 could be more likely secondary to infection of neighboring cells and/or a consequence of inflammation. Endotheliopathy could give rise to hypercoagulation by alteration in the levels of different factors such as von Willebrand factor. Other than thrombotic events, pathological angiogenesis is among the recent findings. Overexpression of different proangiogenic factors such as vascular endothelial growth factor (VEGF), basic fibroblast growth factor (FGF-2) or placental growth factors (PlGF) have been found in plasma or lung biopsies of COVID-19 patients. Finally, SARS-CoV-2 infection induces an emergency myelopoiesis associated to deregulated immunity and mobilization of endothelial progenitor cells, leading to features of acquired hematological malignancies or cardiovascular disease, which are discussed in this review. Altogether, this review will try to elucidate the pathophysiology of thrombotic complications, pathological angiogenesis and EC dysfunction, allowing better insight in new targets and antithrombotic protocols to better address vascular system dysfunction. Since treating SARS-CoV-2 infection and its potential long-term effects involves targeting the vascular compartment and/or mobilization of immature immune cells, we propose to define COVID-19 and its complications as a systemic vascular acquired hemopathy.
Rapid Antigen Test Combined with Chest Computed Tomography to Rule Out COVID-19 in Patients Admitted to the Emergency Department
Sabrina Kepka, Mickaël Ohana, François Séverac, Joris Muller, Eric Bayle, Yvon Ruch, Elodie Laugel, Mathieu Oberlin, Morgane Solis, Yves Hansmann, Pascal Bilbault, Samira Fafi-Kremer
Journal of Clinical Medicine, 2021, 10 (16), pp.3455. ⟨10.3390/jcm10163455⟩
Article dans une revueAbstractObjective: Correct and timely identification of SARS-CoV-2-positive patients is critical in the emergency department (ED) prior to admission to medical wards. Antigen-detecting rapid diagnostic tests (Ag-RDTs) are a rapid alternative to Reverse-transcriptase polymerase chain reaction (RT-PCR) for the diagnosis of COVID-19 but have lower sensitivity.Methods: We evaluated the performance in real-life conditions of a strategy combining Ag-RDT and chest computed tomography (CT) to rule out COVID-19 infection in 1015 patients presenting in the ED between 16 November 2020 and 18 January 2021 in order to allow non-COVID-19 patients to be hospitalized in dedicated units directly. The combined strategy performed in the ED for patients with COVID-19 symptoms was assessed and compared with RT-PCR.Results: Compared with RT-PCR, the negative predictive value was 96.7% for Ag-RDT alone, 98.5% for Ag-RDT/CT combined, and increased to 100% for patients with low viral load.Conclusion: A strategy combining Ag-RDT and chest CT is effective in ruling out COVID-19 in ED patients with high precision.
Knowledge and Opinions of French Dental Students in Operative Dentistry - Management of Deep Carious Lesions
Marie-Agnès Gasqui, Laurent Laforest, Justine Le Clerc, Romain Ceinos, Florence Chemla, Valérie Chevalier, Pierre Colon, Florence Fioretti, Alexis Gevrey, Olivia Kerouredan, Delphine Maret, Caroline Mocquot, Canan Ozcan, Fabienne Perez, Elodie Terrer, Yann-Loïg Turpin, Reza Arbab-Chirani, Sophie Domejean, Dominique Seux
Oral Health and Preventive Dentistry, 2021, 19 (1), pp.627-633. ⟨10.3290/j.ohpd.b2403521⟩
Article dans une revueAbstractPurpose: A questionnaire survey was recently undertaken among French dental students (FDSs) to investigate their practices, knowledge and opinions in various domains of minimal intervention (MI) in cariology. The present work focuses on management of deep carious lesions (DCLs). Materials and Methods: The questionnaire was administered (Spring 2018) to all the fifth-year students of the 16 French dental schools. Descriptive analyses were performed. Results: Among 1370 FDSs (response rate: 84.5%), hardness was the most commonly reported criterion for assessing the endpoint of carious tissue removal (53.9%), followed by firm dentin (40.0%). Regarding FDSs' opinion of leaving carious dentine under a restoration, 41.9% of the respondents agreed that carious tissues should always be removed completely. For an asymptomatic tooth with DCLs and exposed pulp, direct pulp capping was mainly chosen (93.9%). In a clinical case correctly diagnosed as a reversible pulpitis by 79.7% of respondents, nearly half of FDSs chose a one-step complete excavation (48.3%) followed by selective excavation (25.1%), then two-step complete excavation (20.9%) and a minority (5.7%) opted for pulpal therapy (biopulpotomy or endodontic treatment). Conclusion: The present results suggest an inadequate dissemination of MI concepts among FDSs towards DCL management. The present results show the need for a harmonisation and a reinforcement of teaching evidence-based MI according to the latest European recommendations.
Aesthetic and psychosocial impact of dentofacial appearance after primary rhinoplasty for cleft lip and palate
Caroline Dissaux, Valérie Diop, Delphine Wagner, Jean-Claude Talmant, Béatrice Morand, Catherine Bruant-Rodier, Laetitia Ruffenach, Bruno Grollemund
Journal of cranio-maxillo-facial surgery official publication of the European Association for Cranio-Maxillo-Facial Surgery, 2021, 49 (10), pp.914-922. ⟨10.1016/j.jcms.2021.06.004⟩
Article dans une revueAbstractThe primary aim of this study was to demonstrate whether primary rhinoplasty shows aesthetic and psychosocial advantages for children with a complete unilateral cleft lip and palate. The second aim was to determine the satisfaction levels concerning the dentofacial appearance. Group A corresponded to patients from a center specialised in primary cheilo-rhinoplasty with 20 years' experience and Group B to patients who did not benefit from primary rhinoplasty. Children and their parents filled in a custom-designed satisfaction questionnaire on dentofacial appearance and its psychosocial impact. The variables studied were the main criterion (the nose) and secondary criteria (the upper lip, the smile, the profile and the face as a whole). 56 families consented to be involved in the study. The children did not rate statistically differently their social relationships if they had primary rhinoplasty or not. Parents however expressed very different views. They considered the nasal appearance of the children who had primary rhinoplasty as statistically more attractive and evaluated their psychosocial experience as significantly better. For the other parts of the face, in both groups, satisfaction levels of dentofacial appearance and psychosocial comfort were good (scores above 80/100). Yet, 44% of the families would go for further interventions, especially concerning the nose (13% of whom were in Group A and 42% in Group B). Within the limitations of this study, primary rhinoplasty seems to improve the patient's well-being and social life and, therefore, should be considered whenever appropriate.
Report from the European Society of Thoracic Surgeons database 2019: current surgical practice and perioperative outcomes of pulmonary metastasectomy
Michel Gonzalez, Alessandro Brunelli, Zalan Szanto, Stefano Passani, Pierre-Emmanuel Falcoz
European Journal of Cardio-Thoracic Surgery, 2021, 59 (5), pp.996-1003. ⟨10.1093/ejcts/ezaa405⟩
Article dans une revueAbstractOBJECTIVES: We report an overview of surgical practices and outcomes in patients undergoing pulmonary metastasectomy based on data from the European Society of Thoracic Surgeons database. METHODS: We retrieved data on resections performed for pulmonary metastases between July 2007 and July 2019. We evaluated baseline characteristics, surgical management and postoperative outcomes. Open and video-assisted thoracic surgery (VATS) procedures were compared in terms of surgical management, morbidity and mortality. RESULTS: We selected 8868 patients [male/female 5031/3837; median age: 64years (interquartile range 55-71)] who underwent pulmonary metastasectomy. Surgical approach consisted of open thoracotomy in 63.5% of cases (n=5627) and VATS in 36.5% (n=3241), with a conversion rate of 2.1% (n=69). Surgical resection was managed by wedge or local excision in 61% (n=5425) of cases and anatomical resection in 39% (n=3443); lobectomy: 26% (n=2307); segmentectomy: 11% (n=949); bilobectomy: 1% (n=95); pneumonectomy: 1% (n=92)). Lymph node assessment was realized in 58% (n=5097) [sampling: 21% (n=1832); complete dissection: 37% (n=3265)]. Overall morbidity and mortality rates were 15% (n=1308) and 0.8% (n=69), respectively. Median duration of stay was 6days (interquartile range 4-8). The rate of VATS procedures increased from 15% in 2007 to 58% in 2018. When comparing VATS and Open surgery, there were significantly (P<0.001) fewer anatomical resections by VATS (24% vs 49%), lymph node assessments (36% vs 70%), less morbidity (9% vs 18%) and shorter durations of stay (median: 4 vs 7 days). CONCLUSIONS: We report a good overview of current surgical practices in terms of resection extent and postoperative outcomes with a gradual acceptance of VATS.
Impact of Smoking on Neutrophil Enzyme Levels in Gingivitis: A Case-Control Study
Rumeysa Omer-Cihangir, Ulku Baser, Canan Kucukgergin, Gokce Aykol-Sahin, Olivier Huck, Funda Yalcin
International Journal of Environmental Research and Public Health, 2021, 18 (15), pp.8075. ⟨10.3390/ijerph18158075⟩
Article dans une revueAbstractBackground: The determination of the impact of risk factors such as smoking in periodontal disease development is of importance to better characterize the disease. However, its impact on host response remains unclear. This study aimed to evaluate the effects of tobacco smoking on GCF levels of neutrophil enzymes (myeloperoxidase (MPO), beta-glucuronidase (BGD), neutrophil elastase (NE) and periodontal parameters in healthy young adults with dental plaque biofilm-induced gingivitis. Methods: The study population consisted of 60 systemically healthy young adults (39 smokers (Sm) and 21 non-smokers (n-Sm)) diagnosed with plaque-induced gingivitis. The periodontal examination consisted of a plaque index (PI); gingival index (GI); probing depth (PD); bleeding on probing (BoP), and clinical attachment level (CAL). GCF MPO, BGD, and NE levels were determined by means of an enzyme-linked immunosorbent assay (ELISA). Results: PI, GI, and BoP were significantly increased in the Sm group (p < 0.05). PD and CAL showed no significant difference between Sm and n-Sm groups (p > 0.05). In GCF, MPO, BGD, and NE levels were significantly increased in Sm group (p < 0.05). NE levels showed a significant correlation with GI and BoP (p < 0.05 for both). Moreover, a positive correlation between BGD and NE levels (p < 0.05) was measured. Conclusions: It may be concluded that, even in young patients, tobacco consumption affects the host's immune response related to gingival inflammation. It is, therefore, mandatory to inform young patients about the risk related to tobacco consumption for their gingival health.
Development of Experimental Mouse Models for Intra-Oral Implants Osteointegration and Alveolar Bone Response Study in the Context of Oro-Dental Rare Developmental Diseases
Marion Strub, Sabine Kuchler-Bopp, J. Hua, Florence Fioretti, Fabien Bornert, Marie-Cecile Manière, Olivier Huck, Nadia Benkirane-Jessel, François Clauss
Stem Cells and Regenerative Medicine, 2021, pp.93-94. ⟨10.3233/BHR210016⟩
Article dans une revueNanomaterials for Endodontic Regeneration
Anta Seck, Naimah Zein, Anasse Nounsi, Ezzedine Harmouch, Ambre Vidal Varbanova, Gabriel Fernandez de Grado, Damien Offner, Jean-Christophe Lutz, Nadia Benkirane-Jessel, Florence Fioretti
Stem Cells and Regenerative Medicine, 2021, pp.88-92. ⟨10.3233/BHR210015⟩
Article dans une revueTemporal variations in the diagnostic performance of chest CT for Covid-19 depending on disease prevalence: Experience from North-Eastern France
Mickaël Ohana, Joris Muller, François Severac, Pascal Bilbault, Martin Behr, Mathieu Oberlin, Pierre Leyendecker, Catherine Roy
European Journal of Radiology, 2021, 134, ⟨10.1016/j.ejrad.2020.109425⟩
Article dans une revueAbstractRationale and Objective: The purpose of this work was to analyze temporal variations in the diagnostic performance of chest CT for Covid-19 throughout the first wave, depending on disease prevalence variations between the ascending, peak and descending phases of the epidemic in North-Eastern France. Materials and Methods: From March 6th to April 22nd 2020, all consecutive adult patients referred to the "Covid-19 clinic" of our Emergency Department with the availability of chest CT and of at least one RT-PCR result were retrospectively included in the present study. Chest CT was considered positive when typical Covid-19 lesions were observed (bilateral and predominantly peripheral and sub-pleural ground glass opacities and/or alveolar consolidations). RT-PCR results were considered as the reference standard. Ascending, peak and descending phases were determined based on the number of CT scans performed daily. CT diagnostic performance were calculated and variations between phases were tested for equivalence or difference using Bayesian methods. Results: 2194 consecutive chest CT were analyzed. Overall CT diagnostic performance was Se = 84.2 [82.0 ; 86.3], Sp = 86.6 [84.5 ; 88.5], PPV = 86.1 [84.0 ; 88.1], NPV = 84.7 [82.6 ; 86.7] and accuracy = 85.4 [83.9 ; 86.8], with no significant differences between chest and non-chest radiologists. Variations between the ascending (11 days, 281 chest CT, disease prevalence 37.0 %), the peak (18 days, 1167 chest CT, disease prevalence 64 %) and the descending phases (19 days, 746 chest CT, disease prevalence 32.2 %) were highest for PPV and NPV with a probability of difference >99.9 %, and smallest for accuracy and specificity with a probability of equivalence >98.8 %. Conclusion: In a homogenous cohort of 2194 consecutive chest CT performed over a 7-week epidemic wave, we observed significant variations of CT predictive values whereas CT specificity appeared marginally affected.
Implication of Toll/IL-1 receptor domain containing adapters in Porphyromonas gingivalis-induced inflammation
Isaac Maximiliano Bugueno, Nadia Benkirane-Jessel, Olivier Huck
Innate Immunity, 2021, 27 (4), pp.324-342. ⟨10.1177/17534259211013087⟩
Article dans une revueAbstractPeriodontitis is induced by periodontal dysbiosis characterized by the predominance of anaerobic species. TLRs constitute the classical pathway for cell activation by infection. Interestingly, the Toll/IL-1 receptor homology domain adapters initiate signaling events, leading to the activation of the expression of the genes involved in the host immune response. The aim of this study was to evaluate the effects of Porphyromonas gingivalis on the expression and protein-protein interactions among five TIR adapters (MAL, MyD88, TRIF, TRAM and SARM) in gingival epithelial cells and endothelial cells. It was observed that P. gingivalis is able to modulate the signaling cascades activated through its recognition by TLR4/2 in gingival epithelial cells and endothelial cells. Indeed, MAL-MyD88 protein-protein interactions associated with TLR4 was the main pathway activated by P. gingivalis infection. When transient siRNA inhibition was performed, cell viability, inflammation, and cell death induced by infection decreased and such deleterious effects were almost absent when MAL or TRAM were targeted. This study emphasizes the role of such TIR adapter proteins in P. gingivalis elicited inflammation and the precise evaluation of TIR adapter protein interactions may pave the way for future therapeutics in both periodontitis and systemic disease with a P. gingivalis involvement, such as atherothrombosis.
An unusual case of dilated coronary sinus: case report and clinical implications
Thomas Cardi, Mickaël Ohana, Halim Marzak, Laurence Jesel-Morel
European Heart Journal. Case Reports, 2021, 5 (10), ⟨10.1093/ehjcr/ytab388⟩
Article dans une revueEnd-Stage Respiratory Failure Secondary to Bronchiolitis Obliterans Syndrome Induced by Toxic Epidermal Necrosis, Also Known as Lyell Syndrome: A Case Report
Maroun Matar, Romain Kessler, Anne Olland, Pierre-Emmanuel Falcoz, Philippe Desprez, Anne Roche, Olivier Collange, Marie-Pierre Chenard, Benjamin Renaud-Picard, Michèle Porzio
Transplantation Proceedings, 2021, 53 (4), pp.1371-1374. ⟨10.1016/j.transproceed.2021.03.020⟩
Article dans une revueAbstractBackground. Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are rare but serious dermatologic diseases. They can be associated with systemic manifestations such as bronchiolitis obliterans syndrome (BOS). SJS/TEN-induced BOS is associated with a poor prognosis, and no guidelines exist regarding its management. Several case reports have described the association between SJS/TEN and BOS, with few patients undergoing lung transplantation as a last resort therapy. Unfortunately, in the published reports, none of the transplanted patients were observed for a long period of time after the transplantation; therefore, the long-term mortality as well as the risk of recurrence of BOS could not be inferred from these reports. Case report. We present the case of a young patient diagnosed with SJS complicated by BOS and end-stage respiratory failure refractory to corticosteroid therapy. She underwent bilateral lung transplantation with an outstanding outcome at 5-year follow-up. Conclusion. SJS/TEN-induced BOS might have a favorable evolution and long-term outcomes following lung transplantation. However, prospective studies are needed to confirm this finding.
Relationship between obesity and severe COVID ‐19 outcomes in patients with type 2 diabetes: Results from the CORONADO study
Sarra Smati, Blandine Tramunt, Matthieu Wargny, Cyrielle Caussy, Benedicte Gaborit, Camille Vatier, Bruno Verges, Deborah Ancelle, Coralie Amadou, Leila Bachir, Olivier Bourron, Christine Coffin‐boutreux, Sara Barraud, Anne Dorange, Bénédicte Fremy, Jean‐françois Gautier, Natacha Germain, Etienne Larger, Stéphanie Laugier‐robiolle, Laurent Meyer, Arnaud Monier, Isabelle Moura, Louis Potier, Nadia Sabbah, Dominique Seret‐bégué, Patrice Winiszewski, Matthieu Pichelin, Pierre-Jean Saulnier, Samy Hadjadj, Bertrand Cariou, Pierre Gourdy
Diabetes, Obesity and Metabolism, 2021, 23 (2), pp.391-403. ⟨10.1111/dom.14228⟩
Article dans une revueAbstractAim: To assess the relationship between body mass index (BMI) classes and early COVID-19 prognosis in inpatients with type 2 diabetes (T2D).Methods: From th e CORONAvirus-SARS-CoV-2 and Diabetes Outcomes(CORONADO) study, we conducted an analysis in patients with T2D categorized by four BMI subgroups according to the World Health Organization classification. Clinical characteristics and COVID-19–related outcomes (i.e. intubation for mechanical ventilation [IMV], death and discharge by day 7 [D7]) were analysed according to BMI status.Results: Among 1965 patients with T2D, 434 (22.1%) normal weight (18.5-24.9 kg/m2, reference group), 726 (36.9%) overweight (25-29.9 kg/m2) and 805 (41.0%) obese subjects were analysed, including 491 (25.0%) with class I obesity (30-34.9 kg/m2) and 314 (16.0%) with class II/III obesity (≥35 kg/m2). In a multivariable-adjusted model, the primary outcome (i.e. IMV and/or death by D7) was significantly associated with overweight (OR 1.65 [1.05-2.59]), class I (OR 1.93 [1.19-3.14]) and class II/III obesity (OR 1.98 [1.11-3.52]). After multivariable adjustment, primary outcome by D7 was significantly associated with obesity in patients aged younger than 75 years, while such an association was no longer found in those aged older than 75 years.Conclusions: Overweight and obesity are associated with poor early prognosis in patients with T2D hospitalized for COVID-19. Importantly, the deleterious impact of obesity on COVID-19 prognosis was no longer observed in the elderly, highlighting the need for specific management in this population.
COVID-19 in Lung Transplant Recipients
Jonathan Messika, Philippine Eloy, Antoine Roux, Sandrine Hirschi, Ana Nieves, Jérôme Le Pavec, Agathe Sénéchal, Christelle Saint Raymond, Nicolas Carlier, Xavier Demant, Aurélie Le Borgne, Adrien Tissot, Marie Pierre Debray, Laurence Beaumont, Benjamin Renaud-Picard, Martine L. Reynaud-Gaubert, Jean-François Mornex, Loïc Falque, Véronique Boussaud, Jacques B. Jougon, Sacha Mussot, Hervé J. Mal
Transplantation, 2021, 105 (1), pp.177-186. ⟨10.1097/TP.0000000000003508⟩
Article dans une revueAbstractBACKGROUND: A concern about the susceptibility of immunocompromised patients to the worldwide pandemic of coronavirus disease 2019 (COVID-19) has been raised. We aimed at describing COVID-19 infections in the French cohort of lung transplant (LT) patients. METHODS: Multicenter nationwide cohort study of all LT recipients with COVID-19 diagnosed from March 1 to May 19, 2020. Recipient main characteristics and their management were retrieved. Hospitalization characteristics, occurrence of complications and survival were analyzed. RESULTS: Thirty-five LT patients with a COVID-19 infection were included. Median age was 50.4 (40.6-62.9) years, 16 (45.7%) were female, and 80% were double-LT recipients. Infection was community-acquired in 25 (71.4%). Thirty-one (88.6%) required hospitalization, including 13 (41.9%) in the intensive care unit. The main symptoms of COVID-19 were fever, cough, and diarrhea, present in 71.4%, 54.3%, and 31.4% of cases, respectively. Extension of pneumonia on chest CT was moderate to severe in 51.4% of cases. Among the 13 critically ill patients, 7 (53.9%) received invasive mechanical ventilation. Thrombotic events occurred in 4 patients. Overall survival rate was 85.7% after a median follow-up of 50 days (41.0-56.5). Four of 5 nonsurvivors had had bronchial complications or intensification of immunosuppression in the previous weeks. On univariate analysis, overweight was significantly associated with risk of death (odds ratio, 16.0; 95% confidence interval, 1.5-170.6; P = 0.02). CONCLUSIONS: For the 35 LT recipients with COVID-19, the presentation was severe, requiring hospitalization in most cases, with a survival rate of 85.7%. Copyright
SPARTE Study: Normalization of Arterial Stiffness and Cardiovascular Events in Patients With Hypertension at Medium to Very High Risk
Stephane Laurent, Gilles Chatellier, Michel Azizi, David Calvet, Gabriel Choukroun, Nicolas Danchin, Pascal Delsart, Xavier Girerd, Philippe Gosse, Hakim Khettab, Gerard London, Jean-Jacques Mourad, Bruno Pannier, Helena Pereira, Dominique Stephan, Paul Valensi, Pedro Cunha, Krzysztof Narkiewicz, Rosa-Maria Bruno, Pierre Boutouyrie
Hypertension, 2021, 78 (4), pp.983-995. ⟨10.1161/HYPERTENSIONAHA.121.17579⟩
Article dans une revueAbstractThe SPARTE study (Strategy for Preventing cardiovascular and renal events based on ARTErial stiffness; URL: https://www.clinicaltrials.gov; Unique identifier: NCT02617238) is a multicenter open-label randomized controlled trial with blinded end point evaluation, undertaken at 25 French research centers in university hospitals. Patients with primary hypertension were randomly assigned (1:1) to a therapeutic strategy targeting the normalization of carotid-femoral pulse wave velocity (PWV) measured every 6 months (PWV group, n=264) versus a classical therapeutic strategy only implementing the European Guidelines for Hypertension Treatment (conventional group, n=272). In the PWV group, the therapeutic strategy used preferably a combination of ACE (angiotensin-converting enzyme) inhibitor or angiotensin receptor blocker and calcium channel blockers, as well as maximal recommended doses of ACE inhibitors and angiotensin receptor blockers. The primary outcome was a combined end point including particularly stroke and coronary events. Secondary outcomes included the time-course changes in brachial office blood pressure (BP), ambulatory BP, PWV, and treatments. After a median follow-up of 48.3 months, there was no significant between-group difference in primary outcome (hazard ratio, 0.74 [95% CI, 0.40-1.38], P=0.35). In the PWV group, combinations of renin-angiotensin-system blockers and calcium channel blockers were prescribed at higher dosage (P=0.028), office and ambulatory systolic blood pressure and diastolic blood pressure decreased more (P<0.001 and P<0.01, respectively), and PWV increased less (P=0.0003) than in the conventional group. The SPARTE study lacked sufficient statistical power to demonstrate its primary outcome. However, it demonstrated that a PWV-driven treatment for hypertension enables to further reduce office and ambulatory systolic blood pressure and diastolic blood pressure and prevent vascular aging in patients with hypertension at medium-to-very-high risk, compared with strict application of guidelines.
A Machine Learning Approach to Estimate the Glomerular Filtration Rate in Intensive Care Unit Patients Based on Plasma Iohexol Concentrations and Covariates
Jean-Baptiste Woillard, Charlotte Salmon Gandonnière, Alexandre Destere, Stephan Ehrmann, Hamid Merdji, Armelle Mathonnet, Pierre Marquet, Chantal Barin-Le Guellec
Clinical Pharmacokinetics, 2021, 60, pp.223-233. ⟨10.1007/s40262-020-00927-6⟩
Article dans une revueAbstractObjective This work aims to evaluate whether a machine learning approach is appropriate to estimate the glomerular filtration rate in intensive care unit patients based on sparse iohexol pharmacokinetic data and a limited number of predictors. Methods Eighty-six unstable patients received 3250 mg of iohexol intravenously and had nine blood samples collected 5, 30, 60, 180, 360, 540, 720, 1080, and 1440 min thereafter. Data splitting was performed to obtain a training (75%) and a test set (25%). To estimate the glomerular filtration rate, 37 candidate potential predictors were considered and the best machine learning approach among multivariate-adaptive regression spline and extreme gradient boosting (Xgboost) was selected based on the root-mean-square error. The approach associated with the best results in a ten-fold cross-validation experiment was then used to select the best limited combination of predictors in the training set, which was finally evaluated in the test set. Results The Xgboost approach yielded the best performance in the training set. The best combination of covariates comprised iohexol concentrations at times 180 and 720 min; the relative deviation from these theoretical times; the difference between these two concentrations; the Simplified Acute Physiology Score II; serum creatinine; and the fluid balance. It resulted in a root-mean-square error of 6.2 mL/min and an r2 of 0.866 in the test set. Interestingly, the eight patients in the test set with a glomerular filtration rate < 30 mL/min were all predicted accordingly. Conclusions Xgboost provided accurate glomerular filtration rate estimation in intensive care unit patients based on two timed blood concentrations after iohexol intravenous administration and three additional predictors.
A Co-Culture Model of the Human Respiratory Tract to Discriminate the Toxicological Profile of Cationic Nanoparticles According to Their Surface Charge Density
Yasmin Arezki, Juliette Cornacchia, Mickaël Rapp, Luc Lebeau, Françoise Pons, Carole Ronzani
Toxics, 2021, 9 (9), pp.210. ⟨10.3390/toxics9090210⟩
Article dans une revueAbstractThis study aimed at discriminating with sensitivity the toxicological effects of carbon dots (CDs) with various zeta potential (ζ) and charge density (Qek) in different cellular models of the human respiratory tract. One anionic and three cationic CDs were synthetized as follows: CD-COOH (ζ = −43.3 mV); CD-PEI600 (Qek = 4.70 µmol/mg; ζ = +31.8 mV); CD-PEHA (Qek = 3.30 µmol/mg; ζ = +29.2 mV) and CD-DMEDA (Qek = 0.01 µmol/mg; ζ = +11.1 mV). Epithelial cells (A549) and macrophages (THP-1) were seeded alone or as co-cultures with different A549:THP-1 ratios. The obtained models were characterized, and multiple biological responses evoked by CDs were assessed in the mono-cultures and the best co-culture model. With 14% macrophages, the 2:1 ratio co-culture best mimicked the in vivo conditions and responded to lipopolysaccharides. The anionic CD did not induce any effect in the mono-cultures nor in the co-culture. Among the cationic CDs, the one with the highest charge density (CD-PEI600) induced the most pronounced responses whatever the culture model. The cationic CDs of low charge density (CD-PEHA and CD-DMEDA) evoked similar responses in the mono-cultures, whereas in the co-culture, the three cationic CDs ranked according to their charge density (CD-PEI600 > CD-PEHA > CD-DMEDA), when taking into account their inflammatory effect. Thus, the co-culture system developed in this study appears to be a sensitive model for finely discriminating the toxicological profile of cationic nanoparticles differing by the density of their surface charges.
Interest of anatomical segmentectomy over lobectomy for lung cancer: a nationwide study
Elodie Berg, Leslie Madelaine, Jean-Marc Baste, Marcel Dahan, Pascal Thomas, Pierre-Emmanuel Falcoz, Emmanuel Martinod, Alain Bernard, Pierre-Benoit Pages
Journal of Thoracic Disease, 2021, 13 (6), ⟨10.21037/jtd-20-2203⟩
Article dans une revueAbstractBackground: Anatomical segmentectomy is an alternative to lobectomy for early-stage lung cancer (LC) or in patients at high risk. The main objective of this study was to compare the morbidity and mortality associated with these two types of pulmonary resection using data from the French National Epithor database. Methods: All patients who underwent lobectomy or segmentectomy for early-stage LC from January 1st 2014 to December 31st 2016 were identified in the Epithor database. The primary endpoint was morbidity; the secondary endpoint was postoperative mortality. Propensity score matching was implemented and used to balance groups. The results were reported as odds ratios (OR) and 95% confidence intervals (CI). Results: During the study period, 1,604 segmentectomies (9.78%) and 14,786 lobectomies (90.22%) were performed. After matching, the segmentectomy group experienced significantly less atelectasis (OR 0.54; 95% CI: 0.4-0.75, P<0.0001), pneumonia (OR 0.72; 95% CI: 0.55-0.95, P=0.02), prolonged air leaks (OR 0.75; 95% CI: 0.64-0.89, P=0.001) or bronchopleural fistula (OR 0.35; 95% CI: 0.14-0.83, P=0.017), and fewer patients had at least one complication (OR 0.7; 95% CI: 0.62-0.78, P<0.0001). According to the Clavien-Dindo classification, postoperative complications were significantly less severe in the segmentectomy group (OR 0.52; 95% CI: 0.37-0.74, P<0.0001). There was no significant difference in postoperative mortality at 30 days (OR 0.67; 95% CI: 0.38-1.20, P=0.18), 60 days (OR 0.78; 95% CI: 0.42-1.47, P=0.4), or 90 days (OR 0.77; 95% CI: 0.45-1.34, P=0.36). Conclusions: Anatomical segmentectomy is an alternative surgical approach that could reduce postoperative morbidity, but it does not appear to affect mortality.
Prognostic Value of C-Reactive Protein to Lymphocyte Ratio (CLR) in Emergency Department Patients with SARS-CoV-2 Infection
Ndenga Tonduangu, Pierrick Le Borgne, François Lefebvre, Karine Alame, Lise Bérard, Yannick Gottwalles, Lauriane Cipolat, Stéphane Gennai, Pascal Bilbault, Charles-Eric Lavoignet, Laure Abensur Vuillaume
Journal of Personalized Medicine, 2021, 11 (12), pp.1274. ⟨10.3390/jpm11121274⟩
Article dans une revueAbstractIntroduction: According to recent studies, the ratio of C-reactive-protein to lymphocyte is more sensitive and specific than other biomarkers associated to systemic inflammatory processes. This study aimed to determine the prognostic value of CLR on COVID-19 severity and mortality at emergency department (ED) admission. Methods: Between 1 March and 30 April 2020, we carried out a multicenter and retrospective study in six major hospitals of northeast France. The cohort was composed of patients hospitalized for a confirmed diagnosis of moderate to severe COVID-19. Results: A total of 1,035 patients were included in this study. Factors associated with infection severity were the CLR (OR: 1.001, CI 95%: (1.000–1.002), p = 0.012), and the lymphocyte level (OR: 1.951, CI 95%: (1.024–3.717), p = 0.042). In multivariate analysis, the only biochemical factor significantly associated with mortality was lymphocyte rate (OR: 2.308, CI 95%: (1.286–4.141), p = 0.005). The best threshold of CLR to predict the severity of infection was 78.3 (sensitivity 79%; specificity 47%), and to predict mortality, was 159.5 (sensitivity 48%; specificity 70%). Conclusion: The CLR at admission to the ED could be a helpful prognostic biomarker in the early screening and prediction of the severity and mortality associated with SARS-CoV-2 infection.
Why do we need harmonization in thoracic surgery: a view from above by the European Union of Medical Specialists
Toni Lerut, Dirk Van Raemdonck, Gilbert Massard
Journal of Thoracic Disease, 2021, 13 (3), pp.2021 - 2028. ⟨10.21037/jtd.2019.01.49⟩
Article dans une revueAbstractFounded in 1958 the UEMS (Union Européenne des Médecins Spécialistes—European Union of Medical Specialists) has become the largest European Medical organization representing over 1.5 million specialists of 43 Specialties in 39 countries. The primary goal of UEMS is to defend the interests of Specialists in the broadest sense of the word. This includes promoting the highest quality of care, the highest standards of training, continuous professional development (CPD) and continuous medical education (CME). For the latter the European Accreditation Council for Continuous Medical Education (EACCME) is one of the main assets of UEMS. The UEMS Section of Thoracic Surgery was created in 2013 and has substantially contributed to the improvement of the identity of Thoracic Surgery as a specialty throughout Europe. Its main activities are focusing on harmonization of training and organization of the format of the UEMS Board in Thoracic Surgery as well as further molding of the specialty via an intense collaboration with all involved stakeholders over the specialty boundaries.
Conversion from video-assisted thoracic surgery (VATS) to thoracotomy during major lung resection: how does it affect perioperative outcomes?
Joseph Seitlinger, Anne Olland, Sophie Guinard, Gilbert Massard, Pierre-Emmanuel Falcoz
Interactive Cardiovascular and Thoracic Surgery, 2021, 32 (1), pp.55-63. ⟨10.1093/icvts/ivaa220⟩
Article dans une revueAbstractAbstract OBJECTIVES Since video-assisted thoracic surgery (VATS) was first performed in the early 1990s, there have been many developments, and the conversion rate has decreased over the years. This article highlights the specific outcomes of patients undergoing conversion to thoracotomy despite initially scheduled VATS lung resection. METHODS We retrospectively reviewed 501 patients who underwent thoracoscopic anatomic lung resection (i.e. lobectomy, segmentectomy or bilobectomy) between 1 January 2012 and 1 August 2017 at our institution. We explored the risk factors for surgical conversion and adverse events occurring in patients who underwent conversion to thoracotomy. RESULTS A total of 44/501 patients underwent conversion during the procedure (global rate: 8.8%). The main reasons for conversion were (i) anatomical variation, adhesions or unexpected tumour extension (37%), followed by (ii) vascular causes (30%) and (iii) unexpected lymph node invasion (20%). The least common reason for conversion was technical failure (13%). We could not identify any specific risk factors for conversion. The global complication rate was significantly higher in converted patients (40.9%) than in complete VATS patients (16.8%) (P = 0.001). Postoperative atrial fibrillation was a major complication in converted patients (18.2%) [odds ratio (OR) 5.09, 95% confidence interval (CI) 1.80–13.27; P = 0.001]. Perioperative mortality was higher in the conversion group (6.8%) than in the VATS group (0.2%) (OR 33.3, 95% CI 3.4–328; P = 0.003). CONCLUSIONS Through the years, the global conversion rate has dramatically decreased to <10%. Nevertheless, patients who undergo conversion represent a high-risk population in terms of complications (40.9% vs 16.8%) and perioperative mortality (6.8% vs 0.2%).
Development of prohibitin ligands against osteoporosis
Redouane Tabti, François Lamoureux, Céline Charrier, Benjamin Ory, Dominique Heymann, Embarek Bentouhami, Laurent Désaubry
European Journal of Medicinal Chemistry, 2021, 210, pp.112961. ⟨10.1016/j.ejmech.2020.112961⟩
Article dans une revueKnowledge and Management of Halitosis in France and Lebanon: A Questionnaire-Based Study
Laetitia Harmouche, Yves Reingewirtz, Nicolas Tuzin, François Lefebvre, Jean-Luc Davideau, Olivier Huck
Journal of Clinical Medicine, 2021, 10 (3), pp.502. ⟨10.3390/jcm10030502⟩
Article dans une revueAbstractHalitosis is a growing issue and its management is highly challenging. The aim of this study was to evaluate the knowledge and treatment strategies used by French (FD) and Lebanese (LD) dentists. A self-administered structured questionnaire was sent to FD and LD comprising questions about professional characteristics, management, and treatment of halitosis, patients' referral, and halitosis-related knowledge. A multivariate analysis was conducted to determine differences between FD and LD and to identify parameters that could influence dentists' management of halitosis. The questionnaire was filled out by 156 FD and 257 LD. Among them, 78.8% of FD and 68.9% of LD were confronted with halitosis management, while only a few routinely asked their patients about halitosis (16% FD, 13.2% LD). Regarding anamnesis, oral hygiene habits were more investigated by FD than LD (p < 0.05). The overall treatment satisfaction was low with 39.7% of FD and 28.4% of LD considering their treatment effective. Regarding halitosis-related knowledge, extra-oral causes were overestimated in both populations. FD (83.4%) and LD (65.8%) considered their education regarding halitosis as insufficient. This study highlights the need of professional education in both countries, targeting proper diagnosis and treatment strategies of halitosis.
Neutrophil-to-Lymphocyte Ratio and Early Variation of NLR to Predict In-Hospital Mortality and Severity in ED Patients with SARS-CoV-2 Infection
Laure Abensur Vuillaume, Pierrick Le Borgne, Karine Alamé, François Lefebvre, Lisa Berard, Nicolas Delmas, Lauriane Cipolat, Stéphanie Gennai, Pascal Bilbault, Charles-Eric Lavoignet
Journal of Clinical Medicine, 2021, 10 (12), pp.2563. ⟨10.3390/jcm10122563⟩
Article dans une revueAbstractIntroduction: The neutrophil-to lymphocyte ratio is valued as a predictive marker in several inflammatory diseases. For example, an increasing NLR is a risk factor of mortality in sepsis. It also appears to be helpful in other settings such as cancer. The aim of our work was to study the prognostic value of NLR for disease severity and mortality in patients infected with SARS-CoV-2 upon their admission to the Emergency Department (ED) and its early variation (Delta NLR) in the first 24 h of management (H-24). Methods: Between 1 March and 30 April 2020, we conducted a multicenter and retrospective cohort study of patients with moderate or severe coronavirus disease 19 (COVID-19), who were all hospitalized after presenting to the ED. Results: A total of 1035 patients were included in our study. Factors associated with infection severity were C-reactive protein level (OR: 1.007, CI 95%: [1.005-1.010], p < 0.001), NLR at H-24 (OR: 1.117, CI 95%: [1.060-1.176], p < 0.001), and Delta NLR (OR: 1.877, CI 95%: [1.160-3.036], p: 0.01). The best threshold of Delta NLR to predict the severity of infection was 0.222 (sensitivity 56.1%, specificity 68.3%). In multivariate analysis, the only biochemical factor significantly associated with mortality was again Delta NLR (OR: 2.142, CI 95%: ([1.132-4.056], p: 0.019). The best threshold of Delta NLR to predict mortality was 0.411 (sensitivity 53.3%; specificity 67.3%). Conclusion: The NLR and its early variation (Delta NLR) could help physicians predict both severity and mortality associated with SARS-CoV-2 infection, hence contributing to optimized patient management (accurate triage and treatment).
Comments on: "Is patient-specific instrumentation more precise than conventional techniques and navigation in achieving planned correction in high tibial osteotomy?" by N. Tardy, C. Steltzlen, N. Bouguennec, J.-L. Cartier, P. Mertl, C. Bataillé, et al. published in Orthop Traumatol Surg Res 2020;8S:S231-S236.
Grégoire Micicoi, Henri Favreau, Christophe Jacquet, Matthieu Ehlinger, Matthieu Ollivier
Orthopaedics & Traumatology: Surgery & Research, 2021, 107 (2), pp.102841. ⟨10.1016/j.otsr.2021.102841⟩
Article dans une revueGlobal varus malalignment increase from double-leg to single-leg stance due to intra-articular changes.
Léo-Pôhl Bardot, Grégoire Micicoi, Henri Favreau, Petr Zeman, Raghbir Khakha, Matthieu Ehlinger, Matthieu Ollivier
Knee Surgery, Sports Traumatology, Arthroscopy, 2021, 30 (2), pp.715-720. ⟨10.1007/s00167-021-06446-6⟩
Article dans une revueAbstractPURPOSE: Preoperatively planned correction for tibial osteotomy surgery is usually based on weightbearing long-leg Xrays, while the surgery is performed in a supine non-weightbearing position. The purpose of this study was to assess the differences in lower limb alignment in three different weightbearing conditions: supine position, double-leg (DL) stance and single-sleg (SL) stance prior to performing a medial opening wedge high tibial osteotomy (MOWHTO) for varus malalignment. The hypothesis of this study was that progressive limb-loading would lead to an increased preoperative varus deformity. MATERIAL AND METHODS: This retrospective study included 89 patients (96 knees) with isolated medial knee osteoarthritis (Ahlbäck grade I or II) and significant metaphyseal tibial vara (\textgreater 6°). The differences between supine position, DL stance and SL stance were analysed for the hip-knee-ankle angle (HKA), lateral distal femoral angle (LDFA), medial proximal tibial angle (MPTA), weight-bearing line ratio (WBL) and joint line convergence angle (JLCA). RESULTS: From a supine position to DL stance, the HKA angle slightly increased from 175.5° ± 1.1° to 176.3° ± 1.1° and JLCA changed from 2.0° ± 0.3° to 1.8° ± 0.3° without a statistically significant difference. From DL to SL stances, the HKA angle decreased from 176.3° ± 1.1° to 174.4° ± 1.1° (p \textless 0.05) and the JLCA increased from 1.8° ± 0.3° to 2.6° ± 0.3° (p \textless 0.05). A significant correlation was found between ΔHKA and ΔJLCA between the DL and the SL stances (R(2) = 0.46; p = 0.01). CONCLUSION: Varus malalignment increases with weight-bearing loading from double-leg to single-leg stances with an associated JLCA increase. Thus, single-leg stance radiographs may be useful to correct preoperative planning considering patient-specific changes in JLCA. LEVEL OF CLINICAL EVIDENCE: III, retrospective comparative study.
Ten-years outcomes of islet transplantation in patients with type 1 diabetes: data from the Swiss-French GRAGIL network
S. Lablanche, S. Borot, A. Wojtusciszyn, K. Skaare, A. Penfornis, P. Malvezzi, L. Badet, C. Thivolet, E. Morelon, F. Buron, E. Renard, I. Tauveron, O. Villard, M. Munch, S. Sommacal, L. Clouaire, M. Jacquet, L. Gonsaud, C. Camillo-Brault, C. Colin, J. L. Bosson, D. Bosco, T. Berney, L. Kessler, P. Y. Benhamou
American Journal of Transplantation, 2021, Online ahead of print. ⟨10.1111/ajt.16637⟩
Article dans une revueAbstractTo describe the 10-year outcomes of islet transplantation within the Swiss-French GRAGIL Network, in patients with type 1 diabetes experiencing high glucose variability associated with severe hypoglycemia and/or with functional kidney graft. We conducted a retrospective analysis of all subjects transplanted in the GRAGIL-1c and GARGIL-2 islet transplantation trials and analyzed components of metabolic control, graft function and safety outcomes over the 10-year period of follow-up. Forty-four patients were included between September 2003 and April 2010. Thirty-one patients completed a ten-year follow-up. Ten years after islet transplantation, median HbA1c was 7.2% [6.2-8.0] (55 mmol/mol [44-64]) vs 8.0% [7.1-9.1] (64 mmol/mol [54-76]) before transplantation (p\textless0.001). 17/23 (73.9%) recipients were free of severe hypoglycemia, 1/21 patient (4.8%) was insulin-independent and median C-peptide was 0.6 ng/ml [0.2-1.2]. Insulin requirements (UI/kg/day) were 0.3 [0.1-0.5] vs 0.5 [0.4-0.6] before transplantation (p\textless0.001). Median [IQR] β-score was 1 [0-4] (p\textless0.05 when comparing with pre-transplantation values) and 51.9% recipients had a functional islet graft at 10 years. With a 10-year follow up in a multicentric network, islet transplantation provided sustained improvement of glycemic control and was efficient to prevent severe hypoglycemia in almost 75% of the recipients.
Cerebrospinal Fluid Features in Patients With Coronavirus Disease 2019 and Neurological Manifestations: Correlation with Brain Magnetic Resonance Imaging Findings in 58 Patients.
François Lersy, Ilies Benotmane, Julie Helms, Olivier Collange, Maleka Schenck, Jean-Christophe Brisset, Agathe Chammas, Thibault Willaume, Nicolas Lefebvre, Morgane Solis, Yves Hansmann, Thibaut Fabacher, Sophie Caillard-Ohlmann, Paul-Michel Mertes, Julien Pottecher, Francis Schneider, Ferhat Meziani, Samira Fafi-Kremer, Stéphane Kremer
Journal of Infectious Diseases, 2021, 223, ⟨10.1093/infdis/jiaa745⟩
Article dans une revueAbstractBackground: Neurological manifestations are common in patients with coronavirus disease 2019 (COVID-19), but little is known about pathophysiological mechanisms. In this single-center study, we examined neurological manifestations in 58 patients, including cerebrospinal fluid (CSF) analysis and neuroimaging findings.Methods: The study included 58 patients with COVID-19 and neurological manifestations in whom severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reverse-transcription polymerase chain reaction screening and on CSF analysis were performed. Clinical, laboratory, and brain magnetic resonance (MR) imaging data were retrospectively collected and analyzed.Results: Patients were mostly men (66%), with a median age of 62 years. Encephalopathy was frequent (81%), followed by pyramidal dysfunction (16%), seizures (10%), and headaches (5%). CSF protein and albumin levels were increased in 38% and 23%, respectively. A total of 40% of patients displayed an elevated albumin quotient, suggesting impaired blood-brain barrier integrity. CSF-specific immunoglobulin G oligoclonal band was found in 5 patients (11%), suggesting an intrathecal synthesis of immunoglobulin G, and 26 patients (55%) presented identical oligoclonal bands in serum and CSF. Four patients (7%) had a positive CSF SARS-CoV-2 reverse-transcription polymerase chain reaction. Leptomeningeal enhancement was present on brain MR images in 20 patients (38%).Conclusions: Brain MR imaging abnormalities, especially leptomeningeal enhancement, and increased inflammatory markers in CSF are frequent in patients with neurological manifestations related to COVID-19, whereas SARS-CoV-2 detection in CSF remained scanty.
Spray-drying-derived amorphous calcium phosphate: a multi-scale characterization
Sylvain Le Grill, Jérémy Soulié, Yannick Coppel, Pierre Roblin, Pierre Lecante, Olivier Marsan, Cédric Charvillat, Ghislaine Bertrand, Christian Rey, Fabien Brouillet
Journal of Materials Science, 2021, 56 (2), pp.1189-1202. ⟨10.1007/s10853-020-05396-7⟩
Article dans une revueAbstractAmorphous calcium orthophosphates (ACP) are bioactive compounds presenting high interest as bone substitute. However, the synthesis of such metastable products requires special attention as they can rapidly evolve into a crystalline phase during the elaboration process. The resulting increased stability generally leads to less bioactive reactive materials. Among the various strategies developed to obtain stable form of ACP, the use of spray drying is an effective and reproducible route. Compared to previous works, this study aims to demonstrate for the first time the feasibility of ACP elaboration by spray drying directly from a single solution of selected precursors. Moreover, structuration of the spray-dried powders was determined at different length scales, demonstrating a hierarchical organization from nanometric clusters to particles aggregates. These complementary analyses highlighted a thorough mechanism of particles formation during processing. The effect of the initial composition of the solution was observed, and it was demonstrated that there is a correlation with the purity of the final product that may be modulated. In addition, ACP powders were found to be highly reactive in aqueous medium and their fast transformation into low crystalline apatite suggests a good suitability for biomedical use.
Assessment of Tactile Sensitivity Threshold Using Cochet-Bonnet Esthesiometer and Semmes-Weinstein Monofilaments and Their Use in Corneal Neurotization
Frederic Vinee, Oana Grobnicu, Charlotte Errera, Gabrielle Gomart, Nicolas Tuzin, Antoine Heitz, Philippe Liverneaux, Tristan Bourcier
Ophthalmic Plastic and Reconstructive Surgery, 2021, 37 (3S), ⟨10.1097/IOP.0000000000001788⟩
Article dans une revueClinical features of patients with acute coronary syndrome during the COVID-19 pandemic
Kensuke Matsushita, Sebastien Hess, Benjamin Marchandot, Chisato Sato, Dinh Phi Truong, Ngoc Thanh Kim, Anne Weiss, Laurence Jesel, Patrick Ohlmann, Olivier Morel
Journal of Thrombosis and Thrombolysis, 2021, 52 (1), pp.95-104. ⟨10.1007/s11239-020-02340-z⟩
Article dans une revueAbstractAlthough a reduction in hospital admissions of acute coronary syndromes (ACS) patients has been observed globally during the coronavirus disease 2019 (COVID-19) pandemic, clinical features of those patients have not been fully investigated. The aim of the present analysis is to investigate the incidence, clinical presentation, and outcomes of patients with ACS during the COVID-19 pandemic. We performed a retrospective analysis of consecutive patients who were admitted for ACS at our institution between March 1 and April 20, 2020 and compared with the equivalent period in 2019. Admissions for acute myocardial infarction (AMI) reduced by 39.5% in 2020 compared with the equivalent period in 2019. Owing to the emergency medical services (EMS) of our region, all time components of ST-elevated myocardial infarction care were similar during the COVID-19 outbreak as compared with the previous year's dataset. Among the 106 ACS patients in 2020, 7 patients tested positive for COVID-19. Higher incidence of type 2 myocardial infarction (29% vs. 4%, p = 0.0497) and elevated D-dimer levels (5650 μg/l [interquartile range (IQR) 1905-13,625 μg/l] vs. 400 μg/l [IQR 270-1050 μg/l], p = 0.02) were observed in COVID-19 patients. In sum, a significant reduction in admission for AMI was observed during the COVID-19 pandemic. COVID-19 patients were characterized by elevated D-dimer levels on admission, reflecting enhanced COVID-19 related thrombogenicity. The prehospital evaluation by EMS may have played an important role for the timely revascularization for STEMI patients.
Automatic Liver Viability Scoring with Deep Learning and Hyperspectral Imaging
Éric Felli, Mahdi Al-Taher, Toby Collins, Richard Nkusi, Emanuele Felli, Andrea Baiocchini, Veronique Lindner, Cindy Vincent, Manuel Barberio, Bernard Geny, Giuseppe Maria Ettorre, Alexandre Hostettler, Didier Mutter, Sylvain Gioux, Catherine Schuster, Jacques Marescaux, Jordi Gracia-Sancho, Michele Diana
Diagnostics, 2021, 11 (9), pp.1527. ⟨10.3390/diagnostics11091527⟩
Article dans une revueAbstractHyperspectral imaging (HSI) is a non-invasive imaging modality already applied to evaluate hepatic oxygenation and to discriminate different models of hepatic ischemia. Nevertheless, the ability of HSI to detect and predict the reperfusion damage intraoperatively was not yet assessed. Hypoxia caused by hepatic artery occlusion (HAO) in the liver brings about dreadful vascular complications known as ischemia-reperfusion injury (IRI). Here, we show the evaluation of liver viability in an HAO model with an artificial intelligence-based analysis of HSI. We have combined the potential of HSI to extract quantitative optical tissue properties with a deep learning-based model using convolutional neural networks. The artificial intelligence (AI) score of liver viability showed a significant correlation with capillary lactate from the liver surface (r = -0.78, p = 0.0320) and Suzuki's score (r = -0.96, p = 0.0012). CD31 immunostaining confirmed the microvascular damage accordingly with the AI score. Our results ultimately show the potential of an HSI-AI-based analysis to predict liver viability, thereby prompting for intraoperative tool development to explore its application in a clinical setting.
D-Dimers Level as a Possible Marker of Extravascular Fibrinolysis in COVID-19 Patients
Antonin Trimaille, Jecko Thachil, Benjamin Marchandot, Anaïs Curtiaud, Ian Leonard-Lorant, Adrien Carmona, Kensuke Matsushita, Chisato Sato, Laurent Sattler, Lelia Grunebaum, Yves Hansmann, Samira Fafi-Kremer, Laurence Jesel, Mickaël Ohana, Olivier Morel
Journal of Clinical Medicine, 2020, 10 (1), pp.39. ⟨10.3390/jcm10010039⟩
Article dans une revueAbstractBackground and Objective: Host defence mechanisms to counter virus infection include the activation of the broncho-alveolar haemostasis. Fibrin degradation products secondary to extravascular fibrin breakdown could contribute to the marked increase in D-Dimers during COVID-19. We sought to examine the prognostic value on lung injury of D-Dimers in non-critically ill COVID-19 patients without thrombotic events. Methods: This study retrospectively analysed hospitalized COVID-19 patients classified according to a D-Dimers threshold following the COVID-19 associated haemostatic abnormalities (CAHA) classification at baseline and at peak (Stage 1: D-Dimers less than threefold above normal; Stage 2: D-Dimers three-to six-fold above normal; Stage 3: D-Dimers six-fold above normal). The primary endpoint was the occurrence of critical lung injuries on chest computed tomography. The secondary outcome was the composite of in-hospital death or transfer to the intensive care unit (ICU). Results: Among the 123 patients included, critical lung injuries were evidenced in 8 (11.9%) patients in Stage 1, 6 (20%) in Stage 2 and 15 (57.7%) in Stage 3 (p = 0.001). D-Dimers staging at peak was an independent predictor of critical lung injuries regardless of the inflammatory burden assessed by CRP levels (OR 2.70, 95% CI (1.50-4.86); p < 0.001) and was significantly associated with increased in-hospital death or ICU transfer (14.9 % in Stage 1, 50.0% in Stage 2 and 57.7% in Stage 3 (p < 0.001)). D-Dimers staging at peak was an independent predictor of in-hospital death or ICU transfer (OR 2.50, CI 95% (1.27-4.93); p = 0.008). Conclusions: In the absence of overt thrombotic events, D-Dimers quantification is a relevant marker of critical lung injuries and dismal patient outcome.
Improved performance and safety from Argus II retinal prosthesis post-approval study in France
Marie-Noelle Delyfer, David Gaucher, S. Mohand-Saïd, P. O. Barale, F. Rezaigua-Studer, S. Ayello-Scheer, Hélène Dollfus, J. D. Dorn, Jean-François Korobelnik, J. A. Sahel
Acta Ophthalmologica, 2020, ⟨10.1111/aos.14728⟩
Article dans une revueAbstractPURPOSE: To evaluate the post-approval long-term outcomes of the Argus II Retinal Prosthesis, with a specific focus on its functional visual benefit in patients' daily activities. METHODS: Eighteen patients with bare light perception due to end-stage retinitis pigmentosa were included in a French prospective, multicentre, single-arm study and followed for 2 years. Visual benefit in patients' daily activities was monitored through the use of the Functional Low-vision Observer Rated Assessment (FLORA), and the final score at 2 years was the primary effectiveness outcome. Standardized visual assessments were also performed. Device- or procedure-related adverse events were recorded. RESULTS: Seventeen subjects completed the study. Positive impacts of the Argus II system on functional vision and well-being were demonstrated for over 70% of subjects on the FLORA. Among the daily activities/tasks tested, finding doorways was one of the most statistically significantly improved tasks (p < 0.001), along with estimating the size of an obstacle (p < 0.001), visually locating a place setting on a dining table (p < 0.001) and visually locating people in a non-crowded setting (p < 0.001). Visual function was improved on most standardized tests. Only two device- or procedure-related serious adverse events were observed (one vitreous haemorrhage and one endophthalmitis, both resolved with treatment). No explantation was required. CONCLUSION: This first report of a completed post-approval study of Argus II with a two-year follow-up demonstrates the safety and effectiveness of the Argus II System in a real-world cohort of patients and further highlights its real functional benefit in implanted patients' daily activities.
Is nonanatomic rectal resection a valid therapeutic option for rectal gastrointestinal stromal tumors? A proposed decision algorithm
Benoît Romain, Jean-Baptiste Delhorme, Gilles Manceau, Jérémie Lefevre, Christophe Trésallet, Pascale Mariani, Antonio Iannelli, Philippe Rouanet, Guillaume Piessen, Cécile Brigand
Journal of Surgical Oncology, 2020, 122 (8), pp.1639-1646. ⟨10.1002/jso.26215⟩
Article dans une revueAbstractBackground and objectives The best surgical approach to rectal gastrointestinal stromal tumors (GISTs) is still debated, and both nonanatomic rectal resection (NARR) and anatomic rectal resection (ARR) are applied. The aim of this study was to evaluate the feasibility and oncological outcomes of NARR and ARR for rectal GISTs (R‐GISTs). Methods Through a large French multicentre retrospective study, 35 patients were treated for R‐GIST between 2001 and 2013. Patients who underwent NARR and ARR were compared. Results There were 23 (65.7%) patients in group ARR and 12 (34.3%) in group NARR. Significantly more patients in the group with ARR had a neoadjuvant treatment (86%) with tyrosine kinase inhibitor (TKI) (imatinib) compared to those with NARR (25%) ( p < .01). The median preoperative tumor size was significantly different between the groups without and with neoadjuvant TKI: 30 ± 23 mm versus 64 ± 44.4 mm, respectively ( p < .001). Overall postoperative morbidity was 20% ( n = 7) (26% for ARR vs. 8% for NARR; p = .4). After a median follow‐up of 60.2 (3.2–164.3) months, the 5‐year disease‐free survival rates were 79.5% (confidence interval [CI] 95%: 54–100) for the NARR group and 68% (CI 95%: 46.4–89.7) for the ARR group ( p = .697), respectively. Conclusion The use of NARR for small R‐GIST's does not seem to impair the oncological prognosis.
Anatomical segmentectomy versus pulmonary lobectomy for stage I non-small-cell lung cancer: patients selection and outcomes from the European Society of Thoracic Surgeons database analysis
Davide Tosi, Mario Nosotti, Gianluca Bonitta, Paolo Mendogni, Luca Bertolaccini, Lorenzo Spaggiari, Alex Brunelli, Enrico Ruffini, Pierre-Emmanuel Falcoz
Interactive Cardiovascular and Thoracic Surgery, 2020, 32 (4), pp.546-551. ⟨10.1093/icvts/ivaa298⟩
Article dans une revueAbstractOBJECTIVES : The aims of this study were to describe the potential selection criteria for patients scheduled for lobectomy versus segmentectomy for stage I non-small-cell lung cancer and to compare the 2 procedures in terms of intraoperative variables and postoperative outcomes using the European Society of Thoracic Surgeons (ESTS) Registry. METHODS: This observational multicentre retrospective cross-sectional study was based on data collected from the ESTS database. The following were set as inclusion criteria: pulmonary lobectomy or segmentectomy for stage I primary lung cancer (according to 8th TNM edition), no previous lung surgery and no induction chemotherapy or radiotherapy. Statistical significance was examined using Mann-Whitney or 2 proportions Z tests. RESULTS: Among 63 542 patients enrolled in the ESTS database (2007-2018), 17 692 met the inclusion criteria: 15 845 patients received lobectomy and 1847 segmentectomy. Video-assisted thoracic surgery (VATS) lobectomy and VATS segmentectomy were the 27.8% and 31.9% of the procedures, respectively. Lobectomy group was significantly younger and had a lower American Society of Anaesthesiology (ASA) score, lower comorbidities prevalence and better respiratory function. The segmentectomy group had lower complications rate (25.6% vs 33.8%). When considering only the last 5 years, ASA score was similar between the 2 groups, although pulmonary function remained significantly lower in the segmentectomy group. CONCLUSIONS: According to the ESTS database, segmentectomy was preferably offered to 'compromised' patients, with limited respiratory function, higher ASA score and relevant comorbidities. Nevertheless, the procedure showed lower complications rate and similar short-term outcomes compared to lobectomy. During the last 5 years, segmentectomy appeared to be regarded as a valid alternative, even for selected patients who could tolerate both procedures.
Delirium and encephalopathy in severe COVID-19: a cohort analysis of ICU patients
Julie Helms, Stephane Kremer, Hamid Merdji, Malika Schenck, François Séverac, Raphael Clere-Jehl, Antoine Studer, Mirjana Radosavljevic, Christine Kummerlen, Alexandra Monnier, Clotilde Boulay, Samira Fafi-Kremer, Vincent Castelain, Mickaël Ohana, Mathieu Anheim, Francis Schneider, Ferhat Meziani
Critical Care, 2020, 24 (1), ⟨10.1186/s13054-020-03200-1⟩
Article dans une revueAbstractBackground: Neurotropism of SARS-CoV-2 and its neurological manifestations have now been confirmed. We aimed at describing delirium and neurological symptoms of COVID-19 in ICU patients. Methods: We conducted a bicentric cohort study in two French ICUs of Strasbourg University Hospital. All the 150 patients referred for acute respiratory distress syndrome due to SARS-CoV-2 between March 3 and May 5, 2020, were included at their admission. Ten patients (6.7%) were excluded because they remained under neuromuscular blockers during their entire ICU stay. Neurological examination, including CAM-ICU, and cerebrospinal fluid analysis, electroencephalography, and magnetic resonance imaging (MRI) were performed in some of the patients with delirium and/or abnormal neurological examination. The primary endpoint was to describe the incidence of delirium and/or abnormal neurological examination. The secondary endpoints were to describe the characteristics of delirium, to compare the duration of invasive mechanical ventilation and ICU length of stay in patients with and without delirium and/or abnormal neurological symptoms. Results: The 140 patients were aged in median of 62 [IQR 52; 70] years old, with a median SAPSII of 49 [IQR 37; 64] points. Neurological examination was normal in 22 patients (15.7%). One hundred eighteen patients (84.3%) developed a delirium with a combination of acute attention, awareness, and cognition disturbances. Eighty-eight patients (69.3%) presented an unexpected state of agitation despite high infusion rates of sedative treatments and neuroleptics, and 89 (63.6%) patients had corticospinal tract signs. Brain MRI performed in 28 patients demonstrated enhancement of subarachnoid spaces in 17/28 patients (60.7%), intraparenchymal, predominantly white matter abnormalities in 8 patients, and perfusion abnormalities in 17/26 patients (65.4%). The 42 electroencephalograms mostly revealed unspecific abnormalities or diffuse, especially bifrontal, slow activity. Cerebrospinal fluid examination revealed inflammatory disturbances in 18/28 patients, including oligoclonal bands with mirror pattern and elevated IL-6. The CSF RT-PCR SARS-CoV-2 was positive in one patient. The delirium/neurological symptoms in COVID-19 patients were responsible for longer mechanical ventilation compared to the patients without delirium/neurological symptoms. Delirium/neurological symptoms could be secondary to systemic inflammatory reaction to SARS-CoV-2. Conclusions and relevance: Delirium/neurological symptoms in COVID-19 patients are a major issue in ICUs, especially in the context of insufficient human and material resources.
Atypical hemolytic and uremic syndrome due to C3 mutation in pancreatic islet transplantation: a case report
Thibault Bahougne, Jérome Olagne, Marion Munch, Laura Braun-Parvez, Marie-Pierrette Chenard, Véronique Frémeaux-Bacchi, Sophie Caillard, Philippe Baltzinger, Michel Greget, Laurence Kessler, Bruno Moulin
BMC Nephrology, 2020, 21 (1), pp.405. ⟨10.1186/s12882-020-02062-7⟩
Article dans une revueAbstractBackground: We here report on the first observation of a C3 mutation that is related to atypical hemolytic and uremic syndrome (aHUS), which occurred in a pancreatic islet transplant patient. Immunosuppressive treatments, such as calcineurin inhibitors, have been linked to undesirable effects like nephrotoxicity. Case presentation: A 40-year-old man with brittle diabetes, who was included in the TRIMECO trial, became insulin-independent 2 months after pancreatic islet transplantation. About 15 months after islet transplantation, the patient exhibited acute kidney injury due to aHUS. Despite plasma exchange and eculizumab treatment, the patient developed end-stage renal disease. A genetic workup identified a missense variant (p.R592Q) in the C3 gene. In vitro, this C3 variant had defective Factor I proteolytic activity with membrane proteins as cofactor proteins, which was thus classified as pathogenic. About 1 year after the aHUS episode, kidney transplantation was carried out under the protection of the specific anti-C5 monoclonal antibody eculizumab. The patient had normal kidney function, with preserved pancreatic islet function 4 years later. Conclusions: Pancreatic islet transplantation could have triggered this aHUS episode, but this link needs to be clarified. Although prophylactic eculizumab maintains kidney allograft function, its efficacy still needs to be studied in larger populations.
Integrin and autocrine IGF2-pathways control fasting insulin secretion in β-cells
Caroline Arous, Maria Luisa Mizgier, Katharina Rickenbach, Michel Pinget, Karim Bouzakri, Bernhard Wehrle-Haller
Journal of Biological Chemistry, 2020, 295 (49), pp.16510-16528. ⟨10.1074/jbc.RA120.012957⟩
Article dans une revueEvaluation of the performance of SARS-CoV-2 serological tools and their positioning in COVID-19 diagnostic strategies
Aurelie Velay, Floriane Gallais, Ilies Benotmane, Marie Josée Wendling, François Danion, Olivier Collange, Jérôme de Sèze, Catherine Schmidt-Mutter, Francis Schneider, Pascal Bilbault, Ferhat Meziani, Samira Fafi-Kremer
Diagnostic Microbiology and Infectious Disease, 2020, 98 (4), pp.115181. ⟨10.1016/j.diagmicrobio.2020.115181⟩
Article dans une revueAbstractRapid and accurate diagnosis is crucial for successful outbreak containment. During the current coronavirus disease 2019 (COVID-19) public health emergency, the gold standard for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection diagnosis is the detection of viral RNA. Additional diagnostic methods õenabling the detection of current or past SARS-CoV-2 infection would be highly beneficial. We assessed 2 immunochromatographic lateral flow assays (LFA-1, LFA-2) and 2 enzyme-linked immunosorbent assay kits (IgA/IgG ELISA-1, IgM/IgG ELISA-2) using 325 samples: serum samples from polymerase chain reaction-confirmed COVID-19 hospitalized patients (n = 55) and healthcare workers (n = 143) and 127 samples from negative controls. Diagnostic performances were assessed according to days after symptom onset (dso) and the antigenic format used by manufacturers. Clinical sensitivities varied greatly among the assays, showing poor mutual agreement. After 15 dso, ELISA-1 (Euroimmun) and LFA-1 (Biosynex) combining IgM and IgG detection showed the best performances. A thorough selection of serological assays for the detection of ongoing or past infections is advisable.
A therapeutic oxygen carrier isolated from Arenicola marina decreased P. gingivalis induced inflammation and tissue destruction
Céline Stutz, Fareeha Batool, Marion Strub, Sabine Kuchler-Bopp, Nadia Benkirane-Jessel, Olivier Huck, Catherine Petit, Eric Delpy, Franck Zal, Elisabeth Leize-Zal
Scientific Reports, 2020, 10 (1), pp.14745. ⟨10.1038/s41598-020-71593-8⟩
Article dans une revueAbstractAbstract The control of inflammation and infection is crucial for periodontal wound healing and regeneration. M101, an oxygen carrier derived from Arenicola marina, was tested for its anti-inflammatory and anti-infectious potential based on its anti-oxidative and tissue oxygenation properties. In vitro, no cytotoxicity was observed in oral epithelial cells (EC) treated with M101. M101 (1 g/L) reduced significantly the gene expression of pro-inflammatory markers such as TNF-α, NF-κΒ and RANKL in P. gingivalis -LPS stimulated and P. gingivalis -infected EC. The proteome array revealed significant down-regulation of pro-inflammatory cytokines (IL-1β and IL-8) and chemokine ligands (RANTES and IP-10), and upregulation of pro-healing mediators (PDGF-BB, TGF-β1, IL-10, IL-2, IL-4, IL-11 and IL-15) and, extracellular and immune modulators (TIMP-2, M-CSF and ICAM-1). M101 significantly increased the gene expression of Resolvin-E1 receptor. Furthermore, M101 treatment reduced P. gingivalis biofilm growth over glass surface, observed with live/dead analysis and by decreased P. gingivalis 16 s rRNA expression (51.7%) ( p < 0.05) . In mice , M101 reduced the clinical abscess size (50.2%) in P. gingivalis -induced calvarial lesion concomitant with a decreased inflammatory score evaluated through histomorphometric analysis, thus, improving soft tissue and bone healing response. Therefore, M101 may be a novel therapeutic agent that could be beneficial in the management of P. gingivalis associated diseases.
Association between Covid-19 and Pulmonary Embolism (AC-19-PE study)
Òscar Miró, Pere Llorens, Alfons Aguirre, Laura Lozano, Sebastien Beaune, Mélanie Roussel, Pierrick Le Borgne, Tahar Chouihed, Yonathan Freund
Thrombosis Research, 2020, 196, pp.322-324. ⟨10.1016/j.thromres.2020.09.010⟩
Article dans une revueAbstractThe frequency of PE in COVID patients attending Spanish and French ED is around 0.7% The risk of PE in patients coming to ED is more than 7-fold higher in COVID than in non-COVID population. However, once PE is suspected and CTPA is ordered, the rate of PE diagnosis is similar in COVID and non-COVID patients.
Worldwide clinical practices in perioperative antibiotic therapy for lung transplantation
Benjamin Coiffard, Eloi Prud’homme, Sami Hraiech, Nadim Cassir, Jérôme Le Pavec, Romain Kessler, Federica Meloni, Marc Leone, Pascal Alexandre Thomas, Martine Reynaud-Gaubert, Laurent Papazian
BMC Pulmonary Medicine, 2020, 20 (1), ⟨10.1186/s12890-020-1151-9⟩
Article dans une revueSevere pulmonary arterial hypertension and massive ascites in a patient with systemic lupus erythematosus and secondary Sjogren’s syndrome
Hasibe Yucel, Olivier Vollmer, Matthieu Canuet, Irina Enache Vic, Romain Kessler, Anne-Sophie Korganow, Marianne Riou
Lupus, 2020, 30 (3), pp.510-513. ⟨10.1177/0961203320976982⟩
Article dans une revueAbstractBackground Pulmonary arterial hypertension (PAH), is a rare manifestation of systemic lupus erythematosus (SLE), characterized by pulmonary arterial remodeling leading to right ventricular failure and death. To date, optimal management of SLE-associated PAH should be clarified, especially regarding the respective places of immunosuppressants and PAH vasodilator treatments. Case report We report the case of a 48-year-old woman with SLE and secondary Sjogren syndrome, associated with severe PAH and lupus peritonitis with massive ascites, who showed a remarkable response, both for SLE flare and PAH, to a treatment combining immunosuppressants and pulmonary arterial vasodilator treatment. Conclusion This observation highlights the interest of combining immunosuppressive therapy in SLE-PAH, whose modalities in association with PAH treatments should be clarified.
Customized three-dimensionally printed mandibular external fixator
A. Louvrier, N. Sigaux, C. Meyer, M. Benassarou, J.C. Lutz
International Journal of Oral and Maxillofacial Surgery, 2020, 49, pp.1445 - 1448. ⟨10.1016/j.ijom.2020.02.012⟩
Article dans une revueAbstractThe advent of customized three-dimensional (3D) printing allows the affordable manufacturing of sophisticated medical devices, thereby providing swift and simple solutions to specific needs in modern healthcare. Meanwhile, certain devices such as industrial mandibular external fixators (EFs) have become less and less available from medical device companies because of decreased indications. What is more, their handling is often complex. The authors report, step by step, the original design and uneventful clinical use of a 3D-printed, customized mandibular EF. This device was designed together with a positioning and drilling guide for the fixation of a septic mandibular pseudarthrosis. It provided an adequate and satisfactory balance between lightness and rigidity. A simple, accurate and safe placement of the EF was achieved thanks to the skin-supported positioner and drilling guide, thereby making the procedure minimally invasive and time-efficient. To our knowledge, this is the first reported clinical use of a 3D-printed, customized mandibular EF to date. Because such 3D technology is becoming increasingly available to a large number of surgeons, the authors believe that the present innovation could become an alternative to reusable standard EFs.
Unexpected Inversion of Configuration During the Carbamoylation of 1-Azaflavaglines
Hussein Abou-Hamdan, Laurent Désaubry
SYNLETT, 2020, 31 (20), pp.2023-2026. ⟨10.1055/s-0040-1707277⟩
Article dans une revueAbstractAbstract The acylation of 8-demethoxy-1-azaflavaglines by dimethylcarbamoyl chloride was found to operate with an inversion of configuration, which is rationalized by the occurrence of styrylurea intermediate. The configuration-reversed products were not observed when the substrate was substituted by a methoxy in position 8, suggesting that an overstabilization of the carbocationic intermediate prevents this reaction to take place.
Risk and Severity of COVID-19 and ABO Blood Group in Transcatheter Aortic Valve Patients
Marion Kibler, Laurent Dietrich, Mohamad Kanso, Adrien Carmona, Benjamin Marchandot, Kensuke Matsushita, Antonin Trimaille, Cécile How-Choong, Albane Odier, Gabrielle Gennesseaux, Ophélie Schramm, Antje Reydel, Sébastien Hess, Chisato Sato, Sophie Caillard, Laurence Jesel, Olivier Morel, Patrick Ohlmann
Journal of Clinical Medicine, 2020, 9 (11), ⟨10.3390/jcm9113769⟩
Article dans une revueAbstractWhile cardiovascular disease has been associated with an increased risk of coronavirus disease 2019 (COVID-19), no studies have described its clinical course in patients with aortic stenosis who had undergone transcatheter aortic valve replacement (TAVR). Numerous observational studies have reported an association between the A blood group and an increased susceptibility to SARS-CoV-2 infection. Our objective was to investigate the frequency and clinical course of COVID-19 in a large sample of patients who had undergone TAVR and to determine the associations of the ABO blood group with disease occurrence and outcomes. Patients who had undergone TAVR between 2010 and 2019 were included in this study and followed-up through the recent COVID-19 outbreak. The occurrence and severity (hospitalization and/or death) of COVID-19 and their associations with the ABO blood group served as the main outcome measures. Of the 1125 patients who had undergone TAVR, 403 (36%) died before 1 January 2020, and 20 (1.8%) were lost to follow-up. The study sample therefore consisted of 702 patients. Of them, we identified 22 cases (3.1%) with COVID-19. Fourteen patients (63.6%) were hospitalized or died of disease. Multivariable analysis identified the A blood group (vs. others) as the only independent predictor of COVID-19 in patients who had undergone TAVR (odds ratio (OR) = 6.32; 95% confidence interval (CI) = 2.11-18.92; p = 0.001). The A blood group (vs. others; OR = 8.27; 95% CI = 1.83-37.43, p = 0.006) and a history of cancer (OR = 4.99; 95% CI = 1.64-15.27, p = 0.005) were significantly and independently associated with disease severity (hospitalization and/or death). We conclude that patients who have undergone TAVR frequently have a number of cardiovascular comorbidities that may work to increase the risk of COVID-19. The subgroup with the A blood group was especially prone to developing the disease and showed unfavorable outcomes.
Association Between Administration of Systemic Corticosteroids and Mortality Among Critically Ill Patients With COVID-19: A Meta-analysis
Jonathan A. C. Sterne, Srinivas Murthy, Janet V. Diaz, Arthur S. Slutsky, Jesús Villar, Derek C. Angus, Djillali Annane, Luciano Cesar Pontes Azevedo, Otavio Berwanger, Alexandre B. Cavalcanti, Pierre-Francois Dequin, Bin Du, Jonathan Emberson, David Fisher, Bruno Giraudeau, Anthony C. Gordon, Anders Granholm, Cameron Green, Richard Haynes, Nicholas Heming, Julian P. T. Higgins, Peter Horby, Peter Jüni, Martin J. Landray, Amelie Le Gouge, Marie Leclerc, Wei Shen Lim, Flávia R. Machado, Colin Mcarthur, Ferhat Meziani, Morten Hylander Møller, Anders Perner, Marie Warrer Petersen, Jelena Savovic, Bruno Tomazini, Viviane C. Veiga, Steve Webb, John C. Marshall
Journal of the American Medical Association, 2020, 324 (13), pp.1330-1341. ⟨10.1001/jama.2020.17023⟩
Article dans une revueAbstractImportance: Effective therapies for patients with coronavirus disease 2019 (COVID-19) are needed, and clinical trial data have demonstrated that low-dose dexamethasone reduced mortality in hospitalized patients with COVID-19 who required respiratory support. Objective: To estimate the association between administration of corticosteroids compared with usual care or placebo and 28-day all-cause mortality. Design, Setting, and Participants: Prospective meta-analysis that pooled data from 7 randomized clinical trials that evaluated the efficacy of corticosteroids in 1703 critically ill patients with COVID-19. The trials were conducted in 12 countries from February 26, 2020, to June 9, 2020, and the date of final follow-up was July 6, 2020. Pooled data were aggregated from the individual trials, overall, and in predefined subgroups. Risk of bias was assessed using the Cochrane Risk of Bias Assessment Tool. Inconsistency among trial results was assessed using the I2 statistic. The primary analysis was an inverse variance-weighted fixed-effect meta-analysis of overall mortality, with the association between the intervention and mortality quantified using odds ratios (ORs). Random-effects meta-analyses also were conducted (with the Paule-Mandel estimate of heterogeneity and the Hartung-Knapp adjustment) and an inverse variance-weighted fixed-effect analysis using risk ratios. Exposures: Patients had been randomized to receive systemic dexamethasone, hydrocortisone, or methylprednisolone (678 patients) or to receive usual care or placebo (1025 patients). Main Outcomes and Measures: The primary outcome measure was all-cause mortality at 28 days after randomization. A secondary outcome was investigator-defined serious adverse events. Results: A total of 1703 patients (median age, 60 years [interquartile range, 52-68 years]; 488 [29%] women) were included in the analysis. Risk of bias was assessed as "low" for 6 of the 7 mortality results and as "some concerns" in 1 trial because of the randomization method. Five trials reported mortality at 28 days, 1 trial at 21 days, and 1 trial at 30 days. There were 222 deaths among the 678 patients randomized to corticosteroids and 425 deaths among the 1025 patients randomized to usual care or placebo (summary OR, 0.66 [95% CI, 0.53-0.82]; P < .001 based on a fixed-effect meta-analysis). There was little inconsistency between the trial results (I2 = 15.6%; P = .31 for heterogeneity) and the summary OR was 0.70 (95% CI, 0.48-1.01; P = .053) based on the random-effects meta-analysis. The fixed-effect summary OR for the association with mortality was 0.64 (95% CI, 0.50-0.82; P < .001) for dexamethasone compared with usual care or placebo (3 trials, 1282 patients, and 527 deaths), the OR was 0.69 (95% CI, 0.43-1.12; P = .13) for hydrocortisone (3 trials, 374 patients, and 94 deaths), and the OR was 0.91 (95% CI, 0.29-2.87; P = .87) for methylprednisolone (1 trial, 47 patients, and 26 deaths). Among the 6 trials that reported serious adverse events, 64 events occurred among 354 patients randomized to corticosteroids and 80 events occurred among 342 patients randomized to usual care or placebo. Conclusions and Relevance: In this prospective meta-analysis of clinical trials of critically ill patients with COVID-19, administration of systemic corticosteroids, compared with usual care or placebo, was associated with lower 28-day all-cause mortality.
Pre-Hospital Management of Critically Ill Patients with SARS-CoV-2 Infection: A Retrospective Multicenter Study
Pierrick Le Borgne, Mathieu Oberlin, Adrien Bassand, Laure Abensur Vuillaume, Yannick Gottwalles, Marc Noizet, Stéphane Gennai, Florent Baicry, Déborah Jaeger, Nicolas Girerd, François Lefebvre, Pascal Bilbault, Tahar Chouihed
Journal of Clinical Medicine, 2020, 9 (11), pp.3744. ⟨10.3390/jcm9113744⟩
Article dans une revueAbstractIntroduction: The COVID-19 outbreak had a major impact on healthcare systems worldwide. Our study aims to describe the characteristics and therapeutic emergency mobile service (EMS) management of patients with vital distress due to COVID-19, their in-hospital care pathway and their in-hospital outcome. Methods: This retrospective and multicentric study was conducted in the six main centers of the French Greater East region, an area heavily impacted by the pandemic. All patients requiring EMS dispatch and who were admitted straight to the intensive care unit (ICU) were included. Clinical data from their pre-hospital and hospital management were retrieved. Results: We included a total of 103 patients (78.6% male, median age 68). In the initial stage, patients were in a critical condition (median oxygen saturation was 72% (60-80%)). In the field, 77.7% (CI 95%: 71.8-88.3%) were intubated. Almost half of our population (45.6%, CI 95%: 37.1-56.9%) had clinical Phenotype 1 (silent hypoxemia), while the remaining half presented Phenotype 2 (acute respiratory failure). In the ICU, a great number had ARDS (77.7%, CI 95% 71.8-88.3% with a PaO2/FiO2 < 200). In-hospital mortality was 33% (CI 95%: 24.6-43.3%). The two phenotypes showed clinical and radiological differences (respiratory rate, OR = 0.98, p = 0.02; CT scan lesion extension >50%, OR = 0.76, p < 0.03). However, no difference was found in terms of overall in-hospital mortality (OR = 1.07, p = 0.74). Conclusion: The clinical phenotypes appear to be very distinguishable in the pre-hospital field, yet no difference was found in terms of mortality. This leads us to recommend an identical management in the initial phase, despite the two distinct presentations.
Surgical reconstruction of the foramen tympanicum: What is known and how we do it
M. Pons, J.-C. Lutz, N. Sigaux, L. Tavernier, N. Graillon, A. Louvrier
Journal of Stomatology, Oral and Maxillofacial Surgery, 2020, 121 (5), pp.545-549. ⟨10.1016/j.jormas.2020.04.005⟩
Article dans une revueAbstractDefects affecting the anterior wall of the tympanal bone can result from trauma, infection, neoplasm or previous local surgery. An anatomic variation, namely the persistence of the foramen tympanicum, can also be encountered. When symptomatic, surgical reconstruction may be indicated. The aim of this study was to identify the surgical treatments of symptomatic foramen tympanicum found in the literature and detail our innovative reconstruction technique. A bibliographic research was conducted in PubMed database in March 2020, without time limitation. Papers dealing with surgical management of a foramen tympanicum were included. Data collected were the publication date, the number of patients, their age and gender, the symptoms and the surgical treatment performed. We report, in addition, the case of a symptomatic persistent foramen tympanicum in a 30-year-old man with a follow-up of 18-months. A total of 17 studies (n=23 patients) were included for analysis. The main reconstruction techniques were, in equal proportion, cartilage graft (30%) and insertion of a titanium mesh (30%). We carried out an iliac crest bone graft using a preauricular approach on a patient suffering from chronic tinnitus and fullness in the left ear resulting from a persistent foramen tympanicum, confirmed by clinical and radiological examinations. It allowed the complete resolution of symptoms and no complication such as temporomandibular ankylosis occurred. Based on the review of the literature, we believe this technique has the advantage of providing durable reconstruction thanks to osseointegration.
An unusual complication following colonoscopy
Jules Colin, Philippe Kauffmann, Florent Baicry, Pascal Bilbault, Pierrick Le Borgne
La Revue de Médecine Interne, 2020, 41 (11), pp.784-785. ⟨10.1016/j.revmed.2020.05.009⟩
Article dans une revueBrain MRI Findings in Severe COVID-19: A Retrospective Observational Study
Stéphane Kremer, François Lersy, Jérome de Sèze, Jean-Christophe Ferré, Adel Maamar, Béatrice Carsin-Nicol, Olivier Collange, Fabrice Bonneville, Gilles Adam, Guillaume Martin-Blondel, Marie Rafiq, Thomas Geeraerts, Louis Delamarre, Sylvie Grand, Alexandre Krainik, Manel Alleg, Mathieu Anheim, René Anxionnat, François-Daniel Ardellier, Seyyid Baloglu, Blanche Bapst, Joseph Benzakoun, Jérome Berge, Federico Bolognini, Grégoire Bornet, Clotilde Boulay, Grégoire Boulouis, Claire Boutet, Jean Christophe Brisset, Sophie Caillard, Sophie Carré, Pierre-Olivier Comby, Jean Marc Constans, Jean-Stéphane David, Isaure de Beaurepaire, Hubert Desal, Myriam Edjlali-Goujon, Xavier Fabre, Samira Fafi-Kremer, Philippe Feuerstein, Marie-Cécile Henry Feugeas, Géraud Forestier, Augustin Gaudemer, Yves Hansmann, Adrien Heintz, Julie Helms, Céline Hemmert, Ghazi Hmeydia, Lavinia Jager, Apolline Kazémi, Basile Kerleroux, Antoine Khalil, Audrey Lacalm, Augustin Lecler, Claire Lecocq, Nicolas Lefèbvre, Muriel Matthieu, Imen Megdiche, Paul-Michel Mertes, Julien Messié, Serge Metanbou, Nicolas Meyer, Ferhat Meziani, Véronique Mutschler, Patrick Nesser, Hélène Oesterlé, Mickael Ohana, Catherine Oppenheim, Nadya Pyatigorskaya, Frédéric Ricolfi, Suzana Saleme, Maleka Schenck, Emmanuelle Schmitt, Francis Schneider, Nathan Sebag, Yannick Talla Mba, Pierre Thouant, Thibault Willaume, François Zhu, Pierre-Emmanuel Zorn, François Cotton
Radiology, 2020, 297 (2), pp.E242-E251. ⟨10.1148/radiol.2020202222⟩
Article dans une revueAbstractBackgroundBrain MRI parenchymal signal abnormalities have been associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).PurposeTo describe the neuroimaging findings (excluding ischemic infarcts) in patients with severe coronavirus disease 2019 (COVID-19) infection.Materials and MethodsThis was a retrospective study of patients evaluated from March 23, 2020, to April 27, 2020, at 16 hospitals. Inclusion criteria were (a) positive nasopharyngeal or lower respiratory tract reverse transcriptase polymerase chain reaction assays, (b) severe COVID-19 infection defined as a requirement for hospitalization and oxygen therapy, (c) neurologic manifestations, and (d) abnormal brain MRI findings. Exclusion criteria were patients with missing or noncontributory data regarding brain MRI or brain MRI showing ischemic infarcts, cerebral venous thrombosis, or chronic lesions unrelated to the current event. Categorical data were compared using the Fisher exact test. Quantitative data were compared using the Student t test or Wilcoxon test. P < .05 represented a significant difference.ResultsThirty men (81%) and seven women (19%) met the inclusion criteria, with a mean age of 61 years ± 12 (standard deviation) (age range, 8–78 years). The most common neurologic manifestations were alteration of consciousness (27 of 37, 73%), abnormal wakefulness when sedation was stopped (15 of 37, 41%), confusion (12 of 37, 32%), and agitation (seven of 37, 19%). The most frequent MRI findings were signal abnormalities located in the medial temporal lobe in 16 of 37 patients (43%; 95% confidence interval [CI]: 27%, 59%), nonconfluent multifocal white matter hyperintense lesions seen with fluid-attenuated inversion recovery and diffusion-weighted sequences with variable enhancement, with associated hemorrhagic lesions in 11 of 37 patients (30%; 95% CI: 15%, 45%), and extensive and isolated white matter microhemorrhages in nine of 37 patients (24%; 95% CI: 10%, 38%). A majority of patients (20 of 37, 54%) had intracerebral hemorrhagic lesions with a more severe clinical presentation and a higher admission rate in intensive care units (20 of 20 patients [100%] vs 12 of 17 patients without hemorrhage [71%], P = .01) and development of the acute respiratory distress syndrome (20 of 20 patients [100%] vs 11 of 17 patients [65%], P = .005). Only one patient had SARS-CoV-2 RNA in the cerebrospinal fluid.ConclusionPatients with severe coronavirus disease 2019 and without ischemic infarcts had a wide range of neurologic manifestations that were associated with abnormal brain MRI scans. Eight distinctive neuroradiologic patterns were described.
Predictive Impact of Paravalvular Leak Assessments on Clinical Outcomes Following Transcatheter Aortic Valve Replacement
Kensuke Matsushita, Benjamin Marchandot, Marion Kibler, Antonin Trimaille, Sebastien Hess, Lelia Grunebaum, Antje Reydel, Laurence Jesel, Patrick Ohlmann, Olivier Morel
American Journal of Cardiology, 2020, 135, pp.181-182. ⟨10.1016/j.amjcard.2020.08.006⟩
Article dans une revueProhibitin, STAT3 and SH2D4A physically and functionally interact in tumor cell mitochondria
Carolin Ploeger, Thorben Huth, Raisatun Nisa Sugiyanto, Stefan Pusch, Benjamin Goeppert, Stephan Singer, Redouane Tabti, Ingrid Hausser, Peter Schirmacher, Laurent Désaubry, Stephanie Roessler
Cell Death and Disease, 2020, 11 (11), ⟨10.1038/s41419-020-03220-3⟩
Article dans une revueAbstractChromosome 8p is frequently deleted in various cancer entities and has been shown to correlate with poor patient survival. SH2D4A is located on chromosome 8p and prevents the nuclear translocation of the pro-tumorigenic transcription factor STAT3. Here, we investigated the interaction of SH2D4A and STAT3 to shed light on the noncanonical functions of STAT3 in cooperation with the tumor suppressor SH2D4A. Using an immunoprecipitation-mass spectrometry (IP-MS) approach, we identified the mitochondrial scaffold proteins prohibitin 1 (PHB1) and prohibitin 2 (PHB2) among other proteins to potentially bind to SH2D4A. Co-immunoprecipitation and proximity ligation assays confirmed direct interactions of STAT3, PHB1, and SH2D4A in situ and in vitro. In addition, cell fractionation and immunofluorescence staining revealed co-localization of these proteins with mitochondria. These interactions were selectively interrupted by the small molecule and PHB ligand FL3. Furthermore, FL3 led to a reduction of STAT3 protein levels, STAT3 transcriptional activity, and HIF1α protein stabilization upon dimethyloxalylglycine (DMOG) treatment. Besides, mitochondrial fusion and fission markers, L-OPA1, Mfn1, and FIS1, were dysregulated upon FL3 treatment. This dysregulated morphology was accompanied by significant reduction of mitochondrial respiration, thus, FL3 significantly diminished mitochondrial respirational capacity. In contrast, SH2D4A knockout increased mitochondrial respiration, whereas FL3 reversed the effect of SH2D4A knockout. The here described results indicate that the interaction of SH2D4A and PHB1 is involved in the mitochondrial function and integrity. The demonstrated interaction with STAT3, accompanied by its reduction of transcriptional activity, further suggests that SH2D4A is linking STAT3 to its mitochondrial functions, and inhibition of PHB-interaction may have therapeutic effects in tumor cells with STAT3 activation.
Thromboprophylaxis: balancing evidence and experience during the COVID-19 pandemic
Benjamin Marchandot, Antonin Trimaille, Anais Curtiaud, Kensuke Matsushita, Laurence Jesel, Olivier Morel
Journal of Thrombosis and Thrombolysis, 2020, 50 (4), pp.799-808. ⟨10.1007/s11239-020-02231-3⟩
Article dans une revueAbstractA common and potent consideration has recently entered the landscape of the novel coronavirus disease of 2019 (COVID-19): venous thromboembolism (VTE). COVID-19 has been associated to a distinctive related coagulopathy that shows unique characteristics. The research community has risen to the challenges posed by this « evolving COVID-19 coagulopathy » and has made unprecedented efforts to promptly address its distinct characteristics. In such difficult time, both national and international societies of thrombosis and hemostasis released prompt and timely responses to guide recognition and management of COVID-19-related coagulopathy. However, latest guidelines released by the international Society on Thrombosis and Haemostasis (ISTH) on May 27, 2020, followed the American College of Chest Physicians (CHEST) on June 2, 2020 showed some discrepancies regarding thromboprophylaxis use. In this forum article, we would like to offer an updated focus on thromboprophylaxis with current incidence of VTE in ICU and non-ICU patients according to recent published studies; highlight the main differences regarding ISTH and CHEST guidelines; summarize and describe which are the key ongoing RCTs testing different anticoagulation strategies in patients with COVID-19; and finally set a proposal for COVID-19 coagulopathy specific risk factors and dedicated trials.
La saturation de la structure des urgences et le rôle de l'organisation hospitalière : réflexions sur les causes et les solutions
M. Oberlin, E. Andrès, M. Behr, S. Kepka, P. Le Borgne, P. Bilbault
La Revue de Médecine Interne, 2020, 41, pp.693 - 699. ⟨10.1016/j.revmed.2020.05.023⟩
Article dans une revueAbstractEmergency Department (ED) overcrowding is a silent killer. Thus, several studies in different countries have described an increase in mortality, a decrease in the quality of care and prolonged hospital stays associated with ED overcrowding. Causes are multiple: input and in particular lack of access to lab test and imaging for general practitioners, throughput and unnecessary or time-consuming tasks, and output, in particular the availability of hospital beds for unscheduled patients. The main cause of overcrowding is waiting time for available beds in hospital wards, also known as boarding. Solutions to resolve the boarding problem are mostly organisational and require the cooperation of all department and administrative levels through efficient bed management. Elderly and polypathological patients wait longer time in ED. Internal Medicine, is the ideal specialty for these complex patients who require time for observation and evaluation. A strong partnership between the ED and the internal medicine department could help to reduce ED overcrowding by improving care pathways.
Assessment of Inflammation and Calcification in Pseudoxanthoma Elasticum Arteries and Skin with 18F-FluroDeoxyGlucose and 18F-Sodium Fluoride Positron Emission Tomography/Computed Tomography Imaging: The GOCAPXE Trial
Loukman Omarjee, P.-J. Mention, Anne Janin, Gilles Kauffenstein, Estelle Le Pabic, Olivier Meilhac, Simon J. Blanchard, Nastassia Navasiolava, Georges Lefthériotis, Olivier Couturier, Pascale Jeannin, Franck Lacoeuille, Ludovic Martin
Journal of Clinical Medicine, 2020, 9 (11), pp.3448. ⟨10.3390/jcm9113448⟩
Article dans une revueAbstractBACKGROUND: Pseudoxanthoma elasticum (PXE) is an inherited metabolic disease characterized by elastic fiber fragmentation and ectopic calcification. There is growing evidence that vascular calcification is associated with inflammatory status and is enhanced by inflammatory cytokines. Since PXE has never been considered as an inflammatory condition, no incidence of chronic inflammation leading to calcification in PXE has been reported and should be investigated. In atherosclerosis and aortic stenosis, positron emission tomography combined with computed tomographic (PET-CT) imaging has demonstrated a correlation between inflammation and calcification. The purpose of this study was to assess skin/artery inflammation and calcification in PXE patients. Methods: 18F-FluroDeoxyGlucose (18F-FDG) and 18F-Sodium Fluoride (18F-NaF) PET-CT, CT-imaging and Pulse wave velocity (PWV) were used to determine skin/vascular inflammation, tissue calcification, arterial calcium score (CS) and stiffness, respectively. In addition, inorganic pyrophosphate, high-sensitive C-reactive protein and cytokines plasma levels were monitored.RESULTS: In 23 PXE patients, assessment of inflammation revealed significant 18F-FDG uptake in diseased skin areas contrary to normal regions, and exclusively in the proximal aorta contrary to the popliteal arteries. There was no correlation between 18F-FDG uptake and PWV in the aortic wall. Assessment of calcification demonstrated significant 18F-NaF uptake in diseased skin regions and in the proximal aorta and femoral arteries. 18F-NaF wall uptake correlated with CS in the femoral arteries, and aortic wall PWV. Multivariate analysis indicated that aortic wall 18F-NaF uptake is associated with diastolic blood pressure. There was no significant correlation between 18F-FDG and 18F-NaF uptake in any of the artery walls.CONCLUSION: In the present cross-sectional study, inflammation and calcification were not correlated. PXE would appear to more closely resemble a chronic disease model of ectopic calcification than an inflammatory condition. To assess early ectopic calcification in PXE patients, 18F-NaF-PET-CT may be more relevant than CT imaging. It potentially constitutes a biomarker for disease-modifying anti-calcifying drug assessment in PXE.
Life-threatening arrhythmias in anterior ST-segment elevation myocardial infarction patients treated by percutaneous coronary intervention: adverse impact of morphine
François Sauer, Laurence Jesel, Benjamin Marchandot, François Derimay, Thomas Bochaton, Camille Amaz, François Roubille, Guillaume Cayla, Gilles Rioufol, David Garcia-Dorado, Marc Claeys, Denis Angoulvant, Eric Bonnefoy-Cudraz, Patrice Guérin, Annie Trinh, Kensuke Matsushita, Patrick Ohlmann, Claire Jossan, Nathan Mewton, Michel Ovize, Olivier Morel
European Heart Journal: Acute Cardiovascular Care, 2020, ⟨10.1093/ehjacc/zuaa005⟩
Article dans une revueAbstractAims: Important controversies remain concerning the determinants of life-threatening arrhythmias during ST-segment elevation myocardial infarction (STEMI) and their impact on late adverse events. This study sought to investigate which factors might facilitate ventricular tachycardia (VT) and ventricular fibrillation (VF), in a homogeneous population of anterior STEMI patients defined by abrupt left anterior descending coronary artery (LAD) occlusion and no collateral flow. Methods and results: The 967 patients, who entered into the CIRCUS (Does Cyclosporine ImpRove Clinical oUtcome in ST elevation myocardial infarction patients) study, were assessed for further analysis. Acute VT/VF was defined as VT (run of tachycardia >30 s either self-terminated or requiring electrical/pharmacological cardioversion) or VF documented by electrocardiogram or cardiac monitoring, during transportation to the cathlab or initial hospitalization. VT/VF was documented in 136 patients (14.1%). Patients with VT/VF were younger and had shorter time from symptom onset to hospital arrival. Site of LAD occlusion, thrombus burden, area at risk, pre-percutaneous coronary intervention Thrombolysis in Myocardial Infarction flow, and ST-segment resolution were similar to that of patients without VT/VF. There was no impact of VT/VF on left ventricular remodelling or clinical outcomes. By multivariate analysis, the use of morphine (odds ratio 1.71; 95% confidence interval (1.13-2.60); P = 0.012) was the sole independent predictor of VT/VF occurrence. Conclusions: In STEMI patients with LAD occlusion, our findings support the view that morphine could favour severe ventricular arrhythmias.
Quercetin potentializes the respective cytotoxic activity of gemcitabine or doxorubicin on 3D culture of AsPC-1 or HepG2 cells, through the inhibition of HIF-1α and MDR1
Sarah Hassan, Jean Peluso, Sandra Chalhoub, Ysia Idoux-Gillet, Nadia Benkirane-Jessel, Natacha Rochel, Guy Fuhrmann, Genevieve Ubeaud-Sequier
PLoS ONE, 2020, 15 (10), pp.e0240676. ⟨10.1371/journal.pone.0240676⟩
Article dans une revueAbstractThe impact of cancer on lifespan is significantly increasing worldwide. Enhanced activity of drug efflux pumps and the incidences of the tumor microenvironment such as the apparition of a hypoxic gradient inside of the bulk tumor, are the major causes of chemotherapy failure. For instance, expression of Hypoxia-inducible factor (HIF-1α) has been associated with metastasis, resistance to chemotherapy and reduced survival rate. One of the current challenges to fight against cancer is therefore to find new molecules with therapeutic potential that could overcome this chemoresistance. In the present study, we focused on the bioactive plant flavonoid quercetin, which has strong antioxidant and anti-proliferative properties. We examined the efficacy of combined treatments of quercetin and the anti-cancer drugs gemcitabine and doxorubicin, known to specifically act on human pancreatic and hepatic cancer cells, respectively. Moreover, our study aimed to investigate more in-depth the implication of the multidrug transporter MDR1 and HIF-1α n chemoresistance and if quercetin could act on the activity of the drug efflux pumps and the hypoxia-associated effects. We observed that the anti-cancer drugs, were more effective when administered in combination with quercetin, as shown by an increased percentage of dead cells up to 60% in both 2D and 3D cultures. In addition, our results indicated that the combination of anti-cancer drugs and quercetin down-regulated the expression of HIF-1α and increased the expression levels of the regulator of apoptosis p53. Moreover, we observed that quercetin could inhibit the efflux activity of MDR1. Finally, our in vitro study suggests that the efficiency of the chemotherapeutic activity of known anti-cancer drugs might be significantly increased upon combination with quercetin. This flavonoid may therefore be a promising pharmacological agent for novel combination therapy since it potentializes the cytotoxic activity of gemcitabine and doxorubicin on by targeting the chemoresistance developed by the pancreatic and liver cancer cells respectively.
Effect of Hydrocortisone on 21-Day Mortality or Respiratory Support Among Critically Ill Patients With COVID-19
Pierre-François Dequin, Nicholas Heming, Ferhat Meziani, Gaëtan Plantefève, Guillaume Voiriot, Julio Badié, Bruno François, Cécile Aubron, Jean-Damien Ricard, Stephan Ehrmann, Youenn Jouan, Antoine Guillon, Marie Leclerc, Carine Coffre, Hélène Bourgoin, Céline Lengellé, Caroline Caille-Fénérol, Elsa Tavernier, Sarah Zohar, Bruno Giraudeau, Djillali Annane, Amélie Le Gouge
JAMA Cardiology, 2020, 324 (13), pp.1298. ⟨10.1001/jama.2020.16761⟩
Article dans une revueAbstractImportance: Coronavirus disease 2019 (COVID-19) is associated with severe lung damage. Corticosteroids are a possible therapeutic option.Objective: To determine the effect of hydrocortisone on treatment failure on day 21 in critically ill patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and acute respiratory failure.Design, setting, and participants: Multicenter randomized double-blind sequential trial conducted in France, with interim analyses planned every 50 patients. Patients admitted to the intensive care unit (ICU) for COVID-19-related acute respiratory failure were enrolled from March 7 to June 1, 2020, with last follow-up on June 29, 2020. The study intended to enroll 290 patients but was stopped early following the recommendation of the data and safety monitoring board.Interventions: Patients were randomized to receive low-dose hydrocortisone (n = 76) or placebo (n = 73).Main outcomes and measures: The primary outcome, treatment failure on day 21, was defined as death or persistent dependency on mechanical ventilation or high-flow oxygen therapy. Prespecified secondary outcomes included the need for tracheal intubation (among patients not intubated at baseline); cumulative incidences (until day 21) of prone position sessions, extracorporeal membrane oxygenation, and inhaled nitric oxide; Pao2:Fio2 ratio measured daily from day 1 to day 7, then on days 14 and 21; and the proportion of patients with secondary infections during their ICU stay.Results: The study was stopped after 149 patients (mean age, 62.2 years; 30.2% women; 81.2% mechanically ventilated) were enrolled. One hundred forty-eight patients (99.3%) completed the study, and there were 69 treatment failure events, including 11 deaths in the hydrocortisone group and 20 deaths in the placebo group. The primary outcome, treatment failure on day 21, occurred in 32 of 76 patients (42.1%) in the hydrocortisone group compared with 37 of 73 (50.7%) in the placebo group (difference of proportions, -8.6% [95.48% CI, -24.9% to 7.7%]; P = .29). Of the 4 prespecified secondary outcomes, none showed a significant difference. No serious adverse events were related to the study treatment.Conclusions and relevance: In this study of critically ill patients with COVID-19 and acute respiratory failure, low-dose hydrocortisone, compared with placebo, did not significantly reduce treatment failure (defined as death or persistent respiratory support) at day 21. However, the study was stopped early and likely was underpowered to find a statistically and clinically important difference in the primary outcome.Trial registration: ClinicalTrials.gov Identifier: NCT02517489.
Flavaglines as natural products targeting eIF4A and prohibitins: From traditional Chinese medicine to antiviral activity against coronaviruses
Canan G Nebigil, Christiane Moog, Stéphan Vagner, Nadia Benkirane-Jessel, Duncan R Smith, Laurent Désaubry
European Journal of Medicinal Chemistry, 2020, 203, pp.112653. ⟨10.1016/j.ejmech.2020.112653⟩
Article dans une revueAbstractFlavaglines are cyclopenta[b]benzofurans found in plants of the genus Aglaia, several species of which are used in traditional Chinese medicine. These compounds target the initiation factor of translation eIF4A and the scaffold proteins prohibitins-1 and 2 (PHB1/2) to exert various pharmacological activities, including antiviral effects against several types of viruses, including coronaviruses. This review is focused on the antiviral effects of flavaglines and their therapeutic potential against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
COVID-19 and Inflammatory Bowel Disease: Questions on Incidence, Severity, and Impact of Treatment?
Bénédicte Caron, Yves Arondel, Jean-Marie Reimund
Clinical Gastroenterology and Hepatology, 2020, 18 (11), pp.2637-2638. ⟨10.1016/j.cgh.2020.06.002⟩
Article dans une revueProkineticin signaling in heart-brain developmental axis: Therapeutic options for heart and brain injuries
Laurent Désaubry, Anumantha G Kanthasamy, Canan G Nebigil
Pharmacological Research, 2020, 160, pp.105190. ⟨10.1016/j.phrs.2020.105190⟩
Article dans une revueAbstractHeart and brain development occur simultaneously during the embryogenesis, and both organ development and injuries are interconnected. Early neuronal and cardiac injuries share mutual cellular events, such as angiogenesis and plasticity that could either delay disease progression or, in the long run, result in detrimental health effects. For this reason, the common mechanisms provide a new and previously undervalued window of opportunity for intervention. Because angiogenesis, cardiogenesis and neurogenesis are essential for the development and regeneration of the heart and brain, we discuss therein the role of prokineticin as an angiogenic neuropeptide in heart-brain development and injuries. We focus on the role of prokineticin signaling and the effect of drugs targeting prokineticin receptors in neuroprotection and cardioprotection, with a special emphasis on heart failure, neurodegenerativParkinson's disease and ischemic heart and brain injuries. Indeed, prokineticin triggers common pro-survival signaling pathway in heart and brain. Our review aims at stimulating researchers and clinicians in neurocardiology to focus on the role of prokineticin signaling in the reciprocal interaction between heart and brain. We hope to facilitate the discovery of new treatment strategies, acting in both heart and brain degenerative diseases.
18F-FDG PET/CT Imaging of Peritoneal Fibrosis Mimicking Persistent Metastatic Ovarian Carcinoma
Benjamin Leroy-Freschini, Véronique Lindner, Thomas Boisramé, Martin Demarchi
European Journal of Nuclear Medicine and Molecular Imaging, 2020, 54 (5), pp.249-251. ⟨10.1007/s13139-020-00656-5⟩
Article dans une revueOsteochondral repair combining therapeutics implant with mesenchymal stem cells spheroids
Henri Favreau, Luc Pijnenburg, Joseph Seitlinger, Florence Fioretti, Laetitia Keller, Dominique Scipioni, Hans Adriaensen, Sabine Kuchler-Bopp, Matthieu Ehlinger, Didier Mainard, Phillippe Rosset, Guoqiang Hua, Luca Gentile, Nadia Benkirane-Jessel
Nanomedicine: Nanotechnology, Biology and Medicine, 2020, 29, pp.102253. ⟨10.1016/j.nano.2020.102253⟩
Article dans une revueAbstractFunctional articular cartilage regeneration remains challenging, and it is essential to restore focal osteochondral defects and prevent secondary osteoarthritis. Combining autologous stem cells with therapeutic medical device, we developed a bi-compartmented implant that could promote both articular cartilage and subchondral bone regeneration. The first compartment based on therapeutic collagen associated with bone morphogenetic protein 2, provides structural support and promotes subchondral bone regeneration. The second compartment contains bone marrow-derived mesenchymal stem cell spheroids to support the regeneration of the articular cartilage. Six-month post-implantation, the regenerated articular cartilage surface was 3 times larger than that of untreated animals, and the regeneration of the osteochondral tissue occurred during the formation of hyaline-like cartilage. Our results demonstrate the positive impact of this combined advanced therapy medicinal product, meeting the needs of promising osteochondral regeneration in critical size articular defects in a large animal model combining not only therapeutic implant but also stem cells.
Neurologic and neuroimaging findings in patients with COVID-19: A retrospective multicenter study
Stéphane Kremer, François Lersy, Mathieu Anheim, Hamid Merdji, Maleka Schenck, Hélène Oesterlé, Federico Bolognini, Julien Messie, Antoine Khalil, Augustin Gaudemer, Sophie Carré, Manel Alleg, Claire Lecocq, Emmanuelle Schmitt, René Anxionnat, François Zhu, Lavinia Jager, Patrick Nesser, Yannick Talla Mba, Ghazi Hmeydia, Joseph Benzakoun, Catherine Oppenheim, Jean-Christophe Ferré, Adel Maamar, Béatrice Carsin-Nicol, Pierre-Olivier Comby, Frédéric Ricolfi, Pierre Thouant, Claire Boutet, Xavier Fabre, Géraud Forestier, Isaure de Beaurepaire, Grégoire Bornet, Hubert Desal, Grégoire Boulouis, Jérome Berge, Apolline Kazémi, Nadya Pyatigorskaya, Augustin Lecler, Suzana Saleme, Myriam Edjlali-Goujon, Basile Kerleroux, Jean-Marc Constans, Pierre-Emmanuel Zorn, Muriel Mathieu, Seyyid Baloglu, François-Daniel Ardellier, Thibault Willaume, Jean-Christophe Brisset, Sophie Caillard, Olivier Collange, Paul Michel Mertes, Francis Schneider, Samira Fafi-Kremer, Mickael Ohana, Ferhat Meziani, Nicolas Meyer, Julie Helms, François Cotton
Neurology, 2020, 95 (13), pp.e1868-e1882. ⟨10.1212/WNL.0000000000010112⟩
Article dans une revueAbstractObjective To describe neuroimaging findings and to report the epidemiologic and clinical characteristics of patients with coronavirus disease 2019 (COVID-19) with neurologic manifestations. Methods In this retrospective multicenter study (11 hospitals), we included 64 patients with confirmed COVID-19 with neurologic manifestations who underwent a brain MRI. Results The cohort included 43 men (67%) and 21 women (33%); their median age was 66 (range 20–92) years. Thirty-six (56%) brain MRIs were considered abnormal, possibly related to severe acute respiratory syndrome coronavirus. Ischemic strokes (27%), leptomeningeal enhancement (17%), and encephalitis (13%) were the most frequent neuroimaging findings. Confusion (53%) was the most common neurologic manifestation, followed by impaired consciousness (39%), presence of clinical signs of corticospinal tract involvement (31%), agitation (31%), and headache (16%). The profile of patients experiencing ischemic stroke was different from that of other patients with abnormal brain imaging: the former less frequently had acute respiratory distress syndrome ( p = 0.006) and more frequently had corticospinal tract signs ( p = 0.02). Patients with encephalitis were younger ( p = 0.007), whereas agitation was more frequent for patients with leptomeningeal enhancement ( p = 0.009). Conclusions Patients with COVID-19 may develop a wide range of neurologic symptoms, which can be associated with severe and fatal complications such as ischemic stroke or encephalitis. In terms of meningoencephalitis involvement, even if a direct effect of the virus cannot be excluded, the pathophysiology seems to involve an immune or inflammatory process given the presence of signs of inflammation in both CSF and neuroimaging but the lack of virus in CSF. ClinicalTrials.gov identifier NCT04368390.
Periprocedural Predictors of New-Onset Conduction Abnormalities After Transcatheter Aortic Valve Replacement
Kensuke Matsushita, Mohamad Kanso, Mickael Ohana, Benjamin Marchandot, Marion Kibler, Joe Heger, Marilou Peillex, Antonin Trimaille, Sébastien Hess, Lelia Grunebaum, Antje Reydel, Fabien de Poli, Pierre Leddet, Jérôme Rischner, Philoktemon Plastaras, Laurence Jesel, Olivier Morel, Patrick Ohlmann
Circulation Journal, 2020, 84 (10), pp.1875-1883. ⟨10.1253/circj.CJ-20-0257⟩
Article dans une revueAbstractBackground: New-onset conduction abnormalities (CAs) following transcatheter aortic valve replacement (TAVR) are associated with hospital rehospitalization and long-term mortality, but available predictors are sparse. This study sought to determine clinical predictors of new-onset left bundle branch block (LBBB) and new permanent pacemaker (PPM) implantation in patients undergoing TAVR. Methods and Results: We enrolled 290 patients who received SAPIEN 3 (Edwards Lifesciences, Irvine, CA, USA; n=217) or Evolut R (Medtronic, Minneapolis, MN, USA; n=73) from a prospective registry at Nouvel Hôpital Civil, Strasbourg, France between September 2014 and February 2018. Of 242 patients without pre-existing LBBB, 114 (47%) experienced new-onset LBBB and/or new PPM implantation. A difference between membranous septal length and implantation depth (∆MSID) was the only predictor of CAs for both types of valves. In the multivariate analysis, PR interval and ∆MSID remained as sole predictors of CAs. The risk for adverse clinical events, including all-cause death, myocardial infarction, stroke, and heart failure hospitalization, was higher for patients with CAs as compared with patients without CAs (hazard ratio: 2.10; 95% confidence interval: 1.26 to 3.57; P=0.004). Conclusions: Computed tomography assessment of membranous septal anatomy and implantation depth predicted CAs after TAVR with new-generation valves. Future studies are required to identify whether adjustment of the implantation depth can reduce the risk of CAs and adverse clinical outcomes.
Accessing 1,8‐Naphthyridones by Metal‐Free Regioselective Amination of Pyridine N ‐oxides/Acid‐Mediated Cyclization
Lianbo Zhao, Lei Hao, Yupeng Fu, Yan Cheng, Guojun Pan, Laurent Désaubry, Peng Yu, Dong Wang
Advanced Synthesis and Catalysis, 2020, 362 (18), pp.3841-3845. ⟨10.1002/adsc.202000769⟩
Article dans une revueAbstractA concise and practical method for the metal-free synthesis of 1,8-naphthyridones is described using a two-step approach involving regioselective amination of pyridine N-oxides and acid-mediated cyclization. This is the first synthesis of 1,8-naphthyridones utilizing easily accessible pyridine N-oxides as substrates. Compared to previous reports, this method benefits from simple operation, easy access to starting materials, and a wide substrate scope, providing a variety of novel 1,8-naphthyridones.
A novel treatment modality for myogenous temporomandibular disorders using aromatherapy massage with lavender oil: A randomized controlled clinical trial
Merve Benli, Jessica Olson, Olivier Huck, Mutlu Özcan
Cranio -Chattanooga Tn-, 2020, 41 (1), pp.48-58. ⟨10.1080/08869634.2020.1819067⟩
Article dans une revueAbstractObjective: To investigate the effect of aromatherapy massage on pain intensity and maximal mouth opening (MMO) in patients with myogenous TMD. Methods: Ninety-one patients were randomly assigned to three groups: Group L (aromatherapy massage with lavender oil, test), group P (massage with sweet almond oil, placebo), and group C (control). Participants were evaluated at T0 (before the intervention), T1 (immediately after the intervention), and T2 (2-month follow-up). Data were analyzed using one-way ANOVA, Tukey’s HSD, and Kruskal-Wallis tests. Results: For T1 and T2, group L showed the greatest MMO values (48.01 ± 0.85 mm; 45.67 ± 0.84 mm), while group C exhibited the lowest values (39.13 ± 0.49 mm; 39.66 ± 0.82 mm) (p < 0.001). For VAS, group L revealed the lowest pain values at T1 (2) and T2 (2) (p < 0.001). Discussion: Aromatherapy massage with lavender oil was effective in the management of painful TMD conditions and limited mouth opening.
The Synthetic Small Molecule FL3 Combats Intestinal Tumorigenesis via Axin1-Mediated Inhibition of Wnt/β-Catenin Signaling
Dakota N Jackson, Kibrom M Alula, Yaritza Delgado-Deida, Redouane Tabti, Kevin Turner, Xuan Wang, K. Venuprasad, Rhonda F Souza, Laurent Désaubry, Arianne L Theiss
Cancer Research, 2020, 80 (17), pp.3519-3529. ⟨10.1158/0008-5472.CAN-20-0216⟩
Article dans une revueOutcomes of Patients With Advanced NSCLC From the Intergroupe Francophone de Cancérologie Thoracique Biomarkers France Study by KRAS Mutation Subtypes
Anne-Marie Ruppert, Michèle Beau-Faller, Didier Debieuvre, L'Houcine Ouafik, Virginie Westeel, Isabelle Rouquette, Julien Mazières, Pierre-Paul Bringuier, Isabelle Monnet, Fabienne Escande, Charles Ricordel, Jean-Philippe Merlio, Henri Janicot, Antoinette Lemoine, Pascal Foucher, Michel Poudenx, Franck Morin, Alexandra Langlais, Pierre-Jean Souquet, Fabrice Barlesi, Marie Wislez
JTO Clinical and Research Reports, 2020, 1 (3), pp.100052. ⟨10.1016/j.jtocrr.2020.100052⟩
Article dans une revueAbstractIntroduction - Methods - In the Biomarkers France study, 4894 mutations (26.2%) were detected in 4634 patients from the 17,664 enrolled patients with NSCLC. Survival and treatment data on noncurative stage III to IV NSCLC were available for 901 patients. First- and second-line treatment effects on progression-free survival and overall survival were analyzed according to the mutations subtype. Results - Over 95% of patients with mutation were smokers or former smokers who were white (99.5%), presenting with adenocarcinoma (82.5%). The most common mutation subtype was G12C (374 patients; 41.5%), followed by G12V (168; 18.6%), G12D (131; 14.5%), G12A (62; 6.9%), G13C (45; 5.0%), G13D (31; 3.4%), and others (10; 1%). Approximately 21% of patients had transition mutation and 68.2% had a transversion mutation. G12D and transition mutations were predominant in never-smokers. The median overall survival for patients with -mutated NSCLC was 8.1 months (95% confidence interval [CI]: 7.5-9.5), without any differences according to the different subtypes mutations. The median progression-free survival was 4.6 months (95% CI: 4.2-5.1) for first-line treatment and 4.8 months (95% CI: 4.3-6.8) for second-line treatment, without any differences according to the different subtypes mutations. Conclusions
Ruthenium tris(2,2′-bipyridyl) complex encapsulated in nanosized faujasite zeolite as intracellular localization tracer
Sarah Komaty, Hayriye Özçelik, Moussa Zaarour, Aurélie Ferré, Samuel Valable, Svetlana Mintova
Journal of Colloid and Interface Science, 2020, 581 (Part B), pp.919-927. ⟨10.1016/j.jcis.2020.08.117⟩
Article dans une revueAbstractDesigning zeolites for medical applications is a challenging task that requires introducing new functionalities without altering the intrinsic properties such as morphology, crystallinity, colloidal stability, surface charge, and porosity. Herein, we present the encapsulation of luminescent ruthenium-tris(2,2′-bipyridyl) complex in faujasite (FAU) zeolite nanocrystals (Ru(bpy)3-FAU) and their use as an intracellular localization tracer. Upon exciting the Ru(bpy)3-FAU zeolite at 450 nm, the sample gives rise to an orange-red emission at 628 nm, thus permitting its use for cellular imaging and localization of the zeolite nanoparticles. The nanosized Ru(bpy)3-FAU zeolite is characterized in terms of size, charge, crystallinity, morphology, porosity, thermal stability, and sorption capacity. The potential toxicity of Ru(bpy)3-FAU on U251-MG glioblastoma cells was evaluated. A safe concentration (50-100 µg/ml) for the Ru(bpy)3-FAU zeolite is identified. The luminescent properties of the ruthenium complex confined in the zeolite nanocrystals allow their localization in the U251-MG cells with a main accumulation in the cytoplasm. The Ru(bpy)3-FAU nanosized zeolite is a potential candidate for biological applications for being stable, safe, capable of loading respiratory gases, and easily probed in the cells owing to its luminescent properties.
Effect of one-year lumacaftor–ivacaftor treatment on glucose tolerance abnormalities in cystic fibrosis patients
Bastien Misgault, Eva Chatron, Quitterie Reynaud, Sandrine Touzet, Michel Abely, Laurent Melly, Stéphane Dominique, Françoise Troussier, Olivia Ronsin-Pradel, Michèle Gerardin, Julie Mankikian, Laure Cosson, Raphael Chiron, Leila Bounyar, Michel Porzio, Isabelle Durieu, Laurence Weiss, Romain Kessler, Laurence Kessler
Journal of Cystic Fibrosis, 2020, 19 (5), pp.712-716. ⟨10.1016/j.jcf.2020.03.002⟩
Article dans une revueAcute Pulmonary Embolism in Patients with COVID-19 at CT Angiography and Relationship to D-Dimer Levels
Ian Léonard-Lorant, Xavier Delabranche, François Séverac, Julie Helms, Coralie Pauzet, Olivier Collange, Francis Schneider, Aïssam Labani, Pascal Bilbault, Sébastien Molière, Pierre Leyendecker, Catherine Roy, Mickaël Ohana
Radiology, 2020, 296 (3), pp.E189-E191. ⟨10.1148/radiol.2020201561⟩
Article dans une revueAbstractReports of acute pulmonary embolism associated with coronavirus disease 2019 (COVID-19) have emerged in the literature. For example, Chen et al (1) described 25 pulmonary CT angiographic examinations from 1008 patients with COVID-19; 10 were positive for pulmonary embolism, mostly as segmental or subsegmental acute pulmonary embolism. In addition, d-dimer levels have been reported as elevated in patients with COVID-19 (2,3), with the suggestion of an independent association between the severity of the disease and the level of d-dimer (4). The purpose of this report is to describe the rate of pulmonary embolus in patients classified as having COVID-19 infection who underwent chest CT at a tertiary referral center.
Venous thromboembolism in non-critically ill patients with COVID-19 infection
Antonin Trimaille, Anaïs Curtiaud, Benjamin Marchandot, Kensuke Matsushita, Chisato Sato, Ian Leonard-Lorant, Laurent Sattler, Lelia Grunebaum, Mickaël Ohana, Jean-Jacques von Hunolstein, Emmanuel Andres, Bernard Goichot, François Danion, Charlotte Kaeuffer, Vincent Poindron, Patrick Ohlmann, Laurence Jesel, Olivier Morel
Thrombosis Research, 2020, 193, pp.166-169. ⟨10.1016/j.thromres.2020.07.033⟩
Article dans une revueAcute adrenal infarction as an incidental CT finding and a potential prognosis factor in severe SARS-CoV-2 infection: a retrospective cohort analysis on 219 patients
Pierre Leyendecker, Sébastien Ritter, Marianne Riou, Antoine Wackenthaler, Ferhat Meziani, Catherine Roy, Mickaël Ohana
European Radiology, 2020, 31, pp.895-900. ⟨10.1007/s00330-020-07226-5⟩
Article dans une revueEditorial: Emerging Challenges of Cardiovascular and Metabolic Dysfunctions in Cardio-Oncology: From Bench to Bedside
Canan G Nebigil, Michael Chan, Tienush Rassaf
Frontiers in Cardiovascular Medicine, 2020, 7, ⟨10.3389/fcvm.2020.00148⟩
Article dans une revueBlood glucose levels and COVID-19. Reply to Sardu C, D’Onofrio N, Balestrieri ML et al [letter] and Lepper PM, Bals R, Jüni P et al [letter]
Bertrand Cariou, Samy Hadjadj, Matthieu Wargny, Matthieu Pichelin, Abdallah Al-Salameh, Ingrid Allix, Coralie Amadou, Gwénaëlle Arnault, Florence Baudoux, Bernard Bauduceau, Sophie Borot, Muriel Bourgeon-Ghittori, Olivier Bourron, David Boutoille, France Cazenave-Roblot, Claude Chaumeil, Emmanuel Cosson, Sandrine Coudol, Patrice Darmon, Emmanuel Disse, Amélie Ducet-Boiffard, Benedicte Gaborit, Michael Joubert, Véronique Kerlan, Bruno Laviolle, Lucien Marchand, Laurent Meyer, Louis Potier, Gaëtan Prevost, Jean-Pierre Riveline, René Robert, Pierre-Jean Saulnier, Ariane Sultan, Jean-François Thébaut, Charles Thivolet, Blandine Tramunt, Camille Vatier, Ronan Roussel, Jean-François Gautier, Pierre Gourdy
Diabetologia, 2020, 63 (11), pp.2491-2494. ⟨10.1007/s00125-020-05255-9⟩
Article dans une revueAbstract 1668: Mutational landscape and pharmacological profiling of a panel of prostate PDX models including hormone-naïve, hormone-sensitive and castrate-resistant prostate cancer specimens
Myriam Lassalle, Claire Béraud, Hervé Lang, Véronique Lindner, Yves Allory, Eric Potiron, Thierry Massfelder, Philippe Lluel, Yolande Misseri
Cancer Research, 2020, 80 (16_Supplement), pp.1668-1668. ⟨10.1158/1538-7445.AM2020-1668⟩
Article dans une revueAbstractAbstract Prostate Cancer (PCa) is the second most frequent cancer in men worldwide and the fifth leading cause of cancer death with an incidence rate of 13.5%. PCa is driven by multiple genomic alterations, with distinct patterns and clinical implications. These genomic alterations occurring both early and later in the natural history of the disease (ranging from localized disease, initially responsive to androgen deprivation therapy, to Castrate Resistant Prostate Cancers -CRPC) allow classification of PCa in several molecular subtypes with potential clinical relevance. Patient-Derived Xenograft (PDX) models have become the most reliable in vivo human cancer models. Developing such models that capture the biological heterogeneity and mutational landscape of PCa, remains a challenge, but is essential for delivery of precision medicine in metastatic castrate resistant stages. In this study, we present the genomic and transcriptomic landscapes, as well as the pharmacological status of an established bank of seven (7) prostate PDX models ranging from hormone naïve to hormone-resistance PCa specimens. Samples of PCa along with normal corresponding tissues were obtained directly from patients at surgery. Fragments were subcutaneously xenografted into immunocompromised mice to establish PDX models. After the first growth in mice, they were serially passaged in vivo and considered to be established from P3. To ensure model stability, PDX tumors at multiple passages and patients' primary tumors were processed for histological, transcriptomic (Affymetrix U133 plus 2.0 microarray) and STR profile analyses. Genomic characteristics (WES, CNA) were also investigated. Finally, the responses of the PDX models to androgen deprivation and docetaxel were also evaluated. 7 PDX models were successfully established (> P3 in mice) out of 253 primary prostatic tumors collected from surgery. Within those models, one matched pair of responsive adenocarcinoma and neuroendocrine castration-resistant (NE-CRPC) models from the same patient was generated. Histological, transcriptomic and STR profiling validated the stability of the models compared to the parental tumor. The genomic analyses revealed i) the mutational burden rise with the resistance to treatments of the models, correlating with clinical results ii) an increase of metastatic genes loss in the NE-CRPC compared to the corresponding hormone sensitive adenocarcinoma. Furthermore, for all the PDX models generated, genomic and mutational analyses revealed specific molecular features and allowed molecular classification depending on tumor stage. Based on the molecular taxonomy of primary prostate cancers, the presented panel covers the different progression steps of the pathology. Considering the scarcity of useful models for PCa and the difficulties to develop such models, the prostate PDX models collection presented here should clearly help understanding disease progression and supporting precision medicine approaches for patients with advanced PCa. Citation Format: Myriam Lassalle, Claire Béraud, Hervé Lang, Véronique Lindner, Yves Allory, Eric Potiron, Thierry Massfelder, Philippe Lluel, Yolande Misseri. Mutational landscape and pharmacological profiling of a panel of prostate PDX models including hormone-naïve, hormone-sensitive and castrate-resistant prostate cancer specimens [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 1668.
Flavagline synthetic derivative induces senescence in glioblastoma cancer cells without being toxic to healthy astrocytes
Ezeddine Harmouch, Joseph Seitlinger, Hassan Chaddad, Geneviève Ubeaud-Sequier, Jochen Barths, Sani Saidu, Laurent Désaubry, Stéphanie Grandemange, Thierry Massfelder, Guy Fuhrmann, Florence Fioretti, Monique Dontenwill, Nadia Benkirane-Jessel, Ysia Idoux-Gillet
Scientific Reports, 2020, 10 (1), pp.13750. ⟨10.1038/s41598-020-70820-6⟩
Article dans une revueAbstractGlioblastoma (GBM) is one of the most aggressive types of cancer, which begins within the brain. It is the most invasive type of glioma developed from astrocytes. Until today, Temozolomide (TMZ) is the only standard chemotherapy for patients with GBM. Even though chemotherapy extends the survival of patients, there are many undesirable side effects, and most cases show resistance to TMZ. FL3 is a synthetic flavagline which displays potent anticancer activities, and is known to inhibit cell proliferation, by provoking cell cycle arrest, and leads to apoptosis in a lot of cancer cell lines. However, the effect of FL3 in glioblastoma cancer cells has not yet been examined. Hypoxia is a major problem for patients with GBM, resulting in tumor resistance and aggressiveness. In this study, we explore the effect of FL3 in glioblastoma cells under normoxia and hypoxia conditions. Our results clearly indicate that this synthetic flavagline inhibits cell proliferation and induced senescence in glioblastoma cells cultured under both conditions. In addition, FL3 treatment had no effect on human brain astrocytes. These findings support the notion that the FL3 molecule could be used in combination with other chemotherapeutic agents or other therapies in glioblastoma treatments.
Short-Term Effects of Air Pollution on Coronary Events in Strasbourg, France-Importance of Seasonal Variations
Baptiste Vaudrey, Marie Mielcarek, Erik Sauleau, Nicolas Meyer, Benjamin Marchandot, Marie Moitry, Pierre Robellet, Thierry Reeb, Laurence Jesel, Patrick Ohlmann, Thomas Bourdrel, Olivier Morel
Medical Sciences, 2020, 8 (3), ⟨10.3390/medsci8030031⟩
Article dans une revueAbstractThe aim of this study, is to investigate the effects of a short-term exposure to air pollutants, as assessed by Nitrogen dioxide (NO2), Particulate Matter PM2,5 and PM10 concentrations, on coronary event onsets in Strasbourg, France. An observational, analytical, retrospective, epidemiological study was conducted in Strasbourg between 1 January 2012 and 31 December 2014. Higher daily coronary events rates were evidenced when NO2 concentrations were measured above 40 µg/m3 (1.258 (95% CI 1.142-1.374) vs. 1.110 (95% CI 1.033-1.186); p = 0.015). The NO2 concentration was higher than 30 µg/m3 for 677 days (61.8%). Higher daily coronary events rates were evidenced when NO2 concentrations were measured above 30 µg/m3 (1.208 (95% CI 1.128-1.289) vs. 1.067 (95% CI 0.961-1.172) p = 0.009). A marked seasonality of NO2, PM2.5, and PM10 concentrations characterized by an increase during winter and a decrease during the summer could be established. The seasonality of coronary events was evidenced simultaneously. After adjustments were made to account for the time and the month, no independent impact of NO2, PM2.5 or PM10 on daily coronary events could be demonstrated.
Extracorporeal Membrane Oxygenation for Critically Ill Patients with COVID-19–related Acute Respiratory Distress Syndrome: Worth the Effort?
Pierre-Emmanuel Falcoz, Alexandra Monnier, Marc Puyraveau, Stéphanie Perrier, Pierre-Olivier Ludes, Anne Olland, Paul-Michel Mertes, Francis Schneider, Julie Helms, Ferhat Meziani
American Journal of Respiratory and Critical Care Medicine, 2020, 202 (3), pp.460-463. ⟨10.1164/rccm.202004-1370LE⟩
Article dans une revueAbstractAccording to Chinese and Italian reports, 15–42% of patients with coronavirus disease (COVID-19) develop acute respiratory distress syndrome (ARDS), with a 60% mortality rate (1–3). Venovenous extracorporeal membrane oxygenation (VV-ECMO) is therefore considered a rescue therapy to be used in the most severe ARDS, as recommended by the World Health Organization’s interim guidelines for the management of patients with COVID-19 (4). However, without a significant impact on mortality, the benefit of ECMO in ARDS remains controversial (5). Generally, only few data on the use of ECMO in the present pandemic are available (1, 2) with a short follow-up (6, 7). However, accurately selecting patients with COVID-19–related ARDS, who may be good candidates for ECMO support, is important during a pandemic characterized by limited medical resources.
Phenotypic characteristics and prognosis of inpatients with COVID-19 and diabetes: the CORONADO study
Bertrand Cariou, Samy Hadjadj, Matthieu Wargny, Matthieu Pichelin, Abdallah Al-Salameh, Ingrid Allix, Coralie Amadou, Gwenaëlle Arnault, Florence Baudoux, Bernard Bauduceau, Sophie Borot, Muriel Bourgeon-Ghittori, Olivier Bourron, David Boutoille, France Cazenave-Roblot, Claude Chaumeil, Emmanuel Cosson, Sandrine Coudol, Patrice Darmon, Emmanuel Disse, Amélie Ducet-Boiffard, Benedicte Gaborit, Michael Joubert, Véronique Kerlan, Bruno Laviolle, Lucien Marchand, Laurent Meyer, Louis Potier, Gaëtan Prévost, Jean-Pierre Riveline, René Robert, Pierre-Jean Saulnier, Ariane Sultan, Jean-François Thébaut, Charles Thivolet, Blandine Tramunt, Camille Vatier, Ronan Roussel, Jean-François Gautier, Pierre Gourdy
Diabetologia, 2020, 63 (8), pp.1500-1515. ⟨10.1007/s00125-020-05180-x⟩
Article dans une revueAbstractAims/hypothesis Coronavirus disease-2019 (COVID-19) is a life-threatening infection caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) virus. Diabetes has rapidly emerged as a major comorbidity for COVID-19 severity. However, the phenotypic characteristics of diabetes in COVID-19 patients are unknown.Methods We conducted a nationwide multicentre observational study in people with diabetes hospitalised for COVID-19 in 53 French centres in the period 10-31 March 2020. The primary outcome combined tracheal intubation for mechanical ventilation and/or death within 7 days of admission. Age-and sex-adjusted multivariable logistic regressions were performed to assess the prognostic value of clinical and biological features with the endpoint. ORs are reported for a 1 SD increase after standardisation.Results The current analysis focused on 1317 participants: 64.9% men, mean age 69.8 ± 13.0 years, median BMI 28.4 (25th-75th percentile: 25.0-32.7) kg/m 2 ; with a predominance of type 2 diabetes (88.5%). Microvascular and macrovascular diabetic complications were found in 46.8% and 40.8% of cases, respectively. The primary outcome was encountered in 29.0% (95% CI 26.6, 31.5) of participants, while 10.6% (9.0, 12.4) died and 18.0% (16.0, 20.2) were discharged on day 7. In univariate analysis, characteristics prior to admission significantly associated with the primary outcome were sex, BMI and previous treatment with renin-angiotensin-aldosterone system (RAAS) blockers, but not age, type of diabetes, HbA 1c diabetic complications or glucose-lowering therapies. In multivariable analyses with covariates prior to admission, only BMI remained positively associated with the primary outcome (OR 1.28 [1.10, 1.47]). On admission, dyspnoea (OR 2.10 [1.31, 3.35]), as well as lymphocyte count (OR 0.67 [0.50, 0.88]), C-reactive protein (OR 1.93 [1.43, 2.59]) and AST (OR 2.23 [1.70, 2.93]) levels were independent predictors of the primary outcome. Finally, age (OR 2.48 [1.74, 3.53]), treated obstructive sleep apnoea (OR 2.80 [1.46, 5.38]), and microvascular (OR 2.14 [1.16, 3.94]) and macrovascular complications (OR 2.54 [1.44, 4.50]) were independently associated with the risk of death on day 7.Conclusions/interpretations: In people with diabetes hospitalised for COVID-19, BMI, but not long-term glucose control, was positively and independently associated with tracheal intubation and/or death within 7 days
Accordion phenomenon in the descending aorta during transcatheter aortic valve replacement followed by mesenteric ischaemia
Kensuke Matsushita, Sebastien Hess, Patrick Ohlmann, Olivier Morel
European Heart Journal, 2020, 41 (29), ⟨10.1093/eurheartj/ehz793⟩
Article dans une revueAbstract A24: Establishment of a panel of patient-derived tumor xenograft models recapitulating molecular heterogeneity and drug response of muscle-invasive bladder tumors
Claire Béraud, Hervé Lang, Myriam Lassalle, Véronique Lindner, Aurélie Kamoun, Michel Soulié, Elodie Guillon, Clémentine Krucker, Xavier Gamé, Pascal Rischmann, Aurélien de Reynies, Yves Allory, François Radvanyi, Philippe Lluel, Thierry Massfelder, Isabelle Bernard-Pierrot
Clinical Cancer Research, 2020, 26 (15_Supplement), pp.A24-A24. ⟨10.1158/1557-3265.BLADDER19-A24⟩
Article dans une revueAbstractAbstract Background: Muscle-invasive bladder cancers (MIBCs) constitute a heterogeneous group of tumors with poor outcome. Recently, MIBC molecular subtyping efforts from an international consortium led to the identification of six subtypes, improving prediction of clinical outcomes and treatment responses. FGFR3 alterations (mutations and translocations), observed in 20% of MIBCs, are found mainly in the luminal papillary subtype that respond poorly to chemo- and immunotherapy. Basal tumors represent 35% of MIBCs and were shown to be better responders to chemotherapy. Here, we describe the development and characterization of patient-derived primary MIBC xenografts (PDX) belonging to these main subtypes. Methods: Bladder tumors were obtained from patients at surgery. Tumor fragments were subcutaneously engrafted into immune-compromised mice. Primary tumors and matched PDX tumors at multiple passages were analyzed regarding growth characteristics, histopathology (H&E staining, CK5/6, FOXA1, and GATA3 immunohistochemistry), gene expression (Affymetrix U133 plus 2.0 microarray), and genetic stability (STR profiling). Hotspot oncogenic mutations for FGFR3, PIK3CA, HRAS, KRAS, NRAS, PPARG, and RXRA were also assessed. Additionally, pharmacologic responses to standard-of-care and targeted therapies were characterized. Findings: From 152 MIBC tumors at all stages and grades, 32 PDX models were successfully established (21.1% success rate). This take rate did not seem correlated to any classical tumor characteristics. Importantly, transcriptomic analysis allowed us to identify PDX models belonging to different molecular subtypes, notably the basal-like and luminal papillary subtypes, including PDXs with FGFR3 mutations. All histologic, genetic, and molecular features validated the stability of the PDX models compared to the parental tumors. Histologic analyses correlated with the molecular classification. These models reproduced the response to cisplatin-based therapies observed in the clinic. Basal models, except one harboring a FGFR3 mutation, were sensitive to anti-EGFR therapies but to a lesser extent than to chemotherapy. FGFR3-mutated PDX models, including a basal model, were highly responsive to FGFR3 inhibitors and less responsive to chemotherapy. Conclusion: We have developed and characterized highly relevant preclinical models for MIBCs, including basal and FGFR3-mutated tumors, recapitulating molecular heterogeneity and drug responses as observed in patients with MIBCs. They represent essential tools for developing new, efficient therapies against this deadly disease. Citation Format: Claire Béraud, Hervé Lang, Myriam Lassalle, Véronique Lindner, Aurélie Kamoun, Michel Soulié, Elodie Guillon, Clémentine Krucker, Xavier Gamé, Pascal Rischmann, Aurélien De Reynies, Yves Allory, François Radvanyi, Philippe Lluel, Thierry Massfelder, Isabelle Bernard-Pierrot. Establishment of a panel of patient-derived tumor xenograft models recapitulating molecular heterogeneity and drug response of muscle-invasive bladder tumors [abstract]. In: Proceedings of the AACR Special Conference on Bladder Cancer: Transforming the Field; 2019 May 18-21; Denver, CO. Philadelphia (PA): AACR; Clin Cancer Res 2020;26(15_Suppl):Abstract nr A24.
Association Between Pulmonary Embolism and COVID‐19 in Emergency Department Patients Undergoing Computed Tomography Pulmonary Angiogram: The PEPCOV International Retrospective Study
Yonathan Freund, Marie Drogrey, Òscar Miró, Alessio Marra, Anne-Laure Féral-Pierssens, Andrea Penaloza, Barbara Hernandez, Sebastien Beaune, Judith Gorlicki, Prabakar Vaittinada Ayar, Jennifer Truchot, Barbara Pena, Alfons Aguirre, Florent Fémy, Nicolas Javaud, Anthony Chauvin, Tahar Chouihed, Emmanuel Montassier, Pierre-Géraud Claret, Céline Occelli, Mélanie Roussel, Fabien Brigant, Sami Ellouze, Pierrick Le Borgne, Said Laribi, Tabassome Simon, Olivier Lucidarme, Marine Cachanado, Ben Bloom
Academic Emergency Medicine, 2020, 27 (9), pp.811-820. ⟨10.1111/acem.14096⟩
Article dans une revueAbstractBackground: There have been reports of procoagulant activity in patients with COVID-19. Whether there is an association between pulmonary embolism (PE) and COVID-19 in the emergency department (ED) is unknown. The aim of this study was to assess whether COVID-19 is associated with PE in ED patients who underwent a computed tomographic pulmonary angiogram (CTPA).Methods: A retrospective study in 26 EDs from six countries. ED patients in whom a CTPA was performed for suspected PE during a 2-month period covering the pandemic peak. The primary endpoint was the occurrence of a PE on CTPA. COVID-19 was diagnosed in the ED either on CT or reverse transcriptase-polymerase chain reaction. A multivariable binary logistic regression was built to adjust with other variables known to be associated with PE. A sensitivity analysis was performed in patients included during the pandemic period.Results: A total of 3,358 patients were included, of whom 105 were excluded because COVID-19 status was unknown, leaving 3,253 for analysis. Among them, 974 (30%) were diagnosed with COVID-19. Mean (±SD) age was 61 (±19) years and 52% were women. A PE was diagnosed on CTPA in 500 patients (15%). The risk of PE was similar between COVID-19 patients and others (15% in both groups). In the multivariable binary logistic regression model, COVID-19 was not associated with higher risk of PE (adjusted odds ratio = 0.98, 95% confidence interval = 0.76 to 1.26). There was no association when limited to patients in the pandemic period.Conclusion: In ED patients who underwent CTPA for suspected PE, COVID-19 was not associated with an increased probability of PE diagnosis. These results were also valid when limited to the pandemic period. However, these results may not apply to patients with suspected COVID-19 in general.
Paradoxical Increase of Stroke in Patients with Defect of High Molecular Weight Multimers of the von Willebrand Factors following Transcatheter Aortic Valve Replacement
Kensuke Matsushita, Benjamin Marchandot, Antonin Trimaille, Marion Kibler, Joe Heger, Marilou Peillex, Sebastien Hess, Lelia Grunebaum, Antje Reydel, Michel Kindo, Minh Tam Hoang, Chisato Sato, Fabien de Poli, Pierre Leddet, Mickael Ohana, Laurence Jesel, Patrick Ohlmann, Sophie Susen, Olivier Morel
Thrombosis and Haemostasis, 2020, 120 (09), pp.1330-1338. ⟨10.1055/s-0040-1713424⟩
Article dans une revueAbstractAbstract Background Stroke is a major cause of disability after transcatheter aortic valve replacement (TAVR) and stroke prediction models and data are crucially needed. Following TAVR, high molecular weight (HMW) multimers defect of von Willebrand factor (VWF) as assessed by closure time of adenosine diphosphate (CT-ADP) value > 180 seconds is an independent predictor of bleeding events. This study sought to identify predictors of ischemic neurological events in patients who underwent TAVR and the specific impact of HMW multimers defect of VWF. Methods Patients were prospectively enrolled between November 2012 and May 2018 at our institution. The CT-ADP, a point-of-care measure of hemostasis, was assessed the day before and 24 hours after the procedures. The rate of ischemic stroke and transient ischemic attack (TIA) was recorded up to 30 days after the procedures. Results Of 565 TAVR patients, ischemic stroke/TIA was observed in 21 (3.7%) patients within 30 days. Ischemic stroke/TIA was associated with major/life-threatening bleeding complications (MLBCs) (9 [43%] vs. 88 [16%], p = 0.002) and postprocedure CT-ADP > 180 seconds (10 [48%] vs. 116 [21%], p = 0.01). By multivariate analysis, MLBCs (odds ratio [OR]: 3.58; 95% confidence interval [CI]: 1.45–8.84; p = 0.006) and postprocedure CT-ADP > 180 seconds (OR: 3.38; 95% CI: 1.38–8.25; p = 0.008) were evidenced as independent predictors of ischemic stroke/TIA. Conclusion MLBCs and CT-ADP > 180 seconds were identified as predictors for ischemic stroke or TIA. The present study suggests that the defects of HMW multimers of the VWFs may contribute not only to bleeding events but also to thrombotic events.
Safe administration of corticosteroids in severe ulcerative colitis and active SARS-CoV2 infection
Pierre Mayer, Antonio Saviano, Loic Kassegne, Thomas F. Baumert, Jean-Marie Reimund, Francois Habersetzer
Digestive and liver disease, 2020, 52 (11), pp.1257-1258. ⟨10.1016/j.dld.2020.07.022⟩
Article dans une revueImpact of Incomplete Coronary Revascularization on Late Ischemic and Bleeding Events after Transcatheter Aortic Valve Replacement
Adrien Carmona, Benjamin Marchandot, François Séverac, Marion Kibler, Antonin Trimaille, Joé Heger, Marilou Peillex, Kensuke Matsushita, Jessica Ristorto, Viet Anh Hoang, Sébastien Hess, Laurence Jesel-Morel, Patrick Ohlmann, Olivier Morel
Journal of Clinical Medicine, 2020, 9 (7), ⟨10.3390/jcm9072267⟩
Article dans une revueAbstractBACKGROUND: The impact of coronary artery disease (CAD) and revascularization by percutaneous coronary intervention (PCI) on prognosis in patients undergoing transcatheter aortic valve replacement (TAVR) remain debated. A dismal prognosis in patients undergoing PCI has been associated with elevated baseline SYNTAX score (bSS) and residual SYNTAX score (rSS). The objective was to investigate whether the degree of bSS and rSS impacted ischemic and bleeding events after TAVR. METHODS: bSS and rSS were calculated in 311 patients admitted for TAVR. The primary outcome was the occurrence of major adverse cardiac events (MACE), a composite endpoint of myocardial infarction, stroke, cardiovascular death, or rehospitalization for heart failure. The occurrence of late major/life-threatening bleeding complications (MLBCs) and each primary endpoint individually were the secondary endpoints. RESULTS: bSS > 22 was associated with higher occurrence of MACE (p = 0.013). rSS > 8 and bSS > 22 had no impact on overall cardiovascular mortality. rSS > 8 and bSS > 22 were associated with higher rates of myocardial infarction (p = 0.001 and p = 0.004) and late occurrence of MLBCs. Multivariate analysis showed that bSS > 22 (sHR 2.48) and rSS > 8 (sHR 2.35) remained predictors of MLBCs but not of myocardial infarction. CONCLUSIONS: Incomplete coronary revascularization and CAD burden did not impact overall and cardiac mortality but constitute predictors of late MLBCs in TAVR patients.
Performances of disseminated intravascular coagulation scoring systems in septic shock patients
Julie Helms, François Severac, Hamid Merdji, Raphaël Clere-Jehl, Bruno François, Emmanuelle Mercier, Jean-Pierre Quenot, Ferhat Meziani
Annals of Intensive Care, 2020, 10 (1), pp.92. ⟨10.1186/s13613-020-00704-5⟩
Article dans une revueAbstractBackground:There is no gold standard to diagnose septic shock-induced disseminated intravascular coagulation (DIC). The objective of our multicenter prospective study was to assess the performances of the different major scoring systems in terms of mortality prediction and DIC diagnosis. The JAAM-DIC 2016 score, the ISTH overt-DIC 2001 score, the associations of sepsis-induced coagulopathy (SIC) score with JAAM-DIC 2016 or ISTH overt-DIC scores were tested in patients within 12 h of their admission in ICU for septic shock (day 1) and at day 2.Results582 patients were enrolled in the study. 182/567 (32.1%) were diagnosed with DIC according to ISTH overt-DIC score, and 193/561 (34.4%) according to JAAM-DIC score; 486/577 patients (84.2%) were diagnosed with a coagulopathy according to SIC score. A moderate concordance was observed between ISTH overt-DIC and JAAM-DIC [kappa =0.67 (0.60, 0.73), p<0.001]. The delay of positivity of the scores for early DIC patients was not different between JAAM-DIC and ISTH overt-DIC scores. Although it was positive earlier, SIC score had worse diagnosis specificity, as 84.2% of the patients with septic shock were diagnosed with "coagulopathy". The specificity of SIC score alone to predict mortality was very low [0.18 (0.15; 0.22)], compared to the ones of JAAM-DIC score [0.71 (0.67; 0.75)], and of ISTH overt-DIC score [0.76 (0.72; 0.80)], p<0.001. The sensitivity of SIC score to predict mortality was 0.95 [0.89; 0.98], and the ones of JAAM-DIC score and ISTH overt-DIC score were 0.61 [0.50; 0.70] and 0.68 [0.58; 0.77], respectively. There was no benefit in sensitivity and specificity in combining SIC score to JAAM-DIC score or to ISTH overt-DIC score, compared to JAAM-DIC score or ISTH overt-DIC score alone.ConclusionsOur data suggest that the added value of SIC score alone or combined with other scores is limited, and that both JAAM-DIC score and ISTH overt-DIC score can be used in septic shock patients.Trial registration clinicaltrial; Trial registration number: NCT02391792; Date of registration: 18/03/2015; URL of trial registry record: https://clinicaltrials.gov/ct2/show/NCT02391792?term=meziani&draw=4&rank=1
Potential Implantable Nanofibrous Biomaterials Combined with Stem Cells for Subchondral Bone Regeneration
Rana Smaida, Luc Pijnenburg, Silvia Irusta, Erico Himawan, Gracia Mendoza, Ezeddine Harmouch, Ysia Idoux-Gillet, Sabine Kuchler-Bopp, Nadia Benkirane-Jessel, Guoqiang Hua
Materials, 2020, 13 (14), pp.3087. ⟨10.3390/ma13143087⟩
Article dans une revueAbstractThe treatment of osteochondral defects remains a challenge. Four scaffolds were produced using Food and Drug Administration (FDA)-approved polymers to investigate their therapeutic potential for the regeneration of the osteochondral unit. Polycaprolactone (PCL) and poly(vinyl-pyrrolidone) (PVP) scaffolds were made by electrohydrodynamic techniques. Hydroxyapatite (HAp) and/or sodium hyaluronate (HA) can be then loaded to PCL nanofibers and/or PVP particles. The purpose of adding hydroxyapatite and sodium hyaluronate into PCL/PVP scaffolds is to increase the regenerative ability for subchondral bone and joint cartilage, respectively. Human bone marrow-derived mesenchymal stem cells (hBM-MSCs) were seeded on these biomaterials. The biocompatibility of these biomaterials in vitro and in vivo, as well as their potential to support MSC differentiation under specific chondrogenic or osteogenic conditions, were evaluated. We show here that hBM-MSCs could proliferate and differentiate both in vitro and in vivo on these biomaterials. In addition, the PCL-HAp could effectively increase the mineralization and induce the differentiation of MSCs into osteoblasts in an osteogenic condition. These results indicate that PCL-HAp biomaterials combined with MSCs could be a beneficial candidate for subchondral bone regeneration.
Focus on sepsis
Julie Helms, Anders Perner
Intensive Care Medicine, 2020, 46 (7), pp.1457-1459. ⟨10.1007/s00134-020-06038-x⟩
Article dans une revueCan lumacaftor-ivacaftor reverse glucose-tolerance abnormalities in cystic fibrosis?
Laurence Kessler
Journal of Cystic Fibrosis, 2020, 19 (4), pp.666. ⟨10.1016/j.jcf.2020.04.013⟩
Article dans une revueThe prohibitin-binding compound fluorizoline affects multiple components of the translational machinery and inhibits protein synthesis
Xin Jin, Jianling Xie, Michael Zabolocki, Xuemin Wang, Tao Jiang, Dong Wang, Laurent Désaubry, Cedric Bardy, Christopher G Proud
Journal of Biological Chemistry, 2020, 295 (29), pp.9855 - 9867. ⟨10.1074/jbc.ra120.012979⟩
Article dans une revueWoman with sore throat, fever and abdominal pain
Pierrick Le Borgne, Claudia Brunhuber, Pascal Bilbault
European Journal of Internal Medicine, 2020, 76, pp.89 - 90. ⟨10.1016/j.ejim.2020.04.038⟩
Article dans une revueAbstractNo abstract available
High-grade atrioventricular block occurring during percutaneous closure of patent foramen ovale: a case report
Marion Kibler, Halim Marzak, Laurence Jesel, Patrick Ohlmann
European Heart Journal. Case Reports, 2020, 4 (4), pp.1 - 5. ⟨10.1093/ehjcr/ytaa141⟩
Article dans une revueAbstractBackground Percutaneous closure of patent foramen ovale (PFO) is recommended for patients presenting with PFO-related stroke. Acute high-grade conduction disturbances occurring during PFO closure procedure have not been previously reported.
Evaluating the Surgeon's Experience as a Risk Factor for Post-Esophagectomy Chylothorax on a Four-Year Cohort
Nadim Malibary, Simone Manfredelli, Abdullah Almuttawa, Jean-Baptiste Delhorme, Benoît Romain, Cécile Brigand, Serge Rohr
Cureus Journal of Medical Science, 2020, 12 (6), pp.e8696. ⟨10.7759/cureus.8696⟩
Article dans une revueAbstractBACKGROUND: Chylothorax (CHT) is a known post-operative complication after esophageal surgery with vaguely defined risk factors. METHODS: This is a retrospective chart review of 70 consecutive patients with operable cancer over a period of four years (January 2013 to December 2016). Ivor Lewis and McKeown interventions were performed. Thoracic duct is identified and ligated routinely. Factors related to the patient, the tumor, and the operating surgeon were analyzed. RESULTS: Incidence of CHT was 10%. Surgeons with less than five years of esophageal surgery experience had the most CHT, 71% (p=0.001). No association was found between tumor location, type, body mass index (BMI), neoadjuvant therapy, response to neoadjuvant therapy or male sex, and CHT. The odds of developing CHT were 17 times higher in patients operated by a junior surgeon (odds ratio, OR=17.67, confidence interval, CI 2.68-116.34, p=0.003). Four patients (5.7%) had anastomotic leaks, none of them had CHT. Senior surgeons had less operative time and harvested more lymph nodes (p=0.0002 and p=0.1086 respectively). CONCLUSION: Surgeon's experience might be considered a major risk factor to develop CHT. This finding needs to be confirmed by a larger multicentric series taking into consideration the human factor.
Significance of neutrophil microparticles in ischaemia-reperfusion: Pro-inflammatory effectors of endothelial senescence and vascular dysfunction
Ali El Habhab, Raed Altamimy, Malak Abbas, Mohamad Kassem, Lamia Amoura, Abdul Wahid Qureshi, Hanine El Itawi, Guillaume Kreutter, Sonia Khemais-Benkhiat, Fatiha Zobairi, Valerie Schini-Kerth, Laurence Kessler, Florence Toti
Journal of Cellular and Molecular Medicine, 2020, 24 (13), pp.7266-7281. ⟨10.1111/jcmm.15289⟩
Article dans une revueNeurologic Features in Severe SARS-CoV-2 Infection
Julie Helms, Stephane Kremer, Hamid Merdji, Raphaël Clere-Jehl, Malika Schenck, Christine Kummerlen, Olivier Collange, Clotilde Boulay, Samira Fafi-Kremer, Mickaël Ohana, Mathieu Anheim, Ferhat Meziani
New England Journal of Medicine, 2020, 382 (23), pp.2268-2270. ⟨10.1056/NEJMc2008597⟩
Article dans une revueSRC Tyrosine Kinase Inhibitor and X-rays Combined Effect on Glioblastoma Cell Lines
Filippo Torrisi, Luigi Minafra, Francesco Cammarata, Gaetano Savoca, Marco Calvaruso, Nunzio Vicario, Laura Maccari, Elodie A. Pérès, Hayriye Özçelik, Myriam Bernaudin, Lorenzo Botta, Giorgio Russo, Rosalba Parenti, Samuel Valable
International Journal of Molecular Sciences, 2020, 21 (11), pp.3917. ⟨10.3390/ijms21113917⟩
Article dans une revueAbstractGlioblastoma (GBM) is one of the most lethal types of tumor due to its high recurrence level in spite of aggressive treatment regimens involving surgery, radiotherapy and chemotherapy. Hypoxia is a feature of GBM, involved in radioresistance, and is known to be at the origin of treatment failure. The aim of this work was to assess the therapeutic potential of a new targeted c-SRC inhibitor molecule, named Si306, in combination with X-rays on the human glioblastoma cell lines, comparing normoxia and hypoxia conditions. For this purpose, the dose modifying factor and oxygen enhancement ratio were calculated to evaluate the Si306 radiosensitizing effect. DNA damage and the repair capability were also studied from the kinetic of γ-H2AX immunodetection. Furthermore, motility processes being supposed to be triggered by hypoxia and irradiation, the role of c-SRC inhibition was also analyzed to evaluate the migration blockage by wound healing assay. Our results showed that inhibition of the c-SRC protein enhances the radiotherapy efficacy both in normoxic and hypoxic conditions. These data open new opportunities for GBM treatment combining radiotherapy with molecularly targeted drugs to overcome radioresistance.
Meniscus sutures by arthrotomy for a non-transfixing horizontal lesion associated with a cyst
Nicolas Girodano Orsini, Henri Favreau, David Eichler, Matthieu Ollivier, François Bonnomet, Matthieu Ehlinger
International Orthopaedics, 2020, 44 (6), pp.1071-1076. ⟨10.1007/s00264-020-04491-3⟩
Article dans une revueAbstractIntroduction Meniscal cysts are rare in Stoller grade II horizontal lesions. Several techniques are described in the literature for their management, without any real gold standard. The objective of this work was to report a series of meniscal sutures associated with cyst resection by arthrotomy. The hypothesis was that the results were satisfactory and comparable with the data in the literature regardless of the technique reported without morbidity added by arthrotomy. Materials and methods This was a monocentric retrospective study on 13 patients, aged 33 on average with a grade II meniscus lesion associated with a cyst (9 lateral and 4 medial menisci). Pre-operative data available was the VAS (5.7/10) and the Lysholm score (61/100). Primary endpoints were as follows: pain (visual analogue scale), global satisfaction, Lysholm functional score, and return to sports and professional activities at a minimum of two years. Secondary endpoints were complications, possible recurrence, and/or surgical revision. Recurrences, complications, and surgical recovery were gathered. Results Patients were evaluated with an average follow-up of 32 months. All patients were satisfied or very satisfied. The VAS significantly improved (0.2/10, p < 0.05) as well as the Lysholm score (97/100, p < 0.05). All patients returned to their professional activity: 11 within two months, one within six weeks, and one in the first post-operative week (this patient being a student). Only one patient did not resume pre-operative sport level due to a femoropatellar syndrome, not linked to the meniscal surgery performed. However, only 11 patients resumed their previous sport level (84.6%). No recurrence or surgical revision occurred. Discussion The results are good and similar to the literature, confirming the working hypothesis. These results are equivalent to partial meniscectomies and arthroscopic sutures associated with a procedure on the cyst by arthroscopy or arthrotomy. The literature is in favour of a procedure on the cyst. Conclusion The results confirm the effectiveness of a direct approach suture of non-transfixing meniscal lesions associated with a cyst resection with a good functional recovery, without additional morbidity. The hypothesis was confirmed.
1109-P: Blood Pressure (BP) Lowering Effect of Empagliflozin Is Related to Decreased L-Arginine Clearance in Diabetic Rats
Sonia Khemais-Benkhiat, Daniel Veyel, Valerie Schini-Kerth, Bartlomiej Krawczyk, Michael Pieper, Michael Mark, Eric Mayoux
Diabetes, 2020, 69 (Supplement_1), ⟨10.2337/db20-1109-P⟩
Article dans une revueAbstractIntroduction: The availability of L-arginine is the rate-limiting factor in Nitric Oxide (NO) synthesis, a potent vasodilatory factor. L-arginine plasma levels are blunted in diabetes, thus L-arginine supplementation decreases BP in animal diabetic models, and type 2 diabetic patients. Renal reabsorption of filtered L-arginine in the proximal tubule is mainly sodium dependent. Higher filtered glucose load in diabetes may alter sodium gradient via higher glucose reabsorption by sodium-glucose cotransporters (SGLTs). Purpose: The mechanism by which SGLT2 inhibitors, such as Empagliflozin, decrease BP in type 2 diabetic patients, is still unknown. We hypothesize that SGLT2 inhibitors could decrease the urinary excretion of L-arginine, by restoring sodium gradient necessary for L-arginine reabsorption in the proximal tubule. Methods: Male obese Zucker diabetic fatty/Spontaneously hypertensive heart failure hybrid (ZSF1) rats and their lean littermates (CTR) received either Empagliflozin or vehicle for 6 weeks. Levels of L-arginine in urine and plasma were quantified via Liquid Chromatography-Mass Spectrometry. Plasmatic cGMP level, a marker of NO production and urinary 8-hydroxydeoxyguanosine (8-OHdG) level, a marker of oxidative stress, were measured. Results: The urinary level of L-arginine was higher in ZSF-1 rats compared to CTR ones, and plasmatic concentrations of L-arginine were lower in ZSF-1 rats compared to CTR ones. Both parameters were significantly reversed by Empagliflozin. Empagliflozin treatment increased plasmatic cGMP and decreased urinary 8-OHdG in diabetic rats. Conclusion: Empagliflozin decreased urinary excretion of L-arginine, associated with an increased plasmatic concentration of L-arginine and cGMP, and decreased oxidative stress in diabetic rats. This suggests that Empagliflozin increased NO production and bioavailability. Such effects might contribute to the BP lowering effect of Empagliflozin in diabetics. Disclosure S. Khemais-Benkhiat: Employee; Self; Boehringer Ingelheim International GmbH. D. Veyel: Employee; Self; Boehringer Ingelheim Pharmaceuticals, Inc. V. Schini-Kerth: Research Support; Self; Boehringer Ingelheim International GmbH. B. Krawczyk: Employee; Self; Boehringer Ingelheim Pharmaceuticals, Inc. M. Pieper: Employee; Self; Boehringer Ingelheim Pharmaceuticals, Inc. M. Mark: Employee; Self; Boehringer Ingelheim International GmbH. E. Mayoux: Employee; Self; Boehringer Ingelheim Pharmaceuticals, Inc.
COVID-19 international neurological registries
Gustavo C Román, Jacques Reis, Peter S Spencer, Alain Buguet, Serefnur Öztürk, Mohammad Wasay
The Lancet Neurology, 2020, 19 (6), pp.484-485. ⟨10.1016/S1474-4422(20)30148-4⟩
Article dans une revueMulticystic and diffuse malignant peritoneal mesothelioma in children
Sophie Vermersch, Alexis Arnaud, Daniel Orbach, Nicolas Andre, Claire Berger, Vahan Kepenekian, Cecile Brigand, Brice Fresneau, Marie‐laurence Poli‐merol, Cyril Habougit, François Varlet, Aurélien Scalabre
Pediatric Blood and Cancer, 2020, 67 (6), pp.e28286. ⟨10.1002/pbc.28286⟩
Article dans une revueAbstractBackground: Malignant and multicystic peritoneal mesotheliomas are extremely rare tumors in children, developing from mesothelial cells. No specific guidelines are available at this age. Methods: We performed a retrospective analysis of all identified children (< 18-year-old) treated in France from 1987 to 2017 for a diffuse malignant peritoneal mesothelioma (DMPM) or a multicystic peritoneal mesothelioma (MCPM). Results: Fourteen patients (5 males and nine females), aged 2.2 to 17.5 years, were included. The most frequent presenting symptoms were abdominal pain, ascitis, and alteration in the general condition. Eight patients had epithelioid mesothelioma, three had biphasic mesothelioma, and three had MCPM. Eight patients with DMPM diagnosis received cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC). Among them, six patients had neoadjuvant systemic chemotherapy, one patient, post-operative chemotherapy, and one patient CRS and HIPEC only. Three patients received only systemic chemotherapy. All patients with MCPM had only surgery. After a median follow-up of seven years (2-15), six patients (6/11; one death) with DMPM and two patients (two/three) with MCPM had a local and distant recurrences. Conclusion: Peritoneal mesothelioma in children is a rare condition with difficult diagnosis and high risk of recurrence. Worldwide interdisciplinary collaboration and networking are mandatory to help diagnosis and provide harmonious treatment guidelines.
Lack of viral clearance by the combination of hydroxychloroquine and azithromycin or lopinavir and ritonavir in SARS-CoV-2-related acute respiratory distress syndrome
Sami Hraiech, Jérémy Bourenne, Khaldoun Kuteifan, Julie Helms, Julien Carvelli, Marc Gainnier, Ferhat Meziani, Laurent Papazian
Annals of Intensive Care, 2020, 10 (1), pp.63. ⟨10.1186/s13613-020-00678-4⟩
Article dans une revuePrevalence of autoimmune diseases in thymic epithelial tumors (TET) insights from RYTHMIC.
Jose Carlos Benitez, Marie Eve Boucher, Eric Dansin, Mallorie Kerjouan, Julien Mazieres, Eric Pichon, Francois Thillays, Pierre-Emmanuel Falcoz, Benoit Roch, Youssef Oulkhouir, Calcagno Fabien, Luc Thiberville, Christelle Clément Duchene, Franck Morin, Pascale Missy, Pascal Alexandre Thomas, Jean-Michel Maury, Thierry Molina, Nicolas Girard, Benjamin Besse
Journal of Clinical Oncology, 2020, 38 (15_suppl), pp.9073-9073. ⟨10.1200/JCO.2020.38.15_suppl.9073⟩
Article dans une revueAbstract9073 Background: TET are associated with autoimmune disorders (AID) in up to 30% of patients (pts). However, there have been wide variations in the reported prevalence of AID in TET pts in small single-center series. RYTHMIC (Réseau tumeurs THYMiques et Cancer) is a French network mandated to systematically discuss every case of TET. We aimed to describe the prevalence of AID in a large French population. Methods: RYTHMIC database, hosted by IFCT (Intergroupe Francophone de Cancérologie Thoracique), prospectively includes all consecutive pts with a diagnosis of TET discussed in French national or regional tumor boards. We analyzed epidemiologic, clinical and pathological characteristics of pts with TET’s related AID. Results: From January 2012 to December 2019, 2909 pts were included in the database. The mean age at diagnosis of TET was 54 and 52% were male. In the overall population, Masaoka Koga stages were well balanced with 12.6% (n = 187) stage I, 8.8% (n = 131) stage IIa, 8.4% (n = 124) stage IIb, 11.1% (n = 164) stage III and 8.5% (n = 125) stage IV. There were 364 (12.5%) events of AID in 302 pts. 62 pts (17%) had more than 1 AID. Among the events, 236 were myasthenia gravis (MG) (64.8%), 19 Hypo-gammaglobulinemia syndrome (5.2%), 15 pure red cell aplasia (4.1%), 18 thyroiditis (4.9%) and 16 systemic erythematous lupus (4.4%). Diagnosis of AID was mostly done at tumor diagnosis (n = 239, 65.7%) but some patient had AID diagnosed before diagnosis (n = 67, 18.4%) or during follow up (n = 32, 8.8%). Among pts presenting AID, B2 was the most common subtype (n = 133, 36.5%). The incidence of AID per subtype was as follow: A (n = 10/81, 12.3%), AB (n = 48/225, 21.3%), B1 (n = 35/130, 26.9%), B2 (n = 133/295, 45.0%), B3 (n = 46/113, 40.7%), thymic carcinoma (n = 16/275, 5.8%). Conclusions: The prevalence of AID in pts with TET was 12.5%, > 40% in B2 and B3 subtypes. Diagnosis of AID can be delayed compared to the diagnosis of TET. Immunotherapy indication should be carefully assessed in pts with TET other than thymic carcinoma.
Biochanin A, the Most Potent of 16 Isoflavones, Induces Relaxation of the Coronary Artery Through the Calcium Channel and cGMP-dependent Pathway
Thomas Migkos, Jana Pourová, Marie Vopršalová, Cyril Auger, Valérie Schini-Kerth, Přemysl Mladěnka
Planta Medica, 2020, 86 (10), pp.708 - 716. ⟨10.1055/a-1158-9422⟩
Article dans une revueImpact of COVID-19 on the Cardiovascular System: A Review
Kensuke Matsushita, Benjamin Marchandot, Laurence Jesel, Patrick Ohlmann, Olivier Morel
Journal of Clinical Medicine, 2020, 9 (5), pp.1407. ⟨10.3390/jcm9051407⟩
Article dans une revueAbstractThe recent outbreak of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 has been declared a public health emergency of international concern. COVID-19 may present as acute respiratory distress syndrome in severe cases, and patients with pre-existing cardiovascular comorbidities are reported to be the most vulnerable. Notably, acute myocardial injury, determined by elevated high-sensitivity troponin levels, is commonly observed in severe cases, and is strongly associated with mortality. Therefore, understanding the effects of COVID-19 on the cardiovascular system is essential for providing comprehensive medical care for critically ill patients. In this review, we summarize the rapidly evolving data and highlight the cardiovascular considerations related to COVID-19.
Unveiling the Role of Inflammation and Oxidative Stress on Age-Related Cardiovascular Diseases
Arthur José Pontes Oliveira de Almeida, Mathania Silva de Almeida Rezende, Sabine Helena Dantas, Sonaly de Lima Silva, Júlio César Pinheiro Lúcio de Oliveira, Fátima de Lourdes Assunção Araújo de Azevedo, Rayanne Maira Felix Ribeiro Alves, Geovânia Maria Sales de Menezes, Pablo Ferreira dos Santos, Tays Amanda Felisberto Goncalves, Valérie B Schini-Kerth, Isac Almeida de Medeiros
Oxidative Medicine and Cellular Longevity, 2020, 2020, ⟨10.1155/2020/1954398⟩
Article dans une revueAbstractThe global population above 60 years has been growing exponentially in the last decades, which is accompanied by an increase in the prevalence of age-related chronic diseases, highlighting cardiovascular diseases (CVDs), such as hypertension, atherosclerosis, and heart failure. Aging is the main risk factor for these diseases. Such susceptibility to disease is explained, at least in part, by the increase of oxidative stress, in which it damages cellular components such as proteins, DNA, and lipids. In addition, the chronic inflammatory process in aging "inflammaging" also contributes to cell damage, creating a stressful environment which drives to the development of CVDs. Taken together, it is possible to identify the molecular connection between oxidative stress and the inflammatory process, especially by the crosstalk between the transcription factors Nrf-2 and NF-kappa B which are mediated by redox signalling and are involved in aging. Therapies that control this process are key targets in the prevention/combat of age-related CVDs. In this review, we show the basics of inflammation and oxidative stress, including the crosstalk between them, and the implications on age-related CVDs.
Red wine extract disrupts Th17 lymphocyte differentiation in a colorectal cancer context
Pauline Chalons, Flavie Courtaut, Emeric Limagne, Fanny F Chalmin, Emma Cantos-Villar, Tristan Richard, Cyril Auger, Philippe Chabert, Valérie Schini- Kerth, François Ghiringhelli, Virginie Aires, Dominique Delmas
Molecular Nutrition and Food Research, 2020, 64 (11), pp.1901286. ⟨10.1002/mnfr.201901286⟩
Article dans une revueAbstractScope: Scope: It is well established that immune response and inflammation promote tumoral progression. Immune cells communicate through direct contact or through cytokine secretion, and it is the pro-inflammatory status that will tip the balance toward tumor progression or anti-tumor immunity. It is demonstrated here that a red wine extract (RWE) can decrease inflammation through its action on the inflammasome complex. This study determines whether an RWE could impact other key actors of inflammation, including T helper 17 (Th17) immune cells in particular. Methods and results: Methods and results: Using an RWE containing 4.16 g of polyphenols/liter of wine, it is shown that RWE decreases colorectal cancer cells in vitro and induces a reduction in colorectal tumor growth associated with a decrease in tumor-infiltrating lymphocytes in vivo. The process of T-lymphocyte differentiation in Th17 cells is altered by RWE, as revealed by the decrease in the expression of key actors controlling this process, such as signal transducer and activator of transcription 3 and retinoid acid-related orphan receptor t. This disruption is associated with an inhibition of inflammatory interleukin 17 secretion. Conclusion: The data highlights the major involvement of Th17 immune cells in the biological effects of an RWE.
High risk of thrombosis in patients with severe SARS-CoV-2 infection: a multicenter prospective cohort study
Julie Helms, Charles Tacquard, Francois Severac, Ian Leonard-Lorant, Mickaël Ohana, Xavier Delabranche, Hamid Merdji, Raphaël Clere-Jehl, Malika Schenck, Florence Fagot Gandet, Samira Fafi-Kremer, Vincent Castelain, Francis Schneider, Lélia Grunebaum, Eduardo Anglés-Cano, Laurent Sattler, Paul-Michel Mertes, Ferhat Meziani
Intensive Care Medicine, 2020, ⟨10.1007/s00134-020-06062-x⟩
Article dans une revueAbstractPURPOSE: Little evidence of increased thrombotic risk is available in COVID-19 patients. Our purpose was to assess thrombotic risk in severe forms of SARS-CoV-2 infection. METHODS: All patients referred to 4 intensive care units (ICUs) from two centers of a French tertiary hospital for acute respiratory distress syndrome (ARDS) due to COVID-19 between March 3rd and 31st 2020 were included. Medical history, symptoms, biological data and imaging were prospectively collected. Propensity score matching was performed to analyze the occurrence of thromboembolic events between non-COVID-19 ARDS and COVID-19 ARDS patients. RESULTS: 150 COVID-19 patients were included (122 men, median age 63 [53; 71] years, SAPSII 49 [37; 64] points). Sixty-four clinically relevant thrombotic complications were diagnosed in 150 patients, mainly pulmonary embolisms (16.7%). 28/29 patients (96.6%) receiving continuous renal replacement therapy experienced circuit clotting. Three thrombotic occlusions (in 2 patients) of centrifugal pump occurred in 12 patients (8%) supported by ECMO. Most patients (> 95%) had elevated D-dimer and fibrinogen. No patient developed disseminated intravascular coagulation. Von Willebrand (vWF) activity, vWF antigen and FVIII were considerably increased, and 50/57 tested patients (87.7%) had positive lupus anticoagulant. Comparison with non-COVID-19 ARDS patients (n = 145) confirmed that COVID-19 ARDS patients (n = 77) developed significantly more thrombotic complications, mainly pulmonary embolisms (11.7 vs. 2.1%, p < 0.008). Coagulation parameters significantly differed between the two groups. CONCLUSION: Despite anticoagulation, a high number of patients with ARDS secondary to COVID-19 developed life-threatening thrombotic complications. Higher anticoagulation targets than in usual critically ill patients should therefore probably be suggested.
Inappropriate shock due to quadruple counting in a patient with subcutaneous implantable cardioverter-defibrillator and a dual-chamber pacemaker
Halim Marzak, Olivier Morel, Laurence Jesel
EP-Europace, 2020, 22 (5), ⟨10.1093/europace/euaa028⟩
Article dans une revueUne complication tardive de la Covid-19
Karine Alamé, Florent Baicry, Mathieu Oberlin, Pascal Bilbault, Pierrick Le Borgne
Médecine Thérapeutique, 2020, 26 (3), pp.188-189
Article dans une revueLes réseaux sociaux, nouvelles sources d'informations médicales des patients : un outil d'avenir ou un danger à grande échelle ?
Inès Meisels, Anne-Marie Musset, Damien Offner
clinic, 2020, 41, pp.214-221
Article dans une revueAbstractFacebook, Twitter, Instagram ou encore YouTube pour n’en citer que certains, voici des médias qui ont révolutionne nos sociétés au cours de ces dix dernières années. Plus de 50% des vidéos présentes sur YouTube s’intéressant au domaine bucco-dentaire sont de mauvaise qualité informative. C’est ce qu’a montré une étude évaluant 100 de ces vidéos. Ce travail a mené à la création de l’AVASN (Agence de veille et d’actions sanitaires numériques) afin de mieux encadrer ces informations.
Experimental periodontitis in Msx2 mutant mice induces alveolar bone necrosis
Linda Korah, Nawel Amri, Isaac Bugueno Valdebenito, Dominique Hotton, Henri Tenenbaum, Olivier Huck, Ariane Berdal, Jean-Luc Davideau
Journal of periodontology, 2020, 91 (5), pp.693-704. ⟨10.1002/JPER.16-0435⟩
Article dans une revueAbstractBackground Msx2 homeoprotein is a key transcription factor of dental and periodontal tissue formation and is involved in many molecular pathways controlling mineralized tissue homeostasis such as Wnt/sclerostin pathway. This study evaluated the effect of Msx2-null mutation during experimental periodontitis in mice. Methods Experimental periodontitis was induced for 30 days in wild-type and Msx2 knock-in Swiss mice using Porphyromonas gingivalis infected ligatures. In knock-in mice, Msx2 gene was replaced by n-LacZ gene encoding beta-galactosidase. Periodontal tissue response was assessed by histomorphometry, tartrate-resistant acid phosphatase histoenzymology, beta-galactosidase, sclerostin immunochemistry, and terminal deoxynucleotidyl transferase-mediated dUTP nickend labeling assay. Expression of Msx2 gene expression was also evaluated in human gingival biopsies using RT-qPCR. Results During experimental periodontitis, osteonecrosis area and osteoclast number were significantly elevated in knock-in mice compared with wild-type mice. Epithelial downgrowth and bone loss was similar. Sclerostin expression in osteocytes appeared to be reduced during periodontitis in knock-in mice. Msx2 expression was detected in healthy and inflamed human gingival tissues. Conclusion These data indicated that Msx2 pathway influenced periodontal tissue response to experimental periodontitis and appeared to be a protective factor against alveolar bone osteonecrosis. As shown in other inflammatory processes such as atherothrombosis, genes initially characterized in early development could also play an important role in human periodontal pathogenesis.
Age at diagnosis of Brugada syndrome: Influence on clinical characteristics and risk of arrhythmia
Mathilde Minier, Vincent Probst, Pauline Berthome, Romain Tixier, Jean Briand, Olivier Geoffroy, Nicolas Clementy, Jacques Mansourati, Laurence Jesel, Jean-Marc Dupuis, Paul Bru, Florence Kyndt, Béatrice Guyomarch, Aurélie Thollet, Nathalie Behar, Philippe Mabo, Frédéric Sacher, Jean-Baptiste Gourraud
Heart Rhythm, 2020, 17 (5), pp.743-749. ⟨10.1016/j.hrthm.2019.11.027⟩
Article dans une revueMinimally invasive surgery for left ventricular assist device implantation is safe and associated with a decreased risk of right ventricular failure
Adrien Carmona, Tam Hoang Minh, Stéphanie Perrier, Clément Schneider, Sandrine Marguerite, Gharib Ajob, Cristinar Mircea, Paul-Michel Mertes, Darmesh Ramlugun, Joseph Atlan, Jean-Jacques von Hunolstein, Eric Epailly, Jean-Philippe Mazzucotelli, Michel Kindo
Journal of Thoracic Disease, 2020, 12 (4), pp.1496-1506. ⟨10.21037/jtd.2020.02.32⟩
Article dans une revueAbstractBackground: Right ventricular failure (RVF) after left ventricular assist device (LVAD) implantation is associated with significant mortality and morbidity. The objective of this study was to determine pre-and postoperative risk factors associated with the occurrence of RVF after LVAD implantation. Methods: This retrospective study included 68 patients who received LVADs between 2010 and 2018 either for bridge to transplant (40 patients, 58.8%) or bridge to destination therapy (28 patients, 41.2%). RVF after LVAD implantation was defined according to the INTERMACS classification. The primary endpoint was the occurrence of RVF. The secondary endpoints were hospital mortality and morbidity and long-term survival. Results: The majority of patients (61.8%) had an INTERMACS profile 1 (36.8%) or 2 (25.0%). The LVAD was implanted either by sternotomy (37 patients, 54.4%) or thoracotomy (31 patients, 45.6%). RVF after LVAD implantation was observed in 32 patients (47.1%). In univariate analysis, an elevated serum glutamic oxaloacetic transaminase (SGOT) (P=0.028) and a high preoperative vasoactive inotropic score (VIS) (P=0.028) were significantly associated with an increased risk of RVF, whereas the implantation of LVAD through a thoracotomy approach was associated with a significant reduction in this risk (P=0.006). The multivariate analysis demonstrated that only the thoracotomy approach was significantly associated with decreased risk of RVF (odds ratio =0.33, 95% confidence interval: 0.17-0.96; P=0.042). Hospital mortality was 53.1% and 5.6% in the RVF and control groups, respectively (P<0.0001). The incidence of stroke and postoperative acute renal failure were significantly increased in the RVF group compared with the control group. The survival after LVAD implantation was 33.5%±9.0% and 85.4%±6.0% at 1 year in the RVF and control groups, respectively (P<0.0001). Conclusions: LVAD implantation by thoracotomy significantly reduced the risk of postoperative RVF.
Dialkylcarbamoyl chloride‐coated versus alginate dressings after pilonidal sinus excision: a randomized clinical trial (SORKYSA study)
Benoit Romain, M. Mielcarek, Jean-Baptiste Delhorme, Nicolas Meyer, Cecile Brigand, Serge Rohr, N. Chilintseva, T. Knepfler, S. Manfredelli, B. Simeu, B. Tréchot, E. Triki, E. Valero, M. Di Liberatore, S. Gergeanu, R. Ionescu, G. Mihaescu, M. Nicolae, D. Patrice, I. Zeca, P. Barsotti, S. Dan
BJS Open, 2020, 4 (2), pp.225-231. ⟨10.1002/bjs5.50259⟩
Article dans une revueEvaluation of anti-Xa activity after injection of a heparin lock for dialysis catheters in intensive care: A prospective observational study
Julien Bovet, Agnès Soudry-Faure, Hamid Merdji, Eléa Ksiazek, Jean-Pierre Quenot, Ferhat Meziani, Amélie Cransac, Julie Helms
Thrombosis Research, 2020, 188, pp.82-84. ⟨10.1016/j.thromres.2020.02.006⟩
Article dans une revueSystemic Inflammatory Response Syndrome Is a Major Determinant of Cardiovascular Outcome in Takotsubo Syndrome
Lucie Lachmet-Thébaud, Benjamin Marchandot, Kensuke Matsushita, Charlotte Dagrenat, Marilou Peillex, Chisato Sato, Antonin Trimaille, Antje Reydel, Annie Trinh, Patrick Ohlmann, Laurence Jesel, Olivier Morel
Circulation Journal, 2020, 84 (4), pp.592-600. ⟨10.1253/circj.CJ-19-1088⟩
Article dans une revueAbstractBACKGROUND: Recent insights have emphasized the importance of inflammatory response in takotsubo syndrome (TTS). We sought to evaluate the predictors of systemic inflammatory response syndrome (SIRS) and its impact on cardiovascular mortality after TTS.Methods and Results:The 215 TTS patients were retrospectively included between September 2008 and January 2018. SIRS was diagnosed in 96 patients (44.7%). They had lower left ventricular ejection fraction (LVEF) on admission (34.5% vs. 41.9%; P<0.001) and higher peak brain natriuretic peptide and troponin. At a median follow-up of 518 days, SIRS was associated with increased in-hospital mortality (14.6% vs. 5.0%; P=0.019), overall mortality (29.4% vs. 10.8%; P=0.002), and cardiovascular mortality (10.6% vs. 2.1%; P=0.026). A history of cancer (OR, 3.36; 95% CI: 1.54-7.31; P=0.002) and LVEF <40% at admission (OR, 2.31; 95% CI: 1.16-4.58; P=0.017) were identified as independent predictors of SIRS. On multivariate Cox regression analysis, SIRS (HR, 12.8; 95% CI: 1.58-104; P=0.017), age (HR, 1.09; 95% CI: 1.02-1.16; P=0.01), and LVEF <40% at discharge (HR, 9.88; 95% CI: 2.54-38.4; P=0.001) were independent predictors of cardiovascular death. CONCLUSIONS: SIRS was found in a large proportion of TTS patients and was associated with enhanced myocardial damage and adverse outcome in the acute phase. At long-term follow-up, SIRS remained an independent factor of cardiovascular death.
Beta-Cell-Specific Expression of Nicotinamide Adenine Dinucleotide Phosphate Oxidase 5 Aggravates High-Fat Diet-Induced Impairment of Islet Insulin Secretion in Mice
Karim Bouzakri, Christelle Veyrat-Durebex, Chet Holterman, Caroline Arous, Charlotte Barbieux, Domenico Bosco, Jordi Altirriba, Mohamed Alibashe, Benjamin B. Tournier, Jenny E. Gunton, Sarah Mouche, William Bietiger, Alexis Forterre, Thierry Berney, Michel Pinget, Gerhard Christofori, Christopher Kennedy, Ildiko Szanto
Antioxidants and Redox Signaling, 2020, 32 (9), pp.618-635. ⟨10.1089/ars.2018.7579⟩
Article dans une revueAgeing enhances the shedding of splenocyte microvesicles with endothelial pro-senescent effect that is prevented by a short-term intake of omega-3 PUFA EPA:DHA 6:1
Abdul Wahid Qureshi, Raed Adill Hannon Altamimy, Ali El Habhab, Hanine El Itawi, Muhammad Akmal Farooq, Fatiha Zobairi, Hira Hasan, Lamia Amoura, Mohamad Kassem, Cyril Auger, Valérie B. Schini-Kerth, Florence Toti
Biochemical Pharmacology, 2020, 173, pp.113734. ⟨10.1016/j.bcp.2019.113734⟩
Article dans une revueAbstractAgeing enhances the shedding of splenocyte microvesicles with endothelial pro-senescent effect that is prevented by a short-term intake of omega-3 PUFA EPA:DHA 6:1,
Intake of omega-3 formulation EPA:DHA 6:1 by old rats for 2 weeks improved endothelium-dependent relaxations and normalized the expression level of ACE/AT1R/NADPH oxidase and the formation of ROS in the mesenteric artery
Muhammad A Farooq, Sébastien Gaertner, Lamia Amoura, Zahid R Niazi, Sin-Hee Park, Abdul W Qureshi, Min-Ho Oak, Florence Toti, Valérie B Schini-Kerth, Cyril Auger
Biochemical Pharmacology, 2020, 173, pp.113749. ⟨10.1016/j.bcp.2019.113749⟩
Article dans une revueAbstractOmega-3 polyunsaturated fatty acids (PUFAs) including eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have been shown to protect the cardiovascular system, in part, by stimulating the endothelial formation of nitric oxide (NO). EPA:DHA 6:1 has been identified as a potent omega 3 PUFA formulation to induce endothelium-dependent vasorelaxation and activation of endothelial NO synthase (eNOS). This study examined whether intake of EPA:DHA 6:1 (500 mg/kg/day) for 2 weeks improves an established endothelial dysfunction in old rats (20 months old), and, if so, the underlying mechanism was subsequently determined. In the main mesenteric artery rings, an endothelial dysfunction characterized by a blunted NO component, an abolished endothelium-dependent hyperpolarization component, and increased endothelium-dependent contractile responses (EDCFs) are observed in old rats compared to young rats. Age-related endothelial dysfunction was associated with increased vascular formation of reactive oxygen species (ROS) and expression of eNOS, components of the local angiotensin system, senescence markers, and cyclooxygenase-2 (COX-2), and the downregulation of COX-1. The EPA:DHA 6:1 treatment improved the NO-mediated relaxation, reduced the EDCF-dependent contractile response and the vascular formation of ROS, and normalized the expression level of all target proteins in the old arterial wall. Thus, the present findings indicate that a 2-week intake of EPA:DHA 6:1 by old rats restored endotheliumdependent NO-mediated relaxations, most likely, by preventing the upregulation of the local angiotensin system and the subsequent formation of ROS.
Efficacy and Safety of Tumor Necrosis Factor Antagonists in Treatment of Internal Fistulizing Crohn's Disease
Guillaume Bouguen, Audrey Huguet, Aurelien Amiot, Stéphanie Viennot, Franck Cholet, Maria Nachury, Mathurin Flamant, Jean-Marie Reimund, Véronique Desfourneaux, Arnaud Boureille, Laurent Siproudhis
Clinical Gastroenterology and Hepatology, 2020, 18 (3), pp.628-636. ⟨10.1016/j.cgh.2019.05.027⟩
Article dans une revueAbstractBackground & aims - Few data are available on the effects of tumor necrosis factor (TNF) antagonist therapy for patients with internal fistulizing Crohn's disease (CD) and there is debate regarding the risk of abscess. We aimed to assess the long-term efficacy and safety of anti-TNF therapy for patients with internal fistulas. Methods - We performed a retrospective study of data collected from the Groupe d'Etude Thérapeutique des Affections Inflammatoires Digestives trial, from January 1, 2000, through December 31, 2017. Our final analysis included 156 patients who began treatment with an anti-TNF agent for CD with internal fistula (83 men; median disease duration, 4.9 y). The primary end point was the onset of a major abdominal surgery. Secondary analysis included disappearance of the fistula tract during follow-up evaluation and safety. The Kaplan-Meier method was used for statistical analysis. Results - After a median follow-up period of 3.5 years, 68 patients (43.6%) underwent a major abdominal surgery. The cumulative probabilities for being surgery-free were 83%, 64%, and 51% at 1, 3, and 5 years, respectively. A concentration of C-reactive protein >18 mg/L, an albumin concentration <36 g/L, the presence of an abscess at the fistula diagnosis, and the presence of a stricture were associated independently with the need for surgery. The cumulative probabilities of fistula healing, based on imaging analyses, were 15.4%, 32.3%, and 43.9% at 1, 3, and 5 years, respectively. Thirty-two patients (20.5%) developed an intestinal abscess and 4 patients died from malignancies (3 intestinal adenocarcinomas). One patient died from septic shock 3 months after initiation of anti-TNF therapy. Conclusions - In a retrospective analysis of data from a large clinical trial, we found that anti-TNF therapy delays or prevents surgery for almost half of patients with CD and luminal fistulas. However, anti-TNF therapy might increase the risk for sepsis-related death or gastrointestinal malignancies.
Quadricuspid aortic valve: Surgical repair with aortic root reimplantation in an adult
Stephanie L Perrier, Philippe Billaud, Michel Kindo, Jean Philippe Mazzucotelli
JTCVS Techniques, 2020, 1, pp.28 - 30. ⟨10.1016/j.xjtc.2019.11.010⟩
Article dans une revueAbstractQuadricuspid aortic valve is rare, leading mostly to aortic regurgitation. 1 We present herein an original technique, in association with aortic root reimplantation, for the repair of a severely regurgitant quadricuspid aortic valve with dilated aortic root. CASE REPORT A 39-year-old man with history of systemic hypertension treated with angiotensin-converting enzyme inhibitors, depression, moderate tobacco and alcohol use, presented with New York Heart Association stage II or III dyspnea and asthenia. A diastolic murmur was noted. Transthoracic and transesophageal echocardiography showed severe aortic valve regurgitation (Figure 1, A) resulting from central coaptation defect (Figure 1, B). The aortic valve had 4 cusps of equivalent size (Hurwitz classification type A 2) (Figure 1, C and D). The aortic root, sinotubular junction, and ascending aorta (44 mm, 43 mm, and 43 mm, respectively) and left ventricle were dilated (left ventricular end diastolic diameter, 70 mm). Left ventricular ejection fraction was 50%. Cardiac magnetic resonance imaging confirmed these findings (Figure 1, D). He was thus referred for surgery. Surgical repair was undertaken through median sternotomy with cardiopulmonary bypass between the aorta and the right atrium (208 minutes) with intermittent retrograde cold blood cardioplegia through coronary sinus. Aortic crossclamp time was 165 minutes. The ascending
Effect of Intravenous Interferon β-1a on Death and Days Free From Mechanical Ventilation Among Patients With Moderate to Severe Acute Respiratory Distress Syndrome
V. Marco Ranieri, Ville Pettilä, Matti Karvonen, Juho Jalkanen, Peter Nightingale, David Brealey, Jordi Mancebo, Ricard Ferrer, Alain Mercat, Nicolò Patroniti, Michael Quintel, Jean-Louis Vincent, Marjatta Okkonen, Ferhat Meziani, Giacomo Bellani, Niall Maccallum, Jacques Creteur, Stefan Kluge, Antonio Artigas-Raventos, Mikael Maksimow, Ilse Piippo, Kati Elima, Sirpa Jalkanen, Markku Jalkanen, Geoff Bellingan
JAMA Cardiology, 2020, 323 (8), pp.725. ⟨10.1001/jama.2019.22525⟩
Article dans une revueEmpagliflozin improved systolic blood pressure, endothelial dysfunction and heart remodeling in the metabolic syndrome ZSF1 rat
Sin-Hee Park, Muhammad Akmal Farooq, Sébastien Gaertner, Christophe Bruckert, Abdul Wahid Qureshi, Hyun-Ho Lee, Djamel Benrahla, Brigitte Pollet, Dominique Stephan, Patrick Ohlmann, Jean-Marc Lessinger, Eric Mayoux, Cyril Auger, Olivier Morel, Valérie B Schini-Kerth
Cardiovascular Diabetology, 2020, 19 (1), ⟨10.1186/s12933-020-00997-7⟩
Article dans une revueAbstractBackground: Empagliflozin (empa), a selective sodium-glucose cotransporter (SGLT)2 inhibitor, reduced cardiovascular mortality and hospitalization for heart failure in patients with type 2 diabetes at high cardiovascular risk independent of glycemic control. The cardiovascular protective effect of empa was evaluated in an experimental model of metabolic syndrome, the obese ZSF1 rat, and its' lean control. Methods: Lean and obese ZSF1 rats were either non-treated or treated with empa (30 mg/kg/day) for 6 weeks. Vascular reactivity was assessed using mesenteric artery rings, systolic blood pressure by tail-cuff sphygmomanometry, heart function and structural changes by echocardiography, and protein expression levels by Western blot analysis. Results: Empa treatment reduced blood glucose levels from 275 to 196 mg/dl in obese ZSF1 rats whereas normoglycemia (134 mg/dl) was present in control lean ZSF1 rats and was unaffected by empa. Obese ZSF1 rats showed increased systolic blood pressure, and blunted endothelium-dependent relaxations associated with the appearance of endothelium-dependent contractile responses (EDCFs) compared to control lean rats. These effects were prevented by the empa treatment. Obese ZSF1 rats showed increased weight of the heart and of the left ventricle volume without the presence of diastolic or systolic dysfunction, which were improved by the empa treatment. An increased expression level of senescence markers (p53, p21, p16), tissue factor, VCAM-1, SGLT1 and SGLT2 and a down-regulation of eNOS were observed in the aortic inner curvature compared to the outer one in the control lean rats, which were prevented by the empa treatment. In the obese ZSF1 rats, no such effects were observed. The empa treatment reduced the increased body weight and weight of lungs, spleen, liver and perirenal fat, hyperglycemia and the increased levels of total cholesterol and triglycerides in obese ZSF1 rats, and increased blood ketone levels and urinary glucose excretion in control lean and obese ZSF1 rats. Conclusion: Empa reduced glucose levels by 28% and improved both endothelial function and cardiac remodeling in the obese ZSF1 rat. Empa also reduced the increased expression level of senescence, and atherothrombotic markers at arterial sites at risk in the control lean, but not obese, ZSF1 rat.
Influence of deprivation on initial severity and prognosis of patients admitted to the ICU: the prospective, multicentre, observational IVOIRE cohort study
Jean-Pierre Quenot, Julie Helms, Guylaine Labro, Auguste Dargent, Nicolas Meunier-Beillard, Elea Ksiazek, Pierre-Edouard Bollaert, Guillaume Louis, Audrey Large, Pascal Andreu, Christophe Bein, Jean-Philippe Rigaud, Pierre Perez, Raphaël Clere-Jehl, Hamid Merdji, Hervé Devilliers, Christine Binquet, Ferhat Meziani, Isabelle Fournel
Annals of Intensive Care, 2020, 10 (1), ⟨10.1186/s13613-020-0637-1⟩
Article dans une revueAbstractBackground The influence of socioeconomic status on patient outcomes is unclear. We assessed the impact of socioeconomic deprivation on severity of illness at intensive care unit (ICU) admission, and on the risk of death at 3 months after ICU admission. Methods The IVOIRE study was a prospective, observational, multicentre cohort study in the ICU of 8 participating hospitals in France, including patients aged >= 18 years admitted to the ICU and receiving at least one life support therapy for organ failure. The primary outcomes were severity at admission (assessed by SAPSII score), and mortality at 3 months. Socioeconomic data were obtained from interviews with patients or family. Deprivation was assessed using the EPICES score. Results Among 1294 patents included between 2013 and 2016, 629 (48.6%) were classed as deprived and differed significantly from non-deprived subjects in terms of sociodemographic characteristics and pre-existing conditions. The mean SAPS II score at admission was 50.1 +/- 19.4 in deprived patients and 52.3 +/- 17.3 in non-deprived patients, with no significant difference by multivariable analysis (beta = - 1.85 [95% CI - 3.86; + 0.16, p = 0.072]). The proportion of death was 31.1% at 3 months, without significant differences between deprived and non-deprived patients, even after adjustment for confounders. Conclusions Deprivation is frequent in patients admitted to the ICU and is not associated with disease severity at admission, or with mortality at 3 months between deprived and non-deprived patients. Trial registration The IVOIRE cohort is registered with ClinicalTrials.gov under the identifier NCT01907581, registration date 17/7/2013
Temporomandibular Joint Damage in K/BxN Arthritic Mice
Sabine Bopp-Kuchler, Alexandre Mariotte, Marion Strub, Chrystelle Po, Aurore de Cauwer, Georg Schulz, Xavier van Bellinghen, Florence Fioretti, François Clauss, Philippe Georgel, Nadia Benkirane-Jessel, Fabien Bornert
International Journal of Oral Science, 2020, ⟨10.1038/s41368-019-0072-z⟩
Article dans une revueAbstractRheumatoid arthritis (RA) is an autoimmune disease affecting 1% of the world population and is characterized by chronic inflammation of the joints sometimes accompanied by extra-articular manifestations. K/BxN mice, originally described in 1996 as a model of polyarthritis, exhibit knee joint alterations. The aim of this study was to describe temporomandibular joint (TMJ) inflammation and damage in these mice. We used relevant imaging modalities, such as micro-magnetic resonance imaging (μMRI) and micro-computed tomography (μCT), as well as histology and immunofluorescence techniques to detect TMJ alterations in this mouse model. Histology and immunofluorescence for Col-I, Col-II, and aggrecan showed cartilage damage in the TMJ of K/BxN animals, which was also evidenced by μCT but was less pronounced than that seen in the knee joints. μMRI observations suggested an increased volume of the upper articular cavity, an indicator of an inflammatory process. Fibroblast-like synoviocytes (FLSs) isolated from the TMJ of K/BxN mice secreted inflammatory cytokines (IL-6 and IL-1β) and expressed degradative mediators such as matrix metalloproteinases (MMPs). K/BxN mice represent an attractive model for describing and investigating spontaneous damage to the TMJ, a painful disorder in humans with an etiology that is still poorly understood.
Porphyromonas gingivalis triggers the shedding of inflammatory endothelial microvesicles that act as autocrine effectors of endothelial dysfunction
Isaac Maximiliano Bugueno, Fatiha Zobairi El-Ghazouani, Fareeha Batool, Hanine El Itawi, Eduardo Anglés-Cano, Nadia Benkirane-Jessel, Florence Toti, Olivier Huck
Scientific Reports, 2020, 10 (1), pp.1778. ⟨10.1038/s41598-020-58374-z⟩
Article dans une revueAbstractA link between periodontitis and atherothrombosis has been highlighted. The aim of this study was to determine the influence of Porphyromonas gingivalis on endothelial microvesicles (EMVPg) shedding and their contribution to endothelial inflammation. Endothelial cells (EC) were infected with P. gingivalis (MOI = 100) for 24 h. EMVPg were isolated and their concentration was evaluated by prothrombinase assay. EMVPg were significantly increased in comparison with EMVCtrl shedded by unstimulated cells. While EMVCtrl from untreated EC had no effect, whereas, the proportion of apoptotic EC was increased by 30 nM EMVPg and viability was decreased down to 25%, a value elicited by P. gingivalis alone. Moreover, high concentration of EMVPg (30 nM) induced a pro-inflammatory and pro-oxidative cell response including up-regulation of TNF-α, IL-6 and IL-8 as well as an altered expression of iNOS and eNOS at both mRNA and protein level. An increase of VCAM-1 and ICAM-1 mRNA expression (4.5 folds and 3 folds respectively (p < 0.05 vs untreated) was also observed after EMVPg (30 nM) stimulation whereas P. gingivalis infection was less effective, suggesting a specific triggering by EMVPg. Kinasome analysis demonstrated the specific effect induced by EMVPg on main pro-inflammatory pathways including JNK/AKT and STAT. EMVPg are effective pro-inflammatory effectors that may have detrimental effect on vascular homeostasis and should be considered as potential autocrine and paracrine effectors involved in the link between periodontitis and atherothrombosis.
Anticancer activity of ruthenium and osmium cyclometalated compounds: identification of ABCB1 and EGFR as resistance mechanisms
Cynthia Licona, Jean-Baptiste Delhorme, Gilles Riegel, Vania Vidimar, Ricardo Cerón-Camacho, Bastien Boff, Aina Venkatasamy, Catherine Tomasetto, Priscila da Silva Figueiredo Celestino Gomes, Didier Rognan, Jean-Noël Freund, Ronan Le Lagadec, Michel Pfeffer, Isabelle Gross, Georg Mellitzer, Christian Gaiddon
Inorganic Chemistry Frontiers, 2020, 7 (3), pp.678-688. ⟨10.1039/C9QI01148J⟩
Article dans une revueAkkermansia muciniphila reduces Porphyromonas gingivalis ‐induced inflammation and periodontal bone destruction
Olivier Huck, Hannah Mulhall, George Rubin, Zev Kizelnik, Radha Iyer, John D. Perpich, Nasreen Haque, Patrice D. Cani, Willem M. Vos, Salomon Amar
Journal of Clinical Periodontology, 2020, 47 (2), pp.202-212. ⟨10.1111/jcpe.13214⟩
Article dans une revueAbstractAim: Akkermansia muciniphila is a beneficial gut commensal, whose anti-inflammatory properties have recently been demonstrated. This study aimed to evaluate the effect of A. muciniphila on Porphyromonas gingivalis elicited inflammation. Material and methods: In lean and obese mice, A. muciniphila was administered in P. gingivalis-induced calvarial abscess and in experimental periodontitis model (EIP). Bone destruction and inflammation were evaluated by histomorphometric analysis. In vitro, A. muciniphila was co-cultured with P. gingivalis, growth and virulence factor expression was evaluated. Bone marrow macrophages (BMMϕ) and gingival epithelial cells (TIGK) were exposed to both bacterial strains, and the expression of inflammatory mediators, as well as tight junction markers, was analysed. Results: In a model of calvarial infection, A. muciniphila decreased inflammatory cell infiltration and bone destruction. In EIP, treatment with A. muciniphila resulted in a decreased alveolar bone loss. In vitro, the addition of A. muciniphila to P. gingivalis-infected BMMϕ increased anti-inflammatory IL-10 and decreased IL-12. Additionally, A. muciniphila exposure increases the expression of junctional integrity markers such as integrin-β1, E-cadherin and ZO-1 in TIGK cells. A. muciniphila co-culture with P. gingivalis reduced gingipains mRNA expression. Discussion: This study demonstrated the protective effects of A. muciniphila administration and may open consideration to its use as an adjunctive therapeutic agent to periodontal treatment.
Independent prognostic value of ultra-sensitive quantification of tumor pretreatment T790M subclones in EGFR mutated non-small cell lung cancer (NSCLC) treated by first/second generation TKI, depends on variant allele frequency (VAF): results of the French Cooperative Thoracic Intergroup (IFCT) Biomarkers France project
Michèle Beau-Faller, Erwan Pencreach, Charlotte Leduc, Hélène Blons, Jean-Philippe Merlio, Pierre-Paul Bringuier, Florence de Fraipont, Fabienne Escande, Antoinette Lemoine Phd I , L, Houcine Ouafik, Marc Denis, Paul Hofman, Roger Lacave, Samia Melaabi, Alexandra Langlais, Pascale Missy, Franck Morin, Denis Moro-Sibilot, Fabrice Barlesi, Jacques Cadranel
Lung Cancer, 2020, pp.19-26
Article dans une revueAbstractObjectives: T790M mutations in EGFR-mutated non-small cell lung cancer (NSCLC) account for nearly 50% of acquired resistance mechanisms to EGFR-TKIs. Earlier studies suggested that tumor T790M could also be detected in TKI-naïve EGFR-mutated NSCLC. The aim of the study is to assess the prevalence and clinical significance of quantification of tumor pre-treatment T790M subclones. Materials and methods: We analyzed 366 EGFR-mutated NSCLC patients of the real-life IFCT Biomarkers France study with available pre-treatment formalin-fixed paraffinembedded (FFPE) tumor DNA before treatment by first/second-generation EGFR-TKI. We used ultra-sensitive Droplet Digital Polymerase Chain Reaction (ddPCR) QX200 (BIO-RAD®, Hercules, CA, USA). All samples were tested in duplicate. Results: ddPCR identified T790M in 19/240 specimens (8%). T790M-positive and T790Mnegative populations were not different for clinical baseline characteristics. T790M Variant Allele Frequency (VAF) was >0.01%<0.1%, >0.1%<1%, >1%<10%, and >10% in five (26.3%), six (31.6%), six (31.6%), and two (10.5%) patients, respectively. T790M VAF was >0.1% in 11/13 (84%) patients with rapid (<3 months) or usual progression (3-20 months) compared to 0/3 with low progression (>20 months) (p=0.02). In a Cox model, T790M mutation positivity was correlated with overall survival (OS) and progression-free survival (PFS) for 10% > VAF >1% (hazard ratio [HR]=2.83, 95% confidence interval [CI] 1. 13-7.07, p=0.03; HR=3.62, 95%CI 1.43-4.92, p=0.007, respectively) and for VAF >10% (HR=19. 14, 95%CI 4.35-84.26, p<0.001; HR=17.89, 95%CI 2.21-144.86, p=0.007, respectively). Conclusion: Ultra-sensitive detection of tumor T790M mutation concerned 8% of EGFRmutated TKI-naïve NSCLC patients and has a negative prognostic value only for T790M VAF over 1%.
Oral Intake of EPA:DHA 6:1 by Middle-Aged Rats for One Week Improves Age-Related Endothelial Dysfunction in Both the Femoral Artery and Vein: Role of Cyclooxygenases
Sébastien Gaertner, Cyril Auger, Muhammad A Farooq, Brigitte Pollet, Sonia Khemais-Benkhiat, Zahid R Niazi, Sophie Schrevens, Sin-Hee Park, Florence Toti, Dominique Stephan, Valérie B Schini-Kerth
International Journal of Molecular Sciences, 2020, 21, pp.113749. ⟨10.3390/ijms21030920⟩
Article dans une revueAbstractIn humans, aging is associated with endothelial dysfunction and an increased risk of venous thromboembolism. Although intake of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) at a ratio of 6:1 by old rats improved the endothelial dysfunction in arteries, the impact on veins remains unclear. Eight-month-old male Wistar rats were either untreated or orally administered corn oil, EPA:DHA 1:1, or EPA:DHA 6:1 (500 mg/kg/d) for seven days. Vascular reactivity was studied by myography. In middle-aged femoral artery rings, acetylcholine caused a partial relaxation at low concentrations and a contractile response at high concentrations, whereas in the old femoral vein only a partial relaxation was observed. The EPA:DHA 6:1 treatment blunted the contractile response to acetylcholine in the middle-aged femoral artery and both EPA:DHA 6:1 and 1:1 increased the relaxation to acetylcholine in the old femoral vein. No such effects were observed with corn oil. Both the non-selective cyclooxygenase inhibitor indomethacin and the COX-1 inhibitor SC-560 increased the relaxation to acetylcholine in the middle-aged femoral artery whereas the COX-2 inhibitor NS-398 increased that in the middle-aged femoral vein. In conclusion, our results indicate that aging is associated with an endothelial dysfunction in the femoral artery and vein, which can be improved by EPA:DHA 6:1 treatment-most likely via a cyclooxygenase-dependent mechanism.
Glycaemic control in diabetic rats treated with islet transplantation using plasma combined with hydroxypropylmethyl cellulose hydrogel
Anaïs Schaschkow, Séverine Sigrist, Carole Mura, Julien Barthès, Nihal Engin Vrana, Élodie Czuba, Florent Lemaire, Romain Neidl, Caroline Dissaux, Anne Lejay, Philippe Lavalle, Catherine Bruant-Rodier, Karim Bouzakri, Michel Pinget, Elisa Maillard
Acta Biomaterialia, 2020, 102, pp.259-272. ⟨10.1016/j.actbio.2019.11.047⟩
Article dans une revueAbstractIslet transplantation is one of the most efficient cell therapies used in clinics and could treat a large proportion of patients with diabetes. However, it is limited by the high requirement of pancreas necessary to provide the sufficient surviving islet mass in the hepatic tissue and restore normoglycaemia. Reduction in organ procurement requirements could be achieved by extrahepatic transplantation using a biomaterial that enhances islet survival and function. We report a plasma-supplemented hydroxypropyl methylcellulose (HPMC) hydrogel, engineered specifically using a newly developed technique for intra-omental islet infusion, known as hOMING (h-Omental Matrix Islet filliNG). The HPMC hydrogel delivered islets with better performance than that of the classical intrahepatic infusion. After the validation of the HPMC suitability for islets in vivo and in vitro, plasma supplementation modified the rheological properties of HPMC without affecting its applicability with hOMING. The biomaterial association was proven to be more efficient both in vitro and in vivo, with better islet viability and function than that of the current clinical intrahepatic delivery technique. Indeed, when the islet mass was decreased by 25% or 35%, glycaemia control was observed in the group of plasma-supplemented hydrogels, whereas no regulation was observed in the hepatic group. Plasma gelation, observed immediately post infusion, decreased anoïkis and promoted vascularisation. To conclude, the threshold mass for islet transplantation could be decreased using HPMC-Plasma combined with the hOMING technique. The simplicity of the hOMING technique and the already validated use of its components could facilitate its transfer to clinics.
Adverse events reporting in stage III NSCLC trials investigating surgery and radiotherapy
Thomas Iseli, Thierry Berghmans, Markus Glatzer, Achim Rittmeyer, Gilbert Massard, Valérie Durieux, Thomas Buchsbaum, Paul Martin Putora
ERJ Open Research, 2020, 6 (3), ⟨10.1183/23120541.00010-2020⟩
Article dans une revueAbstractBackground Current treatment options for stage III non-small cell lung cancer (NSCLC) consist of different combinations of chemotherapy, surgery, radiotherapy and immunotherapy. Treatment choices are highly individual decisions, in which adverse events (AEs) are relevant for decision-making. This study aims to analyse reporting of AEs in prospective stage III NSCLC trials, focussing on trials including radiotherapy and/or surgery. Methods PubMed was searched for prospective studies dealing with stage III NSCLC from January 1987 to April 2019. Meta-analyses were screened as a positive control. Pearson's Chi-squared test and smooth kernel distribution were used to estimate distributions. Data was resampled using bootstrapping. Results Out of 1193 initially identified studies, 119 met the inclusion criteria. Of these, 31 had a surgical procedure in any study arm. Grade 3 and 4 AEs were reported in 94.12% and 92.44% of the included studies, respectively. Reporting of grade 5 AEs was provided in 87.39% of cases. Grade 1 and 2 AEs were less commonly reported at 53.78% and 63.03%, respectively. One study did not mention any AEs. Of the 31 treatment arms including any form of surgery, AEs were not reported in 10. Overall, 231 different AE items were reported, only 18 of them were included in at least 20% of the analysed studies. Conclusion Overall, AE reporting in stage III NSCLC was inconsistent and inhomogeneous. Studies including surgical study arms often reported only treatment-related deaths in regards of surgical AEs. Underreporting of AEs prohibits the extraction of patient-relevant information for decision-making and represents a suboptimal use of invested resources.
The social and clinical impact of the COVID-19 epidemic on the Strasbourg lung transplant cohort: A single-center retrospective cohort study
Benjamin Renaud-Picard, Floriane Gallais, Marianne Riou, Eva Chatron, Tristan Degot, Sophie Freudenberger, Michele Porzio, Armelle Schuller, Julien Stauder, Sandrine Hirschi, Romain Kessler
Clin Transplant, 2020, 34 (12), ⟨10.1111/ctr.14119⟩
Article dans une revueAbstractThe clinical and social impacts of the COVID-19 epidemic on lung transplant (LTx) recipients remain poorly known. We aimed to evaluate its social, clinical, and behavioral consequences on the LTx patients followed in Strasbourg university hospital. A questionnaire was used to collect details concerning patients' lifestyles, their protection methods used to avoid COVID-19 contamination, and clinical infection-related information for March 2020. A specific score was created to quantify patients' contacts and the associated risk of infectious contagion. Data were collected from 322 patients (91.2%). A majority reported a higher application than usual of social distancing and barrier measures. 43.8% described infectious-related symptoms and 15.8% needed an anti-infective treatment. There was no difference in symptom onset according to age, native lung disease, diabetes, or obesity. Nineteen patients were tested for COVID-19, and four were diagnosed positive, all with a favorable outcome. The infection risk contact score was higher for symptomatic patients (p: 0.007), those needing extra-medical appointments (p < .001), and those receiving anti-infective treatments (p = .02). LTx patients reported a careful lifestyle and did not seem at higher risk for COVID-19. Our score showed encouraging preliminary results and could become a useful tool for the usual infection-related follow-up of the LTx patients.
In lung transplantation, are pulmonary grafts from donors deceased from hanging as suitable as grafts from donors deceased from other causes?
João Santos Silva, Anne Olland, Gilbert Massard, Pierre-Emmanuel Falcoz
Interactive Cardiovascular and Thoracic Surgery, 2020, 30 (1), pp.30-32. ⟨10.1093/icvts/ivz218⟩
Article dans une revueAbstractAbstract A best evidence topic was constructed according to a structured protocol. The question addressed was whether pulmonary grafts from donors deceased from hanging offer the same benefit as grafts from donors deceased from other causes in lung transplantation. Of the 17 papers found, 4 provided the best evidence to answer the question. The authors, date, journal, country of publication, study type, group studied, relevant outcomes and results of these papers are tabulated. One study reported a large cohort of donors and analysed the outcomes by cause of death, reporting no differences in survival. The remaining 3 papers analysed observational studies on the outcomes of lung transplantation using pulmonary grafts from donors deceased from hanging, compared with donors deceased from other causes. No differences in the rates of post-transplantation pulmonary graft dysfunction and long-term overall survival were reported. Although the cohort of donors deceased from hanging is small, we conclude that these donors are an important contribution to the donor pool. Ex vivo lung perfusion may have a role in assessing graft viability in this scenario.
Nanosized zeolites as a gas delivery platform in a glioblastoma model
Clement Anfray, Sarah Komaty, Aurélien Corroyer-Dulmont, Moussa Zaarour, Charly Hélaine, Hayriye Özçelik, Clélia Allioux, Jérôme Toutain, Kamila Goldyn, Edwige Petit, Karim Bordji, Myriam Bernaudin, Valentin Valtchev, Omar Touzani, Svetlana Mintova, Samuel Valable
Biomaterials, 2020, 257, pp.120249. ⟨10.1016/j.biomaterials.2020.120249⟩
Article dans une revueAbstractApproaches able to counteract, at least temporarily, hypoxia, a well-known factor of resistance to treatment in solid tumors are highly desirable. Herein, we report the use of nanosized zeolite crystals as hyperoxic/hypercapnic gas carriers for glioblastoma. First, the non-toxic profile of nanosized zeolite crystals in living animals (mice, rats and non-human primates) and in various cell types is presented. Second, the ability of the nanosized zeolites to act as a vasoactive agent for a targeted re-oxygenation of the tumor after intravenous injection is shown. As attested by an MRI protocol, the zeolites were able to increase oxygenation and blood volume specifically within the brain tumor whilst no changes in the healthy-non tumoral brain-were observed. The first proof of concept for the use of metal-containing nanosized zeolites as a tool for vectorization of hyperoxic/hypercapnic gases in glioblastoma is revealed.
Drug-sponge lipid nanocarrier for in situ cargo loading and release using dynamic covalent chemistry
Fei Liu, Yosuke Niko, Redouane Bouchaala, Luc Mercier, Olivier Lefebvre, Bohdan Andreiuk, Thierry Vandamme, Jacky G Goetz, Nicolas Anton, Andrey Klymchenko
Angewandte Chemie International Edition, In press, ⟨10.1002/anie.202014259⟩
Article dans une revueAbstractCurrently, drug delivery strategies using nanocarriers (NCs) deal with encapsulation of cargo or its covalently modified prodrug. Here, we propose a concept of reversible pH-controlled capture and delivery of active cargo based on dynamic covalent chemistry inside lipid nano-droplets (nanoemulsions), coined as "drug sponge". We designed a highly lipophilic hydrazide (LipoHD) capable to react with a free cargo-ketone (fluorescent dye and doxorubicin drug) directly inside lipid NCs, yielding lipophilic hydrazone prodrug efficiently captured in the oil core. LipoHD-loaded NCs spontaneously accumulated cargo-ketones, yielding formulations stable against cargo leakage at pH 7.4, and further released their dye/drug cargo at low pH range (5.0-6.8) in solution and live cells. Doxorubicin-loaded drug-sponge NCs showed cytotoxicity in four cancer cell lines and capacity to inhibit tumor growth in subcutaneous xenografts of mice. Finally, unprecedented extraction of dye/drug cargos directly from cells and tissues (i.e. detoxification) was realized by the drug-sponge NCs.
Outcomes in 886 Critically Ill Patients After Near-Hanging Injury
Louise de Charentenay, Guillaume Schnell, Nicolas Pichon, Maleka Schenck, Pierrick Cronier, Sébastien Perbet, Jean Baptiste Lascarrou, Thomas Rossignol, Olivier Lesieur, Laurent Argaud, Gwenhaël Colin, Bernard Cholley, Jean Pierre Quenot, Hamid Merdji, Stein Silva, Michaël Piagnerelli, Jonathan Chelly, Marie Salvetti, Segolene Couraud, Nicolas Deye, Marc Danguy Des Déserts, Marine Paul, Guillaume Thiery, Marc Simon, Charlotte Martin, François Vincent, Vincent Das, Gwenaëlle Jacq, Frédéric Marc Jacobs, Alexis Soummer, Julien Mayaux, Pascal Beuret, Abdelkader Ouchenir, Caroline Durant, Michaël Darmon, Élie Azoulay, Bertrand Sauneuf, Cédric Daubin, Nicolas Mongardon, Lucie Biard, Alain Cariou, Thomas Geeraerts, Stéphane Legriel, Nicolas Girard, Martin Cour, Adriaan Prisacariu, Auguste Dargent, Ferhat Meziani, Thibaut Baudic, Philippe Vignon, Candice Belony, Charlene Leparq, Cécile Carre, Pauline Moriss, Emmanuelle Noel, Sébastien Cavelot, Delphine Bachelet, Quentin de Roux, Matthieu Resche-Rigon, Christophe Guitton, Bruno Mégarbane, Charles Cerf, Alexandre Demoule, Pierre Kalfon
Chest, 2020, 158 (6), pp.2404-2413. ⟨10.1016/j.chest.2020.07.064⟩
Article dans une revueAbstractBackground: Near-hanging experiences are life-threatening events about which few data are available. Research Question: What are the outcomes and early predictors of hospital mortality in critically ill patients who have undergone a near-hanging experience? Study Design and Methods: Adult patients who were resuscitated successfully after suicidal near-hanging injury admitted to 31 university or university-affiliated ICUs in France and Belgium between 1992 and 2014 were studied retrospectively. Patients were identified by searching the hospital databases for International Statistical Classification of Diseases and Related Health Problems, 9th and 10th revisions, codes and hospital charts for hanging. Logistic multivariate regression was performed to identify factors associated vital and functional outcomes at hospital discharge as the primary end points. Secondary outcomes were evaluation of temporal trends and identification of predictors of hospital mortality. Results: Of the 886 patients (181 women and 705 men; median age, 43 years; interquartile range, 34-52 years), 266 (30.0%) had attempted suicide previously, 600 (67.7%) had a diagnosed mental illness, and 55 (6.2%) attempted hanging while hospitalized. Median time from hanging awareness to unhanging was 0 min (interquartile range [IQR], 0-0; range, 0-82 min). Median Glasgow Coma Scale score was 3 (IQR, 3-5) at ICU admission. Hanging induced cardiac arrest in 450 of 886 patients (50.8%). Overall, 497 of 886 patients (56.1%) were alive at hospital discharge, including 479 of 497 patients (96.4%) with a favorable neurocognitive outcome (defined as a Glasgow Outcome Scale score of 4 or 5). By multivariate analysis, factors associated with hospital mortality were hanging-induced cardiac arrest (OR, 19.50; 95% CI, 7.21-60.90; P < .00001) and findings at ICU admission of glycemia level > 1.4 g/L (OR, 4.34; 95% CI, 1.82-10.81; P = .0007) and of lactate level > 3.5 mmol/L (OR, 9.98; 95% CI, 4.17-25.36; P < .00001). Interpretation: The findings from this large multicenter retrospective cohort emphasize the very high mortality after hanging injury chiefly because of hanging-induced cardiac arrest. However, patients who survive near-hanging experiences achieve excellent neurocognitive recovery. Studies of early neuroprotective strategies for patients who have undergone near-hanging experiences are warranted. Trial Registry: ClinicalTrials.gov; No.: NCT04096976; URL: www.clinicaltrials.gov
Two-Year Outcomes for the Double-Blind, Randomized, Sham-Controlled Study of Targeted Lung Denervation in Patients with Moderate to Severe COPD: AIRFLOW-2
Arschang Valipour, Pallav Shah, Felix Herth, Christophe Pison, Christian Schumann, Ralf-Harto Hübner, Peter Bonta, Romain Kessler, Wolfgang Gesierich, Kaid Darwiche, Bernd Lamprecht, Thierry Pérez, Dirk Skowasch, Gaetan Deslee, Armelle Marceau, Frank Sciurba, Reinoud Gosens, Jorine Hartman, Francesca Conway, Marina Duller, Martin Mayse, Holly Norman, Dirk-Jan Slebos
International Journal of Chronic Obstructive Pulmonary Disease, 2020, Volume 15, pp.2807-2816. ⟨10.2147/COPD.S267409⟩
Article dans une revueTunable Functionalization of Nano-emulsions Using Amphiphilic Polymers
Asad Ur Rehman, Nicolas Anton, Sophie Bou, Jeremy Schild, Nadia Messaddeq, Thierry Vandamme, Salman Akram, Andrey Klymchenko, Mayeul Collot
Soft Matter, 2020, ⟨10.1039/D0SM01952F⟩
Article dans une revueHyperspectral evaluation of hepatic oxygenation in a model of total vs. arterial liver ischaemia
Eric Felli, Mahdi Al-Taher, Toby Collins, Andrea Baiocchini, Emanuele Felli, Manuel Barberio, Giuseppe Maria Ettorre, Didier Mutter, Veronique Lindner, Alexandre Hostettler, Sylvain Gioux, Catherine Schuster, Jacques Marescaux, Michele Diana
Scientific Reports, 2020, 10, pp.15441. ⟨10.1038/s41598-020-72915-6⟩
Article dans une revueAbstractLiver ischaemia reperfusion injury (IRI) is a dreaded pathophysiological complication which may lead to an impaired liver function. The level of oxygen hypoperfusion affects the level of cellular damage during the reperfusion phase. Consequently, intraoperative localisation and quantification of oxygen impairment would help in the early detection of liver ischaemia. To date, there is no real-time, non-invasive, and intraoperative tool which can compute an organ oxygenation map, quantify and discriminate different types of vascular occlusions intraoperatively. Hyperspectral imaging (HSI) is a non-invasive optical methodology which can quantify tissue oxygenation and which has recently been applied to the medical field. A hyperspectral camera detects the relative reflectance of a tissue in the range of 500 to 1000 nm, allowing the quantification of organic compounds such as oxygenated and deoxygenated haemoglobin at different depths. Here, we show the first comparative study of liver oxygenation by means of HSI quantification in a model of total vascular inflow occlusion (VIO) vs. hepatic artery occlusion (HAO), correlating optical properties with capillary lactate and histopathological evaluation. We found that liver HSI could discriminate between VIO and HAO. These results were confirmed via cross-validation of HSI which detected and quantified intestinal congestion in VIO. A significant correlation between the near-infrared spectra and capillary lactate was found (r = − 0.8645, p = 0.0003 VIO, r = − 0.7113, p = 0.0120 HAO). Finally, a statistically significant negative correlation was found between the histology score and the near-infrared parameter index (NIR) (r = − 0.88, p = 0.004). We infer that HSI, by predicting capillary lactates and the histopathological score, would be a suitable non-invasive tool for intraoperative liver perfusion assessment
SFPH proteins as therapeutic targets for a myriad of diseases
Dong Wang, Redouane Tabti, Sabria Elderwish, Amel Djehal, Nora Chouha, Franck Pinot, Peng Yu, Canan G Nebigil, Laurent Desaubry
Bioorganic and Medicinal Chemistry Letters, 2020, 30 (22), pp.127600. ⟨10.1016/j.bmcl.2020.127600⟩
Article dans une revueAbstractThe stomatin/prohibitin/flotillin/HflK/HflC (SPFH) domain is present in an evolutionarily conserved family of proteins that regulate a myriad of signaling pathways in archaea, bacteria and eukaryotes. The most studied SPFH proteins, prohibitins, have already been targeted by different families of small molecules to induce anticancer, cardioprotective, anti-inflammatory, antiviral, and antiosteoporotic activities. Ligands of other SPFH proteins have also been identified and shown to act as anesthetics, anti-allodynia, anticancer, and anti-inflammatory agents. These findings indicate that modulators of human or bacterial SPFH proteins can be developed to treat a wide variety of human disorders.
Virulence of beta-hemolytic streptococci in infective endocarditis
Yvon Ruch, Yves Hansmann, Philippe Riegel, Nicolas Lefebvre, Jean-Philippe Mazzucotelli, Nawal Douiri, Aurélie Martin, Xavier Argemi
Infection, 2020, 48 (1), pp.91-97. ⟨10.1007/s15010-019-01358-7⟩
Article dans une revueAbstractBACKGROUND: Streptococci involved in infective endocarditis (IE) primarily comprise alpha- or non-hemolytic streptococci (ANHS). Moreover, beta-hemolytic streptococci (BHS) can be involved, and guidelines recommend the addition of gentamicin for the first 2 weeks of treatment and the consideration of early surgery in such cases. This study compared the morbidity and mortality associated with IE depending on the microorganisms involved (BHS, ANHS, staphylococci, and enterococci). METHODS: We conducted a retrospective observational study between 2012 and 2017 in a single hospital in France. The endpoints were overall in-hospital mortality, 1-year mortality and the occurrence of complications. RESULTS: We analyzed 316 episodes of definite IE including 150 (38%), 96 (25%), 46 (12%), and 24 cases (6%) of staphylococcal, ANHS, enterococcal, and BHS IE, respectively. In-hospital mortality was significantly higher in the staphylococcal (n = 40; 26.7%) and BHS groups (n = 6; 25.0%) than in the ANHS (n = 9; 9.4%) and enterococcal groups (n = 5; 10.9%) (all p < 0.01). The rates of septic shock and cerebral emboli were also higher in the BHS group than in the ANHS group [n = 7 (29.2%) vs. n = 3 (3.1%), p < 0.001; n = 7 (29.2%) vs. n = 12 (12.5%); p = 0.05, respectively]. CONCLUSION: This study confirmed that BHS IE has a more severe prognosis than ANHS IE. The virulence of BHS may be similar to that of staphylococci, justifying increased monitoring of these patients and more 'aggressive' treatments such as early surgery.
Effect of dulaglutide on endothelial to mesenchymal transition of murine pancreatic intra-insular endothelial cells induced by cytokine stress at the initial phase of pancreatic islet transplantation
Bastien Misgault, Noura Sbat, Mohamad Kassem, Margaux Gracyasz, Hanine El Itawi, Kei Kurihara, Fatiha Zobairi, Florence Toti, Laurence Kessler
Transplant International, 2020, 33, pp.17-17
Article dans une revueTime-to-treatment initiation of colchicine and cardiovascular outcomes after myocardial infarction in the Colchicine Cardiovascular Outcomes Trial (COLCOT)
Nadia Bouabdallaoui, Jean-Claude Tardif, David D Waters, Fausto J Pinto, Aldo Pietro Maggioni, Rafael Diaz, Colin Berry, Wolfgang Koenig, José Lopez-Sendon, Habib Gamra, Ghassan Kiwan, Lucie Blondeau, Andreas Orfanos, Reda Ibrahim, Jean C. Grégoire, Marie-Pierre Dubé, Michelle Samuel, Olivier Morel, Pascal Lim, Olivier F. Bertrand, Simon Kouz, Marie-Claude Guertin, Philippe L'Allier, François Roubille
European Heart Journal, 2020, 41 (42), pp.4092-4099. ⟨10.1093/eurheartj/ehaa659⟩
Article dans une revueAbstractAims: The COLchicine Cardiovascular Outcomes Trial (COLCOT) demonstrated the benefits of targeting inflammation after myocardial infarction (MI). We aimed to determine whether time-to-treatment initiation (TTI) influences the beneficial impact of colchicine. Methods and results: In COLCOT, patients were randomly assigned to receive colchicine or placebo within 30 days post-MI. Time-to-treatment initiation was defined as the length of time between the index MI and the initiation of study medication. The primary efficacy endpoint was a composite of cardiovascular death, resuscitated cardiac arrest, MI, stroke, or urgent hospitalization for angina requiring coronary revascularization. The relationship between endpoints and various TTI (<3, 4–7 and >8 days) was examined using multivariable Cox regression models. Amongst the 4661 patients included in this analysis, there were 1193, 720, and 2748 patients, respectively, in the three TTI strata. After a median follow-up of 22.7 months, there was a significant reduction in the incidence of the primary endpoint for patients in whom colchicine was initiated < Day 3 compared with placebo [hazard ratios (HR) = 0.52, 95% confidence intervals (CI) 0.32–0.84], in contrast to patients in whom colchicine was initiated between Days 4 and 7 (HR = 0.96, 95% CI 0.53–1.75) or > Day 8 (HR = 0.82, 95% CI 0.61–1.11). The beneficial effects of early initiation of colchicine were also demonstrated for urgent hospitalization for angina requiring revascularization (HR = 0.35), all coronary revascularization (HR = 0.63), and the composite of cardiovascular death, resuscitated cardiac arrest, MI, or stroke (HR = 0.55, all P < 0.05). Conclusion: Patients benefit from early, in-hospital initiation of colchicine after MI. Trial Registration: COLCOT ClinicalTrials.gov number, NCT02551094.
Surgical-orthodontic treatment in patients with Ehlers–Danlos syndrome: a report of two familial cases
Hippolyte Chapuis, Arnaud Peyrolade, Ahmed Féki, François Clauss, Fabien Bornert
Journal of Oral Medicine and Oral Surgery, 2020, 26 (1), ⟨10.1051/mbcb/2019030⟩
Article dans une revueAbstractIntroduction: Ehlers–Danlos syndromes (EDS) are a group of rare inherited connective tissue disorders that affect the synthesis and structure of collagen in a ubiquitous manner. The clinical presentation can vary according to the associated genetic mutation. The 2017 international classification of EDS describes 13 types of EDS. Observation: The first part of this paper describes the surgical-orthodontic treatment for two sisters affected by a common and familial form of EDS, with a follow-up period of 8 years. The main symptoms were agenesis, impacted teeth, and delayed eruptions. Discussion: The second part proposes a review of oro-dental manifestations and discusses therapeutic approaches for patients with EDS. Conclusion: EDS can affect the oro-dental region with numerous consequences. Recognition of clinical symptoms and radiological signs is essential to provide appropriate dental care. Moreover, complete clinical and radiological assessment can allow early diagnosis of EDS.
A New Polycaprolactone-Based Biomembrane Functionalized with BMP-2 and Stem Cells Improves Maxillary Bone Regeneration
Céline Stutz, Marion Strub, François Clauss, Olivier Huck, Georg Schulz, Hervé Gegout, Nadia Benkirane-Jessel, Fabien Bornert, Sabine Kuchler-Bopp
Nanomaterials, 2020, 10 (9), ⟨10.3390/nano10091774⟩
Article dans une revueAbstractOral diseases have an impact on the general condition and quality of life of patients. After a dento-alveolar trauma, a tooth extraction, or, in the case of some genetic skeletal diseases, a maxillary bone defect, can be observed, leading to the impossibility of placing a dental implant for the restoration of masticatory function. Recently, bone neoformation was demonstrated after in vivo implantation of polycaprolactone (PCL) biomembranes functionalized with bone morphogenic protein 2 (BMP-2) and ibuprofen in a mouse maxillary bone lesion. In the present study, human bone marrow derived mesenchymal stem cells (hBM-MSCs) were added on BMP-2 functionalized PCL biomembranes and implanted in a maxillary bone lesion. Viability of hBM-MSCs on the biomembranes has been observed using the "LIVE/DEAD" viability test and scanning electron microscopy (SEM). Maxillary bone regeneration was observed for periods ranging from 90 to 150 days after implantation. Various imaging methods (histology, micro-CT) have demonstrated bone remodeling and filling of the lesion by neoformed bone tissue. The presence of mesenchymal stem cells and BMP-2 allows the acceleration of the bone remodeling process. These results are encouraging for the effectiveness and the clinical use of this new technology combining growth factors and mesenchymal stem cells derived from bone marrow in a bioresorbable membrane.
Validation and update of the thoracic surgery scoring system (Thoracoscore) risk model
Julien Die Loucou, Pierre-Benoit Pages, Pierre-Emmanuel Falcoz, Pascal-Alexandre Thomas, Caroline Rivera, Laurent Brouchet, Jean-Marc Baste, Marc Puyraveau, Alain Bernard, Marcel Dahan
European Journal of Cardio-Thoracic Surgery, 2020, 58 (2), pp.350-356. ⟨10.1093/ejcts/ezaa056⟩
Article dans une revueAbstractOBJECTIVES: The performance of prediction models tends to deteriorate over time. The purpose of this study was to update the Thoracoscore risk prediction model with recent data from the Epithor nationwide thoracic surgery database. METHODS: From January 2016 to December 2017, a total of 56279 patients were operated on for mediastinal, pleural, chest wall or lung disease. We used 3 recommended methods to update the Thoracoscore prediction model and then proceeded to develop a new risk model. Thirty-day hospital mortality included patients who died within the first 30days of the operation and those who died later during the same hospital stay. RESULTS: We compared the baseline patient characteristics in the original data used to develop the Thoracoscore prediction model and the validation data. The age distribution was different, with specifically more patients older than 65years in the validation group. Video-assisted thoracoscopy accounted for 47% of surgeries in the validation group compared but only 18% in the original data. The calibration curve used to update the Thoracoscore confirmed the overfitting of the 3 methods. The Hosmer-Lemeshow goodness-of-fit test was significant for the 3 updated models. Some coefficients were overfitted (American Society of Anesthesiologists score, performance status and procedure class) in the validation data. The new risk model has a correct calibration as indicated by the Hosmer-Lemeshow goodness-of-fit test, which was non-significant. The C-index was strong for the new risk model (0.84), confirming the ability of the new risk model to differentiate patients with and without the outcome. Internal validation shows no overfitting for the new model CONCLUSIONS: The new Thoracoscore risk model has improved performance and good calibration, making it appropriate for use in current clinical practice.
Prognostic Value of Troponin Elevation in COVID-19 Hospitalized Patients
Elena-Mihaela Cordeanu, Nicolas Duthil, François Severac, Hélène Lambach, Jonathan Tousch, Lucas Jambert, Corina Mirea, Alexandre Delatte, Waël Younes, Anne-Sophie Frantz, Hamid Merdji, Valérie Schini-Kerth, Pascal Bilbault, Patrick Ohlmann, Emmanuel Andres, Dominique Stephan
Journal of Clinical Medicine, 2020, 9 (12), ⟨10.3390/jcm9124078⟩
Article dans une revueAbstract(1) Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) penetrates the respiratory epithelium through angiotensin-converting enzyme-2 (ACE2) binding. Myocardial and endothelial expression of ACE2 could account for the growing body of reported evidence of myocardial injury in severe forms of Human Coronavirus Disease 2019 (COVID-19). We aimed to provide insight into the impact of troponin (hsTnI) elevation on SARS-CoV-2 outcomes in patients hospitalized for COVID-19. (2) Methods: This was a retrospective analysis of hospitalized adult patients with the SARS-CoV-2 infection admitted to a university hospital in France. The observation period ended at hospital discharge. (3) Results: During the study period, 772 adult, symptomatic COVID-19 patients were hospitalized for more than 24 h in our institution, of whom 375 had a hsTnI measurement and were included in this analysis. The median age was 66 (55-74) years, and there were 67% of men. Overall, 205 (55%) patients were placed under mechanical ventilation and 90 (24%) died. A rise in hsTnI was noted in 34% of the cohort, whereas only three patients had acute coronary syndrome (ACS) and one case of myocarditis. Death occurred more frequently in patients with hsTnI elevation (HR 3.95, 95% CI 2.69-5.71). In the multivariate regression model, a rise in hsTnI was independently associated with mortality (OR 3.12, 95% CI 1.49-6.65) as well as age >= 65 years old (OR 3.17, 95% CI 1.45-7.18) and CRP >= 100 mg/L (OR 3.62, 95% CI 1.12-13.98). After performing a sensitivity analysis for the missing values of hsTnI, troponin elevation remained independently and significantly associated with death (OR 3.84, 95% CI 1.78-8.28). (4) Conclusion: Our study showed a four-fold increased risk of death in the case of a rise in hsTnI, underlining the prognostic value of troponin assessment in the COVID-19 context.
ADVERSE EVENTS OF THE ARGUS II RETINAL PROSTHESIS: Incidence, Causes, and Best Practices for Managing and Preventing Conjunctival Erosion
S. Rizzo, P. O. Barale, S. Ayello-Scheer, R. G. Devenyi, Marie-Noelle Delyfer, Jean-François Korobelnik, A. Rachitskaya, A. Yuan, K. T. Jayasundera, D. N. Zacks, J. T. Handa, S. R. Montezuma, D. Koozekanani, P. E. Stanga, L. da Cruz, P. Walter, A. J. Augustin, M. Chizzolini, L. C. Olmos de Koo, A. C. Ho, B. Kirchhof, P. Hahn, L. Vajzovic, Jr., R. Iezzi, D. Gaucher, J. F. Arevalo, N. Z. Gregori, S. Grisanti, E. Ozmert, Y. H. Yoon, G. T. Kokame, J. I. Lim, P. Szurman, Jr., E. de Juan, F. A. Rezende, J. Salzmann, G. Richard, S. S. Huang, F. Merlini, U. Patel, C. Cruz, R. J. Greenberg, S. Justus, L. Cinelli, M. S. Humayun
RETINA. The Journal of Retinal and Vitreous Diseases, 2020, 40 (2), pp.303-311. ⟨10.1097/iae.0000000000002394⟩
Article dans une revueAbstractPurpose: To analyze and provide an overview of the incidence, management, and prevention of conjunctival erosion in Argus II clinical trial subjects and postapproval patients. Methods: This retrospective analysis followed the results of 274 patients treated with the Argus II Retinal Prosthesis System between June 2007 and November 2017, including 30 subjects from the US and European clinical trials, and 244 patients in the postapproval phase. Results were gathered for incidence of a serious adverse event, incidence of conjunctival erosion, occurrence sites, rates of erosion, and erosion timing. Results: Overall, 60% of subjects in the clinical trial subjects versus 83% of patients in the postapproval phase did not experience device- or surgery-related serious adverse events. In the postapproval phase, conjunctival erosion had an incidence rate of 6.2% over 5 years and 11 months. In 55% of conjunctival erosion cases, erosion occurred in the inferotemporal quadrant, 25% in the superotemporal quadrant, and 20% in both. Sixty percent of the erosion events occurred in the first 15 months after implantation, and 85% within the first 2.5 years. Conclusion: Reducing occurrence of conjunctival erosion in patients with the Argus II Retinal Prosthesis requires identification and minimization of risk factors before and during implantation. Implementing inverted sutures at the implant tabs, use of graft material at these locations as well as Mersilene rather than nylon sutures, and accurate Tenon's and conjunctiva closure are recommended for consideration in all patients.
Invited commentary to "Multiple Pulmonary Resections for Synchronous and Metachronous Lung Cancer at Two Chinese Centers
Pierre-Emmanuel Falcoz
Annals of Thoracic Surgery, 2020, 109 (3), pp.864-864. ⟨10.1016/j.athoracsur.2019.11.032⟩
Article dans une revueImpact of Opioid Analgesia and Inhalation Sedation Kalinox on Pain and Radial Artery Spasm during Transradial Coronary Angiography
Caroline Birgy, Antonin Trimaille, Nathan Messas, Jessica Ristorto, Anas Kayali, Benjamin Marchandot, Thomas Cardi, Sébastien Hess, Marion Kibler, Laurence Jesel, Patrick Ohlmann, Olivier Morel
Journal of Clinical Medicine, 2020, 9 (9), pp.2747. ⟨10.3390/jcm9092747⟩
Article dans une revueAbstractWith respect to the transfemoral approach, transradial procedures enable a drastic reduction of bleeding events and are associated with a reduction of mortality. Radial artery spasm (RAS) is one of the most common complications and may lead to patient discomfort and procedural failure. Currently, there is no consensus on the optimal sedation protocol to avoid RAS. The aim of this study was to investigate the respective impact of opioids analgesia and inhalation sedation with a 50% nitrous oxide/oxygen premix (Kalinox) on pain and occurrence of RAS during transradial coronary procedures. Consecutive patients undergoing transradial coronary angiography were prospectively enrolled in one, single center observational study (Nouvel Hôpital Civil, Strasbourg, France). Patients received opioids analgesia or inhalation sedation with Kalinox. The primary endpoints of the study were the incidence of a pain scale ≥5/10 and the occurrence of RAS. The secondary endpoints were the incidence of side effects. A total of 325 patients were enrolled (185 in the opioids analgesia group, 140 in the Kalinox group). RAS and pain scale ≥5 rates were not significantly different in the opioids analgesia and Kalinox groups (respectively 13.5% vs. 10.0% and 16.2% vs. 11.4%). Headache was more frequently observed in the Kalinox group (6.4% vs. 0.0%; p = 0.002). By multivariate analysis, female gender, BMI <25 kg/m2, puncture difficulty, the use of plastic needle and 6F sheath were identified as independent predictors of RAS. Procedural inhalation sedation by Kalinox is as safe as opioids analgesia during transradial coronary angiography.
Outcomes of COVID-19 Hospitalized Patients Previously Treated with Renin-Angiotensin System Inhibitors
Eléna-Mihaela Cordeanu, Lucas Jambert, François Séverac, Hélène Lambach, Jonathan Tousch, Marie Heitz, Corina Mirea, Amer Hamade, Waël Younes, Anne-Sophie Frantz, Hamid Merdji, Valérie Schini-Kerth, Pascal Bilbault, Ferhat Meziani, Patrick Ohlmann, Emmanuel Andres, Dominique Stephan
Journal of Clinical Medicine, 2020, 9 (11), ⟨10.3390/jcm9113472⟩
Article dans une revueAbstractBackground: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) penetrates respiratory epithelium through angiotensin-converting enzyme-2 binding, raising concerns about the potentially harmful effects of renin-angiotensin system inhibitors (RASi) on Human Coronavirus Disease 2019 (COVID-19) evolution. This study aimed to provide insight into the impact of RASi on SARS-CoV-2 outcomes in patients hospitalized for COVID-19. Methods: This was a retrospective analysis of hospitalized adult patients with SARS-CoV-2 infection admitted to a university hospital in France. The observation period ended at hospital discharge. Results: During the study period, 943 COVID-19 patients were admitted to our institution, of whom 772 were included in this analysis. Among them, 431 (55.8%) had previously known hypertension. The median age was 68 (56-79) years. Overall, 220 (28.5%) patients were placed under mechanical ventilation and 173 (22.4%) died. According to previous exposure to RASi, we defined two groups, namely, "RASi" (n = 282) and "RASi-free" (n = 490). Severe pneumonia (defined as leading to death and/or requiring intubation, high-flow nasal oxygen, noninvasive ventilation, and/or oxygen flow at a rate of >= 5 L/min) and death occurred more frequently in RASi-treated patients (64% versus 53% and 29% versus 19%, respectively). However, in a propensity score-matched cohort derived from the overall population, neither death (hazard ratio (HR) 0.93 (95% confidence interval (CI) 0.57-1.50), p = 0.76) nor severe pneumonia (HR 1.03 (95%CI 0.73-1.44), p = 0.85) were associated with RASi therapy. Conclusion: Our study showed no correlation between previous RASi treatment and death or severe COVID-19 pneumonia after adjustment for confounders.
Prevalence of sensitive teeth and associated factors: a multicentre, cross-sectional questionnaire survey in France
Alessandra Blaizot, Damien Offner, Gilda Trohel, Valérie Bertaud, Christophe Bou, Céline Catteau, Camille Inquimbert, Laurence Lupi-Pegurier, Anne-Marie Musset, Paul Tramini, Jean-Noel Vergnes
BMC Oral Health, 2020, 20 (1), pp.234. ⟨10.1186/s12903-020-01216-1⟩
Article dans une revueAbstractAbstract Background As far as we know, little data, whether obtained from self-administered questionnaires or upon dental clinical examination, has been published on the prevalence of sensitive teeth (ST) in the French adult population. The objectives of the present work were to estimate ST prevalence and characteristics in the general population of France and to explore the associated factors. Method A multicentre cross-sectional study was conducted between November 2011 and March 2013 in six French cities. Adult passers-by in public places were invited to answer an electronic questionnaire on a tablet computer. Only people who declared having at least one natural tooth were included in the study. A logistic regression model was used for the multivariate analysis. Results The prevalence of ST during the previous 12 months reported by the sample of 2413 participants was 42.2% [95% CI: 40.2–44.1%]. The final logistic regression model showed significant statistical associations between ST and female gender, use of tobacco, consumption of soft drinks, limited access to oral care and poor oral hygiene habits ( p < 0.05). Conclusions This study provides prevalence data on ST in a general population in France, which seems to remain high despite the existence of many therapies. It should alert professionals to a clinical manifestation that is becoming increasingly prevalent and that they will have to take into consideration to help reduce the discomfort arising from it.
Porphyromonas gingivalis, a Long-Range Pathogen: Systemic Impact and Therapeutic Implications
Hannah Mulhall, Olivier Huck, Salomon Amar
Microorganisms, 2020, 8 (6), pp.869. ⟨10.3390/microorganisms8060869⟩
Article dans une revueAbstractPeriodontitis is an inflammatory disease associated with a dysbiosis of the oral flora characterized by a chronic sustained inflammation leading to destruction of tooth-supporting tissues. Over the last decade, an association between periodontitis and systemic disorders such as cardiovascular diseases, rheumatoid arthritis and obesity has been demonstrated. The role of periodontal pathogens, notably Porphyromonas gingivalis (P. gingivalis), in the onset or exacerbation of systemic diseases has been proposed. P. gingivalis expresses several virulence factors that promote its survival, spreading, and sustaining systemic inflammation. Recently, the impact of periodontitis on gut dysbiosis has also been suggested as a potential mechanism underlying the systemic influence of periodontitis. New therapeutic strategies for periodontitis and other dysbiotic conditions, including the use of beneficial microbes to restore healthy microbial flora, may pave the way to improved therapeutic outcomes and more thorough patient management.
Are the Immune Properties of Mesenchymal Stem Cells from Wharton’s Jelly Maintained during Chondrogenic Differentiation?
Charlotte Voisin, Ghislaine Cauchois, Loïc Reppel, Caroline Laroye, Laetitia Louarn, Chantal Schenowitz, Paulin Sonon, Isabelle Poras, Valentine Wang, Edgardo D. Carosella, Nadia Benkirane-Jessel, Philippe Moreau, Nathalie Rouas-Freiss, Danièle Bensoussan, Céline Huselstein
Journal of Clinical Medicine, 2020, 9 (2), pp.423. ⟨10.3390/jcm9020423⟩
Article dans une revueAbstractBackground: Umbilical mesenchymal stem/stromal cells (MSCs), and especially those derived from Wharton’s jelly (WJ), are a promising engineering tool for tissue repair in an allogeneic context. This is due to their differentiation capacity and immunological properties, like their immunomodulatory potential and paracrine activity. Hence, these cells may be considered an Advanced Therapy Medicinal Product (ATMP). The purpose of this work was to differentiate MSCs from WJ (WJ-MSCs) into chondrocytes using a scaffold and to evaluate, in vitro, the immunomodulatory capacities of WJ-MSCs in an allogeneic and inflammatory context, mimicked by IFN-γ and TNF-α priming during the chondrogenic differentiation. Methods: Scaffolds were made from hydrogel composed by alginate enriched in hyaluronic acid (Alg/HA). Chondrogenic differentiation, immunological function, phenotype expression, but also secreted soluble factors were the different parameters followed during 28 days of culture. Results: During chondrocyte differentiation, even in an allogeneic context, WJ-MSCs remained unable to establish the immunological synapse or to induce T cell alloproliferation. Moreover, interestingly, paracrine activity and functional immunomodulation were maintained during cell differentiation. Conclusion: These results show that WJ-MSCs remained hypoimmunogenic and retained immunomodulatory properties even when they had undergone chondrocyte differentiation.
Studying autoimmune diseases with thymic epithelial tumors (TET): Real-world insight from RYTHMIC
Jc Benitez, Me Boucher, E Dansin, M Kerjouan, I Bigay-Game, E Pichon, F Thillays, Pierre-Emmanuel Falcoz, S Lyubimova, Y Oulkhouir, F Calcagno, L Thiberville, C Clement-Duchene, F Morin, P Missy, P Thomas, J Maury, T Molina, N Girard, B Besse
Annals of Oncology, 2020, 31 (Supplément 7), ⟨10.1016/j.annonc.2020.10.540⟩
Article dans une revueDeficiency of the SMOC2 matricellular protein impairs bone healing and produces age-dependent bone loss
Supawich Morkmued, François Clauss, Brigitte Schuhbaur, Valerie Fraulob, Eric Mathieu, Joseph Hemmerlé, Hans Clevers, Bon-Kyoung Koo, Pascal Dollé, Agnès Bloch-Zupan, Karen Niederreither
Scientific Reports, 2020, 10, pp.14817. ⟨10.1038/s41598-020-71749-6⟩
Article dans une revueAbstractSecreted extracellular matrix components which regulate craniofacial development could be reactivated and play roles in adult wound healing. We report a patient with a loss-of-function of the secreted matricellular protein SMOC2 (SPARC related modular calcium binding 2) presenting severe oligodontia, microdontia, tooth root deficiencies, alveolar bone hypoplasia, and a range of skeletal malformations. Turning to a mouse model, Smoc2-GFP reporter expression indicates SMOC2 dynamically marks a range of dental and bone progenitors. While germline Smoc2 homozygous mutants are viable, tooth number anomalies, reduced tooth size, altered enamel prism patterning, and spontaneous age-induced periodontal bone and root loss are observed in this mouse model. Whole-genome RNA-sequencing analysis of embryonic day (E) 14.5 cap stage molars revealed reductions in early expressed enamel matrix components (Odontogenic ameloblast-associated protein) and dentin dysplasia targets (Dentin matrix acidic phosphoprotein 1). We tested if like other matricellular proteins SMOC2 was required for regenerative repair. We found that the Smoc2-GFP reporter was reactivated in adjacent periodontal tissues 4 days after tooth avulsion injury. Following maxillary tooth injury, Smoc2(-/-) mutants had increased osteoclast activity and bone resorption surrounding the extracted molar. Interestingly, a 10-day treatment with the cyclooxygenase 2 (COX2) inhibitor ibuprofen (30 mg/kg body weight) blocked tooth injury-induced bone loss in Smoc2(-/-) mutants, reducing matrix metalloprotease (Mmp)9. Collectively, our results indicate that endogenous SMOC2 blocks injury-induced jaw bone osteonecrosis and offsets age-induced periodontal decay.
Efficacy, tolerability, and safety of an innovative medical device for improving oral accessibility during oral examination in special-needs patients: A multicentric clinical trial
Mathieu Mogenot, Laurence Hein-Halbgewachs, Christophe Goetz, Nadia Ouamara, Dominique Droz-Desprez, Catherine Strazielle, Sylvie Albecker, Brigitte Mengus, Marion Strub, Marie-Cécile Maniere, Pascal Richardin, Stéphane Wang, Giuseppa Piga, Amélie Dalstein, Daniel Anastasio
PLoS ONE, 2020, 15 (9), pp.e0239898. ⟨10.1371/journal.pone.0239898⟩
Article dans une revueAbstractBackground People with special needs have high unmet oral healthcare needs, partly because dentists find it difficult to access their oral cavity. The Oral Accessibility Spatula aims to improve oral accessibility. This prospective multicenter interventional open-label non-randomized patient-self-controlled trial assessed the ability of the spatula to improve the oral accessibility of special-needs patients during dental examinations. Methods: The cohort was a convenience sample of minor and adult patients with special needs due to physical, intellectual, and/or behavioral disorders who underwent dental check-up/treatment in five French tertiary hospitals/private clinics in 2016–2018 and evinced some (Venham-Score = 2–4) but not complete (Venham-Score = 5) resistance to oral examination. After inclusion, patients underwent oral examination without the spatula and then immediately thereafter oral examination with the spatula. Primary outcome was Oral Accessibility Score (0–12 points; higher scores indicate visualization and probing of the tooth sectors). Secondary outcomes were patient toleration (change in Venham-Score relative to first examination), safety, and Examiner Satisfaction Score (0–10; low scores indicate unsatisfactory examination). Results: The 201 patients were mostly non-elderly adults (18–64 years, 65%) but also included children (21%), adolescents (11%), and aged patients (3%). One-quarter, half, and one-quarter had Venham-Score = 2, 3, and 4 at inclusion, respectively. The spatula significantly improved Oral Accessibility Score (4.8 to 10.8), Venham-Score (3.1 to 2.6), and Examiner Satisfaction Score (3.4 to 7.2) (all p<0.001). There were no severe spatula-related adverse events. Conclusion: The spatula significantly improved oral access, was safe and well-tolerated by the patients, and markedly improved oral examination quality.
A Novel Technique to Improve Anastomotic Perfusion Prior to Esophageal Surgery: Hybrid Ischemic Preconditioning of the Stomach. Preclinical Efficacy Proof in a Porcine Survival Model
Manuel Barberio, Éric Felli, Raoul Pop, Margherita Pizzicannella, Bernard Geny, Veronique Lindner, Andrea Baiocchini, Boris Jansen-Winkeln, Yusef Moulla, Vincent Agnus, Jacques Marescaux, Ines Gockel, Michele Diana
Cancers, 2020, 12 (10), ⟨10.3390/cancers12102977⟩
Article dans une revueAbstractSimple Summary Esophagectomy has a high rate of anastomotic complications thought to be caused by poor perfusion of the gastric graft, which is used to restore the continuity of the gastrointestinal tract. Ischemic gastric preconditioning (IGP), performed by partially destroying preoperatively the gastric vessels either by means of interventional radiology or surgically, might improve the gastric conduit perfusion. Both approaches have downsides. The timing, extent and mechanism of IGP remain unclear. A novel hybrid IGP method combining the advantages of the endovascular and surgical approach was introduced in this study. IGP improves unequivocally the mucosal and serosal blood-flow at the gastric conduit fundus by triggering new vessels formation. The proposed timing and extent of IGP were efficacious and might be easily applied to humans. This novel minimally invasive IGP technique might reduce the anastomotic leak rate of patients undergoing esophagectomy, thus improving their overall oncological outcome. Esophagectomy often presents anastomotic leaks (AL), due to tenuous perfusion of gastric conduit fundus (GCF). Hybrid (endovascular/surgical) ischemic gastric preconditioning (IGP), might improve GCF perfusion. Sixteen pigs undergoing IGP were randomized: (1) Max-IGP (n = 6): embolization of left gastric artery (LGA), right gastric artery (RGA), left gastroepiploic artery (LGEA), and laparoscopic division (LapD) of short gastric arteries (SGA); (2) Min-IGP (n = 5): LGA-embolization, SGA-LapD; (3) Sham (n = 5): angiography, laparoscopy. At day 21 gastric tubulation occurred and GCF perfusion was assessed as: (A) Serosal-tissue-oxygenation (StO(2)) by hyperspectral-imaging; (B) Serosal time-to-peak (TTP) by fluorescence-imaging; (C) Mucosal functional-capillary-density-area (FCD-A) index by confocal-laser-endomicroscopy. Local capillary lactates (LCL) were sampled. Neovascularization was assessed (histology/immunohistochemistry). Sham presented lower StO(2) and FCD-A index (41 +/- 10.6%; 0.03 +/- 0.03 respectively) than min-IGP (66.2 +/- 10.2%, p-value = 0.004; 0.22 +/- 0.02, p-value < 0.0001 respectively) and max-IGP (63.8 +/- 9.4%, p-value = 0.006; 0.2 +/- 0.02, p-value < 0.0001 respectively). Sham had higher LCL (9.6 +/- 4.8 mL/mol) than min-IGP (4 +/- 3.1, p-value = 0.04) and max-IGP (3.4 +/- 1.5, p-value = 0.02). For StO(2), FCD-A, LCL, max- and min-IGP did not differ. Sham had higher TTP (24.4 +/- 4.9 s) than max-IGP (10 +/- 1.5 s, p-value = 0.0008) and min-IGP (14 +/- 1.7 s, non-significant). Max- and min-IGP did not differ. Neovascularization was confirmed in both IGP groups. Hybrid IGP improves GCF perfusion, potentially reducing post-esophagectomy AL.
The organisation of a French emergency department in a coronavirus hotspot
Mathieu Oberlin, Pierrick Le Borgne, Martin Behr, Sabrina Kepka, Pascal Bilbault
Anaesthesia Critical Care & Pain Medicine, 2020, 39 (4), pp.457-458. ⟨10.1016/j.accpm.2020.06.001⟩
Article dans une revueAbstractNo abstract available
Epithelial-mesenchymal transition and membrane microparticles: potential implications for bronchiolitis obliterans syndrome after lung transplantation
Benjamin Renaud-Picard, Kevin Vallière, Justine Toussaint, Guillaume Kreutter, Ali El-Habhab, Mohamad Kassem, Fatiha El-Ghazouani, Anne Olland, Sandrine Hirschi, Michele Porzio, Marie-Pierrette Chenard, Florence Toti, Laurence Kessler, Romain Kessler
Transplant Immunology, 2020, 59, pp.101273. ⟨10.1016/j.trim.2020.101273⟩
Article dans une revueAbstractLong term survival post lung transplantation (LTx) is limited by the occurrence of bronchiolitis obliterans syndrome (BOS). One mechanism involved is the epithelial-mesenchymal transition (EMT). Membrane microparticles (MPs) are known to be involved in some respiratory diseases and in other organs allograft rejection episodes. We hypothesized that leukocyte-derived MPs likely contribute to EMT. To emphasize this physiological concept, our objectives were to: (1) confirm the presence of EMT on explanted lungs from patients who underwent a second LTx for BOS; 2) characterize circulating MPs in transplanted patients, with or without BOS; (3) evaluate in vitro the effect of monocyte-derived MPs in EMT of human bronchial epithelial cells. Our IHC analysis on explanted graft lungs revealed significant pathological signs of EMT with an inhomogeneous destruction of the bronchial epithelium, with decreased expression of the epithelial protein E-cadherin and increased expression of the mesenchymal protein Vimentin. The immunophenotyping of MPs demonstrated that the concentration of MPs carrying E-cadherin was lower in patients affected by BOS (p = .007). In vitro, monocyte-derived MPs produced with LPS were associated with decreased E-cadherin expression (p < .05) along with significant morphological and functional cell modifications. MPs may play a role in EMT onset in bronchial epithelium following LTx.
Recent Advances in the Synthesis of C2‐Functionalized Pyridines and Quinolines Using N ‐Oxide Chemistry
Dong Wang, Laurent Désaubry, Gaoyu Li, Mindong Huang, Shixin Zheng
Advanced Synthesis and Catalysis, In press, ⟨10.1002/adsc.202000910⟩
Article dans une revueSurface characterization and bonding properties of milled polyetheretherketone dental posts
Merve Benli, Beril Eker Gümüş, Yusuf Kahraman, Olivier Huck, Mutlu Özcan
Odontology, 2020, 108 (4), pp.596-606. ⟨10.1007/s10266-020-00484-1⟩
Article dans une revueAbstractPEEK has been used in many dental applications except intra-radicular post. The aim of this study is to test polyetheretherketone (PEEK) as a dental post material through tensile bond strength (TBS) and surface roughness (SR), and to compare it with glass-fiber and cast-metal posts. Thus, 60 human maxillary central incisors with a single root were endodontically treated and divided into three groups (n = 20) according to the type of post (Group P: PEEK, Group F: Glass-fiber, Group M: Cast-metal). Appropriate surface treatment was employed for each group and SR was determined by a three-dimensional non-contact profilometer before cementation. All posts were luted to the canal dentin using self-etch resin cement (Panavia F2.0). Pull-out test was performed on a universal testing machine at a speed of 0.5 mm/min crosshead speed until failure, and TBS were calculated. One-way ANOVA, Tukey's HSD, and Pearson chi-squared tests were performed for statistical analyses (alpha = 0.05). According to the results, group F demonstrated the highest SR (2.93 +/- 0.18 mu m) and lowest TBS values (10.05 +/- 0.53 MPa), while group P exhibited lowest SR (1.37 +/- 0.11 mu m) and highest TBS values (14.33 +/- 0.58 MPa) (p < 0.001). No significant differences in failure modes were identified among groups, mostly adhesive (p = 0.243). As conclusion, PEEK may be a reliable and contemporary option for dental post systems when used with appropriate surface treatment and luting agent. This high-performance polymer may be a novel candidate as a contemporary dental post system due to its superior mechanical, chemical, thermal, and esthetical properties with low risk of fracture.
Surface roughness and wear behavior of occlusal splint materials made of contemporary and high-performance polymers
Merve Benli, Berli Eker Gümüş, Yusuf Kahraman, Bilge Gökçen-Rohlig, Gülümser Evlioğlu, Olivier Huck, Mutlu Özcan
Odontology, 2020, 108 (2), pp.240-250. ⟨10.1007/s10266-019-00463-1⟩
Article dans une revueAbstractWith the development of a digital technology of computer-assisted manufacturing (CAD/CAM) and new age materials, the use of new types of occlusal splint is to consider. The aim of the present study was to evaluate the surface roughness (Ra) and wear behavior of different CAD/CAM materials against enamel antagonist through a simulated chewing test. A total of 75 specimens made from ethylene vinyl acetate (EVA), polymethyl methacrylate (PMMA), polycarbonate (PC), polyetheretherketone (PEEK), and polyethyleneterephthalate (PETG) as a control were polished to evaluate the Ra before loading by optical profilometry and further analyzed by scanning electron microscopy (SEM). Specimens of each group were subjected to thermomechanical fatigue loading in a chewing simulator (60000 cycles at 49 N with 5-55 degrees C thermocycling). The wear volume loss and change in Ra of each specimen after the simulated chewing were analyzed. One-way ANOVA, paired samples t test, and Pearson correlation analysis were performed for statistical analyzes. The result showed that the volume loss and Ra varied among the materials tested. EVA exhibited the greatest amount of Ra and volume loss (p < 0.001), while PEEK had the lowest values for both (p < 0.001). In terms of volume loss, there was no significant difference between PC and PMMA (p > 0.05). SEM investigations revealed different wear behaviors, especially in EVA. As PEEK showed significantly more favorable results, PEEK splints should be considered as a new therapeutic option for occlusal splint.
Protocol of the SPARTE Study: A Strategy for Preventing Cardiovascular and Renal Events based on ARTErial Stiffness
Stephane Laurent, Gilles Chatellier, Michel Azizi, David Calvet, Gabriel Choukroun, Nicolas Danchin, Pascal Delsart, Philippe Gosse, Gerard London, Jean-Jacques Mourad, Bruno Pannier, Helena Pereira, Dominique Stephan, Pierre Boutouyrie
ARTERY RESEARCH, 2020, 26 (4), pp.250-260. ⟨10.2991/artres.k.200711.001⟩
Article dans une revueAbstractWhether arterial stiffness is a surrogate end-point for cardiovascular and renal disease has never been directly demonstrated by a controlled clinical trial. Our main hypothesis is a better prevention of outcomes in high risk hypertensives with PWV normalization driven strategy than with usual blood pressure driven therapeutic strategy based on European Society of Hypertension-European Society of Cardiology (ESH-ESC) guidelines. The strategy for preventing cardiovascular and renal events based on arterial stiffness study is a multicenter open-label randomized controlled trial with blinded endpoint evaluation comparing a therapeutic strategy targeting the normalisation of Pulse Wave Velocity (PWV group) versus a classical therapeutic strategy only implementing the ESH-ESC Guidelines (conventional group), for reducing cardiovascular and renal events. Patients with primary hypertension, aged 55-75 years, and at medium-to-very high cardiovascular risk will be included and followed-up for 4 years. In the PWV group, treatment will be adjusted to carotid-femoral PWV measured every 6 months. In the conventional group, PWV will be measured at baseline and every 2 years, but its value will be blinded to the investigator in charge of the patient. In the PWV group, the therapeutic strategy will preferably use a combination of Angiotensin-converting Enzyme Inhibitor (ACEI) [or Angiotensin Receptor Blockers (ARB)] and calcium channel blockers, as well as maximal recommended doses of ACEIs and ARBs. The primary combined endpoint includes stroke and coronary events (myocardial infarction, angioplasty, bypass), fatal or not, peripheral artery disease (angioplasty, bypass, amputation), hospitalization for heart failure, aortic dissection, chronic kidney disease (doubling of creatinine, dialysis), and sudden death. Twenty-five research centers will include a total of 1500 patients, in order to show a 20% reduction in the primary combined endpoint - the incidence of which is estimated at 10% per year - in the PWV group compared to the conventional group. (C) 2020 Association for Research into Arterial Structure and Physiology. Publishing services by Atlantis Press International B.V.
Brief report : High MET overexpression does not predict the presence of MET exon 14 splice mutations in NSCLC : results from the IFCT Predict.amm study
Simon Baldacci, Martin Figeac, Martine Antoine, Clotilde Descarpentries, Zoulika Kherrouche, Philippe Jamme, Marie-Christine Copin, David Tulasne, Isabelle Nanni, Michèle Beau-Faller, Samia Melaabi, Guenaelle Levallet, Elisabeth Quoix, Denis Moro-Sibilot, Sylvie Friard, Pascale Missy, Fabrice Barlesi, Jacques Cadranel, Alexis Cortot
Journal of Thoracic Oncology, 2020, 15 (1), pp.120-124. ⟨10.1016/j.jtho.2019.09.196⟩
Article dans une revueAbstractIntroductionMET proto-oncogene (MET) exon 14 splice site (METex14) mutations were recently described in NSCLC and has been reported to correlate with efficacy of MET tyrosine kinase inhibitors. High diversity of these alterations makes them hard to detect by DNA sequencing in clinical practice. Because METex14 mutations induce increased stabilization of the MET receptor, it is anticipated that these mutations are associated with MET overexpression. We aim to determine whether NSCLC with high MET overexpression could define a subset of patients with a high rate of METex14 mutations.MethodsFrom The French Cooperative Thoracic Intergroup PREDICT.amm cohort of 843 consecutive patients with a treatment-naive advanced NSCLC who were eligible for a first-line therapy, 108 NSCLC samples with high MET overexpression defined by an immunochemistry score 3+ were tested for METex14 mutations using fragment length analysis combined with optimized targeted next-generation sequencing. MET copy number analysis was also derived from the sequencing data.ResultsMETex14 mutations were detected in two patients (2.2%) who also displayed a TP53 mutation and a PIK3CA mutation, respectively. An MET gene copy number increase was observed in seven additional patients (7.7%). Next-generation sequencing analysis revealed inactivating mutations in TP53 (52.7%) and PTEN (1.1%), and oncogenic mutations in KRAS (28.6%), EGFR (7.7%), PIK3CA (4.4%), BRAF (4.4%), NRAS (2.2%), GNAS (1.1%), and IDH1 (1.1%).ConclusionsThe rate of METex14 mutations in NSCLC with high MET overexpression was similar to that found in unselected NSCLC. Moreover, we observed a high frequency of driver alterations in other oncogenes. Consequently these findings do not support the use of MET immunohistochemistry as a surrogate marker for METex14 mutations.
Remote computer-assisted analysis of ICG fluorescence signal for evaluation of small intestinal anastomotic perfusion: a blinded, randomized, experimental trial
Kristina Gosvig, Signe Steenstrup Jensen, Niels Qvist, Vincent Agnu, Troels Steenstrup Jensen, Veronique Lindner, Jacques Marescaux, Michele Diana, Mark Bremholm Ellebaek
Surgical Endoscopy, 2020, 34 (5), pp.2095-2102. ⟨10.1007/s00464-019-06990-w⟩
Article dans une revueAbstractBackground Indocyanine green fluorescence imaging (ICG-FI) may be used to visualize intestinal perfusion prior to anastomosis. Methods for quantification of the fluorescence signal are required to ensure an objective evaluation. The aim of this study was to evaluate a method for quantification of relative perfusion and to investigate the correlation between the perfusion level and the anastomotic strength. Method This blinded, randomized, experimental trial included twenty pigs. Each pig received three small intestinal anastomoses with 30%, 60%, or 100% perfusion, respectively. The perfusion levels were determined relative to healthy intestine using ICG-FI. Ischemia was induced by mesenteric ligation and the perfusion level of each anastomosis was determined using a software-based analysis of the fluorescence signal. On postoperative day 5, the anastomoses were subjected to tensile strength test and histopathological assessment. Results No anastomotic leakage occurred. The tensile strength of the 30% perfusion group was 9.09 N, which was significantly lower than the 60% perfusion group (11.5 N) and the 100% perfusion group (12.9 N). The difference between the 60% perfusion group and the 100% perfusion group was not significant. The histopathological assessment showed no significant differences between perfusion groups. Conclusions A reduction in blood supply to 30%, as determined by ICG-FI, in small intestinal anastomoses was necessary to demonstrate a decrease in tensile strength.
Driving Skills Tested on Simulator After Strabismus Surgery: A Prospective Study
Dan Derhy, Ségolène Lithfous, Claude Speeg, David Gaucher, Olivier Després, André Dufour Debiane, Tristan Bourcier, Arnaud Sauer
Translational vision science & technology, 2020, 9 (8), pp.36. ⟨10.1167/tvst.9.8.36⟩
Article dans une revueAbstractPurpose: The sense of vision is responsible for 90% of the information obtained by the motorist. Improvement in binocular visual acuity (VA) and visual field (VF) achieved after strabismus surgery could have beneficial effects on driving. Our study sought to identify functional improvements (VA and VF) and improvements in driving ability following strabismus surgery. Methods: In a prospective cohort study, the following parameters are analyzed before and 3 months after strabismus surgery: simulated driving performance (including eye movements and actions on vehicle control), binocular VA, binocular VF, and self-confidence during driving. Results: Twenty patients participated in the study. The mean preoperative logMAR binocular VA and stereopsis do not significantly differ from the postoperative. The mean Esterman VF score increases from 91.3 (±17.2) preoperatively to 96.9 (±13.9) postoperatively (P = 0.045). The mean self-confidence directed at driving scores decreases from 20.5 (±10.3) points before surgery to 11.0 (±6.0) points after surgery (P < 0.001). The distance at which the road signs are identified is significantly higher after surgery. The average speed of the vehicle and the speed near the targets (30 m) increase significantly after strabismus surgery. A significant decrease in ocular movements near targets is also observed. The number of brake pedal depressions and the rate of brake pedal depressions slightly decrease after surgery. Conclusions: This study demonstrates the potential beneficial effects of strabismus surgery on driving ability, with significant improvements in self-confidence during driving, VF, and driving on a simulator
A circular RNA generated from an intron of the insulin gene controls insulin secretion
Lisa Stoll, Adriana Rodríguez-Trejo, Claudiane Guay, Flora Brozzi, Mustafa Bilal Bayazit, Sonia Gattesco, Véronique Menoud, Jonathan Sobel, Ana Claudia Marques, Morten Trillingsgaard Venø, Jonathan Lou S. Esguerra, Mohammad Barghouth, Mara Suleiman, Lorella Marselli, Jørgen Kjems, Lena Eliasson, Erik Renström, Karim Bouzakri, Michel Pinget, Piero Marchetti, Romano Regazzi
Nature Communications, 2020, 11, pp.5611. ⟨10.1038/s41467-020-19381-w⟩
Article dans une revueAbstractFine-tuning of insulin release from pancreatic β-cells is essential to maintain blood glucose homeostasis. Here, we report that insulin secretion is regulated by a circular RNA containing the lariat sequence of the second intron of the insulin gene. Silencing of this intronic circular RNA in pancreatic islets leads to a decrease in the expression of key components of the secretory machinery of β-cells, resulting in impaired glucose- or KCl-induced insulin release and calcium signaling. The effect of the circular RNA is exerted at the transcriptional level and involves an interaction with the RNA-binding protein TAR DNA-binding protein 43 kDa (TDP-43). The level of this circularized intron is reduced in the islets of rodent diabetes models and of type 2 diabetic patients, possibly explaining their impaired secretory capacity. The study of this and other circular RNAs helps understanding β-cell dysfunction under diabetes conditions, and the etiology of this common metabolic disorder.
Association of systemic secondary brain insults and outcome in patients with convulsive status epilepticus: A post hoc study of a randomized controlled trial
Candice Fontaine, Virginie Lemiale, Matthieu Resche-Rigon, Maleka Schenck, Jonathan Chelly, Thomas Geeraerts, Aïcha Hamdi, Christophe Guitton, Ferhat Meziani, Jean Yves Lefrant, Bruno Mégarbane, Hervé Mentec, Cendrine Chaffaut, Alain Cariou, Stéphane Legriel
Neurology, 2020, 95 (18), pp.e2529-e2541. ⟨10.1212/WNL.0000000000010726⟩
Article dans une revueAbstractOBJECTIVE: To evaluate the association between systemic factors (mean arterial blood pressure, arterial partial pressures of carbon dioxide and oxygen, body temperature, natremia, and glycemia) on day 1 and neurologic outcomes 90 days after convulsive status epilepticus. METHODS: This was a post hoc analysis of the Evaluation of Therapeutic Hypothermia in Convulsive Status Epilepticus in Adults in Intensive Care (HYBERNATUS) multicenter open-label controlled trial, which randomized 270 critically ill patients with convulsive status epilepticus requiring mechanical ventilation to therapeutic hypothermia (32°C-34°C for 24 hours) plus standard care or standard care alone between March 2011 and January 2015. The primary endpoint was a Glasgow Outcome Scale score of 5, defining a favorable outcome, 90 days after convulsive status epilepticus. RESULTS: The 172 men and 93 women had a median age of 57 years (45-68 years). Among them, 130 (49%) had a history of epilepsy, and 59 (29%) had a primary brain insult. Convulsive status epilepticus was refractory in 86 (32%) patients, and total seizure duration was 67 minutes (35-120 minutes). The 90-day outcome was unfavorable in 126 (48%) patients. In multivariate analysis, none of the systemic secondary brain insults were associated with outcome; achieving an unfavorable outcome was associated with age >65 years (odds ratio [OR] 2.17, 95% confidence interval [CI] 1.20-3.85; p = 0.01), refractory convulsive status epilepticus (OR 2.00, 95% CI 1.04-3.85; p = 0.04), primary brain insult (OR 2.00, 95% CI 1.02-4.00; p = 0.047), and no bystander-witnessed seizure onset (OR 2.49, 95% CI 1.05-5.59; p = 0.04). CONCLUSIONS: In our population, systemic secondary brain insults were not associated with outcome in critically ill patients with convulsive status epilepticus. CLINICALTRIALSGOV IDENTIFIER: NCT01359332.
Prothrombotic phenotype in COVID-19 severe patients
Julie Helms, François Severac, Hamid Merdji, Eduardo Angles-Cano, Ferhat Meziani
Intensive Care Medicine, 2020, 46 (7), pp.1502-1503. ⟨10.1007/s00134-020-06082-7⟩
Article dans une revueAbstractIn our study, CTPA was performed in a population in which we were looking for a cause to clinical deterioration, which might be due to PE, but also to mechanical ventilation-acquired pneumonia. We therefore did not necessarily select a population with a strong suspicion of PE. We did not have a systematic standardized assessment of thromboembolic events as well. Imaging was thus performed based on the evolution of clinical or laboratory parameters. Respiratory (PaO2/FiO2) or hemodynamic deterioration, or evidence of dilated right ventricle—even without acute cor pulmonale—was explored by CTPA. A rapid elevation of D-dimer despite anticoagulation, reflecting increased thrombin generation, i.e., clot formation, and fibrinolysis, was investigated. D-dimer level did not differ at baseline between patients with/without pulmonary embolism, but increased with thrombotic events during ICU stay, with D-dimers > 5 mg/L in 92% of the patients. A sudden increase in D-dimer level along with clinical deterioration was an additional argument to explore patients by CTPA.
Mobile Dental Delivery System: An Effective Protocol for Hygiene and Disinfection
Damien Offner, Gabriel Fernandez de Grado, Marion Strub, Laure Belotti, Stéphanie Deboscker, Anne-Marie Musset
International Journal of Environmental Research and Public Health, 2020, 17 (5), pp.1603. ⟨10.3390/ijerph17051603⟩
Article dans une revueAbstractMobile dental delivery systems (MDDSs) are receiving growing interest for reaching isolated patients, as well as in dental care for fragile and hospitalized patients, with the advantage of being able to be used from room to room or during general anesthesia (GA) in an operating room. Therefore, ensuring the care safety is crucial. The aim of this study was to elaborate and assess an MDDS maintenance protocol, containing the management of dental unit waterlines and adapted to specific conditions such as dental care under GA. A step-by-step protocol was established and implemented for an MDDS used during dental care under GA in children. Samples of the output water were collected at J0, J+1, 3, 6, 12, and 24 months, and cultured to observe the microbiological quality of the water. All the results (heterotrophic plate count at 22 • C, at 37 • C, and specific pathogenic germs sought) showed an absence of contamination. The protocol presented was effective over time and allowed ensuring the safety of care to be ensured when using MDDS, even during dental procedures under GA. As a result, it could be implemented by any dental care delivery structure wanting to reinforce the safety of its practice.
Complex segmentectomy in the treatment of stage IA non-small-cell lung cancer
Anne Olland, Pierre-Emmanuel Falcoz
European Journal of Cardio-Thoracic Surgery, 2020, 57 (1), pp.122-123. ⟨10.1093/ejcts/ezz214⟩
Article dans une revueTGFα Promotes Chemoresistance of Malignant Pleural Mesothelioma
Bernard Staumont, Majeed Jamakhani, Chrisostome Costa, Fabian Vandermeers, Sathya Neelature Sriramareddy, Gaëlle Redouté, Céline Mascaux, Philippe Delvenne, Pascale Hubert, Roghaiyeh Safari, Luc Willems
Cancers, 2020, 12 (6), pp.1484. ⟨10.3390/cancers12061484⟩
Article dans une revueAbstractBackground: There is no standard chemotherapy for refractory or relapsing malignant pleural mesothelioma (MPM). Our previous reports nevertheless indicated that a combination of an anthracycline (doxorubicin) and a lysine deacetylase inhibitor (valproic acid, VPA) synergize to induce the apoptosis of MPM cells and reduce tumor growth in mouse models. A Phase I/II clinical trial indicated that this regimen is a promising therapeutic option for a proportion of MPM patients. Methods: The transcriptomes of mesothelioma cells were compared after Illumina HiSeq 4000 sequencing. The expression of differentially expressed genes was inhibited by RNA interference. Apoptosis was determined by cell cycle analysis and Annexin V/7-AAD labeling. Protein expression was assessed by immunoblotting. Preclinical efficacy was evaluated in BALB/c and NOD-SCID mice. Results: To understand the mechanisms involved in chemoresistance, the transcriptomes of two MPM cell lines displaying different responses to VPA-doxorubicin were compared. Among the differentially expressed genes, transforming growth factor alpha (TGFα) was associated with resistance to this regimen. The silencing of TGFα by RNA interference correlated with a significant increase in apoptosis, whereas the overexpression of TGFα desensitized MPM cells to the apoptosis induced by VPA and doxorubicin. The multi-targeted inhibition of histone deacetylase (HDAC), HER2 and TGFα receptor (epidermal growth factor receptor/EGFR) improved treatment efficacy in vitro and reduced tumor growth in two MPM mouse models. Finally, TGFα expression but not EGFR correlated with patient survival. Conclusions: Our data show that TGFα but not its receptor EGFR is a key factor in resistance to MPM chemotherapy. This observation may contribute to casting light on the promising but still controversial role of EGFR signaling in MPM therapy.
Autoimmune diseases in centrally reviewed thymic epithelial tumours (TET)
Jc Benitez Montanez, Me Boucher, Eric Dansin, M Kerjouan, J Mazieres, Eric Pichon, François Thillays, Pierre-Emmanuel Falcoz, B Roch, Youssef Oulkhouir, F Calcagno, Luc Thiberville, C Clement-Duchene, F Morin, P Missy, Pascal-Alexandre Thomas, Jean-Michel Maury, T Molina, Nicolas Girard, Benjamin Besse
Annals of Oncology, 2020, 31, ⟨10.1016/j.annonc.2020.08.1442⟩
Article dans une revueAbstractBackgroundThere have been wide variations in the reported prevalence (up to 30%) of autoimmune disorders (AID) in TET patients (pts) in small single-center series. RYTHMIC (Réseau tumeurs THYMiques et Cancer) is a French network mandated to systematically discuss every case of TET. A histopathology central review of the samples is performed within a National Histopathological Tumor Board (NHTB). We aimed to assess the prevalence of AID in a large cohort after pathological central review.MethodsRYTHMIC database, hosted by IFCT (French Intergroup of Thoracic Cancerology), prospectively includes all consecutive pts with a diagnosis of TET discussed in French national or regional tumor boards. A expert pathological panel reviews all cases discussed during NHTBs. We analyzed epidemiological, clinical and pathological characteristics of pts.ResultsFrom January 2012 to December 2019, 2909 pts were included in the database. The median age at diagnosis of TET was 60 (range of 14-87), 53.6% were male. About 24% of the pts tumor samples (n=701) were centrally reviewed. In this subgroup of patients, the % of AID was overall similar to the whole cohort, 139/701 (19.8%). Three pts (2%) had more than 1 AID. Among the events, 96 were myasthenia gravis (MG) (69%), 9 Good’s syndrome (6.7%), 5 pure red cell aplasia (3.5%), 7 thyroiditis (5%) and 8 lupus (5.7%). Among pts presenting AID in the cohort (n=701), B2 was the most common subtype before and AB after central review, respectively. Before and after central review, the prevalence of different subtypes is shown in the table.ConclusionsAround 1 out of 5 TET patients present an AID. The highest prevalence of AID after pathological central review was in B3 then B2 and B1 subtypes. Immunotherapy should be restricted to thymic carcinoma where the rate of AID is the lowest (3.3%).
Thrombin Induces SGLT1 and SGLT2 Expression to Promote the AT1R/NADPH Oxidase-Mediated Pro-oxidant Response Inducing Senescence in Atrial Endothelial Cells
Hira Hasan, Sin-Hee Park, Eugenia Belcastro, Cyril Auger, Hyun-Ho Lee, Valerie Schini-Kerth
Diabetes, 2020, 69, ⟨10.2337/db20-465-P⟩
Article dans une revuePatients with Initial Negative RT-PCR and Typical Imaging of COVID-19: Clinical Implications
Florent Baicry, Pierrick Le Borgne, Thibaut Fabacher, Martin Behr, Elena Laura Lemaitre, Paul-Albert Gayol, Sébastien Harscoat, Nirvan Issur, Sabrina Garnier-Kepka, Mickaël Ohana, Pascal Bilbault, Mathieu Oberlin
Journal of Clinical Medicine, 2020, 9 (9), pp.3014. ⟨10.3390/jcm9093014⟩
Article dans une revueAbstractThe sensitivity of reverse transcriptase polymerase chain reaction (RT-PCR) has been questioned due to negative results in some patients who were strongly suspected of having coronavirus disease 2019 (COVID-19). The aim of our study was to analyze the prognosis of infected patients with initial negative RT-PCR in the emergency department (ED) during the COVID-19 outbreak. This study included two cohorts of adult inpatients admitted into the ED. All patients who were suspected to be infected with SARS-CoV-2 and who underwent a typical chest CT imaging were included. Thus, we studied two distinct cohorts: patients with positive RT-PCR (PCR+) and those with negative initial RT-PCR (PCR-). The data were analyzed using Bayesian methods. We included 66 patients in the PCR- group and 198 in the PCR+ group. The baseline characteristics did not differ except in terms of a proportion of lower chronic respiratory disease in the PCR- group. We noted a less severe clinical presentation in the PCR- group (lower respiratory rate, lower oxygen need and mechanical ventilation requirement). Hospital mortality (9.1% vs. 9.6%) did not differ between the two groups. Despite an initially less serious clinical presentation, the mortality of patients infected by SARS-CoV-2 with a negative RT-PCR did not differ from those with positive RT-PCR.
Selective Influence of Smoking on Periodontal Treatment Outcomes after 3 Years of Follow-up
Taoufik Boulaamaim, Henri Tenenbaum, Jean-Luc Davideau, Olivier Huck
Oral Health and Preventive Dentistry, 2020, 18 (4), pp.823-831. ⟨10.3290/j.ohpd.a45087⟩
Article dans une revueAbstractPurpose: The impact of smoking habits on periodontal treatment has not been clearly elucidated. This study aimed to specify the effects of cigarette consumption and nicotine addiction on periodontal therapy. Materials and Methods: In this retrospective case-control study. 20 moderate smokers and 20 non-smokers with severe periodontitis were examined after initial diagnosis, and non-surgical active and supportive therapies for 1-6 years (mean follow-up = 3.37 years). FagerstrOm's test of nicotine dependence (FIND) was evaluated at re-examination. Treatment efficacy was assessed by periodontal pocket probing depth (PPD) changes and number of teeth lost per year (TL). Bayesian multilevel and regression analyses were performed at site, tooth, and patient levels. Results: During the mean follow-up period of > 3 years including active and supportive periodontal therapies, mean PPD, PPD > 3 mm and PPD > 7 mm percentage reductions were 1.03. 1.48 and 2.57 times statistically significantly less pronounced, respectively, in smokers than in non-smokers. Multilevel analysis showed that the variability of PPD > 7 mm reduction was mainly associated with patient-level factors. Smokers presented a higher risk for periodontitis progression. In smokers, periodontal parameter improvement was less pronounced in the maxilla and molars. The mean TL was related to the FIND score, not to cigarette consumption. Regression analysis did not demonstrate other influences of demographic and periodontal treatment characteristics on treatment outcomes, except patient age. Conclusion: Smoking negatively impacted periodontal treatment outcomes at specific tooth sites (deep pockets. maxillary molars) and periodontitis progression, independent of other risk factors.
Validation of the QR1 Antibody for the Evaluation of PD-L1 Expression in Non-Small Cell Lung Adenocarcinomas
Nicolas Brandone, Celine Mascaux, Kevin Caselles, Isabelle Rouquette, Sylvie Lantuejoul, Stéphane Garcia
Applied Immunohistochemistry and Molecular Morphology : Aimm, 2020, 28 (1), pp.23-29. ⟨10.1097/PAI.0000000000000758⟩
Article dans une revueAbstractThe evaluation of Programmed cell Death Ligand 1 (PD-L1) expression in the tumor cells with immunohistochemistry is a mandatory diagnostic step in the treatment of lung cancer. It is important to utilize validated antibodies that can reliably detect PD-L1 positive cells. Different antibodies have already been studied. In this present study, we compared a new clone (QR1, Quartett) with reference clones to determine if it can be used in place of previously identified reference clones. We built a tissue micro array (TMA) from 110 lung adenocarcinomas and compared it using immunohistodetection of four different clones: QR1, 22c3, Sp263, and E1L3N. We analyzed the correlation between the sample duplicates for each clone and then a correlation and the concordance between the clones were calculated. A total of 101 patients were exploitable; the duplicates for each clone had a strong correlation. The correlation was the strongest (r=0.82) between QR1 and 22c3 and less strong with the other clones. Totals of 78%, 79%, and 97% of the QR1 cases were concordant with 22c3 for the thresholds of <1%, 1% to 49%, and ≥50%, respectively. The sensitivities and specificities of QR1, compared with 22c3, were >75% and 81%, respectively. PD-L1 expression, analyzed in lung adenocarcinomas with QR1, is highly correlated and concordant with the main reference clone used in most laboratories (22c3). It can be used to replace the latter in clinical routine.
Impact of Molar Furcations on Photodynamic Therapy Outcomes: A 6-Month Split-Mouth Randomized Clinical Trial
Aymeric Courval, Laetitia Harmouche, Catherine Petit, Olivier Huck, François Séverac, Jean-Luc Davideau, Anne Mathieu
International Journal of Environmental Research and Public Health, 2020, 17 (11), pp.4162. ⟨10.3390/ijerph17114162⟩
Article dans une revueAbstractThe effectiveness of adjunctive photodynamic treatment (PDT) to non-surgical periodontal therapy has been shown to depend on initial periodontal status. As molar furcation involvement impairs healing response to non-surgical periodontal therapy, the aim of this study was to evaluate the impact of furcation involvement on PDT outcomes. Thirty-six patients suffering from severe chronic periodontitis were included in a 6-month split-mouth randomized clinical trial. PDT applications used the toluidine blue O and a light-emitting diode (LED) with a red spectrum. Repeated PDT applications were performed in addition to non-surgical periodontal treatment at baseline and at 3-months. Pocket probing depth (PPD), plaque index, bleeding on probing, and clinical attachment level were recorded at baseline, and again at 3- and 6-months. Furcation sites of molars were compared to other sites of molars and non-molars. Multilevel analysis showed no PDT effect in molar furcation sites while an additional significant reduction (odds ratio = 0.67) of pockets with PPD > 5 mm in other sites at 3-months was measured. PPD reduction appeared delayed in molar furcation sites treated with PDT. There is no additional apparent benefit to use PDT in molar furcation sites for the reduction of pockets with PPD > 5 mm contrary to other sites.
Incidence of sleep apnea and association with atrial fibrillation in an unselected pacemaker population: Results of the observational RESPIRE study
Julio Marti-Almor, Pedro Marques, Laurence Jesel, Rodrigue Garcia, Enrico Di Girolamo, Fabio Locati, Pascal Defaye, Paul Venables, Antoine Dompnier, Aina Barcelo, Herbert Nägele, Haran Burri
Heart Rhythm, 2020, 17 (2), pp.195-202. ⟨10.1016/j.hrthm.2019.09.001⟩
Article dans une revueAbstractBACKGROUND: Patients with atrial fibrillation (AF) often have sleep apnea (SA), but diagnosis of SA with polysomnography is costly. SA monitoring is a pacemaker feature that measures respiratory disturbance index, the sum of abnormal respiratory events divided by sleep duration. OBJECTIVE: The purpose of this study was to evaluate the incidence and severity of SA and its association with AF in an unselected population fitted with pacemakers. METHODS: RESPIRE (REgistry of Sleep APnea monItoring and Atrial Fibrillation in pacemakeR patients) was a multicenter, international, observational, open-label study following adult subjects for 18 months after implantation with an SA monitoring-enabled dual-chamber pacemaker. Severe SA was defined as average respiratory disturbance index ≥20 from implantation to follow-up visit. The first co-primary end point was the difference in significant AF (cumulative AF episodes lasting ≥24 hours over 2 consecutive days) between subjects with severe and those nonsevere SA at 12 months in the full analysis set (N = 553). The second co-primary end point was the rate of major serious adverse events at 18 months in the modified intention-to-treat set (N = 1024). RESULTS: Severe SA was detected in 31.1% (172 of 553). A higher incidence of significant AF was reported in patients with severe SA than in patients with nonsevere SA (25.0% vs 13.9%; difference 11.1%; 95% confidence interval 3.7%-18.4%; P = .002). Significant AF increased with time in both groups, but at a faster rate in the severe SA group. No intergroup difference in the overall rate of major serious adverse events was observed (P = .065). CONCLUSION: SA screening over 12 months identified severe SA in almost one-third of unselected patients fitted with pacemakers. Severe SA was associated with a higher incidence of significant AF.
Pneumonectomy for trauma and war casualties
João Santos Silva, Paulo Almeida Calvinho, Anne Olland, Pierre-Emmanuel Falcoz
Shanghai Chest, 2020, 4, pp.2-2. ⟨10.21037/shc.2019.10.08⟩
Article dans une revueAbstractChest trauma has been described in the literature since 3000 bc. This trauma is usually not isolated and associated with high mortality and morbidity. The majority of the patients with thoracic trauma are not operated, being reported emergent thoracotomies between 1-12% of all chest traumas and of this only 1% to 2% of thoracic trauma patients need a pneumonectomy with mortality rates from 50% to 100%, with a slight improvement tendency, having worst results those with blunt trauma. In a war scenario around 25% of the casualties have thoracic trauma associated, but there is no data available related to the pneumonectomy itself. Has been shown that victim stabilization, eventually with hilar control and quick referral to the central hospital improved patient survival and outcomes. Outcomes in war victims have been improving over time and Medicine has evolved much to the learnings during war times. The presence of a cardiothoracic surgeon in an emergency scenario improves the outcome not only due to their technical skills but also to their soft skills. It is written that the presence of these professional can induce a sense of confidence and security.
COVID-19 Related Coagulopathy: A Distinct Entity?
Benjamin Marchandot, Laurent Sattler, Laurence Jesel, Kensuke Matsushita, Valerie Schini-Kerth, Lelia Grunebaum, Olivier Morel
Journal of Clinical Medicine, 2020, 9 (6), pp.1651. ⟨10.3390/jcm9061651⟩
Article dans une revueAbstractThe coronavirus disease 2019 (COVID-19) pandemic has impacted healthcare communities across the globe on an unprecedented scale. Patients have had diverse clinical outcomes, but those developing COVID-19-related coagulopathy have shown a disproportionately worse outcome. This narrative review summarizes current evidence regarding the epidemiology, clinical features, known and presumed pathophysiology-based models, and treatment guidance regarding COVID-19 coagulopathy.
Does lobar or size-reduced lung transplantation offer satisfactory early and late outcomes?
João Santos Silva, Anne Olland, Gilbert Massard, Pierre-Emmanuel Falcoz
Interactive Cardiovascular and Thoracic Surgery, 2020, 31 (1), pp.93-97. ⟨10.1093/icvts/ivaa051⟩
Article dans une revueAbstractA best evidence topic was constructed according to a structured protocol. The question addressed was whether size-reduced or lobar lung transplantation (LLTx) offers the same benefit as classic lung transplantation (LTx). Of the 147 papers found using the reported search, 9 were selected to provide the best evidence. Details of the studies regarding authors, date, journal, country of publication, study type, group studied, relevant outcomes and results are given. All studies reported survival rates of LLTx and most compared it with classical LTx. No statistical differences were reported in medium term and long term. Two of the studies reported a higher incidence of postoperative complications, such as the need for cardiopulmonary bypass, reperfusion oedema or primary graft dysfunction, and longer intubation or intensive care unit stay times. Although the largest study showed a significantly worse 1-year survival in LLTx, a sub-analysis considering patients successfully discharged showed similar outcomes at 1, 3 and 5 years when compared with classic LTx patients. We conclude that LLTx is a valid therapeutic option for recipients with significant donor size mismatch, offering similar outcomes as classical LTx in the medium term and long term.
Accuracy of the correction obtained after tibial valgus osteotomy. Comparison of the use of the Hernigou table and the so-called classical method
Xavier Nicolau, François Bonnomet, Grégoire Micicoi, David Eichler, Matthieu Ollivier, Henri Favreau, Matthieu Ehlinger
International Orthopaedics, 2020, 44 (12), pp.2613-2619. ⟨10.1007/s00264-020-04777-6⟩
Article dans une revueAbstractIntroduction Medial valgus-producing tibial osteotomy (MVTO) is classicallyusedtotreat earlymedialfemorotibialosteoarthritis. Long-term results depend on the mechanical femorotibial angle (HKA) obtained at the end of the procedure. A correction goal between 3 and 6° valgus is commonly accepted. Several planning methods are described to achieve this goal, but none is superior to the other. Objective The main objective was to compare the accuracy of the correction obtained using either the Hernigou table (HT) or a so-called conventional method (CM) for which 1° of correction corresponds to 1° of osteotomy opening. The secondary objective was to analyze the variations observed in the sagittal plane on the tibial slope and on the patellar height. The working hypothesis was that the HT allowed a more accurate correction and that the tibial slope and patellar height were modified in both groups. Material and method In this monocentric and retrospective study, two senior surgeons operated on 39 knees (18 in the CM group, 21 in the HT group) between January 1, 2009 and December 31, 2014. The operator was unique for each group and expert in the technique used. The correction objective chosen for each patient, and written in the operative report, was considered as the one to be achieved. The surgical correction was the difference between the pre-operative and immediate post-operative data (< 5 J) for the mechanical tibial angle (MTA) and the hip-knee-ankle (HKA) angle. Surgical accuracy, where a value close to 0 is optimal, was the absolute value of the difference between the surgical correction performed and the goal set by the surgeon. Results The median surgical accuracy on the MTA was 3.5° [0.2-7.4] versus 1.4° [0-4.1] in the CM and HT groups, respectively (p = 0.006). In multivariate analysis, with the same objective, the CM had a significantly lower accuracy of 1.9° ± 0.8 (p =0.02). For HKA, the median accuracy was 3.1° [0.3-7.3] versus 0.8° [0-5] in the CM and HT groups, respectively (p = 0.006). Five (5/18, 28%) and 16 (16/21, 76%) knees were within 3° of the target in the CM and HT groups, respectively (p = 0.004). The median tibial slope increased in both groups. This increase was significantly greater in the CM group compared with the HT group, with 5.5° [− 0.3-13] versus 0.5 [− 5.2-5.6], respectively (p < 0.001). The median Caton-Deschamps index decreased (patella lowered) in both groups after surgery, by − 0.21 [− 1.03; − 0.05] and − 0.14 [− 0.4-0.16], but without significant difference (p = 0.19). In univariate analysis, changes in tibial slope and patellar height were not significantly related to frontal surgical correction performed according to ΔMTA (R 2 =0.07; p =0.055) and (R 2 = − 0.02; p = 0.54) respectively. Discussion The correction set by the surgeons was achieved with greater accuracy and more frequently in the HT group, confirming the working hypothesis. The HT is therefore recommended as a simple way of achieving the set objective; the tibial slope and patellar height were modified unaffected by the frontal correction performed.
Revision of anterior cruciate ligament reconstruction with a pedicled quadruple hamstring autograft
Henri Favreau, David Eichler, François Bonnomet, Sebastien Lustig, Philippe Adam, Matthieu Ehlinger
European Journal of Orthopaedic Surgery & Traumatology, 2020, 30 (6), pp.1033-1038. ⟨10.1007/s00590-020-02661-y⟩
Article dans une revueAbstractIntroduction: Results of iterative ACL reconstructions are lower than after primary reconstructions. Our aim was to report the results of a retrospective series of revision using pedicled quadruple hamstring autograft. The hypothesis was that the results were satisfactory and comparable to the literature. Methods: The study period was from January 2012 to December 2014. Fourteen patients (average age 26) were included. A fascia lata graft was used 12 times for primary reconstruction. Trauma was the cause of failure 12 times. The time interval between primary reconstruction and revision was 6.2 years. Preoperative scores used were LYSHOLM, TEGNER and IKDC. Sagittal stability was measured using the KT-1000 device. X-rays and MRI were performed to confirm the diagnosis, look for preoperative osteoarthritis and evaluate the position of the bony tunnels (Bernard and Hertel). Bone tunnels were in a proper position 14 times. Results: At 45-month follow-up, improvement of objective IKDC score was significant (85.7% A/B, p < 0.0002) as well as subjective IKDC score (85.5, p < 0.0004). A significant improvement was established for the LYSHOLM score (91.8, p = 0.001) using the Wilcoxon test. The average LYSHOLM score was 92% (p > 0.5), and the average TEGNER score was 5.5 (p = 0.003). The Lachman test found a hard stop in all patients. The pivot shift test was negative for 78.5% of the cases. The laxity measurement found 12 cases with less than 3 mm. One persistent distal hypoesthesia at 2-year follow-up was observed. Conclusion: The hypothesis was confirmed. This series differs by the cause of failure, which was essentially traumatic, and the initial predominance of a fascia lata graft. These results remain to be confirmed.
Biomechanical effects of stitches on the intra-articular mid-substance of quadruple hamstring-tendon grafts for anterior cruciate ligament reconstruction – a pilot comparative cadaveric study
Maurise Saur, Philippe Clavert, Francois Bonnomet, Henri Favreau, Matthieu Ehlinger
Knee Surgery & Related Research, 2020, 32 (1), pp.39. ⟨10.1186/s43019-020-00059-y⟩
Article dans une revueAbstractBackground: There is little data in the literature regarding the preparation methods of the intra-articular portion of quadruple hamstring-tendon grafts for anterior cruciate ligament (ACL) reconstruction. The aim of this study was to compare the biomechanical properties of a sutured transplant to that of a non-sutured transplant. The hypothesis was that adding stitches to the intra-articular portion of the graft increased its resistance.Method: A comparative cadaveric study was carried out on five pairs of knees. The average age of the cadavers was 68 years. The exclusion criterion was past knee surgery. In the Sutured Group (SG) two stitches were made on the grafts. No stitches were made on the grafts of the Non-sutured Group (NSG). A tensile failure test was carried out using an Instron® loading machine. The maximal load to failure and stiffness were recorded and we observed the mode of failure for each graft. Statistical analysis was performed using the Wilcoxon rank sum test. Level of significance was set at p < 0.05.Results: The hypothesis proposed was not confirmed; adding stitches to the intra-articular portion of the four-strand hamstring-tendon graft does not increase its biomechanical properties. The maximal load to failure was 233.5 N ± 40.6 (186.7–274.5 N) for the NSG, 19.6% higher than for the SG which was 195.2 N ± 42.9 (139.0–238.2 N). Nevertheless, the difference observed was not statistically significant (p = 0.188). The stiffness of the grafts for the NSG was 23.5 N/mm ± 5.3 (17.8–29 N/mm) and 19.7 N/mm ± 5.5 (13.2–24.7 N/mm) for the SG grafts. Overall stiffness values for the NSG were 19% higher than those of the SG; however, the results were not statistically significant (p = 0.438). The failure mode was a rupture at the fixation point except for one sample from the SG which failed at an intra-articular stitch.Conclusion: Whilst the initial hypothesis was not verified, nevertheless, the maximal loads to failure and stiffness were approximately 20% higher when there were no intra-articular stitches compared to the situation where stitches were added to the intra-articular portion of the graft. This was a cadaveric pilot study and, therefore, whilst we are not able to extend our results to clinical practice, the outcomes would indicate the need for further development of this and related protocols deriving from the question of whether there is weakening the graft when adding stitches to its mid-substance. These results remain to be confirmed by further research.
Should we screen patients for carotid artery disease before lung cancer resection?
Anne Charloux, Cézar Matau, Jérémie Jégu, Olivier Rouyer, Pierre-Emmanuel Falcoz, Elisabeth Quoix
Journal of Thoracic Disease, 2020, 12 (11), pp.6743 - 6751. ⟨10.21037/jtd-20-1117⟩
Article dans une revueAbstractBackground: Postoperative stroke is a rare complication after lung cancer surgery but has a high mortality rate. No strategy has been recommended to detect carotid artery disease preoperatively in lung cancer patients. The main objective of this study was to evaluate whether a routine carotid duplex ultrasound (DUS) altered the preoperative management of these patients. Methods: We performed a single-centre, retrospective study of all patients referred for lung cancer resection over a two-year period and reviewed the available carotid DUS results. We quantified the number of carotid artery disease diagnosis, the severity of the disease according to DUS results, and the number of treatments initiated preoperatively. We examined relationships between cardiovascular history and preoperative carotid artery disease diagnosis. Results: Among the 398 consecutive lung surgery patients, 6% had a preoperative history of stroke or transient ischemic attack, and one developed a postoperative stroke, of cardioembolic origin. Three hundred and seven patients (77%) had preoperative carotid DUS. Carotid DUS results elicited anti-platelet therapy initiation or endarterectomy before lung resection in 7 out of these 307 patients (2.3%). One hundred and seventy-one carotid DUS were retrospectively reviewed by an expert, who diagnosed carotid stenosis >50% and occlusion in 2.3% and 1.2% of patients, respectively. Abnormal carotid DUS was associated with history of lower extremity artery disease (P<0.001), diabetes mellitus (P<0.05) and dyslipidemia (P<0.05). Conclusions: This retrospective observational study showed that routine preoperative carotid DUS led to few carotid stenosis detection and few perioperative management alterations. Carotid artery disease diagnosis was associated with cardiovascular history and risk factors. Future studies should examine how to select patients who will benefit from a preoperative carotid DUS.
Dental and maxillofacial features of Noonan Syndrome: Case series of ten patients
Jean-Christophe Lutz, Romain Nicot, Matthias Schlund, Elise Schaefer, Fabien Bornert, Florence Fioretti, Joël Ferri
Journal of Cranio-Maxillofacial Surgery, 2020, 48 (3), pp.242-250. ⟨10.1016/j.jcms.2020.01.011⟩
Article dans une revueAbstractNoonan syndrome (NS) is a relatively common congenital multiple-anomaly syndrome, resembling Turner syndrome, but without chromosomal anomaly. Besides the unusual facies, the maxillofacial and dental features of patients with NS are not well-summarized in the literature. The aim of this study was to describe these features and propose specific treatment guidelines for practitioners involved in oral and maxillofacial care. A retrospective multicentric study was conducted of 14 patients who were referred for NS screening. In total, 10 patients were found to carry a mutation involved in NS or NS-related disorders. Fifty percent of the mutations affected PTPN11. All patients presented with the typical extraoral features, such as macrocephaly, hypertelorism, ptosis, triangular face shape and ear dystrophy. Intraoral manifestations, including malocclusion (maxillary transversal deficiency, crossbite, anterior open-bite and class II malocclusion), dental anomalies (delayed eruption, agenesis and dystrophy, odontoma) and radiologic jaw lesions were identified in five out of 10 patients. These findings were searched in a review of the literature to obtain a comprehensive description of oral and maxillofacial features in patients with NS. The proposed treatment guidelines emphasize frequent coagulation anomalies that need to be considered prior to surgery. Early dental assessment and yearly follow-up with oral prophylaxis are recommended. Orthodontics and orthognathic surgery are also of primary importance in the management of NS patients. (C) 2020 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.
Prioritising outcomes for evaluating eosinophil-guided corticosteroid therapy among patients with acute COPD exacerbations requiring hospitalisation: a Delphi consensus study
Carey Meredith Suehs, Maéva Zysman, Cécile Chenivesse, Pierre-Régis Burgel, F. Couturaud, Gaetan Deslée, Patrick Berger, Chantal Raherison, Gilles Devouassoux, Christophe Brousse, Nicolas Roche, Mathieu Molimard, Thierry Chinet, Philippe Devillier, Pascal Chanez, Romain Kessler, Alain Didier, Yan Martinat, Olivier Le Rouzic, Arnaud Bourdin
BMJ Open, 2020, 10 (7), pp.e035811. ⟨10.1136/bmjopen-2019-035811⟩
Article dans une revueAbstractObjectives Presently, those outcomes that should be prioritised for chronic obstructive pulmonary disease (COPD) exacerbation studies remain unclear. In order to coordinate multicentre studies on eosinophilia-driven corticosteroid therapy for patients hospitalised for acute exacerbation of COPD (AECOPD), we aimed to find consensus among experts in the domain regarding the prioritisation of outcomes. Design A modified Delphi study was proposed to recognised COPD experts. Two brainstorming questionnaires were used to collect potential outcomes. Four subsequent rounds of questionnaires were used to rank items according to a six-point Likert scale for their importance in the protocol, as well as for being the primary outcome. Priority outcome criteria were predefined as those for which ≥70% of experts indicated that the outcome was essential for interpreting study results. Setting COPD exacerbation management in France. Participants 34 experts recommended by the French Language Pulmonology Society were invited to participate. Of the latter, 21 experts participated in brainstorming, and 19 participated in all four ranking rounds. Results 105 outcomes were ranked. Two achieved consensus as candidate primary outcomes: (1) treatment failure defined as death from any cause or the need for intubation and mechanical ventilation, readmission because of COPD or intensification of pharmacologic therapy, and (2) the time required to meet predefined discharge criteria. The 10 secondary priority outcomes included survival, time with no sign of improvement, episodes of hospitalisation, exacerbation, pneumonia, mechanical or non-invasive ventilation and oxygen use, as well as comorbidities during the initial hospitalisation. Conclusions This Delphi consensus project generated and prioritised a great many outcomes, documenting current expert views concerning a diversity of COPD endpoints. Among the latter, 12 reached consensus as priority outcomes for evaluating the efficacy of eosinophil-driven corticosteroid therapy in AECOPD inpatients.
Atrial Fibrillation Progression Is Associated with Cell Senescence Burden as Determined by p53 and p16 Expression
Laurence Jesel, Malak Abbas, Sin-Hee Park, Kensuke Matsushita, Michel Kindo, Hira Hasan, Cyril Auger, Chisato Sato, Patrick Ohlmann, Jean-Philippe Mazzucotelli, Florence Toti, Gilles Kauffenstein, Valérie Schini-Kerth, Olivier Morel
Journal of Clinical Medicine, 2020, 9 (1), pp.36. ⟨10.3390/jcm9010036⟩
Article dans une revueAbstractBackground: Whilst the link between aging and thrombogenicity in atrial fibrillation (AF) is well established, the cellular underlying mechanisms are unknown. In AF, the role of senescence in tissue remodeling and prothrombotic state remains unclear. Aims: We investigated the link between AF and senescence by comparing the expression of senescence markers (p53 and p16), with prothrombotic and inflammatory proteins in right atrial appendages from patients in AF and sinus rhythm (SR). Methods: The right atrial appendages of 147 patients undergoing open-heart surgery were harvested. Twenty-one non-valvular AF patients, including paroxysmal (PAF) or permanent AF (PmAF), were matched with 21 SR patients according to CHA2DS2-VASc score and treatment. Protein expression was assessed by tissue lysates Western blot analysis. Results: The expression of p53, p16, and tissue factor (TF) was significantly increased in AF compared to SR (0.91 ± 0.31 vs. 0.58 ± 0.31, p = 0.001; 0.76 ± 0.32 vs. 0.35 ± 0.18, p = 0.0001; 0.88 ± 0.32 vs. 0.68 ± 0.29, p = 0.045, respectively). Expression of endothelial NO synthase (eNOS) was lower in AF (0.25 ± 0.15 vs. 0.35 ± 0.12, p = 0.023). There was a stepwise increase of p53, p16, TF, matrix metalloproteinase-9, and an eNOS progressive decrease between SR, PAF, and PmAF. AF was the only predictive factor of p53 and p16 elevation in multivariate analysis. Conclusions: The study brought new evidence indicating that AF progression is strongly related to human atrial senescence burden and points at a link between senescence, thrombogenicity, endothelial dysfunction and atrial remodeling.
Reply to Wengenmayer et al. : Extracorporeal Membrane Oxygenation for Critically Ill Patients with COVID-19–related Acute Respiratory Distress Syndrome: Worth the Effort!
Alexandra Monnier, Pierre-Emmanuel Falcoz, Julie Helms, Ferhat Meziani
American Journal of Respiratory and Critical Care Medicine, 2020, 202 (10), pp.1479-1480. ⟨10.1164/rccm.202007-2670LE⟩
Article dans une revueEffect of adding vildagliptin to insulin in haemodialysed patients with type 2 diabetes: The VILDDIAL study, a randomized, multicentre, prospective study
Marion Munch, Laurent Meyer, Thierry Hannedouche, Kristian Kunz, Farideh Alenabi, Patrice Winiszewski, Philippe Baltzinger, Agnès Smagala, Alexandre Klein, François Dorey, Dominique Fleury, Odile Verier-Mine, Bruno Guerci, Joëlle Cridlig, Sophie Borot, Nicolas Meyer, Samy Hadjadj, François Chantrel, Laurence Kessler
Diabetes, Obesity and Metabolism, 2020, 22 (6), pp.978-987. ⟨10.1111/dom.13988⟩
Article dans une revueAbstractAIM: To evaluate the effect of adding the dipeptidyl-peptidase-4 inhibitor vildagliptin to insulin on the glycaemic control of patients with type 2 diabetes undergoing haemodialysis. METHODS: Overall, 65 insulin-treated patients with type 2 diabetes undergoing haemodialysis (HbA1c: 7.3% ± 1.1%; age: 70.5 ± 8.5 years) were randomized (1:1) either to receive vildagliptin 50 mg/day in addition to insulin (vildagliptin-insulin group) or to pursue their usual insulin regimen (insulin-only group). Continuous glucose monitoring (CGM) was performed for 48 ± 6 hours at baseline and at week 12. The primary study endpoint was change from baseline in mean interstitial glucose using CGM. The secondary endpoints included other CGM variables and glucose control markers. RESULTS: After 12 weeks, a greater reduction in mean CGM glucose from baseline was observed in the vildagliptin-insulin group compared with the insulin-only group, although the between-treatment difference was not statistically significant (mean difference [CI 95%]: -0.96 mmol/L [-2.09; 0.18] vs. -0.29 mmol/L [-1.29; 0.76], P = 0.32). However, a significant decrease from baseline in HbA1c, glycated albumin and insulin daily doses was observed in the vildagliptin-insulin group versus the insulin-only group (-0.6% [-1.19; -0.1], P < 0.01), in the vildagliptin-insulin group versus no change in the insulin-only group (-130.6 μmol/L [-271; 10.7] vs. +36.2 μmol/L [-164.4; 236.9], P = 0.04 and - 5.9 IU/day [-1.8; 7.1] vs. +1.1 IU/day [-14.5; 16.6], P = 0.01, respectively). There was no significant difference in the percentage of time spent in hypoglycaemia using CGM, occurrence of severe hypoglycaemia or number of adverse events. CONCLUSION: In this study, vildagliptin added to insulin improved glycaemic control with an associated insulin-sparing effect in patients with type 2 diabetes undergoing haemodialysis and was well tolerated.
Contact Lenses and Infectious Keratitis: From a Case-Control Study to a Computation of the Risk for Wearers
Arnaud Sauer, Mathieu Greth, Jonathan Letsch, Pierre-Henri Becmeur, Vincent Borderie, Vincent Daien, Alain Bron, Catherine Creuzot-Garcher, Laurent Kodjikian, Carole Burillon, Pierre-Yves Robert, Frédéric Mouriaux, Marc Muraine, Julie Gueudry, Francois Malecaze, Béatrice Cochener, Christophe Chiquet, Marc Labetoulle, Tristan Bourcier
Cornea, 2020, 39 (6), pp.769-774. ⟨10.1097/ICO.0000000000002248⟩
Article dans une revueAbstractPurpose: Contact lens (CL)-related microbial keratitis (MK) has major public health implications, with about 300 million wearers worldwide, and certain potentially modifiable risk factors. This study aimed to identify the risk factors of CL-related MK. Methods: A multicenter case-control study was conducted between 2014 and 2017. Cases presenting with CL-related MK were submitted to an anonymous 52-item questionnaire, which was also completed by healthy controls. Univariate followed by multivariate logistic regression analysis was performed. Risk factors for CL-related MK were given as odds ratio (OR) with 95% confidence interval and P-value. Results: The study included a total of 2267 patients (1198 cases and 1069 controls). The MK risk factors for the daily disposable lenses group were exceeding the lens renewal period (OR = 9.16, P = 0.008) and occasionally wearing CL when sleeping (OR = 15.83, P = 0.035). The most important risk factors in the nondaily disposable lenses group were lens cleaning solution distributed by eye care brands (OR = 3.50, P < 0.001) and failure to renew lens cases (OR = 3.39, P = 0.001). Statistically and clinically significant variables were used to establish the MK risk equation for CL wearers, allowing an individual calculation of the risk of MK under lenses. Conclusions: The MK risk equation is a valuable tool for educating patients about the risks associated with wearing CL. It allows the patient to be informed about their overall risk of infection while detailing the precipitating elements of the infectious risk with the aim of modifying risk behavior.
Cryothérapie totale de la prostate sous IRM par voie périnéale : résultats carcinologiques et facteurs prédictifs [Percutaneous MR-guided prostate cancer cryoablation: Predictive factors and oncologic outcomes]
Maxime Gaullier, Thibault Tricard, Julien Garnon, Roberto Luigi Cazzato, Pierre Munier, Pierre de Marini, Pierre Werle, Veronique Lindner, Afshin Gangi, Hervé Lang
Progrès en Urologie, 2020, 30 (1), pp.12-18. ⟨10.1016/j.purol.2019.10.006⟩
Article dans une revueAbstractOBJECTIVE: To determine the pejorative predictive factors on oncologic outcomes of percutaneous MR-guided whole gland prostate cancer cryoablation (CA). METHODS: Medical records of patients treated from 2009 to 2012, to assess medium-term oncologic outcomes, were reviewed. Prostate biopsies were performed in local recurrence suspicion (biochemical failure, MR follow-up failure). RESULTS: Among 18 patients, mean age of 72.6 (61-78), 2 (11 %) and 7 (38.9 %) biological and reported biopsy-proven local recurrence respectively with our initial technic of CA. Mean follow-up and recurrence were 56.3 (±21.7) and 20.7 (±13.9) months respectively. A previous treatment of prostate cancer (P=0.5), pre-treatment PSA (P=0.2), pre-treatment Gleason/ISUP score (P=0.4), nadir PSA post-CA (P=0.22) were not associated with recurrence. Bilateral positive cores appears as a pejorative predictive factor (P=0.04). However mean pre-treatment positive cores percentage, 25 (±16.5) in responding patients versus 40.7 (±25.2) in case of recurrence, and maximum percentage of cancer extent in each positive core, 10.6 (±9.3) in responding patients versus 18.7 (±16.5) in case of recurrence, seemed associated with local recurrence after prostate CA but our analysis wasn't able to find a difference (P=0.09 and P=0.3 respectively) due to a lack of power. CONCLUSION: Bilateral positive cores appears as a pejorative predictive factor. In our experience, important tumor volume seem to be a pejorative predictive factor for oncologic outcomes after PCA whereas treatment, PSA, Gleason/ISUP score, nadir PSA are not. LEVEL OF EVIDENCE: 4.
Value of Cardiac Biomarkers in the Early Diagnosis of Takotsubo Syndrome
Charlotte Dagrenat, Jean-Jacques von Hunolstein, Kensuke Matsushita, Lucie Thebaud, Stéphane Greciano, Nicolas Tuzin, Nicolas Meyer, Annie Trinh, Laurence Jesel, Patrick Ohlmann, Olivier Morel
Journal of Clinical Medicine, 2020, 9 (9), pp.2985. ⟨10.3390/jcm9092985⟩
Article dans une revueAbstractBACKGROUND: Bedside diagnosis between Takotsubo syndrome (TTS) and ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction remains challenging. We sought to determine a cardiac biomarker profile to enable their early distinction. METHODS: 1100 patients (TTS n = 314, STEMI n = 452, NSTEMI n = 334) were enrolled in two centers. Baseline clinical and biological characteristics were compared between groups. RESULTS: At admission, cut-off values of BNP (B-type natriuretic peptide)/TnI (Troponin I) ratio of 54 and 329 distinguished respectively STEMI from NSTEMI, and NSTEMI from TTS. Best differentiation was obtained by the use of BNP/TnI ratio at peak (cut-of values of 6 and 115 discriminated respectively STEMI from NSTEMI, and NSTEMI from TTS). We developed a score including five parameters (age, gender, history of psychiatric disorders, LVEF, and BNP/TnI ratio at admission) enabling good distinction between TTS and STEMI (77% specificity and 92% sensitivity, AUC 0.93). For the distinction between TTS and NSTEMI, a four variables score (gender, history of psychiatric disorders, LVEF, and BNP at admission) achieved a good diagnostic performance (89% sensitivity, 85% specificity, AUC 0.94). CONCLUSION: A distinctive cardiac biomarker profile enables at an early stage a differentiation between TTS and ACS. A four (NSTEMI) or five variables score (STEMI) permitted a better discrimination.
Delayed pulmonary embolism after COVID-19 pneumonia: a case report
Mohamad Kanso, Thomas Cardi, Halim Marzak, Alexandre Schatz, Loïc Faucher, Lélia Grunebaum, Olivier Morel, Laurence Jesel
European Heart Journal. Case Reports, 2020, 4 (6), pp.1 - 4. ⟨10.1093/ehjcr/ytaa449⟩
Article dans une revueAbstractBackground Since the onset of the COVID-19 pandemic, several cardiovascular manifestations have been described. Among them, venous thromboembolism (VTE) seems to be one of the most frequent, particularly in intensive care unit patients. We report two cases of COVID-19 patients developing acute pulmonary embolism (PE) after discharge from a first hospitalization for pneumonia of moderate severity. Case summary: Two patients with positive RT-PCR test were initially hospitalized for non-severe COVID-19. Both received standard thromboprophylaxis during the index hospitalization and had no strong predisposing risk factors for VTE. Few days after discharge, they were both readmitted for worsening dyspnoea due to PE. One patient was positive for lupus anticoagulant. Discussion: Worsening respiratory status in COVID-19 patients must encourage physicians to search for PE since SARS-CoV-2 infection may act as a precipitant risk factor for VTE. Patients may thus require more aggressive and longer thromboprophylaxis after COVID-19 related hospitalization.
Screening and topical decolonization of preoperative nasal Staphylococcus aureus carriers to reduce the incidence of postoperative infections after lung cancer surgery: a propensity matched study
Alex Fourdrain, Ilies Bouabdallah, Lucile Gust, Nadim Cassir, Geoffrey Brioude, Pierre-Emmanuel Falcoz, Marco Alifano, Jean-Philippe Le Rochais, Thomas D’annoville, Delphine Trousse, Anderson Loundou, Marc Leone, Laurent Papazian, Pascal Alexandre Thomas, Xavier Benoit D’journo
Interactive Cardiovascular and Thoracic Surgery, 2019, ⟨10.1093/icvts/ivz305⟩
Article dans une revueExercise‐evoked intramuscular neutrophil‐endothelial interactions support muscle performance and GLUT4 translocation: a mouse gnawing model study
Chayanit Chaweewannakorn, Mazvita R. Nyasha, Weijian Chen, Shigenori Sekiai, Masahiro Tsuchiya, Yoshihiro Hagiwara, Karim Bouzakri, Keiichi Sasaki, Makoto Kanzaki
The Journal of Physiology, 2019, 598 (1), pp.101-122. ⟨10.1113/JP278564⟩
Article dans une revueContribution of Capillary Refilling Time and Skin Mottling Score to Predict ICU Admission of Patients with Septic or haemorrhagic Shock Admitted to the Emergency Department: A TRCMARBSAU Study
Romain Jouffroy, Emmanuel Bloch-Laine, Maxime Maignan, Pierrick Le Borgne, Nicolas Marjanovic, Thomas Lafon, Scarlett Dehdar, Lea Thomas, Pierre Michelet, Benoit Vivien
Turkish Journal of Anaesthesiology and Reanimation, 2019, 47 (6), pp.492-495. ⟨10.5152/TJAR.2019.28459⟩
Article dans une revueAbstractObjective: In the emergency department (ED), the severity assessment of shock is a fundamental step prior to the admission in the intensive care unit (ICU). As biomarkers are time consuming to evaluate the severity of micro- and macro-circulation alteration, capillary refill time and skin mottling score are two simple, available clinical criteria validated to predict mortality in the ICU. The aim of the present study is to provide clinical evidence that capillary refill time and skin mottling score assessed in the ED also predict ICU admission of patients with septic or haemorrhagic shock. Methods: This trial is an observational, non-randomised controlled study. A total of 1500 patients admitted to the ED for septic or haemorrhagic shock will be enrolled into the study. The primary outcome is the admission to the ICU. Results: The study will not impact the treatments provided to each patient. Capillary refill time and skin mottling score will not be taken into account to decide patient's treatments and/or ICU admission. Patients will be followed up during their hospital stay to determine their precise destination after the ED (home, ICU or ward) and the 28- and 90-day mortality after hospital admission. Conclusion: The results from the present study will provide clinical evidence on the correlation between the ICU admission and the capillary refill time and the skin mottling score in septic or haemorrhagic shock admitted to the ED. The aim of the present study is to provide two simple, reliable and non-invasive tools for the triage and early orientation of these patients.
DNA-bound elastase of neutrophil extracellular traps degrades plasminogen, reduces plasmin formation, and decreases fibrinolysis: proof of concept in septic shock plasma
Dayana Barbosa da Cruz, Julie Helms, Lluvia Ramirez Aquino, Laure Stiel, Lucas Cougourdan, Cedric Broussard, Philippe Chafey, Madeleine Ries-Kautt, Ferhat Meziani, Florence Toti, Pascale Gaussem, Eduardo Angles-Cano
FASEB Journal, 2019, 33 (12), pp.14270-14280. ⟨10.1096/fj.201901363RRR⟩
Article dans une revueAbstractActivation of platelets and neutrophils in septic shock results in the formation of microvascular clots containing an intricate scaffold of fibrin with neutrophil extracellular traps (NETs) DNA. NETs contain multiple components that might impact endogenous fibrinolysis, resulting in failure to lyse clots in the microcirculation and residual systemic microthrombosis. We propose herein that the reservoir of human neutrophil elastase (HNE) on NETs may directly interfere with the fibrinolytic mechanism via a plasminogen proteolytic pathway. To investigate this mechanism, we constructed fibrin-NETs matrices by seeding and activating neutrophils onto a fibrin surface and monitored plasminogen activation or degradation. We demonstrate that the elastase activity of HNE-DNA complexes is protected from inhibition by plasma antiproteases and sustains its ability to degrade plasminogen. Using mass spectrometry proteomic analysis, we identified plasminogen fragments composed of kringle (K) domains (K1+2+3, k1+2+3+4) and the serine protease (SP) region (K5-SP). We further demonstrate that patients with septic shock with disseminated intravascular coagulation have circulating HNE-DNA complexes, HNE-derived plasminogen fragments, a low plasminogen concentration, and a reduced capacity to generate plasmin onto fibrin. In conclusion, we show that NETs bearing active HNE-DNA complexes reduce plasminogen into fragments, thus impairing fibrinolysis by decreasing the local plasminogen concentration, plasminogen binding to fibrin, and localized plasmin formation.-Barbosa da Cruz, D., Helms, J., Aquino, L. R., Stiel, L., Cougourdan, L., Broussard, C., Chafey, P., Ries-Kautt, M., Meziani, F., Toti, F., Gaussem, P., Angles-Cano, E. DNA-bound elastase of neutrophil extracellular traps degrades plasminogen, reduces plasmin formation, and decreases fibrinolysis: proof of concept in septic shock plasma.
Continuous professional development: elevating thoracic oncology education in Europe
Wouter H. Van Geffen, Torsten G. Blum, Stefano Aliberti, Kevin G. Blyth, Clementine Bostantzoglou, Amy Farr, Bogdan Grigoriu, Georgia Hardavella, Rudolf M. Huber, Nick Maskell, Gilbert Massard, Najib M. Rahman, Daiana Stolz, Jan Van Meerbeeck
Breathe, 2019, 15 (4), pp.279-285. ⟨10.1183/20734735.0296-2019⟩
Article dans une revueAbstractTweetable abstract @ERSpublications click to tweetThe @EuroRespSoc launches a new thoracic oncology continuous professional development programme http://bit.ly/31ShuTp
IL-36γ Is a Pivotal Inflammatory Player in Periodontitis-Associated Bone Loss
Alexandra Cloitre, Boris Halgand, Sophie Sourice, Jocelyne Caillon, Olivier Huck, Isaac Maximiliano Bugueno, Fareeha Batool, Jerome Guicheux, Valérie Geoffroy, Philippe Lesclous
Scientific Reports, 2019, 9, pp.19257. ⟨10.1038/s41598-019-55595-9⟩
Article dans une revueAbstractPeriodontitis is a prevalent chronic inflammatory disease due to the host response (IL-1β, IL-6, TNF-α and IL-17A) to oral bacteria such as Porphyromonas gingivalis. The newer members of the IL-1 family, IL-36s (IL-36α/IL-36β/IL-36γ/IL-36Ra/IL-38) are known to be involved in host defense against P. gingivalis in oral epithelial cells (OECs) and are considered as key inflammatory mediators in chronic diseases. The aim of this study was to investigate the potential role of IL-36s in periodontitis. We showed here that IL-36γ mRNA gingival expression is higher in periodontitis patients, whereas IL-36β and IL-36Ra mRNA expression are lower compared to healthy controls. Interestingly, the elevated IL-36γ expression in patients is positively correlated with the RANKL/OPG ratio, an index of bone resorption. In vitro, IL-36γ expression was induced through TLR2 activation in primary OECs infected with P. gingivalis but not in gingival fibroblasts, the most widespread cell type in gingival connective tissue. In OECs, recombinant IL-36γ enhanced the expression of inflammatory cytokines (IL-1β, IL-6, TNF-α and IL-36γ), of TLR2 and importantly, the RANKL/OPG ratio. These findings suggest that IL-36γ could be a pivotal inflammatory player in periodontitis by perpetuating gingival inflammation and its associated alveolar bone resorption and could be a relevant therapeutic target.
Let us not underestimate the long-term risk of SPLC after surgical resection of NSCLC
Taylor Leroy, Elisabeth Monnet, Stéphane Guerzider, Pascale Jacoulet, Bernardino de Bari, Pierre-Emmanuel Falcoz, Marie Gainet-Brun, Jean Lahourcade, Faraj Alfreijat, Hamadi Almotlak, Olivier Adotevi, Didier Pernet, Jean-Charles Polio, Maxime Desmarets, Anne-Sophie Woronoff, Virginie Westeel
Lung Cancer, 2019, 137, pp.23 - 30. ⟨10.1016/j.lungcan.2019.09.001⟩
Article dans une revueAbstractObjectives: Several studies have reported that patients operated on for non-small cell lung cancer (NSCLC) are at high risk of second primary lung cancer (SPLC). However, widely varying estimates of this risk have been reported, with very few studies taking into account that these patients are at particularly high competing risk of death, due to recurrence of the initial disease and to comorbidities. Risk factor evaluation over time has significant repercussions on the post-surgery surveillance strategy offered for NSCLC. This study primarily sought to measure the risk of SPLC in a long-term follow-up series, using statistical methods considering competing risks of death. Materials and methods: The cumulative SPLC risk was estimated using the cumulative incidence of patients with completely resected Stage I-III NSCLC diagnosed between 2002 and 2015 based on the Doubs and Belfort cancer registry (France). A proportional sub-distribution hazard model (sdRH) was used to investigate factors associated with SPLC risk in the presence of competing risks. Results: Among the 522 patients, adenocarcinoma and Stage I or II disease accounted for 52.3% and 75.7% of patients, respectively. Overall, 84 patients developed SPLC (16.1%). The cumulative risk of SPLC was 20.2% at 10 years post-surgery (95% confidence interval [CI]: 15.3-23.2), and 25.2% (CI: 19.4-31.3) at 14 years post-surgery. On multivariate analysis, the SPLC risk was significantly higher in patients with postoperative thoracic radiotherapy (sdRH 2.79; 95% CI: 1.41-5.52; p = 0.003). Conclusion: This study using appropriate statistical methods to consider competing risks showed that after complete NSCLC resection, the cumulative incidence function of SPLC was high, with patients receiving postoperative thoracic radiotherapy at higher risk. These data support the need for life-long follow-up of patients who undergo NSCLC surgery, with the objective of screening for SPLC.
P2Y12 Inhibition by Clopidogrel Increases Periprocedural Bleeds in Patients Undergoing Transcatheter Aortic Valve Replacement
Kensuke Matsushita, Benjamin Marchandot, Marion Kibler, Antonin Trimaille, Sebastien Hess, Lelia Grunebaum, Antje Reydel, Laurence Jesel, Patrick Ohlmann, Olivier Morel
Journal of the American College of Cardiology, 2019, 74 (21), pp.2707-2708. ⟨10.1016/j.jacc.2019.09.036⟩
Article dans une revueProkineticin Receptor-2 Orchestrates Cardiomyocyte-endothelial Cell Communications via Cardiomyocyte Secretoms
Canan Nebigil, Kyoji Urayama, Ferda Demir, Anais Audebrand, Marja Steenman
Circulation, 2019, 140 (Suppl. 1)
Article dans une revueAbstractIntroduction: Identification of factors that control cardiomyocyte (CM)-endothelial cell (ECs) communication is of great interest to understand the pathology of pressure overload (PO)-induced heart failure characterized by disruption of coordinated tissue growth and angiogenesis. Hypothesis: Since we found upregulation of angiogenic factor prokineticin receptor- 2 (PKR2) in the CMs of the mice model of chronic PO- mediated hypertrophic cardiomyopathy and human with ICH, we hypothesize that PKR2 may contribute to pathology of development of the CM hypertrophy and vascular degeneration Methods: Thus, we utilized TG-PKR2 mice to dissect alteration of gene profile and investigate and contribution of PKR2 in CMs-ECs interaction via secretoms in vitro cultures CM and ECs. Results: found an enrichment of TGF-β family-gene settings by microaaray analyses. Utilizing cytokine antibody array, we found that soluble endoglin (sENG) and Activin A are the secretoms of PKR2-overexpressing cardiomyocytes (PKR2-CMs). The conditioned medium of PKR2-CMs promotes EC-fenestration and disorganization via Activin A that was reversed by follistatin, an activin inhibitor. However, conditioned medium inhibits angiogenesis via sENG that was mitigated by TRC105, an antibody for endoglin. Prokineticin-2 in PKR2-CMs promotes hypertrophy described increased cell volume and hypertrophic markers (ANP, BNP, Gata4) that was blocked by MAPK5 inhibitors. Prokineticin-2 activates MAPK5 in PKR2-CMs via Gα12. Gα12 and MMP9 inhibitors but not MAPK5 blocked increased levels of activin A and sENG levels in PK2-CMs. Conclusions: Our finding drives a mechanism by which overexpression of PKR2 in cardiomyocytes via Gα12/MAPK5 pathway induces hypertrohic cardiomyopathy, whereas Gα12/MMP9 promotes release of cardiosecretoms from hypertrophic CMs that promote endothelial dysfunction.
Direct Visualization of Circulating Neutrophil Extracellular Traps Using Cell Fluorescence during Human Septic Shock-Induced Disseminated Intravascular Coagulation
Laure Stiel, Caroline Mayeur-Rousse, Julie Helms, Fehrat Meziani, Laurent Mauvieux
Blood, 2019, 134 (Supplement_1), pp.3583-3583. ⟨10.1182/blood-2019-124698⟩
Article dans une revueAbstractSeptic shock is the most severe form of infection, defined as a subset of sepsis in which circulatory, cellular and metabolic abnormalities are profound and responsible for multiple organ failure and a high mortality-rate. Septic shock is characterized by a broad coagulation activation that can lead to uncontrolled thrombin and fibrin generation, which may evolve to disseminated intravascular coagulation (DIC). DIC increases the risk of death, thus representing a therapeutic target of interest. However, the pathophysiological mechanisms of DIC are not fully understood. Polymorphonuclear neutrophils (PMNs) have recently been identified as potential players of the response to infection by releasing their content, including DNA, histones and granules enzymes. These structures, called neutrophils extracellular traps (NETs), form a large net-like structure in which pathogens get trapped. NETs capture invading pathogens, but also represent a pro-coagulant surface at the interface between immunity and thrombosis. During septic shock-induced DIC, neutrophil activation may result in excessive NET formation. In this study, we originally report the presence of circulating NETs in human blood during septic shock-induced DIC using a simple and robust method. Blood samples were obtained from healthy human volunteers (n=3), patients with septic shock without DIC (n=3) and with DIC (n=3). PMNs were immediately purified immediately after sampling using negative immune-magnetic sorting method. 5x104 purified PMNs were subsequently spotted on microscope slides using cytocentrifugation at 35g for 5 minutes, thus preserving cell integrity and morphology. Positive controls for NET formation were obtained using PMNs isolated from healthy volunteers that were stimulated in-vitro with 4 μM ionomycin. PMNs were stained with mouse anti-human FITC anti-myeloperoxidase (MPO) antibody and the blue-fluorescent DAPI nucleic acid stain. NETs were identified as elongated extracellular DAPI stained DNA fibers associated to MPO detected by immunofluorescence microscopy. The degree of NETs formation was blindly quantified into 5 categories according to the proportion of neutrophils forming NETs per microscopic field: absence (0% of neutrophils forming NETs), scarce (1-25%), moderate (26% to 50%), high (50% to 75%) or very high degree of NETS formation (76% to 100%). PMNs from healthy donors stimulated by ionomycin released NETs, evidenced as double-stained DAPI-positive chromatin structures decorated with MPO in the extracellular space using fluorescence microscopy. NET structures similar to those observed after ionomycin stimulation were unambiguously visualized in PMNs from septic shock patients with DIC, but neither in PMNs from septic shock patients without DIC, nor in unstimulated PMNs from healthy donors. DIC patients were stratified into "high" or "very high" degree of NETs formation groups (>75 % of PMNs displaying DNA release), not different from ionomycin-stimulated PMNs (50 to 75%). Conversely, PMNs from patients devoid of DIC as well as unstimulated normal PMNs from healthy volunteers were stratified into "scarce" or "absence" of PMNs forming NET categories. Blind review of May-Giemsa-Grunwald (MGG) stained slides showed the correlation of the detection of NETs with nuclear decondensation and vacuolation of the cytoplasm of PMNs, features that are associated with neutrophil activation. Accordingly, neutrophils' side-fluorescence (NEUT-SFL), a Sysmex™ CBC analyzers parameter previously associated to NETosis (Stiel et al., 2016, Delabranche et al., 2017) was increased during septic shock induced DIC as well as following in-vitro ionomycin stimulation of normal PMNs. In this study, we showed for the first time direct evidence of circulating NETs in peripheral blood of patients with septic shock-induced DIC using immunofluorescence. These NETs are undistinguishable from NETs features observed following in-vitro ionomycin stimulation of normal PMNs. NETs images were furthermore associated with modifications of PMN morphology that could be detected using MGG staining. This observation may be of great interest in order to stratify patients eligible for future treatment protocols with molecules targeting NETs. Figure Disclosures Meziani: STAGO: Research Funding.
In-situ forming implants for the treatment of periodontal diseases: Simultaneous controlled release of an antiseptic and an anti-inflammatory drug
M. Lizambard, T. Menu, M. Fossart, C. Bassand, K. Agossa, O. Huck, C. Neut, F. Siepmann
International Journal of Pharmaceutics, 2019, 572, pp.118833. ⟨10.1016/j.ijpharm.2019.118833⟩
Article dans une revueAbstractDifferent types of in-situ forming implants based on poly(lactic-co-glycolic acid) (PLGA) for the controlled dual release of an antiseptic drug (chlorhexidine) and an anti-inflammatory drug (ibuprofen) were prepared and thoroughly characterized in vitro. N-methyl-pyrrolidone (NMP) was used as water-miscible solvent, acetyltributyl citrate (ATBC) as plasticizer and hydroxypropyl methylcellulose (HPMC) was added to enhance the implants’ stickiness/bioadhesion upon formation within the periodontal pocket. Different drug forms exhibiting substantially different solubilities were used: chlorhexidine dihydrochloride and digluconate as well as ibuprofen free acid and lysinate. The initial drug loadings were varied from 1.5 to 16.1%. In vitro drug release, dynamic changes in the pH of the surrounding bulk fluid and in the systems’ wet mass as well as polymer degradation were monitored. Importantly, the release of both drugs, chlorhexidine and ibuprofen, could effectively be controlled simultaneously during several weeks. Interestingly, the tremendous differences in the drug forms’ solubilities (e.g., factor >5000) did not translate into major differences in the resulting release kinetics. In the case of ibuprofen, this can likely (at least in part) be attributed to significant drug-polymer interactions (ibuprofen acts as a plasticizer for PLGA). In the case of chlorhexidine, the release of the much less soluble dihydrochloride was even faster compared to the more soluble digluconate (when combined with ibuprofen free acid). In the case of ibuprofen, at higher initial drug loadings also limited solubility effects within the implants seem to play a role, in contrast to chlorhexidine. In the latter case, instead, increased system porosity effects likely dominate at higher drug loadings.
Impact of donor, recipient and matching on survival after high emergency lung transplantation in France
Arnaud Roussel, Edouard Sage, Gilbert Massard, Pascal-Alexandre Thomas, Yves Castier, Elie Fadel, Françoise Le Pimpec-Barthes, Jean-Michel Maury, Jacques Jougon, Philippe Lacoste, Johanna Claustre, Marcel Dahan, Augustin Pirvu, Adrien Tissot, Matthieu Thumerel, Gabrielle Drevet, Ciprian Pricopi, Jérôme Le Pavec, Hervé Mal, Xavier-Benoit d'Journo, Romain Kessler, Antoine Roux, Richard Dorent, Gabriel Thabut, Pierre Mordant
European Respiratory Journal, 2019, 54 (5), pp.1900096. ⟨10.1183/13993003.00096-2019⟩
Article dans une revueAbstractIntroduction Since July 2007, the French high emergency lung transplantation (HELT) allocation procedure prioritises available lung grafts to waiting patients with imminent risk of death. The relative impacts of donor, recipient and matching on the outcome following HELT remain unknown. We aimed at deciphering the relative impacts of donor, recipient and matching on the outcome following HELT in an exhaustive administrative database. Methods All lung transplantations performed in France were prospectively registered in an administrative database. We retrospectively reviewed the procedures performed between July 2007 and December 2015, and analysed the impact of donor, recipient and matching on overall survival after the HELT procedure by fitting marginal Cox models. Results During the study period, 2335 patients underwent lung transplantation in 11 French centres. After exclusion of patients with chronic obstructive pulmonary disease/emphysema, 1544 patients were included: 503 HELT and 1041 standard lung transplantation allocations. HELT was associated with a hazard ratio for death of 1.41 (95% CI 1.22–1.64; p<0.0001) in univariate analysis, decreasing to 1.32 (95% CI 1.10–1.60) after inclusion of recipient characteristics in a multivariate model. A donor score computed to predict long-term survival was significantly different between the HELT and standard lung transplantation groups (p=0.014). However, the addition of donor characteristics to recipient characteristics in the multivariate model did not change the hazard ratio associated with HELT. Conclusions This exhaustive French national study suggests that HELT is associated with an adverse outcome compared with regular allocation. This adverse outcome is mainly related to the severity status of the recipients rather than donor or matching characteristics.
Risk factors associated with long-term outcomes after active and supporting periodontal treatments: impact of various compliance definitions on tooth loss
Catherine Petit, Sylvie Schmeltz, Alexandre Burgy, Henri Tenenbaum, Olivier Huck, Jean-Luc Davideau
Clinical Oral Investigations, 2019, 23 (11), pp.4123-4131. ⟨10.1007/s00784-019-02851-x⟩
Article dans une revueAdolescent tooth brushing frequency evolution (2006-2014), risk factors and causality hypothesis
Gabriel Fernandez de Grado, Damien Offner, Emmanuelle Godeau, Cathy Nabet, Anne-Marie Musset
European Journal of Public Health, 2019, 29 (Supplement_4), 1 page. ⟨10.1093/eurpub/ckz187.042⟩
Article dans une revueAbstractObjectives: To analyze the evolution of tooth brushing frequency (TBF) as well as the impact of socio-economic status and health behaviors between 2006, 2010 and 2014 among adolescents from the French Health Behavior in School-aged Children (HBSC) cross-sectional studies. Methods: We included 18727 adolescents aged 11, 13 or 15 years old (y/o). The relationship between TBF and variables such as eating habits, health and socio-economic status markers as well as their evolution over the 3 studies were analyzed using logistic regression. We used directed acyclic graphs (DAGs) to represent the potential chain of causality between TBF, its associated factors, as well as latent variables such as the risk for oral diseases. Results: Proportion of adolescents brushing twice a day increased from 68.8% in 2006 to 70.8% in 2010 and 78.8% in 2014 (p < 0.0001). Notable predictors (p < 0.0001) were being a girl (adjusted Odd Ratio = 1.5) and even more an older girl (aOR 1.5 for 15y/o vs 11 y/o girls), having breakfast and fruits daily (aOR 1.4 and aOR 1.6), excellent perceived health (aOR 1.2), obesity or overweight (aOR 0.6), being bullied at school (aOR 0.8) and perceived family wealth (aOR 1.4 for High vs Low). Impacts of these predictors were stable over the 3 studies. DAGs highlighted the fact that a low TBF and its associated risk factors described a high-risk population for poor oral and global health. Variables at the origin of those risks seemed to be age, sex, familial environment, socio-economic environment and education. Conclusions: TBF among French adolescents improved from 2006 to 2014. This may be linked with global prevention programs developed during this time period. These programs should be associated with more specific ones targeted towards and adapted to disadvantaged populations to diminish inequalities. The use of DAGs is a powerful tool to identify the origin of those inequalities as well as the right factors to target in order to achieve efficient prevention.
Elements of morphology: Standard terminology for the teeth and classifying genetic dental disorders
Muriel Dure‐molla, Benjamin Philippe Fournier, Maria Cristina Manzanares, Ana Carolina Acevedo, Raoul C. Hennekam, Lisa Friedlander, Marie‐laure Boy‐lefèvre, Stephane Kerner, Steve Toupenay, Pascal Garrec, Brigite Vi‐fane, Rufino Felizardo, Marie‐violaine Berteretche, Laurence Jordan, François Ferré, François Clauss, Sophie Jung, Myriam Chalendar, Sebastien Troester, Marzena Kawczynski, Jessica Chaloyard, Marie Cecile Maniere, Ariane Berdal, Agnès Bloch
American Journal of Medical Genetics Part A, 2019, 179 (10), pp.1913-1981. ⟨10.1002/ajmg.a.61316⟩
Article dans une revuePrevalence and risk factors of root resorption of adjacent teeth in maxillary canine impaction, among untreated children and adolescents
Frédéric Rafflenbeul, Catherine-Isabelle Gros, François Lefebvre, Sophie Bahi-Gross, Raphaëlle Maizeray, Yves Bolender
European Journal of Orthodontics, 2019, 41 (5), pp.447-453. ⟨10.1093/ejo/cjy078⟩
Article dans une revueAbstractSummary Objectives The aim of this retrospective study was to assess in maxillary canine impaction cases both the prevalence of root resorption of adjacent teeth among untreated children and adolescents, and its associated risk factors. Subjects and methods Sixty subjects (mean age 12.2 years; SD 1.9; range 8–17 years) with 83 displaced maxillary canines and without any past or ongoing orthodontic treatment were included in this study. The presence of root resorption was evaluated on images from a single cone beam computed tomography (CBCT) unit. Potential risk factors were measured on the CBCT images and on panoramic reconstructions of the 3D data sets. The sample was characterized by descriptive statistics and multiple logistic regressions were performed to predict root resorption. Results Root resorption of at least one adjacent tooth was detected in 67.5 per cent of the affected quadrants. It was found that 55.7 per cent of the lateral incisors, 8.4 per cent of the central incisors, and 19.5 per cent of first premolars were resorbed. Of the detected resorptions, 71.7 per cent were considered slight, 14.9 per cent moderate, and 13.4 per cent severe. Contact between the displaced canine(s) and the adjacent teeth roots was the only identified statistically significant risk factor, all teeth being considered (odds ratio [OR] = 18.7, 95% confidence interval: 2.26–756, P < 0.01). An enlarged canine dental follicle, a peg upper lateral, or an upper lateral agenesis were not significantly associated with root resorption of adjacent teeth, nor were age nor gender. Conclusions Root resorption of adjacent teeth was detected in more than two-thirds of a sample of sixty untreated children and adolescents.
European survey on criteria of aesthetics for periodontal evaluation: The ESCAPE study
Fareeha Batool, Céline Stutz, Nicolas Anton, Andrey Klymchenko, Thierry Vandamme, Nadia Benkirane-Jessel, Olivier Huck, Sarah Le Roch, Frédéric Rouche, Fabien Valet, Philippe Bouchard, I Abrahamsson, Z Artzi, T Asbi, M.G Balta, S Bizzarro, J Buti, L Chaushu, M Danser, B de Carvalho, J Garabetyan, M Goldstein, H Gursoy, L Harmouche, P Harrison, D Herrera, J Horwitz, J.‐c Imber, K Karlsson, S Kerner, A Kozlovsky, B Kuru, G Lecloux, F Lambert, J Lim, E Madeley, Y Mayer, B Molemans, F Mora, F Noguerol, G Nuzzo, Catherine Petit, I Polyzois, K Rabah, R Rotundo, G.E Salvi, I Sanz‐sánchez, A Sculean, L Shapira, A Temmerman, W Teughels, E Yarimoglu
Journal of Clinical Periodontology, 2019, 46 (11), pp.1116-1123. ⟨10.1111/jcpe.13182⟩
Article dans une revueDichloroacetate restores colorectal cancer chemosensitivity through the p53/miR-149-3p/PDK2-mediated glucose metabolic pathway
Yu Liang, Lidan Hou, Linjing Li, Lei Li, Liming Zhu, Yu Wang, Xin Huang, Yichao Hou, Danxi Zhu, Huimin Zou, Yan Gu, Xiaoling Weng, Yingying Wang, Yue Li, Tianqi Wu, Mengfei Yao, Isabelle Gross, Christian Gaiddon, Meng Luo, Jianhua Wang, Xiangjun Meng
Oncogene, 2019, Epub ahead of print]. ⟨10.1038/s41388-019-1035-8⟩
Article dans une revueAbstractThe development of chemoresistance remains a major challenge that accounts for colorectal cancer (CRC) lethality. Dichloroacetate (DCA) was originally used as a metabolic regulator in the treatment of metabolic diseases; here, DCA was assayed to identify the mechanisms underlying the chemoresistance of CRC. We found that DCA markedly enhanced chemosensitivity of CRC cells to fluorouracil (5-FU), and reduced the colony formation due to high levels of apoptosis. Using the microarray assay, we noted that miR-149-3p was involved in the chemoresistance of CRC, which was modulated by wild-type p53 after DCA treatment. In addition, PDK2 was identified as a direct target of miR-149-3p. Mechanistic analyses showed that overexpression of miR-149-3p enhanced 5-FU-induced apoptosis and reduced glucose metabolism, similar to the effects of PDK2 knockdown. In addition, overexpression of PDK2 partially reversed the inhibitory effect of miR-149-3p on glucose metabolism. Finally, both DCA treatment and miR-149-3p overexpression in 5-FU-resistant CRC cells were found to markedly sensitize the chemotherapeutic effect of 5-FU in vivo, and this effect was also validated in a small retrospective cohort of CRC patients. Taken together, we determined that the p53/miR-149-3p/PDK2 signaling pathway can potentially be targeted with DCA treatment to overcome chemoresistant CRC.
In-situ forming implants loaded with chlorhexidine and ibuprofen for periodontal treatment: Proof of concept study in vivo
Fareeha Batool, Kevimy Agossa, Martin Lizambard, Catherine Petit, Isaac Maximiliano Bugueno, Elisabeth Delcourt-Debruyne, Nadia Benkirane-Jessel, Henri Tenenbaum, Juergen Siepmann, Florence Siepmann, Olivier Huck
International Journal of Pharmaceutics, 2019, 569, pp.118564 -. ⟨10.1016/j.ijpharm.2019.118564⟩
Article dans une revueAbstractControl of infection and inflammation is crucial for the success of periodontal treatment. In this study, in-situ forming implants (ISFI) loaded with chlorhexidine dihydrochloride (CHX) and ibuprofen (IBU) were developed and tested to optimize periodontal treatment outcomes. Release profiles were promising. Exposure to 1.5% and 5.3% CHX-IBU loaded ISFI's release media decreased significantly the P. gingivalis growth up to 20-fold and 35-fold, respectively, after 48 h (p < 0.05). The metabolic activity assay of gingival epithelial cells (EC) demonstrated 1.5% CHX-IBU-loaded ISFI to be non-toxic, therefore, it was selected for further experimentation. Furthermore, significant down-regulation of TNF-α release (34% at 6 h and 43% at 24 h, p < 0.05) in P. gingivalis lipopolysaccharide (Pg-LPS) stimulated EC exposed to 1.5% CHX-IBU ISFI release medium was demonstrated by ELISA. In vivo, 1.5% CHX-IBU ISFI was injected into the periodontal pocket in an experimental periodontitis mouse model and the reduction in inflammation and improvement in periodontal wound healing was evaluated through inflammatory cell scoring and histomorphometry at 7- and 15-days post-treatment. The results indicate that CHX-IBU loaded ISFI could be efficient as adjuvant to periodontal therapy for the control of infection and inflammation. Moreover, other (e.g., pro-regenerative) drugs could be incorporated into ISFI to further improve periodontal treatment outcomes.
Thrombin Induces Angiotensin II-Mediated Senescence in Atrial Endothelial Cells: Impact on Pro-Remodeling Patterns
Hira Hasan, Sin-Hee Park, Cyril Auger, Eugenia Belcastro, Kensuke Matsushita, Benjamin Marchandot, Hyun-Ho Lee, Abdul Wahid Qureshi, Gilles Kauffenstein, Patrick Ohlmann, Valerie Schini-Kerth, Laurence Jesel, Olivier Morel
Journal of Clinical Medicine, 2019, 8 (10), pp.1570. ⟨10.3390/jcm8101570⟩
Article dans une revueAbstractBackground: Besides its well-known functions in hemostasis, thrombin plays a role in various non-hemostatic biological and pathophysiologic processes. We examined the potential of thrombin to promote premature atrial endothelial cells (ECs) senescence. Methods and Results: Primary ECs were isolated from porcine atrial tissue. Endothelial senescence was assessed by measuring beta-galactosidase (SA-β-gal) activity using flow cytometry, oxidative stress using the redox-sensitive probe dihydroethidium, protein level by Western blot, and matrix metalloproteinases (MMPs) activity using zymography. Atrial endothelial senescence was induced by thrombin at clinically relevant concentrations. Thrombin induced the up-regulation of p53, a key regulator in cellular senescence and of p21 and p16, two cyclin-dependent kinase inhibitors. Nicotinamide adenine dinucleotide phosphate NADPH oxidase, cyclooxygenases and the mitochondrial respiration complex contributed to oxidative stress and senescence. Enhanced expression levels of vascular cell adhesion molecule (VCAM)-1, tissue factor, transforming growth factor (TGF)-β and MMP-2 and 9 characterized the senescence-associated secretory phenotype of atrial ECs. In addition, the pro-senescence endothelial response to thrombin was associated with an overexpression of both angiotensin converting enzyme and AT1 receptors and was inhibited by perindoprilat and losartan. Conclusions: Thrombin promotes premature ageing and senescence of atrial ECs and may pave the way to deleterious remodeling of atrial tissue by a local up-regulation of the angiotensin system and by promoting pro-inflammatory, pro-thrombotic, pro-fibrotic and pro-remodeling responses. Hence, targeting thrombin and/or angiotensin systems may efficiently prevent atrial endothelial senescence.
Épidémiologie et particularité du diabète à l’adolescence
L. Kessler, M. Mansilla
Médecine des Maladies Métaboliques, 2019, 13, pp.400 - 403. ⟨10.1016/S1957-2557(19)30111-7⟩
Article dans une revueAbstractThe management of diabetic adolescents is a situation to which the practitioner will be more and more confronted. Epidemiological data indicate an increase in the number of children and adolescents with diabetes, with a shift in the age of onset of diabetes to children under 10 years of age. Despite the development of new technologies and therapeutic education, the period of adolescence is still a period of glycemic imbalance that has deteriorated in recent years affecting a larger number of adolescents with diabetes. The management of adolescents with diabetes is a particularly difficult metabolic, psychological, societal, and institutional situation. There is currently no structure dedicated to the care of the adolescent with diabetes. In this context, the recommendations advocate the establishment of transition periods allowing the teams of pediatric and adult diabetology to walk the patient to adulthood accompanied by the best to avoid breaks in care. The Teen Homes also represent support that can be provided to the care of the young adolescent with diabetes during this particularly difficult period.
Impact of Tacrolimus in the epithelial-mesenchymal transition in chronic lung allograft dysfonction
Margaux Gracyasz, Kévin Valliere, Ali El Habhab, Benjamin Renaud-Picard, Fatiha El-Ghazouani, Laurence Kessler, Florence Toti, Romain Kessler
European Respiratory Journal, 2019, 54, ⟨10.1183/13993003.congress-2019.PA2358⟩
Article dans une revueLeft ventricular mechanics in the acute phase of Takotsubo cardiomyopathy: distinctive ballooning patterns translate into different diastolic properties
Nathan Messas, Antonin Trimaille, Benjamin Marchandot, Kensuke Matsushita, Marion Kibler, Sébastien Hess, Guillaume Marquis-Gravel, E. Marc Jolicoeur, Laurence Jesel, Patrick Ohlmann, Olivier Morel
Heart and Vessels, 2019, 35 (4), pp.537-543. ⟨10.1007/s00380-019-01510-1⟩
Article dans une revueAbstractAlthough apical and midventricular Takotsubo cardiomyopathies (TTCs) share common triggers and pathophysiological features, little is known about the potential differences in left ventricular (LV) mechanistic properties between these TTC phenotypes. We sought to investigate whether LV systolic and/or diastolic function, as assessed invasively by left heart catheterization (LHC), differ according to ballooning patterns in the acute phase of TTC. One hundred and fourteen TTC patients were retrospectively identified between January 2009 and December 2015 at the University Hospital of Strasbourg, France. A comprehensive list of LV quantitative parameters was derived from LHC analysis for each patient. We examined 2 groups of patients according to ballooning patterns in the acute phase of TTC: patients with apical ballooning ("Apical group"; n = 76) and those with midventricular ballooning ("Midventricular group"; n = 38). LV minimal diastolic pressure (8.72 ± 6.72 vs. 5.02 ± 6.08 mmHg; p = 0.004), LV end diastolic pressure (23.11 ± 8.32 vs. 18.84 ± 8.06 mmHg; p = 0.01), and LV diastolic stiffness (LV stiffness 1: 0.29 ± 0.23 vs. 18.84 ± 8.06 mmHg/mL; p = 0.04-LV stiffness 2: 0.16 ± 0.08 vs. 0.12 ± 0.05 mmHg/mL; p = 0.005) were significantly higher in patients with apical TTC than in the midventricular group. Concomitantly, these findings were associated with significantly higher BNP levels in the apical group (923.91 ± 1164.53 vs. 418.71 ± 557.75 pg/mL; p = 0.004) than in the midventricular group. In the acute phase of stress cardiomyopathy, the classic apical form of TTC is associated with poorer diastolic function compared to the midventricular ballooning variant, as assessed through direct invasive hemodynamic measurements using LHC.
Urapidil, but not dihydropyridine calcium channel inhibitors, preserves the hypoxic pulmonary vasoconstriction: an experimental study in pig arteries
Claire Bopp, Cyril Auger, Alexandre Mebazaa, Girish P Joshi, Valérie Schini‐kerth, Pierre Diemunsch
Fundamental & Clinical Pharmacology, 2019, 33 (5), pp.527-534. ⟨10.1111/fcp.12457⟩
Article dans une revueEasy and Fast Application to Assess the Cost-Effectiveness of Stereotactic Body Radiotherapy (SBRT) Compare to Lobectomy in Early Stage Non Small Cells Lung Cancer (NSCLC).
A. Paix, Pierre-Emmanuel Falcoz, P. Lévy, Georges Noel
International Journal of Radiation Oncology, Biology, Physics, 2019, 105 (1), pp.E441. ⟨10.1016/j.ijrobp.2019.06.1473⟩
Article dans une revueFatal cardiac and pulmonary metastases from anaplastic thyroid carcinoma
Nawfel Ben-Hamouda, Max Guillot, Marie-Line Harlay, Pascal Bilbault, Agnes Neuville, Marie-Noelle Roedlish, Francis Schneider, Vincent Castelain
Minerva Pneumologica, 2019, 58 (3), ⟨10.23736/S0026-4954.19.01852-2⟩
Article dans une revueA modified method for a customized harvest of fibula free flap in maxillofacial reconstruction
Charles Druelle, Matthias Schlund, Jean-Christophe Lutz, Marion Constant, Gwénaël Raoul, Romain Nicot
Journal of Stomatology, Oral and Maxillofacial Surgery, 2019, Journal of Stomatology, Oral and Maxillofacial Surgery, 121, pp.74-76. ⟨10.1016/j.jormas.2019.08.002⟩
Article dans une revueAbstractMandibular reconstruction using computer-aided design/computer-aided manufacturing cutting guides is currently a common procedure. However, inaccurate positioning of the cutting guide onto the fibular bone may result in osteosynthesis difficulties or imprecision in the reconstruction. A novel way to improve the stability of the cutting guides may be to add pillars in order for them to be suspended from the fibula, avoiding soft tissues interactions. We present the case of a 39-year-old male who needed mandibular reconstruction after a self-inflicted ballistic injury. We designed a customized cutting guide which included a set of 8 pillars allowing a suspension of the cutting guide 8 millimeters above the bone level. The pillars were perpendicular to one another, and allowed the operator to screw the cutting guide to the bone. The orthogonal position of the pillars enabled real stability during the osteotomies. In the operator experience, the length of the pillars was too important, and led to incomplete osteotomies, and the whole device was too bulky. However, with adaptations in the size of the pillars and the size of the whole device, this solution could be useful in cutting guide design to avoid impairments due to the soft tissues surrounding the fibula.
Assessment of plasma microvesicles to monitor pancreatic islet graft dysfunction: Beta cell‐ and leukocyte‐derived microvesicles as specific features in a pilot longitudinal study
Lamia Amoura, Fatiha El‐ghazouani, Mohamad Kassem, Ali El Habhab, Guillaume Kreutter, Salah Sahraoui, Domenico Bosco, Nadia Jessel, Thierry Berney, Pierre‐yves Benhamou, Florence Toti, Laurence Kessler
American Journal of Transplantation, 2019, ⟨10.1111/ajt.15534⟩
Article dans une revueDoes Transcatheter Aortic Valve Replacement Modulate the Kinetic of Superoxide Anion Generation?
Benjamin Marchandot, Marion Kibler, Anne-Laure Charles, Annie Trinh, Helene Petit Eisenmann, Floriane Zeyons, Jean Jacques von Hunolstein, Antje Reydel, Kentsuke Matsushita, Michel Kindo, Tam Hoang Minh, Pierre Leddet, Fabien de Poli, Nathan Messas, Laurence Jesel, Patrick Ohlmann, Bernard Geny, Olivier Morel
Antioxidants and Redox Signaling, 2019, 31 (5), pp.420-426. ⟨10.1089/ars.2018.7689⟩
Article dans une revueAbstractReactive oxygen species (ROS) are central bioenergetic markers linked to aortic stenosis (AS) development and severity. We sought to evaluate the time course and impact of ROS assessed by plasmatic superoxide anion (SA) among patients undergoing transcatheter aortic valve replacement (TAVR). Among 106 patients, SA significantly decreased after TAVR. Dropped values were measured 10 min after TAVR (0.590 ± 0.181 vs. 0.648 ± 0.193; p < 0.001) and persistent at 3 days (0.611 ± 0.0.228 vs. 0.646 ± 0.199; p = 0.033) and 30 days follow-up (0.572 ± 0.207 vs. 0.639 ± 0.199; p = 0.005). Increased baseline SA (>75 percentile) was continuously associated with higher postprocedural SA values 10 min after valve expansion (p < 0.001), at 3 days (p < 0.001) and 30 days (p < 0.001). Higher baseline SA was linked to higher inflammatory response assessed by higher C-reactive protein values at day 1 and day 3. The composite endpoint of all-cause mortality and/or stroke and/or pacemaker implantation and/or significant paravalvular aortic regurgitation ≥mild at 30 days did not differ significantly according to SA baseline values (p = 0.055). This is the first report identifying a decrease in oxidative stress level after TAVR. Our observation leads to the hypothesis that oxidative stress biomarkers may survive the journey from bench to bedside in AS and TAVR and become new biomarkers with both diagnostic and prognostic values. Antioxid. Redox Signal. 31, 420-426.
Impact of Setting up an "Endocarditis Team" on the Management of Infective Endocarditis
Yvon Ruch, Jean-Philippe Mazzucotelli, François Lefebvre, Aurélie Martin, Nicolas Lefebvre, Nawal Douiri, Philippe Riegel, Tam Hoang Minh, Hélène Petit-Eisenmann, Yves Hansmann, Xavier Argemi
Open Forum Infectious Diseases, 2019, 6 (9), ⟨10.1093/ofid/ofz308⟩
Article dans une revueAbstractBackground: Infective endocarditis (IE) remains a severe disease with a high mortality rate. Therefore, guidelines encourage the setup of a multidisciplinary group in reference centers. The present study evaluated the impact of this "Endocarditis Team" (ET). Methods: We conducted a monocentric observational study at Strasbourg University Hospital, Strasbourg, France, between 2012 and 2017. The primary end point was in-hospital mortality. Secondary end points were 6-month and 1-year mortality, surgery rate, time to surgical procedure, duration of effective antibiotic therapy, length of in-hospital stay, and sequelae. We also assessed predictors of in-hospital mortality. Results: We analyzed 391 episodes of IE. In the post-ET period, there was a nonsignificant decrease in in-hospital mortality (20.3% vs 14.7%, respectively; P = .27) and sequelae, along with a significant reduction in time to surgery (16.4 vs 10.3 days, respectively; P = .049), duration of antibiotic therapy (55.2 vs 47.2 days, respectively; P < .001), and length of in-hospital stay (40.6 vs 31.9 days, respectively; P < .01). In a multivariate analysis, the post-ET period was positively associated with survival (odds ratio, 0.45; 95% confidence interval, 0.20-0.96; P = .048). Conclusions: This multidisciplinary approach exerted a positive impact on the management of IE and should be considered in all hospitals managing IE.
Trisodium citrate 4% versus heparin as a catheter lock for non-tunneled hemodialysis catheters in critically ill patients: a multicenter, randomized clinical trial
Jean-Pierre Quenot, Julie Helms, Abderrahmane Bourredjem, Auguste Dargent, Ferhat Meziani, Julio Badie, Gilles Blasco, Gaël Piton, Gilles Capellier, Chaouki Mezher, Jean-Michel Rebibou, Abdelouaid Nadji, Thomas Crepin, Saber Davide Barbar, Camille Fleck, Amélie Cransac, Mathieu Boulin, Christine Binquet, Agnès Soudry-Faure, Rémi Bruyere
Annals of Intensive Care, 2019, 9, ⟨10.1186/s13613-019-0553-4⟩
Article dans une revueAbstractBackgroundNon-tunneled hemodialysis catheters are currently used for critically ill patients with acute kidney injury requiring extracorporeal renal replacement therapy. Strategies to prevent catheter dysfunction and infection with catheter locks remain controversial.MethodsIn a multicenter, randomized, controlled, double-blind trial, we compared two strategies for catheter locking of non-tunneled hemodialysis catheters, namely trisodium citrate at 4% (intervention group) versus unfractionated heparin (control group), in patients aged 18years or older admitted to the intensive care unit and in whom a first non-tunneled hemodialysis catheter was to be inserted by the jugular or femoral vein. The primary endpoint was length of event-free survival of the first non-tunneled hemodialysis catheter. Secondary endpoints were: rate of fibrinolysis, incidence of catheter dysfunction and incidence of catheter-related bloodstream infection (CRBSI), all per 1000 catheter-days; number of hemorrhagic events requiring transfusion, length of stay in intensive care and in hospital; 28-day mortality.ResultsOverall, 396 randomized patients completed the trial: 199 in the citrate group and 197 in the heparin group. There was no significant difference in baseline characteristics between groups. The duration of event-free survival of the first non-tunneled hemodialysis catheter was not significantly different between groups: 7days (IQR 3-10) in the citrate group and 5days (IQR 3-11) in the heparin group (p=0.51). Rates of catheter thrombosis, CRBSI, and adverse events were not statistically different between groups.ConclusionsIn critically ill patients, there was no significant difference in the duration of event-free survival of the first non-tunneled hemodialysis catheter between trisodium citrate 4% and heparin as a locking solution. Catheter thrombosis, catheter-related infection, and adverse events were not statistically different between the two groups.Trial registration Registered with Clinicaltrials.gov under the number NCT01962116. Registered 14 October 2013.
Abstract 1930: High specific characterization of patient-derived tumor xenograft models for accelerating drug development in muscle-invasive bladder cancers
Hervé Lang, Claire Beraud, Myriam Lassalle, Véronique Lindner, Michel Soulié, Xavier Gamé, Pascal Rischmann, Yves Allory, François Radvanyi, Isabelle Bernard-Pierrot, Philippe Lluel, Thierry Massfelder
Cancer Research, 2019, 79 (13_Supplement), pp.1930-1930. ⟨10.1158/1538-7445.AM2019-1930⟩
Article dans une revueAbstractAbstract Muscle-invasive bladder cancers (MIBCs) constitute a heterogeneous group of tumors with a poor outcome. Recently, MIBC molecular subtyping efforts from an international consortium led to the identification of six subtypes to improve prediction of clinical outcomes and treatment responses. These subtypes can be schematically divided into luminal (differentiated) and non-luminal subtypes. FGFR3 alterations (mutations and translocations) are among the most frequent genetic events in bladder carcinoma and are found mainly in one subtype, the luminal papillary that respond poorly to chemo- and immuno-therapy. Here we describe the development and characterization of patient-derived primary MIBC xenografts (PDX) belonging to these different subtypes. Bladder primary tumors and normal corresponding tissues were directly obtained from patients at surgery. Tumor fragments were subcutaneously xenografted into immune-compromised mice. After the first growth in mice, they were serially passaged. PDXs tumors at multiple passages and patients’ primary tumors from which they are derived were processed for analyses including growth characteristics, histopathology (H&E, CK5/6, FOXA1 and GATA3), gene expression (Affymetrix U133 plus 2.0 microarray), genetic stability (STR profiling). Specifically, hotspot oncogenic mutations including FGFR3, PIK3CA, HRAS, KRAS, NRAS, and PPARG were also explored. Additionally, pharmacological responses to standards of care and targeted therapies were characterized. Since 10 years, we have collected 152 MIBC tumors at all stages and grades. Up to now, 32 PDX models have been successfully established (> P3 in mice), i.e. 21.1 % success rate. This take rate seems not to be correlated to any classical tumor characteristics. Importantly, transcriptomic analysis allowed us to identify PDX models belonging to the different molecular subtypes including the basal-like and the luminal papillary subtypes (which include several PDX with FGFR3 mutations). All histological, genetic and molecular features validated the stability of the PDX models compared to the parental tumors. Histological analyses were correlated with the molecular classification. These models reproduced the response to cisplatin-based therapies observed in the clinic and FGFR3-mutated PDX models were shown to be highly responder to FGFR3 inhibitors. We have developed highly relevant preclinical models for MIBCs corresponding to the main subtypes which have been described. They represent essential tools for developing adapted and efficient therapies against this deadly disease. Citation Format: Hervé Lang, Claire Beraud, Myriam Lassalle, Véronique Lindner, Michel Soulié, Xavier Gamé, Pascal Rischmann, Yves Allory, François Radvanyi, Isabelle Bernard-Pierrot, Philippe Lluel, Thierry Massfelder. High specific characterization of patient-derived tumor xenograft models for accelerating drug development in muscle-invasive bladder cancers [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 1930.
Inflammatory Mediators in Periodontal Pathogenesis
Olivier Huck, Nurcan Buduneli, Denisse Bravo
Mediators of Inflammation, 2019, pp.1-2. ⟨10.1155/2019/2610184⟩
Article dans une revuePrognostic Value of Incomplete Revascularization after Percutaneous Coronary Intervention Following Acute Coronary Syndrome: Focus on CKD Patients
Thomas Cardi, Anas Kayali, Antonin Trimaille, Benjamin Marchandot, Jessica Ristorto, Viet Anh Hoang, Sébastien Hess, Marion Kibler, Laurence Jesel, Patrick Ohlmann, Olivier Morel
Journal of Clinical Medicine, 2019, 8 (6), pp.810. ⟨10.3390/jcm8060810⟩
Article dans une revueAbstractBackground: Residual coronary artery disease (CAD) has been associated with worsened prognosis in patients undergoing percutaneous coronary intervention (PCI) for acute coronary syndromes (ACS). The residual SYNTAX Score (rSS) aims to assess residual CAD after PCI. The association between kidney function and rSS has not been investigated in ACS patients. In this study, we sought to determine whether chronic kidney disease (CKD) patients exhibit more incomplete revascularization following stage revascularization procedures by PCI. We evaluated the impact of incomplete revascularization on the occurrence of major cardiovascular events (MACE) at one-year follow-up. Methods: A total of 831 ACS patients undergoing PCI were divided into 3 subgroups according to their estimated Glomerular Filtration Rate (eGFR): 695 with eGFR ≥ 60 mL/min/1.73 m 2 , 108 with eGFR 60-30 mL/min/1.73 m 2 , 28 with eGFR < 30 mL/min/1.73 m 2. Initial SYNTAX score (SS) and rSS were calculated for all patients. Incomplete revascularization was defined by rSS > 8. The primary endpoint was the occurrence of MACE (all-cause mortality, myocardial infarction (MI), repeated revascularization except from planned revascularization, stroke and definite or probable recurrent stent thrombosis) one year after the index procedure. Results: Severe CKD patients had significantly higher MACE (12.0% vs. 25.9% vs. 35.7%; p < 0.001), all-cause mortality, cardiovascular mortality and heart failure events. Patients with rSS > 8 had higher MACE, all-cause and cardiovascular mortality. CKD was an independent predictive factor of rSS > 8 (HR: 1.65, 95% CI: 1.01 to 2.71; p = 0.048). Multivariate analysis identified rSS > 8, but not CKD, as an independent predictor of cardiac death and MACE. Conclusion: In ACS, CKD is predictive of incomplete revascularization, which stands out as a strong predictor of adverse cardiovascular outcomes including cardiac death and MACE.
Oral health related quality of life of children and adolescents affected by rare orofacial diseases: a questionnaire-based cohort study
Lisa Friedlander, Ariane Berdal, Priscilla Boizeau, Brigitte Alliot Licht, Marie-Cécile Manière, Arnaud Picard, Olivier Azzis, Marie-Paule Vazquez, Corinne Alberti, Muriel de la Dure Molla, Brigitte Alliot-Licht
Orphanet Journal of Rare Diseases, 2019, 14 (1), pp.124. ⟨10.1186/s13023-019-1109-2⟩
Article dans une revueAbstractBackground: Rare diseases affecting the teeth, the oral cavity and the face are numerous, each of them present specific characteristics, and is a lifelong condition. The aim of the study was to assess the association between Oral health-related quality of life (OHRQoL), and demographic characteristics, clinical and dental factors, and psycho-social characteristics to investigate that oral symptoms are not the main factors underlying a decrease in OHRQoL. Material and methods: We conducted a national cohort study in French centres for rare diseases (RD) specialized in orofacial diseases. The inclusion criteria were: to have received care in RD centres over the last 5 years (2012-2017) and to have been between 6 and 17 years of age on September 1, 2017. Patients were invited to answer a questionnaire composed of socio-demographic, clinical and dental questions, psychosocial questions and then fill in the Child-OIDP Index. At the end of the questionnaire, a free space was left for the patient to add a verbatim comment to provide qualitative data. Thematic analysis was used to analyze the verbatim answers. Results: Complete data were available for 110 patients. The sample included 44.5% boys and 55.5% girls. Ages ranged from 6 to 17 years old and 68.2% were between 6 to 12 years old and 31.8% were between 13 and 17 years old. Factor associated with a lower OHRQoL were: being a girl (p = 0.03), renouncement to dental care for financial reasons (p = 0.01), having syndromic disease (p = 0.01), having a problem with tooth shape and color (p = 0.03), feeling isolated, alone and different from other children (p = 0.003 and p = 0.02). Qualitative analysis highlighted very little recourse to psychological care and patients reported great anxiety and fear about the future. Conclusion: OHRQoL of children suffering from these diseases is impaired, especially from the psychosocial point of view but also from that of the course of treatment and access to care. There is a need to improve the legibility of care pathways and the financial coverage of treatments.
Periodontal condition of patients with Thalassemia Major: A systematic review and meta-analysis
Aliye Akcalı, Mehmet Selim Yıldız, Zeynep Akcalı, Olivier Huck, Anton Friedmann
Archives of Oral Biology, 2019, 102, pp.113-121. ⟨10.1016/j.archoralbio.2019.04.004⟩
Article dans une revueStability Study of 0.5 g/mL Urea Oral Solution in InOrpha®
Johan Bourbon, Anne Dory, Laurent Perello, Laure Belotti, Fanny Reisz, Geneviève Ubeaud-Sequier, Bénédicte Gourieux
Pharmaceutical Technology in Hospital Pharmacy, 2019, 4 (2), pp.69-76. ⟨10.1515/pthp-2019-0015⟩
Article dans une revueAbstractBackground Urea is recommended in the 2nd line treatment in moderate to severe hyponatraemia induced by syndrome of inappropriate antidiuretic hormone secretion (SIADH), when water restriction is insufficient. A posology of 0.25–0.5 g/kg daily is suggested. A usual but inadequate urea oral preparation, i. e. 10 g urea powder dissolved in 100 mL water before use, was classically compounded. Therefore the pharmacy has developed a 0.5 g/mL urea oral liquid solution in InOrpha ® with better organoleptic characteristics to improve treatment adherence and reduce the preparation time. The aim of this study was to determine physicochemical and microbiological stability of the urea oral liquid solution in order to establish a shelf life of the preparation. Methods The 0.5 g/mL urea solution was compounded using urea powder in a commercial suspending vehicle: Inorpha ® . A validated high-performance liquid chromatographic (HPLC) method with UV detection was performed for the assay of urea. The preparations were packaged in amber glass bottles and stored at fridge (5 °C±3 °C) or at room temperature (24 °C±1 °C). The physicochemical (urea concentration, macroscopic change) and microbiological stability of the preparation was tested over 90 days. Urea concentration measurement at day 0 was considered as the reference value (100 % stability) and urea concentration in subsequent samples greater than 90 % were definite stable without macroscopic changes. Results The developed HPLC-UV method was validated in terms of linearity, specificity, accuracy and fidelity (less than 5 % for relative standard deviation and relative error). After 90 days, no microbial growth was noted and urea concentrations were always higher than 90 % of the initial concentration. Macroscopic changes were observed for the samples stored at fridge (5 °C+/− 3 °C) with massive crystallization of urea solution. Conclusions Although, all the preparations retain more than 95 % of the initial concentration after 90 days in all storage conditions, macroscopic change and pH change (more than 1 unit after 15 days at room temperature) have to be taken into account. The 0.5 g/mL urea oral liquid solution in InOrpha ® remains stable for 15 days at room temperature (24 °C±1 °C) in amber glass bottles.
Effect of a Recombinant Human Soluble Thrombomodulin on Mortality in Patients With Sepsis-Associated Coagulopathy
Jean-Louis Vincent, Bruno Francois, Igor Zabolotskikh, Mradul Kumar Daga, Jean-Baptiste Lascarrou, Mikhail Kirov, Ville Pettilä, Xavier Wittebole, Ferhat Meziani, Emmanuelle Mercier, Suzana Lobo, Philip Barie, Mark Crowther, Charles Esmon, Jawed Fareed, Satoshi Gando, Kenneth Gorelick, Marcel Levi, Jean-Paul Mira, Steven Opal, Joseph Parrillo, James Russell, Hidehiko Saito, Kazuhisa Tsuruta, Takumi Sakai, David Fineberg
JAMA Cardiology, 2019, 321 (20), pp.1993. ⟨10.1001/jama.2019.5358⟩
Article dans une revueAnti-Ku syndrome with elevated CK and anti-Ku syndrome with anti-dsDNA are two distinct entities with different outcomes
Lionel Spielmann, Benoit Nespola, François Séverac, Emmanuel Andres, Romain Kessler, Aurélien Guffroy, Vincent Poindron, Thierry Martin, Bernard Geny, Jean Sibilia, Alain Meyer
Annals of the Rheumatic Diseases, 2019, 78 (8), pp.1101-1106. ⟨10.1136/annrheumdis-2018-214439⟩
Article dans une revueThe role of GPCR signaling in cardiac Epithelial to Mesenchymal Transformation (EMT)
Canan G Nebigil, Laurent Désaubry
Trends in Cardiovascular Medicine, 2019, 29 (4), pp.200-204. ⟨10.1016/j.tcm.2018.08.007⟩
Article dans une revueAbstractCongenital heart disease is the most common birth defect, affecting 1.35 million newborns every year. Heart failure is a primary cause of late morbidity and mortality after myocardial infarction. Heart development is involved in several rounds of epithelial-to-mesenchymal transition (EMT) and mesenchymal-to-epithelial transition (MET). Errors in these processes contribute to congenital heart disease, and exert deleterious effects on the heart and circulation after myocardial infarction. The identification of factors that are involved in heart development and disease, and the development of new approaches for the treatment of these disorders are of great interest. G protein coupled receptors (GPCRs) comprise 40% of clinically used drug targets, and their signaling are vital components of the heart during development, cardiac repair and in cardiac disease pathogenesis. This review focuses on the importance of EMT program in the heart, and outlines the newly identified GPCRs as potential therapeutic targets of reprogramming EMT to support cardiac cell fate during heart development and after myocardial infarction. More specifically we discuss prokineticin, serotonin, sphingosine-1-phosphate and apelin receptors in heart development and diseases. Further understanding of the regulation of EMT/MET by GPCRs during development and in the adult hearts can provide the following clinical exploitation of these pathways.
Prognostic value of neutrophil to lymphocyte ratio in lung metastasectomy for colorectal cancer
Stéphane Renaud, Joseph Seitlinger, David St-Pierre, Richard Garfinkle, Yaseen Al Lawati, Francesco Guerrera, Enrico Ruffini, Pierre-Emmanuel Falcoz, Gilbert Massard, Lorenzo Ferri, Jonathan Spicer
European Journal of Cardio-Thoracic Surgery, 2019, 55 (5), pp.948-955. ⟨10.1093/ejcts/ezy388⟩
Article dans une revueÉvaluation de la gravité potentielle des erreurs interceptées par la conciliation des traitements médicamenteux en unité d’hospitalisation de courte durée
Faustine Chabod, Bénédicte Gourieux, Emmanuelle Lambert-Kuhn, Paul Albert Gayol, Bruno Michel, Pascal Bilbault
Annales françaises de médecine d'urgence, 2019, 9 (2), pp.73-80. ⟨10.3166/afmu-2018-0090⟩
Article dans une revueAbstractBackground : Medication reconciliation (MR) at hospital admission retroactively allows the interception and correction of errors by comparing the initial hospital prescription with the patient’s medication list; this list or best possible medication history being obtained by crossing various sources. This study aimed to assess the severity of potential harm of errors intercepted by MR on admission to emergency care unit. Method : The potential severity of the intercepted errors was assessed using a clinical algorithm considering two ways: considering the hospital stay only and regardless of duration; as if the error remained unresolved post discharge from hospital. These errors were positioned by a five-point scale rating their potential to cause harm: minor, significant, major, critical and catastrophic. Results : MR of 122 patients revealed 461 medications errors. The three most common classes involved were cardiovascular system ( N = 151, 32%), nervous system ( N = 103, 22%) and gastrointestinal ( N = 86, 18%) medications. The most common types of errors were omission ( N = 381, 83%) and incorrect dose ( N = 57, 12%). Among the errors intercepted, 1.1% had potential major clinical consequences if we considered the hospital stay and 8.5% were ranked major or critical if they remained unresolved post discharge from hospital. Conclusion: The assessment of the potential harm of medication errors reflects the clinical interest of the MR. This evaluation revealed a potential clinical impact in emergency care unit previously unknown by the medical teams. Method : The potential severity of the intercepted errors was assessed using a clinical algorithm considering two ways: considering the hospital stay only and regardless of duration; as if the error remained unresolved post discharge from hospital. These errors were positioned by a five-point scale rating their potential to cause harm: minor, significant, major, critical and catastrophic. Results : MR of 122 patients revealed 461 medications errors. The three most common classes involved were cardiovascular system ( N = 151, 32%), nervous system ( N = 103, 22%) and gastrointestinal ( N = 86, 18%) medications. The most common types of errors were omission ( N = 381, 83%) and incorrect dose ( N = 57, 12%). Among the errors intercepted, 1.1% had potential major clinical consequences if we considered the hospital stay and 8.5% were ranked major or critical if they remained unresolved post discharge from hospital. Conclusion : The assessment of the potential harm of medication errors reflects the clinical interest of the MR. This evaluation revealed a potential clinical impact in emergency care unit previously unknown by the medical teams.
Commentary
Pierre-Emmanuel Falcoz
Journal of Thoracic and Cardiovascular Surgery, 2019, 157 (4), pp.1668-1669. ⟨10.1016/j.jtcvs.2018.12.022⟩
Article dans une revueObstructive sleep apnoea syndrome in patients living with diabetes: which patients should be screened?
Anne-Laure Borel, Renaud Tamisier, Philip Böhme, Pascaline Priou, Antoine Avignon, Pierre-Yves Benhamou, Hélène Hanaire, Jean-Louis Pépin, Laurence Kessler, Paul Valensi, Patrice Darmon, Frédéric Gagnadoux
Journal of Diabetes & Metabolism, 2019, 45 (2), pp.91-101. ⟨10.1016/j.diabet.2018.08.006⟩
Article dans une revueAbstract<b>Aim: </b>Because type 2 diabetes (T2D) is related to obesity, it is often associated with obstructive sleep apnoea syndrome (OSAS), although OSAS is also frequently diagnosed in patients with type 1 diabetes (T1D) and may promote gestational diabetes. Thus, this systematic review of the scientific evidence aimed to evaluate the epidemiological association between OSAS and all forms of diabetes, the current understanding of the pathophysiological mechanisms behind these associations, the expected benefits and limitations of OSAS treatment in patients with diabetes and, finally, to propose which patients require screening for OSAS. <b>Methods: </b>A panel comprising French expert endocrinologists and pneumologists was convened. Two of these experts made a search of the relevant literature for each subpart of the present report; all panel experts then critically reviewed the entire report separately as well as collectively. <b>Results:</b> There is little evidence to support the notion that OSAS treatment improves glycated haemoglobin, although it may improve nighttime blood glucose control and insulin sensitivity. However, there is robust evidence that OSAS treatment lowers 24-h blood pressure. <b>Conclusion: </b>The high prevalence of OSAS in patients with T1D and T2D justifies screening for the syndrome, which should be based on clinical symptoms, as the benefits of OSAS treatment are mainly improvement of symptoms related to sleep apnoea. There are also several clinical situations wherein screening for OSAS seems justified in patients with diabetes even when they have no symptoms, particularly to optimalize control of blood pressure in cases of resistant hypertension and microvascular complications.
Angiotensin II‐induced redox‐sensitive SGLT1 and 2 expression promotes high glucose‐induced endothelial cell senescence
Sonia Khemais‐benkhiat, Eugenia Belcastro, Noureddine Idris‐khodja, Sin‐hee Park, Lamia Amoura, Malak Abbas, Cyril Auger, Laurence Kessler, Eric Mayoux, Florence Toti, Valérie Schini‐kerth
Journal of Cellular and Molecular Medicine, 2019, ⟨10.1111/jcmm.14233⟩
Article dans une revueNo evidence to support benefit of 14-day courses of amoxicillin-plus-metronidazole as adjunct to non-surgical periodontal treatment at three months
Rodrigo Martín-Cabezas, Olivier Huck
Evidence-Based Dentistry, 2019, 20 (1), pp.16-17. ⟨10.1038/s41432-019-0013-x⟩
Article dans une revueAssociation between periodontitis and chronic kidney disease: Systematic review and meta-analysis
Sonia Deschamps-Lenhardt, Rodrigo Martin-Cabezas, Thierry Hannedouche, Olivier Huck
Oral Diseases, 2019, 25 (2), pp.385-402. ⟨10.1111/odi.12834⟩
Article dans une revueContribution of Statins towards Periodontal Treatment: A Review
Catherine Petit, Fareeha Batool, Isaac Maximiliano Bugueno, Pascale Schwinté, Nadia Benkirane-Jessel, Olivier Huck
Mediators of Inflammation, 2019, 2019, pp.1-33. ⟨10.1155/2019/6367402⟩
Article dans une revueAbstractThe pleiotropic effects of statins have been evaluated to assess their potential benefit in the treatment of various inflammatory and immune-mediated diseases including periodontitis. Herein, the adjunctive use of statins in periodontal therapy in vitro , in vivo , and in clinical trials was reviewed. Statins act through several pathways to modulate inflammation, immune response, bone metabolism, and bacterial clearance. They control periodontal inflammation through inhibition of proinflammatory cytokines and promotion of anti-inflammatory and/or proresolution molecule release, mainly, through the ERK, MAPK, PI3-Akt, and NF- κ B pathways. Moreover, they are able to modulate the host response activated by bacterial challenge, to prevent inflammation-mediated bone resorption and to promote bone formation. Furthermore, they reduce bacterial growth, disrupt bacterial membrane stability, and increase bacterial clearance, thus averting the exacerbation of infection. Local statin delivery as adjunct to both nonsurgical and surgical periodontal therapies results in better periodontal treatment outcomes compared to systemic delivery. Moreover, combination of statin therapy with other regenerative agents improves periodontal healing response. Therefore, statins could be proposed as a potential adjuvant to periodontal therapy. However, optimization of the combination of their dose, type, and carrier could be instrumental in achieving the best treatment response.
Spontaneous ilio-psoas hematomas complicating intensive care unit hospitalizations
Thierry Artzner, Raphaël Clere-Jehl, Malika Schenck, Michel Greget, Hamid Merdji, Pierre de Marini, Nicolas Tuzin, Julie Helms, Ferhat Meziani
PLoS ONE, 2019, 14 (2), ⟨10.1371/journal.pone.0211680⟩
Article dans une revueAbstractBackground Ilio-psoas hematoma is a potentially lethal condition that can arise during hospital stay. However, neither the incidence nor the prognosis of patients whose stay in intensive care units (ICU) is complicated by a iatrogenic ilio-psoas hematoma is known. Methods A bicentric retrospective study was conducted to compile the patients who developed an ilio-psoas hematoma while they were hospitalized in ICU between January 2009 and December 2016. Their biometric characteristics, pre-existing conditions, the circumstances in which the hematoma was diagnosed, the treatments they received and their prognosis were recorded. Results Forty patients were diagnosed with an ilio-psoas hematoma during their ICU stay. The incidence of this complication was 3.8 cases for 1000 admissions, taking into account only patients who stayed more than three days in ICU. The median age of patients was 74 years old and the median time between admission and the diagnosis of ilio-psoas hematoma was 12.6 days. A large proportion of them was obese (42.5%) and/or under dialysis (50%) prior to developing their hematoma. Ninety-five percent of the patients had heparin at prophylactic or therapeutic doses. Only 10% of them were above the therapeutic range of anticoagulation. The ICU mortality rate was of 50% following this complication (versus a general mortality rate of 22% for the patients without IPH over the same period of time). Patients with IPH that were complicated by disseminated intravascular coagulopathy had a significantly higher mortality rate than those with IPH and no disseminated intravascular coagulopathy (OR 6.91, 95% CI [1.28; 58.8], p = 0.04). Conclusion Age, anticoagulation, a high body mass index and dialysis seem to be risk factors of developing an ilio-psoas hematoma in ICU. Iatrogenic ilio-psoas hematomas complicated by disseminated intravascular coagulopathies are more at risk of leading to death. It is noteworthy that activated partial thromboplastin time above the therapeutic range was not a good predictor of developing a hematoma for patients who received unfractioned heparin therapy.
Thromboprophylaxis in the obese surgical patient
Annick Steib, Lelia Grunebaum, Florence Toti, Charles-Ambroise Tacquard
European Journal of Anaesthesiology, 2019, 36 (2), pp.162-163. ⟨10.1097/EJA.0000000000000936⟩
Article dans une revueClinical presentation and follow-up of women affected by Brugada syndrome
Pauline Berthome, Romain Tixier, Jean Briand, Olivier Geoffroy, Dominique Babuty, Jacques Mansourati, Laurence Jesel, Jean-Marc Dupuis, Paul Bru, Florence Kyndt, Béatrice Guyomarch, Aurélie Thollet, Nathalie Behar, Philippe Mabo, Frédéric Sacher, Vincent Probst, Jean-Baptiste Gourraud
Heart Rhythm, 2019, 16 (2), pp.260-267. ⟨10.1016/j.hrthm.2018.08.032⟩
Article dans une revueTambulin is a major active compound of a methanolic extract of fruits of Zanthoxylum armatum DC causing endothelium-independent relaxations in porcine coronary artery rings via the cyclic AMP and cyclic GMP relaxing pathways
Muhammad Naveed Mushtaq, Sushmita Ghimire, A Alamgeer, Muhammad Shoaib Akhtar, Achyut Adhikari, Cyril Auger, Valerie Schini-Kerth
Phytomedicine, 2019, 53, pp.163-170. ⟨10.1016/j.phymed.2018.09.020⟩
Article dans une revueAtrial arrhythmias in Takotsubo cardiomyopathy: incidence, predictive factors, and prognosis
Laurence Jesel, Charlotte Berthon, Nathan Messas, Han Lim, Mélanie Girardey, Halim Marzak, Benjamin Marchandot, Annie Trinh, Patrick Ohlmann, Olivier Morel
EP-Europace, 2019, 21 (2), pp.298-305. ⟨10.1093/europace/euy147⟩
Article dans une revueAssessment of Renal Dysfunction Improves the Simplified Pulmonary Embolism Severity Index (sPESI) for Risk Stratification in Patients with Acute Pulmonary Embolism
Antonin Trimaille, Benjamin Marchandot, Mélanie Girardey, Clotilde Muller, Han S Lim, Annie Trinh, Patrick Ohlmann, Bruno Moulin, Laurence Jesel, Olivier Morel
Journal of Clinical Medicine, 2019, 8 (2), pp.160. ⟨10.3390/jcm8020160⟩
Article dans une revueAbstractBackground: Whereas the major strength of the simplified pulmonary embolism severity index (sPESI) lies in ruling out an adverse outcome in patients with sPESI of 0, the accuracy of sPESI ≥ 1 in risk assessment remains questionable. In acute pulmonary embolism (APE), the estimated glomerular filtration rate (eGFR) can be viewed as an integrate marker reflecting not only previous chronic kidney disease (CKD) damage but also comorbid conditions and hemodynamic disturbances associated with APE. We sought to determine whether renal dysfunction assessment by eGFR improves the sPESI score risk stratification in patients with APE. Methods: 678 consecutive patients with APE were prospectively enrolled. Renal dysfunction (RD) at diagnosis of APE was defined by eGFR < 60 mL/min/1.73 m 2 and acute kidney injury (AKI) by elevation of creatinine level >25% during in-hospital stay. Results: RD was observed in 26.9% of the cohort. AKI occurred in 18.8%. A stepwise increase in 30-day mortality, cardiovascular mortality and overall mortality was evident with declining renal function. Multivariate analysis identified RD and CRP (C-reactive protein) level but not sPESI score as independent predictors of 30-day mortality. AKI, 30-day mortality, overall mortality, and cardiovascular mortality were at their highest level in patients with eGFR < 60 mL/min/1.73 m 2 and sPESI ≥1. Conclusion: in patients with APE, the addition of RD to the sPESI score identifies a specific subset of patients at very high mortality.
Serotonin contribution to cardiac valve degeneration: new insights for novel therapies?
Estelle Ayme-Dietrich, Roland Lawson, Sylvia da Silva, Jean-Philippe Mazzucotelli, Laurent Monassier
Pharmacological Research, 2019, 140, pp.33-42. ⟨10.1016/j.phrs.2018.09.009⟩
Article dans une revueBlindness as an uncommon complication of Streptococcus pneumoniae systemic infection
Raphaël Clere-Jehl, Hamid Merdji, Dan Derhy, Julie Helms
Intensive Care Medicine, 2019, 45 (2), pp.263-265. ⟨10.1007/s00134-018-5486-0⟩
Article dans une revueChain pain following cardiac surgery in a 35-year-old man
Benjamin Marchandot, Bogdan Radulescu, Olivier Morel
Heart, 2019, 105 (3), pp.234-243. ⟨10.1136/heartjnl-2018-313577⟩
Article dans une revueAbstractClinical introduction A 35-year-old man with multiple cardiovascular risk factors presented with a recent history of fever and acute heart failure. His initial echocardiogram showed evidence of severe aortic regurgitation due to ongoing infective endocarditis. Preoperative coronary angiography revealed no coronary abnormalities. Urgent aortic valve replacement was performed and a 29 mm St Jude mechanical valve was implanted. While blood and resected valvular tissue cultures were negative for bacteria, a PCR-based analysis revealed the presence of penicillin-sensitive Streptococcus pneumoniae . Echocardiographic follow-up study at day 3 showed excellent mechanical valve function with no persistent signs of endocarditis. Eight days after surgery, our patient presented with severe chest pain. The ECG is shown in figure 1A and coronary angiography was performed for diagnostic confirmation (figure 1B–D and online supplementary video 1). Supplementary file 1 Figure 1 (A) 12-lead ECG. (B, C) Selective angiogram of the left main, left anterior descending artery and circumflex artery. (D) Aortic root angiography. Question Which of the following is most likely the diagnostic? Occlusion of the left anterior descending coronary artery Dissection of the left anterior descending coronary artery Valsalva aneurysm presenting as an acute coronary syndrome Left anterior descending coronary artery spasm Left main coronary aneurysm
Poly (Butylene Adipate-Co-Terephthalate) and Poly (Ɛ-Caprolactone) and Their Bionanocomposites with Cellulose Nanocrystals: Thermo-Mechanical Properties and Cell Viability Study
Marcia Cristina Branciforti, Caroline Faria Bellani, Carolina Lipparelli Morelli, Alice Ferr, Nadia Benkirane-Jessel, Rosario Elida Suman Bretas
Journal of Renewable Materials, 2019, 7 (3), pp.269-277. ⟨10.32604/jrm.2019.01833⟩
Article dans une revueAbstractAlthough nanocomposites have recently attracted special interest in the tissue engineering area, due to their potential to reinforce scaffolds for hard tissues applications, a number of variables must be set prior to any clinical application. This manuscript addresses the evaluation of thermo-mechanical properties and of cell proliferation of cellulose nanocrystals (CNC), poly(butylene adipate-co-terephthalate) (PBAT), poly(ε-caprolactone) (PCL) films and their bionanocomposites with 2 wt% of CNC obtained by casting technique. Cellulose nanocrystals extracted from Balsa wood by acid hydrolysis were used as a reinforcing phase in PBAT and PCL matrix films. The films and pure CNC at different concentrations were cultured with osteoblasts MG-63 and the cell proliferation was assessed by AlamarBlue® assay. The thermal-mechanical properties of the films were evaluated by dynamic-mechanical thermal analysis (DMTA). It was found by DMTA that the CNC acted as reinforcing agent. The addition of CNCs in the PBAT and PCL matrices induced higher storage moduli due to the reinforcement effects of CNCs. The cell viability results showed that neat CNC favored osteoblast proliferation and both PBAT and PCL films incorporated with CNC were biocompatible and supported cell proliferation along time. The nature of the polymeric matrix or the presence of CNC practically did not affect the cell proliferation, confirming they have no in vitro toxicity. Such features make cellulose nanocrystals a suitable candidate for the reinforcement of biodegradable scaffolds for tissue engineering and biomedical applications
Intake of the omega 3 PUFAs formulation EPA:DHA 6:1 by aged rats reduced shedding of microvesicles from spleen-derived cultured leukocytes and their ability to promote senescence in endothelial cells
Abdul Wahid Qureshi, Raed Altamimy, Ali El Habhab, Lamia Amoura, Sonia Khemais-Berkhiat, Mohamad Kassem, Muhammad Akmal Farooq, Hira Hasan, Sinhee Park, Fatiha El Ghazouani, Cyril Auger, Valerie Schini-Kerth, Florence Toti
European Heart Journal, 2019, 40, pp.1320-1320. ⟨10.1093/eurheartj/ehz748.0731⟩
Article dans une revueThe synthetic flavagline FL3 suppresses intestinal tumorigenesis in APC(Mini+) mice
Dn Jackson, Hussein Abou-Hamdan, Bn Cook, Laurent Désaubry, Rf Souza, Arianne L. Theiss
FASEB Journal, 2019, 33, ⟨10.1096/fasebj.2019.33.1_supplement.761.2⟩
Article dans une revueDoes arthroscopic assistance improve reduction in distal articular radius fracture? A retrospective comparative study using a blind CT assessment
Marc Saab, P.-E. Wunenburger, Elvire Guerre, Christophe Chantelot, Olivier Morel, Matthieu Ehlinger, Th. Bauer
European Journal of Orthopaedic Surgery & Traumatology, 2019, 29 (2), ⟨10.1007/s00590-018-2348-y⟩
Article dans une revueImpact of lung retransplantation on survival in patients listed for repeat transplantation: results from a national cohort study
C Cantrelle, Jérôme Le Pavec, C Legeai, C Picard, Pierre-Emmanuel Falcoz, Mr Gaubert, Jean-François Mornex, O Bastien, Richard Dorent
Transplant International, 2019, 32, pp.336-336
Article dans une revueBone Grafts, Bone Substitutes and Regenerative Medicine Acceptance for the Management of Bone Defects Among French Population: Issues about Ethics, Religion or Fear?
Damien Offner, Gabriel Fernandez de Grado, Inès Meisels, Luc Pijnenburg, Florence Fioretti, Nadia Benkirane-Jessel, Anne-Marie Musset
Cell Medicine, 2019, 11, pp.215517901985766. ⟨10.1177/2155179019857661⟩
Article dans une revueAbstractSeveral techniques exist to manage bone defects in patients: bone grafts (autograft, allograft, xenograft), use of synthetic bone substitutes, or use of the products of bone regenerative medicine. Studies generally focus on their efficacy, but few focus on their acceptance. Our objectives were to assess their theoretical acceptance among the French general population, and to identify issues justifying refusals, by mean of an open e-questionnaire. The questionnaire was submitted to a general French population, and explained these techniques in an understandable way. Participants were asked to say whether they would accept or refuse these techniques, specifying why in case of refusal (fear of the technique, ethical reasons, religious reasons). In total, 562 persons participated. Autograft and use of the products of bone regenerative medicine were the most accepted techniques (93.4% and 94.1%, respectively). Xenograft was the least accepted technique (58.2%). Most refusals were due to fear such as failure, pain, infection (autograft 8%, allograft 14.9%, xenograft 25.3%, synthetic bone substitutes 14.6%, and products of bone regenerative medicine 6.8%). Ethical reasons were mostly mentioned for allograft (6.4%) and xenograft (18.3%). Religious reasons were scarcely mentioned, only for xenograft (1.2%). Thus, acceptance of techniques does not seem to be greatly linked to sociodemographic characteristics in France. However, other countries with their own cultural, religious, and population patterns may show different levels of acceptance. This study shows that bone regenerative medicine is a promising research direction, reaching biological and also humanist quality standards, expected to improve the health of patients. Information is still the cornerstone to defuse issues about fear.
Cost-effectiveness of the COPD Patient Management European Trial home-based disease management program
Jean Bourbeau, Denis Granados, Stéphane Roze, Isabelle Durand-Zaleski, Pere Casan, Dieter Köhler, Silvia Tognella, Jose Luis Viejo, Roberto W. Dal Negro, Romain Kessler
International Journal of Chronic Obstructive Pulmonary Disease, 2019, 14, pp.645-657. ⟨10.2147/COPD.S173057⟩
Article dans une revueAbstractPurpose: Efficient management of COPD represents an international challenge. Effective management strategies within the means of limited health care budgets are urgently required. This analysis aimed to evaluate the cost-effectiveness of a home-based disease management (DM) intervention vs usual management (UM) in patients from the COPD Patient Management European Trial (COMET). Methods: Cost-effectiveness was evaluated in 319 intention-to-treat patients over 12 months in COMET. The analysis captured unplanned all-cause hospitalization days, mortality, and quality-adjusted life expectancy. Costs were evaluated from a National Health Service perspective for France, Germany, and Spain, and in a pooled analysis, and were expressed in 2015 Euros (EUR). Quality of life was assessed using the 15D health-related quality-of-life instrument and mapped to utility scores. Results: Home-based DM was associated with improved mortality and quality-adjusted life expectancy. DM and UM were associated with equivalent direct costs (DM reduced costs by EUR -37 per patient per year) in the pooled analysis. DM was associated with lower costs in France (EUR -806 per patient per year) and Spain (EUR -51 per patient per year), but higher costs in Germany (EUR 391 per patient per year). Evaluation of cost per death avoided and cost per quality-adjusted life year (QALY) gained showed that DM was dominant (more QALYs and cost saving) in France and Spain, and cost-effective in Germany vs UM. Nonparametric bootstrapping analysis, assuming a willingness-to-pay threshold of EUR 20,000 per QALY gained, indicated that the probability of home-based DM being cost-effective vs UM was 87.7% in France, 81.5% in Spain, and 75.9% in Germany. Conclusion: Home-based DM improved clinical outcomes at equivalent cost vs UM in France and Spain, and in the pooled analysis. DM was cost-effective in Germany with an incremental cost-effectiveness ratio of EUR 2,541 per QALY gained. The COMET home-based DM intervention could represent an attractive alternative to UM for European health care payers.
Application of Chitosan in Bone and Dental Engineering
Alicia Aguilar, Naïmah Zein, Ezeddine Harmouch, Brahim Hafdi, Fabien Bornert, Damien Offner, François Clauss, Florence Fioretti, Olivier Huck, Nadia Benkirane-Jessel, Guoqiang Hua
Molecules, 2019, 24 (16), pp.3009. ⟨10.3390/molecules24163009⟩
Article dans une revueAbstractChitosan is a deacetylated polysaccharide from chitin, the natural biopolymer primarily found in shells of marine crustaceans and fungi cell walls. Upon deacetylation, the protonation of free amino groups of the d-glucosamine residues of chitosan turns it into a polycation, which can easily interact with DNA, proteins, lipids, or negatively charged synthetic polymers. This positive-charged characteristic of chitosan not only increases its solubility, biodegradability, and biocompatibility, but also directly contributes to the muco-adhesion, hemostasis, and antimicrobial properties of chitosan. Combined with its low-cost and economic nature, chitosan has been extensively studied and widely used in biopharmaceutical and biomedical applications for several decades. In this review, we summarize the current chitosan-based applications for bone and dental engineering. Combining chitosan-based scaffolds with other nature or synthetic polymers and biomaterials induces their mechanical properties and bioactivities, as well as promoting osteogenesis. Incorporating the bioactive molecules into these biocomposite scaffolds accelerates new bone regeneration and enhances neovascularization in vivo.
Assessment of iron oxide nanoparticle ecotoxicity on regeneration and homeostasis in the replacement model system Schmidtea mediterranea
Thao A. Tran, Michelle Hesler, Oscar H. Moriones, Alba Jimeno-Romero, Benjamin Fischer, Neus G. Bastús, Victor Puntes, Sylvia Wagner, Yvonne L. Kohl, Luca Gentile
ALTEX - Alternatives to Animal Experimentation, 2019, 36 (4), pp.583-596. ⟨10.14573/altex.1902061⟩
Article dans une revueAbstractIron oxide nanoparticles (IONs) are used in a number of applications, from food to cosmetics, from medical applications to magnetic storage. In spite of the 550 tons produced each year in Europe alone, no effective dose limit recommendations are established and the overall risks connected to IONs are still debated. The incorporation of IONs in daily life raises a concern about their effects on the environment, on living organisms, and on human health. In this study, we used freshwater planarians to assess the nanoecotoxicity of IONs. Planarians are free-living invertebrates known for their astonishing regenerative ability. Because of their sensitivity to toxicants, they are often used to determine the effects of toxic, genotoxic and carcinogenic environmental compounds with an approach in line with the 3Rs (Reduce, Refine, Replace) principle. Planarians were exposed to IONs at concentrations up to 1 mg/mL and their effects were evaluated at the behavioral, morphofunctional and molecular levels, with a special emphasis on the regeneration process. Our results indicate that IONs did not affect the stem cell population dynamics, nor did they induce substantial changes in either homeostatic or regenerating planarians. As positive controls, gold nanoparticles coated with the pro-apoptotic anti-cancer drug hexadecylmethylammonium bromide, silver nanoparticles and highly concentrated polystyrene nanoparticles were used. These all elicited toxic effects. Therefore, we conclude that IONs at environmental concentrations are safe for planarians, and that the planarian is a powerful model system that can replace vertebrate animal models in nanoecotoxicology research and for nanoecotoxicology studies.
What Motivates [or not] Medical Students to Choose Emergency Medicine as Their Specialty?
T Pelaccia, Pm Roy, D Douillet, Pascal Bilbault, M Abbiati
Annales françaises de médecine d'urgence, 2019, 9 (4), pp.221-228. ⟨10.3166/afmu-2019-0166⟩
Article dans une revueAbstractAims: Since 2017, emergency medicine is a full specialty in France. In 2018, 21 positions were left vacant at the internship in emergency medicine. We wanted to study the reasons why or not students want to choose emergency medicine, as well as their motivation for this specialty. Procedure: We conducted a prospective and monocentric observational study. All undergraduate medical students at the Strasbourg Faculty of Medicine were contacted between 2017 and 2018. Self-administered questionnaires were sent to collect the type of specialization being considered, the respondents' degree of motivation to become an emergency physician and the influence of various motivational factors on their willingness or not to choose emergency medicine as a specialty. Results: Seven percent of first-year medical students want to choose emergency medicine as their specialty. They are now only one percent at the end of their undergraduate studies. Lifestyle is increasingly seen between the beginning and end of undergraduate studies as particularly dissuasive. The variety of the situations encountered and the intellectual challenge are attractive and stable factors. Conclusion: The attractiveness of emergency medicine could be enhanced by communicating with undergraduate medical students about motivating factors and by continuing to think about how to improve the quality of life of emergency physicians.
Reply to the letter "Not only the global longitudinal strain, but we can do more for the non-ST elevation acute coronary syndrome patients by speckle-tracking-echocardiography
Thibault Caspar, Benjamin Marchandot, Olivier Morel, Patrick Ohlmann
International Journal of Cardiology, 2019, 274, ⟨10.1016/j.ijcard.2018.08.092⟩
Article dans une revueAcute Cardiac Failure Due to Takotsubo Cardiomyopathy Secondary to a Phone Call for Lung Transplantation: A Case Report
Loic Kassegne, Tristan Degot, Olivier Morel, Jérémie Reeb, Adrien Carmona, Armelle Schuller, Sandrine Hirschi, Michele Porzio, G Martin, Marianne Riou, Romain Kessler, Benjamin Renaud-Picard
Transplantation Proceedings, 2019, 51 (9), pp.3167-3170. ⟨10.1016/j.transproceed.2019.07.003⟩
Article dans une revueAbstractLung transplantation is a therapeutic option for certain end-stage lung diseases. The phone call for lung transplantation is a major event in the life of these patients; as a result, it can generate significant stress. We herein present the case of a 58-year-old female patient with end-stage chronic obstructive pulmonary disease (COPD) who, while on the lung transplantation waiting list, received such a call. Complete transplant work-up, including cardiac tests undertaken shortly before, had revealed no contraindication to lung transplantation. She was admitted with severe acute respiratory failure, and her extensive work-up was compatible with pulmonary edema due to takotsubo cardiomyopathy. The lung transplantation was thus cancelled, owing to the patient's health condition and the poor quality of the graft as well. The patient stayed in the intensive care unit for several days, requiring noninvasive ventilation. The left ventricular function recovered completely within 10 days postdiagnosis, and the patient was discharged 13 days after her admission. The patient was transplanted 1 month thereafter, without any particular problems; she is currently, 8 months post-transplantation, in good condition. In the given case, the call for lung transplantation could have generated emotional stress severe enough to lead to takotsubo cardiomyopathy.
VATS lobectomy vs. open lobectomy for early-stage lung cancer: an endless question-are we close to a definite answer?
Francesco Guerrera, Anne Olland, Enrico Ruffini, Pierre-Emmanuel Falcoz
Journal of Thoracic Disease, 2019, 11 (12), pp.5616-5618. ⟨10.21037/jtd.2019.12.19⟩
Article dans une revueLung cancer after lung transplantation: An analysis of 25 years of experience in a single institution
Eva Chatron, Tristan Dégot, Elena Salvaterra, Antoine Dumazet, Michele Porzio, Sandrine Hirschi, Armelle Schuller, Gilbert Massard, Benjamin Renaud-Picard, Romain Kessler
Clinical Transplantation, 2019, 33 (1), pp.e13446. ⟨10.1111/ctr.13446⟩
Article dans une revueImpact of tooth-related factors on photodynamic therapy effectiveness during active periodontal therapy: A 6-months split-mouth randomized clinical trial
Laetitia Harmouche, Aymeric Courval, Anne Mathieu, Catherine Petit, Olivier Huck, François Severac, Jean-Luc Davideau
Photodiagnosis and Photodynamic Therapy, 2019, 27, pp.167-172. ⟨10.1016/j.pdpdt.2019.05.022⟩
Article dans une revueAbstractBackground: The persistence of periodontal pockets > 5 mm after periodontal treatments increases the risk of periodontitis recurrence and the need of periodontal surgery. This study evaluated the impact of tooth-related factors on the effectiveness of adjunctive photodynamic treatment (PDT) in the reduction of pockets > 5 mm during active periodontal treatment. Methods: Thirty-six patients suffering from severe chronic periodontitis were evaluated in a 6-months splitmouth randomized clinical trial. Each quadrant was assigned to test (scaling and root planing (SRP) + PDT) or control (SRP alone) group. PDT was conducted using the toluidine blue O and a light-emitting diode (LED) with a red spectrum. PDT applications were performed immediately after SRP, 7 days later and at 3 months. Plaque index (PI), bleeding on probing (BOP), periodontal pocket depth (PPD), and clinical attachment level (CAL) were recorded at baseline, 3 and 6 months. Results: Multilevel analysis showed a significant reduction of pockets > 5 mm in test group in comparison with control group at 3 (OR = 0.69) and 6 months (OR = 0.77). This effect was mainly observed at 6 months in initially deep sites (PPD > 6 mm) with BOP (OR = 0.57). At sites exhibiting PI > 1 no PDT effect was observed. A more moderate PDT effect was observed on mean PPD and BOP reductions at 3 months only. Conclusions: Repeated applications of PDT significantly improved SRP outcomes, reducing by more than 40% residual pockets > 5 mm in initially deep and bleeding on probing periodontal sites. PDT effect was negatively influenced by dental plaque accumulation.
Polymer-Based Instructive Scaffolds for Endodontic Regeneration
Naimah Zein, Ezeddine Harmouch, Jean-Christophe Lutz, Gabriel Fernandez de Grado, Sabine Kuchler-Bopp, François Clauss, Damien Offner, Guoqiang Hua, Nadia Benkirane-Jessel, Florence Fioretti
Materials, 2019, 12 (15), pp.2347. ⟨10.3390/ma12152347⟩
Article dans une revueAbstractThe challenge of endodontic regeneration is modulated by clinical conditions which determine five kinds of tissue requirements: pulp connective-tissue formation, dentin formation, revascularization, reinnervation and radicular edification. Polymer scaffolds constitute keystone of the different endodontic regenerative strategies. Indeed, scaffolds are crucial for carrying active molecules and competent cells which optimize the regeneration. Hydrogels are very beneficial for controlling viscosity and porosity of endodontic scaffolds. The nanofibrous and microporous scaffolds mimicking extracellular matrix are also of great interest for promoting dentin-pulp formation. Two main types of polymer scaffolds are highlighted: collagen and fibrin. Collagen scaffolds which are similar to native pulp tissue, are adequate for pulp connective tissue formation. Functionnalization by active biomolecules as BMP, SDF-1, G-CSF enhances their properties. Fibrin or PRF scaffolds present the advantage of promoting stem cell differentiation and concomitant revascularisation. The choice of the type of polymers (polypeptide, PCL, chitosan) can depend on its ability to deliver the active biomolecule or to build as suitable hydrogel as possible. Since 2010s, proposals to associate different types of polymers in a same scaffold have emerged for adding advantages or for offsetting a disadvantage of a polymer. Further works would study the synergetic effects of different innovative polymers composition.
Retrieving a displaced third molar from the infratemporal fossa: case report of a minimally invasive procedure
Jean-Christophe Lutz, Roberto Luigi Cazzato, Marc-Kevin Le Roux, Fabien Bornert
BMC Oral Health, 2019, 19, pp.149. ⟨10.1186/s12903-019-0852-z⟩
Article dans une revueAbstractBackground The appropriate management of postoperative complication of wisdom teeth removal is of utmost importance as it can result in legal procedures.The accidental displacement of a maxillary third molar in the infratemporal fossa (ITF), is a rare complication that can occur even with experienced surgeons.The numerous retrieval techniques reported are invasive and provide an unpredictable access.Our aim was to achieve the safe and swift retrieval of the tooth displaced to an area of such complex anatomy. Case presentation We describe the case of a 17-year-old female patient whose right upper third molar was accidentally pushed upward to the ITF and became unreachable.Retrieval based on interventional radiology using the CT-guided placement of a bone trocar above the displaced tooth was successfully performed. The postoperative course was uneventful. Conclusions CT scan assisted interventional radiology provides both, real-time assessment of the tooth position through image refreshment, and steady stabilization of the displaced tooth. Therefore, it allows a safe and non-traumatic retrieval with a time-efficient procedure achieved through a minimally-invasive approach with inconspicuous scaring. We believe that such a procedure is an interesting treatment option for optimal outpatient care. To our knowledge, no such case has been previously described.
Cuff Leak Test for the Diagnosis of Post-Extubation Stridor: A Multicenter Evaluation Study
David Schnell, Benjamin Planquette, Asael Berger, Sybille Merceron, Julien Mayaux, Lucas Strasbach, Stéphane Legriel, Sandrine Valade, Michael Darmon, Ferhat Meziani
Journal of Intensive Care Medicine, 2019, 34 (5), pp.391-396. ⟨10.1177/0885066617700095⟩
Article dans une revueAbstractBACKGROUND:: Cuff leak test was developed to predict the occurrence of post-extubation stridor (PES). This study evaluated the diagnostic performance of this test in unselected critically ill patients. METHODS:: Multicenter prospective study including unselected ventilated patients at the time of their first planned extubation. The diagnostic performance of 4 different cuff leak tests was assessed. RESULTS:: Post-extubation stridor occurred in 34 (9.4%) of 362 included patients. Compared to patients without PES, patients with PES required more frequently reintubation (6 [17.6%] vs 26 [7.9%], P = .041), prolonged duration of ventilation (6 [3-13] vs 5 [2-9] days, P = .029), and longer intensive care unit (ICU) stay (12 [6-17.5] vs 7.5 [4-13] days, P = .018). However, ICU mortality was similar in both groups (1 [2.9%] vs 23 [7.0%], P = .61). The 4 cuff leak tests display poor diagnostic accuracy: sensitivities ranging from 27% to 46%, specificities from 70% to 88%, positive predictive values from 14% to 19%, and negative predictive values from 92% to 93%. CONCLUSION:: Post-extubation stridor occurs in less than 10% of unselected critically ill patients. The several cuff leak tests display limited diagnostic performance for the detection of PES. Given the high rate of false positives, routine cuff leak test may expose to undue prolonged mechanical ventilation.
Ability to Propose Optimal Prosthetic Rehabilitation can be Improved by Discussion between the Dentist and Radiation Oncologist Regarding Upstream Dosimetry
Mélanie Rouers, Fabien Bornert, Pierre Truntzer, Sarah Dubourg, Cyrielle Bourrier, Delphine Antoni, Georges Noël
European Journal of Dentistry, 2019, 13 (1), pp.88-94. ⟨10.1055/s-0039-1688523⟩
Article dans une revueAbstractOBJECTIVE: Improvement of dental rehabilitation for patients who have undergone radiation therapy requires knowledge of the dose in the maxillary and mandible bones. MATERIALS AND METHODS: Forty-three patients with head and neck cancers underwent evaluation for dental rehabilitation before radiation treatment dosimetry. The delivered dose to the maxilla and mandible was determined. From the dose data in the literature, three levels of risk of implant failure were defined. According to the delivered doses, the authors calculated the percentage of patients who could be fully rehabilitated with an implant, as proposed by the dentist before radiation planning. RESULTS: Before dosimetry calculation, all of the completely edentulous arches and 94 partially edentulous (PESs) sextants could be optimally rehabilitated. After dose calculation, among the 14 arches of 7 patients who were completely edentulous, according to the mean and maximal delivered doses, 11 arches (78.6%) and 7 arches (50%) could receive an optimal prosthesis, respectively. For the three patients, who were PESs but with one arch that was completely edentulous, according to the mean and maximal delivered doses, one arch for each dose condition could receive an optimal prosthesis. Among the 94 PESs sextants, according to the mean and maximal delivered doses, 41 (43.6%) and 24 (25.5%) sextants could receive an optimal prosthesis, respectively. CONCLUSION: By determining the sites of implantation before dosimetry, the radiation oncologist could shield specified areas, potentially improving the possibilities for dental rehabilitation. The dialogue between the dentist and the radiation oncologist can improve the possibilities for implants and decrease the risk of unsafe implantation.
Preclinical safety study of a combined therapeutic bone wound dressing for osteoarticular regeneration
Laetitia Keller, Luc Pijnenburg, Ysia Idoux-Gillet, Fabien Bornert, Laila Benameur, Maryam Tabrizian, Pierrick Auvray, Philippe Rosset, Rosa María Gonzalo-Daganzo, Enrique Gómez Barrena, Luca Gentile, Nadia Benkirane-Jessel
Nature Communications, 2019, 10 (1), pp.2156. ⟨10.1038/s41467-019-10165-5⟩
Article dans une revueAbstractThe extended life expectancy and the raise of accidental trauma call for an increase of osteoarticular surgical procedures. Arthroplasty, the main clinical option to treat osteoarticular lesions, has limitations and drawbacks. In this manuscript, we test the preclinical safety of the innovative implant ARTiCAR for the treatment of osteoarticular lesions. Thanks to the combination of two advanced therapy medicinal products, a polymeric nanofibrous bone wound dressing and bone marrow-derived mesenchymal stem cells, the ARTiCAR promotes both subchondral bone and cartilage regeneration. In this work, the ARTiCAR shows 1) the feasibility in treating osteochondral defects in a large animal model, 2) the possibility to monitor non-invasively the healing process and 3) the overall safety in two animal models under GLP preclinical standards. Our data indicate the preclinical safety of ARTiCAR according to the international regulatory guidelines; the ARTiCAR could therefore undergo phase I clinical trial.
A common gesture with a rare but potentially severe complication: Re-expansion pulmonary edema following chest tube drainage
Sabrina Kepka, Laura Lemaitre, Tania Marx, Pascal Bilbault, Thibaut J. Desmettre
Respiratory Medicine Case Reports, 2019, 27, pp.100838. ⟨10.1016/j.rmcr.2019.100838⟩
Article dans une revueAbstractBackground: Primary Spontaneous Pneumothorax (PSP) is usually considered as a benign pathology occurring in young people. In about half of cases, observation only is purposed. In case of intervention, chest tube drainage remains the preponderant strategy even if no studies conclude about superiority of drainage or aspiration. Re-expansion pulmonary edema (REPE) is a rare but potentially severe complication of chest tube drainage. Risk factors are not well identified, but REPE is more frequent for patients with diabetes, younger than 40 years, with large pneumothorax, lung collapse more than one week and fast re-expansion. Case report: We report a case of a 19-year old male presenting to the Emergency Department with a first episode of PSP. He was treated by chest tube drainage with immediate suction. He developed a REPE 3 hours after chest tube drainage with suction. Conservative management and oxygen therapy led to withdrawing the chest tube 9 days later. Conclusion: For the initial management of PSP, prevention of this complication is essential. In case of risk factors, prevention consist of absence of immediate suction after chest tube drainage and suction should be reserved in case of failure of initial treatment after 24 hours. Even if chest tube drainage is a common gesture, clinical presentation of REPE must alert physicians taking care of these patients.
Hidden intra-mandibular carcinoma cuniculatum appearing in a patient with metastatic prostate cancer: a case report
Elyette Broly, Philippe Barthélémy, Saïd Ciftci, Christian Borel, Martin Broly, Catherine-Isabelle Gros, Luc Marcellin, Fabien Bornert
BMC Oral Health, 2019, 19 (1), pp.54. ⟨10.1186/s12903-019-0745-1⟩
Article dans une revueAbstractBackground: Whereas the incidence of cancers increases, overall survival of cancerous patients improves. Preventing the onset of second primary cancer is a new public health challenge and requires a special attention from organ specialists. We report a rare case of carcinoma cuniculatum in a context of metastatic prostate cancer. No case was previously described. Diagnosis delay of carcinoma cuniculatum is frequent and particularly in case of endophytic intra-osseous topography. The aim of this case report is to remind that persistent pain requires medical evaluation to rule out any possibility of second primary cancer. Case presentation: A 78-year-old patient followed for a metastatic prostate cancer had been describing neuralgic dental pain in the lower posterior left quadrant for several months. Healing delay of tooth #37 (second left mandibular molar) extraction socket in the painful region led to an intra-alveolar incisional biopsy, which showed a tumor widely invading the mandibular body. Radiologic, histopathologic and clinical elements finally concluded to an intra-osseous carcinoma cuniculatum. Duration of total treatment (oral biopsy to hemimandibulectomy) and follow up were about five months and one year respectively. Patient died before reconstruction. Conclusion: This case recalls that any persistent tooth pain affecting cancer patients requires a thorough review to exclude any secondary primary cancers or any metastasis of the oral cavity and more specifically in jawbones.
Portraying infective endocarditis: results of multinational ID-IRI study
Hakan Erdem, Edmond Puca, Yvon Ruch, Lurdes Santos, Nesrin Ghanem-Zoubi, Xavier Argemi, Yves Hansmann, Rahmet Guner, Gilda Tonziello, Jean-Philippe Mazzucotelli, Najada Como, Sukran Kose, Ayse Batirel, Asuman Inan, Necla Tulek, Abdullah Pekok, Ejaz Khan, Atilla Iyisoy, Meliha Meric-Koc, Ayse Kaya-Kalem, Pedro Martins, Imran Hasanoglu, André Silva-Pinto, Nefise Oztoprak, Raquel Duro, Fahad Almajid, Mustafa Dogan, Nicolas Dauby, Jesper Gunst, Recep Tekin, Deborah Konopnicki, Nicola Petrosillo, Ilkay Bozkurt, Jamal Wadi, Corneliu Popescu, Ilker Balkan, Safak Ozer-Balin, Tatjana Zupanc, Antonio Cascio, Irina Dumitru, Aysegul Erdem, Gulden Ersoz, Meltem Tasbakan, Oday Ajamieh, Fatma Sirmatel, Simin Florescu, Serda Gulsun, Hacer Ozkaya, Sema Sari, Selma Tosun, Meltem Avci, Yasemin Cag, Guven Celebi, Ayse Sagmak-Tartar, Sumeyra Karakus, Alper Sener, Arjeta Dedej, Serkan Oncu, Rosa del Vecchio, Derya Ozturk-Engin, Canan Agalar
European Journal of Clinical Microbiology and Infectious Diseases, 2019, 38 (9), pp.1753-1763. ⟨10.1007/s10096-019-03607-x⟩
Article dans une revueAbstractInfective endocarditis is a growing problem with many shifts due to ever-increasing comorbid illnesses, invasive procedures, and increase in the elderly. We performed this multinational study to depict definite infective endocarditis. Adult patients with definite endocarditis hospitalized between January 1, 2015, and October 1, 2018, were included from 41 hospitals in 13 countries. We included microbiological features, types and severity of the disease, complications, but excluded therapeutic parameters. A total of 867 patients were included. A total of 631 (72.8%) patients had native valve endocarditis (NVE), 214 (24.7%) patients had prosthetic valve endocarditis (PVE), 21 (2.4%) patients had pacemaker lead endocarditis, and 1 patient had catheter port endocarditis. Eighteen percent of NVE patients were hospital-acquired. PVE patients were classified as early-onset in 24.9%. A total of 385 (44.4%) patients had major embolic events, most frequently to the brain (n = 227, 26.3%). Blood cultures yielded pathogens in 766 (88.4%). In 101 (11.6%) patients, blood cultures were negative. Molecular testing of vegetations disclosed pathogens in 65 cases. Overall, 795 (91.7%) endocarditis patients had any identified pathogen. Leading pathogens (Staphylococcus aureus (n = 267, 33.6%), Streptococcus viridans (n = 149, 18.7%), enterococci (n = 128, 16.1%), coagulase-negative staphylococci (n = 92, 11.6%)) displayed substantial resistance profiles. A total of 132 (15.2%) patients had cardiac abscesses; 693 (79.9%) patients had left-sided endocarditis. Aortic (n = 394, 45.4%) and mitral valves (n = 369, 42.5%) were most frequently involved. Mortality was more common in PVE than NVE (NVE (n = 101, 16%), PVE (n = 49, 22.9%), p = 0.042).
White blood cell count and eosinopenia as valuable tools for the diagnosis of bacterial infections in the ED
Charles-Eric Lavoignet, Pierrick Le Borgne, Sylvie Chabrier, Joffrey Bidoire, Hakim Slimani, Julia Chevrolet-Lavoignet, François Lefebvre, Rania Jebri, Luc Sengler, Pascal Bilbault
European Journal of Clinical Microbiology and Infectious Diseases, 2019, 38 (8), pp.1523-1532. ⟨10.1007/s10096-019-03583-2⟩
Article dans une revueAbstractIdentifying an infection may be difficult in the ED. Neutrophilic leukocytosis is often used in the diagnosis of infection despite its lack of specificity in situations of stress. Our objective was to study the value of each parameter of the WBC count, in particular eosinopenia, to diagnose bacterial infections in the ED. We conducted a retrospective and observational study over a period of 6 months. All patients with one of the following diagnoses were eligible: pneumonia (9.9%), pyelonephritis (26.2%), prostatitis (8.4%), appendicitis (26.2%), cholecystitis (8.4%), and diverticular sigmoiditis (5%). A total of 466 infected patients were included for statistical analysis, and a control group of 466 uninfected patients was randomly selected in the same period of time. All leukocyte count parameters were significantly modified (p < 0.001) in the infected group compared with the control group. Neutrophils and total leukocytes remain the two most suitable parameters for the diagnosis of infections in the ED. Eosinopenia represented the most efficient parameter of the WBC count for the diagnosis of urinary and biliary tract infections. Deep eosinopenia presented a specificity of 94% for the diagnosis of infection. Any modification of the WBC count associated with an elevation of CRP (> 40 mg/L) or fever (> 38.5 degrees C) showed a high specificity for the diagnosis of infection. A careful analysis of the WBC count remains a valuable tool for the diagnosis of infection in the ED.
A New SLC10A7 Homozygous Missense Mutation Responsible for a Milder Phenotype of Skeletal Dysplasia With Amelogenesis Imperfecta
Virginie Laugel-Haushalter, Séverine Bär, Elise Schaefer, Corinne Stoetzel, Véronique Geoffroy, Yves Alembik, Naji Kharouf, Mathilde Huckert, Pauline Hamm, Joseph Hemmerlé, Marie-Cécile Maniere, Sylvie Friant, Hélène Dollfus, Agnès Bloch-Zupan
Frontiers in Genetics, 2019, 10, pp.504. ⟨10.3389/fgene.2019.00504⟩
Article dans une revueAbstractAmelogenesis imperfecta (AI) is a heterogeneous group of rare inherited diseases presenting with enamel defects. More than 30 genes have been reported to be involved in syndromic or non-syndromic AI and new genes are continuously discovered (Smith et al., 2017). Whole-exome sequencing was performed in a consanguineous family. The affected daughter presented with intra-uterine and postnatal growth retardation, skeletal dysplasia, macrocephaly, blue sclerae, and hypoplastic AI. We identified a homozygous missense mutation in exon 11 of SLC10A7 (NM_001300842.2: c.908C>T; p.Pro303Leu) segregating with the disease phenotype. We found that Slc10a7 transcripts were expressed in the epithelium of the developing mouse tooth, bones undergoing ossification, and in vertebrae. Our results revealed that SLC10A7 is overexpressed in patient fibroblasts. Patient cells display altered intracellular calcium localization suggesting that SLC10A7 regulates calcium trafficking. Mutations in this gene were previously reported to cause a similar syndromic phenotype, but with more severe skeletal defects (Ashikov et al., 2018;Dubail et al., 2018). Therefore, phenotypes resulting from a mutation in SLC10A7 can vary in severity. However, AI is the key feature indicative of SLC10A7 mutations in patients with skeletal dysplasia. Identifying this important phenotype will improve clinical diagnosis and patient management.
Hypotony and the Argus II retinal prosthesis: causes, prevention and management
Stanislao Rizzo, Pierre-Olivier Barale, Sarah Ayello-Scheer, Robert Devenyi, Marie-Noëlle Delyfer, Jean-François Korobelnik, Aleksandra Rachitskaya, Alex Yuan, K Jayasundera, David Zacks, James Handa, Sandra Montezuma, Dara Koozekanani, Paulo Stanga, Lyndon da Cruz, Peter Walter, Albert Augustin, Lisa Olmos de Koo, Allen Ho, Bernd Kirchhof, Paul Hahn, Lejla Vajzovic, Raymond Iezzi, David Gaucher, J Arevalo, Ninel Gregori, Peter Wiedemann, Emin Özmert, Jennifer Lim, Flavio Rezende, Suber Huang, Francesco Merlini, Uday Patel, Robert Greenberg, Sally Justus, Daniela Bacherini, Laura Cinelli, Mark Humayun
British Journal of Ophthalmology, 2019, ⟨10.1136/bjophthalmol-2019-314135⟩
Article dans une revueSurgical stabilization for multiple rib fractures: whom the benefit? - a prospective observational study
Anne Olland, Marc Puyraveau, Sophie Guinard, Joseph Seitlinger, Déborah Kadoche, Stéphanie Perrier, Stéphane Renaud, Pierre-Emmanuel Falcoz, Gilbert Massard
Journal of Thoracic Disease, 2019, 11, ⟨10.21037/jtd.2018.10.122⟩
Article dans une revueAbstractBackground: Surgical repair has demonstrated a beneficial effect on outcome for patients presenting with flail chest or with multiple rib fractures. We hypothesized that benefit on outcome parameters concerns predominantly patients being extubated within 24 hours post-operatively. Methods: We prospectively recorded all patients presenting with chest traumatism eligible for surgical repair with anticipated early extubation according to our institutional consensus (flail chest, major deformity, poor pain control, associated lesions requiring thoracotomy). We compared outcomes of patients extubated within 24 hours post-operatively to those who required prolonged ventilator support. We tested predictive factors for prolonged intubation with univariate and multivariate analysis. Results: From 2010 to 2014, 132 patients required surgical repair. Two thirds were extubated within 24 hours following surgical repair. Pneumonia was the main complication and occurred in 30.3% of all patients. Patients extubated within 24 hours following surgical repair had significantly shorter ICU stay and shorter in-hospital stay (P<0.0001 both). Pneumonia occurred significantly more often in patients with longer mechanical ventilation (over 24 hours) (P<0.0001) and the overall post-operative complications rate was higher (P=0.0001). Main independent risk factors for delayed extubation were bilateral chest rib fractures and initially associated pneumothorax. Conclusions: We conclude that patients extubated within 24 hours after repair have an improved outcome with reduced complication rate and shorter hospital stay. The initial extent of the trauma is an important risk factor for delayed extubation and high complication rate despite surgical stabilization.
Pulmonary Embolism and Coexisting Deep Vein Thrombosis: A Detrimental Association?
Elena-Mihaela Cordeanu, Hélène Lambach, Marie Heitz, Julie Di Cesare, Corina Mirea, Alix-Marie Faller, Anne-Cécile Cavaro, Anne-Sophie Frantz, Sebastien Gaertner, Valérie Schini-Kerth, Dominique Stephan
Journal of Clinical Medicine, 2019, 8 (6), ⟨10.3390/jcm8060899⟩
Article dans une revueAbstractBackground: The prognostic significance of coexisting deep vein thrombosis (DVT) in acute pulmonary embolism (PE) is controversial. This study aimed to provide routine patient care data on the impact of this association on PE severity and 3-month outcomes in a population presenting with symptomatic venous thromboembolism (VTE) from the REMOTEV registry. Methods and Results: REMOTEV is a prospective, non-interventional study of patients with acute symptomatic VTE, treated with direct oral anticoagulants (DOACs) or standard anticoagulation (vitamin K antagonists (VKA) or parenteral heparin/fondaparinux alone) for at least 3 months. From 1 November 2013 to 28 February 2018, among 1241 consecutive patients included, 1192 had a follow-up of at least 3 months and, among them, 1037 had PE with (727) or without DVT (310). The median age was 69 (55-80, 25th-75th percentiles). Patients with PE-associated DVT had more severe forms of PE (p < 0.0001) and, when DVT was present, proximal location was significantly correlated to PE severity (p < 0.01). However, no difference in all-cause mortality rate (hazard ratio (HR) 1.36 (CI 95% 0.69-2.92)), nor in the composite criterion of all-cause mortality and recurrence rate (HR 1.56 (CI 95% 0.83-3.10)) was noted at 3 months of follow-up. Conclusion: In REMOTEV, coexisting DVT was associated with a higher severity of PE, with no impact on short-term prognosis.
Back pain prevalence, intensity and associated factors in French dentists: a national study among 1004 professionals
Gabriel Fernandez de Grado, Julien Denni, Anne-Marie Musset, Damien Offner
European Spine Journal, 2019, 28 (11), pp.2510-2516. ⟨10.1007/s00586-019-06080-4⟩
Article dans une revueAbstractObjectives Back pains are the most frequent musculoskeletal disorders among dentists, exposed to many work-related risk factors. We aimed to assess the prevalence and intensity of back pains as well as the impact of some work behaviors among a large sample of dentists. Materials and methods Data from 1004 French dentists were collected via an Internet questionnaire. Neck, upper back and lower back pains prevalence, intensity (0-10 scale) and consequences on work were studied, as well as sex, age, years of practice, working position, type of seat, stretching on work days. Results Dentists were 77.9% to report chronic back pains, with intensity from 3.9 to 4.3 according to location. Women reported more frequent and intense pains than men in neck and upper back (OR 1.5). Age and years of practice were associated with more intense pains (OR up to 3.9), dentists alternating standing and sitting positions reported more frequent and more intense pains in upper and lower back (OR up to 1.5) than those with a fixed position, be it sitting or standing. Conclusions Prevalence and intensity of back pain are important among dentists and increase greatly over working life. Preventive methods such as ergonomics exist and awareness should be raised among dentists and dental student. Graphic abstract These slides can be retrieved under Electronic Supplementary Material. [GRAPHICS] .
Progression of left anterior descending artery dissection due to stent implantation for spontaneous coronary artery dissection of left circumflex artery: a case report
Kensuke Matsushita, Jessica Ristorto, Olivier Morel, Patrick Ohlmann
European Heart Journal. Case Reports, 2019, 3 (4), pp.1 - 6. ⟨10.1093/ehjcr/ytz173⟩
Article dans une revueAbstractBackground: Spontaneous coronary artery dissection (SCAD) is a rare disease that predominantly affects woman. Percutaneous coronary intervention (PCI) is recommended only in patients with ongoing ischaemia because it carries a high risk of procedural complications in SCAD patients. Case summary: A 51-year-old woman was admitted to our institution owing to severe chest pain. Coronary angiography showed a diffuse narrowing and radiolucent luminal flap which runs parallel to the vessel wall in the proximal left circumflex coronary artery and SCAD was diagnosed. After PCI was undertaken, optical coherence tomography disclosed a circular haematoma at the stent distal segment and an intimal tear at the distal left main coronary artery. A conservative approach was decided owing to patient stability without evidence of ongoing ischaemia and normal coronary flow. Thirty minutes later, the patient started to complain of chest pain with the ST-segment elevation in leads I, aVL, and V2–3. Coronary angiography demonstrated a total occlusion of the second diagonal brunch and double lumen morphology at the proximal-potion of left anterior descending with TIMI2 distal flow suggesting the extension of coronary dissection. Optical coherence tomography imaging revealed that the entry door of the dissection was located where the small intimal tear was found. Percutaneous coronary intervention was successfully performed, and the patient was discharged without any complication. Discussion: Although the underlying mechanism of recurrent SCAD remain largely unknown, our case suggests that the residual inlet of the dissection may associate with the extension of the coronary dissection.
Impact of Antithrombotic Regimen and Platelet Inhibition Extent on Leaflet Thrombosis Detected by Cardiac MDCT after Transcatheter Aortic Valve Replacement
Charline Jimenez, Mickaël Ohana, Benjamin Marchandot, Marion Kibler, Adrien Carmona, Marilou Peillex, Joe Heger, Antonin Trimaille, Kensuke Matsushita, Antje Reydel, Sebastien Hess, Laurence Jesel, Patrick Ohlmann, Olivier Morel
Journal of Clinical Medicine, 2019, ⟨10.3390/jcm8040506⟩
Article dans une revueAbstractThe impact of antithrombotic regimen and platelet inhibition extent on subclinical leaflet thrombosis (SLT) detected by cardiac multidetector computed tomography (MDCT) after transcatheter aortic valve replacement (TAVR) is not well established. Hypoattenuation affecting motion (HAM) has been proposed as a surrogate marker of SLT, and is characterized by hypoattenuated leaflet thickening (HALT) and concomitant reduction in leaflet motion (RELM). We sought to investigate (i) the prevalence of HAM and HALT after TAVR detected by MDCT, (ii) the predictors of SLT, (iii) the impact of oral anticoagulant (OAC) and platelet inhibition extent assessed by platelet reactivity index vasodilator stimulated phosphoprotein (PRI-VASP) and closure time adenosine diphosphate (CT-ADP) on SLT. Of 187 consecutive patients who underwent TAVR from 1 August 2017 to 31 March 2018, 90 of them had cardiac CT at relevant follow-up. Clinical, biological, echocardiographic, procedural characteristics and treatments were collected before, at discharge, and 1 year after TAVR. P2Y12 platelet inhibition extent and primary haemostasis disorders were investigated using platelet PRI-VASP and CT-ADP point-of-care assays. Eighty-five post-TAVR CTs out of 90 were ranked for clarity and assessed with sufficient diagnostic quality. HAM was evidenced in 13 patients (15.3%) and HALT in 30 patients (35%). Procedural characteristics, including aortic valve calcium score, annulus size, or procedural heparin regimens, were equivalent between groups. Likewise, no impact of P2Y12 inhibition (PRI-VASP) nor primary haemostasis disorders (CT-ADP) on SLT could be evidenced. No impact of SLT on valve deterioration evaluated by transthoracic echocardiography (TTE) and clinical events could be established at 12 months follow-up. By multivariate analysis, lack of oral anticoagulant therapy at discharge (HR 12.130 CI 95% (1.394-150.582); p = 0.028) and higher haemoglobin levels were evidenced as the sole independent predictors of SLT. In four patients with HAM, MDCT follow-up was obtained after initiation of OAC therapy and showed a complete regression of HAM. SLT was evidenced in a sizeable proportion of patients treated by TAVR and was mainly determined by the lack of oral anticoagulant therapy. Conversely, no impact of platelet inhibition extent on SLT could be evidenced.
Suivi clinique après implantation d’un stent couvert dans l’artère fémorale commune au décours immédiat d’une complication vasculaire per-TAVI = [Common femoral artery bailout stenting with covered stent graft due to TAVR vascular complication: Clinical long term follow-up]
E. Drouelle, Fabien de Poli, P. Couppie, S. Uhry, H. Heyer, Olivier Morel, Patrick Ohlmann, Sébastien Hess, Marion Kibler, Pierre Leddet
Annales de cardiologie et d'angeiologie, 2019, 68 (5), pp.316-324. ⟨10.1016/j.ancard.2019.08.007⟩
Article dans une revueAbstractBACKGROUND: Vascular complications are frequent in the context of transcatheter aortic valve replacement and may require the implantation of a covered stent graft in the common femforal artery. However, common femoral artery is considered to be at high risk of stent fracture or occlusion due to high mobility of the hip joint. PATIENTS AND METHODS: We analyzed medical records of patients with transcatheter aortic valve replacement related vascular complications between 2015 and 2018, treated with commom femoral artery transluminal angioplasty or surgery. Vascular complications or suspect symptoms were followed up by phone calls. RESULTS: Among 552 patients, 43 patients were included. Twelve (11.6 %) were managed by prolonged balloon inflation, 5 (11.6 %) by first line surgery and 26 (60.4 %) by the implantation of a covered stent graft. Among the latter group, the covered stent graft was efficient in 24 patients (92.3 %). The median follow-up was 430 days [3-1499]. The first-line surgery group had a higher risk of red blood cell transfusion and all causes mortality. At follow-up, no patient had suspicious symptoms of vascular covered stent complication. Four patients (9.3 %) had US-doppler or CT vascular imaging at follow-up, showing no evidence of stent fracture or occlusion. CONCLUSION: In our study, the implantation of a covered stent graft in the common femoral artery was an efficient and safe strategy for the management of transcatheter aortic valve replacement related vascular complications.
Anatomical Resections Improve Survival Following Lung Metastasectomy of Colorectal Cancer Harboring KRAS Mutations
Stéphane Renaud, Joseph Seitlinger, Yaseen Al Lawati, Francesco Guerrera, Pierre-Emmanuel Falcoz, Gilbert Massard, Lorenzo Ferri, Jonathan Spicer
Annals of Surgery, 2019, 270 (6), pp.1170-1177. ⟨10.1097/SLA.0000000000002829⟩
Article dans une revueIdentification of a Kavain Analog with Efficient Anti-inflammatory Effects
Olivier Huck, Xiaxian Han, Hannah Mulhall, Iryna Gumenchuk, Bin Cai, James Panek, Radha Iyer, Salomon Amar
Scientific Reports, 2019, 9 (1), pp.12940. ⟨10.1038/s41598-019-49383-8⟩
Article dans une revueAbstractKavain, a compound derived from Piper methysticum, has demonstrated anti-inflammatory properties. To optimize its drug properties, identification and development of new kavain-derived compounds was undertaken. A focused library of analogs was synthesized and their effects on Porphyromonas gingivalis (P. gingivalis) elicited inflammation were evaluated in vitro and in vivo. The library contained cyclohexenones (5,5-dimethyl substituted cyclohexenones) substituted with a benzoate derivative at the 3-position of the cyclohexanone. The most promising analog identifed was a methylated derivative of kavain, Kava-205Me (5,5-dimethyl-3-oxocyclohex-1-en-1-yl 4-methylbenzoate.) In an in vitro assay of anti-inflammatory effects, murine macrophages (BMM) and THP-1 cells were infected with P. gingivalis (MOI = 20:1) and a panel of cytokines were measured. Both cell types treated with Kava-205Me (10 to 200 μg/ml) showed significantly and dose-dependently reduced TNF-α secretion induced by P. gingivalis. In BMM, Kava-205Me also reduced secretion of other cytokines involved in the early phase of inflammation, including IL-12, eotaxin, RANTES, IL-10 and interferon-γ (p < 0.05). In vivo, in an acute model of P. gingivalis-induced calvarial destruction, administration of Kava-205Me significantly improved the rate of healing associated with reduced soft tissue inflammation and osteoclast activation. In an infective arthritis murine model induced by injection of collagen-antibody (ArthriomAb) + P. gingivalis, administration of Kava-205Me was able to reduce efficiently paw swelling and joint destruction. These results highlight the strong anti-inflammatory properties of Kava-205Me and strengthen the interest of testing such compounds in the management of P. gingivalis elicited inflammation, especially in the management of periodontitis.
Atypical Right Pulmonary Artery Dissection Complicating Severe Blunt Chest Trauma
Julie Felten, Kevin Cogne, Cyrielle Fischbach-Boulanger, Pierre-Emmanuel Falcoz, Alain Meyer, Anne Olland, Julien Pottecher
Seminars in Thoracic and Cardiovascular Surgery, 2019, 31 (1), pp.137 - 139. ⟨10.1053/j.semtcvs.2018.10.018⟩
Article dans une revueAbstractPulmonary artery dissection is a rare albeit life-threatening event and it mostly occurs as the spontaneous rupture of pulmonary artery aneurysm complicating chronic pulmonary hypertension. Here, we describe a case of blunt traumatic pulmonary artery dissection.
Management of a superinfected pyoderma gangrenosum after pacemaker implant
Halim Marzak, Jean-Jacques von Hunolstein, Dan Lipsker, Michel Chauvin, Olivier Morel, Laurence Jesel
HeartRhythm Case Reports, 2019, 5 (2), pp.63 - 65. ⟨10.1016/j.hrcr.2017.12.006⟩
Article dans une revueCoagulopathy and sepsis
Charlotte Poussardin, Ferhat Meziani, Julie Helms
Anesthésie & Réanimation, 2019, 5 (4), pp.322-326. ⟨10.1016/j.anrea.2019.03.001⟩
Article dans une revueAbstractSepsis is responsible for an activation of coagulation. This coagulation activation contributes to host defence against pathogens, as well as the immune pathways do. It is called immunothrombosis. When regulating mechanisms are overwhelmed, an excessive activation of coagulation can lead to disseminated intravascular coagulopathy (DIC), which is characterised by an excess of thrombin and a delayed fibrinolysis. Septic coagulopathy leads to formation of disseminated microthrombi responsible for multiple organ failure associated with increased mortality. The diagnosis of DIC is based on a range of clinical and biological arguments that coincide with a compatible medical history and can be established with different scores. Those current scores nevertheless fail to diagnose early DIC and they cannot differentiate the different states of coagulation activation. Anticoagulation in septic patients with DIC is debated due to the potential role of coagulation in innate immunity and because the difficulty to monitor it. The type of anticoagulant, its dose and the time of its introduction are not precisely determined yet, but it might be beneficial to set up anticoagulation in septic patients with DIC.
In vitro Assessment of Peri-implantitis Treatment Procedures: A Review
Merve Benli, Catherine Petit, Henri Tenenbaum, Olivier Huck
The Open Dentistry Journal, 2019, 13, pp.267-273. ⟨10.2174/1874210601913010267⟩
Article dans une revueAbstractBackground: The prevalence of peri-implantitis is increasing continuously and such a biological complication significantly decreases implant survival and success. Although various treatment modalities have been identified for peri-implantitis, no completely efficient method has yet been established. Objective: The aim of this review was to evaluate the scientific literature regarding the in vitro effects of peri-implantitis treatment. Methods: A review of the literature was performed by using Google Scholar, PubMed/MEDLINE and Science Direct databases. In vitro studies on peri-implantitis treatment modalities were selected. The search strategy identified 57 eligible studies. After selection, 21 articles met all the inclusion criteria and were included in the present review. Results: Included in vitro studies evaluated different types of peri-implantitis treatment modalities such as mechanical, chemical, combination and laser therapies. Combination therapies with the aid of adjuvants were found to be more effective compared to the studies that used only one type of treatment modality. Laser systems were also tested and displayed interesting results in terms of surface decontamination with a variability associated with selected parameters. Conclusion: This review Was performed to evaluate the efficacy of the treatment modalities used for peri-implantitis in vitro. Although there are various effective treatment methods, none has been completely successful in removing the biofilms related to peri-implantitis. The findings imply the need for further studies to develop more effective antimicrobial treatment procedures.
Decision criteria influencing the therapeutic approach to invasive cervical resorption: a case series.
Claire Ehlinger, Estelle Ginies, Fabien Bornert, Sophie Bahi-Gross, Mathieu Schmittbuhl, Maryline Minoux
Quintessence international (Berlin, Germany : 1985), 2019, 50 (6), ⟨10.3290/j.qi.a42479⟩
Article dans une revueAbstractInvasive cervical resorption (ICR) is a dental lesion starting in the cervical region and involving the loss of dental hard tissue as a result of odontoclastic action. Due to its localization and invasive pattern, this process represents a challenging clinical situation. When feasible, the major aim of an ICR treatment is to completely remove the pathologic tissue (specifically at the entry point of the lesion) and to seal the resulting defect, without compromising tooth rehabilitation. In this context, choosing how to access the resorptive lacuna is essential. Two main options have been described in the literature: an external approach, requiring the surgical exposure of the resorptive lacuna, and an internal approach, taking advantage of the endodontic access cavity. However, there are no guidelines that indicate which approach to choose for the treatment of an ICR. This article is based on four clinical cases. It aims to provide specific clinical and radiologic features that should be considered in order to take the most appropriate decision, when choosing between the internal and the external approaches. It is proposed to base the therapeutic strategy on the accessibility and the size of the portal of entry of the lesion. When the entry point is wide, its extension along the root must also be taken into account. Other important parameters are the circumferential and vertical extents of the lesion in the radicular dentin. Although it is not a determining factor, the pulpal involvement of the lesion can also be considered.
Organized Management of Diabetes Mellitus in Lung Transplantation: Study of Glycemic Control and Patient Survival in a Single Center
Marianne Riou, Benjamin Renaud-Picard, Marion Munch, François Lefebvre, Philippe Baltzinger, Michele Porzio, Sandrine Hirschi, Tristan Degot, Armelle Schuller, Nicola Santelmo, Jeremie Reeb, Anne Olland, Pierre-Emmanuel Falcoz, Gilbert Massard, Laurence Kessler, Romain Kessler
Transplantation Proceedings, 2019, 51 (10), pp.3375-3384. ⟨10.1016/j.transproceed.2019.07.019⟩
Article dans une revueAbstractObjective. To study patient survival and glycemic control before and after lung transplantation (LTx) according to the diabetes status in patients submitted to an organized management of diabetes mellitus (DM) at the Strasbourg University Hospital, France. Material and Methods. Two hundred and sixty-seven LTx recipients were included retrospectively and analyzed according to diabetes status: pretransplant diabetes, new-onset diabetes mellitus after transplant (NODAT) or no diabetes. Organized DM management was coordinated by a diabetologist trained in DM management before and after transplantation and included pretransplant screening, a close monitoring of glycemia after transplant and optimized treatment before and after LTx. Results. DM was well-controlled after transplantation: mean glycosylated hemoglobin and fasting blood glucose levels after LTx were 5.8 +/- 0.2% and 5.4 +/- 0.1 mmol/L respectively, in pretransplant DM patients and 5.7 +/- 0.1% and 5.6 +/- 0.2 mmol/L respectively, in NODAT patients. The overall median survival time was 8.3 +/- 1.9 years. Pretransplant DM increased the risk of mortality (1.82-fold increase; 95% confidence interval, 1.08-3.06; P =.02) in LTx recipients. Conclusions. Organized management of diabetes achieved very satisfactory glycemic control in both pretransplant DM and NODAT patients. However, no specific protocols have been created for managing DM following LTx. As DM continues to become an increasing comorbidity in LTx, there exist a significant need of studies in this area.
Outcomes of patients with drug-resistant-tuberculosis treated with bedaquiline-containing regimens and undergoing adjunctive surgery
Sergey Borisov, Lia d'Ambrosio, Rosella Centis, Simon Tiberi, Keertan Dheda, Jan-Willem Alffenaar, Rohit Amale, Evgeny Belilowski, Judith Bruchfeld, Barbara Canneto, Justin Denholm, Raquel Duarte, Aliasgar Esmail, Alex Filippov, Lina Davies Forsman, Mina Gaga, Shashank Ganatra, Gaida Anastasia Igorevna, Barbara Lazaro Mastrapa, Vinicio Manfrin, Selene Manga, Andrey Maryandyshev, Gilbert Massard, Pablo González Montaner, Jai Mullerpattan, Domingo Juan Palmero, Agostina Pontarelli, Apostolos Papavasileiou, Emanuele Pontali, Rodolfo Romero Leyet, Antonio Spanevello, Zarir Farokh Udwadia, Pietro Viggiani, Dina Visca, Giovanni Sotgiu, Giovanni Battista Migliori
Journal of Infection, 2019, 78 (1), pp.35-39. ⟨10.1016/j.jinf.2018.08.003⟩
Article dans une revue[Primary failure of eruption: a French prospective survey among the orthodontists from the Grand Est and Bourgogne Franche-Comté regions] Défauts primaires d’éruption : état des lieux auprès des spécialistes en orthopédie dento-faciale des régions Grand Est et Bourgogne Franche-Comté
Marion Strub, Elie Kramer, Marie Cecile Maniere, Delphine Wagner
L' Orthodontie francaise, 2019, 90 (2), pp.149-159. ⟨10.1051/orthodfr/2019013⟩
Article dans une revueAbstractRésumé Introduction : Les défauts primaires d’éruption (DPE) correspondent à l’échec partiel ou total d’éruption d’une ou de plusieurs dents, sans obstacle mécanique; des formes isolées et syndromiques de cette pathologie existent. Ils résultent d’une anomalie des processus d’éruption qui peut toucher les dents temporaires et/ou les dents permanentes. Les molaires sont les principales dents atteintes, provoquant des infraclusions postérieures. Pathologie rare, les DPE sont essentiellement pris en charge par les spécialistes en orthopédie dento-faciale (ODF). Les tentatives de traction chirurgico-orthodontiques se soldent généralement par un échec. Matériels et méthodes : Le but de ce travail était d’évaluer, par une enquête prospective basée sur un questionnaire anonyme, les connaissances des orthodontistes et la complexité de la prise en charge de cette anomalie de l’éruption. Les praticiens des régions Grand Est et Bourgogne-Franche-Comté ont été sollicités. Résultats : Le taux de participation était de 33,5 %. Les participants ont principalement obtenu leur qualification entre 1980 et 2009 (80 %), via le Certificat d’Études Cliniques Spécialisées Mention Orthodontie (CECSMO) (87 %). Quatre-vingt-six pour cent d’entre eux connaissaient les DPE mais 20 % seulement l’implication possible du gène PTHR1 (Parathyroid Hormone Receptor 1). Le vaste panel de thérapeutiques envisagées et les faibles taux de satisfaction soulignent les difficultés rencontrées par les praticiens. Discussion : La variabilité phénotypique complique le diagnostic et rend difficile toute systématisation de la prise en charge. Conclusion : De nouveaux projets de recherche clinique, notamment en matière de diagnostic moléculaire, amélioreront les connaissances sur les corrélations génotype-phénotype, et conditionneront éventuellement la prise en charge thérapeutique. Abstract Introduction: Primary failure of eruption (PFE) can be defined as the partial or complete failure of eruption of at least one posterior tooth, without any mechanical obstacle; isolated and syndromic forms exist. PFE results from an abnormal dental eruption process that can affect temporary teeth and / or permanent teeth. Molars are the main affected teeth, inducing posterior infraclusions. Orthodontists are the specialists most often concerned by this rare pathology. Unsuccessful orthodontic-surgical traction therapies are commonly reported. Materials and Methods: The aim of our study using a prospective survey was to evaluate the level of knowledge reported by the orthodontists and the therapeutic difficulties they reported. An anonymous questionnaire was submitted to practitioners practicing in north-eastern France (Grand Est and Bourgogne-Franche-Comté regions). Results: The participation rate was 33.5%. In France, until 2015, specialization in orthodontics was obtained thanks to a local qualification, the Certificat d’Etudes Cliniques Spéciales – Mention Orthodontie (CECSMO), which has now been replaced by specialization following a national ranking competition. Most respondents obtained their qualification between 1980 and 2009 (80%), via the CECSMO (87%). Eighty-six per cent were aware of PFE but only 20% of them knew that PTHR1 (Parathyroid Hormone Receptor 1) gene could be involved in this pathology. The wide range of proposed therapies and the variable satisfaction rates highlight the difficulties encountered by practitioners. Discussion: Phenotypic variability complicates the diagnosis and makes any therapeutic systematization uncertain. Conclusion: New clinical research projects, particularly in the field of molecular diagnosis, may improve understanding of genotype-phenotype correlations, and may potentially pilot therapeutic management.
Safety and efficacy of the rSh28GST urinary schistosomiasis vaccine: A phase 3 randomized, controlled trial in Senegalese children
Gilles Riveau, Anne-Marie Schacht, Jean-Pierre Dompnier, Dominique Deplanque, Modou Seck, Nawal Waucquier, Simon Senghor, Delphine Delcroix-Genete, Emmanuel Hermann, Noureddine Idris-Khodja, Claire Levy-Marchal, Monique Capron, André Capron
PLoS Neglected Tropical Diseases, 2018, 12 (12), pp.e0006968. ⟨10.1371/journal.pntd.0006968⟩
Article dans une revueAbstractBACKGROUND: Urinary schistosomiasis, the result of infection by Schistosoma haematobium (Sh), remains a major global health concern. A schistosome vaccine could represent a breakthrough in schistosomiasis control strategies, which are presently based on treatment with praziquantel (PZQ). We report the safety and efficacy of the vaccine candidate recombinant 28-kDa glutathione S-transferase of Sh (rSh28GST) designated as Bilhvax, in a phase 3 trial conducted in Senegal. METHODS AND FINDINGS: After clearance of their ongoing schistosomiasis infection with two doses of PZQ, 250 children aged 6-9 years were randomized to receive three subcutaneous injections of either rSh28GST/Alhydrogel (Bilhvax group) or Alhydrogel alone (control group) at week 0 (W0), W4, and W8 and then a booster at W52 (one year after the first injection). PZQ treatment was given at W44, according to previous phase 2 results. The primary endpoint of the analysis was efficacy, evaluated as a delay of recurrence of urinary schistosomiasis, defined by a microhematuria associated with at least one living Sh egg in urine from baseline to W152. During the 152-week follow-up period, there was no difference between study arms in the incidence of serious adverse events. The median follow-up time for subjects without recurrence was 22.9 months for the Bilhvax group and 18.8 months for the control group (log-rank p = 0.27). At W152, 108 children had experienced at least one recurrence in the Bilhvax group versus 112 in the control group. Specific immunoglobulin (Ig)G1, IgG2, and IgG4, but not IgG3 or IgA titers, were increased in the vaccine group. CONCLUSIONS: While Bilhvax was immunogenic and well tolerated by infected children, a sufficient efficacy was not reached. The lack of effect may be the result of several factors, including interference by individual PZQ treatments administered each time a child was found infected, or the chosen vaccine-injection regimen favoring blocking IgG4 rather than protective IgG3 antibodies. These observations contrasting with results obtained in experimental models will help in the design of future trials. TRIAL REGISTRATION: ClinicalTrials.gov NCT 00870649.
An aqueous extract of the Anogeissus leiocarpus bark (AEAL) induces the endothelium-dependent relaxation of porcine coronary artery rings involving predominantly nitric oxide
Lazare Belemnaba, Sylvin Ouédraogo, Mathieu Nitiéma, Thierry Chataigneau, Innocent Pierre Guissou, Valerie Schini-Kerth, Bernard Bucher, Cyril Auger
Journal of Basic and Clinical Physiology and Pharmacology, 2018, 29 (6), pp.599-608. ⟨10.1515/jbcpp-2017-0084⟩
Article dans une revueEffect of Human Recombinant Alkaline Phosphatase on 7-Day Creatinine Clearance in Patients With Sepsis-Associated Acute Kidney Injury: A Randomized Clinical Trial
Peter Pickkers, Ravindra L. Mehta, Patrick T. Murray, Michael Joannidis, Bruce A. Molitoris, John A. Kellum, Mirjam Bachler, Eric A. J. Hoste, Oscar Hoiting, Kenneth Krell, Marlies Ostermann, Wim Rozendaal, Miia Valkonen, David Brealey, Albertus Beishuizen, Ferhat Meziani, Raghavan Murugan, Hilde de Geus, Didier Payen, Erik van den Berg, Jacques Arend
Journal of the American Medical Association, 2018, 320 (19), pp.1998-2009. ⟨10.1001/jama.2018.14283⟩
Article dans une revueAbstractImportance: Sepsis-associated acute kidney injury (AKI) adversely affects long-term kidney outcomes and survival. Administration of the detoxifying enzyme alkaline phosphatase may improve kidney function and survival. Objective: To determine the optimal therapeutic dose, effect on kidney function, and adverse effects of a human recombinant alkaline phosphatase in patients who are critically ill with sepsis-associated AKI. Design, Setting, and Participants: The STOP-AKI trial was an international (53 recruiting sites), randomized, double-blind, placebo-controlled, dose-finding, adaptive phase 2a/2b study in 301 adult patients admitted to the intensive care unit with a diagnosis of sepsis and AKI. Patients were enrolled between December 2014 and May 2017, and follow-up was conducted for 90 days. The final date of follow-up was August 14, 2017. Interventions: In the intention-to-treat analysis, in part 1 of the trial, patients were randomized to receive recombinant alkaline phosphatase in a dosage of 0.4 mg/kg (n = 31), 0.8 mg/kg (n = 32), or 1.6 mg/kg (n = 29) or placebo (n = 30), once daily for 3 days, to establish the optimal dose. The optimal dose was identified as 1.6 mg/kg based on modeling approaches and adverse events. In part 2, 1.6 mg/kg (n = 82) was compared with placebo (n = 86). Main Outcomes and Measures: The primary end point was the time-corrected area under the curve of the endogenous creatinine clearance for days 1 through 7, divided by 7 to provide a mean daily creatinine clearance (AUC1-7 ECC). Incidence of fatal and nonfatal (serious) adverse events ([S]AEs) was also determined. Results: Overall, 301 patients were enrolled (men, 70.7%; median age, 67 years [interquartile range {IQR}, 59-73]). From day 1 to day 7, median ECC increased from 26.0 mL/min (IQR, 8.8 to 59.5) to 65.4 mL/min (IQR, 26.7 to 115.4) in the recombinant alkaline phosphatase 1.6-mg/kg group vs from 35.9 mL/min (IQR, 12.2 to 82.9) to 61.9 mL/min (IQR, 22.7 to 115.2) in the placebo group (absolute difference, 9.5 mL/min [95% CI, -23.9 to 25.5]; P = .47). Fatal adverse events occurred in 26.3% of patients in the 0.4-mg/kg recombinant alkaline phosphatase group; 17.1% in the 0.8-mg/kg group, 17.4% in the 1.6-mg/kg group, and 29.5% in the placebo group. Rates of nonfatal SAEs were 21.0% for the 0.4-mg/kg recombinant alkaline phosphatase group, 14.3% for the 0.8-mg/kg group, 25.7% for the 1.6-mg/kg group, and 20.5% for the placebo group. Conclusions and Relevance: Among patients who were critically ill with sepsis-associated acute kidney injury, human recombinant alkaline phosphatase compared with placebo did not significantly improve short-term kidney function. Further research is necessary to assess other clinical outcomes. Trial Registration: ClinicalTrials.gov Identifier: NCT02182440.
Targeting a Gpcr, Prokineticin Receptor-1, Protects Heart Against Doxorubicin-Mediated Cardiotoxicity
Canan G Nebigil, Adeline Gasser, Marine Charavin, Brigitte Escoubet, Anais Audebrand, Michael W Chan, Daniela Cardinale, Laurent Desaubry
Circulation, 2018, 138
Article dans une revuePerformance of Doppler-based resistive index and semi-quantitative renal perfusion in predicting persistent AKI: results of a prospective multicenter study
Michael Darmon, Aurelie Bourmaud, Marie Reynaud, Stéphane Rouleau, Ferhat Meziani, Alexandra Boivin, Mourad Benyamina, François Vincent, Alexandre Lautrette, Christophe Leroy, Yves Cohen, Matthieu Legrand, Jérôme Morel, Jeremy Terreaux, David Schnell
Intensive Care Medicine, 2018, 44 (11), pp.1904-1913. ⟨10.1007/s00134-018-5386-3⟩
Article dans une revueKRAS-specific Amino Acid Substitutions are Associated With Different Responses to Chemotherapy in Advanced Non-small-cell Lung Cancer
Stéphane Renaud, Francesco Guerrera, Joseph Seitlinger, Jérémie Reeb, Anne-Claire Voegeli, Michèle Legrain, Bertrand Mennecier, Nicola Santelmo, Pierre-Emmanuel Falcoz, Elisabeth Quoix, Marie Pierre Chenard, Noëlle Weingertner, Michele Beau-Faller, Gilbert Massard
Clinical lung cancer, 2018, 19 (6), ⟨10.1016/j.cllc.2018.08.005⟩
Article dans une revueAbstractBACKGROUND: Emerging data highlight different clinical behaviors according to KRAS amino acid substitutions (AASs) in patients with non-small-cell lung cancer (NSCLC). We aimed to evaluate whether different KRAS AASs were associated with different responses to chemotherapy. PATIENTS AND METHODS: We retrospectively reviewed data from 1190 patients with KRAS mutations who underwent first-line platinum-based chemotherapy for stage IV NSCLC. The response to different chemotherapy regimens was evaluated using the Response Evaluation Criteria In Solid Tumors criteria (v 1.1). Overall survival and time to progression (TTP) were secondary endpoints. RESULTS: Taxane was associated with the best response in the entire cohort (odds ratio, 2.52; 95% confidence interval [CI], 1.82-3.48; P < .001), especially in G12V patients (odds ratio, 2.15; 95% CI, 1.05-4.41; P = .036). Taxane was associated with improved TTP in the entire cohort (hazard ratio [HR], 0.31; 95% CI, 0.26-0.38; P < .001), especially in G13D patients (HR, 0.47; 95% CI, 0.22-1.01; P = .054). Pemetrexed was associated with the worst TTP in the entire cohort, particularly in G12V patients, who had the worst response rates (HR, 0.55; 95% CI, 0.30-0.99; P = .049). No impact on overall survival was observed according to different chemotherapy regimens and AASs. CONCLUSION: KRAS-specific AAS appears to induce different responses to chemotherapy regimens after first-line platinum-based chemotherapy in advanced NSCLC.
Anti-tumour effect of low molecular weight heparin in localised lung cancer: a phase III clinical trial
Guy Meyer, Benjamin Besse, Hélène Doubre, Anaïs Charles-Nelson, Sandro Aquilanti, Armine Izadifar, Reza Azarian, Isabelle Monnet, Corinne Lamour, Renaud Descourt, Gérard Oliviero, Laurent Taillade, Christos Chouaid, Frederique Giraud, Pierre-Emmanuel Falcoz, Marie-Pierre Revel, Virginie Westeel, Adrien Dixmier, Jean Tredaniel, Stéphanie Dehette, Chantal Decroisette, Alain Prevost, Eric Pichon, Elizabeth Fabre, Jean-Charles Soria, Sylvie Friard, Jean-Baptiste Stern, Laurence Jabot, Georges Dennewald, Gérard Pavy, Patrick Petitpretz, Jean-Marc Tourani, Marco Alifano, Gilles Chatellier, Philippe Girard
European Respiratory Journal, 2018, 52 (4), pp.1801220. ⟨10.1183/13993003.01220-2018⟩
Article dans une revueAbstractThe anti-tumour and anti-metastatic properties of heparins have not been tested in patients with early stage cancer. Whether adjuvant low molecular weight heparin (LMWH) tinzaparin impacts the survival of patients with resected non-small cell lung cancer (NSCLC) was investigated. Patients with completely resected stage I, II or IIIA NSCLC were randomly allocated to receive subcutaneous tinzaparin 100 IU·kg −1 once a day for 12 weeks or no treatment in addition to standard of care. The trial was open-label with blinded central adjudication of study outcomes. The primary outcome was overall survival. In 549 patients randomised to tinzaparin (n=269) or control (n=280), mean± sd age was 61.6±8.9 years, 190 (34.6%) patients had stage II−III disease, and 220 (40.1%) patients received adjuvant chemotherapy. Median follow-up was 5.7 years. There was no significant difference in overall survival between groups (hazard ratio (HR) 1.24, 95% CI 0.92–1.68; p=0.17). There was no difference in the cumulative incidence of recurrence between groups (subdistribution HR 0.94, 95% CI 0.68–1.30; p=0.70). Adjuvant tinzaparin had no detectable impact on overall and recurrence-free survival of patients with completely resected stage I−IIIA NSCLC. These results do not support further clinical evaluation of LMWHs as anti-tumour agents.
Porphyromonas gingivalis bypasses epithelial barrier and modulates fibroblastic inflammatory response in an in vitro 3D spheroid model
Isaac Maximiliano Bugueno, Fareeha Batool, Laetitia Keller, Sabine Kuchler-Bopp, Nadia Benkirane-Jessel, Olivier Huck
Scientific Reports, 2018, 8 (1), pp.14914. ⟨10.1038/s41598-018-33267-4⟩
Article dans une revueL’enseignement de la santé publique en odontologie : les enjeux d’un diplôme d’études spécialisées (DES)
Damien Offner, Camille Inquimbert, Jean-Noël Vergnes, Olivier Hamel
Ethics, Medicine and Public Health, 2018, 7, pp.7-12. ⟨10.1016/j.jemep.2018.08.002⟩
Article dans une revueAbstractL’enseignement de la santé publique regroupe diverses disciplines en lien intelligent, tournées vers une approche populationnelle et une conscientisation de la « vie non technique » d’un cabinet dentaire et de la pratique de la chirurgie dentaire en général. Aussi, la prévention, l’économie de la santé, l’épidémiologie, l’éthique, l’odontologie légale, l’ergonomie ou encore l’hygiène et l’asepsie sont enseignées. Discipline jeune, dont la sous-section universitaire est née en 1986, l’enseignement de la santé publique apparaît primordial aux futurs chirurgiens-dentistes pour comprendre les mutations de la profession, s’en emparer et s’y adapter. De plus en plus, un besoin en spécialistes de Santé Publique Orale et Odontologie Sociale se fait entendre pour préserver la santé orale de la population dans un cadre professionnel juste et structuré. Ce sont tous les enjeux de la création d’un DES (diplôme d’études spécialisées) pour préciser les missions de spécialistes en santé publique orale et odontologie sociale, qui seront de structurer des observatoires de la santé orale, d’amener une expertise méthodologique dans la recherche, de gérer le traitement et l’analyse de données fiables, de développer des stratégies sanitaires territoriales, de consolider l’enseignement de la santé publique et de la sensibilisation au questionnement éthique, et de promouvoir la médecine dentaire sociale. Ce faisant, cette spécialité fait entrer la discipline dans son âge adulte.
Réflexions éthiques autour de la recherche en ingénierie tissulaire osseuse [Ethical reflections on bone tissue engineering research]
Damien Offner, Laetitia Keller, Quentin Wagner, Nadia Benkirane-Jessel, Anne-Marie Musset
Éthique & Santé, 2018, 15 (4), pp.257-263. ⟨10.1016/j.etiqe.2018.06.002⟩
Article dans une revueAbstractRésumé L’ingénierie tissulaire osseuse représente aujourd’hui une stratégie de prise en charge des patients atteints de lésions osseuses pour laquelle les recherches foisonnent. Si elle représente indéniablement un grand espoir dans l’amélioration des pratiques cliniques et dans la diminution de l’incidence de complications, elle soulève aussi des réflexions éthiques qui se doivent d’accompagner son développement pour s’assurer d’être toujours dans l’intérêt du patient. Aussi, les réflexions menées dans cet article portent sur la nature et l’obtention des cellules utilisées pour l’ingénierie tissulaire osseuse, l’expérimentation animale, la responsabilité du chercheur face à la société, la sécurité à long terme et l’efficacité par rapport aux techniques actuelles, et enfin l’éthique et la déontologie du chercheur d’une manière plus globale. Ces thématiques rejoignent en grande partie celles de la recherche dans d’autres domaines. La littérature montre un intérêt, sinon une inquiétude, par rapport à ces questionnements éthiques, et invite les scientifiques et les éthiciens à s’engager davantage dans le débat.
How to set up a database?—a five-step process
Alice Brembilla, Bérenger Martin, Anne-Laure Parmentier, Maxime Desmarets, Pierre-Emmanuel Falcoz, Marc Puyraveau, Frédéric Mauny
Journal of Thoracic Disease, 2018, 10 (S29), pp.S3533 - S3538. ⟨10.21037/jtd.2018.09.138⟩
Article dans une revueAbstractDatabase setup directly impacts the quality and viability of research data, and therefore is a crucial part of the quality of clinical research. Setting up a quality database implies following a strict datamanagement process. Too much collected information threatens the quality of the information required to achieve the objectives of the study. Therefore, the data that will be collected and managed have to be cautiously discussed and selected. Case report forms (CRF) are the tools the most frequently used to collect the data specified by the protocol. An informative and well-structured document simplifies database design and data validation. Key elements are about choice of sequential or thematic structuring, information and type of information that should be entered and the importance of data standards and coding guide. Final database must be structured with unique ID patient, with one record per subject or per measure. Specific information must be provided for each variable according to the database specifications. The quality of the results is directly related to the quality of the collected data. The CRF should then be completed as fully and accurately as possible. Data validation relies on three key points: the CRF completion guidelines, the Edit Checks process and the Data clarification process. Various open source or business software applications provide all functionalities to set up a clinical data base and CRF. The General Data Protection Regulation (GDPR) standardizes and strengthens the protection of personal data across the EU and for other country's data being "processed" within the EU. The General principles include lawfulness, fairness and transparency, restricted use of data, data minimization, accuracy, limited storage, confidentiality and probity, and accountability.
Comment on “Epidermal growth factor receptor mutation predicts favorable outcomes in non-small cell lung cancer patients with brain metastases treated with stereotactic radiosurgery”, by Yang WC et al.
Stéphane Renaud, Joseph Seitlinger, Pierre Truntzer, Georges Noel, Gilbert Massard
Radiotherapy & Oncology, 2018, 129 (1), pp.187. ⟨10.1016/j.radonc.2017.12.003⟩
Article dans une revueCell Type Influences Local Delivery of Biomolecules from a Bioinspired Apatite Drug Delivery System
Jumana Alhamdi, Emily Jacobs, Gloria Gronowicz, Nadia Benkirane-Jessel, Marja Hurley, Liisa Kuhn
Materials, 2018, 11 (9), pp.1703. ⟨10.3390/ma11091703⟩
Article dans une revueAbstractRecently, the benefit of step-wise sequential delivery of fibroblast growth factor-2 (FGF-2) and bone morphogenetic protein-2 from a bioinspired apatite drug delivery system on mouse calvarial bone repair was demonstrated. The thicknesses of the nanostructured poly-L-Lysine/poly-L-Glutamic acid polyelectrolyte multilayer (PEM) and the bone-like apatite barrier layer that make up the delivery system, were varied. The effects of the structural variations of the coating on the kinetics of cell access to a cytotoxic factor delivered by the layered structure were evaluated. FGF-2 was adsorbed into the outer PEM, and cytotoxic antimycin-A (AntiA) was adsorbed to the substrate below the barrier layer to detect the timing of the cell access. While MC3T3-E1 osteoprogenitor cells accessed AntiA after three days, the RAW 264.7 macrophage access occurred within 4 h, unless the PEM layer was removed, in which case the results were reversed. Pits were created in the coating by the RAW 264.7 macrophages and initiated delivery, while the osteoprogenitor cell access to drugs occurred through a solution-mediated coating dissolution, at junctions between the islands of crystals. Macrophage-mediated degradation is therefore a mechanism that controls drug release from coatings containing bioinspired apatite.
The Society for Translational Medicine: indications and methods of percutaneous transthoracic needle biopsy for diagnosis of lung cancer
Qinghua Zhou, Jingsi Dong, Jie He, Deruo Liu, David H. Tian, Shugeng Gao, Shanqing Li, Lunxu Liu, Jianxing He, Yunchao Huang, Shidong Xu, Weimin Mao, Qunyou Tan, Chun Chen, Xiaofei Li, Zhu Zhang, Gening Jiang, Lin Xu, Lanjun Zhang, Jianhua Fu, Hui Li, Qun Wang, Lijie Tan, Danqing Li, Qinghua Zhou, Xiangning Fu, Zhongmin Jiang, Haiquan Chen, Wentao Fang, Xun Zhang, Yin Li, Ti Tong, Zhentao Yu, Yongyu Liu, Xiuyi Zhi, Tiansheng Yan, Xingyi Zhang, Roberto F. Casal, Eugenio Pompeo, Angelo Carretta, Marc Riquet, Ottavio Rena, Pierre-Emmanuel Falcoz, Hisashi Saji, Ali Zamir Khan, Jose Luis Danguilan, Diego Gonzalez-Rivas, Nicolas Guibert, Chengchu Zhu, Jianfei Shen
Journal of Thoracic Disease, 2018, 10 (9), pp.5538-5544. ⟨10.21037/jtd.2018.09.28⟩
Article dans une revueKavain Reduces Porphyromonas gingivalis-Induced Adipocyte Inflammation: Role of PGC-1 alpha Signaling
Shailendra P Singh, Olivier Huck, Nader G Abraham, Salomon Amar
The Journal of Immunology, 2018, 201 (5), pp.1491-1499. ⟨10.4049/jimmunol.1800321⟩
Article dans une revueAbstractA link between obesity and periodontitis has been suggested because of compromised immune response and chronic inflammation in obese patients. In this study, we evaluated the anti-inflammatory properties of Kavain, an extract from Piper methysticum, on Porphyromonas gingivalis induced inflammation in adipocytes with special focus on peroxisome proliferation activated receptor gamma coactivator alpha (PGC-1 alpha) and related pathways. The 3T3-L1 mouse preadipocytes and primary adipocytes harvested from mouse adipose tissue were infected with P. gingivalis, and inflammation (TNF-alpha; adiponectin/adipokines), oxidative stress, and adipogenic marker (FAS, CEBP alpha, and PPAR-gamma) expression were measured. Furthermore, effect of PGC-1 alpha knockdown on Kavain action was evaluated. Results showed that P gingivalis worsens adipocyte dysfunction through increase of TNF-alpha, IL-6, and iNOS and decrease of PGC-1 alpha and adiponectin. Interestingly, although Kavain obliterated P. gingivalis induced proinflammatory effects in wild-type cells, Kavain did not affect PGC-1 alpha deficient cells, strongly advocating for Kavain effects being mediated by PGC-1 alpha. In vivo adipocytes challenged with i.p. injection of P. gingivalis alone or P gingivalis and Kavain displayed the same phenotype as in vitro adipocytes. Altogether, our findings established anti-inflammatory and antioxidant effects of Kavain on adipocytes and emphasized protective action against P gingivalis induced adipogenesis. The use of compounds such as Kavain offer a portal to potential therapeutic approaches to counter chronic inflammation in obesity-related diseases.
Bone Marrow Stromal Cells Promote Innervation of Bioengineered Teeth
Marion Strub, Laetitia Keller, Ysia Idoux-Gillet, Hervé Lesot, François Clauss, Nadia Benkirane-Jessel, Sabine Kuchler-Bopp
Journal of Dental Research, 2018, 97 (10), pp.1152-1159. ⟨10.1177/0022034518779077⟩
Article dans une revueAbstractTransplantation of bone marrow mesenchymal stem cells (BMDCs) into a denervated side of the spinal cord was reported to be a useful option for axonal regeneration. The innervation of teeth is essential for their function and protection but does not occur spontaneously after injury. Cultured reassociations between dissociated embryonic dental mesenchymal and epithelial cells and implantation lead to a vascularized tooth organ regeneration. However, when reassociations were coimplanted with a trigeminal ganglion (TG), innervation did not occur. On the other hand, reassociations between mixed embryonic dental mesenchymal cells and bone marrow–derived cells isolated from green fluorescent protein (GFP) transgenic mice (BMDCs-GFP) (50/50) with an intact and competent dental epithelium (ED14) were innervated. In the present study, we verified the stemness of isolated BMDCs, confirmed their potential role in the innervation of bioengineered teeth, and analyzed the mechanisms by which this innervation can occur. For that purpose, reassociations between mixed embryonic dental mesenchymal cells and BMDCs-GFP with an intact and competent dental epithelium were cultured and coimplanted subcutaneously with a TG for 2 wk in ICR mice. Axons entered the dental pulp and reached the odontoblast layer. BMDCs-GFP were detected at the base of the tooth, with some being present in the pulp associated with the axons. Thus, while having a very limited contribution in tooth formation, they promoted the innervation of the bioengineered teeth. Using quantitative reverse transcription polymerase chain reaction and immunostainings, BMDCs were shown to promote innervation by 2 mechanisms: 1) via immunomodulation by reducing the number of T lymphocytes (CD3+, CD25+) in the implants and 2) by expressing neurotrophic factors such as NGF, BDNF, and NT3 for axonal growth. This strategy using autologous mesenchymal cells coming from bone marrow could be used to innervate bioengineered teeth without treatment with an immunosuppressor such as cyclosporine A (CsA), thus avoiding multiple side effects.
A carcinogenic trigger to study the function of tumor suppressor genes in Schmidtea mediterranea
Andromeda van Roten, Amal Zohir Abo-Zeid Barakat, Annelies Wouters, Thao Anh Tran, Stijn Mouton, Jean-Paul Noben, Luca Gentile, Karen Smeets
Disease Models and Mechanisms, 2018, 11 (9), ⟨10.1242/dmm.032573⟩
Article dans une revueAbstractPlanarians have been long known for their regenerative ability, which hinges on pluripotency. Recently, however, the planarian model has been successfully established for routine toxicological screens aimed to assess overproliferation, mutagenicity and tumorigenesis. In this study, we focused on planarian tumor suppressor genes (TSGs) and their role during chemically induced carcinogenic stress in Schmidtea mediterranea Combining in silico and proteomic screens with exposure to human carcinogen type 1A agent cadmium (Cd), we showed that many TSGs have a function in stem cells and that, in general, exposure to Cd accelerated the onset and increased the severity of the observed phenotype. This suggested that the interaction between environmental and genetic factors plays an important role in tumor development in S. mediterranea Therefore, we further focused on the synergistic effects of Cd exposure and p53 knockdown (KD) at the cellular and molecular levels. Cd also produced a specific proteomic landscape in homeostatic animals, with 172 proteins differentially expressed, 43 of which were downregulated. Several of these proteins have tumor suppressor function in human and other animals, namely Wilms Tumor 1 Associated Protein (WT1), Heat Shock Protein 90 (HSP90), Glioma Pathogenesis-Related Protein 1 (GLIPR1) and Matrix Metalloproteinase B (Smed-MMPB). Both Glipr1 and MmpB KD produced large outgrowths, epidermal lesions and epidermal blisters. The epidermal blisters that formed as a consequence of Smed-MmpB KD were populated by smedwi1+ cells, many of which were actively proliferating, while large outgrowths contained ectopically differentiated structures, such as photoreceptors, nervous tissue and a small pharynx. In conclusion, Smed-MmpB is a planarian TSG that prevents stem cell proliferation and differentiation outside the proper milieu.
A harmonized European training syllabus for thoracic surgery: report from the ESTS-ERS task force
Gilbert Massard, Nathalie Tabin, Sharon Mitchell, Hasan Batirel, Alessandro Brunelli, Stefano Elia, Anna Frick, Martin Huertgen, Antoon Lerut, Laureano Molins, Kostas Papagiannopoulos, Dragan Subotic, Paul van Schil, Gonzalo Varela, Dirk van Raemdonck
European Journal of Cardio-Thoracic Surgery, 2018, 54 (2), pp.214-220. ⟨10.1093/ejcts/ezy206⟩
Article dans une revueAbstractTraining of European thoracic surgeons is subject to huge variations in terms of length of training, content of training and operative experience during training. Harmonization of training outcomes has been approached by creating the European Board of Thoracic Surgery, which has been accredited by the European Union of Medical Specialists (UEMS); however, a clear description of the content of training is lacking. Building on their recognized experience with curriculum building, task forces of the European Respiratory Society and the European Society of Thoracic Surgery agreed on a joint task force on training in thoracic surgery. The goal of this study is to report on the mission statement developed from the UEMS-driven survey, describe the Delphi method and the observed results and present the first large consensus-based syllabus. The working group is currently working on a description of the curriculum and assessment of learning outcomes.
Reply: End-Stage Renal Disease and Arrhythmic Death
Frederic Sacher, Laurence Jesel, Thierry Hannedouche, Christian Combe
JACC: Clinical Electrophysiology, 2018, 4 (7), pp.976. ⟨10.1016/j.jacep.2018.05.012⟩
Article dans une revueThe potency of commercial blackcurrant juices to induce relaxation in porcine coronary artery rings is not correlated to their antioxidant capacity but to their anthocyanin content
Jessica Tabart, Cyril Auger, Claire Kevers, Jacques Dommes, Brigitte Pollet, Jean-Olivier Defraigne, Valerie Schini-Kerth, Joel Pincemail
Nutrition, 2018, 51-52, pp.53-59. ⟨10.1016/j.nut.2018.01.009⟩
Article dans une revuePotential mechanisms underlying cardiovascular protection by polyphenols: Role of the endothelium
Min-Ho Oak, Cyril Auger, Eugenia Belcastro, Sin-Hee Park, Hyun-Ho Lee, Valerie Schini-Kerth
Free Radical Biology and Medicine, 2018, 122, pp.161-170. ⟨10.1016/j.freeradbiomed.2018.03.018⟩
Article dans une revueSNAI2 and TWIST1 in lymph node progression in early stages of NSCLC patients
Camille Emprou, Pauline Le van Quyen, Jeremie Jegu, Nathalie Prim, Noëlle Weingertner, Eric Guerin, Erwan Pencreach, Michèle Legrain, Anne-Claire Voegeli, Charlotte Leduc, Bertrand Mennecier, Pierre-Emmanuel Falcoz, Anne Olland, Nicolas Santelmo, Elisabeth Quoix, Gilbert Massard, Dominique Guenot, Marie Pierre Chenard, Michele Beau-Faller
Cancer Medicine, 2018, 7 (7), pp.3278-3291. ⟨10.1002/cam4.1545⟩
Article dans une revueAbstractLymph node metastasis is an important prognosis factor in non-small cell lung cancer (NSCLC) patients. The aim of this study was to investigate the role of epithelial to mesenchymal transition (EMT) in lymph node progression in the early stages of NSCLC. We studied a retrospective cohort of 160 consecutive surgically treated NSCLC patients with available frozen tumor samples for expression of EMT markers (CDH1, CTNNB1, CDH2, and VIMENTIN), inducers (TGFB1, c-MET, and CAIX), and transcription factors (EMT-TF: SNAI1, SNAI2, ZEB1, TWIST1, and TWIST2). Partial EMT was more frequent in N1-2 (N+) vs N0 patients (P < .01). TGFB1 (P = .02) as well as SNAI2 (P < .01) and TWIST1 (P = .04) were the most differentially expressed genes in N+ tumors. In this group, ZEB1 was correlated with all EMT inducers and other EMT-TFs were overexpressed depending on the inducers. CAIX was an independent prognostic factor for overall survival (IC 95% HR: 1.10-5.14, P = .03). Partial EMT is involved in lymph node progression of NSCLC patients and depends on the TGFβ pathway. EMT-TFs are differentially expressed depending on EMT inducers. CAIX might be a relevant prognostic marker in early stage NSCLC.
A harmonised European training syllabus for thoracic surgery: report from the ESTS/ERS task force group
Gilbert Massard, Nathalie Tabin, Sharon Mitchell, Hasan Batirel, Alessandro Brunelli, Stefano Elia, Anna Frick, Martin Huertgen, Antoon Lerut, Laureano Molins, Kostas Papagiannopoulos, Dragan Subotic, Paul van Schil, Gonzalo Varela, Dirk van Raemdonck
European Respiratory Journal, 2018, 51 (6), pp.1800370. ⟨10.1183/13993003.00370-2018⟩
Article dans une revueCritically ill elderly patients (≥ 90 years): Clinical characteristics, outcome and financial implications
Pierrick Le Borgne, Quentin Maestraggi, Sophie Couraud, François Lefebvre, Jean-Etienne Herbrecht, Alexandra Boivin, Baptiste Michard, Vincent Castelain, Georges Kaltenbach, Pascal Bilbault, Francis Schneider
PLoS ONE, 2018, 13 (6), pp.e0198360. ⟨10.1371/journal.pone.0198360⟩
Article dans une revueAbstractBACKGROUND: Patients aged over 90 are being admitted to intensive care units (ICUs) with increasing frequency. The appropriateness of such decisions still remains controversial due to questionable outcome, limited resources and costs. Our objective was to determine the clinical characteristics and outcome in elderly patients (≥ 90 years) admitted in a medical ICU, with an additional focus on medico-economic implications. METHODS: We reviewed the charts of all patients (≥ 90 years) admitted to our ICU. We compared them with all other ICU patients (< 90 years), sought to identify ICU mortality predictors and also performed a long-term survival follow-up. RESULTS: In the study group of 317 stays: median age was 92 years (IQR: 91-94 years); most patients were female (71.3%.). Acute respiratory failure (52.4%) was the main admission diagnosis; mean SAPS II was 55.6±21.3; half the stays (49.2%) required mechanical ventilation (duration: 7.2±8.8 days); withholding and withdrawing decisions were made for 33.4% of all stays. ICU and hospital mortality rates were 35.7% and 42.6% respectively. Mechanical ventilation (OR = 4.83, CI95%: 1.59-15.82) was an independent predictor of ICU mortality whereas age was not (OR = 0.88, CI95%: 0.72-1.08). Social security reimbursement was significantly lower in the study group compared with all other ICU stays, both per stay (13,160 vs 22,092 Euros, p< 0.01) and per day of stay (p = 0.03). CONCLUSION: Among critically ill elderly patients (≥ 90 years), chronological age was not an independent factor of ICU mortality. ICU care-related costs in this population should not be considered as a limiting factor for ICU admission.
CT-ADP Point-of-Care Assay Predicts 30-Day Paravalvular Aortic Regurgitation and Bleeding Events following Transcatheter Aortic Valve Replacement
Marion Kibler, Benjamin Marchandot, Nathan Messas, Thibault Caspar, Flavien Vincent, Jean-Jacques von Hunolstein, Lelia Grunebaum, Antje Reydel, Antoine Rauch, Ulun Crimizade, Michel Kindo, Tam Hoang Minh, Annie Trinh, Hélène Petit-Eisenmann, Fabien de Poli, Pierre Leddet, Laurence Jesel, Patrick Ohlmann, Sophie Susen, Eric van Belle, Olivier Morel
Thrombosis and Haemostasis, 2018, 118 (05), pp.893-905. ⟨10.1055/s-0038-1639352⟩
Article dans une revueAbstractBackground Paravalvular aortic regurgitation (PVAR) remains a frequent postprocedural concern following transcatheter aortic valve replacement (TAVR). Persistence of flow turbulence results in the cleavage of high-molecular-weight von Willebrand multimers, primary haemostasis dysfunction and may favour bleedings. Recent data have emphasized the value of a point-of-care measure of von Willebrand factor–dependent platelet function (closure time [CT] adenosine diphosphate [ADP]) in the monitoring of immediate PVAR. This study examined whether CT-ADP could detect PVAR at 30 days and bleeding complications following TAVR. Methods CT-ADP was assessed at baseline and the day after the procedure. At 30 days, significant PVAR was defined as a circumferential extent of regurgitation more than 10% by transthoracic echocardiography. Events at follow-up were assessed according to the Valve Academic Research Consortium-2 consensus classification. Results Significant PVAR was diagnosed in 44 out of 219 patients (20.1%). Important reduction of CT-ADP could be found in patients without PVAR, contrasting with the lack of CT-ADP improvement in significant PVAR patients. By multivariate analysis, CT-ADP > 180 seconds (hazard ratio [HR]: 5.1, 95% confidence interval [CI]: 2.5–10.6; p < 0.001) and a self-expandable valve were the sole independent predictors of 30-day PVAR. At follow-up, postprocedural CT-ADP >180 seconds was identified as an independent predictor of major/life-threatening bleeding (HR: 1.7, 95% CI [1.0–3.1]; p = 0.049). Major/life-threatening bleedings were at their highest levels in patients with postprocedural CT-ADP > 180 seconds (35.2 vs. 18.8%; p = 0.013). Conclusion Postprocedural CT-ADP > 180 seconds is an independent predictor of significant PVAR 30 days after TAVR and may independently contribute to major/life-threatening bleedings.
Periodontal Tissues, Maxillary Jaw Bone, and Tooth Regeneration Approaches: From Animal Models Analyses to Clinical Applications
Fareeha Batool, Marion Strub, Catherine Petit, Isaac Bugueno, Fabien Bornert, François Clauss, Olivier Huck, Sabine Kuchler-Bopp, Nadia Benkirane-Jessel
Nanomaterials, 2018, 8 (5), pp.337. ⟨10.3390/nano8050337⟩
Article dans une revueAbstractThis review encompasses different pre-clinical bioengineering approaches for periodontal tissues, maxillary jaw bone, and the entire tooth. Moreover, it sheds light on their potential clinical therapeutic applications in the field of regenerative medicine. Herein, the electrospinning method for the synthesis of polycaprolactone (PCL) membranes, that are capable of mimicking the extracellular matrix (ECM), has been described. Furthermore, their functionalization with cyclosporine A (CsA), bone morphogenetic protein-2 (BMP-2), or anti-inflammatory drugs' nanoreservoirs has been demonstrated to induce a localized and targeted action of these molecules after implantation in the maxillary jaw bone. Firstly, periodontal wound healing has been studied in an induced periodontal lesion in mice using an ibuprofen-functionalized PCL membrane. Thereafter, the kinetics of maxillary bone regeneration in a pre-clinical mouse model of surgical bone lesion treated with BMP-2 or BMP-2/Ibuprofen functionalized PCL membranes have been analyzed by histology, immunology, and micro-computed tomography (micro-CT). Furthermore, the achievement of innervation in bioengineered teeth has also been demonstrated after the co-implantation of cultured dental cell reassociations with a trigeminal ganglia (TG) and the cyclosporine A (CsA)-loaded poly(lactic-co-glycolic acid) (PLGA) scaffold in the jaw bone. The prospective clinical applications of these different tissue engineering approaches could be instrumental in the treatment of various periodontal diseases, congenital dental or cranio-facial bone anomalies, and post-surgical complications.
Oropharyngeal and nasopharyngeal decontamination with chlorhexidine gluconate in lung cancer surgery: a randomized clinical trial
Xavier Benoit D’journo, Pierre-Emmanuel Falcoz, Marco Alifano, Jean-Philippe Le Rochais, Thomas D’Annoville, Gilbert Massard, Jean Francois Regnard, Philippe Icard, Charles Marty-Ane, Delphine Trousse, Christophe Doddoli, Bastien Orsini, Sophie Edouard, Matthieu Million, Nathalie Lesavre, Anderson Loundou, Karine Baumstarck, Florence Peyron, Stephane Honoré, Stéphanie Dizier, Aude Charvet, Marc Leone, Didier Raoult, Laurent Papazian, Pascal Alexandre Thomas
Intensive Care Medicine, 2018, 44 (5), pp.578-587. ⟨10.1007/s00134-018-5156-2⟩
Article dans une revueNormothermic ex-vivo preservation with the portable Organ Care System Lung device for bilateral lung transplantation (INSPIRE): a randomised, open-label, non-inferiority, phase 3 study
Gregor Warnecke, Dirk van Raemdonck, Michael Smith, Gilbert Massard, Jasleen Kukreja, Federico Rea, Gabriel Loor, Fabio de Robertis, Jayan Nagendran, Kumud Dhital, Francisco Javier Moradiellos Díez, Christoph Knosalla, Christian Bermudez, Steven Tsui, Kenneth Mccurry, I-Wen Wang, Tobias Deuse, Guy Lesèche, Pascal Thomas, Igor Tudorache, Christian Kühn, Murat Avsar, Bettina Wiegmann, Wiebke Sommer, Arne Neyrinck, Marco Schiavon, Fiorella Calabrese, Nichola Santelmo, Anne Olland, Pierre-Emanuel Falcoz, Andre Simon, Andres Varela, Joren Madsen, Marshall Hertz, Axel Haverich, Abbas Ardehali
The Lancet Respiratory Medicine, 2018, 6 (5), pp.357-367. ⟨10.1016/S2213-2600(18)30136-X⟩
Article dans une revueL'hygiène des units dentaires : la sécurité des patients à proprement parler
Damien Offner, Anne-Marie Musset
Revue d'Odonto-Stomatologie, 2018, 47, pp.158-171
Article dans une revueAbstractRésumé : L’unit dentaire est un élément essentiel à la pratique de la chirurgie dentaire. Son utilisation présente toutefois un risque infectieux lié à de possibles contaminations externes, mais aussi internes par l’eau qui y circule, le système d’aspiration, ou encore via des dispositifs médicaux qui y sont connectés (notamment les porte-instruments dynamiques). Afin de garantir la sécurité des soins, tant pour les patients que pour les professionnels de santé, le chirurgien-dentiste doit disposer de méthodes d’entretien de l’unit, contrôlées et validées, et doit pouvoir les appliquer. Nous nous proposons dans cet article d’exposer un protocole d’entretien des units dentaires répondant aux risques de contamination de ces équipements, ainsi que d’exposer des méthodes de validation éprouvées (qualité microbiologique de l’eau circulant dans l’unit, hygiène du système d’aspiration, nettoyage des porte-instruments dynamiques). Ces méthodes permettront aux praticiens libéraux ou hospitaliers, chirurgiens-dentistes ou autres utilisateurs d’units, de contrôler le risque infectieux lié à l’utilisation de l’unit, afin de garantir une sécurité des soins à leurs patients. Summary : Dental units are an essential element in the practice of dental surgery. However, their use presents a risk of infection due to possible external contamination, but also internal contamination through flowing water, through the suction system, and also via medical devices that are connected to it (particularly dynamic handpieces). To guarantee the safety of care, both for patients and healthcare professionals, the dental surgeon must rely on checked and validated methods of maintenance of dental units and must be able to apply them. In this article, we will present maintenance guidelines for dental units addressing the contamination risks of this equipment and we will describe proven validation methods (microbial quality of water flowing in dental unit waterlines, hygiene of the suction system, cleaning of dynamic handpieces). These methods will allow practitioners in hospitals or private practices, dental surgeons or other people using dental units to check the infectious risk inherent to this equipment in order to provide safe care to their patients.
Semaphorin 3A receptor inhibitor as a novel therapeutic to promote innervation of bioengineered teeth
Sabine Bopp-Kuchler, Dominique Bagnard, Michael van Der Heyden, Ysia Idoux-Gillet, Marion Strub, Hervé Gegout, Herve Lesot, Nadia Jessel, Laetitia Keller
Journal of Tissue Engineering and Regenerative Medicine, 2018, 12 (4), pp.e2151-e2161. ⟨10.1002/term.2648⟩
Article dans une revuePolyphenol-Rich Blackcurrant Juice Prevents Endothelial Dysfunction in the Mesenteric Artery of Cirrhotic Rats with Portal Hypertension: Role of Oxidative Stress and the Angiotensin System
Sherzad Rashid, Noureddine Idris-Khodja, Cyril Auger, Claire Kevers, Joel Pincemail, Mahmoud Alhosin, Nelly Boehm, Monique Oswald-Mammosser, Valerie Schini-Kerth
Journal of Medicinal Food, 2018, 21 (4), pp.390-399. ⟨10.1089/jmf.2017.0078⟩
Article dans une revuePrognostic Value of Exon 19 Versus 21 EGFR Mutations Varies According to Disease Stage in Surgically Resected Non-small Cell Lung Cancer Adenocarcinoma
Stéphane Renaud, Joseph Seitlinger, Francesco Guerrera, Jérémie Reeb, Michele Beau-Faller, Anne-Claire Voegeli, Joelle Siat, Christelle Clément-Duchêne, Angelica Tiotiu, Nicola Santelmo, Lorena Costardi, Enrico Ruffini, Pierre-Emmanuel Falcoz, Jean-Michel Vignaud, Gilbert Massard
Annals of Surgical Oncology, 2018, 25 (4), pp.1069-1078. ⟨10.1245/s10434-018-6347-3⟩
Article dans une revueAbstractBACKGROUND: The prognostic value of exon 19 and 21 EGFR mutations in stage IV non-small cell lung cancer (NSCLC) is well established. OBJECTIVE: We aimed to evaluate the prognostic value of the mutations in surgically resected NSCLC. METHODS: We retrospectively reviewed data from 1798 surgically resected NSCLC adenocarcinomas between 2007 and 2017 in three departments of thoracic surgery (Nancy/Strasbourg, France, and Torino, Italy) for whom mutational status was known. Overall survival (OS) was evaluated using log-rank and Cox proportional hazard models. RESULTS: EGFR exon 19 deletion was observed in 108 patients (55.1%) and exon 21 L858R mutations were observed in 88 patients (44.9%). In stage I, the median OS was not significantly different between exons 19 and 21 (p = 0.54), while, in stage II, the median OS reached 65 months [95% confidence interval (CI) 41.67-88.33] for exon 19 mutations and decreased to 48 months for exon 21 mutations (95% CI 44.21-51.79; p = 0.027). In multivariate analysis, exon 19 deletion remained a favorable prognostic factor [hazard ratio (HR) 0.314, 95% CI 0.098-0.997; p = 0.05]. In stage III, the median OS reached 66 months (95% CI 44.67-87.32) for exon 19 mutations and decreased to 32 months for exon 21 mutations (95% CI 29.86-34.14; p = 0.03). In multivariate analysis, exon 19 deletion remained a significantly favorable prognostic factor (HR 0.165, 95% CI 0.027-0.999; p = 0.05). CONCLUSION: The prognostic value of EGFR exon 19 and 21 mutations appears to be different according to disease stage in surgically resected NSCLC.
Anthocyanin-rich bilberry extract induces apoptosis in acute lymphoblastic leukemia cells via redox-sensitive epigenetic modifications
Antonio León-González, Tanveer Sharif, Cyril Auger, Malak Abbas, Guy Fuhrmann, Valérie Schini-Kerth
Journal of Functional Foods, 2018, 44, pp.227-234. ⟨10.1016/j.jff.2018.03.013⟩
Article dans une revueAbstractPolycomb group (PcG) proteins are epigenetic regulators that reduce tumor suppressor gene expression and promote cancer cell survival. The aim of the present study was to determine whether a bilberry extract (Antho 50) inhibits the expression of PcG proteins in Jurkat cells and, if so, to determine the underlying mechanism. Apoptotic rates and the formation of reactive oxygen species (ROS) were assessed by flow cytometry, and protein expression by Western blotting. Antho 50 induced apoptosis, augmented ROS formation, increased p73, p21 and cleaved caspase-3 expression levels, and decreased those of p-Akt, survivin, PcG proteins, HDACs, DNMT1 and UHRF1. The antioxidant enzyme PEG-catalase prevented the formation of ROS and apoptosis induced by Antho 50 and also by H2O2. These findings indicate that Antho 50 promotes apoptosis in Jurkat cells, in part, by decreasing the expression levels of PcG proteins, and, hence, the subsequent PcG proteins-dependent pro-survival events via a redox-dependent mechanism.
Epigenetic reprogramming enables the transition from primordial germ cell to gonocyte
Peter Ws Hill, Harry G Leitch, Cristina Requena, Zhiyi Sun, Rachel Amouroux, Monica Roman-Trufero, Malgorzata Borkowska, Jolyon Terragni, Romualdas Vaisvila, Sarah Linnett, Hakan Bagci, Gopuraja Dharmalingham, Vanja Haberle, Boris Lenhard, Yu Zheng, Sriharsa Pradhan, Petra Hajkova
Nature, 2018, 555 (7696), ⟨10.1038/nature25964⟩
Article dans une revueMicrofluidic-Assisted Production of Size-Controlled Superparamagnetic Iron Oxide Nanoparticles-Loaded Poly(methyl methacrylate) Nanohybrids
Shukai Ding, Mohamed F. Attia, Justine Wallyn, Chiara Taddei, Christophe A. Serra, Nicolas Anton, Mohamad Kassem, Marc Schmutz, Meriem Er-Rafik, Nadia Messaddeq, Alexandre Collard, Wei Yu, Michele Giordano, Thierry F. Vandamme
Langmuir, 2018, 34 (5), pp.1981-1991. ⟨10.1021/acs.langmuir.7b01928⟩
Article dans une revueAirway microbiota signals anabolic and catabolic remodeling in the transplanted lung
Stéphane Mouraux, Eric Bernasconi, Céline Pattaroni, Angela Koutsokera, John-David Aubert, Johanna Claustre, Christophe Pison, Pierre-Joseph Royer, Antoine Magnan, Romain Kessler, Christian Benden, Paola M. Soccal, Benjamin J. Marsland, Laurent P. Nicod
Journal of Allergy and Clinical Immunology, 2018, Equipe III, 141 (2), pp.718--729.e7. ⟨10.1016/j.jaci.2017.06.022⟩
Article dans une revueAbstractBACKGROUND: Homeostatic turnover of the extracellular matrix conditions the structure and function of the healthy lung. In lung transplantation, long-term management remains limited by chronic lung allograft dysfunction, an umbrella term used for a heterogeneous entity ultimately associated with pathological airway and/or parenchyma remodeling. OBJECTIVE: This study assessed whether the local cross-talk between the pulmonary microbiota and host cells is a key determinant in the control of lower airway remodeling posttransplantation. METHODS: Microbiota DNA and host total RNA were isolated from 189 bronchoalveolar lavages obtained from 116 patients post lung transplantation. Expression of a set of 11 genes encoding either matrix components or factors involved in matrix synthesis or degradation (anabolic and catabolic remodeling, respectively) was quantified by real-time quantitative PCR. Microbiota composition was characterized using 16S ribosomal RNA gene sequencing and culture. RESULTS: We identified 4 host gene expression profiles, among which catabolic remodeling, associated with high expression of metallopeptidase-7, -9, and -12, diverged from anabolic remodeling linked to maximal thrombospondin and platelet-derived growth factor D expression. While catabolic remodeling aligned with a microbiota dominated by proinflammatory bacteria (eg, Staphylococcus, Pseudomonas, and Corynebacterium), anabolic remodeling was linked to typical members of the healthy steady state (eg, Prevotella, Streptococcus, and Veillonella). Mechanistic assays provided direct evidence that these bacteria can impact host macrophage-fibroblast activation and matrix deposition. CONCLUSIONS: Host-microbes interplay potentially determines remodeling activities in the transplanted lung, highlighting new therapeutic opportunities to ultimately improve long-term lung transplant outcome.
Multicentric evaluation of the impact of central tumour location when comparing rates of N1 upstaging in patients undergoing video-assisted and open surgery for clinical Stage I non-small-cell lung cancer†
Herbert Decaluwé, René Horsleben Petersen, Alex Brunelli, Cecilia Pompili, Agathe Seguin-Givelet, Lucile Gust, Clemens Aigner, Pierre-Emmanuel Falcoz, Philippe Rinieri, Florian Augustin, Youri Sokolow, Ad Verhagen, Lieven Depypere, Kostas Papagiannopoulos, Dominique Gossot, Xavier Benoit d'Journo, Francesco Guerrera, Jean-Marc Baste, Thomas Schmid, Alessia Stanzi, Dirk van Raemdonck, Jeremy Bardet, Pascal-Alexandre Thomas, Gilbert Massard, Steffen Fieuws, Johnny Moons, Christophe Dooms, Paul de Leyn, Henrik Jessen Hansen
European Journal of Cardio-Thoracic Surgery, 2018, 53 (2), pp.359-365. ⟨10.1093/ejcts/ezx338⟩
Article dans une revueAbstractOBJECTIVES: Large retrospective series have indicated lower rates of cN0 to pN1 nodal upstaging after video-assisted thoracic surgery (VATS) compared with open resections for Stage I non-small-cell lung cancer (NSCLC). The objective of our multicentre study was to investigate whether the presumed lower rate of N1 upstaging after VATS disappears after correction for central tumour location in a multivariable analysis. METHODS: Consecutive patients operated for PET-CT based clinical Stage I NSCLC were selected from prospectively managed surgical databases in 11 European centres. Central tumour location was defined as contact with bronchovascular structures on computer tomography and/or visibility on standard bronchoscopy. RESULTS: Eight hundred and ninety-five patients underwent pulmonary resection by VATS (n = 699, 9% conversions) or an open technique (n = 196) in 2014. Incidence of nodal pN1 and pN2 upstaging was 8% and 7% after VATS and 15% and 6% after open surgery, respectively. pN1 was found in 27% of patients with central tumours. Less central tumours were operated on by VATS compared with the open technique (12% vs 28%, P < 0.001). Logistic regression analysis showed that only tumour location had a significant impact on N1 upstaging (OR 6.2, confidence interval 3.6-10.8; P < 0.001) and that the effect of surgical technique (VATS versus open surgery) was no longer significant when accounting for tumour location. CONCLUSIONS: A quarter of patients with central clinical Stage I NSCLC was upstaged to pN1 at resection. Central tumour location was the only independent factor associated with N1 upstaging, undermining the evidence for lower N1 upstaging after VATS resections. Studies investigating N1 upstaging after VATS compared with open surgery should be interpreted with caution due to possible selection bias, i.e. relatively more central tumours in the open group with a higher chance of N1 upstaging.
Endothelial chimerism and vascular sequestration protect pancreatic islet grafts from antibody-mediated rejection
Chien-Chia Chen, Eric Pouliquen, Alexis Broisat, Francesco Andreata, Maud Racapé, Patrick Bruneval, Laurence Kessler, Mitra Ahmadi, Sandrine Bacot, Carole Saison-Delaplace, Marina Marcaud, Jean-Paul Duong van Huyen, Alexandre Loupy, Jean Villard, Sandrine Demuylder-Mischler, Thierry Berney, Emmanuel Morelon, Meng-Kun Tsai, Marie-Nathalie Kolopp-Sarda, Alice Koenig, Virginie Mathias, Stéphanie Ducreux, Catherine Ghezzi, Valerie Dubois, Antonino Nicoletti, Thierry Defrance, Olivier Thaunat
The Journal of clinical investigation, 2018, 128 (1), pp.219-232. ⟨10.1172/JCI93542⟩
Article dans une revueAbstractHumoral rejection is the most common cause of solid organ transplant failure. Here, we evaluated a cohort of 49 patients who were successfully grafted with allogenic islets and determined that the appearance of donor-specific anti-HLA antibodies (DSAs) did not accelerate the rate of islet graft attrition, suggesting resistance to humoral rejection. Murine DSAs bound to allogeneic targets expressed by islet cells and induced their destruction in vitro; however, passive transfer of the same DSAs did not affect islet graft survival in murine models. Live imaging revealed that DSAs were sequestrated in the circulation of the recipients and failed to reach the endocrine cells of grafted islets. We used murine heart transplantation models to confirm that endothelial cells were the only accessible targets for DSAs, which induced the development of typical microvascular lesions in allogeneic transplants. In contrast, the vasculature of DSA-exposed allogeneic islet grafts was devoid of lesions because sprouting of recipient capillaries reestablished blood flow in grafted islets. Thus, we conclude that endothelial chimerism combined with vascular sequestration of DSAs protects islet grafts from humoral rejection. The reduced immunoglobulin concentrations in the interstitial tissue, confirmed in patients, may have important implications for biotherapies such as vaccines and monoclonal antibodies.
The synthetic flavagline FL3 protects against colitis-associated cancer via inhibition of wnt/beta-catenin signaling
Dn Jackson, J Han, Hussein Abou Hamdan, Laurent Désaubry, Xf Huo, Qy Zhang, Rf Souza, Arianne L. Theiss
Gastroenterology, 2018, 154 (6)
Article dans une revueDiagnosis and Innovative Multidisciplinary Management of Hallermann-Streiff Syndrome: 20-Year Follow-Up of a Patient
Anand Dulong, Fabien Bornert, Catherine-Isabelle Gros, Jean-Francois Garnier, Xavier van Bellinghen, Florence Fioretti, Jean-Christophe Lutz
Cleft Palate Craniofacial Journal, 2018, 55 (10), pp.1458-1466. ⟨10.1177/1055665618765829⟩
Article dans une revueAbstractHallermann-Streiff syndrome (HSS) is a rare congenital disorder that mainly affects head and face development. We described the different patterns of the disease throughout the whole growth period and provided innovative treatment steps. Indeed, early genioplasty and dental implantation before growth completion were performed. These steps allowed to improve facial growth and to provide orthodontic anchorage, respectively. Complementary orthognathic surgery achieved satisfactory occlusion and refined aesthetics. We believe such an approach could be considered as a relevant treatment modality to complete multidisciplinary care in patients with HSS.
Treatment of cystic fibrosis-related diabetes
Laurence Kessler
Lancet Diabetes Endocrinol, 2018, 6 (3), ⟨10.1016/S2213-8587(18)30042-1⟩
Article dans une revuePrésentation clinique, paraclinique et sensibilité des scores diagnostiques de l’embolie pulmonaire aux urgences : étude rétrospective de l’effet de l’âge au CHRU de Strasbourg [=Clinical and paraclinical patterns of presentation, and sensitivity of diagnostic scores for pulmonary embolism at the emergencies: retrospective study on the impact of age at the University hospitals of Strasbourg (France)]
Alexandre Boussuge, Anne Boidevézi, Thomas Vogel, Elise Schmitt, François Lefebvre, Pascal Bilbault, Pierre-Oliver Lang
Gériatrie et psychologie & neuropsychiatrie du vieillissement, 2018, 16 (4), pp.349-358. ⟨10.1684/pnv.2018.0765⟩
Article dans une revueAbstractThe diagnosis of pulmonary embolism remains difficult. The objective of this study was to analyze the effect of age on the clinical presentation mode and the sensitivity of the diagnostic scores. Methods: In retrospect, all patients discharged with a documented diagnosis of pulmonary embolism from the adult emergency service of the Regional university hospital of Strasbourg (France) over a year were considered. According to 4 age categories (<70, 70-74, 75-80 and >80 years) the data from the medical records were analyzed and compared. Diagnostic scores of Wells and modified Geneva were calculated. Results: 117 patients met the inclusion criteria (mean age 71.8 +/- 13.8 years, women 54%). Chest pain was less common after 80 years; no difference was observed for syncope or dyspnea although the oxygen saturation is lower in old age. For diagnosis, 25% of patients had a lung scintigraphy with an increased recourse with age (<70 years: 10%, >80 years: 41%). Thoracic computed tomography angiography concerned 79% of patients with a significant decrease of his use in older. The sensitivity of the diagnostic scores was low but increased with age when the strong and intermediate probabilities of pulmonary embolism were combined. Conclusion: This study confirms the low specificity of the clinical signs of pulmonary embolism, whatever the age. It also shows the low sensitivity of the diagnostic scores in the 70 years or older.
An oral health promotion intervention in French pregnant women; highlights at risk subgroups for dental diseases
Ml Mayard-Pons, F Rilliard, Anne-Marie Musset, P Farge
Mouth and Teeth, 2018, 2 (2), ⟨10.15761/MTJ.1000115⟩
Article dans une revueReply
Michel Kindo, Stephanie Perrier, Tam Hoang Minh, Jean-Philippe Mazzucotelli
Annals of Thoracic Surgery, 2018, 105 (1), pp.329. ⟨10.1016/j.athoracsur.2017.08.056⟩
Article dans une revueTreatment of rats with the omega fatty acid 3 formulation EPA: DHA 6: 1 decreases the leukocyte microparticles-induced endothelial pro-inflammatory responses and senescence
Abdul Wahid Qureshi, Raed Altamimy, Ali El Habhab, Lamia Amoura, Mohamad Kassem, Sonia Khemais-Benkhiat, Muhammad Akmal Farooq, Hira Hasan, P Sin-Hee, Fatiha El-Ghazouani, Cyril Auger, Laurence Kessler, Valerie Schini-Kerth, Florence Toti
Transplant International, 2018, 31, pp.5-5
Article dans une revueReal-life practices of chronic thromboembolic pulmonary hypertension screening: Results from the REMOTEV observational study
Elena-Mihaela Cordeanu, Waël Younes, Matthieu Canuet, Corina Mirea, Alix-Marie Faller, Anne-Sophie Frantz, Ayhan Daglayan, Sébastien Gaertner, Dominique Stephan
Clinical Respiratory Journal, 2018, 12 (7), pp.2303-2306. ⟨10.1111/crj.12794⟩
Article dans une revueMalignancies after lung transplantation
Anne Olland, Pierre-Emmanuel Falcoz, Gilbert Massard
Journal of Thoracic Disease, 2018, 10 (5), pp.3132 - 3140. ⟨10.21037/jtd.2018.05.34⟩
Article dans une revueAbstractLung transplantation has become an efficient life-saving treatment for patients with end stage respiratory disease. The increasing good outcome following lung transplantation may be explained by growing experience of transplant teams and availability of potent immunosuppressive drugs. Nevertheless, the latter carries an inherent risk for malignancy besides other common side effects such as systemic hypertension, diabetes and renal dysfunction. Malignancies occur in a smaller proportion of patients but explain for a large proportion of deaths following transplantation. From the first year post-transplantation they will represent the third cause of death with an increasing incidence along post lung transplant survival. In this chapter, we will browse the different types of malignancies arising following lung transplantation. According to the different techniques for lung transplantation, specific types of bronchogenic carcinoma will be described in the explanted lung, in the native lung, and in the graft. Risk factors associated to immunosuppressive therapy, but also to occupational and environmental factors, especially smoking, will be discussed. Eventually, we will strive at integrating recommendations for the treatment of malignancies following lung transplantation.
Hemodynamic profile of pulmonary hypertension (PH) in ARDS
George Calcaianu, Mihaela Calcaianu, Anthony Gschwend, Matthieu Canuet, Ferhat Meziani, Romain Kessler
Pulmonary Circulation, 2018, 8 (1), ⟨10.1177/2045893217753415⟩
Article dans une revueAbstractAcute respiratory distress syndrome (ARDS) is a diffuse lung injury that leads to a severe acute respiratory failure. Traditional diagnostic criteria for pulmonary hypertension (PH), in this situation, may be unreliable due to the effects of positive pressure ventilation and vasoactive agents. The aim of this study is to describe the hemodynamic characteristics of PH secondary to ARDS, in relation with respiratory parameters. We assessed the hemodynamic, respiratory function, and ventilator parameters in a cohort of 38 individuals with ARDS-associated PH defined by mean pulmonary arterial pressure (mPAP) ≥ 25 mmHg. Individual characteristics: PaO2/FiO2 = 110 ± 60 mmHg, alveolar-arterial oxygen gradient (A-aO2) = 549 ± 148.9 mmHg, positive end-expiratory pressure (PEEP) = 8.7 ± 3.5 cmH2O, pulmonary static compliance (Cstat) = 30 ± 12.1 L*cmH2O-1, mPAP = 35.4 ±6.6 mmHg, pulmonary artery wedge pressure (PAWP) = 15.6 ± 5.5 mmHg, cardiac index (CI) = 3.4 ± 1.2 L/min/m2, pulmonary vascular resistance (PVR) = 3.3 ± 1.6 Wood units (WU), right atrial pressure (RAP) = 13.4 ± 5.4 mmHg, diastolic pulmonary gradient (DPG) = 12.6 ± 6.5 mmHg, and trans-pulmonary gradient (TPG) = 19.7 ± 7.7 mmHg. The composite marker-DPG >7 mmHg and PVR > 3 WU-is associated with lower CI ( P = 0.016), higher mPAP ( P = 0.003), and lower pulmonary static compliance ( P = 0.028). We confirmed a poor prognosis of ARDS associated with PH, with a 50% survival rate after 17 days. We observed that the survival rate at 28 days was better in the case of improvement in the PaO2/FiO2 ratio in the first 24 h (log rank P = 0.003). ARDS associated with PH is a severe condition with a very poor survival rate. The composite marker DPG > 7 mmHg and PVR > 3 WU seemed to better describe the hemodynamic and respiratory dysfunction. The improvement in PaO2/FiO2 ratio in the first 24 h defined a better survival in our cohort of patients.
Safety and tolerability of a single administration of AR-301, a human monoclonal antibody, in ICU patients with severe pneumonia caused by Staphylococcus aureus: first-in-human trial
Bruno François, Emmanuelle Mercier, Céline Gonzalez, Karim Asehnoune, Saad Nseir, Maud Fiancette, Arnaud Desachy, Gaëtan Plantefève, Ferhat Meziani, Paul-André de Lame, Pierre-François Laterre, Raphaël Clere-Jehl, Raphael Favory
Intensive Care Medicine, 2018, 44 (11), pp.1787-1796. ⟨10.1007/s00134-018-5229-2⟩
Article dans une revueAbstractPURPOSE: Hospital-acquired bacterial pneumonia (HABP) is a critical concern in hospitals with ventilator-associated bacterial pneumonia (VABP) remaining the most common infection in the ICU, often due to Staphylococcus aureus, an increasingly difficult to treat pathogen. Anti-infective monoclonal antibodies (mAb) may provide new, promising treatment options. This randomized, double-blinded, placebo-controlled study aimed at assessing the safety and pharmacokinetics of AR-301, an S. aureus alpha toxin-neutralizing mAb, and exploring its clinical and microbiologic outcomes when used adjunctively with standard-of-care antibiotics. METHODS: Eligibility in this trial required microbiologically confirmed severe S. aureus pneumonia, including HABP, VABP or CABP, treated in the ICU and an APACHE II score ≤ 30. Standard-of-care antibiotics selected by the investigators were administered to all patients in the study following clinical and microbiologic confirmation of S. aureus pneumonia. Adjunctive treatment of AR-301 was to start < 36 h after onset of severe pneumonia. AR-301 was administered to four sequentially ascending dose cohorts. The placebo cohort received antibiotics and a placebo buffer. Clinical outcomes were adjudicated by a blinded committee. S. aureus eradication was declared based on a negative follow-up culture and presumed to be negative when no culture was obtained in the presence of clinical improvement. RESULTS: Thirteen ICUs enrolled 48 patients, with pneumonia attributable to MRSA in six subjects. The study drug displayed a favorable safety profile: Of 343 AEs reported, 8 (2.3%) were deemed related, none serious. In a post hoc subgroup analysis of VABP patients receiving AR-301, ventilation duration was shorter for AR-301-treated patients compared with the placebo group. Overall, there was a trend toward a better and faster microbiologic eradication at day 28. The PK profile of AR-301 is consistent with that of a human IgG1 mAb, with a plasma half-life of about 25 days. CONCLUSIONS: Adjunctive treatment of severe S. aureus HABP with anti-staphylococcal mAbs appears feasible and suggests some clinical benefits, but larger randomized studies are needed to better define its safety and efficacy.
Giant ventricular pseudoaneurysm following inferior myocardial infarction: insights from multimodal imaging approach
Benjamin Marchandot, Ulun Crimizade, Soraya El Ghannudi, Olivier Morel
European Heart Journal. Case Reports, 2018, 2 (1), pp.yty019. ⟨10.1093/ehjcr/yty019⟩
Article dans une revueAbstractWe describe the case of an 85-year-old woman with a fast growing ventricular pseudoaneurysm after an acute inferior myocardial infarction (MI). A multimodal imaging approach including transthoracic echocardiography (TTE) and computed tomography (CT) was essential to guide diagnostic and therapeutic strategies in this very rare situation.
A country wide adaptation of the European Society of Thoracic Surgeons lung cancer core database: the Hungarian model
Zalan Szanto, Jozsef Furak, Pierre-Emmanuel Falcoz, Alessandro Brunelli, Gyoergy Ang
Journal of Thoracic Disease, 2018, 10 (Suppl 29), pp.S3467-S3471. ⟨10.21037/jtd.2018.04.100⟩
Article dans une revueAbstractBackground: Registering details of thoracic surgical activity has a long tradition in Hungary. Implemented first as a procedure based register, characteristics of the treatment, complications and outcomes has been noted for the last three decades. Although the limitations of the used database hindered the scientific analysis in the dataset and restricted the possibility of benchmarking. The European Society of Thoracic Surgeons (ESTS) database is offering a specialty-specific, procedure-specific, web-based electronic database for data contribution enabling international comparisons. Our aim was to accommodate and implement the ESTS database as the new Hungarian national thoracic surgical registry. Methods: In 2014, cooperation of the ESTS Database Committee and the Hungarian Society of Thoracic Surgery evolved a new structure for contributing national thoracic surgical data, called the ESTS database "Hungarian model". The European dataset was translated into Hungarian, extended questionnaire and continuous data access helped the completion of the dataset. The "Hungarian model" was incorporated into the common practice of all the thoracic surgical centers in Hungary. Results: In the first year of its implementation the "Hungarian model" of the ESTS dataset became the platform to use for contributing thoracic surgical data in Hungary. All the data included in the dataset were completed and periodically analyzed to form the annual Hungarian report ("the Hungarian Silver Book"). The dataset is permanently accessible for national scientific analysis and serves as a basis for quality improvement intentions. Conclusions: The Hungarian model proved to be able to serve as a national database. The complete dataset of the thoracic activity has become eligible for scientific analysis and international benchmarking, highlighting the most important core messages of the ESTS database project of improving quality and patient safety thoracic surgeons. By creating a framework for a national registry the system is incorporating an alternative for other thoracic surgical societies.
Maxillary Bone Regeneration Based on Nanoreservoirs Functionalized epsilon-Polycaprolactone Biomembranes in a Mouse Model of Jaw Bone Lesion
Marion Strub, Xavier van Bellinghen, Florence Fioretti, Fabien Bornert, Nadia Benkirane-Jessel, Ysia Idoux-Gillet, Sabine Kuchler-Bopp, François Clauss
BioMed Research International , 2018, 2018, ⟨10.1155/2018/7380389⟩
Article dans une revueAbstractCurrent approaches of regenerative therapies constitute strategies for bone tissue reparation and engineering, especially in the context of genetical diseases with skeletal defects. Bone regeneration using electrospun nanofibers' implant has the following objectives: bone neoformation induction with rapid healing, reduced postoperative complications, and improvement of bone tissue quality. In vivo implantation of polycaprolactone (PCL) biomembrane functionalized with BMP-2/Ibuprofen in mouse maxillary defects was followed by bone neoformation kinetics evaluation using microcomputed tomography. Wild-Type (WT) and Tabby (Ta) mice were used to compare effects on a normal phenotype and on a mutant model of ectodermal dysplasia (ED). After 21 days, no effect on bone neoformation was observed in Ta treated lesion (4% neoformation compared to 13% in the control lesion). Between the 21st and the 30th days, the use of biomembrane functionalized with BMP-2/Ibuprofen in maxillary bone lesions allowed a significant increase in bone neoformation peaks (resp., +8% in mutant Ta and +13% in WT). Histological analyses revealed a neoformed bone with regular trabecular structure, areas of mineralized bone inside the membrane, and an improved neovascularization in the treated lesion with bifunctionalized membrane. In conclusion, PCL functionalized biomembrane promoted bone neoformation, this effect being modulated by the Ta bone phenotype responsible for an alteration of bone response.
Yellow urticaria following plasma transfusion
Hamid Merdji, Raphaël Clere-Jehl, Alexandra Monnier, Ferhat Meziani
Intensive Care Medicine, 2018, 44 (1), pp.100-101. ⟨10.1007/s00134-017-4931-9⟩
Article dans une revueRéponses des auteurs à propos de « Impact diagnostique de l’éosinopénie aux urgences dans le sepsis : les données sont controversées », de Moussiegt et al.[=Authors’ reply about « Impact diagnostique de l’éosinopénie aux urgences dans le sepsis : les données sont controversées », Moussiegt et al.]
Charles-Eric Lavoignet, Pierrick Le Borgne, Pascal Bilbault
La Revue de Médecine Interne, 2018, 39 (3), pp.209-210. ⟨10.1016/j.revmed.2018.01.001⟩
Article dans une revueOral hygiene for everybody
Olivier Huck, Jacques Buxeraud
Actualités Pharmaceutiques, 2018, 57 (579), pp.18-21. ⟨10.1016/j.actpha.2018.07.004⟩
Article dans une revueAbstractPoor oral health can result in periodontal disease. Gingivitis is an inflammation of the gums of infectious origin which, when treated quickly, is cured without sequelae but, without treatment, usually develops into gingivitis with local and systemic consequences. Whether it's children, seniors, pregnant women, diabetic patients, oncology patients or those with heart disease, oral hygiene is essential. (c) 2018 Elsevier Masson SAS. All rights reserved
A comprehensive patient-derived tumor xenograft (PDX) collection representing the heterogeneity of kidney, prostate and bladder cancers
Hervé Lang, Claire Beraud, Myriam Lassalle, Isabelle Bernard-Pierrot, Veronique Lindner, Yves Allory, Michel Soulie, Xavier Game, Pascal Rischmann, Eric Potiron, François Radvanyi, Philippe Lluel, Thierry Massfelder
Cancer Research, 2018, 78 (13), ⟨10.1158/1538-7445.AM2018-1035⟩
Article dans une revueBlackcurrant, a relaxing little bay ...
Hyun-Ho Lee, Eugenia Belcastro, Cyril Auger, Sinhee Park, Claire Kevers, Joël Pincemail, Min-Ho Oak, Valerie Schini-Kerth
Médecine/Sciences, 2018, 34 (6-7), pp.620-621
Article dans une revueCOMET: a multicomponent home-based disease-management programme versus routine care in severe COPD
Romain Kessler, Pere Casan-Clara, Dieter Koehler, Silvia Tognella, Jose Luis Viejo, Roberto W. Dal Negro, Salvador Díaz-Lobato, Karina Reissig, José Miguel Rodríguez González-Moro, Gilles Devouassoux, Jean-Michel Chavaillon, Pierre Botrus, Jean-Michel Arnal, Julio Ancochea, Anne Bergeron-Lafaurie, Carlos de Abajo, Winfried J. Randerath, Andreas Bastian, Christian G. Cornelissen, Georg Nilius, Joëlle B. Texereau, Jean Bourbeau
European Respiratory Journal, 2018, 51 (1), ⟨10.1183/13993003.01612-2017⟩
Article dans une revueAbstractThe COPD Patient Management European Trial (COMET) investigated the efficacy and safety of a home-based COPD disease management intervention for severe COPD patients.The study was an international open-design clinical trial in COPD patients (forced expiratory volume in 1 s <50% of predicted value) randomised 1:1 to the disease management intervention or to the usual management practices at the study centre. The disease management intervention included a self-management programme, home telemonitoring, care coordination and medical management. The primary end-point was the number of unplanned all-cause hospitalisation days in the intention-to-treat (ITT) population. Secondary end-points included acute care hospitalisation days, BODE (body mass index, airflow obstruction, dyspnoea and exercise) index and exacerbations. Safety end-points included adverse events and deaths.For the 157 (disease management) and 162 (usual management) patients eligible for ITT analyses, all-cause hospitalisation days per year (mean±sd) were 17.4±35.4 and 22.6±41.8, respectively (mean difference -5.3, 95% CI -13.7 to -3.1; p=0.16). The disease management group had fewer per-protocol acute care hospitalisation days per year (p=0.047), a lower BODE index (p=0.01) and a lower mortality rate (1.9% versus 14.2%; p<0.001), with no difference in exacerbation frequency. Patient profiles and hospitalisation practices varied substantially across countries.The COMET disease management intervention did not significantly reduce unplanned all-cause hospitalisation days, but reduced acute care hospitalisation days and mortality in severe COPD patients.
Hyperoxia toxicity in septic shock patients according to the Sepsis-3 criteria: a post hoc analysis of the HYPER2S trial
Julien Demiselle, Martin Wepler, Clair Hartmann, Peter Radermacher, Frederique Schortgen, Ferhat Meziani, Mervyn Singer, Valérie Seegers, Pierre Asfar
Annals of Intensive Care, 2018, 8, pp.90. ⟨10.1186/s13613-018-0435-1⟩
Article dans une revueAbstract<p>Background</p> <p>Criteria for the Sepsis-3 definition of septic shock include vasopressor treatment to maintain a mean arterial pressure > 65 mmHg and a lactate concentration > 2 mmol/L. The impact of hyperoxia in patients with septic shock using these criteria is unknown.</p> <p>Methods</p> <p>A post hoc analysis was performed of the HYPER2S trial assessing hyperoxia versus normoxia in septic patients requiring vasopressor therapy, in whom a plasma lactate value was available at study inclusion. Mortality was compared between patients fulfilling the Sepsis-3 septic shock criteria and patients requiring vasopressors for hypotension only (i.e., with lactate ≤ 2 mmol/L).</p> <p>Results</p> <p>Of the 434 patients enrolled, 397 had available data for lactate at inclusion. 230 had lactate > 2 mmol/L and 167 ≤ 2 mmol/L. Among patients with lactate > 2 mmol/L, 108 and 122 were “hyperoxia”- and “normoxia”-treated, respectively. Patients with lactate > 2 mmol/L had significantly less COPD more cirrhosis and required surgery more frequently. They also had higher illness severity (SOFA 10.6 ± 2.8 vs. 9.5 ± 2.5, p = 0.0001), required more renal replacement therapy (RRT), and received vasopressor and mechanical ventilation for longer time. Mortality rate at day 28 was higher in the “hyperoxia”-treated patients with lactate > 2 mmol/L as compared to “normoxia”-treated patients (57.4% vs. 44.3%, p = 0.054), despite similar RRT requirements as well as vasopressor and mechanical ventilation-free days. A multivariate analysis showed an independent association between hyperoxia and mortality at day 28 and 90. In patients with lactate ≤ 2 mmol/L, hyperoxia had no effect on mortality nor on other outcomes.</p> <p>Conclusions</p> <p>Our results suggest that hyperoxia may be associated with a higher mortality rate in patients with septic shock using the Sepsis-3 criteria, but not in patients with hypotension alone.</p>
Do we need complementary locoregional analgesia in patients undergoing minimally invasive thoracic surgical procedures?
Gilbert Massard, Anne Olland, Pierre-Emmanuel Falcoz
Journal of Thoracic Disease, 2018, 10 (3), pp.1318 - 1319. ⟨10.21037/jtd.2018.03.34⟩
Article dans une revueAcute Appendicitis as an Unexpected Cause of Inverted Takotsubo Cardiomyopathy
Mihaela Mihalcea-Danciu, Michel Zupan, Pierrick Le Borgne, Pascal Bilbault
Journal of Emergencies, Trauma, and Shock, 2018, 11 (2), pp.143-145. ⟨10.4103/JETS.JETS_13_17⟩
Article dans une revueAbstractTakotsubo cardiomyopathy (TTC), also known as transient left ventricular ballooning syndrome, is a stress-induced-cardiomyopathy. It is precipitated by emotional or physical stress and is characterized by normal coronary arteries and transient regional wall motion abnormalities. Variants of TTC include apical ballooning syndrome and, less commonly, mid, basal, and local variants. New onset heart failure or acute coronary syndromes are a common presentation of TTC. Arrhythmias such as VT, VF, and torsade de pointes have also been reported. We present here a 42-year-old man with an inverted Takotsubo variant with pulmonary edema and transient accelerated idioventricular rhythm. He was initially admitted in the Emergency Department for acute and non-complicated appendicitis. Coronary angiogram showed normal coronary arteries and left ventriculography revealed a reverse variant of TTC. The patient had completely recovered. Myocarditis was ruled out by cardiac magnetic resonance imaging.
Primary Hemostatic Disorders and Late Major Bleeding After Transcatheter Aortic Valve Replacement Auteurs
Marion Kibler, Benjamin Marchandot, Nathan Messas, Julien Labreuche, Vincent Flavien, Leila Grunenbaum, Viet Anh Hoang, Antje Reydel, Ulun Crimizade, Michel Kindo, T. Hoang Minh, Floriane Zeyons, Annie Trinh, Hélène Petit-Eisenmann, Fabien de Poli, Pierre Leddet, Alain Duhamel, Laurence Jesel, Mickaël Ohana, Sophie Susen, Patrick Ohlmann, Eric van Belle, Olivier Morel
Journal of the American College of Cardiology, 2018, ⟨10.1016/j.jacc.2018.08.2143⟩
Article dans une revueAbstractBACKGROUND: Periprocedural and late (>30 days) bleedings represent major complications after transcatheter aortic valve replacement and have been identified as potential areas for improved patient care. OBJECTIVES: The authors sought to evaluate the impact of ongoing primary hemostasis disorders on late major/life-threatening bleeding complications (MLBCs). METHODS: Bleedings were assessed according to the VARC-2 (Valve Academic Research Consortium-2) criteria. Closure time of adenosine diphosphate (CT-ADP), a surrogate marker of high molecular weight von Willebrand multimers proteolysis was assessed 24 h after the procedure. Ongoing primary hemostasis disorder was defined by a CT-ADP >180 s. RESULTS: Among 372 patients who survived at 30 days, MLBCs occurred in 42 patients (11.3%) at a median follow-up of 383 days (interquartile range: 188 to 574 days). MLBCs were mainly of gastrointestinal origin (42.8%) and were associated with increased overall mortality (hazard ratio [HR]: 5.66; 95% confidence interval [CI]: 3.10 to 10.31; p < 0.001) and cardiac mortality (HR: 11.62; 95% CI: 4.59 to 29.37; p < 0.001). A 2.5-fold elevation of MLBCs could be evidenced in patients with a CT-ADP > 180 s (27.4% vs. 11.5%; p < 0.001). Multivariate regression analysis identified paravalvular leak (PVL) (HR: 6.31; 95% CI: 3.43 to 11.60; p < 0.0001) and CT-ADP > 180 s (HR: 3.08; 95% CI: 1.62 to 5.81; p = 0.0005) as predictor of MLBCs. CONCLUSIONS: MLBCs after transcatheter aortic valve replacement are frequent and associated with an increased morbidity and mortality. PVL and CT-ADP >180 s were identified as strong predictors for MLBCs. These findings strongly suggest that persistent HMW defects contribute to enhanced bleeding risk in patients with residual PVL.
Vertebral fracture as a complication of cardiopulmonary resuscitation
Hamid Merdji, Charlotte Poussardin, Julie Helms, Ferhat Meziani
Intensive Care Medicine, 2018, 44 (10), pp.1750-1751. ⟨10.1007/s00134-018-5170-4⟩
Article dans une revueAre Sex Steroid Hormones Influencing Periodontal Conditions? A Systematic Review
Aliye Akcali, Zeynep Akcali, Fareeha Batool, Catherine Petit, Olivier Huck
Current Oral Health Reports, 2018, ⟨10.1007/s40496-018-0168-0⟩
Article dans une revueAbstractThe evidence is more supportive towards the effect of sex steroid hormone perturbations on an existing periodontal disease rather than the initiation of disease, suggesting that clearer clinical recommendations and guidelines for hormone-dominated periods are needed. Purpose of ReviewThe pulsatile fashion of the release of sex steroid hormones has an impact on periodontium. The aim of this systematic review was to determine whether sex steroid hormones influence periodontal diseases or not.Recent FindingsMEDLINE via OVID, EMBASE, and the Cochrane Database updated until July 2017 were searched and, particularly, the papers published over the past 5 years were reviewed.SummaryThe evidence is more supportive towards the effect of sex steroid hormone perturbations on an existing periodontal disease rather than the initiation of disease. Examination of potential diagnostics for preventive or therapeutic applications is needed in order to decrease the composite risks arising from the hormonal changes themselves. Also, further clinical trials comparing sex steroid hormone exposure on patients with similar baseline periodontal conditions are emerging in order to understand the causal mechanisms between the two, eventually, helping to make clearer clinical recommendations and guidelines for hormone-dominated periods in both men and women.
Treatments, Outcomes, and Validity of Prognostic Scores in Patients With Sarcomatoid Renal Cell Carcinoma: A 20-Year Single-Institution Experience
Clément Korenbaum, Laure Pierard, Alicia Thiery, Fleur Story, Veronique Lindner, Hervé Lang, Jean-Emmanuel Kurtz, Philippe Barthelemy
Clinical Genitourinary Cancer, 2018, 16 (3), ⟨10.1016/j.clgc.2017.12.005⟩
Article dans une revueAbstractMetastatic renal cell carcinoma with a sarcomatoid component (mSRCC) is a rare disease associated with a poor prognosis. We report the outcomes of 47 patients with mSRCC treated over 2 decades in a French cancer center. mSRCC patients diagnosed between 1995 and 2016 were retrospectively identified from the pathology database. Recorded variables included: clinical stage, metastatic sites, pathologic stage, type of treatments, prognostic group, and survival data. The primary end point was overall survival. Forty-seven mSRCC patients were included. The median age was 60 years (range, 41-77 years). Lung represented the first metastatic site (70%) followed by glandular (28%), bone (23%), liver (21%), and brain (6%). Seven (15%) of patients received immunotherapy including cytokine-based therapy (n = 7), or checkpoint inhibitors (n = 2). Moreover, 7 patients received chemotherapy. Of 42 treated patients, 2 patients achieved complete response and 9 partial response (24%). Median overall survival was 13.3 months. International Metastatic Renal Cell Carcinoma Database Consortium (IMDC) and Memorial Sloan Kettering Cancer Center (MSKCC) prognostic groups were valid in this subset of patients with renal cell carcinoma with a sarcomatoid component (SRCC). A sarcomatoid percentage cutoff of 30% had the strongest influence on overall survival. Despite the arrival of tyrosine kinase inhibitors 10 years ago, metastatic SRCC remains a disease of poor prognosis and difficult to treat. Chemotherapy regimen and targeted therapies showed little activity in SRCC. IMDC score is a relevant prognostic factor in SRCC patients. Additionally, the MSKCC score, the sarcomatoid percentage, the necrotic fraction, and the vascular invasion could prove useful in identifying patients with a more favorable prognosis. These findings could help toward better patient stratification in clinical trials. Prospective trials assessing new drugs including immune checkpoint inhibitors are currently ongoing to improve SRCC survival. Introduction: Metastatic renal cell carcinoma (RCC) with a sarcomatoid component is a rare disease associated with a poor prognosis. We report the outcomes of 47 patients with metastatic sarcomatoid RCC (SRCC) treated with different modalities including chemotherapy, tyrosine kinase inhibitors, or immunotherapy over 2 decades in a French cancer center. Furthermore, we assessed the validity of prognostic scores in this subset of RCC. Patients and Methods: Patients were retrospectively identified from the database of the pathology department of the University Hospital of Strasbourg. We enrolled all patients with RCC with a sarcomatoid component diagnosed between 1995 and 2016. Patients with nonmetastatic RCC were excluded. Recorded variables included: clinical stage, metastatic sites, pathologic stage, type of treatments, prognostic group, and survival data. The primary end point was overall survival. The institutional ethical committee approved the study protocol. Results: Of 104 patients with SRCC, 47 patients with metastatic SRCC were included. The median age was 60 years (range, 41-77 years). Median length of follow-up was 34 months (range, 1-180 months). Fifty-five percent of patients had known metastases at diagnosis. Lung represented the first metastatic site (70%) followed by glandular (28%), bone (23%), liver (21%), and brain (6%). Fifteen percent of patients received immunotherapy including cytokine-based therapy (n = 7), or checkpoint inhibitors (n = 2). Moreover, 7 patients received chemotherapy. Five patients received no systemic treatment because of their poor performance status. Of 42 treated patients, 2 patients achieved complete response and 9 partial response (24%). Median overall survival was 13.3 months. International Metastatic Renal Cell Carcinoma Database Consortium (IMDC) and Memorial Sloan Kettering Cancer Center (MSKCC) prognostic groups were valid in this subset of SRCC patients. A sarcomatoid percentage cutoff of 30% had the strongest influence on overall survival. Conclusion: Despite the arrival of tyrosine kinase inhibitors 10 years ago, metastatic SRCC remains a disease of poor prognosis and difficult to treat. Chemotherapy regimen and targeted therapies showed little activity in SRCC. IMDC score is a relevant prognostic factor in SRCC patients. Additionally, the MSKCC score, the sarcomatoid percentage, the necrotic fraction, and the vascular invasion could prove useful in identifying patients with a more favorable prognosis. These findings could help toward better patient stratification in clinical trials. Prospective trials assessing new drugs including immune checkpoint inhibitors are currently ongoing to improve SRCC survival. (C) 2017 Elsevier Inc. All rights reserved.
Involvement of bilitranslocase and beta-glucuronidase in the vascular protection by hydroxytyrosol and its glucuronide metabolites in oxidative stress conditions
Mélanie Burban, Grégory Meyer, Anne Olland, François Séverac, Blandine Yver, Florence Toti, Valérie Schini-Kerth, Ferhat Meziani, Julie Boisramé-Helms
Journal of Nutritional Biochemistry, 2018, 51 (5), pp.8 - 15. ⟨10.1016/j.jnutbio.2017.09.009⟩
Article dans une revueAbstractOlive oil vascular benefits have been attributed to hydroxytyrosol (HT). However, HT biological actions are still debated because it is extensively metabolized into glucuronides (GCs). The aim of this study was to test HT and GC vasculoprotective effects and the underlying mechanisms using aorta rings from 8-week-old male Wistar rats. In the absence of oxidative stress, incubation with 100 mu M HT or GC for 5 min did not exert any vasorelaxing effect and did not influence the vascular function. Conversely, in condition of oxidative stress [upon incubation with 500 mu M tent-butylhydroperoxide (t-BHP) for 30 min], preincubation with HT or GC improved acetylcholine-induced vasorelaxation compared with untreated samples (no t-BHP). This protective effect was lost for GC, but not for HT, when a washing step (15 min) was introduced between preincubation with HT or GC and t-BHP addition, suggesting that only HT enters the cells. In agreement, bilitranslocase inhibition with 100 mu M phenylmethanesulfonyl fluoride for 20 min reduced significantly HT, but not GC, effect on the vascular function upon stress induction. Moreover, GC protective effect (improvement of endothelium-dependent relaxation in response to acetylcholine) in oxidative stress conditions was reduced by preincubation of aorta rings with 300 mu M D-saccharolactone to inhibit beta-glucuronidase, which can deconjugate polyphenols. Finally, only HT was detected by high-pressure liquid chromatography in aorta rings incubated with GC and t-BHP. These results suggest that, in conditions of oxidative stress, GC can be deconjugated into FIT that is transported through the cell membrane by bilitranslocase to protect vascular function.
COLT: Ten years of research in lung transplantation, results and perspectives
A. Tissot, A. Foureau, C. Brosseau, R. Danger, A. Roux, E. Bernasconi, C. Gomez, M. Durand, B. R. Picard, J. Le Pavec, J. Claustre, P. Lacoste, M. Benmerad, M. Pain, V. Siroux, P. -J. Royer, P. Mordant, M. Reynaud-Gaubert, Romain Kessler, O. Brugiere, J. -F Mornex, C. Dromer, M. Dahan, C. Knoop, V. Boussaud, A. Koutsokera, K. Botturi-Cavailles, E. Durand, J. Loy, L. Nicod, C. Pison, S. Brouard, F. -X. Blanc, A. Magnan, Consortium Colt
Revue des Maladies Respiratoires, 2018, 35 (7), pp.699-705. ⟨10.1016/j.rmr.2018.06.007⟩
Article dans une revueTemporomandibular Joint Regenerative Medicine
Xavier van Bellinghen, Ysia Idoux-Gillet, Marion Pugliano, Marion Strub, Fabien Bornert, François Clauss, Pascale Schwinte, Laetitia Keller, Nadia Benkirane-Jessel, Sabine Bopp-Kuchler, Jean-Christophe Lutz, Florence Fioretti
International Journal of Molecular Sciences, 2018, 19 (2), ⟨10.3390/ijms19020446⟩
Article dans une revueAbstractThe temporomandibular joint (TMJ) is an articulation formed between the temporal bone and the mandibular condyle which is commonly affected. These affections are often so painful during fundamental oral activities that patients have lower quality of life. Limitations of therapeutics for severe TMJ diseases have led to increased interest in regenerative strategies combining stem cells, implantable scaffolds and well-targeting bioactive molecules. To succeed in functional and structural regeneration of TMJ is very challenging. Innovative strategies and biomaterials are absolutely crucial because TMJ can be considered as one of the most difficult tissues to regenerate due to its limited healing capacity, its unique histological and structural properties and the necessity for long-term prevention of its ossified or fibrous adhesions. The ideal approach for TMJ regeneration is a unique scaffold functionalized with an osteochondral molecular gradient containing a single stem cell population able to undergo osteogenic and chondrogenic differentiation such as BMSCs, ADSCs or DPSCs. The key for this complex regeneration is the functionalization with active molecules such as IGF-1, TGF-1 or bFGF. This regeneration can be optimized by nano/micro-assisted functionalization and by spatiotemporal drug delivery systems orchestrating the 3D formation of TMJ tissues.
Socioeconomic and behavioral determinants of tooth brushing frequency: results from the representative French 2010 HBSC cross-sectional study
Gabriel Fernandez de Grado, Virginie Ehlinger, Emmanuelle Godeau, Mariane Sentenac, Catherine Arnaud, Cathy Nabet, Paul Monsarrat
Journal of Public Health Dentistry, 2018, 78 (3), pp.221-230. ⟨10.1111/jphd.12265⟩
Article dans une revueAbstractObjectives: To describe tooth brushing frequency and its association with a wide range of socioeconomic and behavioral characteristics, using a nationally representative sample of school-aged children in france. Methods: Our sample included 11,337 students aged from 10 to 16 years, who answered the HBSC questionnaire. Some variables were grouped into composite variables, thus generating scores for: eating habits, health and body, relationships with parents, socioeconomic status (SES) of family, and school life. Multivariate logistic regression analyses were used to study the relationship between these variables and tooth brushing frequency. Results: Girls were more likely to brush twice a day than boys [adjusted Odds Ratio: aOR 2.47, 95 percent confidence interval CI95% (1.97; 3.11), aOR 1.89, CI95% (1.56; 2.29), aOR 1.45, CI95% (1.25; 1.68) for low, mid, and high school life score, respectively]. Students were more likely to brush twice a day when they had high (versus low) scores for healthy eating habits [aOR = 1.60; 95 percent CI: (1.40; 1.83)], well-being concerning health and body [aOR = 1.61; 95 percent CI: (1.40; 1.86)] and SES [aOR = 1.25; 95 percent CI: (1.09; 1.43)]. Conclusions: We believe that preventive health campaigns should target school and family environments more specifically to reach the most disadvantaged sections of the population and include promotion of whole health. The messages should be designed to efficiently reach adolescents, e.g., by appealing to their maturity, self-esteem, and emotional factors. Through the incorporation of qualitative research elements, identifying the reasons for not brushing twice a day would also help to develop new prevention programs.
Acute Shoulder Dislocation in the Emergency Department: A Retrospective Evaluation of Pain Management and a Proposal for a Standard Operating Procedure
O Guillot, Pierrick Le Borgne, Philippe Kauffmann, Jp Steinmetz, Mickaël Schaeffer, Charlotte Kaeuffer, Charles-Eric Lavoignet, P Adam, Pascal Bilbault
Annales françaises de médecine d'urgence, 2018, 8 (1), pp.7-14. ⟨10.1007/s13341-017-0805-6⟩
Article dans une revueAbstractIntroduction: Shoulder dislocations are a frequent pathology in the Emergency Department (ED), they are very painful and there are no specific guidelines for their management. They represent 45% of all dislocations. The main objective of this study was to analyze pain management in the ED. Methods: We conducted a monocentric, observational and retrospective study including 238 patients who presented to the ED with acute shoulder dislocation from January 1, 2012 to April 30, 2015. We excluded spontaneously reduced dislocations, prosthetic dislocations and chronic dislocations. Results: Acute shoulder dislocations were mostly reduced in the ED (90%, 95% CI : [86-94]). It remains an hyperalgic condition (median Visual Analog Scale [VAS] 8/10 [IQR : 6-9]), affecting young patients (median age : 48 years, IQR : 28-73). The Equimolar Mixture of Oxygen and Nitrous Oxide (EMONO) was the most prescribed analgesic for reduction in 50% of all patients (95% CI : [42-55]) followed by paracetamol (25%) and nefopam (15%). Furthermore, in the subgroup of fracture complicated dislocations, EMONO was also the most frequently prescribed analgesic. The distribution of other analgesics was otherwise similar. Finally, the comparison between the two medical teams (emergency physician and orthopedic surgeons) was similar and found only one difference, which concerned midazolam prescription. It was more often used by emergency physicians (16% vs 4%, p=0.001). Conclusion: This study revealed that pain management is often sub-optimal with a very low use of analgesics and hypnotics despite high intake VAS. A standard operating procedure to improve the overall management of these patients will be here proposed.
Parathyroid hormone-related protein modulates inflammation in mouse mesangial cells and blunts apoptosis by enhancing COX-2 expression
Mazène Hochane, Denis Raison, Catherine Coquard, Claire Beraud, Audrey Bethry, Sabrina Danilin, Thierry Massfelder, Mariette Barthelmebs
American Journal of Physiology - Cell Physiology, 2018, 314 (2), ⟨10.1152/ajpcell.00018.2017⟩
Article dans une revueAbstractInjury of mesangial cells (MC) is a prominent feature of glomerulonephritis. Activated MC secrete inflammatory mediators that induce cell apoptosis. Parathyroid hormone-related peptide (PTHrP) is a locally active cytokine that enhances cell survival and is upregulated by proinflammatory factors in many cell types. The aim of this study was to analyze the regulation of PTHrP expression by inflammatory cytokines and to evaluate whether PTHrP itself acts as a proinflammatory and/or survival factor on male murine MC in primary culture. Our results showed that IL-1 beta (10 ng/ml) and TNF-beta (10 ng/ml) rapidly and transiently upregulated PTHrP expression in MC. The effects of IL-1 beta were both transcriptional and posttranscriptional, with stabilization of the PTHrP mRNA by human antigen R (HuR). Proteome profiler arrays showed that PTHrP itself enhanced cytokines within 2 h in cell lysates, mainly IL-17, IL-16, IL-1 alpha, and IL-6. PTHrP also stimulated sustained expression (2-4 h) of chemokines, mainly regulated upon activation normal T cell expressed and secreted (RANTES)/C-C motif chemokine 5 (CCL5) and macrophage inflammatory protein-2 (MIP-2)/CX-C motif chemokine 2 (CXCL2), thymus and activation-regulated chemokine (TARC)/CCL17, and interferon-inducible T cell alpha-chemoattractant (I-TAC)/CXCL11. Moreover, PTHrP markedly enhanced cyclooxygenase-2 (COX-2) expression and elicited its auto-induction through the activation of the NF-kappa B pathway. PTHrP induced MC survival via the COX-2 products, and PTHrP overexpression in MC blunted the apoptotic effects of IL-1 beta and TNF-alpha. Altogether, these findings suggest that PTHrP functions as a booster of glomerular inflammatory processes and may be a negative feedback loop preserving MC survival.
Porphyromonas gingivalis Differentially Modulates Apoptosome Apoptotic Peptidase Activating Factor 1 in Epithelial Cells and Fibroblasts
Isaac Bugueno Valdebenito, Fareeha Batool, Linda Korah, Nadia Benkirane-Jessel, Olivier Huck
American Journal of Pathology, 2018, 188 (2), pp.404-416. ⟨10.1016/j.ajpath.2017.10.014⟩
Article dans une revueAbstractPorphyromonas gingivalis is able to invade and modulate host-immune response to promote its survival. This bacterium modulates the cell cycle and programed cell death, contributing to periodontal lesion worsening. Several molecular pathways have been identified as key triggers of apoptosis, including apoptosome apoptotic peptidase activating factor 1 (APAF-1). Apaf-1 and X-linked inhibitor of apoptosis protein (Xiap) mRNA were differentially expressed between gingival samples harvested from human healthy and chronic periodontitis tissues (Apaf-1, 19.2-fold; caspase-9, 14.5-fold; caspase-3, 6.8-fold; Xiap: 2.5-fold in chronic periodontitis) (P < 0.05), highlighting their potential role in periodontitis. An increased proteic expression of APAF-1 was also observed in a murine experimental periodontitis model induced by P. gingivalis-soaked ligatures. In vitro, it was observed that P. gingivalis targets APAF-1, XIAP, caspase-3, and caspase-9, to inhibit epithelial cell death at both mRNA and protein levels. Opposite effect was observed in fibroblasts in which P. gingivalis increased cell death and apoptosis. To assess if the observed effects were associated to APAF-1, epithelial cells and fibroblasts were transfected with siRNA targeting Apaf-1. Herein, we confirmed that APAF-1 is targeted by P. gingivalis in both cell types. This study identified APAF-1 apoptosome and XIAP as intracellular targets of P. gingivalis, contributing to the deterioration of periodontal lesion through an increased persistence of the bacteria within tissues and the subversion of host-immune response.
Follicular Lymphomas of Oral Region Treated by Rituximab Monotherapy: About Two Cases
Sylvain Montaner, Noelle Weingertner, Marie-Pierre Ledoux, Marie Pierrette Chenard, Jean-Christophe Lutz, Fabien Bornert
journal of hematology, 2018, 7 (1), pp.23-28. ⟨10.14740/jh346w⟩
Article dans une revueAbstractLymphomas represent the second most common malignant lesions of the head and neck. Among them, follicular lymphomas (FLs) are the second most frequent B-cell non-Hodgkin's lymphomas. However, their incidence is rare in the oral cavity. We describe here two cases of FL with initial intra-oral presentation. The first patient was 81 years old and presented a palatal hyperplasia, covering the posterior edge of her dental removable prosthesis. After surgical excision of the lesion, the pathological diagnosis was an extra-nodal low-grade follicular lymphoma. Medical imaging assessment found a widespread but non-bulky involvement. The second patient was 38 years old and referred for asymptomatic swelling of the lower vestibule evolving for 4 months. Surgical exploration revealed a cheek lymphadenopathy infiltrated by a grade 3 FL; this patient did not have any other localization. Both patients were treated by a rituximab monotherapy with excellent response after 2 years of follow-up. Most of the time, FL affecting the oral cavity presenting as unspecific swelling, can mimic other frequent and benign oral lesions. In the absence of biopsy, both diagnosis and proper onco-hematological management may be delayed. The introduction of monoclonal antibody rituximab represents a major advance in the management of FL: it can be used as monotherapy or may be combined with chemo-immunotherapy according to histological grading, initial staging (extent, tumor mass or bulk), age and co-morbidities. These two observations show the importance of an early diagnosis regarding a chronic lesion in the oral cavity. Painless lymphadenopathy, asymptomatic swelling, aspecific mucosal lesions, or subprosthetic lesions should draw attention of any oral specialist.
Intramural atrial hematoma complicating transesophageal echocardiography during cardiac arrest
Benjamin Marchandot, François Levy, Nicola Santelmo, Paul-Michel Mertes, Olivier Morel
Heart & Lung, 2018, 47 (3), pp.248-249. ⟨10.1016/j.hrtlng.2018.01.006⟩
Article dans une revueAbstractBACKGROUND: Adequate strategies using either transthoracic (TTE) or transesophageal (TEE) echocardiography in patients receiving cardiopulmonary resuscitation (CPR) is an ongoing area of research. OBJECTIVES: As transthoracic point-of-care ultrasound (POCUS) during cardiac arrest resuscitation might result in an increased duration of interruptions in the delivery of chest compressions; the use of TEE has been proposed as an alternative. METHODS: No technical complications of either TTE nor TEE are so far being reported in the literature. RESULTS: We report the case of a left intramural atrial hematoma complicating TEE procedure during cardiac arrest. This highlights a unique and to our knowledge, first-in-man, described complicating TEE procedure during CPR. CONCLUSIONS: Further research on the safety of transesophageal echo during CRP is mandatory and the question about any potential harm of particular interest.
Bone substitutes: a review of their characteristics, clinical use, and perspectives for large bone defects management
Gabriel Fernandez de Grado, Laetitia Keller, Ysia Idoux-Gillet, Quentin Wagner, Anne-Marie Musset, Nadia Benkirane-Jessel, Fabien Bornert, Damien Offner
Journal of Tissue Engineering and Regenerative Medicine, 2018, 9, pp.204173141877681. ⟨10.1177/2041731418776819⟩
Article dans une revueAbstractBone replacement might have been practiced for centuries with various materials of natural origin, but had rarely met success until the late 19th century. Nowadays, many different bone substitutes can be used. They can be either derived from biological products such as demineralized bone matrix, platelet-rich plasma, hydroxyapatite, adjunction of growth factors (like bone morphogenetic protein) or synthetic such as calcium sulfate, tri-calcium phosphate ceramics, bioactive glasses, or polymer-based substitutes. All these substitutes are not suitable for every clinical use, and they have to be chosen selectively depending on their purpose. Thus, this review aims to highlight the principal characteristics of the most commonly used bone substitutes and to give some directions concerning their clinical use, as spine fusion, openwedge tibial osteotomy, long bone fracture, oral and maxillofacial surgery, or periodontal treatments. However, the main limitations to bone substitutes use remain the management of large defects and the lack of vascularization in their central part, which is likely to appear following their utilization. In the field of bone tissue engineering, developing porous synthetic substitutes able to support a faster and a wider vascularization within their structure seems to be a promising way of research.
Management of localized aggressive periodontitis: A 30-year follow-up
Catherine Petit, Olivier Huck, Salomon Amar, Henri Tenenbaum
Quintessence International, 2018, 49 (8), pp.615-624. ⟨10.3290/j.qi.a40660⟩
Article dans une revueAbstractThis case report describes the long-term follow-up of a patient with localized aggressive periodontitis over a 30-year period. A 16-year-old woman was referred for periodontal assessment after starting orthodontic treatment. The patient was treated initially by combined nonsurgical and antimicrobial therapy, and autotransplantation of maxillary third molars in place of maxillary first molars, followed by a regular supportive periodontal treatment program. This challenging case demonstrated that elimination of putative bacterial pathogens and long-term supportive periodontal treatments provide an effective treatment modality for localized aggressive periodontitis.
Medico-economics analysis of SBRT and surgery for early stage non small cell lung cancer.
Adien Paix, Ge Noel, Pierre-Emmanuel Falcoz, A. Filipovic Pierucci, Pierre Levy
Radiotherapy & Oncology, 2018, 127, ⟨10.1016/S0167-8140(18)30373-6⟩
Article dans une revueERS statement on harmonised standards for lung cancer registration and lung cancer services in Europe
Anna L. Rich, David R. Baldwin, Paul Beckett, Thierry Berghmans, Jeanette Boyd, Corinne Faivre-Finn, Françoise Galateau-Salle, Fernando Gamarra, Bogdan Grigoriu, Niels-Christian G. Hansen, Georgia Hardavella, Erik Jakobsen, Dragana Jovanovic, Assia Konsoulova, Gilbert Massard, John Mcphelim, Anne-Pascale Meert, Robert Milroy, Luciano Mutti, Marianne Paesmans, Michael D. Peake, Paul Martin Putora, Dirk K. M. de Ruysscher, Jean-Paul Sculier, Arnaud Scherpereel, Dragan R. Subotic, Paul van Schil, Torsten Gerriet Blum
European Respiratory Journal, 2018, 52 (6), ⟨10.1183/13993003.00610-2018⟩
Article dans une revueAbstractThe European Respiratory Society (ERS) task force for harmonised standards for lung cancer registration and lung cancer services in Europe recognised the need to create a single dataset for use in pan-European data collection and a manual of standards for European lung cancer services.The multidisciplinary task force considered evidence from two different sources, reviewing existing national and international datasets alongside the results of a survey of clinical data collection on lung cancer in 35 European countries. A similar process was followed for the manual of lung cancer services, with the task force using existing guidelines and national or international recommendations for lung cancer services to develop a manual of standards for services in Europe.The task force developed essential and minimum datasets for lung cancer registration to enable all countries to collect the same essential data and some to collect data with greater detail. The task force also developed a manual specifying standards for lung cancer services in Europe.Despite the wide variation in the sociopolitical landscape across Europe, the ERS is determined to encourage the delivery of high-quality lung cancer care. Both the manual of lung cancer services and the minimum dataset for lung cancer registration will support this aspiration.
Lung resection and immunotherapy: two allied for a new hope in lung cancer cure
Bertrand Mennecier, Anne Ollan, Gilbert Massard, Pierre-Emmanuel Falcoz
Journal of Thoracic Disease, 2018, 10 (S33), pp.S4168 - S4169. ⟨10.21037/jtd.2018.10.93⟩
Article dans une revueSeptic Shock Alters Mitochondrial Respiration of Lymphoid Cell-Lines and Human Peripheral Blood Mononuclear Cells: The Role of Plasma
Raphael Clere-Jehl, Julie Helms, Mohamad Kassem, Pierrick Le Borgne, Xavier Delabranche, Anne-Laure Charles, Bernard Geny, Ferhat Meziani, Pascal Bilbault
Shock, 2018, 51 (1), pp.97-104. ⟨10.1097/SHK.0000000000001125⟩
Article dans une revueAbstractINTRODUCTION: In septic shock patients, post-septic immunosuppression state following the systemic inflammatory response syndrome is responsible for nosocomial infections, with subsequent increased mortality. The aim of the present study was to assess the underlying cellular mechanisms of the post-septic immunosuppression state, by investigating mitochondrial functions of peripheral blood mononuclear cells (PBMCs) from septic shock patients over 7 days. MATERIALS AND METHODS: Eighteen patients admitted to a French intensive care unit for septic shock were included. At days 1 and 7, PBMCs were isolated by Ficoll density gradient centrifugation. Mitochondrial respiration of intact septic PBMCs was assessed versus control group PBMCs, by measuring O2 consumption in plasma, using high-resolution respirometry. Mitochondrial respiration was then compared between septic plasmas and control plasmas for control PBMCs, septic PBMCs and lymphoid cell-line (CEM). To investigate the role of plasma, we measured several plasma cytokines, among them HMGB1, by ELISA. RESULTS: Basal O2 consumption of septic shock PBMCs was of 8.27 +/- 3.39 and 10.48 +/- 3.99 pmol/s/10 cells at days 1 and 7 respectively, significantly higher than in control PBMCs (5.37 +/- 1.46 pmol/s/10 cells, p < 0.05). Septic patient PBMCs showed a lower response to oligomycin, suggesting a reduced ATP-synthase activity, as well as an increased response to FCCP suggesting an increased mitochondrial respiratory capacity. At 6 hours, septic plasmas showed a decreased O2 consumption of CEM (4.73 +/- 1.46 vs. 6.58 +/- 1.53, p < 0.05) as well as in control group PBMCs (1.76 +/- 0.36 vs. 2.70 +/- 0.42, p < 0.05), and triggered a decreased ATP-synthase activity but an increased response to FCCP. These differences are not explained by different cell survival. High HMGB1 levels were significantly associated with reduced PBMCs mitochondrial respiration. CONCLUSION: Septic plasma impairs mitochondrial respiration in immune cells, with a possible role of the proinflammatory protein HMGB1, leading to a subsequent compensation, probably by enzymatic activation. This compensation result is an improvement of global mitochondrial respiratory capacity, but without restoring ATP-synthase activity.
Ventricular arrhythmias and sudden cardiac arrest in Takotsubo cardiomyopathy: Incidence, predictive factors, and clinical implications
Laurence Jesel, Charlotte Berthon, Nathan Messas, Han S. Lim, Mélanie Girardey, Halim Marzak, Benjamin Marchandot, Annie Trinh, Patrick Ohlmann, Olivier Morel
Heart Rhythm, 2018, 15 (8), pp.1171-1178. ⟨10.1016/j.hrthm.2018.04.002⟩
Article dans une revueAbstractBACKGROUND: Takotsubo cardiomyopathy (TTC) is a stress-related transient cardiomyopathy. Life-threatening arrhythmias (LTA) can occur and worsen prognosis. OBJECTIVE: The purpose of this study was to assess the incidence and outcome of LTA in TTC, as well as its predictive factors and clinical implications. METHODS: We studied 214 consecutive cases of TTC over 8 years. The study cohort was divided into 2 groups: those with LTA (LTA group) and those without (non-LTA group). LTA was defined as ventricular tachycardia, ventricular fibrillation, or cardiac arrest. RESULTS: LTA occurred in 23 (10.7%) of patients mainly in the first 24 hours of hospitalization: ventricular tachycardia (n = 2), ventricular fibrillation (n = 11), cardiac arrest (n = 10: 5 asystole, 3 complete heart block, and 2 sinoatrial block). LTAs were associated with lower left ventricular ejection fraction (LVEF) and a high rate of conduction disturbances. In-hospital (39.1% vs 8.9%; P < .001) and 1-year mortality (47.8% vs 14.1%; P < .001) rates were significantly increased in the LTA group. LVEF and QRS duration >105 ms were independent predictors of LTA. In cases where a device was implanted, conduction disturbances persisted after the index event despite complete recovery of LVEF. There was no ventricular arrhythmia recurrence during follow-up. CONCLUSION: LTAs occur early in patients presenting with TTC and are associated with significantly worse short- and long-term prognosis. Left ventricular impairment and QRS duration >105 ms are independent predictors of LTA. Ventricular arrhythmias occurred in the acute phase without further recurrence recorded in hospital survivors, whereas severe conduction disorders persisted during long-term follow-up. These findings may have implications on the choice of device therapy for this specific patient subgroup.
Study of Potential Anti-Inflammatory Effects of Red Wine Extract and Resveratrol through a Modulation of Interleukin-1-Beta in Macrophages
Pauline Chalons, Souheila Amor, Flavie Courtaut, Emma Cantos-Villar, Tristan Richard, Cyril Auger, Philippe Chabert, Valérie Schni-Kerth, Virginie Aires, Dominique Delmas
Nutrients, 2018, 10 (12), pp.1856. ⟨10.3390/nu10121856⟩
Article dans une revueAbstractInflammation has been described as an initiator event of major diseases with significant impacts in terms of public health including in cardiovascular disease, autoimmune disorders, eye diseases, age-related diseases, and the occurrence of cancers. A preventive action to reduce the key processes leading to inflammation could be an advantageous approach to reducing these associated pathologies. Many studies have reported the value of polyphenols such as resveratrol in counteracting pro-inflammatory cytokines. We have previously shown the potential of red wine extract (RWE) and the value of its qualitative and quantitative polyphenolic composition to prevent the carcinogenesis process. In this study, we addressed a new effect of RWE in inflammation through a modulation of IL-1β secretion and the NLRP3 inflammasome pathway. NLRP3 inflammasome requires two signals, priming to increase the synthesis of NLRP3 and pro-IL-1β proteins and activation, which activates NLRP3. Inflammasome formation is triggered by a range of substances such as lipopolysaccharide (LPS). Using two different macrophages, one of which does not express the adaptor protein ASC (apoptosis-associated speck-like protein containing a CARD), which is essential to form active inflammasome complexes that produce IL-1β, we show that RWE decreases IL-1 β secretion and gene expression whatever line is used. Moreover, this strong reduction of pro-inflammatory IL-1β is associated with a decrease of NLRP3 and, in J774A, ASC protein expression, which depends on the choice of activator ATP or nigericin.
Reduction of Articular and Systemic Inflammation by Kava-241 in a Porphyromonas gingivalis-Induced Arthritis Murine Model
Olivier Huck, Jian You, Xianxian Han, Bin Cai, James Panek, Salomon Amar
Infection and Immunity, 2018, 86 (9), ⟨10.1128/IAI.00356-18⟩
Article dans une revueAbstractRheumatoid arthritis (RA) is an inflammatory disease that has been linked to several risk factors, including periodontitis. Identification of new anti-inflammatory compounds to treat arthritis is needed. We had previously demonstrated the beneficial effect of Kava-241, a kavain-derived compound, in the management of Porphyromonas gingivalis-induced periodontitis. The present study evaluated systemic and articular effects of Kava-241 in an infective arthritis murine model triggered by P. gingivalis bacterial inoculation and primed with a collagen antibody cocktail (CIA) to induce joint inflammation and tissular destruction. Clinical inflammation score and radiological analyses of the paws were performed continuously, while histological assessment was obtained at sacrifice. Mice exposed to P. gingivalis and a CIA cocktail and treated concomitantly with Kava-241 exhibited a reduced clinical inflammatory score and a decreased number of inflammatory cells and osteoclasts within joint. Kava-241 treatment also decreased significantly tumor necrosis factor alpha (TNF-alpha) in serum from mice injected with a Toll-like receptor 2 or 4 (TLR-2/4) ligand, P. gingivalis-lipopolysaccharide (LPS). Finally, bone marrow-derived macrophages infected with P. gingivalis and exposed to Kava-241 displayed reduced TLR-2/4, reduced mitogen-activated protein kinase (MAPK)-related signal elements, and reduced LPS-induced TNF-alpha factor (LITAF), all explaining the observed reduction of TNF-alpha secretion. Taken together, these results emphasized the novel properties of Kava-241 in the management of inflammatory conditions, especially TNF-alpha-related diseases such as infective RA.
Synthesis of a Novel Electrospun Polycaprolactone Scaffold Functionalized with Ibuprofen for Periodontal Regeneration: An In Vitro andIn Vivo Study
Fareeha Batool, David-Nicolas Morand, Lionel Thomas, Isaac Maximiliano Bugueno, Javier Aragon, Silvia Irusta, Laetitia Keller, Nadia Benkirane-Jessel, Henri Tenenbaum, Olivier Huck
Materials, 2018, 11 (4), ⟨10.3390/ma11040580⟩
Article dans une revueNeutrophil Activation During Septic Shock
Laure Stiel, Ferhat Meziani, Julie Helms
Shock, 2018, 49 (4), pp.371-384. ⟨10.1097/SHK.0000000000000980⟩
Article dans une revueAbstractIn addition to their well-known role as the cellular mediators of immunity, key other roles have been identified for neutrophils during septic shock. Importantly, neutrophils indeed play a critical role in the recently described immunothrombosis concept and in septic shock-induced coagulopathy. Septic shock is one of the most severe forms of infection, characterized by an inadequate host response to the pathogenic organism. This host response involves numerous defense mechanisms with an intense cellular activation, including neutrophil activation. Neutrophils are key cells of innate immunity through complex interactions with vascular cells and their activation may participate in systemic tissue damages. Their activation also leads to the emission of neutrophil extracellular traps, which take part in both pathogen circumscription and phagocytosis, but also in coagulation activation. Neutrophils thus stand at the interface between hemostasis and immunity, called immunothrombosis.The present review will develop a cellular approach of septic shock pathophysiology focusing on neutrophils as key players of septic shock-induced vascular cell dysfunction and of the host response, associating immunity and hemostasis. We will therefore first develop the role of neutrophils in the interplay between innate and adaptive immunity, and will then highlight recent advances in our understanding of immunothrombosis septic shock-induced coagulopathy.
Evaluation of the Quality of Dentistry Related Youtube Videos Made by Youtubers. Public Health Tool, or Large Scale Danger?
Inès Meisels, Anne-Marie Musset, Gabriel Fernandez de Grado, Damien Offner
J Epidemiol Public Health Rev, 2018, 3(3), pp.1-10. ⟨10.16966/2471-8211.166⟩
Article dans une revueAbstractContext and objectives: Considering the actual influence of YouTube, it seemed important to evaluate the quality of dentistry-related videos it offers.
Use of the Cox regression analysis in thoracic surgical research
Alice Brembilla, Anne Olland, Marc Puyraveau, Gilbert Massard, Frédéric Mauny, Pierre-Emmanuel Falcoz
Journal of Thoracic Disease, 2018, 10 (6), pp.3891-3896. ⟨10.21037/jtd.2018.06.15⟩
Article dans une revueRe: Video-assisted thoracoscopic surgery yields better outcomes than thoracotomy for anatomical lung resection in Brazil: a propensity score-matching analysis using the Brazilian Society of Thoracic Surgery database
Pierre-Emmanuel Falcoz
European Journal of Cardio-Thoracic Surgery, 2018, 53 (5), pp.999-1000. ⟨10.1093/ejcts/ezx517⟩
Article dans une revueIndividual data meta-analysis for the study of survival after pulmonary metastasectomy in colorectal cancer patients: A history of resected liver metastases worsens the prognosis
Jon Zabaleta, Tomohiko Iida, Pierre-Emmanuel Falcoz, Samer Salah, José R Jarabo, Arlene M Correa, Maria G Zampino, Takashi Matsui, Sukki Cho, Francesco Ardissone, Kazuhiro Watanabe, Michel Gonzalez, Pascal Gervaz, Jose I Emparanza, Víctor Abraira
EJSO - European Journal of Surgical Oncology, 2018, 44 (7), pp.1006-1012. ⟨10.1016/j.ejso.2018.03.011⟩
Article dans une revueAbstractObjectives: To assess the impact of a history of liver metastases on survival in patients undergoing surgery for lung metastases from colorectal carcinoma. Methods: We reviewed recent studies identified by searching MEDLINE and EMBASE using the Ovid interface, with the following search terms: lung metastasectomy, pulmonary metastasectomy, lung metastases and lung metastasis, supplemented by manual searching. Inclusion criteria were that the research concerned patients with lung metastases from colorectal cancer undergoing surgery with curative intent, and had been published between 2007 and 2014. Exclusion criteria were that the paper was a review, concerned surgical techniques themselves (without follow-up), and included patients treated non-surgically. Using Stata 14, we performed aggregate data and individual data meta-analysis using random-effect and Cox multilevel models respectively. Results: We collected data on 3501 patients from 17 studies. The overall median survival was 43 months. In aggregate data meta-analysis, the hazard ratio for patients with previous liver metastases was 1.19 (95% CI 0.90-1.47), with low heterogeneity (I-2 43%). In individual data meta-analysis, the hazard ratio for these patients was 1.37 (95% CI 1.14-1.64; p < 0.001). Multivariate analysis identified the following factors significantly affecting survival: tumour-infiltrated pulmonary lymph nodes (p < 0.001), type of resection (p = 0.005), margins (p < 0.001), carcinoembryonic antigen levels (p < 0.001), and number and size of lung metastases (both p < 0.001). Conclusions: A history of liver metastases is a negative prognostic factor for survival in patients with lung metastases from colorectal cancer. We registered the meta-analysis protocol in PROSPERO (CRD42015017838). (C) 2018 Elsevier Ltd, BASO similar to The Association for Cancer Surgery, and the European Society of Surgical Oncology. All rights reserved.
Long-term safety of bilateral targeted lung denervation in patients with COPD
Arschang Valipour, Sherwin Asadi, Christophe Pison, Marie Jondot, Romain Kessler, Khaled Bennedif, Gaetan Deslée, Margaux Verdier, Dirk-Jan Slebos, Martin Mayse
International Journal of Chronic Obstructive Pulmonary Disease, 2018, 13, pp.2163-2172. ⟨10.2147/COPD.S158748⟩
Article dans une revueAbstractBackground: Targeted lung denervation (TLD) is a novel bronchoscopic therapy for COPD which ablates parasympathetic pulmonary nerves running along the outside of the two main bronchi with the intent of inducing permanent bronchodilation. The goal of this study was to evaluate the feasibility and long-term safety of bilateral TLD during a single procedure. Patients and methods: This prospective, multicenter study evaluated 15 patients with moderate-to-severe COPD (forced expiratory volume in 1 s [FEV1] 30%-60%) who underwent bilateral TLD treatment following baseline assessment without bronchodilators. The primary safety end point was freedom from documented and sustained worsening of COPD directly attributable to TLD up to 1 year. Secondary end points included technical feasibility, change in pulmonary function tests, exercise capacity, and health-related quality of life. Follow-up continued up to 3 years for subjects who reconsented for longer-term follow-up. Results: A total of 15 patients (47% male, age 63.2±4.0 years) underwent TLD with a total procedure time of 89±16 min, and the total fluoroscopy time was 2.5±2.7 min. Primary safety end point of freedom from worsening of COPD was 100%. There were no procedural complications reported. Results of lung function analysis and exercise capacity demonstrated similar beneficial effects of TLD without bronchodilators, when compared with long-acting anticholinergic therapy at 30 days, 180 days, 365 days, 2 years, and 3 years post-TLD. Five of the 12 serious adverse events that were reported through 3 years of follow-up were respiratory related with no events being related to TLD therapy. Conclusion: TLD delivered to both lungs in a single procedure is feasible and safe with few respiratory-related adverse events through 3 years.
18F-FDG PET/CT for invasive fungal infection in immunocompromised patients
Benjamin Leroy-Freschini, G. Treglia, Xavier Argemi, Caroline Bund, Romain Kessler, Raoul Herbrecht, Alessio Imperiale
QJM: An International Journal of Medicine, 2018, 111 (9), pp.613-622. ⟨10.1093/qjmed/hcy128⟩
Article dans une revueThrombomodulin favors leukocyte microvesicle fibrinolytic activity, reduces NETosis and prevents septic shock-induced coagulopathy in rats
Julie Helms, Raphaël Clere-Jehl, Elsa Bianchini, Pierrick Le Borgne, Mélanie Burban, Fatiha Zobairi, Jean-Luc Diehl, Lelia Grunebaum, Florence Toti, Ferhat Meziani, Delphine Borgel
Annals of Intensive Care, 2017, 7, ⟨10.1186/s13613-017-0340-z⟩
Article dans une revueAbstractBackground: Septic shock-induced disseminated intravascular coagulation is responsible for increased occurrence of multiple organ dysfunction and mortality. Immunothrombosis-induced coagulopathy may contribute to hypercoagulability. We aimed at determining whether recombinant human thrombomodulin (rhTM) could control exaggerated immunothrombosis by studying procoagulant responses, fibrinolysis activity borne by microvesicles (MVs) and NETosis in septic shock. Methods: In a septic shock model after a cecal ligation and puncture-induced peritonitis (H0), rats were treated with rhTM or a placebo at H18, resuscitated and monitored during 4 h. At H22, blood was sampled to perform coagulation tests, to characterize MVs and to detect neutrophils extracellular traps (NETs). Lungs were stained with hematoxylin-eosin for inflammatory injury assessment. Results: Coagulopathy was attenuated in rhTM-treated septic rats compared to placebo-treated rats, as attested by a significant decrease in procoagulant annexin A5(+)-MVs and plasma procoagulant activity of phospholipids and by a significant increase in antithrombin levels (84 +/- 8 vs. 64 +/- 6%, p < 0.05), platelet count (582 +/- 157 vs. 319 +/- 91 x 10(9)/L, p < 0.05) and fibrinolysis activity borne by MVs (2.9 +/- 0.26 vs. 0.48 +/- 0.29 U/mL urokinase, p < 0.05). Lung histological injury score showed significantly less leukocyte infiltration. Decreased procoagulant activity and lung injury were concomitant with decreased leukocyte activation as attested by plasma leukocyte-derived MVs and NETosis reduction after rhTM treatment (neutrophil elastase/DNA: 93 +/- 33 vs. 227 +/- 48 and citrullinated histones H3/DNA: 96 +/- 16 vs. 242 +/- 180, mOD for 10(9) neutrophils/L, p < 0.05). Conclusion: Thrombomodulin limits procoagulant responses and NETosis and at least partly restores hemostasis control during immunothrombosis. Neutrophils might thus stand as a promising therapeutic target in septic shock-induced coagulopathy.
Microparticules membranaires et maladies respiratoires [= Membranous microparticles and respiratory disease]
B. Renaud-Picard, J. Toussaint, A. Leclercq, J. Reeb, Laurence Kessler, Florence Toti, Romain Kessler
Revue des maladies respiratoires, 2017, 34 (10), pp.1058-1071. ⟨10.1016/j.rmr.2017.10.005⟩
Article dans une revueAbstractMicroparticles (MP) are plasmic membrane fragments released from cells after physiological stimulation or stress conditions like inflammation or infection. Their production is correlated to the rate of cell apoptosis. All types of cells can produce MP but they are produced mainly by platelets, endothelial cells, and leukocytes. They carry many bio-active molecules on their surface, specific to the parental cell, giving them the ability to be biomarkers and bio-effectors. MP are present in circulating blood, tissues and many biological fluids. Circulating MP levels can change during the course of many diseases. They have been the subject of many studies in the fields of cardiovascular disease and oncology. In the lungs, they are present in circulating blood and in the airways. They seem to have a role in pulmonary homeostasis in physiological situations and also in the expression of several disease processes. In this review of the literature, we were interested in the quantitative and qualitative variations in MP and their impact in airway diseases like chronic obstructive pulmonary disease (COPD) and asthma, pulmonary fibrosis and pulmonary hypertension.
Association of sleep apnoea syndrome and autonomic neuropathy in type 1 diabetes
Laurent Meyer, Morgane Massuyeau, Clémence Canel, Thibault Bahougne, Parisa Assemi, Anne-Elisabeth Perrin, Elisabeth Wurtz, Benjamin Renaud-Picard, Carmen Iamandi, Romain Kessler, Laurence Kessler
Diabetes & Metabolism, 2017, 45 (2), pp.206-209. ⟨10.1016/j.diabet.2017.10.011⟩
Article dans une revueMultidisciplinary Tumor Board Decision Making for Postoperative Radiotherapy in Thymic Epithelial Tumors: Insights from the RYTHMIC Prospective Cohort
Clémence Basse, Sébastien Thureau, Suzanna Bota, Eric Dansin, Pascal-Alexandre Thomas, Eric Pichon, Hervé Léna, Carole Massabeau, Christelle Clément-Duchêne, Gilbert Massard, Virginie Westeel, Xavier Quantin, Youssef Oulkhouir, Delphine Lerouge, Serge Danhier, Ronan Tanguy, François Thillays, Cécile Le Pechoux, Bernard Dubray, Luc Thiberville, Benjamin Besse, Nicolas Girard
Journal of Thoracic Oncology, 2017, 12 (11), pp.1715 - 1722. ⟨10.1016/j.jtho.2017.07.023⟩
Article dans une revueAbstractThymic epithelial tumors (TETs) are rare intrathoracic malignancies for which surgery represents the mainstay of the treatment. Current practice for postoperative radiotherapy (PORT) is highly variable, and there is a lack of prospective, high level evidence. Réseau Tumeurs Thymiques et Cancer (RYTHMIC) is the nationwide network for TETs in France. Established in 2012, it prospectively collects data on all TET patients, for whom management is discussed at a national multidisciplinary tumor board (MTB). We assessed whether PORT decisions at the MTB were in accordance with RYTHMIC guidelines and ultimately implemented in patients.
Antitumoral effect of low molecular weight heparin in localized lung cancer. A randomized phase III controlled trial
Benjamin Besse, Philippe Girard, Hélène Doubre, Anaïs Charles-Nelson, Sandro Aquilanti, Armine Izadifar, Reza Azarian, Isabelle Monnet, Corinne Lamour, Renaud Descourt, Gérard Oliviero, Laurent Taillade, Christos Chouaid, Frederique Giraud, Pierre-Emmanuel Falcoz, Marie-Pierre Revel, Virginie Westeel, Marco Alifano, Gilles Chatellier, Guy Meyer
Annals of Oncology, 2017, 28, ⟨10.1093/annonc/mdx669.002⟩
Article dans une revueSynergistic Effect of the Combination of Polyphenols with Gemcitabineon Pancreatic Cancer Cell line AsPC-1
Sarah Hassan, Jean Peluso, Guy Fuhrmann, Geneviève Ubeaud-Sequier
Journal of Pharmaceutical Research, 2017, 2 (1), ⟨10.33140/JPR/02/01/00004⟩
Article dans une revueAbstractIn our diet, polyphenols are micronutrients with an important role in the prevention of degenerative diseases such as cancer and cardiovascular diseases. Particularly, Pancreatic cancer is one of the most aggressive cancers, with only about 5% of patients surviving 5 years past the initial diagnosis. Despite advances with current chemotherapy combinations, overall survival outcomes are still require novel therapeutic approaches. Here, we examined the efficacy of combined treatments of polyphenols and gemcitabine the standard of treatment for patients with metastatic pancreatic cancer in human pancreatic cancer cells. For that purpose, the pro-apoptic effects of gemcitabine were studied on the human pancreatic cell line AsPC1 in presence or absence of several polyphenols, in order to evaluate if they latter are able to potentialize gemcitabine cytotoxicity. Our study aims to investigate the implication of MDR1 (multidrug transporter)in resistance to gemcitabine and if the studied polyphenol could target this drug efflux pump in AsPC-1 cells by flow cytometric analysis. We observed that 5µg/ml gemcitabine in combination with 15 µg/ml of selected polyphenol (Catechin, Quercetin, Bergamottin, Rhamnetin) was more effective than gemcitabine alone, by increased in the percentage of dead cells up to 60%. Morever our results demonstrated that some polyphenols (Quercetin) inhibit the efflux activity of MDR1. Our study in vitro suggests therefore that chemotherapy with gemcitabine might be significantly increased upon combination with specific polyphenol. In conclusion, polyphenols may be promising agents for novel combination therapy since they potentialize the cytotoxic activity of gemcitabine to eradicate pancreatic cancer and therefore the cellular resistance.
Chitosan-based nanocomposites for the repair of bone defects
Laetitia Keller, A. Regiel-Futyra, M. Gimeno, Sandy Eap, G. Mendoza, V. Andreu, Quentin Wagner, A. Kyziol, V. Sebastian, G. Stochel, M. Arruebo, Nadia Jessel
Nanomedicine, 2017, 13 (7), pp.2231-2240. ⟨10.1016/j.nano.2017.06.007⟩
Article dans une revueAbstractChitosan scaffolds of different deacetylation degrees, average molecular weights and concentrations reinforced with silica nanoparticles were prepared for bone tissue regeneration. The resulting nanocomposites showed similar pore sizes (<300 mum) regardless the deacetylation degree and concentration used in their formulation. Their mechanical compression resistance was increased by a 30% with the addition of silica nanoparticles as nanofillers. The biocompatibility of the three-dimensional chitosan scaffolds was confirmed by the Alamar Blue assay in human primary osteoblasts as well as the formation of cell spheroids indicative of their great potential for bone regeneration. In vivo implantation of the scaffolds in a mice calvaria defect model provided substantial evidences of the suitability of these nanocomposites for bone tissue engineering showing a mature and dense collagenous tissue with small foci of mineralization, vascularized areas and the infiltration of osteoblasts and osteoclasts. Nevertheless, mature bone tissue formation was not observed after eight weeks of implantation.
Correspondence : Reply
Michel Kindo, Stephanie Perrier, Tam Hoang Minh, Jean-Philippe Mazzucotelli
Annals of Thoracic Surgery, 2017, 104 (4), pp.1433-1434. ⟨10.1016/j.athoracsur.2017.03.046⟩
Article dans une revueTransatlantic Editorial
Gilbert Massard, Mara Antonoff, Julie-Lynn Noel, Alessandro Brunelli, Farhood Farjah, Michael Lanuti, Dirk van Raemdonck
Annals of Thoracic Surgery, 2017, 104 (4), pp.1103-1107. ⟨10.1016/j.athoracsur.2017.04.068⟩
Article dans une revueTransatlantic editorial
Gilbert Massard, Mara Antonoff, Julie-Lynn Noel, Alessandro Brunelli, Farhood Farjah, Michael Lanuti, Dirk van Raemdonck
The Journal of Thoracic and Cardiovascular Surgery, 2017, 154 (4), pp.1387-1392. ⟨10.1016/j.jtcvs.2017.07.019⟩
Article dans une revueIUPHAR: Immunology, metabolism and natural products
Michael Spedding, Valerie Schini-Kerth, Cherry Wainwright, Guanhua Du
Biochemical Pharmacology, 2017, 139, pp.107-107. ⟨10.1016/j.bcp.2017.06.055⟩
Article dans une revueEndothelium-independent vasorelaxant effect of Thymus linearis via inhibition of phosphodiesterases in porcine coronary artery
A Alamgeer, Cyril Auger, Philippe Chabert, C. Lugnier, Valérie B Schini-Kerth
Biochemical Pharmacology, 2017, 139, pp.120-120. ⟨10.1016/j.bcp.2017.06.099⟩
Article dans une revueEndothelium-dependent relaxation by a hydroethanolic extract of Adansonia digitata leaves in porcine coronary artery rings and rat thoracic aorta, mesenteric, carotid artery rings: Role of NO and EDH
Mbaye Sene, Modou Oumy Kane, Hyun-Ho Lee, Cyril Auger, Philippe Chabert, Catherine Vonthron-Senecheau, Aminata Sall Diallo, Valerie B. Schini-Kerth
Biochemical Pharmacology, 2017, 139, pp.113-113. ⟨10.1016/j.bcp.2017.06.076⟩
Article dans une revueThe omega-3 EPA:DHA 6:1 formulation improves ageing-related blunted endothelium-dependent relaxations and increased contractile responses in the mesenteric artery: Role of oxidative stress and cyclooxygenases
Muhammad Akmal Farooq, Lamia Amoura, Sébastien Gaertner, Zahid Rasul Niazi, Sin-Hee Park, Abdul Wahid Qureshi, Min-Ho Oak, Florence Toti, Valerie B. Schini-Kerth, Cyril Auger
Biochemical Pharmacology, 2017, 139, pp.122-122. ⟨10.1016/j.bcp.2017.06.103⟩
Article dans une revueAn anthocyanin-rich blackcurrant extract induced NO-mediated relaxation in coronary artery rings and eNOS phosphorylation in cultured endothelial cells: Role of sodium-glucose cotrans-porters 1 and 2
Hyunho Lee, Sonia Khemais-Benkhiat, Philippe Chabert, Cyril Auger, Sin-Hee Park, Claire Kevers, Joel Pincemail, Min-Ho Oak, Valérie B. Schini-Kerth
Biochemical Pharmacology, 2017, 139, pp.121-121. ⟨10.1016/j.bcp.2017.06.100⟩
Article dans une revueLate Detection of Left Ventricular Dysfunction Using Two-Dimensional and Three-Dimensional Speckle-Tracking Echocardiography in Patients with History of Nonsevere Acute Myocarditis
Thibault Caspar, Marie Fichot, Mickaël Ohana, Soraya El Ghannudi, Olivier Morel, Patrick Ohlmann
Journal of The American Society of Echocardiography, 2017, 30 (8), ⟨10.1016/j.echo.2017.04.002⟩
Article dans une revueA benchmarking project on the quality of previous guidelines about the management of malignant pleural effusion from the European Society of Thoracic Surgeons (ESTS) Pleural Diseases Working Group
Luca Bertolaccini, Benedetta Bedetti, Alessandro Brunelli, Katerina Marinova, Federico Raveglia, Gaetano Rocco, Yaron Shargall, Piergiorgio Solli, Gonzalo Varela, Kostas Papagiannopoulos, Jaroslaw Kuzdzal, Gilbert Massard, Enrico Ruffini, Pierre-Emmanuel Falcoz, Carlos Martinez-Barenys, Isabelle Opitz, Hasan F. Batirel, Alper Toker, Marco Scarci
European Journal of Cardio-Thoracic Surgery, 2017, 52 (2), pp.356-362. ⟨10.1093/ejcts/ezx089⟩
Article dans une revueAbstractOBJECTIVES: In the European Society of Thoracic Surgeons (ESTS) survey about management of malignant pleural effusions (MPE), 56% of respondents are not informed of any relevant clinical guidelines and 52%, who are aware of the existence of guidelines, declared that they are in need of updating or revision. The ESTS Pleural Diseases Working Group developed a benchmarking project on quality of previous guidelines on the management of MPE. METHODS: The Appraisal of Guidelines for Research and Evaluation (AGREE) II instrument was used to assess each guideline. Each item was scored on a 7-point scale. Scores for each domain were calculated. Economic data for the nations which have issued the guidelines were collected from the Organisation for Economic Cooperation and Development health statistics database. RESULTS: Six guidelines fitted the inclusion criteria and were assessed. Five out of 6 guidelines were produced by a multinational collaboration. Observers would recommend only 2 guidelines with minimal modification. Two areas that received the best score were clarity of presentation and scope and purpose (objectives and health questions target population). The applicability of guideline domain had the lowest score. Multivariate analysis demonstrated that clarity of presentation, international guidelines and publication through medical journal were related to improved scores. A strong correlation was observed between the measures of economic status. CONCLUSIONS: The quality of guidelines assessed by the AGREE II criteria was found to be extremely variable. Guidelines achieving higher AGREE II scores were more likely to come from the European Union with the direct involvement of scientific societies in their development. It was also recognized that some fundamental unanswered questions remain about the management of MPE.
Report from the European Society of Thoracic Surgeons Database 2017: patterns of care and perioperative outcomes of surgery for malignant lung neoplasm
Michele Salati, Alessandro Brunelli, Herbert Decaluwe, Zalan Szanto, Marcel Dahan, Gonzalo Varela, Pierre-Emmanuel Falcoz
European Journal of Cardio-Thoracic Surgery, 2017, 52 (6), pp.1041-1048. ⟨10.1093/ejcts/ezx272⟩
Article dans une revueAbstractOBJECTIVES: The European Society of Thoracic Surgeons (ESTS) registry was created 10 years ago and represents an international database collecting thoracic surgery procedures from European contributors. The purpose of the present report was to offer an overview of baseline and surgical characteristics and outcomes of patients submitted to lung resections for malignant lung disease as derived from the ESTS registry. METHODS: We retrieved data about all lung resections from 2007 to 2016 performed for primary and metastatic (secondary) lung cancer. We evaluated the baseline characteristics and the surgical management of this population. Within the subgroup of patients affected by primary lung cancer, we described the preoperative mediastinal staging management and the final pathological stage of disease. Finally, we analysed the morbidity and mortality rates for the cohort of patients submitted to anatomic lung resections for primary or secondary lung cancer. Outcomes were also evaluated in relation to several risk factors: type of resection, age, comorbidity, predicted postoperative forced expiratory volume in 1 s and surgical approach. RESULTS: We selected 62 774 patients submitted to lung resections (male 66.5%, median age 64 years). For the entire population, median predicted postoperative forced expiratory volume in 1 s was 73.3% (interquartile range: 59, 87.6), 33.8% of patients had cardiac comorbidities and 17.3% had other comorbidities. Among the patients with primary lung cancer (51 931 patients), 50.8% had Stage I disease and 23.2% Stage II disease; preoperative invasive mediastinal staging was performed in 70.3% of patients with computed tomography scan nodal enlargement and positron emission tomography scan nodal uptake. After anatomical lung resection (51 756 patients), overall morbidity was 18.5% and mortality (30 days or in-hospital) was 2.6%. Extent of resection, age >= 75 years, presence of cardiac comorbidity, predicted postoperative forced expiratory volume in 1 s <70% and open approach instead of video-assisted thoracic surgery were associated with worse outcomes. CONCLUSIONS: The results of the present report represent reliable European benchmarks for comparing the activities and outcomes of single institutions and surgeons at an international level.
Development of a multivariate prediction model for early-onset bronchiolitis obliterans syndrome and restrictive allograft syndrome in lung transplantation
Angela Koutsokera, Pierre J. Royer, Jean P. Antonietti, Andreas Fritz, Christian Benden, John D. Aubert, Adrien Tissot, Karine Botturi, Antoine Roux, Martine L. Reynaud-Gaubert, Romain Kessler, Claire Dromer, Sacha Mussot, Herve Mal, Jean-Francois Mornex, Romain Guillemain, Christiane Knoop, Marcel Dahan, Paola M. Soccal, Johanna Claustre, Edouard Sage, Carine Gomez, Antoine Magnan, Christophe Pison, Laurent P. Nicod, Kian Fan Chung, Mark Wewers, Gunnar N Hillerdal
Frontiers in Medicine, 2017, 4, ⟨10.3389/fmed.2017.00109⟩
Article dans une revueAbstractBackground: Chronic lung allograft dysfunction and its main phenotypes, bronchiolitis obliterans syndrome (BOS) and restrictive allograft syndrome (RAS), are major causes of mortality after lung transplantation (LT). RAS and early-onset BOS, developing within 3 years after LT, are associated with particularly inferior clinical outcomes. Prediction models for early-onset BOS and RAS have not been previously described. Methods: LT recipients of the French and Swiss transplant cohorts were eligible for inclusion in the SysCLAD cohort if they were alive with at least 2 years of follow-up but less than 3 years, or if they died or were retransplanted at any time less than 3 years. These patients were assessed for early-onset BOS, RAS, or stable allograft function by an adjudication committee. Baseline characteristics, data on surgery, immunosuppression, and year-1 follow-up were collected. Prediction models for BOS and RAS were developed using multivariate logistic regression and multivariate multinomial analysis. Results: Among patients fulfilling the eligibility criteria, we identified 149 stable, 51 BOS, and 30 RAS subjects. The best prediction model for early-onset BOS and RAS included the underlying diagnosis, induction treatment, immunosuppression, and year-1 class II donor-specific antibodies (DSAs). Within this model, class II DSAs were associated with BOS and RAS, whereas pre-LT diagnoses of interstitial lung disease and chronic obstructive pulmonary disease were associated with RAS. Conclusion: Although these findings need further validation, results indicate that specific baseline and year-1 parameters may serve as predictors of BOS or RAS by 3 years post-LT. Their identification may allow intervention or guide risk stratification, aiming for an individualized patient management approach.
Temporal Trends in Transcatheter Aortic Valve Replacement in France: FRANCE 2 to FRANCE TAVI
Vincent Auffret, Thierry Lefevre, Eric Belle, Hélène Eltchaninoff, Bernard Iung, René Koning, Pascal Motreff, Pascal Leprince, Jean Philippe Verhoye, Thibaut Manigold, Geraud Souteyrand, Dominique Boulmier, Patrick Joly, Frédéric Pinaud, Dominique Himbert, Jean Philippe Collet, Gilles Rioufol, Said Ghostine, Olivier Bar, Alain Dibie, Didier Champagnac, Lionel Leroux, Frédéric Collet, Emmanuel Teiger, Olivier Darremont, Thierry Folliguet, Florence Leclercq, Thibault Lhermusier, Patrick Olhmann, Bruno Huret, Luc Lorgis, Laurent Drogoul, Bernard Bertrand, Christian Spaulding, Laurent Quilliet, Thomas Cuisset, Max Delomez, Farzin Beygui, Philippe Claudel, Alain Hepp, Arnaud Jégou, Antoine Gommeaux, Anfani Mirode, Luc Christiaens, Charles Christophe, Claude Cassat, Damien Metz, Lionel Mangin, Karl Isaaz, Laurent Jacquemin, Philippe Guyon, Christophe Pouillot, Serge Makowski, Vincent Bataille, Josep Rodes-Cabau, Martine Gilard, Hervé Le Breton, Marc Laskar, Bernard Chevalier, Thomas Hovasse, Patrick Donzeau Gouge, Arnaud Farge, Mauro Romano, Laurent Leborgne, Erik Bouvier, Marcel Peltier, Bertrand Cormier, Jean Bauchart, Cédric Delhaye, David Houpe, Robert Robert, Fabrice Leroy, Arnaud Sudre, Francis Juthier, Mohamed Koussa, Thomas Modine, Natacha Rousse, Jean Auffray, Richard Richard, Jacques Berland, Mathieu Godin, Jean Bessou, Vincent Letocart, Jean François Roussel, Nicolas Combaret, Nicolas D’ostrevy, Andrea Innorta, Guillaume Clerfond, Charles Vorilhon, Marc Bedossa, Guillaume Leurent, Amedeo Anselmi, Majid Harmouche, Erwan Donal, Jacques Bille, Rémi Houel, Wissam Abi Khalil, Stéphane Delepine, Olivier Fouquet, Frédéric Roule, Jérémie Abtan, Marina Urena, Soleiman Alkhoder, Walid Ghodbane, Dimitri Arangalage, Eric Brochet, Coppelia Goublaire, Rémi Choussat, Guillaume Lebreton, Chiro Mastrioanni, Raphaël Dauphin, Olivier Dubreuil, Guy Durand de Gevigney, Gérard Finet, Brahim Harbaoui, Sylvain Ranc, Fadi Farhat, Olivier Jegaden, Jean Obadia, Matteo Pozzi, Sahbi Fradi, Alexandre Azmoun, Martin Kauffmann, Didier Blanchard, Stephan Chassaing, Didier Chatel, Olivier Le Page, Arnaud Tauran, Didier Bruere, Laurent Bodson, Yvon Meurisse, Aurélie Seemann, Nicolas Amabile, Simon Simon, Luc Drieu, Alice Ohanessian, Aurélie Veugeois, Matthieu Debauchez, Konstantinos Zannis, Daniel Czitrom, Chrystelle Diakov, François Raoux, Yves Lienhart, Patrick Staat, Oualid Zouaghi, Vincent Doisy, Philippe Frieh, Fabrice Wautot, Julie Dementhon, Olivier Garrier, Fadi Jamal, Pierre Leroux, Frédéric Casassus, Benjamin Séguy, Laurent Barandon, Louis Labrousse, Julien Peltan, Claire Cornolle, Marina Dijos, Stephane Lafitte, Gilles Bayet, Claude Charmasson, Alain Vaillant, Jacques Vicat, Marie Paule Giacomoni, Eric Bergoend, Céline Zerbib, Jean Louis Leymarie, Philippe Clerc, Emmanuel Choukroun, Nicolas Elia, Philippe Grimaud, Philippe Guibaud, Stéphane Wroblewski, Eric Abergel, Emmanuel Bogino, Patrick Dehant, Marc Simon, Michel Angioi, Julien Lemoine, Simon Lemoine, Batric Popovic, Pablo Maureira, Olivier Huttin, Christine Selton Suty, Guillaume Cayla, Delphine Delseny, Gilles Levy, Eric Maupas, François Rivalland, Gabriel Robert, Laurent Schmutz, Frédéric Targosz, Bernard Albat, Arnaud Dubar, Nicolas Durrleman, Thomas Gandet, Emmanuel Munos, Stéphane Cade, Frédéric Cransac, Frédéric Bouisset, Etienne Grunenwald, Marc Bertrand, Pauline Fournier, Olivier Morel, Patrick Ohlmann, Michel Kindo, Minh Tam Hoang, Hélène Petit, Hafida Samet, Anne Trinh, Guillaume Lecoq, Jean François Morelle, Pascal Richard, Thierry Derieux, Emmanuel Monier, Cédric Joret, Olivier Bouchot, Pierre Meyer, Stéphane Lopez, Michel Tapia, Jacques Teboul, Pierre Elbeze, Alain Mihoubi, Gérald Vanzetto, Olivier Wittenberg, Vincent Bach, Cécile Martin, Carole Sauier, Charlotte Casset, Philippe Castellant, Eric Bezon, Jean Choplain, Ahmed Kallifa, Bahaa Nasr, Yannick Jobic, Antoine Lafont, Jean Pagny, Ramzi Abi Akar, Jean Fabiani, Rachid Zegdi, Alain Berrebi, Tania Puscas, Bernard Desveaux, Fabrice Ivanes, Thierry Bourguignon, Blandine Aupy, Romain Perault, Jean Bonnet, Marc Lambert, Dominique Grisoli, Nicolas Jaussaud, Erwan Salaün, Amine Laghzaoui, Christine Savoye, Mathieu Bignon, Vincent Roule, Rémy Sabatier, Calin Ivascau, Vladimir Saplacan, Eric Saloux, Damien Bouchayer, Guillaume Tremeau, Camille Diab, Joel Lapeze, Franck Pelissier, Thomas Sassard, Catherine Matz, Nicolas Monsarrat, Ivan Carel, Franck Sibellas, Alain Curtil, Grégoire Dambrin, Xavier Favereau, Gabriel Ghorayeb, Laurent Guesnier, Wassim Khoury, Bruno Pouzet, Claude Vaislic, Riadh Cheikh-Khelifa, Loïc Hilpert, Philippe Maribas, Gery Hannebicque, Philippe Hochart, Marc Paris, Max Pecheux, Olivier Fabre
Journal of the American College of Cardiology, 2017, 70 (1), pp.42-55. ⟨10.1016/j.jacc.2017.04.053⟩
Article dans une revueAbstractBackground - Transcatheter aortic valve replacement (TAVR) is standard therapy for patients with severe aortic stenosis who are at high surgical risk. However, national data regarding procedural characteristics and clinical outcomes over time are limited. Objectives - The aim of this study was to assess nationwide performance trends and clinical outcomes of TAVR during a 6-year period. Methods - TAVRs performed in 48 centers across France between January 2013 and December 2015 were prospectively included in the FRANCE TAVI (French Transcatheter Aortic Valve Implantation) registry. Findings were further compared with those reported from the FRANCE 2 (French Aortic National CoreValve and Edwards 2) registry, which captured all TAVRs performed from January 2010 to January 2012 across 34 centers. Results - A total of 12,804 patients from FRANCE TAVI and 4,165 patients from FRANCE 2 were included in this analysis. The median age of patients was 84.6 years, and 49.7% were men. FRANCE TAVI participants were older but at lower surgical risk (median logistic European System for Cardiac Operative Risk Evaluation [EuroSCORE]: 15.0% vs. 18.4%; p < 0.001). More than 80% of patients in FRANCE TAVI underwent transfemoral TAVR. Transesophageal echocardiography guidance decreased from 60.7% to 32.3% of cases, whereas more recent procedures were increasingly performed in hybrid operating rooms (15.8% vs. 35.7%). Rates of Valve Academic Research Consortium-defined device success increased from 95.3% in FRANCE 2 to 96.8% in FRANCE TAVI (p < 0.001). In-hospital and 30-day mortality rates were 4.4% and 5.4%, respectively, in FRANCE TAVI compared with 8.2% and 10.1%, respectively, in FRANCE 2 (p < 0.001 for both). Stroke and potentially life-threatening complications, such as annulus rupture or aortic dissection, remained stable over time, whereas rates of cardiac tamponade and pacemaker implantation significantly increased. Conclusions - The FRANCE TAVI registry provided reassuring data regarding trends in TAVR performance in an all-comers population on a national scale. Nonetheless, given that TAVR indications are likely to expand to patients at lower surgical risk, concerns remain regarding potentially life-threatening complications and pacemaker implantation. (Registry of Aortic Valve Bioprostheses Established by Catheter [FRANCE TAVI]; NCT01777828).
Febrile headache and leg weakness as the initial symptoms of tickborne encephalitis
Pierrick Le Borgne, Claudia Brunhuber, Pascal Bilbault
BMJ Case Reports, 2017, 2017, ⟨10.1136/bcr-2017-220841⟩
Article dans une revueMedicoeconomic analysis of lobectomy using thoracoscopy versus thoracotomy for lung cancer: a study protocol for a multicentre randomised controlled trial (Lungsco01).
Pierre-Benoît Pagès, Halim Abou Hanna, Anne-Claire Bertaux, Ludwig Serge Serge Aho, Pierre Magdaleinat, Marc Baste, Marc Filaire, Richard de Latour, Jalal Assouad, François Tronc, Christophe Jayle, Jérome Mouroux, Pascal-Alexandre Thomas, Pierre-Emmanuel Falcoz, Charles-Henri Marty-Ané, Alain Bernard
BMJ Open, 2017, 7 (6), pp.e012963. ⟨10.1136/bmjopen-2016-012963⟩
Article dans une revueAbstractIntroduction In the last decade, video-assisted thoracoscopic surgery (VATS) lobectomy for non-small cell lung cancer (NSCLC) has had a major effect on thoracic surgery. Retrospective series have reported benefits of VATS when compared with open thoracotomy in terms of postoperative pain, postoperative complications and length of hospital stay. However, no large randomised control trial has been conducted to assess the reality of the potential benefits of VATS lobectomy or its medicoeconomic impact. Methods and analysis The French National Institute of Health funded Lungsco01 to determine whether VATS for lobectomy is superior to open thoracotomy for the treatment of NSCLC in terms of economic cost to society. This trial will also include an analysis of postoperative outcomes, the length of hospital stay, the quality of life, long-term survival and locoregional recurrence. The study design is a two-arm parallel randomised controlled trial comparing VATS lobectomy with lobectomy using thoracotomy for the treatment of NSCLC. Patients will be eligible if they have proven or suspected lung cancer which could be treated by lobectomy. Patients will be randomised via an independent service. All patients will be monitored according to standard thoracic surgical practices. All patients will be evaluated at day 1, day 30, month 3, month 6, month 12 and then every year for 2 years thereafter. The recruitment target is 600 patients. Ethics and dissemination The protocol has been approved by the French National Research Ethics Committee (CPP Est I: 09/06/2015) and the French Medicines Agency (09/06/2015). Results will be presented at national and international meetings and conferences and published in peer-reviewed journals. Trial registration number NCT02502318.
Endothelial Microparticles Released by Activated Protein C Protect Beta Cells through EPCR/PAR1 and Annexin A1/FPR2 Pathways
Guillaume Kreutter, Mohamad Kassem, Ali El Habhab, Philippe Baltzinger, Blandine Yver, Fatiha Zobairi, Genevieve Ubeaud-Sequier, Laurence Kessler, Florence Toti
Diabetes, 2017, 66
Article dans une revueInsulin Secreting Cell-Derived Microparticles as Biomarkers of Early Pancreatic Islet Graft Dysfunction
Lamia Amoura, Blandine Yver, Fatiha E-Ghazouani, Nicolas Meyer, Se Sahraoui, Laurence Kessler, Florence Toti
Diabetes, 2017, 66
Article dans une revueLeukocyte-Derived Microparticles Favor Endothelial Senescence: A New Mechanism Possibly Contributing to IBMIR in Islet Transplantation
Ali El Habhab, Mohamad Kassem, Guillaume Kreutter, Malak Abbas, Blandine Yver, Fatiha Zobairi, Valerie Schini-Kerth, Florence Toti, Laurence Kessler
Diabetes, 2017, 66
Article dans une revueLongitudinal 2D strain can help diagnose coronary artery disease in patients with suspected non-ST-elevation acute coronary syndrome but apparent normal global and segmental systolic function
Thibault Caspar, Hafida Samet, Mickaël Ohana, Philippe Germain, Soraya El Ghannudi, Samy Talha, Olivier Morel, Patrick Ohlmann
International Journal of Cardiology, 2017, 236, pp.91-94. ⟨10.1016/j.ijcard.2017.02.068⟩
Article dans une revueDoes perioperative chemotherapy improve survival in patients with resectable lung metastases of colorectal cancer?
Francesco Guerrera, Pierre-Emmanuel Falcoz, Stephane Renaud, Gilbert Massard
Interactive Cardiovascular and Thoracic Surgery, 2017, 24 (5), pp.789-791. ⟨10.1093/icvts/ivw389⟩
Article dans une revueAbstractA best evidence topic was constructed according to a structured protocol. The question addressed was whether the administration of perioperative chemotherapy (CT) is effective in improving survival in patients with resectable lung metastases of colorectal cancer (CRC). Of the 44 papers found using a report search, 6 investigated the effect of perioperative CT (adjuvant-CT, preoperative-CT or both) on outcomes in patients undergoing lung metastasectomy for CRC. These 6 studies presented the best evidence to answer the clinical question. The authors, journal, date and country of publication, study type, group studied, relevant outcomes and results of these papers are given. Overall, none of the studies were successful in demonstrating that CT had an independent effect on overall survival in patients undergoing lung resection surgery for CRC metastasis. Indeed, beneficial outcomes have been shown in particular sub-groups of patients: multiple metastases, metachronous lung metastasis, low-risk patients, particular molecular marker expression and oxaliplatin-based regimen. All the studies indicated a benefit in disease-free survival or progression-free survival. Administration of tailored perioperative CT might be effective after an accurate patient selection. We conclude that the current evidence does not support the administration of unselective perioperative CT in patients with resectable lung metastases of colorectal cancer.
Epidermal growth factor receptor mutations are linked to skip N2 lymph node metastasis in resected non-small-cell lung cancer adenocarcinomas
Francesco Guerrera, Stéphane Renaud, Fabrizio Tabbó, Anne-Claire Voegeli, Pier Luigi Filosso, Michèle Legrain, Monica Boita, Mickaël Schaeffer, Michèle Beau-Faller, Enrico Ruffini, Pierre-Emmanuel Falcoz, Giorgio Inghirami, Alberto Oliaro, Gilbert Massard
European Journal of Cardio-Thoracic Surgery, 2017, 51 (4), pp.680-688. ⟨10.1093/ejcts/ezw362⟩
Article dans une revueAbstractObjectives: The impact of skip N2 metastases (i.e. N2 lymph node metastases without N1) on survival in surgically resected non-small lung cancer remains an intriguing and rarely investigated topic. The goal of our study was to elucidate (i) skip N2 influence on overall survival (OS) and time to recurrence (TTR) in patients with resected lung adenocarcinoma and (ii) its link with epidermal growth factor receptor ( EGFR ) and v-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog ( KRAS ) mutations. Methods: A retrospective analysis of 279 consecutive patients with lung pN2 adenocarcinoma, operated in two institutions between 2003 and 2013, was conducted. OS and TTR were calculated using the Kaplan-Meier method. Crude and multivariable-adjusted comparisons by skip N2 for OS and TTR were performed using the Cox method with shared frailty (accounting for the within-centre correlation). Associations between skip N2 metastasis, clinicopathological characteristics and EGFR and KRAS mutations were investigated using the Fisher exact test and Cramér's V -test. Results: The mean age at the time of surgery was 63 years (±12), and the median follow-up time was 36 months (min 3; max 101). Skip N2 was observed in 54 patients (19%). EGFR mutations were observed in 38 patients (14%); KRAS mutations were seen in 86 patients (31%). Patients with skip N2 metastasis were predominantly non-smokers ( P = 0.001), underwent segmentectomy or limited resections ( P = 0.004) and were not submitted to adjuvant therapy ( P = 0.022). Moreover, there was a correlation between EGFR mutations and skip N2 (Cramér's V : 0.25, P < 0.001). Indeed, EGFR mutations were significantly more frequent in skip N2 tumours (33%) compared with non-skip tumours (10%), P < 0.001. No correlation between skip N2 and KRAS mutations was observed (Cramér's V : 0.05, P = 0.46). The multivariable-adjusted model showed a significant skip N2 protective effect on OS (hazard ratio, HR 0.503; P = 0.014; 95% confidence interval, CI: 0.291-0.8704) but not on TTR (HR 0.788; P = 0.446; 95% CI: 0.427-1.454). Conclusions: In our series, lung adenocarcinoma skip N2 metastasis demonstrated a favourable prognosis. The presence of EGFR mutations could have significance in the better survival and in the specific anatomic pathway of lymphatic metastases exhibited by skip N2 tumours.
Mp60-09 lim1 oncogene as a new therapeutic target in advanced human renal cell carcinoma
Imene Hamaidi, Sabrina Danilin, Valérian Dormoy, Sylvie Rothhut, Catherine Coquard, Claire Beraud, Mariette Barthelmebs, Veronique Lindner, Hervé Lang, Thierry Massfelder
The Journal of Urology, 2017, 197 (4S), pp.e793. ⟨10.1016/j.juro.2017.02.1846⟩
Article dans une revueAbstractClear cell renal cell carcinoma (CCC) is resistant to therapies. We and others have shown the oncogenicity of various signaling pathways/markers including the PI3K/Akt, NF-kB, MAPK, sonic hedgehog (SHH)-Gli and Notch pathways and Pax2 transcription factor. These are also pathways/markers involved in nephrogenesis leading us to hypothesize that tumor cells hijack developmental signaling pathways/markers for their own growth. Among Gli targets, we have identified the developmental Lim1 transcription factor as a new oncogene in CCC, regulating tumor growth. Preliminary results also suggested a role in metastasis development. Here, we subsequently investigated whether Lim1 has a role in advanced CCC.
Complexity and Distribution of Drivers in Relation to Duration of Persistent Atrial Fibrillation
Han S. Lim, Mélèze Hocini, Remi Dubois, Arnaud Denis, Nicolas Derval, Stephan Zellerhoff, Seigo Yamashita, Benjamin Berte, Saagar Mahida, Yuki Komatsu, Matthew Daly, Laurence Jesel, Carole Pomier, Valentin Meillet, Sana Amraoui, Ashok J. Shah, Hubert Cochet, Frédéric Sacher, Pierre Jaïs, Michel Haïssaguerre
J Am Coll Cardiol, 2017, 69 (10), pp.1257-1269. ⟨10.1016/j.jacc.2017.01.014⟩
Article dans une revueAbstractBACKGROUND: The underlying mechanisms sustaining human persistent atrial fibrillation (PsAF) is poorly understood. OBJECTIVES: This study sought to investigate the complexity and distribution of AF drivers in PsAF of varying durations. METHODS: Of 135 consecutive patients with PsAF, 105 patients referred for de novo ablation of PsAF were prospectively recruited. Patients were divided into 3 groups according to AF duration: PsAF presenting in sinus rhythm (AF induced), PsAF <12 months, and PsAF >12 months. Patients wore a 252-electrode vest for body surface mapping. Localized drivers (re-entrant or focal) were identified using phase-mapping algorithms. RESULTS: In this patient cohort, the most prominent re-entrant driver regions included the pulmonary vein (PV) regions and inferoposterior left atrial wall. Focal drivers were observed in 1 or both PV regions in 75% of patients. Comparing between the 3 groups, with longer AF duration AF complexity increased, reflected by increased number of re-entrant rotations (p < 0.05), number of re-entrant rotations and focal events (p < 0.05), and number of regions harboring re-entrant (p < 0.01) and focal (p < 0.05) drivers. With increased AF duration, a higher proportion of patients had multiple extra-PV driver regions, specifically in the inferoposterior left atrium (p < 0.01), superior right atrium (p < 0.05), and inferior right atrium (p < 0.05). Procedural AF termination was achieved in 70% of patients, but decreased with longer AF duration. CONCLUSIONS: The complexity of AF drivers increases with prolonged AF duration. Re-entrant and focal drivers are predominantly located in the PV antral and adjacent regions. However, with longer AF duration, multiple drivers are distributed at extra-PV sites. AF termination rate declines as patients progress to longstanding PsAF, underscoring the importance of early intervention.
Identification and Characterization of MicroRNA Differentially Expressed in Macrophages Exposed to Porphyromonas gingivalis Infection
Olivier Huck, Jacob Al-Hashemi, Laetitia Poidevin, Olivier Poch, Jean-Luc Davideau, Henri Tenenbaum, Salomon Amar
Infection and Immunity, 2017, 85 (3), ⟨10.1128/IAI.00771-16⟩
Article dans une revueAbstractMicroRNAs (miRNAs) are short, noncoding RNAs involved in the regulation of several processes associated with inflammatory diseases and infection. Bacterial infection modulates miRNA expression to subvert any innate immune response. In this study we analyzed, using microarray analysis, the bacterial modulation of miRNAs in bone marrow-derived macrophages (BMMs) in which activity was induced by infection with Porphyromonas gingivalis. The expression of several miRNAs was modulated 3 h postinfection (at a multiplicity of infection of 25). A bioinformatic analysis was performed to further identify pathways related to the innate immune host response under the influence of selected miRNAs. To assess the effects of the miRNAs identified on cytokine secretion (tumor necrosis factor alpha [TNF-alpha] and interleukin-10 [IL-10]), BMMs were transfected with selected miRNA mimics and inhibitors. Transfection with mmu-miR-155 and mmumiR- 2137 did not modify TNF-alpha secretion, while their inhibitors increased it. Inhibitors of mmu-miR-2137 and mmu-miR-7674 increased the secretion of the anti-inflammatory factor IL-10. In P. gingivalis-infected BMMs, mmu-miR-155-5p significantly decreased TNF-alpha secretion while inhibitor of mmu-miR-2137 increased IL-10 secretion. In vivo, in a mouse model of P. gingivalis-induced calvarial bone resorption, injection of mmu-miR-155-5p or anti-mmu-miR-2137 reduced the size of the lesion significantly. Furthermore, anti-mmu-miR-2137 significantly reduced inflammatory cell infiltration, osteoclast activity, and bone loss. Bioinformatic analysis demonstrated that pathways related to cytokine-and chemokinerelated pathways but also osteoclast differentiation may be involved in the effects observed. This study contributes further to our understanding of P. gingivalis-induced modulation of miRNAs and their physiological effects. It highlights the potential therapeutic merits of targeting mmu-miR-155-5p and mmumiR-2137 to control inflammation induced by P. gingivalis infection.
Paralysie diaphragmatique progressive consécutive à une chimiothérapie intra-abdominale [=Progressive paralysis of the diaphragm following intra-abdominal chemotherapy]
Sophie Guinard, Anne Olland, Mickaël Ohana, Pierre-Emmanuel Falcoz, Romain Kessler, Gilbert Massard
Revue des Maladies Respiratoires, 2017, 34 (3), pp.244-248. ⟨10.1016/j.rmr.2016.05.013⟩
Article dans une revuePromoting bioengineered tooth innervation using nanostructured and hybrid scaffolds
Sabine Kuchler-Bopp, A Larrea, L Petry, Ysia Idoux-Gillet, V. Sebastian, A Ferrandon, Pascale Schwinte, M. Arruebo, Nadia Benkirane-Jessel
Acta Biomaterialia, 2017, 50, pp.493-501. ⟨10.1016/j.actbio.2017.01.001⟩
Article dans une revueRandomised, prospective, medico-economic nationwide French study of islet transplantation in patients with severely unstable type 1 diabetes: the STABILOT study protocol
Sandrine Lablanche, Sandra David-Tchouda, Jennifer Margier, Edith Schir, Anne Wojtusciszyn, Sophie Borot, Laurence Kessler, Emmanuel Morelon, Charles Thivolet, François Pattou, Marie Christine Vantyghem, Thierry Berney, Pierre-Yves Benhamou
BMJ Open, 2017, 7 (2), pp.e013434. ⟨10.1136/bmjopen-2016-013434⟩
Article dans une revueAbstractINTRODUCTION: Islet transplantation may be an appropriate treatment option for patients with severely unstable type 1 diabetes experiencing major glucose variability with severe hypoglycaemia despite intensive insulin therapy. Few data are available on the costs associated with islet transplantation in relation to its benefits. The STABILOT study proposes to assess the economic impact of islet transplantation in comparison with the current best medical treatment defined as sensor-augmented pump (SAP) therapy. METHODS: The trial will adopt an open-label, randomised, multicentred design. The study will include 30 patients with severely unstable type 1 diabetes. Eligible participants will be 18-65 years old, with type 1 diabetes duration >5 years, a negative basal or stimulated C-peptide, and severe instability defined by persistent, recurrent and disabling severe hypoglycaemia, despite optimised medical treatment. Participants will be randomised into two groups: one group with immediate registration for islet transplantation, and one group with delayed registration for 1 year while patients receive SAP therapy. The primary endpoint will be the incremental cost-utility ratio at 1 year between islet transplantation and SAP therapy. Perspectives of both the French Health Insurance System and the hospitals will be retained. ETHICS AND DISSEMINATION: Ethical approval has been obtained at all sites. The trial has been approved by ClinicalTrials.gov (Trial registration ID NCT02854696). All participants will sign a free and informed consent form before randomisation. Results of the study will be communicated during national and international meetings in the field of diabetes and transplantation. A publication will be sought in journals usually read by physicians involved in diabetes care, transplantation and internal medicine. TRIAL REGISTRATION NUMBER: NCT02854696; Pre-results.
Video Laryngoscopy vs Direct Laryngoscopy on Successful First-Pass Orotracheal Intubation Among ICU Patients: A Randomized Clinical Trial
Jean Baptiste Lascarrou, Julie Boisrame-Helms, Arthur Bailly, Aurelie Le Thuaut, Toufik Kamel, Emmanuelle Mercier, Jean-Damien Ricard, Virginie Lemiale, Gwenhael Colin, Jean Paul Mira, Ferhat Meziani, Jonathan Messika, Pierre Francois Dequin, Thierry Boulain, Elie Azoulay, Benoit Champigneulle, Jean Reignier
Journal of the American Medical Association, 2017, 317 (5), pp.483-493. ⟨10.1001/jama.2016.20603⟩
Article dans une revueAbstractImportance: In the intensive care unit (ICU), orotracheal intubation can be associated with increased risk of complications because the patient may be acutely unstable, requiring prompt intervention, often by a practitioner with nonexpert skills. Video laryngoscopy may decrease this risk by improving glottis visualization. Objective: To determine whether video laryngoscopy increases the frequency of successful first-pass orotracheal intubation compared with direct laryngoscopy in ICU patients. Design, Setting, and Participants: Randomized clinical trial of 371 adults requiring intubation while being treated at 7 ICUs in France between May 2015 and January 2016; there was 28 days of follow-up. Interventions: Intubation using a video laryngoscope (n = 186) or direct laryngoscopy (n = 185). All patients received general anesthesia. Main Outcomes and Measures: The primary outcome was the proportion of patients with successful first-pass intubation. The secondary outcomes included time to successful intubation and mild to moderate and severe life-threatening complications. Results: Among 371 randomized patients (mean [SD] age, 62.8 [15.8] years; 136 [36.7%] women), 371 completed the trial. The proportion of patients with successful first-pass intubation did not differ significantly between the video laryngoscopy and direct laryngoscopy groups (67.7% vs 70.3%; absolute difference, -2.5% [95% CI, -11.9% to 6.9%]; P = .60). The proportion of first-attempt intubations performed by nonexperts (primarily residents, n = 290) did not differ between the groups (84.4% with video laryngoscopy vs 83.2% with direct laryngoscopy; absolute difference 1.2% [95% CI, -6.3% to 8.6%]; P = .76). The median time to successful intubation was 3 minutes (range, 2 to 4 minutes) for both video laryngoscopy and direct laryngoscopy (absolute difference, 0 [95% CI, 0 to 0]; P = .95). Video laryngoscopy was not associated with life-threatening complications (24/180 [13.3%] vs 17/179 [9.5%] for direct laryngoscopy; absolute difference, 3.8% [95% CI, -2.7% to 10.4%]; P = .25). In post hoc analysis, video laryngoscopy was associated with severe life-threatening complications (17/179 [9.5%] vs 5/179 [2.8%] for direct laryngoscopy; absolute difference, 6.7% [95% CI, 1.8% to 11.6%]; P = .01) but not with mild to moderate life-threatening complications (10/181 [5.4%] vs 14/181 [7.7%]; absolute difference, -2.3% [95% CI, -7.4% to 2.8%]; P = .37). Conclusions and Relevance: Among patients in the ICU requiring intubation, video laryngoscopy compared with direct laryngoscopy did not improve first-pass orotracheal intubation rates and was associated with higher rates of severe life-threatening complications. Further studies are needed to assess the comparative effectiveness of these 2 strategies in different clinical settings and among operators with diverse skill levels. Trial Registration: clinicaltrials.gov Identifier: NCT02413723.
Attributable mortality of ICU-acquired bloodstream infections: Impact of the source, causative micro-organism, resistance profile and antimicrobial therapy
Christophe Adrie, Christophe Adrie, Maité Garrouste-Orgeas, Maïté Garrouste-Orgeas, Wafa Ibn Essaied, Carole Schwebel, Carole Schwebel, Michael Darmon, Michael Darmon, Bruno Mourvillier, Bruno Mourvillier, Stéphane Ruckly, Stéphane Ruckly, Anne-Sylvie Dumenil, Anne-Sylvie Dumenil, Hatem Kallel, Hatem Kallel, Laurent Argaud, Laurent Argaud, Guillaume Marcotte, Guillaume Marcotte, Francois Barbier, Francois Barbier, Virginie Laurent, Virginie Laurent, Dany Goldgran-Toledano, Dany Goldgran-Toledano, Christophe Clec'H, Christophe Clec'H, Elie Azoulay, Elie Azoulay, Bertrand Souweine, Bertrand Souweine, Jean-François Timsit, Jean-François Timsit, Jean-François Timsit, Yves Cohen, Lilia Soufir, Alban Le Monnier, Jean-Ralph Zahar, Corinne Alberti, Sebastien Bailly, Cecile Pommier, Wafa Ifn Essaeid, Aurélien Vannieuwenhuyze, Bernard Allaouchiche, Claire Ara-Somohano, Jean-Pierre Bedos, Agnès Bonadona, Anne-Laure Borel, Caroline Bornstain, Lila Bouadma, Alexandre Boyer, Jean-Pierre Colin, Antoine Gros, Rebecca Hamidfar-Roy, Hakim Haouache, Samir Jamali, Alexandre Lautrette, Christian Laplace, Benoit Misset, Laurent Montesino, Benoît Misset, Guillaume Lacave, Virgine Lemiale, Eric Marriotte, Benjamin Planquette, Jean Reignier, Romain Sonneville, Gilles Troché, Marie Thuong, Eric Vantalon, Caroline Tournegros, Loïc Ferrand, Nadira Kaddour, Boris Berthe, Kaouttar Mellouk, Sophie Letrou, Igor Théodose, Julien Fournier, Véronique Deiler
Journal of Infection, 2017, 74 (2), pp.131-141. ⟨10.1016/j.jinf.2016.11.001⟩
Article dans une revueAbstractICU-acquired bloodstream infection (ICUBSI) in Intensive Care unit (ICU) is still associated with a high mortality rate. The increase of antimicrobial drug resistance makes its treatment increasingly challenging.
Covalently immobilized VEGF-mimicking peptide with gelatin methacrylate enhances microvascularization of endothelial cells
S Prakash Parthiban, Deepti Rana, Esmaiel Jabbari, Nadia Benkirane-Jessel, Murugan Ramalingam
Acta Biomaterialia, 2017, 51, pp.330-340. ⟨10.1016/j.actbio.2017.01.046⟩
Article dans une revueAbstractClinically usable tissue-engineered constructs are currently limited due to their inability of forming microvascular networks necessary for adequate cellular oxygen and nutrient supply upon implantation. The aim of this study is to investigate the conditions necessary for microvascularization in a tissue engineered construct using vascular endothelial growth factor (VEGF). The construct was made of gelatin methacrylate (GeIMA) based cell-laden hydrogel system, which was then covalently linked with VEGFmimicking peptide (AcQK), using human umbilical vein endothelial cells (HUVECs) as the model cell. The results of the mechanics and gene expression analysis indicated significant changes in mechanical properties and upregulation of vascular-specific genes. The major finding of this study is that the increased expression of vascular-specific genes could be achieved by employing AcQK in the GeIMA based hydrogel system, leading to accelerated microvascularization. We conclude that GeIMA with covalentlylinked angiogenic peptide is a useful tissue engineered construct suitable for microvascularization. Statement of Significance (1) This study reports the conditions necessary for microvascularization in a tissue-engineered construct using vascular endothelial growth factor (VEGF). (2) The construct was made of gelatin methacrylate based cell-laden hydrogel system. (3) There is a significant change observed in mechanical properties and upregulation of vascular-specific genes, in particular CD34, when AcQK is used. (4) The major finding of this study is that the increased expression of vascular-specific genes, i.e., CD34 could be achieved by employing AcQK in the GeIMA based hydrogel system, leading to accelerated microvascularization. (c) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KRAS exon 2 codon 13 mutation is associated with a better prognosis than codon 12 mutation following lung metastasectomy in colorectal cancer
Stéphane Renaud, Francesco Guerrera, Joseph Seitlinger, Lorena Costardi, Mickaël Schaeffer, Benoit Romain, Claudio Mossetti, Anne Claire-Voegeli, Pier Luigi Filosso, Michèle Legrain, Enrico Ruffini, Pierre-Emmanuel Falcoz, Alberto Oliaro, Gilbert Massard
Oncotarget, 2017, 8 (2), pp.2514-2524. ⟨10.18632/oncotarget.13697⟩
Article dans une revueAbstractINTRODUCTION: The utilization of molecular markers as routinely used biomarkers is steadily increasing. We aimed to evaluate the potential different prognostic values of KRAS exon 2 codons 12 and 13 after lung metastasectomy in colorectal cancer (CRC). RESULTS: KRAS codon 12 mutations were observed in 116 patients (77%), whereas codon 13 mutations were observed in 34 patients (23%). KRAS codon 13 mutations were associated with both longer time to pulmonary recurrence (TTPR) (median TTPR: 78 months (95% CI: 50.61-82.56) vs 56 months (95% CI: 68.71-127.51), P = 0.008) and improved overall survival (OS) (median OS: 82 months vs 54 months (95% CI: 48.93-59.07), P = 0.009). Multivariate analysis confirmed that codon 13 mutations were associated with better outcomes (TTPR: HR: 0.40 (95% CI: 0.17-0.93), P = 0.033); OS: HR: 0.39 (95% CI: 0.14-1.07), P = 0.07). Otherwise, no significant difference in OS (P = 0.78) or TTPR (P = 0.72) based on the type of amino-acid substitutions was observed among KRAS codon 12 mutations. MATERIALS AND METHODS: We retrospectively reviewed data from 525 patients who underwent a lung metastasectomy for CRC in two departments of thoracic surgery from 1998 to 2015 and focused on 150 patients that had KRAS exon 2 codon 12/13 mutations. CONCLUSIONS: KRAS exon 2 codon 13 mutations, compared to codon 12 mutations, seem to be associated with better outcomes following lung metastasectomy in CRC. Prospective multicenter studies are necessary to fully understand the prognostic value of KRAS mutations in the lung metastases of CRC.
Cytokines during periodontal wound healing: potential application for new therapeutic approach
David-Nicolas Morand, Jean-Luc Davideau, François Clauss, Nadia Jessel, Henri Tenenbaum, Olivier Huck
Oral Diseases, 2017, 23 (3), pp.300-311. ⟨10.1111/odi.12469⟩
Article dans une revueAbstractRegeneration of periodontal tissues is one of the main goals of periodontal therapy. However, current treatment, including surgical approach, use of membrane to allow maturation of all periodontal tissues, or use of enamel matrix derivatives, presents limitations in their indications and outcomes leading to the development of new tissue engineering strategies. Several cytokines are considered as key molecules during periodontal destruction process. However, their role during each phase of periodontal wound healing remains unclear. Control and modulation of the inflammatory response and especially, release of cytokines or activation/inhibition in a time- and spatial-controlled manner may be a potential perspective for periodontal tissue engineering. The aim of this review was to summarize the specific role of several cytokines during periodontal wound healing and the potential therapeutic interest of inflammatory modulation for periodontal regeneration especially related to the expression sequence of cytokines.
Alternatives to Titanium Implants for Pectus Excavatum Repair
Gilbert Massard, Pierre-Emmanuel Falcoz
The annals of thoracic surgery, 2017, 104 (6), ⟨10.1016/j.athoracsur.2017.02.010⟩
Article dans une revueFunctional Myocardial Ischemia and Anemia Revealing a Coronary Stenosis
Mickael Forato, Pierrick Le Borgne, Charles-Eric Lavoignet, Sarah Ugé, Pascal Bilbault
Annales françaises de médecine d'urgence, 2017, 7 (2), pp.120-123. ⟨10.1007/s13341-017-0707-7⟩
Article dans une revueImpact of prosthesis-patient mismatch on early haemodynamic status after aortic valve replacement
Michel Kindo, Tam Hoang Minh, Stéphanie Perrier, Hélène Petit-Eisenmann, Jonathan Bentz, Mircea Cristinar, Gharib Ajob, Olivier Collange, Jean-Philippe Mazzucotelli
Interactive Cardiovascular and Thoracic Surgery, 2017, 24 (1), pp.48-54. ⟨10.1093/icvts/ivw303⟩
Article dans une revueAbstractOBJECTIVES: Prosthesis-patient mismatch (PPM) has been reported to impact early haemodynamic status and early mortality after prosthetic aortic valve replacement (AVR) in patients with aortic stenosis (AS). The aim of this study was to assess the impact of PMM on early haemodynamic status after AVR using vasoactive-inotropic dependency index (VDI), postoperative pressures and end-organ perfusion. METHODS: A total of 183 patients with AS were included in this prospective cohort study, and underwent elective AVR with or without combined coronary artery bypass graft surgery. PPM was defined as a projected indexed effective orifice area of ≤0.85 cm2/m2, and was present in 27.9% of the patients. The primary end-point was the VDI [VDI = vasoactive-inotropic score/mean arterial pressure] measured upon admission to the intensive care unit (POD0) and on the morning of the first postoperative day (POD1). The secondary end-points were the following: mean left atrial pressure, mean central venous pressure, fluid balance, brain natriuretic peptide, troponin I, glomerular filtration rate and lactate levels on POD0 and POD1. RESULTS: No significant differences in VDI were observed between the no PPM and PPM groups on POD0 (0.08 ± 0.48 vs 0.05 ± 0.13, respectively, P = 0.622) or on POD1 (0.09 ± 0.40 vs 0.06 ± 0.13, respectively; P = 0.583). The mean arterial pressure, mean left atrial pressure, central venous pressure, troponin I, glomerular filtration rate and lactate levels did not differ between the two groups on POD0 and POD1, as well as fluid balance and brain natriuretic peptide on POD1. CONCLUSIONS: PPM is not associated with early haemodynamic status impairment and end-organ perfusion after AVR. CLINICAL TRIAL NUMBER: ClinicalTrials.gov number, NCT00699673.
Trends in isolated coronary artery bypass grafting over the last decade
Michel Kindo, Tam Hoang Minh, Stéphanie Perrier, Jonathan Bentz, Arnaud Mommerot, Philippe Billaud, Jean-Philippe Mazzucotelli
Interactive Cardiovascular and Thoracic Surgery, 2017, 24 (1), pp.71-76. ⟨10.1093/icvts/ivw319⟩
Article dans une revueAbstractOBJECTIVES: The purpose of this study was to assess the impact on hospital mortality and morbidity of extensive myocardial revascularization, using arterial grafts in patients undergoing isolated coronary artery bypass grafting (CABG). METHODS: Our prospective perioperative database was used to define two groups of patients who underwent isolated CABG with cardiopulmonary bypass, based on the years in which the operation was performed: Group A (2000-2003; 898 patients) and Group B (2009-2012; 1249 patients). The baseline and operative characteristics and outcomes were compared. RESULTS: Several significant changes in perioperative variables were observed. Group B included higher percentages of patients aged over 80 years (+58.1%), with diabetes (+32.0%) and with a history of percutaneous coronary intervention (+24.9%). The mean EuroSCORE II was significantly increased from 2.5 ± 4.4% in Group A to 3.2 ± 5.7% in Group B (P= 0.001). The mean number of distal anastomoses was significantly increased over time (total: 2.6 ± 0.8 vs 3.1 ± 1.0, P< 0.0001 and with arterial grafts: 1.6 ± 0.8 vs 2.6 ± 0.9, P< 0.0001). In-hospital mortality was low and did not significantly differ between Groups A and B (1.3 vs 2.4%; P= 0.08). Significant increases of new-onset atrial fibrillation (11.7 vs 21.9%, P= 0.017) and deep sternal infection (0.2 vs 1.1%, P= 0.017) were observed in Group B, compared with Group A. In multivariate analysis, extensive use of arterial grafts was not a risk factor of hospital mortality or sternal morbidity. CONCLUSIONS: Despite the increasing risk profiles of patients undergoing CABG, extensive myocardial revascularization using arterial grafts is associated with good early results.
[Long-term treatments for COPD: Do they lose effectiveness with time?]
H. El Khoury, Andrea Mazzetta, Michèle Porzio, Romain Kessler
Revue des maladies respiratoires, 2017, 34 (6), pp.591-593. ⟨10.1016/j.rmr.2016.08.006⟩
Article dans une revueINVOLVEMENT OF ANGIOGENIN IN SUNITINIB RESISTANCE IN HUMAN RENAL CELL CARCINOMA
Laure Pierard, Sebastien Bergerat, Claire Beraud, Pascal Mouracade, Imène Hamaidi, Catherine Coquard, Sylvie Rothhut, Véronique Lindner, Hervé Lang, Thierry Massfelder
The Journal of Urology, 2017, 197 (4), ⟨10.1016/j.juro.2017.02.3352⟩
Article dans une revueBrain abscesses caused by Cladophialophora bantiana in a lung transplant patient: A case report and review of the literature
Anthony Gschwend, Tristan Dégot, Julie Denis, Alina M. Sabou, Mi Young Jeung, Emilie Zapata, Michele Porzio, Benjamin Renaud-Picard, Raoul Herbrecht, Romain Kessler
Transplant Infectious Disease, 2017, 19 (6), ⟨10.1111/tid.12787⟩
Article dans une revueAbstractCladophialophora bantiana brain abscesses are rare, but are frequently and quickly lethal in transplanted patients. We report the case of a 63-year-old man who had undergone lung transplantation for chronic obstructive pulmonary disease and presented with headaches and a neurological deficit. Magnetic resonance imaging revealed multiple brain abscesses. C. bantiana was identified by DNA sequencing performed directly on cerebral tissue obtained by surgical biopsy. After 6 months of antifungal treatment, the brain abscesses were replaced by ischemic sequelae. The patient died suddenly 2 months later from a pulmonary bacterial infection. This is the second reported case of C. bantiana brain abscesses in a lung transplant recipient, to our knowledge, who experienced a long survival period with medical antifungal treatment alone. We review the literature and discuss our treatment.
ROLE OF THE C-MYC TARGET DNPH1, A NEW N-HYDROLASE, IN KIDNEY AND PROSTATE CANCERS
Sabrina Danilin, Claire Amiable, Catherine Coquard, Pierre-Alexandre Kaminski, Julie Paoletti, Sylvie Rothhut, Imene Hamaidi, Claire Beraud, Véronique Lindner, Hervé Lang, Sylvie Pochet, Thierry Massfelder
The Journal of Urology, 2017, 197 (4), ⟨10.1016/j.juro.2017.02.2712⟩
Article dans une revueBlood Gene Expression Predicts Bronchiolitis Obliterans Syndrome
Richard Danger, Pierre-Joseph Royer, Damien Reboulleau, Eugénie Durand, Jennifer Loy, Adrien Tissot, Philippe Lacoste, Antoine Roux, Martine Reynaud-Gaubert, Carine Gomez, Romain Kessler, Sacha Mussot, Claire Dromer, Olivier Brugière, Jean‐françois Mornex, Romain Guillemain, Marcel Dahan, Christiane Knoop, Karine Botturi, Aurore Foureau, Christophe Pison, Angela Koutsokera, Laurent P. Nicod, Sophie Brouard, Antoine Magnan
Frontiers in Immunology, 2017, COLT - Equipe III, 8, pp.1841. ⟨10.3389/fimmu.2017.01841⟩
Article dans une revueAbstractBronchiolitis obliterans syndrome (BOS), the main manifestation of chronic lung allograft dysfunction, leads to poor long-term survival after lung transplantation. Identifying predictors of BOS is essential to prevent the progression of dysfunction before irreversible damage occurs. By using a large set of 107 samples from lung recipients, we performed microarray gene expression profiling of whole blood to identify early biomarkers of BOS, including samples from 49 patients with stable function for at least 3 years, 32 samples collected at least 6 months before BOS diagnosis (prediction group), and 26 samples at or after BOS diagnosis (diagnosis group). An independent set from 25 lung recipients was used for validation by quantitative PCR (13 stables, 11 in the prediction group, and 8 in the diagnosis group). We identified 50 transcripts differentially expressed between stable and BOS recipients. Three genes, namely POU class 2 associating factor 1 (POU2AF1), T-cell leukemia/lymphoma protein 1A (TCL1A), and B cell lymphocyte kinase, were validated as predictive biomarkers of BOS more than 6 months before diagnosis, with areas under the curve of 0.83, 0.77, and 0.78 respectively. These genes allow stratification based on BOS risk (log-rank test p \textless 0.01) and are not associated with time posttransplantation. This is the first published large-scale gene expression analysis of blood after lung transplantation. The three-gene blood signature could provide clinicians with new tools to improve follow-up and adapt treatment of patients likely to develop BOS.
Withdrawal of long-term epoprostenol therapy in pulmonary arterial hypertension (PAH)
George Calcaianu, Mihaela Calcaianu, Matthieu Canuet, Irina Enache, Romain Kessler
Pulmonary Circulation, 2017, 7 (2), pp.439-447. ⟨10.1177/2045893217702401⟩
Article dans une revueAbstractOnce initiated for pulmonary arterial hypertension (PAH), epoprostenol treatment usually needs to be delivered for an indefinite duration. It is possible that some participants could be transitioned from epoprostenol to oral therapies. We retrospectively evaluated eight PAH participants transitioned from epoprostenol to PAH oral drugs. The criteria for epoprostenol withdrawal were: (1) persistent improvement of clinic and hemodynamic status; (2) stable dose of epoprostenol for the last three months; and (3) the participant's preference for oral therapy after evaluation of risk-benefit. We evaluated the clinical, functional, and hemodynamic status at baseline, at withdrawal, and after the transition to oral PAH therapy. The transition was completed in all eight participants. Four participants had a complete successful transition (CT) with a stable clinical and hemodynamic course and four participants had a partial successful transition (PT) remaining stable clinically, with a mild hemodynamic worsening, but without need to re-initiate epoprostenol therapy. The four CT participants were treated with epoprostenol for a shorter period of time (CT group: 35 ± 30 versus PT group: 79 ± 49 months, P = 0.08). Mean epoprostenol dosage was lower in the CT group (CT group: 15 ± 1.5 ng/kg/min versus PT group: 24 ± 11 ng/kg/min, P = 0.09). Safe withdrawal of epoprostenol treatment and transition to oral PAH therapy was possible in a small and highly selected group of participants. The majority of these participants had a porto-pulmonary PAH or PAH associated to HIV infection.
Endothelial microparticles released by activated protein C protect beta cells through EPCR/PAR1 and annexin A1/FPR2 pathways in islets
Guillaume Kreutter, Mohamad Kassem, Ali El Habhab, P Baltzinger, Malak Abbas, Julie Boisrame-Helms, Lamia Amoura, Jean Peluso, Blandine Yver, Zobairi Fatiha, Geneviève Ubeaud-Sequier, Laurence Kessler, Florence Toti
Journal of Cellular and Molecular Medicine, 2017, 21 (11), pp.2759-2772. ⟨10.1111/jcmm.13191⟩
Article dans une revueAbstractIslet transplantation is associated with early ischaemia/reperfusion, localized coagulation and redox-sensitive endothelial dysfunction. In animal models, islet cytoprotection by activated protein C (aPC) restores islet vascularization and protects graft function, suggesting that aPC triggers various lineages. aPC also prompts the release of endothelial MP that bear EPCR, its specific receptor. Microparticles (MP) are plasma membrane procoagulant vesicles, surrogate markers of stress and cellular effectors. We measured the cytoprotective effects of aPC on endothelial and insulin-secreting Rin-m5f beta-cells and its role in autocrine and paracrine MP-mediated cell crosstalk under conditions of oxidative stress. MP from aPC-treated primary endothelial (EC) or beta-cells were applied to H2O2-treated Rin-m5f. aPC activity was measured by enzymatic assay and ROS species by dihydroethidium. The capture of PKH26-stained MP and the expression of EPCR were probed by fluorescence microscopy and apoptosis by flow cytometry. aPC treatment enhanced both annexin A1 (ANXA1) and PAR-1 expression in EC and to a lesser extent in beta-cells. MP from aPC-treated EC (eM(aPC)) exhibited high EPCR and annexin A1 content, protected beta-cells, restored insulin secretion and were captured by 80% of beta cells in a phosphatidylserine and ANXA1-dependent mechanism. eMP activated EPCR/PAR-1 and ANXA1/FPR2-dependent pathways and up-regulated the expression of EPCR, and of FPR2/ALX, the ANXA1 receptor. Cytoprotection was confirmed in H2O2-treated rat islets with increased viability (62% versus 48% H2O2), reduced apoptosis and preserved insulin secretion in response to glucose elevation (16 versus 5 ng/ml insulin per 10 islets). MP may prove a promising therapeutic tool in the protection of transplanted islets.
Low Accuracy of Computed Tomography and Positron Emission Tomography to Detect Lung and Lymph Node Metastases of Colorectal Cancer
Francesco Guerrera, Stéphane Renaud, Mickaël Schaeffer, Victor Nigra, Paolo Solidoro, Nicola Santelmo, Pier Luigi Filosso, Pierre-Emmanuel Falcoz, Enrico Ruffini, Alberto Oliaro, Gilbert Massard
The annals of thoracic surgery, 2017, 104 (4), pp.1194-1199. ⟨10.1016/j.athoracsur.2017.05.002⟩
Article dans une revueAbstractBACKGROUND: Minimally invasive surgery, stereotactic radiotherapy, and radiofrequency ablation are commonly proposed in the case of pulmonary colorectal-metastasis as alternatives to conventional open surgery. Preoperative imaging assessment by computed tomography (CT) scan and fluorodeoxyglucose positron emission tomography (FDG-PET) are critical to guide oncologic radical treatment. Our aim was to investigate the accuracy of CT and FDG-PET for the evaluation of the number of pulmonary colorectal metastases and thoracic lymph nodal involvement (LNI). METHODS: Patients who underwent lung surgical resection for pulmonary colorectal metastases from 2004 to 2014 were analyzed. Concordance between histology, CT scan, and FDG-PET findings were assessed. RESULTS: Data of 521 patients were analyzed. Of those, FDG-PET was performed in 435 (83.5%). A moderate agreement between both CT scan (kappa index: 0.42) and FDG-PET (kappa index: 0.42) findings and the histologically proven number of metastases was observed. The number of histologically proven metastases was correctly discriminated in 61.7% of cases with CT scan and in 61.8% of cases with FDG-PET. Multiple metastases were discovered in 20.9% of clinical single metastasis cases with CT scan, and in 24.4% of those cases with FDG-PET. One hundred fifty patients (29.1%) presented with pathologic LNI. A poor agreement was observed between LNI and CT scan findings (kappa index: 0.02), and a weak agreement was observed concerning LNI and FDG-PET findings (kappa index: 0.39). CONCLUSIONS: Computed tomography and FDG-PET have limitations if the objective is to detect all malignant nodules and to discriminate the LNI in cases of pulmonary metastases of colorectal cancer.
Bronchial complications after lung transplantation are associated with primary lung graft dysfunction and surgical technique
Anne Olland, Jérémie Reeb, Marc Puyraveau, Sandrine Hirschi, Joseph Seitlinger, Nicola Santelmo, Olivier Collange, Paul-Michel Mertes, Romain Kessler, Pierre-Emanuel Falcoz, Gilbert Massard
The Journal of Heart and Lung Transplantation, 2017, 36 (2), pp.157-165. ⟨10.1016/j.healun.2016.08.003⟩
Article dans une revueAbstractBACKGROUND: After lung transplantation, bronchial complications are one of the major concerns for surgeons and physicians. In the era of evolving immunosuppressive regimens and surgical approaches, we have reassessed risk factors for bronchial complications after lung transplantation. METHODS: We undertook a retrospective study of all consecutive lung transplantations performed at a single center from 2004 to 2014. We monitored the incidence of symptomatic bronchial complications. Demographic data of donors and recipients were also studied. Our objective was to evaluate the impact of 3 subsequent immunosuppressive regimens (including the use of induction therapy), and of a technical modification of bronchial anastomosis on the incidence of airway complications. RESULTS: We performed 270 consecutive lung transplantations during the study period. On multivariate analysis, bronchial complications were not directly associated with the different immunosuppressive regimens. In subgroup analysis, when comparing different immunosuppressive regimens, primary graft dysfunction within 72 hours (odds ratio [OR] = 2.55; p = 0.08), lung infection within the first month (OR = 2.96; p = 0.039), diabetes before transplantation (OR = 2.66; p = 0.11) and chronic obstructive pulmonary disease (OR = 2.20; p = 0.04) appeared as major risk factors (c-index = 0.77 on multivariate analysis). The use of a modified bronchial suture technique was associated with fewer bronchial complications (OR = 0.47; p = 0.059) (c-index = 0.71 on multivariate analysis). CONCLUSIONS: The mode of immunosuppression had no influence on airway complications. We were able to reproduce the beneficial effect of a modified suture technique. (C) 2016 International Society for Heart and Lung Transplantation. All rights reserved.
Association Between Planned Cesarean Delivery and Neonatal Mortality and Morbidity in Twin Pregnancies
Thomas Schmitz, Caroline Prunet, Elie Azria, Caroline Bohec, André Bongain, Pierre Chabanier, Claude Dʼercole, Philippe Deruelle, Renaud de Tayrac, Michel Dreyfus, Corinne Dupont, Jean Gondry, Olivier Graesslin, Gilles Kayem, Bruno Langer, Loïc Marpeau, Olivier Morel, Olivier Parant, Franck Perrotin, Fabrice H.F. Pierre, Patrice Poulain, Didier Riethmuller, Patrick Rozenberg, Rene-Charles Rudigoz, Paul Sagot, Marie-Victoire Senat, Loïc Sentilhes, Christophe Vayssière, Françoise Vendittelli, Eric Verspyck, Norbert Winer, Laurence Lecomte-Raclet, Pierre-Yves Ancel, François Goffinet
Obstetrics and Gynecology, 2017, 129 (6), pp.986-995. ⟨10.1097/AOG.0000000000002048⟩
Article dans une revueAbstractOBJECTIVE: To evaluate the association between the planned mode of delivery and neonatal mortality and morbidity in an unselected population of women with twin pregnancies. METHODS: The JUmeaux MODe d'Accouchement (JUMODA) study was a national prospective population-based cohort study. All women with twin pregnancies and their neonates born at or after 32 weeks of gestation with a cephalic first twin were recruited in 176 maternity units in France from February 2014 to March 2015. The primary outcome was a composite of intrapartum mortality and neonatal mortality and morbidity. Comparisons were performed according to the planned mode of delivery, planned cesarean or planned vaginal delivery. The primary analysis to control for potential indication bias used propensity score matching. Subgroup analyses were conducted, one according to gestational age at delivery and one after exclusion of high-risk pregnancies. RESULTS: Among 5,915 women enrolled in the study, 1,454 (24.6%) had planned cesarean and 4,461 (75.4%) planned vaginal deliveries, of whom 3,583 (80.3%) delivered both twins vaginally. In the overall population, composite neonatal mortality and morbidity was increased in the planned cesarean compared with the planned vaginal delivery group (5.2% compared with 2.2%; odds ratio [OR] 2.38, 95% confidence interval [CI] 1.86–3.05). After matching, neonates born after planned cesarean compared with planned vaginal delivery had higher composite neonatal mortality and morbidity rates (5.3% compared with 3.0%; OR 1.85, 95% confidence interval 1.29–2.67). Differences in composite mortality and morbidity rates applied to neonates born before but not after 37 weeks of gestation. Multivariate and subgroup analyses after exclusion of high-risk pregnancies found similar trends.CONCLUSION: Planned vaginal delivery for twin pregnancies with a cephalic first twin at or after 32 weeks of gestation was associated with low composite neonatal mortality and morbidity. Moreover, planned cesarean compared with planned vaginal delivery before 37 weeks of gestation might be associated with increased composite neonatal mortality and morbidity.
Out-of-hospital cardiac arrest survivors sent for emergency angiography: a clinical score for predicting acute myocardial infarction
Floriane Zeyons, Laurence Jesel, Olivier Morel, Hélène Kremer, Nathan Messas, Sebastien Hess, Ulun Crimizade, Philippe Reydel, Laurent Tritsch, Patrick Ohlmann
European Heart Journal: Acute Cardiovascular Care, 2017, 6 (2), pp.103-111. ⟨10.1177/2048872616683525⟩
Article dans une revueAbstractBACKGROUND: Out-of-hospital cardiac arrest (OHCA) remains a major public health issue. Emergency coronary angiography and percutaneous coronary intervention might improve survival, especially when cardiac arrest is caused by acute myocardial infarction (AMI). However, identifying patients with AMI after OHCA remains challenging. The aim of this study was to determine the clinical and ECG criteria in OHCA that may help to identify better the patients with AMI. METHODS: Consecutive OHCA patients who underwent emergency coronary angiography in our centre between 2009 and 2013 were included in this retrospective single-centre observational study. RESULTS: A total of 177 patients with complete datasets were included. Significant coronary artery disease was found in 71% of the patients, and 43% presented with AMI. The independent predictors of AMI were ST elevation in any lead including aVR (odds ratio (OR) 18.06; 95% confidence interval (CI) 6.6-49.38), chest pain before cardiac arrest (OR 4.05; 95% CI 1.55-10.54) and an initial shockable rhythm (OR 2.99; 95% CI 1.34-6.45). An additive score that included these three predictors yielded a sensitivity and a specificity for detecting AMI of 93% and 63%, respectively. CONCLUSIONS: These data suggest that fewer than half of patients with OHCA undergoing emergency coronary angiography present with AMI. The identification of OHCA patients with AMI might be improved by a simple score using post-resuscitation ECG and simple clinical criteria.
Early and Late Atrial Arrhythmias After Lung Transplantation - Incidence, Predictive Factors and Impact on Mortality
Laurence Jesel, Jérémie Barraud, Han S Lim, Halim Marzak, Nathan Messas, Sandrine Hirschi, Nicola Santelmo, Anne Olland, Pierre Emmanuel Falcoz, Gilbert Massard, Michel Kindo, Patrick Ohlmann, Michel Chauvin, Olivier Morel, Romain Kessler
Circulation Journal, 2017, 81 (5), pp.660-667. ⟨10.1253/circj.CJ-16-0892⟩
Article dans une revueAbstractBackground: Atrial arrhythmias (AAs) are frequent after lung transplantation (LT) and late postoperatively. Several predictive factors of early postoperative AAs after LT have been identified but those of late AAs remain unknown. Whether AA after LT affects mortality is still being debated. This study assessed in a large cohort of LT patients the incidence of AAs early and late after surgery, their predictive factors and their effect on mortality. Methods and Results: We studied 271 consecutive LT patients over 9 years. Mean follow-up was 2.9 2.4 years. 33% patients developed postoperative AAs. Age (odds ratio (OR) 2.35; confidence interval (CI) [1.31-4.24]; P=0.004) and chronic obstructive pulmonary disease (OR 2.13; Cl [1.12-4.03]; P=0.02) were independent predictive factors of early AAs. Late AAs occurred 2.2 2.7 years after transplant in 8.8% of the patients. Pretransplant systolic pulmonary arterial pressure (PTsPAP) was the only independent predictive factor of late AA (OR 1.028; CI [1.001-1.056]; P=0.04). Double LT was associated with long-term freedom from atrial fibrillation (AF) but not from atrial flutter (AFL). Early and late Ms after surgery had no effect on mortality. Double LT was associated with better survival. Conclusions: Early AA following LT is common in contrast with the low occurrence of late, often organized, AA. Early and late AAs do not affect mortality. PTsPAP is an independent predictor of late AA. Double LT protects against late AF but not AFL.
Extracorporeal life support in thoracic surgery: What are the indications and the pertinence?
Jérémie Reeb, Anne Olland, Stéphane Renaud, Olivier Collange, Xavier Delabranche, Nicola Santelmo, Ferhat Meziani, Paul-Michel Mertes, Gilbert Massard, Pierre-Emanuel Falcoz
Revue des Maladies Respiratoires, 2017, 34 (8), pp.802-819. ⟨10.1016/j.rmr.2016.10.879⟩
Article dans une revueAbstractIntroduction. - In thoracic surgery, extracorporeal life support (ECLS) technologies are used in cases of severe and refractory respiratory failure or as intraoperative cardiorespiratory support. The objectives of this review are to describe the rationale of ECLS techniques, to review the pulmonary diseases potentially treated by ECLS, and finally to demonstrate the efficacy of ECLS, using recently published data from the literature, in order to practice evidence based medicine. State of the art. - ECLS technologies should only be undertaken in expert centers. ECLS allows a protective ventilatory strategy in severe ARDS. In the field of lung transplantation, ECLS may be used successfully as a bridge to transplantation, as intraoperative cardiorespiratory support or as a bridge to recovery in cases of severe primary graft dysfunction. In general thoracic surgery, ECLS technology seems to be safe and efficient as intraoperative respiratory support for tracheobronchial surgery or for severe respiratory insufficiency, without significant increase in perioperative risk. Perspective. - The indications for ECLS are going to increase. Future improvements both in scientific knowledge and bioengineering will improve the prognosis of patients treated with ECLS for respiratory failure. Multicenter randomized controlled trials will refine the indications for ECLS and improve the global care strategies for these patients. Conclusion. ECLS is an efficient therapeutic strategy that will improve the prognosis of patients suffering from, or exposed to, the risks of severe respiratory failure. (C) 2017 SPLF. Published by Elsevier Masson SAS. All rights reserved.
Immunohaemostasis: a new view on haemostasis during sepsis
Xavier Delabranche, Julie Helms, Ferhat Meziani
Annals of Intensive Care, 2017, 7 (1), ⟨10.1186/s13613-017-0339-5⟩
Article dans une revueAbstractHost infection by a micro-organism triggers systemic inflammation, innate immunity and complement pathways, but also haemostasis activation. The role of thrombin and fibrin generation in host defence is now recognised, and thrombin has become a partner for survival, while it was seen only as one of the "principal suspects" of multiple organ failure and death during septic shock. This review is first focused on pathophysiology. The role of contact activation system, polyphosphates and neutrophil extracellular traps has emerged, offering new potential therapeutic targets. Interestingly, newly recognised host defence peptides (HDPs), derived from thrombin and other "coagulation" factors, are potent inhibitors of bacterial growth. Inhibition of thrombin generation could promote bacterial growth, while HDPs could become novel therapeutic agents against pathogens when resistance to conventional therapies grows. In a second part, we focused on sepsis-induced coagulopathy diagnostic challenge and stratification from "adaptive" haemostasis to "noxious" disseminated intravascular coagulation (DIC) either thrombotic or haemorrhagic. Besides usual coagulation tests, we discussed cellular haemostasis assessment including neutrophil, platelet and endothelial cell activation. Then, we examined therapeutic opportunities to prevent or to reduce "excess" thrombin generation, while preserving "adaptive" haemostasis. The fail of international randomised trials involving anticoagulants during septic shock may modify the hypothesis considering the end of haemostasis as a target to improve survival. On the one hand, patients at low risk of mortality may not be treated to preserve "immunothrombosis" as a defence when, on the other hand, patients at high risk with patent excess thrombin and fibrin generation could benefit from available (antithrombin, soluble thrombomodulin) or ongoing (FXI and FXII inhibitors) therapies. We propose to better assess coagulation response during infection by an improved knowledge of pathophysiology and systematic testing including determination of DIC scores. This is one of the clues to allocate the right treatment for the right patient at the right moment.
Clamshell Closure With Absorbable Sternal Pins in Lung Transplant Recipients
Anne Olland, Jérémie Reeb, Sophie Guinard, Joseph Seitlinger, Nicola Santelmo, Romain Kessler, Pierre-Emanuel Falcoz, Gilbert Massard
Annals of Thoracic Surgery, 2017, 104 (2), ⟨10.1016/j.athoracsur.2017.04.036⟩
Article dans une revueAbstractClamshell (bilateral anterolateral thoracotomy combined to transverse sternotomy) is an invasive surgical approach that is helpful in particular situations, especially bilateral lung transplantation. The closure technique remains challenging because clamshell incision can end with override, separation, or sternal pseudarthrosis complications. We describe the use of new absorbable sternal pins to stabilize the sternal closure and to help avoid additional sternal complications. (C) 2017 by The Society of Thoracic Surgeons
Should all patients with sepsis receive anticoagulation? Yes
Ferhat Meziani, Satoshi Gando, Jean-Louis Vincent
Intensive Care Medicine, 2017, 43 (3), pp.452-454. ⟨10.1007/s00134-016-4621-z⟩
Article dans une revueHybrid collagen sponge and stem cells as a new combined scaffold able to induce the re-organization of endothelial cells into clustered networks
Damien Offner, Quentin Wagner, Ysia Idoux-Gillet, Hervé Gegout, Arielle Ferrandon, Pascale Schwinte, Anne-Marie Musset, Nadia Benkirane-Jessel, Laetitia Keller
Bio-Medical Materials and Engineering, 2017, 28, ⟨10.3233/BME-171640⟩
Article dans une revuePorphyromonas gingivalis and its LPS differentially regulate the expression of peptidyl arginine deiminases in human chondrocytes
René Elkaim, Isaac Maximiliano Bugueno-Valdebenito, Nadia Benkirane-Jessel, Henri Tenenbaum
Innate Immunity, 2017, 23 (5), pp.468-475. ⟨10.1177/1753425917716266⟩
Article dans une revueAbstractPeriodontitis, an inflammatory disease initiated by Gram-negative bacteria such as Porphyromonas gingivalis (Pg), is considered as a risk factor for rheumatoid arthritis (RA). Our study aimed to determine the effect of Pg and its LPS on the expression of peptidyl arginine deiminase isotypes (PADs) in human primary chondrocytes (HC). HCs were infected with Pg and activated by its LPS (LPS-Pg). The mRNA expression levels of human PADs (1, 2, 3, 4 and 6) and bacterial enzyme (PADPg) were quantified by RT-qPCR. Cellular extracts served to measure the enzymatic activities of PADs and PADPg and to visualize the profiles of citrullinated proteins/peptides by Western blotting. Our data showed significant inhibitions of mRNA expressions of human PAD-2, PAD-3 and PAD-4 during infection of HC with live Pg. Activation of HC by LPS-Pg increased mRNA expressions of human PAD-2 and PAD-3. The PADPg enzymatic activity was significantly increased in only infected HC. Analysis of citrullinated proteins/peptides profiles revealed the occurrence of low molecular bands only in cellular extracts from HC infected with Pg. Our data showed that Pg and its LPS differentially regulate the expression of PADs in human chondrocytes and that Pg favors the apparition of new citrullinated proteins/peptides.
Porphyromonas gingivalis and its lipopolysaccharide differently modulate epidermal growth factor-dependent signaling in human gingival epithelial cells
Rene Elkaim, Isaac Bugueno Valdebenito, Nadia Jessel, Henri Tenenbaum
Journal of Oral Microbiology, 2017, 9 (1), ⟨10.1080/20002297.2017.1334503⟩
Article dans une revueAbstractPeriodontitis is an inflammatory disease induced by pathogenic bacteria such as Porphyromonas gingivalis. Little is known about epidermal growth factor (EGF) signals in human gingival epithelial cells (HGEC), which are major targets of P. gingivalis, and how the expression of proteins participating in EGF signaling-that is, EGF-receptor (EGFR), suppressor of cytokine signaling-3 (SOCS-3), interferon regulatory factor-1 (IRF-1), and signal transducers and activators of transcription (STAT-3)-are modified. This study aimed to assess the effects of P. gingivalis and its purified lipopolysaccharide (LPS-Pg) on EGF signaling. HGEC were infected for 2 h in a dose-dependent manner with P. gingivalis and with heat-killed P. gingivalis, and activated for 2 and 24 h by 1 microg/mL of purified LPS-Pg. Quantitative reverse transcription polymerase chain reaction and Western blotting were performed to measure mRNA and protein levels for SOCS-3, IRF-1 EGF, EGFR, and STAT-3. The tyrosine-phosphorylation status of STAT-3 was also examined. The results showed that infection of HGEC cells with P. gingivalis, but not with heat-killed P. gingivalis, led to significant reductions in expression levels of mRNAs and proteins for SOCS-3, IRF-1, and EGFR, while LPS-Pg over time significantly increased the expression of these mRNAs and proteins. Tyrosine-phosphorylation of STAT-3 was significantly increased during infection with P. gingivalis and activation by LPS-Pg but not modified during infection with heat-killed P. gingivalis. This study highlights that P. gingivalis and its purified LPS differentially modulated the expression of proteins (SOCS-3, IRF-1, EGFR, and STAT-3) interfering with EGF signaling.
BCGitis: An unusual complication after intravesical immunotherapy
Pierrick Le Borgne, Claudia Brunhuber, Florent Baicry, Carine Zumstein, Mickael Forato, Pascal Bilbault
Therapies, 2017, 72 (4), pp.509-511. ⟨10.1016/j.therap.2016.12.013⟩
Article dans une revueAn unusual cause of acute respiratory failure
Pierrick Le Borgne, Claudia Brunhuber, Claire Kam, Charles-Eric Lavoignet, Pascal Bilbault
Revue des Maladies Respiratoires, 2017, 34 (3), pp.268-270. ⟨10.1016/j.rmr.2016.09.003⟩
Article dans une revueSodium-channel blocker challenge in the familial screening of Brugada syndrome: safety and predictors of positivity
Dylan Therasse, Frédéric Sacher, Bertrand Petit, Dominique Babuty, Philippe Mabo, Raphael Martins, Laurence Jesel, Philippe Maury, Jean Luc Pasquie, Jacques Mansourati, Jean Marc Dupuis, Florence Kyndt, Aurélie Thollet, Beatrice Guyomarch, Julien Barc, Jean-Jacques Schott, Hervé Le Marec, Richard Redon, Vincent Probst, Jean-Baptiste Gourraud
Heart Rhythm, 2017, 14 (10), pp.1442-1448. ⟨10.1016/j.hrthm.2017.06.031⟩
Article dans une revueAbstractBackground - Sodium-channel blocker challenge (SCBC) is frequently performed to unmask Brugada syndrome. Objective - We aim to identify predictors of positivity and complications of SCBC in the setting of familial screening of Brugada syndrome. Methods - All consecutive patients from 2000 to 2014 who benefit from a sodium-channel blocker and belong to a family with at least 2 subjects affected by the syndrome were enrolled and followed prospectively. Data were reviewed by 2 physicians blinded to the clinical and genetic status. Results - Of the 672 SCBCs performed in 137 families, 337 (50%) were positive. Multivariate analysis identified ajmaline (odds ratio [OR] 2.98; 95% CI 1.65-4.91) and a significant S wave in lead DII (OR 3.11; 95% CI 2.12-4.58), DIII (OR 2.75; 95% CI 1.78-4.25), or V (OR 3.71; 95% CI 2.54-5.44) as predictors of a positive SCBC (P < .0001). Eleven patients (1.6%) presented complications (10 ventricular arrhythmias and 1 atrial flutter), but no deaths occurred. Familial history of complications (OR 41; lower quartile, upper quartile 10, 203; P < .0001), young age (P = .04), and decreased electrocardiographic conduction parameters at baseline (P = .04) were predictors of complications. QRS enlargement during SCBC was not associated with complications. During a median follow-up of 106 months (lower quartile, upper quartile 54, 143 months), 11 life-threatening arrhythmias occurred. Conclusion - SCBC in the screening of familial Brugada syndrome is safe. The risk of complication is considerably increased in the case of familial history of complicated SCBC, in young patients, and in the presence of decreased electrocardiographic conduction parameters. However, QRS enlargement during the test is not directly related to complications and should not be used to prematurely stop the test unless leading to false-negative results.
Rivaroxaban versus standard anticoagulation for symptomatic venous thromboembolism (REMOTEV observational study): Analysis of 6-month outcomes
Sébastien Gaertner, Elena-Mihaela Cordeanu, Salah Nouri, Alix-Marie Faller, Anne-Sophie Frantz, Corina Mirea, Pascal Bilbault, Patrick Ohlmann, Isabelle Le Ray, Dominique Stephan
International Journal of Cardiology, 2017, 226, pp.103-109. ⟨10.1016/j.ijcard.2016.10.045⟩
Article dans une revueAbstractBackground: This study aimed to provide safety and efficacy data of rivaroxaban in routine patient care in a non-selected symptomatic venous thromboembolism (VTE) population. Methods and results: REMOTEV is a prospective, non-interventional study of patients with acute symptomatic VTE, treated with oral rivaroxaban, VKA or parenteral heparin/fondaparinux alone for at least 3 months and who are followed up for 6 months. From Nov. 2013 to July 2015, 499 consecutive patients were retained for baseline analysis and 445 for safety analysis. The mean age was 65.1 years, 7.6% had previously known active cancer, 18.6% had creatinine clearance 30 <= CrCl < 60 mL/min, and 87.8% had pulmonary embolism with or without deep venous thrombosis. The major and clinically relevant bleeding rate was 5.4% (15/280) in the rivaroxaban group, 9.4%/(9/96) in the VKA group and 7.2% (5/69) in the heparin/fondaparinux group. The recurrent VTE rate was 1.4% (4/280) in the rivaroxaban group, 3.1% (3/96) in the VKA group and 11.6% (8/69) in the heparin/fondaparinux group. In the propensity score-adjusted samples, major and clinically relevant non-major bleeding (HR 0.37 [95% CI, 0.15 to 0.93], p < 0.05), all-cause death (HR 0.21 [95% CI, 0.06 to 0.66], p < 0.01) and the composite of recurrent VTE, major and clinically relevant non-major bleeding and all-cause mortality (HR 0.35 [95% CI, 0.17 to 0.71], p < 0.01), were significantly lower in the rivaroxaban group compared to the VKA group. Conclusion: In REMOTEV 6-month outcomes are consistent with the findings of the phase 3 randomized trials and post-marketing data, with low rates of major bleeding and symptomatic recurrent VTE. (C) 2016 Elsevier Ireland Ltd. All rights reserved.
Unexpected Problems of Antithrombotic Therapy with An Unusual Side Effect of Vitamin K Antagonists after Mitral Valve Replacement
Benjamin Marchandot, Nathan Messas, Laurence Jesel, Annie Trinh, Marion Kibler, Antje Reydel, Patrick Ohlmann, Olivier Morel
Journal of Heart Valve Disease, 2017, 26 (3), pp.309-313
Article dans une revueAbstractExcept for bleeding complications, vitamin K antagonists (VKAs) are known to have few undesirable side effects. Herein is presented the case of a 45-year-old woman in whom liver damage was induced by fluindione and warfarin after mitral valve replacement. Hepatotoxicity is a rare complication of VKAs, both in the French National and Drug Safety registry and the medical literature. A diagnosis of VKA-induced drug damage was confirmed by the absence of other etiologies, the chronological sequence, recurrence after re-exposure to VKA, and rapid improvements after discontinuation of the drug. Despite possible cross-reactions between VKAs, the re-introduction of acenocoumarol was successfully achieved, with no recurrence of biological disturbances.
Two-year follow-up after endobronchial coil treatment in emphysema: results from the REVOLENS study
Gaëtan Deslee, Sylvie Leroy, Jeanne Marie Perotin, Herve Mal, Hervé Dutau, Arnaud Bourdin, Jean Michel Vergnon, Christophe M. Pison, Romain Kessler, Vincent Jounieaux, Mathieu Salaün, Armelle Marceau, Sandra Dury, Jonathan Benzaquen, Margaux Bonnaire, Sylvain Dukic, Coralie Barbe, Charles Hugo Marquette
European Respiratory Journal, 2017, 50 (6), pp.1701740. ⟨10.1183/13993003.01740-2017⟩
Article dans une revueAbstractSevere emphysema is a difficult to treat condition with limited efficacy of currently available treatments. Endobronchial coil treatment (ECT) is a minimally invasive endobronchial treatment which consists of placing shape-memory nitinol coils in emphysematous lobes to enhance lung recoil and reduce lung hyperinflation at rest and during exercise [1, 2]. Randomised studies demonstrated an improvement in exercise capacity, lung function and quality of life, and showed an acceptable safety profile at 1 year [3–6]. However, to our best knowledge, longer term safety and effectiveness results beyond 1 year have not been reported thus far. REVOLENS (Réduction volumique endobronchique par spirales) (NCT01822795) is a 1:1 randomised controlled study of 100 patients (50 patients treated with coils and optimal medical management and 50 patients treated with optimal medical management only) in 10 centres across France. Patients treated with optimal medical management only were offered coil treatment after 1 year. The study protocol [7] and 1-year results [5] of the REVOLENS study have been previously described, demonstrating a decrease in lung hyperinflation and improvement in quality of life. In the present study, we analysed efficacy and safety data at 2 years in the 50 patients randomised to the ECT group.
Une cause sous-estimée de convulsion en Europe
Chloé Godoffe, Pierrick Le Borgne, Claire Kam, Mihaela Mihalcea-Danciu, Pascal Bilbault, Philippe Kauffmann
Revue médicale suisse, 2017, 13 (567), pp.1263-1265
Article dans une revueAbstractLes convulsions sont un motif fréquent de consultation aux urgences. Nous présentons ici le cas d’une jeune patiente qui illustre une cause rare de conv...
Concomitant repair of tetralogy of Fallot and an aortic root aneurysm in an adult
Stephanie Perrier, Sebastien Gerelli, Tam Hoang Minh, Philippe Billaud, Jean-Philippe Mazzucotelli, Michel Kindo
Journal of Cardiac Surgery, 2017, 32 (1), pp.57-59. ⟨10.1111/jocs.12870⟩
Article dans une revueAbstractWe reported the case of a 56-year-old male with tetralogy of Fallot associated with an aneurysm of the aortic root and severe aortic insufficiency. Repair of the aortic aneurysm along with a complete tetralogy repair was performed.
Evidence of Netosis in Septic Shock-Induced Disseminated Intravascular Coagulation
Xavier Delabranche, Laure Stiel, Francois Severac, Anne-Cecile Galoisy, Laurent Mauvieux, Fatiha Zobairi, Thierry Lavigne, Florence Toti, Eduardo Anglès-Cano, Ferhat Meziani, Julie Helms
Shock, 2017, 47 (3), pp.313-317. ⟨10.1097/SHK.0000000000000719⟩
Article dans une revueAbstractINTRODUCTION: Neutrophils extracellular traps (NETs) have recently emerged as a new potential link between inflammation, immunity, and thrombosis and could play a key role in septic shock-induced disseminated intravascular coagulation (DIC) pathogenesis. The objective of our study was to investigate a potential link between NETosis and septic shock-induced DIC. METHODS: Twenty patients with septic shock (10 without and 10 with DIC according to JAAM 2006 score) were prospectively included in our study. Vascular cell activation was assessed by microparticle (MP) measurement. NETosis was investigated at days 1, 3, and 7 using two different approaches: probing and measurement of neutrophil DNA decompaction by neutrophil-side fluorescence light (NEUT-SFL) as recorded by an automated blood cell cytometer and the assessment of nucleosomes and NETs (DNA-bound myeloperoxidase, DNA-MPO). RESULTS: Endothelial-derived CD105-MPs, leucocyte-derived CD11a-MPs/leucocyte, and neutrophil-derived CD66b-MPs/neutrophil count ratios significantly increased in DIC compared with non-DIC patients, indicating on-going cell activation (P <0.05). NEUT-SFL, indicating DNA decompaction, was significantly higher in DIC patients. Circulating nucleosomes and DNA-MPO were increased in DIC patients (P <0.05). There were significant correlations between: nucleosomes and NETs (r = 0.397, P = 0.004), NEUT-SFL and nucleosomes (r = 0.243, P = 0.032), NEUT-SFL and DNA-MPO (r = 0.266, P = 0.024). CONCLUSION: NEUT-SFL, NETs, and elevated nucleosome concentrations were all correlated to DIC (P <0.05). We have shown that NETosis is significantly correlated to septic shock-induced DIC.
Lipid Emulsions Containing Medium Chain Triacylglycerols Blunt Bradykinin-Induced Endothelium-Dependent Relaxation in Porcine Coronary Artery Rings
Said Amissi, Julie Boisramé-Helms, Mélanie Burban, Sherzad Khorsheed Rashid, Antonio Leon Gonzalez, Cyril Auger, Florence Toti, Ferhat Meziani, Valerie Schini-Kerth
Lipids, 2017, 52 (3), pp.235-243. ⟨10.1007/s11745-016-4225-y⟩
Article dans une revueDulaglutide protects beta cells against cytokine stress mimicking islet transplantation
Guillaume Kreutter, Mohamad Kassem, Ali El Habhab, L Lamoura, Kévin Valliere, Blandine Yver, Florence Toti, Laurence Kessler, Geneviève Ubeaud-Sequier
Transplant International, 2017, 30, pp.281-281
Article dans une revueEffect of pro-senescent endothelial microparticles on rat pancreatic islets: impact for transplantation
Mohamad Kassem, Guillaume Kreutter, Ali El Habhab, Philippe Baltzinger, Lamia Amoura, Malak Abbas, Blandine Yver, Valerie Schini-Kerth, Florence Toti, Laurence Kessler
Transplant International, 2017, 30, pp.304-304
Article dans une revuePain control in thoracic oncology
Christine Peeters-Asdourian, Gilbert Massard, Paragi H. Rana, Paul van Houtte, Andrew P. White, Bogdan Grigoriu, Dominique Lossignol, Mohammed Almalki, Jean Alexiou, Jean-Luc Engelholm, Jean-Paul Sculier
European Respiratory Journal, 2017, 50 (3), ⟨10.1183/13993003.00611-2017⟩
Article dans une revueAbstractThis review of pain management in lung cancer is based on the presentation of four cases of thoracic oncology patients with pain at various stages of their disease. The approach will be multidisciplinary, involving a thoracic oncologist, radiologist, thoracic and orthopaedic spine surgeon, radiation therapist, pain medicine specialist, and palliative care specialist. This multispecialty approach to the management of different painful presentations in thoracic oncology will demonstrate the complexity of each case and the improved patient outcomes which result from the involvement of different disciplines working in concert.In the USA, Europe and other countries, palliative care specialists often become rapidly involved in the management of these patients, coordinating social care and providing psychological support.Thoracic and orthopaedic spine subspecialists provide surgical methods to control tumour invasion, and improve quality of life and preservation of function in settings of even diffuse metastatic disease. Similarly, thoracic oncology and radiation therapists utilise both therapeutic and palliative chemotherapeutic and radiation therapy regimens to prolong and improve quality of life.The pain medicine specialist can, in addition to medication management, offer a variety of interventional approaches including unique drug delivery systems such as epidural analgesia, regional anaesthesia techniques, and intrathecal pumps, as well as neuromodulation techniques and neurolytic or neuroablative procedures.In the USA, these specialists complete an additional fellowship year in pain medicine following the completion of an anaesthesiology, physical medicine and rehabilitation, neurology or psychiatry residency. These programmes are accredited by the Accreditation Council for Graduate Medical Education, or ACGME (www.acgme.org).
Cacao Polyphenols Potentiate Anti-Platelet Effect of Endothelial Cells and Ameliorate Hypercoagulatory States Associated with Hypercholesterolemia
Sj Kim, Sin-Hee Park, Hye-Won Lee, Valerie B. Schini-Kerth, Oron Kwon, Ki Won Lee, Min-Ho Oak
Journal of Nanoscience and Nanotechnology, 2017, 17 (4), pp.2817-2823. ⟨10.1166/jnn.2017.13317⟩
Article dans une revueAbstractPlatelets are related to the formation of blood clots that play a crucial role in thrombosis and other cardiovascular diseases. Cocoa, derived from Theobroma cocoa, has been widely used as functional food for improving cardiovascular health. In the present study, the direct and indirect effects of cacao polyphenols (CPs) were investigated on human platelet aggregation associated with endothelial cells (ECs) senescence. In addition, the effect of CPs on high-fat diet-(HFD-) induced hypercoagulatory states in rats was evaluated. CPs directly inhibited the human platelet aggregation induced by thromboxane analogue, U46619, and treatment of CPs on senescent endothelial cells markedly restored inhibitory effect of ECs on platelet aggregation. Nitric oxide (NO) from ECs is known as modulator of platelet aggregation and CPs increased eNOS activity in ECs and coronary artery. In animal model, increased TG level induced by high fat diet (HFD) was significantly decreased by CPs administration. In addition, the HFD animal had shorter bleeding time, and CPs administration attenuated the HFD-induced changes. Taken together, the present study indicates that CPs have potent anti-platelet effects most likely by direct and indirect effect via ECs and have the potential for lowering the risk of cardiovascular disease-related hypercoagulation due to hypercholesterolemia.
Thoracic surgery training in Europe-the perspective of a trainee
Anna Elisabeth Frick, Gilbert Massard
Journal of Thoracic Disease, 2017, 9 (Suppl 3), ⟨10.21037/jtd.2017.03.138⟩
Article dans une revueAbstractDuration and content of Thoracic surgery training differs considerably across Europe, leading to unequal levels of knowledge, skills and attitudes at the time of graduation as a specialist. The European Board of Thoracic Surgery examination strives to overcome these regional differences by offering a diploma to achieve harmonization and equal qualified certification. The HERMES initiative, driven by a joint task force from European Society of Thoracic Surgeons (ESTS) and European Respiratory Society (ERS) is currently establishing a consensual syllabus and curriculum for Thoracic Surgery to standardize content of training and achieve equal levels of qualification all-over Europe. In this context, new opportunities in teaching and learning have become available and should be considered to support and encourage for beneficial development in the future. International platforms are the key for connecting with experts and other trainees and are provided by annual meetings and within the ESTS School.
Docosahexaenoic acid, but not eicosapentaenoic acid, improves septic shock-induced arterial dysfunction in rats
Alexandra Boivin, Mélanie Burban, Raphaël Clere-Jehl, Pierrick Le Borgne, Hamid Merdji, Cyril Auger, Valerie Schini-Kerth, Ferhat Meziani, Julie Helms
PLoS ONE, 2017, 12 (12), pp.e0189658. ⟨10.1371/journal.pone.0189658⟩
Article dans une revueAbstractIntroduction: Long chain n-3 fatty acid supplementation may modulate septic shock-induced host response to pathogen-induced sepsis. The composition of lipid emulsions for parenteral nutrition however remains a real challenge in intensive care, depending on their fatty acid content. Because they have not been assessed yet, we aimed at determining the respective effects of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) during septic shock-induced vascular dysfunction. Methods: In a peritonitis-induced septic shock model, rats were infused with EPA, DHA, an EPA/DHA mixture or 5% dextrose (D5) during 22 hours. From H18, rats were resuscitated and monitored during 4 hours. At H22, plasma, aorta and mesenteric resistance arteries were collected to perform ex vivo experiments. Results: We have shown that septic rats needed an active resuscitation with fluid challenge and norepinephrine treatment, while SHAM rats did not. In septic rats, norepinephrine requirements were significantly decreased in DHA and EPA/DHA groups (10.6±12.0 and 3.7±8.0 μg/kg/min respectively versus 17.4±19.3 μg/kg/min in D5 group, p<0.05) and DHA infusion significantly improved contractile response to phenylephrine through nitric oxide pathway inhibition. DHA moreover significantly reduced vascular oxidative stress and nitric oxide production, phosphorylated IκB expression and vasodilative prostaglandin production. DHA also significantly decreased polyunsaturated fatty acid pro-inflammatory mediators and significantly increased several anti-inflammatory metabolites. Conclusions: DHA infusion in septic rats improved hemodynamic dysfunction through decreased vascular oxidative stress and inflammation, while EPA infusion did not have beneficial effects.
The Society for Translational Medicine: clinical practice guidelines for the postoperative management of chest tube for patients undergoing lobectomy
Shugeng Gao, Zhongheng Zhang, Javier Aragon, Alessandro Brunelli, Stephen Cassivi, Ying Chai, Chang Chen, Chun Chen, Gang Chen, Haiquan Chen, Jin-Shing Chen, David Tom Cooke, John B Downs, Pierre-Emmanuel Falcoz, Wentao Fang, Pier Luigi Filosso, Xiangning Fu, Seth D Force, Martínez I Garutti, Diego Gonzalez-Rivas, Dominique Gossot, Henrik Hansen, Jianxing He, Jie He, Bo Laksáfoss Holbek, Jian Hu, Yunchao Huang, Mohsen Ibrahim, Andrea Imperatori, Mahmoud Ismail, Gening Jiang, Hongjing Jiang, Zhongmin Jiang, Hyun Koo Kim, Danqing Li, Gaofeng Li, Hui Li, Qiang Li, Xiaofei Li, Yin Li, Zhijun Li, Eric Lim, Chia-Chuan Liu, Deruo Liu, Lunxu Liu, Yongyi Liu, Kevin W Lobdell, Haitao Ma, Weimin Mao, Yousheng Mao, Juwei Mou, Calvin Sze Hang Ng, Nuria M Novoa, René H Petersen, Hiroyuki Oizumi, Kostas Papagiannopoulos, Cecilia Pompili, Guibin Qiao, Majed Refai, Gaetano Rocco, Erico Ruffini, Michele Salati, Agathe Seguin-Givelet, Alan Dart Sihoe, Lijie Tan, Qunyou Tan, Tang Tong, Kosmas Tsakiridis, Federico Venuta, Giulia Veronesi, Nestor Villamizar, Haidong Wang, Qun Wang, Ruwen Wang, Shumin Wang, Gavin M Wright, Deyao Xie, Qi Xue, Tao Xue, Lin Xu, Shidong Xu, Songtao Xu, Tiansheng Yan, Fenglei Yu, Zhentao Yu, Chunfang Zhang, Lanjun Zhang, Tao Zhang, Xun Zhang, Xiaojing Zhao, Xuewei Zhao, Xiuyi Zhi, Qinghua Zhou
Journal of Thoracic Disease, 2017, 9 (9), pp.3255-3264. ⟨10.21037/jtd.2017.08.165⟩
Article dans une revueAbstractThe Society for Translational Medicine and The Chinese Society for Thoracic and Cardiovascular Surgery conducted a systematic review of the literature in an attempt to improve our understanding in the postoperative management of chest tubes of patients undergoing pulmonary lobectomy. Recommendations were produced and classified based on an internationally accepted GRADE system. The following recommendations were extracted in the present review: (I) chest tubes can be removed safely with daily pleural fluid of up to 450 mL (non-chylous and non-sanguinous), which may reduce chest tube duration and hospital length of stay (2B); (II) in rare instances, e.g., persistent abundant fluid production, the use of PrRP/B <0.5 when evaluating fluid output to determine chest tube removal might be beneficial (2B); (III) it is recommended that one chest tube is adequate following pulmonary lobectomy, except for hemorrhage and space problems (2A); (IV) chest tube clearance by milking and stripping is not recommended after lung resection (2B); (V) chest tube suction is not necessary for patients undergoing lobectomy after first postoperative day (2A); (VI) regulated chest tube suction [-11 (-1.08 kPa) to -20 (1.96 kPa) cmH(2)O depending upon the type of lobectomy] is not superior to regulated seal [-2 (0.196 kPa) cmH(2)O] when electronic drainage systems are used after lobectomy by thoracotomy (2B); (VII) chest tube removal recommended at the end of expiration and may be slightly superior to removal at the end of inspiration (2A); (VIII) electronic drainage systems are recommended in the management of chest tube in patients undergoing lobectomy (2B).
A Five-Year Follow-Up of a Root Fracture in a Ten-Year-Old Boy
Delphine Wagner, Damien Offner, Anne-Marie Musset
International Orthodontics, 2017, 15 (4), pp.728-739. ⟨10.1016/j.ortho.2017.09.013⟩
Article dans une revueAbstractThe management of horizontal root fracture still presents a challenge to clinicians. The case of a 10-year-old boy with a horizontal root fracture in the left maxillary central incisor (tooth number 21) is described here. The fracture was present at the junction of the apical and the middle thirds. We report both the emergency care and the 5-year follow-up. At the same time, an orthodontic treatment was planned for a retained maxillary cuspid (tooth number 23), first composed of a high-pull headgear and then by a fixed multi-bracket appliance. Today, the tooth number 21 remains vital and symptomless. This report highlights the successful management of a horizontally fractured tooth requiring orthodontic treatment. Our work also underlines the advantages of 3D images [cone-beam computed tomography (CBCT)] in positive and differential diagnosis especially in the event of a suspicion of post-traumatic complication.
18F-FDG PET/CT for the diagnosis of malignant and infectious complications after solid organ transplantation: a retrospective analysis of eight years of clinical practice.
Nastassja Muller, Romain Kessler, Sophie Caillard-Ohlmann, Eric Epailly, Fabrice Hubele, Céline Heimburger, Izzie-Jacques Namer, Raoul Herbrecht, Cyrille Blondet, Alessio Imperiale
European Journal of Nuclear Medicine and Molecular Imaging, 2017, ⟨10.1007/s13139-016-0461-6⟩
Article dans une revueAbstractPURPOSE: Infection and malignancy represent two common complications after solid organ transplantation, which are often characterized by poorly specific clinical symptomatology. Herein, we have evaluated the role of 18F-fluoro-2-deoxy-D-glucose (FDG) positron emission tomography/computed tomography (PET/CT) in this clinical setting. METHODS: Fifty-eight consecutive patients who underwent FDG PET/CT after kidney, lung or heart transplantation were included in this retrospective analysis. Twelve patients underwent FDG PET/CT to strengthen or confirm a diagnostic suspicion of malignancies. The remaining 46 patients presented with unexplained inflammatory syndrome, fever of unknown origin (FUO), CMV or EBV seroconversion during post-transplant follow-up without conclusive conventional imaging. FDG PET/CT results were compared to histology or to the finding obtained during a clinical/imaging follow-up period of at least 6 months after PET/CT study. RESULTS: Positive FDG PET/CT results were obtained in 18 (31 %) patients. In the remaining 40 (69 %) cases, FDG PET/CT was negative, showing exclusively a physiological radiotracer distribution. On the basis of a patient-based analysis, FDG PET/CT's sensitivity, specificity, PPV and NPV were respectively 78 %, 90 %, 78 % and 90 %, with a global accuracy of 86 %. FDG PET/CT was true positive in 14 patients with bacterial pneumonias (n = 4), pulmonary fungal infection (n = 1), histoplasmosis (n = 1), cutaneous abscess (n = 1), inflammatory disorder (sacroiliitis) (n = 1), lymphoma (n = 3) and NSCLC (n = 3). On the other hand, FDG PET/CT failed to detect lung bronchoalveolar adenocarcinoma, septicemia, endocarditis and graft-versus-host disease (GVHD), respectively, in four patients. FDG PET/CT contributed to adjusting the patient therapeutic strategy in 40 % of cases. CONCLUSIONS: FDG PET/CT emerges as a valuable technique to manage complications in the post-transplantation period. FDG PET/CT should be considered in patients with severe unexplained inflammatory syndrome or FUO and inconclusive conventional imaging or to discriminate active from silent lesions previously detected by conventional imaging particularly when malignancy is suspected.
FL3, A LIGAND OF THE SCAFFOLD PROTEIN PROHIBITIN, INHIBITS THE PROGRESSION TO COLORECTAL CANCER
Jie Han, Qian Zhao, Christine C. Basmadjian, Laurent Desaubry, Arianne L. Theiss
Gastroenterology, 2017, 152 (5), ⟨10.1016/S0016-5085(17)30411-0⟩
Article dans une revueExtracorporeal Membrane Oxygenation for Acute Respiratory Distress Syndrome After Pneumonectomy
Jeremie Reeb, Anne Olland, Julien Pottecher, Xavier Delabranche, Mickaël Schaeffer, Stéphane Renaud, Nicola Santelmo, Romain Kessler, Gilbert Massard, Pierre-Emanuel Falcoz
Annals of Thoracic Surgery, 2017, 103 (3), pp.881-889. ⟨10.1016/j.athoracsur.2016.11.038⟩
Article dans une revueAbstractBackground. Postpneumonectomy acute respiratory distress syndrome (ppARDS) is a life-threatening condition with a disastrous prognosis. This study assessed the efficacy of venovenous extracorporeal membrane oxygenation (VV-ECMO) in adult patients with unresponsive severe ppARDS. Methods. We retrospectively reviewed data of all patients treated with VV-ECMO for ppARDS from January 2009 to December 2015. We calculated the Sequential Organ Failure Assessment score before ECMO insertion and monitored the subsequent mechanical ventilation settings. The primary end point was hospital survival. The secondary end point was the ability to achieve a protective ventilatory strategy allowing lung recovery on ECMO. Results. VV-ECMO was indicated in 8 ppARDS patients for refractory hypoxemia (median partial pressure of arterial oxygen/fraction of inspired oxygen: 68 [range, 60 to 75] mm Hg). Median Sequential Organ Failure Assessment before ECMO was 15 (range, 12 to 17), predicting a mortality rate greater than 80%. Median duration of ECMO was 9.5 (range, 5 to 16) days. Tidal volumes and plateau pressures both decreased on ECMO (preECMO tidal volume: 412 [range, 250 to 450 mL] vs ECMO tidal volume: 277 [range, 105 to 367 mL], p [0.0156; preECMO plateau pressure: 34 [range, 32 to 40] cm H2O vs ECMO plateau pressure: 24.5 [range, 23.3 to 27.3] cm H2O, p = 0.0195). ECMO could be weaned in 7 patients (87.5%). Hospital survival was 50%. Conclusions. Hospital survival was better than predicted before ECMO insertion. In severe and refractory ppARDS, VV-ECMO allows lung recovery and therefore increased survival. (C) 2017 by The Society of Thoracic Surgeons
Smart Implants as a Novel Strategy to Regenerate Well-Founded Cartilage
Laetitia Keller, Pascale Schwinte, Enrique Gomez-Barrene, Manuel Arruebo, Nadia Benkirane-Jessel
Trends in Biotechnology, 2017, 35 (1), pp.8-11. ⟨10.1016/j.tibtech.2016.05.008⟩
Article dans une revueEffects of maxillary disjunction on canine impaction in patients presenting a maxillary transverse skeletal deficiency
Julien Wolff, Renaud Rinkenbach, Bruno Grollemund, Delphine Wagner
Orthodontie Française, 2017, ⟨10.1051/orthodfr/2017017⟩
Article dans une revueLe carcinome muco-épidermoïde du palais : présentation de deux cas et revue de la littérature
Thomas Bridonneau, Émilie Quinque, Simone Zink, Philippe Schultz, Fabien Bornert, Alina Onea, Sophie Riehm, Olivier Étienne, Sophie Bahi-Gross
Médecine Buccale Chirurgie Buccale, 2017, 23 (1), pp.37-44. ⟨10.1051/mbcb/2016029⟩
Article dans une revueAbstract<b>Introduction<b></b> : Le carcinome muco-épidermoïde (CME) est une tumeur maligne rare qui se développe à partir des glandes salivaires. Son traitement comporte la chirurgie associée ou non à la radiothérapie en fonction du grade histologique. <b>Observation<b></b> : Nous rapportons les cas de découverte fortuite de CME chez deux jeunes filles adressées par leur chirurgien-dentiste traitant. L’examen a mis en évidence une lésion maculaire ou papulaire de couleur violacée localisée au niveau du palais dur. L’examen anatomopathologique a confirmé le diagnostic d’un CME de bas grade dans les deux cas. Une tomographie volumique par faisceau conique, un scanner cervico-thoraco-abdomino-pelvien et une imagerie par résonance magnétique ont été réalisés dans le cadre du bilan d’extension. Le traitement a consisté dans les deux cas en une exérèse de la lésion avec marge. Une prothèse obturatrice a été mise en place en per-opératoire pour fermer la communication bucco-nasale. Dans un cas, une reconstruction de la perte de substance par un lambeau de rotation palatin a été effectuée au bout de 2 ans de suivi. <b>Discussion<b></b> : La découverte d’un CME chez des jeunes patients est rare. Ces deux observations permettent de faire le point sur la prise en charge de ce type de cancer en fonction des caractéristiques histologiques.</b></b></b>
Enhanced Peripheral Nerve Regeneration by a High Surface Area to Volume Ratio of Nerve Conduits Fabricated from Hydroxyethyl Cellulose/Soy Protein Composite Sponges
Yanteng Zhao, Qiang Zhang, Lei Zhao, Li Gan, Li Yi, Yanan Zhao, Jingling Xue, Lihua Luo, Qiaoyue Du, Rongxin Geng, Zhihong Sun, Nadia Benkirane-Jessel, Pu Chen, Yinping Li, Yun Chen
ACS Omega, 2017, 2 (11), pp.7471-7481. ⟨10.1021/acsomega.7b01003⟩
Article dans une revueAbstractMultichannel nerve guide conduits (MCNGCs) have been widely studied and exhibited outstanding nerve repair function. However, the effect of the geometric structure of MCNGCs on the nerve repair function was still not clear. Herein, we postulated that MCNGCs with different inner surface area-to-volume ratios (ISA/V) of the channels inside the nerve guide conduits (NGCs) would show different nerve repair functions. Therefore, in current work, we constructed a series of hydroxyethyl cellulose/soy protein sponge-based nerve conduit (HSSN) with low, medium, and high ISA/V from hydroxyethyl cellulose (HEC)/soy protein isolate (SPI) composite sponges, which were abbreviated as HSSN-L, HSSN-M and HSSNH, respectively. These NGCs were applied to bridge and repair a 10 mm long sciatic nerve defect in a rat model. Finally, the influence of ISA/V on nerve repair function was evaluated by electrophysiological assessment, histological investigation, and in vivo biodegradability testing. The results of electrophysiological assessment and histological investigation showed that the regenerative nerve tissues bridged with HSSN-H and HSSN-M had higher compound muscle action potential amplitude ratio, higher percentage of positive NF200 and S100 staining, larger axon diameter, lower G-ratio, and greater myelination thickness. Furthermore, the regenerative nerve tissues bridged with HSSN-H also showed higher density of regenerated myelinated nerve fibers and more number of myelin sheath layers. On the whole, the repair efficiency of the peripheral nerve in HSSN-H and HSSN-M groups might be better than that in HSSN-L. These results indicated that higher ISA/V based on HEC/SPI composite sponge may result in greater nerve repair functions. The conclusion provided a probable guiding principle for the structural designs of NGCs in the future.
Cardiovascular effects of air pollution
Thomas Bourdrel, Marie-Abèle Bind, Yannick Béjot, Olivier Morel, Jean-François Argacha
Archives of Cardiovascular Diseases, 2017, 110 (11), pp.634-642. ⟨10.1016/j.acvd.2017.05.003⟩
Article dans une revueAbstractAir pollution is composed of particulate matter (PM) and gaseous pollutants, such as nitrogen dioxide and ozone. PM is classified according to size into coarse particles (PM10), fine particles (PM2.5) and ultrafine particles. We aim to provide an original review of the scientific evidence from epidemiological and experimental studies examining the cardiovascular effects of outdoor air pollution. Pooled epidemiological studies reported that a 10μg/m3 increase in long-term exposure to PM2.5 was associated with an 11% increase in cardiovascular mortality. Increased cardiovascular mortality was also related to long-term and short-term exposure to nitrogen dioxide. Exposure to air pollution and road traffic was associated with an increased risk of arteriosclerosis, as shown by premature aortic and coronary calcification. Short-term increases in air pollution were associated with an increased risk of myocardial infarction, stroke and acute heart failure. The risk was increased even when pollutant concentrations were below European standards. Reinforcing the evidence from epidemiological studies, numerous experimental studies demonstrated that air pollution promotes a systemic vascular oxidative stress reaction. Radical oxygen species induce endothelial dysfunction, monocyte activation and some proatherogenic changes in lipoproteins, which initiate plaque formation. Furthermore, air pollution favours thrombus formation, because of an increase in coagulation factors and platelet activation. Experimental studies also indicate that some pollutants have more harmful cardiovascular effects, such as combustion-derived PM2.5 and ultrafine particles. Air pollution is a major contributor to cardiovascular diseases. Promotion of safer air quality appears to be a new challenge in cardiovascular disease prevention.
Chronic effects of air pollution on lung function after lung transplantation in the Systems prediction of Chronic Lung Allograft Dysfunction (SysCLAD) study
Meriem Benmerad, Remy Slama, Karine Botturi, Johanna Claustre, Antoine Roux, Edouard Sage, Martine Reynaud-Gaubert, Carine Gomez, Romain Kessler, Olivier Brugiere, Jean-Francois Mornex, Sacha Mussot, Marcel Dahan, Veronique Boussaud, Isabelle Danner-Boucher, Claire Dromer, Christiane Knoop, Annick Auffray, Johanna Lepeule, Laure Malherbe, Frederik Meleux, Laurent Nicod, Antoine Magnan, Christophe Pison, Valerie Siroux
European Respiratory Journal, 2017, 49 (1), ⟨10.1183/13993003.00206-2016⟩
Article dans une revueAbstractAn irreversible loss in lung function limits the long-term success in lung transplantation. We evaluated the role of chronic exposure to ambient air pollution on lung function levels in lung transplant recipients (LTRs). The lung function of 520 LTRs from the Cohort in Lung Transplantation (COLT) study was measured every 6 months. The levels of air pollutants (nitrogen dioxide (NO2), particulate matter with an aerodynamic cut-off diameter of x mu m (PMx) and ozone (O-3)) at the patients' home address were averaged in the 12 months before each spirometry test. The effects of air pollutants on forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC) in % predicted were estimated using mixed linear regressions. We assessed the effect modification of macrolide antibiotics in this relationship. Increased 12-month levels of pollutants were associated with lower levels of FVC % pred (-2.56%, 95% CI -3.86―1.25 for 5 mu g.m(-3) of PM10; -0.75%, 95% CI -1.38―0.12 for 2 mu g.m(-3) of PM2.5 and -2.58%, 95% CI -4.63―0.53 for 10 mu g.m(-3) of NO2). In patients not taking macrolides, the deleterious association between PM and FVC tended to be stronger and PM10 was associated with lower FEV1. Our study suggests a deleterious effect of chronic exposure to air pollutants on lung function levels in LTRs, which might be modified with macrolides.
Présentation d’un cas âgé de 10 ans souffrant d’une fracture radiculaire, le suivi sur 5 ans
Delphine Wagner, Damien Offner, Anne-Marie Musset
International Orthodontics, 2017, 15 (4), pp.728-739. ⟨10.1016/j.ortho.2017.09.014⟩
Article dans une revueAnti-inflammatory effect of active nanofibrous polymeric membrane bearing nanocontainers of atorvastatin complexes
Pascale Schwinte, Alexandre Mariotte, Priya Anand, Laetitia Keller, Ysia Idoux-Gillet, Olivier Huck, Florence Fioretti, Henri Tenenbaum, Philippe Georgel, Wolfgang Wenzel, Silvia Irusta, Nadia Benkirane-Jessel
Nanomedicine, 2017, 12 (23), pp.2651-2673. ⟨10.2217/nnm-2017-0198⟩
Article dans une revueAbstractAim: We developed polymeric membranes for local administration of nonsoluble anti-inflammatory statin, as potential wound patch in rheumatic joint or periodontal lesions. Methods: Electrospun polycaprolactone membranes were fitted with polysaccharide-atorvastatin nanoreservoirs by using complexes with poly-aminocyclodextrin. Characterization methods are UV-Visible and X-ray photoelectron spectroscopy, molecular dynamics, scanning and transmission electron microscopy. In vitro, membranes were seeded with macrophages, and inflammatory cytokine expression were monitored. Results & conclusion: Stable inclusion complexes were formed in solution (1:1 stability constant 368 M-1, -117.40 kJ mol(-1)), with supramolecular globular organization (100 nm, substructure 30 nm). Nanoreservoir technology leads to homogeneous distribution of atorvastatin calcium trihydrate complexes in the membrane. Quantity embedded was estimated (70-90 mu g in 30 mu m x 6 mm membrane). Anti-inflammatory effect by cell contact-dependent release reached 60% inhibition for TNF-alpha and 80% for IL-6. The novelty resides in the double protection offered by the cyclodextrins as drug molecular chaperones, with further embedding into biodegradable nanoreservoirs. The strategy is versatile and can target other diseases.
Predictors of Atrial Fibrillation After Coronary Artery Bypass Grafting: A Bayesian Analysis
Stéphanie Perrier, Nicolas Meyer, Tam Hoang Minh, Tarek Announe, Jonathan Bentz, Philippe Billaud, Arnaud Mommerot, Jean-Philippe Mazzucotelli, Michel Kindo
Annals of Thoracic Surgery, 2017, 103 (1), pp.92-97. ⟨10.1016/j.athoracsur.2016.05.115⟩
Article dans une revueAbstractBACKGROUND: This study was conducted to identify preoperative predictors of postoperative atrial fibrillation (POAF) after isolated coronary artery bypass grafting (CABG) by using a Bayesian analysis that included information from prior studies. METHODS: We performed a prospective observational study from October 2008 to December 2013 of 1,481 patients who underwent isolated CABG with cardiopulmonary bypass and had no history of AF. Bayesian analysis was used to study the preoperative risks factors for POAF. RESULTS: The POAF incidence was 21%. Multivariate analysis identified the following independent predictors of POAF after CABG: high CHA2DS2-VASc (Congestive heart failure, Hypertension [blood pressure >140/90 mm Hg or treated hypertension on medication], Age ≥75 years, Diabetes mellitus, prior Stroke or transient ischemic attack or thromboembolism, vascular disease, Age 65 to 74 years, Sex category [female sex]) score (odds ratio [OR], 1.23; 95% credible interval [CI], 1.14 to 1.33 per 1-point increment, probability (Pr) [OR > 1] = 1), severe obesity with a body mass index of 35 kg/m2 or higher (OR, 1.28; 95% CI, 1.12 to 1.45; Pr [OR > 1] = 1), preoperative β-blocker use (OR, 1.12; 95% CI, 1.06 to 1.20; Pr [OR > 1] = 1), preoperative antiplatelet therapy (OR, 1.75; 95% CI, 1.14 to 2.79, Pr [OR > 1] = 1), and renal insufficiency with a creatinine clearance of less than 60 mL/min (OR, 1.34; 95% CI, 1.03 to 1.74; Pr [OR > 1] = 1). CONCLUSIONS: This prospective Bayesian analysis identified five independent preoperative predictors of POAF after isolated CABG with cardiopulmonary bypass: CHA2DS2-VASc score, severe obesity, preoperative β-blocker use, preoperative antiplatelet therapy, and renal failure. The main interest in the CHA2DS2-VASc score as a predictor of POAF is that it is a simple and widely used bedside tool. Patients with these independent predictors of POAF may constitute a target population to test preventive strategies, such as non-antiarrhythmic and antiarrhythmic drugs.
Video-assisted thoracoscopic surgery is a safe option for benign lung diseases requiring lobectomy
Antonio Mazzella, Anne Olland, Elena Garelli, Stéphane Renaud, Jérémie Reeb, Nicola Santelmo, Pierre Emmanuel Falcoz, Gilbert Massard
Surgical Endoscopy, 2017, 31 (3), pp.1250-1256. ⟨10.1007/s00464-016-5099-z⟩
Article dans une revueAbstractLobectomy for benign lung disease is renowned to be technically complex and to be subjected to an increased complication rate. The objective of this study was to evaluate whether the results obtained with video-assisted surgery (VATS) in benign disease are comparable to those obtained in oncologic surgery, where VATS has been validated. We have reviewed the files of 246 consecutive patients who underwent VATS lobectomy from January 2012 to August 2015. The cohort was divided into two groups according to pathology (benign or malignant). Outcome parameters on scrutiny were demographics, pathology, duration of air leak, drainage and hospital stay, conversion, and perioperative complication rate. Comparisons were made with the chi (2) test and Student's t test; any p value ae0.05 was considered as significant. Group 1 (36 patients) included patients who underwent lobectomy for benign disease and group 2 (210 patients) patients affected by lung cancer or pulmonary metastases. The two groups differed with reference to age (p < 0.001), history of cancer (p < 0.001), history of stroke (p = 0.05), and the presence of pleural adhesions (p = 0.03). There was no difference for duration of air leaks, chest tube drainage and hospital stay, conversion rate, and perioperative complication rate. We conclude that pathology did not impact on outcomes after VATS lobectomy. This study suggests that VATS is as a safe option in selected patients with benign disease requiring lobectomy, despite a more complex technical context.
Alloimmune Monitoring after Islet Transplantation: A Prospective Multicenter Assessment of 25 Recipients
Vaihere Delaune, Christian Toso, Pierre-Yves Benhamou, Anne Wojtusciszyn, Laurence Kessler, Florence Slits, Sandrine Demuylder-Mischler, Nadine Pernin, Sandrine Lablanche, Lorenzo Orci, Graziano Oldani, Philippe Morel, Thierry Berney, Stéphanie Lacotte
Cell Transplantation, 2016, 25 (12), pp.2259 - 2268. ⟨10.3727/096368916X692023⟩
Article dans une revueAbstractIslet transplantation is an effective treatment for selected patients with type 1 diabetes. However, an accurate test still lacks for the early detection of graft rejection. Blood samples were prospectively collected in four university centers (Geneva, Grenoble, Montpellier, and Strasbourg). Peripheral blood mononuclear cells were stimulated with donor splenocytes in the presence of interleukin-2. After 24 h of incubation, interferon- (IFN-) ELISpot analysis was performed. After a total of 5 days of incubation, cell proliferation was assessed by fluorescence-activated cell sorting (FACS) analysis for Ki-67. Immunological events were correlated with adverse metabolic events determined by loss of 1 point of -score and/or an increased insulin intake 10%. Twenty-five patients were analyzed; 14 were recipients of islets alone, and 11 combined with kidney. Overall, 76% (19/25) reached insulin independence at one point during a mean follow-up of 30.7 months. IFN- ELISpot showed no detectable correlation with adverse metabolic events [area under the curve (AUC)=0.57]. Similarly, cell proliferation analysis showed no detectable correlation with adverse metabolic events (CD3+/CD4+ AUC=0.54; CD3+/CD8+ AUC=0.55; CD3/CD56+ AUC=0.50). CD3/CD56+ cell proliferation was significantly higher in patients with combined kidney transplantation versus islet alone (6 months, p=0.010; 12 months, p=0.016; and 24 months, p=0.018). Donor antigen-stimulated IFN- production and cell proliferation do not predict adverse metabolic events after islet transplantation. This suggests that the volume of transplanted islets is too small to produce a detectable systemic immune response and/or that alloimmune rejection is not the sole reason for the loss of islet graft function.
From theory to bench confirmation or from bench to theory
Julien Demiselle, Frauke Tillmans, Andreas Koch, Peter Radermacher, Pierre Asfar
Intensive Care Medicine Experimental, 2016, 4 (1), ⟨10.1186/s40635-016-0113-2⟩
Article dans une revueAbstractIn this commentary, the authors discuss two possible approaches in experimental studies. The first approach is to replicate an experimentation in order to confirm or not previously published results. The second one is more theoretical and consists in estimating the expected effect of all the components of the problem. When theoretical calculations suggest a theoretical failure that contradicts previous published results, investigators are between a rock and a hard place. Indeed, how can already published data and theoretical likelihood of failure be reconciled?
Magnetic resonance evaluation of cardiac thrombi and masses by T1 and T2 mapping: an observational study
Thibault Caspar, Soraya El Ghannudi, Mickaël Ohana, Aïssam Labani, Aubrietia Lawson, Patrick Ohlmann, Olivier Morel, Michel de Mathelin, Catherine Roy, Afshin Gangi, Philippe Germain
International Journal of Cardiovascular Imaging, 2016, 33 (4), ⟨10.1007/s10554-016-1034-6⟩
Article dans une revueA General and Efficient Synthesis of 2-Pyridones, 2-Quinolinones, and 1-Isoquinolinones from Azine N -Oxides
Dong Wang, Junjie Zhao, Yuxi Wang, Jianyong Hu, Linna Li, Longfei Miao, Hairong Feng, Laurent Désaubry, Peng Yu
Asian Journal of Organic Chemistry, 2016, 5 (12), pp.1442-1446. ⟨10.1002/ajoc.201600430⟩
Article dans une revueEndogenous Intoxication and Saliva Lipid Peroxidation in Patients with Lung Cancer
Lyudmila V. Bel'Skaya, Victor K. Kosenok, Gilbert Massard
Diagnostics, 2016, 6 (4), ⟨10.3390/diagnostics6040039⟩
Article dans une revueAbstractThis research was aimed at a search for regularities in changes to parameters of endogenous intoxication and saliva lipid peroxidation in patients with lung cancer, non-malignant lung diseases, and apparently healthy people. All patients went through saliva sampling at an amount of 1 mL. A concentration of malondialdehyde (MDA) was measured according to a reaction with thiobarbituric acid, and a level of middle molecules (MM) was measured with UV spectroscopy at 254 and 280 nm, while the content of lipid peroxidation products was measured according to a degree of heptane extract light absorption at wavelengths of 220, 232, 278, and 400 nm. It has been revealed that in the context of lung cancer, the level of diene conjugates decreases, increasing the level of triene conjugates, Schiff's bases, and MM. As a tumor grows, there is a decrease in the level of lipid peroxidation primary products and an increase in endotoxemia phenomena. The process is more apparent when going from local to locally advanced disease states. The nature of the MDA change is nonlinearly associated with tumor progression. The findings might be used to optimize traditional aids of diagnostics, in disease state forecasting, in treatment monitoring, etc.
Biventricular Takotsubo cardiomyopathy and "eclipsed" tricuspid regurgitation: insights from contrast right ventriculography
Nathan Messas, Olivier Morel, Olivier Collange, Hélène Kremer, Laurence Jesel, Patrick Ohlmann
EuroIntervention journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology, 2016, 12 (8), ⟨10.4244/EIJV12I8A174⟩
Article dans une revueKRAS in Non-Small-Cell Lung Cancer: Oncogenic Addiction and Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitors
Stéphane Renaud, Michèle Beau-Faller, Gilbert Massard
JAMA oncology, 2016, 2 (10), ⟨10.1001/jamaoncol.2016.2350⟩
Article dans une revueOptical Coherence Tomography to Optimize Results of Percutaneous Coronary Intervention in Patients with Non-ST-Elevation Acute Coronary Syndrome: Results of the Multicenter, Randomized DOCTORS Study (Does Optical Coherence Tomography Optimize Results of Stenting)
Nicolas Meneveau, Geraud Souteyrand, Pascal Motreff, Christophe Caussin, Nicolas Amabile, Patrick Ohlmann, Olivier Morel, Yoann Lefrançois, Vincent Descotes-Genon, Johanne Silvain, Nassim Braik, Romain Chopard, Marion Chatot, Fiona Ecarnot, Hélène Tauzin, Eric Van Belle, Loïc Belle, François Schiele
Circulation, 2016, 134 (13), pp.906-917. ⟨10.1161/CIRCULATIONAHA.116.024393⟩
Article dans une revueAbstractBACKGROUND: No randomized study has investigated the value of optical coherence tomography (OCT) in optimizing the results of percutaneous coronary intervention (PCI) for non-ST-segment elevation acute coronary syndromes. METHODS: We conducted a multicenter, randomized study involving 240 patients with non-ST-segment elevation acute coronary syndromes to compare OCT-guided PCI (use of OCT pre- and post-PCI; OCT-guided group) to fluoroscopy-guided PCI (angiography-guided group). The primary end point was the functional result of PCI assessed by the measure of post PCI fractional flow reserve. Secondary end points included procedural complications and type 4a periprocedural myocardial infarction. Safety was assessed by the rate of acute kidney injury. RESULTS: OCT use led to a change in procedural strategy in 50% of the patients in the OCT-guided group. The primary end point was improved in the OCT-guided group, with a significantly higher fractional flow reserve value (0.94±0.04 versus 0.92±0.05, P=0.005) compared with the angiography-guided group. There was no significant difference in the rate of type 4a myocardial infarction (33% in the OCT-group versus 40% in the angiography-guided group, P=0.28). The rates of procedural complications (5.8%) and acute kidney injury (1.6%) were identical in each group despite longer procedure time and use of more contrast medium in the OCT-guided group. Post-PCI OCT revealed stent underexpansion in 42% of patients, stent malapposition in 32%, incomplete lesion coverage in 20%, and edge dissection in 37.5%. This led to the more frequent use of poststent overdilation in the OCT-guided group versus the angiography-guided group (43% versus 12.5%, P<0.0001) with lower residual stenosis (7.0±4.3% versus 8.7±6.3%, P=0.01). CONCLUSIONS: In patients with non-ST-segment elevation acute coronary syndromes, OCT-guided PCI is associated with higher postprocedure fractional flow reserve than PCI guided by angiography alone. OCT did not increase periprocedural complications, type 4a myocardial infarction, or acute kidney injury. CLINICAL TRIAL REGISTRATION: URL: http://www.clinicaltrials.gov. Unique identifier: NCT01743274.
Establishment of a large panel of patient-derived preclinical models of human renal cell carcinoma
Hervé Lang, Claire Beraud, Audrey Bethry, Sabrina Danilin, Véronique Lindner, Catherine Coquard, Sylvie Rothhut, Thierry Massfelder
Oncotarget, 2016, 7 (37), pp.59336-59359. ⟨10.18632/oncotarget.10659⟩
Article dans une revueAbstractThe objective of the present work was to establish a large panel of preclinical models of human renal cell carcinoma (RCC) directly from patients, faithfully reproducing the biological features of the original tumor. RCC tissues (all stages/subtypes) were collected for 8 years from 336 patients undergoing surgery, xenografted subcutaneously in nude mice, and serially passaged into new mice up to 13 passages. Tissue samples from the primary tumor and tumors grown in mice through passages were analyzed for biological tissue stability by histopathology, mRNA profiling, von Hippel-Lindau gene sequencing, STR fingerprinting, growth characteristics and response to current therapies. Metastatic models were also established by orthotopic implantation and analyzed by imagery. We established a large panel of 30 RCC models (passage > 3, 8.9% success rate). High tumor take rate was associated with high stage and grade. Histopathologic, molecular and genetic characteristics were preserved between original tumors and case-matched xenografts. The models reproduced the sensitivity to targeted therapies observed in the clinic. Overall, these models constitute an invaluable tool for the clinical design of efficient therapies, the identification of predictive biomarkers and translational research.
Epithelial-mesenchymal transition in chronic lung allograft dysfunction. Role of leucocyte microparticles
Benjamin Renaud-Picard, Justine Toussaint, Fatiha El Ghazouani, Florence Toti, Laurence Kessler, Romain Kessler
European Respiratory Journal, 2016, 48, ⟨10.1183/13993003.congress-2016.OA3335⟩
Article dans une revueSynthesis of hydroxybenzofurans by condensation of quinones with benzoylacetone: revised structure of the adducts
Hassan Hammoud, Qian Zhao, Laurent Désaubry
Tetrahedron Letters, 2016, 57 (36), pp.4044-4045. ⟨10.1016/j.tetlet.2016.07.074⟩
Article dans une revueSpecific KRAS amino acid substitutions and EGFR mutations predict site-specific recurrence and metastasis following non-small-cell lung cancer surgery
Stéphane Renaud, Joseph Seitlinger, Pierre-Emmanuel Falcoz, Mickaël Schaeffer, Anne-Claire Voegeli, Michèle Legrain, Michèle Beau-Faller, Gilbert Massard
British Journal of Cancer, 2016, 115 (3), pp.346-353. ⟨10.1038/bjc.2016.182⟩
Article dans une revueAbstractBACKGROUND: We aimed to evaluate whether EGFR mutations (mEGFR) and KRAS amino acid substitutions can predict first site of recurrence or metastasis after non-small-cell lung cancer (NSCLC) surgery. METHODS: Data were reviewed from 481 patients who underwent thoracic surgery for NSCLC between 2007 and 2012. RESULTS: Patients with KRAS G12C developed significantly more bone metastases compared with the remainder of the cohort (59% vs 16%, P<0.0001). This was confirmed in multivariate analysis (MA) (odds ratio (OR): 0.113 (95% confidence interval (CI): 0.055-0.231), P<0.0001). Significantly, more patients with mEGFR developed liver and brain metastases compared with the remainder of the cohort (30% vs 10%, P=0.006; 59% vs 1%, P<0.0001, respectively). These were confirmed in MA (OR: 0.333 (95% CI: 0.095-0.998), P=0.05; OR: 0.032 (95% CI: 0.008-0.135), P<0.0001, respectively). Patients with KRAS G12V developed significantly more pleuro-pericardial metastases compared with the remainder of the cohort (94% vs 12%, P<0.0001). This was confirmed in MA (OR: 0.007 (95% CI: 0.001-0.031), P<0.0001). Wild-type patients developed significantly more lung metastases (35% vs 10%, P<0.0001). This was confirmed in MA (OR: 0.383 (95% CI: 0.193-0.762), P=0.006). CONCLUSION: Epidermal growth factor receptor mutation and KRAS amino acid substitutions seem to predict site-specific recurrence and metastasis after NSCLC surgery.
The spectrum of orofacial manifestations in systemic sclerosis: a challenging management
Sophie Jung, Thierry Martin, Mathieu Schmittbuhl, Olivier Huck
Oral Diseases, 2016, 23 (4), pp.424-439. ⟨10.1111/odi.12507⟩
Article dans une revueBioisosteric modification of flavaglines
Qian Zhao, Annemilaï Tijeras-Raballand, Armand de Gramont, Eric Raymond, Laurent Désaubry
Tetrahedron Letters, 2016, 57 (26), pp.2943-2944. ⟨10.1016/j.tetlet.2016.05.089⟩
Article dans une revueNEURO-07 - Prise en charge des méningites : évaluation des pratiques thérapeutiques dans un services des urgences adultes
J. Petitseigneur, Pascal Bilbault, Benoit Jaulhac, N. Lefebvre, M. Baldeyrou, N. Douiri, Xavier Argemi, D. Christmann, Yves Hansmann
Médecine et Maladies Infectieuses (1971-2020), 2016, 46 (4), pp.87. ⟨10.1016/S0399-077X(16)30471-1⟩
Article dans une revueClinical efficacy of probiotics as an adjunctive therapy to non-surgical periodontal treatment of chronic periodontitis: a systematic review and meta-analysis
Rodrigo Martin-Cabezas, Jean-Luc Davideau, Henri Tenenbaum, Olivier Huck
Journal of Clinical Periodontology, 2016, 43 (6), pp.520-30. ⟨10.1111/jcpe.12545⟩
Article dans une revueAbstractFOCUSED QUESTION: What is the clinical influence of probiotics as an adjunctive therapy of scaling and root planing (SRP) when compared with SRP alone or in combination with placebo in the treatment of chronic periodontitis (CP). METHODS: Electronic databases were searched up to July 2015. Randomized controlled trials (RCTs) comparing SRP + probiotic versusSRP were included. PPD reduction and CAL gain were selected as primary outcome variables. RESULTS: Independent screening resulted in four eligible publications for the systematic review and three were included in the meta-analysis. Meta-analysis showed a statistically significant CAL gain (-0.42 mm, p = 0.002) and bleeding on probing (BOP) reduction (-14.66, p = 0.003) for SRP + probiotic treatment versusSRP at short-term. Only a tendency (p = 0.06) has been observed in terms of overall PPD reduction, whereas results were significant when stratified for moderate (-0.18, p = 0.001) and deep pockets (-0.67, p < 0.001). CONCLUSION: Within the limitations of this study, the findings of this meta-analysis seem to support the adjunctive use of L. reuteri to SRP in CP treatment at short-term, especially in deep pockets. Heterogeneity and limited available data may reduce the impact of these conclusions. Future long-term RCTs evaluating the clinical efficacy of adjunctive probiotics to SRP are needed.
Three-dimensional Micro-culture System for Tooth Tissue Engineering
Sabine Bopp-Kuchler, Thibault Becavin, Tunay Kokten, Jean-Luc Weickert, Laetitia Keller, Hervé Lesot, Etienne Deveaux, Nadia Benkirane-Jessel
Journal of dental research, 2016, 95 (6), pp.657-64. ⟨10.1177/0022034516634334⟩
Article dans une revueAbstractThe arrangement of cells within a tissue plays an essential role in organogenesis, including tooth development. Progress is being made to regenerate teeth by reassociating dissociated embryonic dental cells and implanting them in vivo. In the present study, we tested the hanging drop method to study mixed epithelial-mesenchymal cell reorganization in a liquid instead of semisolid medium to see whether it could lead to tooth histogenesis and organogenesis. This method allowed the control of the proportion and number of cells to be used, and the forming microtissues showed homogeneous size. The liquid environment favored cell migrations as compared with collagen gels. Three protocols were compared. The one that sequentially combined the hanging drop and semisolid medium cultures prior to in vivo implantation gave the best results. Indeed, after implantation, teeth developed, showing a well-formed crown, mineralization of dentin and enamel, and the initiation of root formation. Vascularization and the cellular heterogeneity in the mesenchyme were similar to what was observed in developing molars. Finally, after coimplantation with a trigeminal ganglion, the dental mesenchyme, including the odontoblast layer, became innervated. The real advantage of this technique is the small number of cells required to make a tooth. This experimental model can be employed to study the development, physiology, metabolism, or toxicology in forming teeth and test other cell sources.
Systemic Application of Anti-inflammatory Agents in Periodontal Treatment
Kevimy Agossa, David-Nicolas Morand, Henri Tenenbaum, Jean-Luc Davideau, Olivier Huck
Clinical Anti-Inflammatory & Anti-Allergy Drugs, 2016, 2 (1), pp.3-13. ⟨10.2174/221270380201160517185229⟩
Article dans une revuePorphyromonas gingivalis Differentially Modulates Cell Death Profile in Ox-LDL and TNF-alpha Pre-Treated Endothelial Cells
Isaac Bugueno Valdebenito, Yacine Khelif, Narendra Seelam, David-Nicolas Morand, Henri Tenenbaum, Jean-Luc Davideau, Olivier Huck
PLoS ONE, 2016, 11 (4), ⟨10.1371/journal.pone.0154590⟩
Article dans une revueAbstractObjective Clinical studies demonstrated a potential link between atherosclerosis and periodontitis. Porphyromonas gingivalis (Pg), one of the main periodontal pathogen, has been associated to atheromatous plaque worsening. However, synergism between infection and other endothelial stressors such as oxidized-LDL or TNF-alpha especially on endothelial cell (EC) death has not been investigated. This study aims to assess the role of Pg on EC death in an inflammatory context and to determine potential molecular pathways involved. Methods Human umbilical vein ECs (HUVECs) were infected with Pg (MOI 100) or stimulated by its lipopolysaccharide (Pg-LPS) (1 mu g/ml) for 24 to 48 hours. Cell viability was measured with AlamarBlue test, type of cell death induced was assessed using Annexin V/propidium iodide staining. mRNA expression regarding caspase-1, -3, -9, Bcl-2, Bax-1 and Apaf-1 has been evaluated with RT-qPCR. Caspases enzymatic activity and concentration of APAF-1 protein were evaluated to confirm mRNA results. Results Pg infection and Pg-LPS stimulation induced EC death. A cumulative effect has been observed in Ox-LDL pre-treated ECs infected or stimulated. This effect was not observed in TNF-alpha pre-treated cells. Pg infection promotes EC necrosis, however, in infected Ox-LDL pre-treated ECs, apoptosis was promoted. This effect was not observed in TNF-alpha pre-treated cells highlighting specificity of molecular pathways activated. Regarding mRNA expression, Pg increased expression of pro-apoptotic genes including caspases-1,-3,-9, Bax-1 and decreased expression of anti-apoptotic Bcl-2. In Ox-LDL pre-treated ECs, Pg increased significantly the expression of Apaf-1. These results were confirmed at the protein level. Conclusion This study contributes to demonstrate that Pg and its Pg-LPS could exacerbate Ox-LDL and TNF-alpha induced endothelial injury through increase of EC death. Interestingly, molecular pathways are differentially modulated by the infection in function of the pre-stimulation.
Vascular access for extracorporeal life support: tips and tricks.
Jeremie Reeb, Anne Olland, Stéphane Renaud, Anne-Catherine Lejay, Nicola Santelmo, Gilbert Massard, Pierre-Emmanuel Falcoz
Journal of Thoracic Disease, 2016, 8 (Suppl 4), pp.S353-S363. ⟨10.21037/jtd.2016.04.42⟩
Article dans une revueAbstractIn thoracic surgery, extracorporeal life support (ECLS) techniques are performed to (I) provide a short to mid term extracorporeal mechanical support; (II) realize the gas exchanges; and (III)-depending the configuration of the circuit-substitute the failed heart function. The objective of this review is to describe the rational of the different ECLS techniques used in thoracic surgery and lung transplantation (LTx) with a specific attention to the vascular access. Venovenous extracorporeal membrane oxygenation (VV ECMO) is the most common ECLS technique used in thoracic surgery and represents the best strategy to support the lung function. VV ECMO needs peripheral vascular access. The selection between his double-site or single-site configuration should be decided according the level of O2 requirements, the nosological context, and the interest to perform an ECLS ambulatory strategy. Venoarterial (VA) ECMO uses peripheral and/or central cannulation sites. Central VA ECMO is mainly used in LTx instead a conventional cardiopulmonary bypass (CPB) to decrease the risk of hemorrhagic issues and the rate of primary graft dysfunction (PGD). Peripheral VA ECMO is traditionally realized in a femoro-femoral configuration. Femoro-femoral VA ECMO allows a cardiocirculatory support but does not provide an appropriate oxygenation of the brain and the heart. The isolated hypercapnic failure is currently supported by extracorporeal CO2 removal (ECCO2R) devices inserted in jugular or subclavian veins. The interest of the Novalung (Novalung GmbH, Hechingen, Germany) persists due to his central configuration indicated to bridge to LTx patients suffering from pulmonary hypertension. The increasing panel of ECLS technologies available in thoracic surgery is the results of a century of clinical practices, engineering progress, and improvements of physiological knowledges. The selection of the ECLS technique-and therefore the vascular access to implant the device-for a given nosological context trends to be defined according an evidence-based medicine.
Biventricular Takotsubo cardiomyopathy triggered by myocardial ischemic injury: insights from multimodal imaging approach
Ulun Crimizade, Nathan Messas, Cyrille Blondet, Laurence Jesel, Elena Duculescu, Patrick Ohlmann, Olivier Morel
International Journal of Cardiology, 2016, 207, pp.104-106. ⟨10.1016/j.ijcard.2016.01.081⟩
Article dans une revuePre-PCI angiographic TIMI flow in the culprit coronary artery influences infarct size and microvascular obstruction in STEMI patients
M. J. Schaaf, Nathan Mewton, Gilles Rioufol, D. Angoulvant, G. Cayla, N. Delarche, B. Jouve, P. Guerin, G. Vanzetto, P. Coste, Olivier Morel, François Roubille, M. Elbaz, O. Roth, F. Prunier, T. T. Cung, C. Piot, I. Sanchez, E. Bonnefoy-Cudraz, D. Revel, C. Giraud, P. Croisille, Michel Ovize
Journal of Cardiology, 2016, 67 (3), pp.248-53. ⟨10.1016/j.jjcc.2015.05.008⟩
Article dans une revuePostpartum hemorrhage: guidelines for clinical practice from the French ă College of Gynaecologists and Obstetricians (CNGOF) in collaboration ă with the French Society of Anesthesiology and Intensive Care (SFAR)
Loïc Sentilhes, Christophe Vayssière, Catherine Deneux-Tharaux, Antoine Guy Aya, Francoise Bayoumeu, Marie-Pierre Bonnet, Rachid Djoudi, Patricia Dolley, Michel Dreyfus, Chantal Ducroux-Schouwey, Corinne Dupont, Anne François, Denis Gallot, Jean-Baptiste Haumonté, Cyril Huissoud, Gilles Kayem, Hawa Keïta, Bruno Langer, Alexandre Mignon, Olivier Morel, Olivier Parant, Jean-Pierre Pelage, Emmanuelle Phan, Mathias Rossignol, Véronique Tessier, Frederic J. Mercier, François Goffinet
European Journal of Obstetrics & Gynecology and Reproductive Biology, 2016, 198, pp.12-21. ⟨10.1016/j.ejogrb.2015.12.012⟩
Article dans une revueAbstractPostpartum haemorrhage (PPH) is defined as blood loss >= 500 mL after ă delivery and severe PPH as blood loss >= 1000 mL, regardless of the ă route of delivery (professional consensus). The preventive ă administration of uterotonic agents just after delivery is effective in ă reducing the incidence of PPH and its systematic use is recommended, ă regardless of the route of delivery (Grade A). Oxytocin is the first ă line prophylactic drug, regardless of the route of delivery (Grade A); a ă slowly dose of 5 or 10 IU can be administered (Grade A) either IV or IM ă (professional consensus).After vaginal delivery, routine cord drainage ă (Grade B), controlled cord traction (Grade A), uterine massage (Grade ă A), and routine bladder voiding (professional consensus) are not ă systematically recommended for PPH prevention. After caesarean delivery, ă placental delivery by controlled cord traction is recommended (grade B). ă The routine use of a collector bag to assess postpartum blood loss at ă vaginal delivery is not systematically recommended (Grade B), since the ă incidence of severe PPH is not affected by this intervention. In cases ă of overt PPH after vaginal delivery, placement of a blood collection bag ă is recommended (professional consensus). The initial treatment of PPH ă consists in a manual uterine examination, together with antibiotic ă prophylaxis, careful visual assessment of the lower genital tract, a ă uterine massage, and the administration of 5-10 IU oxytocin injected ă slowly IV or IM, followed by a maintenance infusion not to exceed a ă cumulative dose of 40 IU (professional consensus). If oxytocin fails to ă control the bleeding, the administration of sulprostone is recommended ă within 30 minutes of the PPH diagnosis (Grade C). Intrauterine balloon ă tamponade can be performed if sulprostone fails and before recourse to ă either surgery or interventional radiology (professional consensus). ă Fluid resuscitation is recommended for PPH persistent after first line ă uterotonics, or if clinical signs of severity (Grade B). The objective ă of RBC transfusion is to maintain a haemoglobin concentration (Hb) >8 ă g/dL. During active haemorrhaging, it is desirable to maintain a ă fibrinogen level >= 2 g/L (professional consensus). RBC, fibrinogen and ă fresh frozen plasma (FFP) may be administered without awaiting ă laboratory results (professional consensus). Tranexamic acid may be used ă at a dose of 1 g, renewable once if ineffective the first time in the ă treatment of PPH when bleeding persists after sulprostone administration ă (professional consensus), even though its clinical value has not yet ă been demonstrated in obstetric settings. It is recommended to prevent ă and treat hypothermia in women with PPH by warming infusion solutions ă and blood products and by active skin warming (Grade C). Oxygen ă administration is recommended in women with severe PPH (professional ă consensus). If PPH is not controlled by pharmacological treatments and ă possibly intra-uterine balloon, invasive treatments by arterial ă embolization or surgery are recommended (Grade C). No technique for ă conservative surgery is favoured over any other (professional ă consensus). Hospital-to-hospital transfer of a woman with a PPH for ă embolization is possible once hemoperitoneum is ruled out and if the ă patient's hemodynamic condition so allows (professional consensus). (C) ă 2015 Elsevier Ireland Ltd. All rights reserved.
Bilobectomy for lung cancer: contemporary national early morbidity and mortality outcomes
Pascal A. Thomas, Pierre-Emmanuel Falcoz, Alain Bernard, Françoise Le Pimpec-Barthes, Jacques Jougon, Laurent Brouchet, Gilbert Massard, Marcel Dahan, Anderson Loundou, Epithor Grp
European Journal of Cardio-Thoracic Surgery, 2016, 49 (2), pp.e38-e43. ⟨10.1093/ejcts/ezv407⟩
Article dans une revueAbstractTo determine contemporary early outcomes associated with bilobectomy for lung cancer and to identify their predictors using a nationally representative general thoracic surgery database. A total of 1831 patients, who underwent elective bilobectomy for primary lung cancer between 1 January 2004 and 31 December 2013, were selected. Logistic regression analysis was performed on variables for major adverse events. There were 670 upper and 1161 lower bilobectomies. Video-assisted thoracic surgery was seldom performed (2%). Induction therapy and extended resection were performed in 293 (16%) and 279 patients (15.2%), respectively. Operative mortality was 4.8% (upper: 4.5%/lower: 5%; P = 0.62), and significantly higher following extended procedures when compared with standard bilobectomy (4.3 vs 7.5%; P = 0.013). Pulmonary complication rate was 21.1%. Bronchial fistula occurred in 46 patients (2.5%) and pleural space complications in 296 (16.2%). Their respective incidence rates were significantly higher following lower than upper bilobectomy (3.5 vs 0.7%; P < 0.001 and 17.8 vs 13.3%; P = 0.007). At multivariate analysis, extended procedures [odds ratio (OR), 2.3; 95% confidence interval (CI), 1.03-5.31; P = 0.04], ASA scores of 3 or greater (OR, 2.02; 95% CI, 1.33-3.07; P < 0.001) and World Health Organization performance status 2 or greater (OR, 1.47; 95% CI, 1.01-2.13; P = 0.04) were risk predictors of mortality. Female gender (OR, 0.39; 95% CI, 0.19-0.80; P = 0.01), highest body mass index (BMI) values (OR, 0.91; 95% CI, 0.86-0.96; P = 0.001) and recent years of surgery (OR, 0.91; 95% CI, 0.84-0.99; P = 0.02) were protective. Predictors of bronchial fistula were male gender, lowest BMI values, lower bilobectomy and longest operative times. Male gender, lowest BMI values and longest operative times were also predictors of pulmonary complications, together with highest ASA scores and lowest forced expiratory volume in 1 s values. Risks related to lower bilobectomy lie halfway between those reported for lobectomy and pneumonectomy. Additional surgical measures to prevent pleural space complications and bronchial fistula should be encouraged with this operation. In contrast, upper bilobectomy shares more or less the same hazards as lobectomy.
The Impact of Clinical and Genetic Findings on The Management of Young Brugada Syndrome Patients
Antoine Andorin, Elijah R. Behr, Isabelle Denjoy, Lia Crotti, Federica Dagradi, Laurence Jesel, Frederic Sacher, Bertrand Petit, Philippe Mabo, Alice Maltret, Leonie C. H. Wong, Bruno Degand, Geraldine Bertaux, Philippe Maury, Yves Dulac, Béatrice Delasalle, Jean-Baptiste Gourraud, Dominique Babuty, Nico A. Blom, Peter J. Schwartz, Arthur A. Wilde, Vincent Probst
Heart Rhythm, 2016, 13 (6), pp.1274-1282. ⟨10.1016/j.hrthm.2016.02.013⟩
Article dans une revueAbstractBackground - Brugada syndrome (BrS) is an arrhythmogenic disease associated with sudden cardiac death (SCD) that seldom manifests or is recognized in childhood. Objectives - The objectives of this study were to describe the clinical presentation of pediatric BrS to identify prognostic factors for risk stratification and to propose a data-based approach management. Methods - We studied 106 patients younger than 19 years at diagnosis of BrS enrolled from 16 European hospitals. Results - At diagnosis, BrS was spontaneous (n = 36, 34%) or drug-induced (n = 70, 66%). The mean age was 11.1 ± 5.7 years, and most patients were asymptomatic (family screening, (n = 67, 63%; incidental, n = 13, 12%), while 15 (14%) experienced syncope, 6(6%) aborted SCD or symptomatic ventricular tachycardia, and 5 (5%) other symptoms. During follow-up (median 54 months), 10 (9%) patients had life-threatening arrhythmias (LTA), including 3 (3%) deaths. Six (6%) experienced syncope and 4 (4%) supraventricular tachycardia. Fever triggered 27% of LTA events. An implantable cardioverter-defibrillator was implanted in 22 (21%), with major adverse events in 41%. Of the 11 (10%) patients treated with hydroquinidine, 8 remained asymptomatic. Genetic testing was performed in 75 (71%) patients, and SCN5A rare variants were identified in 58 (55%); 15 of 32 tested probands (47%) were genotype positive. Nine of 10 patients with LTA underwent genetic testing, and all were genotype positive, whereas the 17 SCN5A-negative patients remained asymptomatic. Spontaneous Brugada type 1 electrocardiographic (ECG) pattern (P = .005) and symptoms at diagnosis (P = .001) were predictors of LTA. Time to the first LTA event was shorter in patients with both symptoms at diagnosis and spontaneous Brugada type 1 ECG pattern (P = .006). Conclusion - Spontaneous Brugada type 1 ECG pattern and symptoms at diagnosis are predictors of LTA events in the young affected by BrS. The management of BrS should become age-specific, and prevention of SCD may involve genetic testing and aggressive use of antipyretics and quinidine, with risk-specific consideration for the implantable cardioverter-defibrillator.
Pénétration microbienne dans la connectique pilier-implant : revue de littérature
Sebastien Baixe, Henri Tenenbaum, O. Etienne
Revue de Stomatologie, de Chirurgie Maxillo-faciale et de Chirurgie Orale, 2016, 117 (1), pp.20-25. ⟨10.1016/j.revsto.2015.11.004⟩
Article dans une revueAbstractToday manufacturing process of dental implant parts allows for a precision of fit between implant and abutment of several microns. This microgap opens and closes under occlusal forces, leading to a pumping effect and to a contamination of the implant from bacteria and oral fluids. This kind of contamination is seen in all systems even if less often with internal connections that offers a better fit. Apart from this junction area, the screw well is another contamination pathway if the filling materials do not guarantee a hermetic sealing. The nature of contamination depends on the surrounding oral flora. When present, contamination leads to a persistent inflammatory reaction nearby the seal. The use of antiseptics or other materials for sealing the microgap decreases the risk of contamination and improves the gingival reaction. However, these solutions are time-limited. Keywords: Dental abutments; Dental implants; Implants dentaires; Peri-implantitis; Piliers implantaires; Péri-implantite.
An Unusual Cause of Abdominal Pain: Lupus Enteritis
Julien Demiselle, Johnny Sayegh, Maud Cousin, Anne Olivier, Jean-François Augusto
The american journal of medecine, 2016, 129 (5), ⟨10.1016/j.amjmed.2016.01.011⟩
Article dans une revueN2-IIIA non-small cell lung cancer: a plea for surgery!
Gilbert Massard, Stéphane Renaud, Jérémie Reeb, Nicola Santelmo, Anne Olland, Pierre-Emmanuel Falcoz
Journal of Thoracic Disease, 2016, 8 (Suppl 11), ⟨10.21037/jtd.2016.09.34⟩
Article dans une revueAbstractManagement of stage IIIA-N2 non-small cell lung cancer is still matter of ongoing controversy. The debate is flawed by the heterogeneity of this group of patients, lack of strong evidence from controlled trials, diverging treatment strategies, and hesitating estimation of prognosis. Surgery is credited a survival advantage in a trimodality setting. For many teams, N2 is by principle managed with induction chemotherapy, followed by surgery if the patient is down-staged. However, surgery remains a suitable option even in case of persistent N2. On the other hand, outcomes are comparable, regardless whether chemotherapy has been given as induction or adjuvant treatment. Hence, upfront surgery without invasive staging, followed by adjuvant therapies, appears reasonable in resectable single station N2 disease, simplifying patient care and reducing cost. We expect that molecular biomarkers will improve estimation of prognosis and patient selection in the future.
The Endocrine Pancreas, an Early Sensor of Senescence in Middle-Aged Rats: Impact for Transplantation
Mohamad Kassem, Zahid Rasul Niazi, Malak Abbas, Romain Vauchelles, Cyril Auger, Maria Antal, Valerie Schini-Kerth, Florence Toti, Laurence Kessler
Diabetes, 2016, 65
Article dans une revueAmbulatory treatment of dentinal hypersensitivity
Jacques Buxeraud, Olivier Huck
Actualités Pharmaceutiques, 2016, 55 (556), pp.47-50. ⟨10.1016/j.actpha.2016.03.011⟩
Article dans une revueAbstractDentinal hypersensitivity or hyperesthesia is often confused with sensitive gums because both conditions can be associated with each other. However, it is not treated at all in the same way. The pharmacist must be able to give appropriate advice for this common problem. (C) 2016 Elsevier Masson SAS. All rights reserved
The Effect of Quercus salicina Leaf Extracts on Vascular Endothelial Function: Role of Nitric Oxide
Sinhee Park, Hyun Koo Kim, Jun-Seong Yoon, Hye-Won Lee, Gye-Choon Park, Eunyoung Yi, Goo Yoon, Valerie Schini-Kerth, Min-Ho Oak
Journal of Nanoscience and Nanotechnology, 2016, 16 (2), pp.2069-2071. ⟨10.1166/jnn.2016.11930⟩
Article dans une revueAbstractDysfunction of the vascular endothelium is reported as a hallmark of cardiovascular diseases. Many evidences suggest that polyphenols are associated with a decreased global mortality and might be involved in protection against cardiovascular risk. This beneficial effect of polyphenol may be due to many actions as antioxidant that increases bioavailability of nitric oxide, vasodilation or antihypertensive properties. To identify new natural medicine candidate for cardiovascular protection, plant extracts used in traditional medicine were evaluated by vascular reactivity system. Porcine coronary artery rings were suspended in organ chambers for the measurement of changes in isometric tension. Screening results indicated that the ethanolic extract of leaf from Quercus salicina (QSE) has been found to exhibit potent vasorelaxant activity. QSE dose-dependently induced endothelium-dependent relaxations, which were abolished by inhibitors of nitric oxide synthase (N-omega-nitro-L-arginine). In addition, QSE strongly and dose-dependently activate endothelial nitric oxide synthase (eNOS) in porcine coronary artery endothelial cell. Taken together, the present study has demonstrated that QSE is a powerful endothelium-dependent vasodilator and that this effect involves increased nitric oxide bioavailability. In conclusion, QSE could be a cardiovascular protective herbal medicine candidate associated with cardiovascular diseases and endothelial dysfunction.
Acetaminophen-Induced Changes in Systemic Blood Pressure in Critically Ill Patients: Results of a Multicenter Cohort Study
Aymeric Cantais, David Schnell, François Vincent, Zeineb Hammouda, Sophie Perinel, Sarah Balichard, Fekri Abroug, Fabrice Zeni, Ferhat Meziani, Caroline Bornstain, Michael Darmon
Critical Care Medicine, 2016, 44 (12), pp.2192-2198. ⟨10.1097/CCM.0000000000001954⟩
Article dans une revueAbstractOBJECTIVES: We sought to assess the incidence of acetaminophen-induced hypotension. Our secondary objectives were to describe systemic hemodynamic changes and factors associated with this complication. DESIGN: Prospective observational study. SETTING: Three ICUs. PATIENTS: Adult patients requiring IV acetaminophen infusion. Arterial pressure was monitored via an arterial catheter for 3 hours. Hypotension was defined as a decrease in the mean arterial pressure of greater than or equal to 15% compared with the baseline. RESULTS: Overall, 160 patients were included in this study. Eighty-three patients (51.9%) experienced acetaminophen-induced hypotension according to our definition. In patients with acetaminophen-induced hypotension, the nadir mean arterial pressure was 64 mm Hg (95% CI, 54-74). Hypotension was observed 30 minutes (95% CI, 15-71) after acetaminophen infusion. Changes in mean arterial pressure were closely correlated with decreases in the diastolic arterial pressure (r = 0.92) and to a lesser extent with changes in the pulse pressure (r = 0.18) and heart rate (r = 0.09). Changes in the body temperature were not correlated with changes in mean arterial pressure (r = 0.0002; p = 0.85). None of the patients' baseline characteristics (shock, use of angiotensin-converting enzyme inhibitor/angiotensin II receptor blockers, lactates, renal replacement therapy, chronic heart disease, and indication for acetaminophen infusion) or clinically relevant characteristics (baseline severity according to Logistic Organ Dysfunction score, need for vasopressors, use of antihypertensive agents, need for mechanical ventilation, or changes in the body temperature) were independently associated with acetaminophen-induced hypotension. Among patients with acetaminophen-induced hypotension, 29 (34.9%) required therapeutic intervention. CONCLUSIONS: Half of the patients who received IV injections of acetaminophen developed hypotension, and up to one third of the observed episodes necessitated therapeutic intervention. Adequately powered randomized studies are needed to confirm our findings, provide an accurate estimation of the consequences of acetaminophen-induced hypotension, and assess the pathophysiologic mechanisms involved.
Well-organized spheroids as a new platform to examine cell interaction and behaviour during organ development
Thibault Bécavin, Sabine Kuchler-Bopp, Tunay Kökten, Olivier Huck, Nadia Messaddeq, Hervé Lesot, Etienne Deveaux, Nadia Benkirane-Jessel, Laetitia Keller
Cell and Tissue Research, 2016, 366 (3), pp.601-615. ⟨10.1007/s00441-016-2487-6⟩
Article dans une revueAbstractWe present an experimental method allowing the production of three-dimensional organ-like structures, namely microtissues (MTs), in vitro without the need for exogenous extracellular matrix (ECM) or growth factors. Submandibular salivary glands (embryonic day ED14), kidneys (ED13) and lungs (ED13) were harvested from mouse embryos and dissociated into single cells by enzyme treatment. Single cells were seeded into special hanging drop culture plates (InSphero) and cultured for up to 14 days to obtain MTs. This strategy permitted full control of the quantity of seeded cells. The development of the MTs into organs was followed histologically and immunohistochemically. Well-organized epithelial structures surrounded by a basal lamina were formed, as confirmed by transmission electron microscopy. Expression of E-cadherin, vimentin, fibronectin and α-SMA was compared in organs and corresponding MTs by real-time quantitative polymerase chain reaction. Branching morphogenesis was induced in MTs (as shown by histology and immunostaining for fibronectin and perlecan) and was conserved even after 14 days of culture. MTs continued their development and their epithelial structures were comparable with those of the physiological organ at postnatal day 2 (PN2). Expression of aquaporins was investigated to obtain better support for the functional differentiation of epithelial cells. Histogenesis proceeded and led to the start of organogenesis. This experimental model might improve our knowledge of epithelial-mesenchymal histogenesis and can be employed to study development or cellular organization during the embryonic formation of organs.
Circulating Microparticles from Patients with Acute Coronary Syndrome Promote Premature Senescence in Cultured Endothelial Cells: Role of Endothelium-Derived Microparticles and the Local Angiotensin System
Olivier Morel, Malak Abbas, Laurence Jesel, Cyril Auger, Lg Antonio, Nathan Messas, Patrick Ohlmann, Florence Toti, Valerie Schini-Kerth
Journal of Vascular Research, 2016, 53, pp.19-19
Article dans une revueAlveolar and circulating microparticles correlate with inflammatory ischemia reperfusion activation in a rodent model for ex vivo lung perfusion
Anne Olland, Jérémie Reeb, Florence Toti, Mélanie Burban, Cyril Auger, Pierre-Emmanuel Falcoz, Romain Kessler, Laurence Kessler, Valerie Schini-Kerth, Gilbert Massard
Transplant International, 2016, 29, pp.4-4
Article dans une revueTotal Artificial Heart and Chronic Haemodialysis: A Possible Bridge to Transplantation?
Julien Demiselle, Virginie Besson, Johnny Sayegh, Jean-François Subra, Jean-François Augusto
Blood Purification, 2016, 42 (4), pp.301-303. ⟨10.1159/000448162⟩
Article dans une revueAbstractBACKGROUND: Total artificial heart (TAH) device is sometimes necessary to treat end stage heart failure (HF). After surgery, renal impairment can occur with the need of renal replacement therapy. METHOD: We report the case of a 51-year-old man who was treated with conventional hemodialysis (HD) while on support with TAH. RESULTS: The patient underwent HD while on TAH support during 14 months. He benefited from conventional HD, 6 sessions per week. HD sessions were well tolerated, and patient's condition and quality of life improved significantly. The main difficulty was to maintain red blood cell level because of chronic hemolysis due to TAH, which required repetitive blood transfusions, resulting in a high rate of human leukocyte antigen sensitization. Unfortunately, the patient died of mesenteric ischemia due to anticoagulation under dosing. CONCLUSION: We conclude that HD treatment is possible despite TAH and should be considered in patients with both end stage renal and HF.
Bilateral renal infarction after discontinuation of anticoagulant therapy
Charles-Eric Lavoignet, Pierrick Le Borgne, Sarah Ugé, Rinaldo Veneziano, Claudia Brunhuber, Claire Kam, Pascal Bilbault
Néphrologie & Thérapeutique, 2016, 12 (4), pp.234-236. ⟨10.1016/j.nephro.2016.01.014⟩
Article dans une revueAbstractAcute renal infarction is an uncommon and often under diagnosed condition mostly because of misleading symptoms. Accurate data regarding clinical presentation, laboratory tests, diagnostic and treatment are lacking. Detection is often delayed or missed because of non-specific clinical presentation. The mechanisms of acute renal infarction are various, mainly embolic or thrombotic. Abdominal CT scan remains the most valuable exam to confirm the diagnosis. Therapeutic guidelines for the treatment of renal embolism have not been well established. The standard treatment strategy includes anticoagulation with or without thrombolysis. Despite the uncertainty regarding management, the renal outcome remains favorable. Some patients do develop some degree of renal insufficiency during the acute episode. We report here the case of a 73-year-old woman with bilateral acute renal infarction after discontinuation of anticoagulant therapy. (C) 2016 Association Societe de nephrologie. Published by Elsevier Masson SAS. All rights reserved.
Progressive Tracheal Erosion Consecutive to a Calcified Left Thyroid Lobe
Anne B. Olland, Pierre-Emmanuel Falcoz, Nicola Santelmo, Gilbert Massard
The annals of thoracic surgery, 2016, 101 (1), ⟨10.1016/j.athoracsur.2015.09.075⟩
Article dans une revueMaxillary and mandible contouring in patients with a head and neck area irradiation
Mélanie Rouers, Delphine Antoni, Anna Thompson, Pierre Truntzer, Qiu C. Haoming, Cyrielle Bourrier, Philippe Meyer, Sarah Dubourg, Valérie Ganansia, Sébastien Guihard, Fabien Bornert, Georges Noel
Practical Radiation Oncology, 2016, 6 (3), ⟨10.1016/j.prro.2015.10.003⟩
Article dans une revueAbstractPURPOSE: Dental care is crucial after irradiation of the head and neck. This care may include dental restoration, extractions, and prosthetic implantation or prosthesis adjustment. To perform these procedures safely, dentists need to know the delivered radiation dose delivered to the relevant part of the mandible and/or maxilla. We propose a simple, fast, and useful contouring technique to aid accurate recording of radiation therapy dose to the mandible and maxilla. METHODS AND MATERIALS: The maxilla and mandible of 2 patients, 1 dentate and 1 edentulous, have been contoured on computed tomography planning scans. The jaw has been divided into sextants (3 segments in both the mandible and maxilla) using bony landmarks. RESULTS: We have developed a contouring atlas to aid radiation oncologists in delineating the maxilla and mandible allowing accurate recording of dose to each sextant and meaningful communication with their dental colleagues. CONCLUSION: Delineation of the maxilla and mandible is important if we are to improve communication between radiation oncologists and dentists regarding radiation and risk to these structures. Our method should not increase the time to delineate the organs at risk and target volumes in the head and neck area and could improve the safety of subsequent dental treatments.
Superior sulcus non-small cell lung carcinoma: A comparison of IMRT and 3D-RT dosimetry
Pierre Truntzer, Delphine Antoni, Nicola Santelmo, Catherine Schumacher, Pierre-Emmanuel Falcoz, Elisabeth Quoix, Gilbert Massard, Georges Noël
Reports of Practical Oncology & Radiotherapy, 2016, 21 (5), pp.427-434. ⟨10.1016/j.rpor.2016.03.006⟩
Article dans une revueAbstractAIM: A dosimetric study comparing intensity modulated radiotherapy (IMRT) by TomoTherapy to conformational 3D radiotherapy (3D-RT) in patients with superior sulcus non-small cell lung cancer (NSCLC). BACKGROUND: IMRT became the main technique in modern radiotherapy. However it was not currently used for lung cancers. Because of the need to increase the dose to control lung cancers but because of the critical organs surrounding the tumors, the gains obtainable with IMRT is not still demonstrated. MATERIAL AND METHODS: A dosimetric comparison of the planned target and organs at risk parameters between IMRT and 3D-RT in eight patients who received preoperative or curative intent irradiation. RESULTS: In the patients who received at least 66 Gy, the mean V95% was significantly better with IMRT than 3D-RT (p = 0.043). IMRT delivered a lower D2% compared to 3D-RT (p = 0.043). The IH was significantly better with IMRT (p = 0.043). The lung V 5 Gy and V 13 Gy were significantly higher in IMRT than 3D-RT (p = 0.043), while the maximal dose (D max) to the spinal cord was significantly lower in IMRT (p = 0.043). The brachial plexus D max was significantly lower in IMRT than 3D-RT (p = 0.048). For patients treated with 46 Gy, no significant differences were found. CONCLUSION: Our study showed that IMRT is relevant for SS-NSCLC. In patients treated with a curative dose, it led to a reduction of the exposure of critical organs, allowing a better dose distribution in the tumor. For the patients treated with a preoperative schedule, our results provide a basis for future controlled trials to improve the histological complete response by increasing the radiation dose.
Ability to Deliver Safe Dental Care and Optimal Prosthetic Rehabilitation Are Correlating With Irradiation Doses in Maxillary and Mandible
Mélanie Rouers, D.N. Antoni, Fabien Bornert, Leonie C. H. Wong, Sarah Dubourg, Pierre Truntzer, H.C. Qiu, Anna Thompson, Cyrielle Bourrier, Philippe Meyer, Sébastien Guihard, Georges Noel
International Journal of Radiation Oncology, Biology, Physics, 2016, 96 (2), ⟨10.1016/j.ijrobp.2016.06.1521⟩
Article dans une revueCleaning of dental handpieces: a method to test its efficiency, and its evaluation with a washer-disinfector-lubricator-dryer
Damien Offner, Lucien Brisset, Anne-Marie Musset
Dentistry Open Journal, 2016, 3 (1), pp.10-16. ⟨10.17140/DOJ-3-129⟩
Article dans une revueLocoregional recurrence after VATS surgery for NSCLC
Pierre-Emmanuel Falcoz, Gilbert Massard
Journal of Thoracic Disease, 2016, 8 (12), ⟨10.21037/jtd.2016.12.54⟩
Article dans une revueLong-term follow up of post-surgical tooth autotransplantation: a retrospective study
Brenda Mertens, Abdessamad Boukari, Henri Tenenbaum
Journal of Investigative and Clinical Dentistry, 2016, 7 (2), pp.207-214. ⟨10.1111/jicd.12126⟩
Article dans une revueAbstractAIM: The aim of the present retrospective study was to evaluate the long-term results of tooth autotransplantation using the survival and success rates of transplanted teeth as outcome variables. METHODS: Thirty patients received a total of 44 transplants of immature teeth from 1987 to 1997. Seventeen of those patients with 25 transplants were recalled 10-20 years after tooth transplantation for complete clinical and radiographic examinations, followed by questionnaires that examined the patients' degrees of satisfaction. The incidence of all types of complications was carefully analyzed. Success was defined as being free of all complications over the entire observation period. RESULTS: The long-term survival rate for transplants that were observed after at least 10 years was 96%. The cumulative complication rate (pulpal, periodontal, and operative complication rates) after an observation period of 10-20 years was 38.9%. Therefore, the success rate at 10 years was 61.1%. CONCLUSION: The present study confirms that transplanted teeth have a high long-term survival rate and a lower long-term success rate. This procedure should be recommended and carried out in appropriate patients when necessary because it is the most biological approach, even though it is highly sensitive to technique.
Flavaglines Ameliorate Experimental Colitis and Protect Against Intestinal Epithelial Cell Apoptosis and Mitochondrial Dysfunction:
Jie Han, Qian Zhao, Christine Basmadjian, Laurent Désaubry, Arianne L. Theiss
Inflammatory Bowel Diseases, 2016, 22 (1), pp.55-67. ⟨10.1097/MIB.0000000000000592⟩
Article dans une revueAbstractBackground: Flavaglines are a family of natural compounds shown to have anti-inflammatory and cytoprotective effects in neurons and cardiomyocytes. Flavaglines target prohibitins as ligands, which are scaffold proteins that regulate mitochondrial function, cell survival, and transcription. This study tested the therapeutic potential of flavaglines to promote intestinal epithelial cell homeostasis and to protect against a model of experimental colitis in which inflammation is driven by epithelial ulceration. Methods: Survival and homeostasis of Caco2-BBE and IEC-6 intestinal epithelial cell lines were measured during treatment with the flavaglines FL3 or FL37 alone and in combination with the proinflammatory cytokines tumor necrosis factor (TNF) α and interferon γ. Wild-type mice were intraperitoneally injected with 0.1 mg/kg FL3 or vehicle once daily for 4 days during dextran sodium sulfate-induced colitis to test the in vivo anti-inflammatory effect of FL3. Results: FL3 and FL37 increased basal Caco2-BBE and IEC-6 cell viability, decreased apoptosis, and decreased epithelial monolayer permeability. FL3 and FL37 inhibited TNFα- and interferon γ-induced nuclear factor kappa B and Cox2 expression, apoptosis, and increased permeability in Caco2-BBE cells. FL3 and FL37 protected against TNFα-induced mitochondrial superoxide generation by preserving respiratory chain complex I activity and prohibitin expression. p38-MAPK activation was essential for the protective effect of FL3 and FL37 on barrier permeability and mitochondrial-derived reactive oxygen species production during TNFα treatment. Mice administered FL3 during dextran sodium sulfate colitis exhibited increased colonic prohibitin expression and p38-MAPK activation, preserved barrier function, and less inflammation. Conclusions: These results suggest that flavaglines exhibit therapeutic potential against colitis and preserve intestinal epithelial cell survival, mitochondrial function, and barrier integrity.
Outcome after video-assisted thoracoscopic surgery and open pulmonary lobectomy in patients with low VO2 max: a case-matched analysis from the ESTS database(aEuro)
Shah Sheikh Sofina Begum, Kostas Papagiannopoulos, Pierre-Emmanuel Falcoz, Herbert Decaluwe, Michele Salati, Alessandro Brunelli
European Journal of Cardio-Thoracic Surgery, 2016, 49 (4), pp.1054-1058. ⟨10.1093/ejcts/ezv378⟩
Article dans une revueAbstractThe aim was to verify the association of low VO2 max with postoperative morbidity and mortality after video-assisted thoracoscopic surgery (VATS) or open pulmonary lobectomy using the European Society of Thoracic Surgeons (ESTS) database. A retrospective analysis of data collected from the ESTS database was conducted. A total of 1684 lobectomy patients with available VO2 max values were included (2007-14). Patients operated through VATS (281 patients) or thoracotomy (1403 patients) were separately analysed. Propensity score analyses were performed to match patients with high (a parts per thousand yen15 ml/kg/min) and low VO2 max (< 15 ml/kg/min) for each approach. The following variables were used to construct the score: age, body mass index, predicted postoperative forced expiratory volume in 1 s (%), coronary artery disease, American Society of Anaesthesiology grade and Eastern Cooperative Oncology Group performance score. Cardiopulmonary morbidity and 30-day mortality were compared between the matched groups. Mean VO2 max was 17.4 ml/kg/min. A total of 471 patients (28%) had low VO2 max. Overall postoperative cardiopulmonary morbidity and mortality rates were 30% (505 patients) and 4.1% (70 patients), respectively. Morbidity and mortality rates in low VO2 max patients were 33% (156 patients) and 6% (28 patients), respectively. After VATS, cardiopulmonary morbidity and mortality rates were 2-fold (13 of 72, 18% vs 143 of 399, 36%, P = 0.003) and 5-fold (1 of 72, 1.4% vs 27 of 399, 6.7%, P = 0.09) lower compared with thoracotomy. Matched comparison after thoracotomy (399 pairs): Mortality was significantly higher in patients with low VO2 max (27 patients, 6.7%) compared with those with high VO2 max (11 patients, 2.8%, P = 0.008). Complication rates were similar between the two groups (low VO2 max: 143 patients, 36% vs high VO2 max: 133 patients, 33%, respectively, P = 0.5). Matched comparison after vats (72 pairs): Morbidity and mortality rates of patients with low VO2 max were similar to those of patients with high VO2 max (morbidity: 13 patients, 18% vs 17 patients, 24%, P = 0.4; mortality: 1 patient, 1.4% vs 4 patients, 5.5%, P = 0.4). Low VO2 max was not associated with an increased surgical risk after VAT lobectomy, which challenges the traditional operability criteria when this technique is used.
Une cause sous-estimée de cervicalgie fébrile [= An underestimated cause of febrile neck pain]
Pierrick Le Borgne, Philippe Kauffmann, Claudia Brunhuber, Joffrey Bidoire, Pascal Bilbault
La Revue de Médecine Interne, 2016, 37 (3), pp.215-216. ⟨10.1016/j.revmed.2015.06.016⟩
Article dans une revueEmpagliflozin, a Selective Sodium Glucose Co-transporter 2 Inhibitor, Prevents the High Glucose-induced Senescence in Cultured Endothelial Cells: Role of NADPH Oxidase and Cyclooxygenases
Sonia Khemais-Benkhiat, Malak Abbas, Phuong Nga Nguyen, Cyril Auger, Florence Toti, Eric Mayoux, Laurence Kessler, Valerie Schini-Kerth
Diabetes, 2016, 65
Article dans une revueDiagnostic des anomalies bucco-dentaires associées aux maladies rares.
François Clauss, Sophie Jung, Fabien Bornert, Agnès Bloch, Marie Cecile Maniere
Réalités Cliniques, 2016, pp.176-185
Article dans une revueVideo-assisted thoracoscopic lobectomy: which is the learning curve of an experienced consultant?
Antonio Mazzella, Anne Olland, Pierre Emmanuel Falcoz, Stephane Renaud, Nicola Santelmo, Gilbert Massard
Journal of Thoracic Disease, 2016, 8 (9), pp.2444-2453. ⟨10.21037/jtd.2016.08.23⟩
Article dans une revueAbstractBACKGROUND: This study evaluates the number of video-assisted thoracic surgery-lobectomies (VATS-lobectomies) required for an experienced consultant thoracic surgeon to obtain competence and to perform standard quality surgery. METHODS: We have analysed the initial VATS-experience (January 2012 to September 2014) of a confirmed senior consultant who has performed 145 consecutive anatomic resections by thoracoscopy. After excluding bilobectomies, segmentectomies, and lobectomies for infectious disease, we have focused into 119 consecutive lobectomies, classified into 4 chronologic groups of 30 each. We have considered: demographics; pathology; postoperative outcomes; conversion rate; morbidity. We compared the 4 groups in a Bayesian inference model (very strong probability of a difference if Pr>95% or <5%; strong probability if 95%>Pr>80% or 5%2=0.977, Pr1>3=0.96, Pr1>4=0.997) and, conversely, less radical dissections (Pr1<2=0.022, Pr1<3=0.039, Pr1<4=0.003), less harvested nodes (Pr1<2≤0.001, Pr1<3≤0.001, Pr1<4≤0.001), less pleural adhesions (Pr1<2=0.077, Pr1<3=0.044). Instead, there was a very strong probability of difference of group 4 compared to the first three groups (first 90 lobectomies): lower conversion rate (Pr1>4=0.992, Pr3>4=0.996, Pr2>4=0.995), lower duration of the operation (Pr1>4=0.946, Pr2>4=0.901, Pr3>4=0.932), less air leak (Pr1>4=0.936, Pr2>4=0.97) and shorter chest tube drainage (Pr1>4=0.94, Pr2>4=0.94, Pr3>4=0.937), as well as shorter hospital stay (Pr2>4=0.94, Pr3>4=0.937). CONCLUSIONS: The learning curve was bimodal. After the initial 30 lobectomies, oncologic quality of the procedure improved and stabilized. The surgeon became less selective and accepted to proceed with more complex cases (incomplete fissures, pleural adhesions). Efficiency was obtained after 90 lobectomies (shorter operative time and lower conversion rate).
Endothelium-independent vasorelaxant effect of a Berberis orthobotrys root extract via inhibition of phosphodiesterases in the poricine coronary artery
A Alamgeer, P Chabert, M S Akhtar, Q Jabeen, Julien Delecolle, Dimitri Heintz, E Garo, M Hamburger, Cyril Auger, Claire Lugnier, H J Kim, M H Oak, Valerie Schini-Kerth
Phytomedicine, 2016, 23, pp.793-799
Article dans une revueA Predictive Score for Bronchopleural Fistula Established Using the French Database Epithor
Arnaud Pforr, Pierre-Benoit Pages, Jean-Marc Baste, Pascal Thomas, Pierre-Emmanuel Falcoz, Francoise Le Pimpec Barthes, Marcel Dahan, Alain Bernard
Annals of Thoracic Surgery, 2016, 101 (1), pp.287-293. ⟨10.1016/j.athoracsur.2015.06.026⟩
Article dans une revueAbstractBackground. Bronchopleural fistula (BPF) remains a rare but fatal complication of thoracic surgery. The aim of this study was to develop and validate a predictive model of BPF after pulmonary resection and to identify patients at high risk for BPF. Methods. From January 2005 to December 2012, 34,000 patients underwent major pulmonary resection (lobectomy, bilobectomy, or pneumonectomy) and were entered into the French National database Epithor. The primary outcome was the occurrence of postoperative BPF at 30 days. The logistic regression model was built using a backward stepwise variable selection. Results. Bronchopleural fistula occurred in 318 patients (0.94%); its prevalence was 0.5% for lobectomy (n = 139), 2.2% for bilobectomy (n = 39), and 3% for pneumonectomy (n = 140). The mortality rate was 25.9% for lobectomy (n = 36), 16.7% for bilobectomy (n = 6), and 20% for pneumonectomy (n = 28). In the final model, nine variables were selected: sex, body mass index, dyspnea score, number of comorbidities per patient, bilobectomy, pneumonectomy, emergency surgery, sleeve resection, and the side of the resection. In the development data set, the C-index was 0.8 (95% confidence interval: 0.78 to 0.82). This model was well calibrated because the Hosmer-Lemeshow test was not significant (chi(2) = 10.5, p = 0.23). We then calculated the logistic regression coefficient to build the predictive score for BPF. Conclusions. This strong model could be easily used by surgeons to identify patient at high risk for BPF. This score needs to be confirmed prospectively in an independent cohort. (C) 2016 by The Society of Thoracic Surgeons
Cancer and Takotsubo Syndrome: a Need to Explore a Very Complex Association - Reply
Olivier Morel, Nathan Messas, Alessio Imperiale, Cyrille Blondet, Laurence Jesel
Circulation Journal, 2016, 81 (1), pp.124. ⟨10.1253/circj.CJ-16-1195⟩
Article dans une revueSleep characteristics in type 1 diabetes and associations with glycemic control: systematic review and meta-analysis
Sirimon Reutrakul, Ammarin Thakkinstian, Thunyarat Anothaisintawee, Sasipas Chontong, Anne-Laure Borel, Michelle M. Perfect, Carolina Castro Porto Silva Janovsky, Romain Kessler, Bernd Schultes, Igor Alexander Harsch, Marieke van Dijk, Didier Bouhassira, Bartlomiej Matejko, Rebecca B. Lipton, Parawee Suwannalai, Naricha Chirakalwasan, Anne-Katrin Schober, Kristen L. Knutson
Sleep Medicine, 2016, 23, pp.26-45. ⟨10.1016/j.sleep.2016.03.019⟩
Article dans une revueAbstractOBJECTIVES: The association between inadequate sleep and type 2 diabetes has garnered much attention, but little is known about sleep and type 1 diabetes (T1D). Our objectives were to conduct a systematic review and meta-analysis comparing sleep in persons with and without T1D, and to explore relationships between sleep and glycemic control in T1D. METHODS: Studies were identified from Medline and Scopus. Studies reporting measures of sleep in T1D patients and controls, and/or associations between sleep and glycemic control, were selected. RESULTS: A total of 22 studies were eligible for the meta-analysis. Children with T1D had shorter sleep duration (mean difference [MD] = -26.4 minutes; 95% confidence interval [CI] = -35.4, -17.7) than controls. Adults with T1D reported poorer sleep quality (MD in standardized sleep quality score = 0.51; 95% CI = 0.33, 0.70), with higher scores reflecting worse sleep quality) than controls, but there was no difference in self-reported sleep duration. Adults with TID who reported sleeping >6 hours had lower hemoglobin A1c (HbA1c) levels than those sleeping ≤6 hours (MD = -0.24%; 95% CI = -0.47, -0.02), and participants reporting good sleep quality had lower HbA1c than those with poor sleep quality (MD = -0.19%; 95% CI = -0.30, -0.08). The estimated prevalence of obstructive sleep apnea (OSA) in adults with TID was 51.9% (95% CI = 31.2, 72.6). Patients with moderate-to-severe OSA had a trend toward higher HbA1c (MD = 0.39%, 95% CI = -0.08, 0.87). CONCLUSION: T1D was associated with poorer sleep and high prevalence of OSA. Poor sleep quality, shorter sleep duration, and OSA were associated with suboptimal glycemic control in T1D patients.
Skin Mottling as a Clinical Expression of Microcirculatory Dysfunction in Septic Shock
Pierrick Le Borgne, Claire Kam, Pascal Bilbault
Annales françaises de médecine d'urgence, 2016, 6 (3), pp.212-213. ⟨10.1007/s13341-016-0637-9⟩
Article dans une revueThe Role of Tumor Necrosis Factor Alpha and TNF Superfamily Members in Bone Damage in Patients with End-Stage Chronic Obstructive Lung Disease Prior to Lung Transplantation
Evgenia A. Kochetkova, Vera A. Nevzorova, Ludmila G. Ugai, Yulia V. Maistrovskaia, Gilbert Massard
Calcif Tissue Int, 2016, 99 (6), pp.578-587. ⟨10.1007/s00223-016-0185-8⟩
Article dans une revueAbstractA disequilibrium of tumor necrosis superfamily (TNF) members, including the serum osteoprotegerin, soluble receptor activator of nuclear factor-κB ligand, soluble TNF-related apoptosis-inducing ligand and TNF-α, was associated with the occurrence of a reduced skeletal mass and osteoporosis in male patients with end-stage chronic obstructive pulmonary disease (COPD). The purpose of this study was to explore the associations between serum biomarkers of tumor necrosis factor (TNF) superfamily and body and bone compositions in end-stage COPD males. Pulmonary function, T-score at the lumbar spine and femoral neck, lean mass, serum osteoprotegerin (OPG), soluble receptor activator of nuclear factor-κB ligand (sRANKL), TNF-α and its receptors (sTNFR-I, sTNFR-II) and soluble TNF-related apoptosis-inducing ligand (sTRAIL) levels were evaluated in 48 male patients with end-stage COPD and 36 healthy male volunteers. OPG was lower in male COPD patients than in control subjects, whereas sRANKL, TNF-α and its receptors were higher. The serum sTRAIL level showed a tendency to increase compared with that of healthy subjects (P = 0.062). Serum OPG showed a positive correlation with bone density. In contrast, serum TNF-α, sRANKL and sTRAIL were inversely associated with pretransplant bone density. We have noted the appearance of statistically significant inverse relationships between lean mass values and TNF-α, sTNFR-I and II and sRANKL levels in male COPD patients. Moreover, there was a negative correlation between sTRAIL levels with airway obstruction (P = 0.005) and hypercapnia (P = 0.042) in advanced COPD patients. Through a multiple linear regression analysis, our study revealed that a disequilibrium of TNF family members was strongly associated with the occurrence of a reduced skeletal mass and osteoporosis. These results provide further evidence that abnormal levels of TNF superfamily molecules may cause not only a decrease in BMD, but also lower muscle mass in end-stage COPD.
An international randomized study of a home-based self-management program for severe COPD: the COMET
Jean Bourbeau, Pere Casan, Silvia Tognella, Peter Haidl, Joëlle B. Texereau, Romain Kessler
International Journal of Chronic Obstructive Pulmonary Disease, 2016, 11, pp.1447-1451. ⟨10.2147/COPD.S107151⟩
Article dans une revueAbstractINTRODUCTION: Most hospitalizations and costs related to COPD are due to exacerbations and insufficient disease management. The COPD patient Management European Trial (COMET) is investigating a home-based multicomponent COPD self-management program designed to reduce exacerbations and hospital admissions. DESIGN: Multicenter parallel randomized controlled, open-label superiority trial. SETTING: Thirty-three hospitals in four European countries. PARTICIPANTS: A total of 345 patients with Global initiative for chronic Obstructive Lung Disease III/IV COPD. INTERVENTION: The program includes extensive patient coaching by health care professionals to improve self-management (eg, develop skills to better manage their disease), an e-health platform for reporting frequent health status updates, rapid intervention when necessary, and oxygen therapy monitoring. Comparator is the usual management as per the center's routine practice. MAIN OUTCOME MEASURES: Yearly number of hospital days for acute care, exacerbation number, quality of life, deaths, and costs.
Surgical management of spontaneous pneumothorax: are there any prognostic factors influencing postoperative complications?
Jean-Philippe Delpy, Pierre-Benoit Pages, Pierre Mordant, Pierre-Emmanuel Falcoz, Pascal Thomas, Françoise Le Pimpec-Barthes, Marcel Dahan, Alain Bernard
European Journal of Cardio-Thoracic Surgery, 2016, 49 (3), pp.862-867. ⟨10.1093/ejcts/ezv195⟩
Article dans une revueAbstractThere are no guidelines regarding the surgical approach for spontaneous pneumothorax. It has been reported, however, that the risk of recurrence following video-assisted thoracic surgery is higher than that following open thoracotomy (OT). The objective of this study was to determine whether this higher risk of recurrence following video-assisted thoracic surgery could be attributable to differences in intraoperative parenchymal resection and the pleurodesis technique. Data for 7647 patients operated on for primary or secondary spontaneous pneumothorax between 1 January 2005 and 31 December 2012 were extracted from EpithorA (R), the French national database. The type of pleurodesis and parenchymal resection was collected. Outcomes were (i) bleeding, defined as postoperative pleural bleeding; (ii) pulmonary and pleural complications, defined as atelectasis, pneumonia, empyema, prolonged ventilation, acute respiratory distress syndrome and prolonged air leaks; (iii) in-hospital length of stay and (iv) recurrence, defined as chest drainage or surgery for a second pneumothorax. Of note, 6643 patients underwent videothoracoscopy and 1004 patients underwent OT. When compared with the thoracotomy group, the videothoracoscopy group was associated with more parenchymal resections (62.4 vs 80%, P = 0.01), fewer mechanical pleurodesis procedures (93 vs 77.5%, P < 10(-3)), fewer postoperative respiratory complications (12 vs 8.2%, P = 0.01), fewer cases of postoperative pleural bleeding (2.3 vs 1.4%, P = 0.04) and shorter hospital lengths of stay (16 vs 9 days, P = 0.01). The recurrence rate was 1.8% (n = 18) in the thoracotomy group versus 3.8% (n = 254) in the videothoracoscopy group (P = 0.01). The median time between surgery and recurrence was 3 months (range: 1-76 months). In the surgical management of spontaneous pneumothorax, videothoracoscopy is associated with a higher rate of recurrence than OT. This difference might be attributable to differences in the pleurodesis technique rather than differences in the parenchymal resection.
Pulmonary Arterial Hypertension-Specific Drug Therapy in COPD Patients with Severe Pulmonary Hypertension and Mild-to-Moderate Airflow Limitation
George Calcaianu, Matthieu Canuet, Armelle Schuller, Irina Enache, Ari Chaouat, Romain Kessler
Respiration, 2016, 91 (1), pp.9-17. ⟨10.1159/000441304⟩
Article dans une revueAbstractBACKGROUND: Patients with severe pulmonary hypertension (PH) associated with chronic obstructive pulmonary disease (COPD) present a poor outcome. Specific PH treatment could improve the clinical and hemodynamic status of these patients but may worsen arterial blood gases. OBJECTIVES: Our study retrospectively included 28 patients with severe precapillary PH (mean pulmonary arterial pressure >35 mm Hg) associated with mild-to-moderate COPD [forced expiratory volume in 1 s (FEV1) >50% predicted]. All patients underwent specific pulmonary arterial hypertension (PAH) treatment as mono-, bi- or triple therapy. METHODS: Our single-center study was conducted based on retrospective data of 537 right heart catheterizations (RHCs) performed on patients with COPD from January 2004 to June 2014. An echocardiography, comprehensive blood tests, pulmonary function tests, and a high-resolution computed tomography were performed before the RHCs. All patients underwent RHC with a Swan-Ganz catheter. RESULTS: Compared to baseline, patients treated with specific PAH drugs showed a significant increase in cardiac index at long term (2.5 +/- 0.7 liters/min/m2 at baseline vs. 3.2 +/- 0.6 liters/min/m2 at 6/12 months; p = 0.003) as well as a decrease in pulmonary vascular resistance in the long term (8.4 +/- 4.2 Wood units at baseline vs. 5 +/- 1.7 Wood units at 6/12 months; p = 0.008). There was a slight decrease in arterial oxygen tension (PaO2) after 3 months of treatment (-2.4 +/- 7.21 mm Hg; p = 0.066). During a median follow-up of 3 years, 12 patients (42.8%) died (including all causes of death). CONCLUSIONS: This preliminary report suggests that the use of specific PH therapy in severe PH associated with mild-to-moderate COPD can improve pulmonary hemodynamic parameters, with worsening of PaO2, which had no clinical significance and did not lead to specific PAH therapy withdrawal in any patient.
Contamination of dental unit waterlines: assessment of three continuous water disinfection systems
Damien Offner, Florence Fioretti, Anne-Marie Musset
BDJ Open, 2016, 2, ⟨10.1038/bdjopen.2016.7⟩
Article dans une revueAbstractObjectives: To assess the efficacy of three continuous water disinfection systems for dental units under real conditions of dental care. Design and settings: A prospective study carried out from 45 days to 20 months on the water microbial quality of the dental units is benefited from three different systems: two chemical treatment systems (IGN EVO/Calbenium/IGN Cartridge and Sterispray) and one physical treatment system (BacTerminator). Studied items were six dental units of the Dental Medicine and Oral Surgery Center within the University Hospital of Strasbourg (HUS), France. Results and disucussion: The IGN EVO/Calbenium/IGN Cartridge and Sterispray systems showed an immediate and long-term efficacy on contaminated dental unit waterlines. However, the first system offers ergonomic advantages (automatic system, action on the water from the water supply network). The BacTerminator system took longer to be effective and was less effective than the other two.
Advanced nanostructured medical device combining mesenchymal cells and VEGF nanoparticles for enhanced engineered tissue vascularization
Quentin Wagner, Damien Offner, Ysia Idoux-Gillet, Imran Saleem, Satyanarayana Somavarapu, Pascale Schwinte, Nadia Benkirane-Jessel, Laetitia Keller
Nanomedicine, 2016, 11 (18), pp.2419-2430. ⟨10.2217/nnm-2016-0189⟩
Article dans une revueAbstractAim: Success of functional vascularized tissue repair depends on vascular support system supply and still remains challenging. Our objective was to develop a nanoactive implant enhancing endothelial cell activity, particularly for bone tissue engineering in the regenerative medicine field. Materials & methods: We developed a new strategy of tridimensional implant based on cell-dependent sustained release of VEGF nanoparticles. These nanoparticles were homogeneously distributed within nanoreservoirs onto the porous scaffold, with quicker reorganization of endothelial cells. Moreover, the activity of this active smart implant on cells was also modulated by addition of osteoblastic cells. Results & conclusion: This sophisticated active strategy should potentiate efficiency of current therapeutic implants for bone repair, avoiding the need for bone substitutes.
Adverse event potentially due to an interaction between ibrutinib and verapamil: a case report
Emmanuelle Lambert Kuhn, Dominique Leveque, Bruno Lioure, Bénédicte Gourieux, Pascal Bilbault
Journal of Clinical Pharmacy and Therapeutics, 2016, 41 (1), pp.104-105. ⟨10.1111/jcpt.12355⟩
Article dans une revueAbstractWHAT IS KNOWN AND OBJECTIVE: Ibrutinib is a recently approved oral anticancer agent with pharmacokinetics that is very sensitive to metabolic inhibition. We report a serious side effect of ibrutinib potentially attributable to interaction with the moderate CYP3A4 inhibitor verapamil. CASE DESCRIPTION: A patient with mantle cell lymphoma was admitted to our emergency department with severe diarrhoea. During a prescription review, the clinical pharmacist identified a potential drug interaction between ibrutinib and verapamil present in a branded combination product also containing trandolapril. Ibrutinib was discontinued for 5 days, and verapamil was stopped. Lercanidipine 10 mg daily was prescribed as an alternative antihypertensive drug. The patient was discharged after 3 days with symptomatic treatment for his diarrhoea. Three months later, the patient maintained control with ibrutinib and olmesartan, but without verapamil. WHAT IS NEW AND CONCLUSION: This is the first description of a serious side effect of ibrutinib likely due to an interaction with the CYP3A4 inhibitor verapamil. Prescriptions of ibrutinib must be carefully checked to identify possible interactions with CYP3A4 inhibitors and patients monitored accordingly.
Impact of Malignancies in the Early and Late Time Course of Takotsubo Cardiomyopathy
Mélanie Girardey, Laurence Jesel, Umberto Campia, Nathan Messas, Sebastien Hess, Alessio Imperiale, Cyrille Blondet, Annie Trinh, Patrick Ohlmann, Olivier Morel
Circulation Journal, 2016, 80 (10), pp.2192-2198. ⟨10.1253/circj.CJ-16-0388⟩
Article dans une revueUne cause rare de cervicalgies [= An unusual cause of cervical pain]
Pierrick Le Borgne, Philippe Kauffmann, Sébastien Couraud, Claudia Brunhuber, Pascal Bilbault
La Revue de Médecine Interne, 2016, 37 (2), pp.142-143. ⟨10.1016/j.revmed.2015.05.005⟩
Article dans une revueBenign vs. malignant inferolateral early repolarization: Focus on the T wave
Laurent Roten, Nicolas Derval, Philippe Maury, Saagar Mahida, Patrizio Pascale, Antoine Leenhardt, Laurence Jesel, Isabel Deisenhofer, Josef Kautzner, Vincent Probst, Anne Rollin, Jean-Bernard Ruidavets, Jean Ferrières, Frédéric Sacher, Dik Heg, Daniel Scherr, Yuki Komatsu, Matthew Daly, Arnaud Denis, Ashok Shah, Mélèze Hocini, Pierre Jaïs, Michel Haïssaguerre
Heart Rhythm, 2016, 13 (4), pp.894-902. ⟨10.1016/j.hrthm.2015.11.020⟩
Article dans une revueAbstractBACKGROUND: Inferolateral early repolarization (ER) is highly prevalent and is associated with idiopathic ventricular fibrillation (VF). OBJECTIVE: The purpose of this study was to evaluate the potential role of T-wave parameters to differentiate between malignant and benign ER. METHODS: We compared the ECGs of patients with ER and VF (n = 92) with control subjects with asymptomatic ER (n = 247). We assessed J-wave amplitude, QTc interval, T-wave/R-wave (T/R) ratio in leads II and V5, and presence of low-amplitude T waves (T-wave amplitude <0.1 mV and <10% of R-wave amplitude in lead I, II, or V4-V6). RESULTS: Compared to controls, the VF group had longer QTc intervals (388 ms vs. 377 ms, P = .001), higher J-wave amplitudes (0.23 mV vs. 0.17 mV, P <.001), higher prevalence of low-amplitude T waves (29% vs. 3%, P <.001), and lower T/R ratio (0.18 vs. 0.30, P <.001). Logistic regression analysis demonstrated that QTc interval (odds ratio [OR] per 10 ms: 1.15, 95% confidence interval [CI} 1.02-1.30), maximal J-wave amplitude (OR per 0.1 mV: 1.68, 95% CI 1.23-2.31), lower T/R ratio (OR per 0.1 unit: 0.62, 95% CI 0.47-0.81), presence of low-amplitude T waves (OR 3.53, 95% CI 1.26-9.88). and presence of J waves in the inferior leads (OR 2.58, 95% CI 1.18-5.65) were associated with malignant ER. CONCLUSION: Patients with malignant ER have a higher prevalence of low-amplitude T waves, lower T/R ratio (lead II or V5), and longer QTc interval. The combination of these parameters with J-wave amplitude and distribution of J waves may allow for improved identification of malignant ER.
Epidermal growth factor receptor and v-Ki-ras2 Kirsten rat sarcoma viral oncogen homologue-specific amino acid substitutions are associated with different histopathological prognostic factors in resected non-small-cell lung cancer
Joseph Seitlinger, Stéphane Renaud, Pierre-Emmanuel Falcoz, Mickaël Schaeffer, Anne Olland, Jérémie Reeb, Nicola Santelmo, Michèle Legrain, Anne-Claire Voegeli, Noëlle Weingertner, Marie-Pierre Chenard, Michèle Beau-Faller, Gilbert Massard
Interactive Cardiovascular and Thoracic Surgery, 2016, 23 (6), pp.902-907. ⟨10.1093/icvts/ivw250⟩
Article dans une revueAbstractOBJECTIVES: Epidermal growth factor receptor (mEGFR) and v-Ki-ras2 Kirsten rat sarcoma viral oncogen homologue (mKRAS) mutations are the two main oncogenic drivers in resected non-small-cell lung cancer (NSCLC). We aimed to evaluate the correlation between histopathological prognostic factors and these mutations in resected NSCLC. METHODS: We retrospectively reviewed data from 841 patients who underwent a surgical resection with a curative intent for NSCLC between 2007 and 2012. RESULTS: KRAS mutations were observed in 255 patients (32%) and mEGFR in 103 patients (12%). A correlation was observed between mKRAS patients and lymph node involvement [Cramer's V: 0.451, P < 0.001, OR: 7.5 (95% CI: 5.3-10.7), P < 0.001]. Otherwise, a correlation was observed between mKRAS and the risk of harbouring 2 N2 stations [Cramer's V: 0.235, P = 0.02, OR: 3.04 (95% CI: 1.5-6.3), P = 0.004]. High lymph node ratio and angioinvasion were also significantly more frequent in mKRAS [Cramer's V: 0.373, P < 0.001, OR: 6.37 (95% CI: 3.9-10.5), P < 0.001; and Cramer's V: 0.269, P < 0.001, OR: 3.25 (95% CI: 2.4-4.4), P < 0.001, respectively]. Skip N2 and microscopic N2 were significantly more frequent in mEGFR [Cramer's V: 0.459, P < 0.001, OR: 18 (95% CI: 5.6-57.8), P < 0.001; and (Cramer's V: 0.45, P < 0.001 OR: 21.14 (95% CI: 9.2-48.3), P < 0.001, respectively]. CONCLUSIONS: We observed a correlation between mKRAS and negative histopathological prognostic factors and between mEGFR and positive prognostic factors. One can wonder whether histopathological prognostic factors are only clinical reflections of molecular alterations.
Evaluation of 5-year-old children with complete cleft lip and palate: Multicenter study. Part 2: Functional results
Caroline Dissaux, Bruno Grollemund, Frederic Bodin, Arnaud Picard, Marie-Paule Vazquez, Béatrice Morand, Isabelle James, Isabelle Kauffmann, Catherine Bruant-Rodier
Journal of cranio-maxillo-facial surgery official publication of the European Association for Cranio-Maxillo-Facial Surgery, 2016, 44 (2), pp.94-103. ⟨10.1016/j.jcms.2015.08.029⟩
Article dans une revueAbstractBACKGROUND AND PURPOSE: Cleft surgery is marked by all the controversies and the multiplication of protocols, as it has been shown by the Eurocleft study. The objective of this pilot study is to start a comparison and analyzing procedure between primary surgical protocols in French centers. METHODS: Four French centers with different primary surgical protocols for cleft lip and palate repair, have accepted to be involved in this retrospective study. In each center, 20 consecutive patients with complete cleft lip and palate (10 UCLP, 10 BCLP per center), non syndromic, have been evaluated at a mean age of 5 [range, 4-6]. In this second part, maxillary growth and palatine morphology were assessed on clinical examination and on dental casts (Goslon score). Speech was also evaluated clinically (Borel-maisonny classification) and by Aerophonoscope. RESULTS: Veau-Wardill-Killner palatoplasty involves a higher rate of transversal maxillary deficiency and retromaxillary. The fistula rate is statistically lower with tibial periosteum graft hard palate closure but this technique seems to give retromaxillary. Malek and Talmant two-stage-palatoplasty techniques reach Goslon scores of 1 or 2. Considering speech, Sommerlad intravelar veloplasty got higher outcomes. CONCLUSIONS: Primary results. Extension to other centers required. The two-stage palatoplasty, including a Sommerlad intravelar veloplasty seems to have the less negative impact on maxillary growth, and to give good speech outcomes. LEVEL OF EVIDENCE: Therapeutic study. Level III/retrospective multicenter comparative study.
The crude leaves extract of adansonia digitata causes redox-sensitive endothelium-dependent relaxation involving no and EDHF in porcine coronary artery
Mbaye Sene, Modou Oumy Kane, Philipe Chabert, Chabert Auger, Catherine Vonthron-Senecheau, Firmin Sylva Barboza, Abdou Khadir Sow, Aminata Sall Diallo, Valerie Schini-Kerth
Acta Physiologica, 2016, 217, pp.39-40
Article dans une revueA UV-Raman spectrometry method for quality control of anticancer preparations: Results after 18 months of implementation in hospital pharmacy
Flore Nardella, Morgane Beck, Pierre Collart-Dutilleul, Guillaume Becker, Coralie Boulanger, Laurent Perello, Alexis Gairard-Dory, Bénédicte Gourieux, Geneviève Ubeaud-Sequier
International Journal of Pharmaceutics, 2016, 499 (1-2), pp.343-350. ⟨10.1016/j.ijpharm.2016.01.002⟩
Article dans une revueAbstractIn France, chemotherapy preparation units of hospital pharmacy compound cytotoxic infusion bags adapted to each patient. The narrow therapeutic index of these preparations led us to implement qualitative and quantitative control for patients' safety. To this aim, we calibrated an equipment combining UV-vis spectrometry and Raman spectroscopy (QC Prep+) and monitored 14 different molecule-solvent combinations over a 18 months period. This rapid and specific method allowed the qualitative and quantitative analysis of 1 mL sample tests in less than 2 min. On 5742 anticancer preparations, we obtained accepted results with more than 99.4% solvent identification, 99.6% drug identification and only 1.52% of preparations not matching quantitative specifications (+/-15% of theoretical concentration). This quantitative control enabled us to pinpoint some critical points of production for two of the most common preparations. We thus updated the procedures of reconstitution and preparation, increasing the quality of final product. UV-Raman spectrometry is thus an effective tool to control chemotherapy infusions and to improve good practices of preparation.
EPA:DHA 6:1 is a Superior Omega 3 Formulation to Prevent the Platelets-Induced 5-HT-Mediated Contractile Responses in the Isolated Porcine Coronary Artery and Human Internal Mammary Artery via an Increased Endothelial NO Formation
Valerie Schini-Kerth, Faraj Zgheel, Cyril Auger, Stephanie Perrier, Hm Tam, Arnaud Mommerot, Jp Philippe, Olivier Morel
Journal of Vascular Research, 2016, 53, pp.6-6
Article dans une revueOrodental status before radiation therapy of the head and neck area: A prospective analysis on 48 patients
Mélanie Rouers, Sarah Dubourg, Fabien Bornert, Pierre Truntzer, Delphine Antoni, J Couchot, Valérie Ganansia, Cyrielle Bourrier, Sébastien Guihard, Georges Noel
Cancer/Radiothérapie, 2016, 20 (3), pp.199-204. ⟨10.1016/j.canrad.2015.12.008⟩
Article dans une revueAbstractPurpose.-The treatment by irradiation of tumours of the upper head and neck tract cause many complications on the oral sphere, such as mucositis, dysphagia, asialia and tooth decay. Associated manifestations are frequent and their severity has been poorly studied. However, the patient's quality of life is directly correlated with their oral health. Patients and methods. - We carried out an evaluation of the oral health of 48 patients with an upper head and neck tract cancer treated by irradiation at the Paul-Strauss Centre in Strasbourg. The inclusion criteria of this study concerned the localization of the tumour in the upper head and neck tract and a treatment by irradiation associated or not to chemotherapy. Results. - The patients of the study were concerned by alcohol and smoking intoxication, on average, 22.2 pack-year and 2.2 glasses of alcohol per day. They received an irradiation of 60.9 Gy on average. Their oral health was characterized by a DMFT (decayed, missing, filled teeth) index of 16.1, with, in mean, eight missing teeth and eight filling teeth and, by the presence of dental plaque in 70% of cases. Along the treatment by irradiation, the oral complications evaluation showed that on average, patients developed mucositis 18 days after the beginning of radiotherapy, xerostomia after 20 days, and dysphagia after 17 days. At the end of the treatment, we noted an oral hygiene improvement, with teeth brushing more frequent (two to three per day), mouthwash use, and daily fluoride prophylaxis. Conclusion. - This study provides insights of the dental status of patients irradiated in the oral cavity. This series lays the groundwork for the study of prosthesis requirement and dosimetry calculation. (C) 2016 Societe francaise de radiotherapie oncologique (SFRO). Published by Elsevier Masson SAS. All rights reserved.
L’implantologie dans les cas de dysplasie ectodermique [= Implantology in cases of ectodermal dysplasia]
François Clauss, Frédéric Obry, Sophie Jung, Jean-Christophe Dahlet, Etienne Waltmann, Agnès Bloch-Zupan, V. Vogt, Marie Cecile Maniere
Revue d'odonto-stomatologie, 2016, 45 (3), pp.220-233
Article dans une revueAbstractLes thérapeutiques implantaires précoces des patients atteints de dysplasie ectodermique présentent des spécificités chirurgicales, anatomiques et physiologiques en rapport avec le phénotype osseux et la croissance. Le degré de maturité squelettique et psychique, le phénotype dentaire et les antécédents prothétiques sont des éléments diagnostiques essentiels. L'imagerie sectionnelle CBCT pré-opératoire est essentielle dans ce contexte et permet une évaluation qualitative et mensurative du support osseux symphysaire. En fonction des observations cliniques et tomographiques, le praticien s'orientera vers la mise en place d'implants standards de faible dimension ou de mini-implants, dans les cas d'anodontie ou d'hypotrophie osseuse très marquée. La différence de taille entre ces deux approches est la nécessité de dépose des miniimplants à la fin de la croissance et leur remplacement par des implants ostéointégrés standards. Des études multi-centriques, un recul clinique et radiologique plus important sont nécessaires pour mieux étudier le comportement de ces mini-implants à long terme. Un suivi rigoureux de l'ostéointégration et un renouvellement prothétique régulier de la prothèse adjointe supra-implantaire, en fonction du rythme de croissance des bases osseuses, sont nécessaires.
Five-Year Metabolic, Functional, and Safety Results of Patients With Type 1 Diabetes Transplanted With Allogenic Islets Within the Swiss-French GRAGIL Network
S. Lablanche, S. Borot, Anne Wojtusciszyn, F. Bayle, R. Tetaz, L. Badet, Charles Thivolet, E. Morelon, L. Frimat, A. Penfornis, Laurence Kessler, C. Brault, C. Colin, I. Tauveron, D. Bosco, T. Berney, P. Y. Benhamou, Gragil Network
Diabetes Care, 2015, 38 (9), pp.1714-22. ⟨10.2337/dc15-0094⟩
Article dans une revueAbstractOBJECTIVE: To describe the 5-year outcomes of islet transplantation within the Swiss-French GRAGIL Network. RESEARCH DESIGN AND METHODS: Retrospective analysis of all subjects enrolled in the GRAGIL-1c and GRAGIL-2 islet transplantation trials. Parameters related to metabolic control, graft function, and safety outcomes were studied. RESULTS: Forty-four patients received islet transplantation (islet transplantation alone [ITA] 24 patients [54.5%], islet after kidney [IAK] transplantation 20 patients [45.5%]) between September 2003 and April 2010. Recipients received a total islet mass of 9,715.75 +/- 3,444.40 IEQ/kg. Thirty-four patients completed a 5-year follow-up, and 10 patients completed a 4-year follow-up. At 1, 4, and 5 years after islet transplantation, respectively, 83%, 67%, and 58% of the ITA recipients and 80%, 70%, and 60% of the IAK transplant recipients reached HbA1c under 7% (53 mmol/mol) and were free of severe hypoglycemia, while none of the ITA recipients and only 10% of the IAK transplant recipients met this composite criterion at the preinfusion stage. Thirty-three of 44 patients (75%) experienced insulin independence during the entire follow-up period, with a median duration of insulin independence of 19.25 months (interquartile range 2-58). Twenty-nine of 44 recipients (66%) exhibited at least one adverse event; 18 of 55 adverse events (33%) were possibly related to immunosuppression; and complications related to the islet infusion (n = 84) occurred in 10 recipients (11.9%). CONCLUSIONS: In a large cohort with a 5-year follow-up and in a multicenter network setting, islet transplantation was safe and efficient in restoring good and lasting glycemic control and preventing severe hypoglycemia in patients with type 1 diabetes.
Development of decellularized scaffolds for stem cell-driven tissue engineering
Deepti Rana, Hala Zreiqat, Nadia Benkirane-Jessel, Seeram Ramakrishna, Murugan Ramalingam
Journal of Tissue Engineering and Regenerative Medicine, 2015, 11 (4), pp.942-965. ⟨10.1002/term.2061⟩
Article dans une revueAbstractOrgan transplantation is an effective treatment for chronic organ dysfunctioning conditions. However, a dearth of available donor organs for transplantation leads to the death of numerous patients waiting for a suitable organ donor. The potential of decellularized scaffolds, derived from native tissues or organs in the form of scaffolds has been evolved as a promising approach in tissue-regenerative medicine for translating functional organ replacements. In recent years, donor organs, such as heart, liver, lung and kidneys, have been reported to provide acellular extracellular matrix (ECM)-based scaffolds through the process called decellularization' and proved to show the potential of recellularization with selected cell populations, particularly with stem cells. In fact, decellularized stem cell matrix (DSCM) has also emerged as a potent biological scaffold for controlling stem cell fate and function during tissue organization. Despite the proven potential of decellularized scaffolds in tissue engineering, the molecular mechanism responsible for stem cell interactions with decellularized scaffolds is still unclear. Stem cells interact with, and respond to, various signals/cues emanating from their ECM. The ability to harness the regenerative potential of stem cells via decellularized ECM-based scaffolds has promising implications for tissue-regenerative medicine. Keeping these points in view, this article reviews the current status of decellularized scaffolds for stem cells, with particular focus on: (a) concept and various methods of decellularization; (b) interaction of stem cells with decellularized scaffolds; (c) current recellularization strategies, with associated challenges; and (iv) applications of the decellularized scaffolds in stem cell-driven tissue engineering and regenerative medicine. Copyright (c) 2015 John Wiley & Sons, Ltd.
Effects of β2 agonists on post-thoracotomy pain incidence
Éric Salvat, B Schweitzer, Gilbert Massard, Nicolas Meyer, Frederic de Blay de Gaix, Andre Muller, Michel Barrot
European Journal of Pain, 2015, 19 (10), pp.1428-1436. ⟨10.1002/ejp.673⟩
Article dans une revueAbstractBACKGROUND: Pre-clinical research has shown beta2 -adrenoceptors to be essential for the antiallodynic action of antidepressant drugs in murine models of neuropathic pain and that sustained treatment with beta2 -agonists has an antiallodynic action. Here, we clinically investigated whether chronic beta2 -agonist treatments may influence the incidence of post-thoracotomy chronic pain, defined as pain that recurs or persists along a thoracotomy scar more than 2 months after surgery, either neuropathic or non-neuropathic. METHODS: We conducted an epidemiological study on patients operated by thoracotomy. Demographic data, medical history and treatments concomitant to the surgery were recorded at a follow-up visit. Information on perioperative treatments was collected from the anaesthesia records and confirmed by the patients. In patients with pain at the surgery level, post-thoracotomy chronic pain was assessed by clinical examination and numeric scale. Physical examination and DN4 questionnaire were used to discriminate neuropathic and non-neuropathic chronic pain at scar level. RESULTS: One hundred and eighty-nine patients were included. Eighty-one patients reported persisting thoracic pain, with neuropathic characteristics in 58 of them (30% of the 189 patients). The most common chronic drugs during the perioperative period were inhaled beta2 -agonists (28.6%). The chronic use of beta2 -agonists was an independent predictor of thoracic neuropathic pain (but not of non-neuropathic pain) and was associated with a five-fold decrease in the relative incidence of neuropathic pain [OR = 0.19 (0.06-0.45)]. CONCLUSIONS: These data suggest a possible influence of chronic beta2 -agonist treatments on neuropathic pain secondary to thoracotomy. This apparent preventive effect of beta2 -agonist treatments should warrant controlled clinical trials.
A living thick nanofibrous implant bifunctionalized with active growth factor and stem cells for bone regeneration
Laetitia Keller, Sandy Eap, Jessica Schiavi, Olivier Huck, Leandro Jacomine, Florence Fioretti, Christian Gauthier, Victor Sebastian, Pascale Schwinté, Nadia Benkirane-Jessel
International Journal of Nanomedicine, 2015, pp.1061. ⟨10.2147/IJN.S72670⟩
Article dans une revueEvaluation of 5-year-old children with complete cleft lip and palate: Multicenter study. Part 1: Lip and nose aesthetic results
Caroline Dissaux, Frederic Bodin, Bruno Grollemund, Arnaud Picard, Marie-Paule Vazquez, Béatrice Morand, Isabelle James, Isabelle Kauffmann, Catherine Bruant-Rodier
Journal of cranio-maxillo-facial surgery official publication of the European Association for Cranio-Maxillo-Facial Surgery, 2015, 43 (10), pp.2085-2092. ⟨10.1016/j.jcms.2015.08.020⟩
Article dans une revueAbstractBACKGROUND AND PURPOSE: Cleft surgery is marked by all the controversies and the multiplication of protocols, as it has been shown by the Eurocleft study. The objective of this pilot study is to start a comparison and analyzing procedure between primary surgical protocols in French centers. METHODS: Four French centers with different primary surgical protocols for cleft lip and palate repair, have accepted to be involved in this retrospective study. In each center, 20 consecutive patients with complete cleft lip and palate (10 UCLP and 10 BCLP per center), non syndromic, have been evaluated at a mean age of 5 [4,6]. In this first part, the aesthetic results of nose and lip repair were assessed based on the scale established by Mortier et al. (1997). RESULTS: Considering nose outcome, primary cleft repair surgery including a nasal dissection gives a statistically significant benefit in terms of septum deviation. Considering lip result, muscular dehiscence rate is significantly higher in BCLP patients with a two-stage lip closure. The centers using Millard one-stage lip closure do not have uniform results. For UCLP patients, the quality of scar is not statistically different between Skoog and Millard techniques. CONCLUSIONS: Primary results based on a simple, reproducible evaluation protocol. Extension to other centers required. LEVEL OF EVIDENCE: Therapeutic study. Level III/retrospective multicenter comparative study.
Acute myocarditis diagnosed by layer-specific 2D longitudinal speckle tracking analysis
Thibault Caspar, Philippe Germain, Soraya El Ghannudi, Olivier Morel, Hafida Samet, Annie Trinh, Helene Petit Eisenmann, Samy Talha, Marie Fichot, Laurence Jesel, Patrick Ohlmann
Echocardiography, 2015, 33, pp.157-158
Article dans une revueTheoretical study of actin layers attachment and separation.
Sophie Marbach, Amélie Luise Godeau, Daniel Riveline, J.-F. Joanny, Jacques Prost
European Physical Journal E: Soft matter and biological physics, 2015, 38 (11), pp.122. ⟨10.1140/epje/i2015-15122-4⟩
Article dans une revueElectrostatic template-assisted deposition of microparticles on electrospun nanofibers: towards microstructured functional biochips for screening applications
Salima Nedjari, Anne Hebraud, Sandy Eap, S. Siegwald, Christophe Melart, Nadia Jessel, Guy Schlatter
RSC Advances, 2015, 5 (102), pp.83600-83607. ⟨10.1039/C5RA15931H⟩
Article dans une revueAbstractElectrostatic Template-Assisted Deposition (ETAD) of microparticles is described as a new process to control the deposition of microparticles by electrospraying onto a substrate. It relies on the construction of an electrostatic template by electrospinning a thin layer of fibers onto a micropatterned collector. Because the fibers cannot release their charges when they are suspended over cavities of the micropatterned collector, an electrostatic template is formed with repulsive and attractive domains. This electrostatic template is then used to guide precisely the particle deposition during the electrospraying step. Microstructured bi-layer composites with a great variety of micropatterns can thus be elaborated with any kind of materials allowing the use of the ETAD process for a wide range of applications. As a proof of concept, the ETAD process was applied for the production of composite scaffolds with poly(ε-caprolactone) nanofibers covered by a micropatterned layer of hydroxyapatite. This scaffold was then embedded in a biochip containing 21 wells and used for MG-63 cell proliferation and mineralization studies, showing their possible application in the screening of the scaffold structure for tissue engineering.
Long term follow up of two independent patients with Schinzel-Giedion carrying SETBP1 mutations
Yann Herenger, Corinne Stoetzel, Elise Schaefer, Sophie Scheidecker, Marie Cecile Maniere, Valérie Pelletier, Yves Alembik, Dominique Christmann, Andre Clavert, Joelle Terzic, Michel Fischbach, Anne de Saint Martin, Hélène Dollfus
Eur J Med Genet, 2015, 58 (9), pp.479-487. ⟨10.1016/j.ejmg.2015.07.004⟩
Article dans une revueAbstractSchinzel-Giedion syndrome (SGS, MIM #269150) is a rare syndrome characterized by severe intellectual disability, typical facial gestalt, hypertrichosis and multiple congenital malformations including skeletal, genitourinary, renal and cardiac abnormalities. The prognosis of SGS is very severe and death occurs generally within a few years after birth. In 2002, we reported 2 children with SGS with a follow-up of 3 years. They presented a very similar and particular phenotype associating distinctive facial gestalt, severe developmental delay, megacalycosis, progressive neurodegeneration, alacrimi, corneal hypoesthesia and deafness. Furthermore, temporal bone imaging revealed a tuning-fork malformation of the stapes. In 2010, Hoischen et al. identified in SGS patients pathogenic heterozygous de novo mutations in SETBP1. We sequenced SETBP1 in our patients and found the previously reported c.2608G>A (p.Gly870Ser) mutation in both children. Since 2002, one of our patients died at 6 years old and the other patient is still alive at 15 years old. Such a life expectancy has never been reported so far. We describe herein the follow up of the 2 children during 6 and 15 years respectively. This article gives further evidence of the implication of SETBP1 as the major gene of SGS, and reports the previously unseen natural evolution of the disease in a 15 years old patient.
Nanoscale Stiffness Distribution in Bone Metastasis
Ludovic Richert, Laetitia Keller, Quentin Wagner, Fabien Bornert, Catherine Gros, Sophie Bahi, François Clauss, William Bacon, Philippe Clézardin, Nadia Benkirane-Jessel, Florence Fioretti
World Journal of Nano Science and Engineering, 2015, 05 (04), pp.219-228. ⟨10.4236/wjnse.2015.54023⟩
Article dans une revueRare oral metastasis from a probable large-cell neuroendocrine carcinoma of the lung
Béatrice Souron, Noëlle Weingertner, Frédéric Seigle-Murandi, Bernard Goichot, Raoul Herbrecht, Philippe Schultz, Feki Ahmed, Fabrice Hubele, Fabien Bornert
Médecine Buccale Chirurgie Buccale, 2015, 22, ⟨10.1051/mbcb/2015054⟩
Article dans une revueAbstractAbstract – Introduction: The prevalence of neuroendocrine tumors is 1/100 000 worldwide. Lung locations account for 25% and the oral cavity is very rarely involved. Observation: We reported the case of gingival hyperplasia around an upper molar in a patient with a medical history of lung adenocarcinoma treated by targeted chemotherapy. Incisional biopsy of the intraoral lesion revealed a large-cell neuroendocrine carcinoma (LCNEC). New imaging assessment revealed multiple metastasis locations of the lung disease. This case made us question the link between gingival LCNEC and the lung adenocarcinoma diagnosed through pleural cytology. Review of cytology findings did not make it possible to identify a neuroendocrine component among adenocarcinoma cells. Immunohistochemical tools sometimes help to differentiate primary from secondary lesions, but this was inconclusive here. Discussion: The literature shows that in cases of lung composite carcinoma, one component may be absent on small histology samples, and therefore on cytology. It was not possible either to rule out neuroendocrine carcinoma development under the effect of targeted chemotherapy. We considered the diagnosis of intraoral metastasis of a composite lung carcinoma which metastasized to its neuroendocrine component in the oral cavity. Conclusion: To our knowledge, this is the first case of LCNEC gingival hyperplasia revealing metastatic progression of lung adenocarcinoma.
The impact of hospital and surgeon volume on the 30-day mortality of lung cancer surgery: A nation-based reappraisal
Pierre-Emmanuel Falcoz, Marc Puyraveau, Caroline Rivera, Alain Bernard, Gilbert Massard, Frederic Mauny, Marcel Dahan, Pascal-Alexandre Thomas
The Internet Journal of Thoracic and Cardiovascular Surgery, 2014, 148 (3), pp.841. ⟨10.1016/j.jtcvs.2014.01.030⟩
Article dans une revueImpact of anti-insulin antibodies on islet transplantation outcome: data from the GRAGIL Network
Sandrine Lablanche, Sophie Borot, Olivier Thaunat, François Bayle, Lionel Badet, Emmanuel Morelon, Charles Thivolet, Anne Wojtusciszyn, Luc Frimat, Laurence Kessler, Alfred Penfornis, Coralie Brault, Cyrille Colin, Domenico Bosco, Thierry Berney, Pierre-Yves Benhamou, Gragil Network
Transplantation, 2014, 98 (4), pp.475-82. ⟨10.1097/TP.0000000000000081⟩
Article dans une revueAbstractBACKGROUND: In patients with type 1 diabetes, insulin antibodies (IA), altering the pharmacokinetics of circulating insulin, might be associated with high glucose concentration, prolonged hypoglycemia, and higher insulin requirement. The impact of IA on islet transplantation has never been explored. Our aim was to evaluate islet transplantation results at 1 year according to the presence of IA. METHODS: Our work is a retrospective, case-control study, comparing IA-negative and IA-positive patients among the cohort of patients with type 1 diabetes transplanted within the Swiss-French GRAGIL network between 2003 and 2010. RESULTS: Data about IA were available for 17 patients. Before islet transplantation, 10 patients (59%) were screened positive for IA. At 12 months after transplantation, IA-positive patients reached insulin independence less frequently than IA-negative patients (cumulative incidence of insulin independence, 22.2% vs. 71.4%; P=0.02); beta score was \textgreater/=7 in 43% of IA-negative patients versus 0% in IA-positive patients (P=0.022). When comparing IA-positive patients with IA-negative patients, insulin dose was 0.15 U/kg (0.10-0.18 U/kg) versus 0.01 U/kg (0-0.09 U/kg) (P=0.2); HbA1c was 6.1% (5.8%-6.3%) versus 6.1% (5.9%-6.8%) (P=0.16); basal C-peptide level was 460 rhomol/L (350-510 rhomol/L) versus 265 rhomol/L (177-405 rhomol/L) (P=0.28); occurrence of hypoglycemia was 12.5% versus 16.5% (P=0.9); and homeostatic model assessment insulin resistance was 1.25 (1-2.4) versus 0.7 (0.52-0.92) (P=0.01). CONCLUSION: After islet transplantation, IA-positive patients achieved insulin independence less frequently, exhibiting lower beta score and higher homeostatic model assessment insulin resistance compared with IA-negative patients. However, in both groups, islet transplantation restored good glycemic control and drastically reduced hypoglycemia and insulin requirements.
The prothrombotic paradox of severe obesity after cardiac surgery under cardiopulmonary bypass
Michel Kindo, Tam Hoang Minh, Sebastien Gerelli, Nicolas Meyer, Mickael Schaeffer, Stephanie Perrier, Jonathan Bentz, Tarek Announe, Arnaud Mommerot, Olivier Collange, Sandrine Marguertie, Adrien Thibaud, Hubert Gros, Philippe Billaud, Jean-Philippe Mazzucotelli
Thrombosis Research, 2014, 134 (2), pp.346-353. ⟨10.1016/j.thromres.2014.06.008⟩
Article dans une revueAbstractBACKGROUND: Obesity is suggested to reduce postoperative bleeding in patients undergoing cardiac surgery with cardiopulmonary bypass (CPB) but perioperative hemostasis variations have not been studied. Therefore, we investigated the effects of severe obesity (body mass index [BMI] >/=35kg/m(2)) on chest tube output (CTO) and hemostasis in patients undergoing cardiac surgery with CPB. MATERIALS AND METHODS: We prospectively investigated 2799 consecutive patients who underwent coronary and/or valve surgery using CPB between 2008 and 2012. 204 patients (7.3%) presented a severe obesity. RESULTS: In the severe obesity group, the 6-h and 24-h CTO were significantly reduced by -21.8% and -14.8% respectively (P<0.0001) compared with the control group. A significant reduction of the mean number of red blood cell units transfused at 24h was observed in the severe obesity groups (P=0.01). On admission to the intensive care unit, a significant increase of platelet count (+9.2%; P<0.0001), fibrinogen level (+12.2%; P<0.0001) and prothrombin time (+4.1%; P<0.01) and a significant decrease of the activated partial thromboplastin time (-4.2%; P<0.01) were observed in the severe obesity group compared with the control group. In multivariate analysis, severe obesity was significantly associated to a decreased risk of excessive bleeding (24-h CTO >90th percentile; Odds ratio: 0.37, 95% CI: 0.17 to 0.82). No significant differences were observed regarding postoperative thromboembolic events between the two groups. CONCLUSIONS: Severe obesity is associated with a prothrombotic postoperative state that leads to a reduction of postoperative blood loss in patients undergoing cardiac surgery with CPB.
Plasma fibrinogen level on admission to the intensive care unit is a powerful predictor of postoperative bleeding after cardiac surgery with cardiopulmonary bypass
Michel Kindo, Tam Hoang Minh, Sebastien Gerelli, Stephanie Perrier, Nicolas Meyer, Mickael Schaeffer, Jonathan Bentz, Tarek Announe, Arnaud Mommerot, Olivier Collange, Julien Pottecher, Mircea Cristinar, Jean-Claude Thiranos, Hubert Gros, Paul-Michel Mertes, Philippe Billaud, Jean-Philippe Mazzucotelli
Thrombosis Research, 2014, 134 (2), pp.360-368. ⟨10.1016/j.thromres.2014.05.008⟩
Article dans une revueAbstractINTRODUCTION: Evidence regarding the behavior of fibrinogen levels and the relation between fibrinogen levels and postoperative bleeding is limited in cardiac surgery under cardiopulmonary bypass (CPB). To evaluate perioperative fibrinogen levels as a predictor of postoperative bleeding in patients undergoing cardiac surgery with CPB. MATERIALS AND METHODS: In this prospective, single-center, observational cohort study of 1956 patients following cardiac surgery with CPB, fibrinogen level was measured perioperatively. Excessive bleeding group was defined as patients with a 24-h chest tube output (CTO) exceeded the 90th percentile of distribution. RESULTS: The median 24-h CTO was 728.6+/-431.1ml. A total of 189 patients (9.7%) were identified as having excessive bleeding. At admission to the intensive care (Day 0), the fibrinogen levels were 2.5+/-0.8g/l and 2.1+/-0.8g/l in the control and excessive bleeding groups, respectively (P<0.0001). The fibrinogen level on Day 0 was significantly correlated with the 24-h CTO (rho=-0.237; P<0.0001). Multivariate analysis demonstrated that the fibrinogen level at Day 0 was the best perioperative standard laboratory test to predict excessive bleeding (P=0.0001; odds ratio, 0.5), whereas preoperative fibrinogen level was not a predictor. Using receiver operating characteristics curve analyses, the best Day 0 fibrinogen level cutoff to predict postoperative bleeding was 2.2g/l. CONCLUSIONS: In this large prospective study, the fibrinogen level upon admission to the intensive care unit after CPB predicted the risk of postoperative bleeding. Our data add to the concern regarding the fibrinogen level threshold that might require fibrinogen concentrate infusion to reduce postoperative blood loss.
Nanomechanical Properties of Active Nanofibrous Implants After In Vivo Bone Regeneration
S. Eap, L. Keller, A. Ferrand, J. Schiavi, D. Lahiri, S. Lemoine, S. Facca, F. Fioretti, D. Mainard, A. Agarwal, Nadia Benkirane-Jessel
Nano LIFE, 2014, 04 (01), pp.1450001. ⟨10.1142/S1793984414500019⟩
Article dans une revueAbstractWith the aging of the population and a correlated increase in the incidence of osteoarticular damage, great attention is focused on regenerative nanomedicine solutions to restore durable articular function and comfort. A durable cartilage repair is not effective without regeneration of an intact subchondral bed along with the surface chondral regeneration. Our expected outcomes are the development of clinical applications in the field of tissue engineering and nanomedicine, and more particularly in bone-cartilage unit regeneration. Here we report for the first time the nanomechanical analysis of the retrieved active implant after subchondral bone regeneration in vivo, which is much more efficient and long lasting solution to osteochondral defects than the existing ones. We believe that our results make a significant contribution to the area of regenerative nanomedicine. The concepts discovered here may serve to design sophisticated implants for placement into a broad variety of tissues.
Telemedicine and type 1 diabetes: is technology per se sufficient to improve glycaemic control?
S. Franc, S. Borot, O. Ronsin, J. L. Quesada, D. Dardari, C. Fagour, E. Renard, A. M. Leguerrier, C. Vigeral, F. Moreau, P. Winiszewski, A. Vambergue, H. Mosnier-Pudar, Laurence Kessler, S. Reffet, B. Guerci, L. Millot, S. Halimi, Charles Thivolet, P. Y. Benhamou, A. Penfornis, G. Charpentier, H. Hanaire
Diabetes & Metabolism, 2014, 40 (1), pp.61-6. ⟨10.1016/j.diabet.2013.09.001⟩
Article dans une revueAbstractAIM: In the TELEDIAB-1 study, the Diabeo system (a smartphone coupled to a website) improved HbA1c by 0.9% vs controls in patients with chronic, poorly controlled type 1 diabetes. The system provided two main functions: automated advice on the insulin doses required; and remote monitoring by teleconsultation. The question is: how much did each function contribute to the improvement in HbA1c? METHODS: Each patient received a smartphone with an insulin dose advisor (IDA) and with (G3 group) or without (G2 group) the telemonitoring/teleconsultation function. Patients were classified as "high users" if the proportion of "informed" meals using the IDA exceeded 67% (median) and as "low users" if not. Also analyzed was the respective impact of the IDA function and teleconsultations on the final HbA1c levels. RESULTS: Among the high users, the proportion of informed meals remained stable from baseline to the end of the study 6months later (from 78.1+/-21.5% to 73.8+/-25.1%; P=0.107), but decreased in the low users (from 36.6+/-29.4% to 26.7+/-28.4%; P=0.005). As expected, HbA1c improved in high users from 8.7% [range: 8.3-9.2%] to 8.2% [range: 7.8-8.7%] in patients with (n=26) vs without (n=30) the benefit of telemonitoring/teleconsultation (-0.49+/-0.60% vs -0.52+/-0.73%, respectively; P=0.879). However, although HbA1c also improved in low users from 9.0% [8.5-10.1] to 8.5% [7.9-9.6], those receiving support via teleconsultation tended to show greater improvement than the others (-0.93+/-0.97 vs -0.46+/-1.05, respectively; P=0.084). CONCLUSION: The Diabeo system improved glycaemic control in both high and low users who avidly used the IDA function, while the greatest improvement was seen in the low users who had the motivational support of teleconsultations.
Continuous glucose monitoring in hemodialyzed patients with type 2 diabetes: a multicenter pilot study
Lori Kepenekian, Agnieszka Smagala, Laurence Meyer, Olivier Imhoff, Farideh Alenabi, Liviu Serb, Dominique Fleury, François Dorey, Thierry Krummel, Jean-Pierre Le Floch, François Chantrel, Laurence Kessler
Clinical Nephrology, 2014, 82 (4), pp.240-246. ⟨10.5414/cn108280⟩
Article dans une revueAbstractAIMS: Hemodialyzed patients with diabetes face an increased cardiovascular risk. Optimal glycemic control can reduce morbidity and mortality, but it is difficult to achieve because of the alternation between dialysis and non-dialysis periods. This study evaluated the contribution of continuous glucose monitoring (CGM) to the management of insulin regimen. METHODS: In this pilot prospective multicenter study, we performed CGM (Navigator(R), Abbott, Rungis, France) for a total of 54 hours at baseline and for a 3-month follow-up period in a group of 28 hemodialyzed patients with type 2 diabetes treated by a basal-bolus detemir plus aspart insulin regimen. Insulin therapy was adapted to the CGM values. HbA1c and CGM parameters collected over the 3-month treatment period were compared using MANOVA for repeated measures. RESULTS: After 3 months, HbA1c significantly decreased from 8.4 +/- 1.0% (65 +/- 1 mmol/mol) to 7.6 +/- 1.0% (60 +/- 11 mmol/mol; p < 0.01). Similarly, mean CGM glucose values significantly decreased from 9.9 +/- 1.9 to 8.9 +/- 2.1 mmol/L (p = 0.05). The frequency of glucose values > 10 mmol/L significantly decreased from 41.3 +/- 21.9% to 30.1 +/- 22.4% (p < 0.05), without a significant increase in the frequency of glucose values < 3.3 mmol/L. Insulin requirements significantly increased from 70 +/- 51 IU/d to 82 +/- 77 IU/d (p < 0.001), without significant changes in body weight. CONCLUSIONS: CGM-adapted insulin regimen improves glycemic control without increasing hypoglycemic events in hemodialyzed diabetic patients. CGM could be a useful tool for the management of insulin therapy in these patients. These results need to be confirmed by long-term studies with larger sample sizes.
Reply to : Routine Low-Molecular-Weight Heparin Bridging After Mechanical Valve Implantation: Is it Justified?
Michel Kindo, Tam Hoang Minh, Stephanie Perrier, Jean-Philippe Mazzucotelli
Annals of Thoracic Surgery, 2014, 98 (6), pp.2275. ⟨10.1016/j.athoracsur.2014.09.044⟩
Article dans une revueDoes nodal status influence survival? Results of a 19-year systematic lymphadenectomy experience during lung metastasectomy of colorectal cancer
Stéphane Renaud, Marco Alifano, Pierre-Emmanuel Falcoz, Pierre Magdeleinat, Nicola Santelmo, Olivier Pagès, Gilbert Massard, Jean-François Régnard
Interactive Cardiovascular and Thoracic Surgery, 2014, 18 (4), pp.482-487. ⟨10.1093/icvts/ivt554⟩
Article dans une revueAbstractOBJECTIVES: Resection of pulmonary metastases originating from colorectal cancer is increasingly considered. While several adverse risk factors for long-term outcome are known, the selection of patients who may benefit from surgery remains unclear. In particular, few studies have addressed the impact of lymph node involvement, and signification of the hilar or mediastinal level of extent. METHODS: We retrospectively reviewed the data of 320 patients operated in two thoracic departments between 1992 and 2011. Appropriate statistical tests were used to compare groups at risk. RESULTS: There were 105 women and 215 men with a mean age of 63.3 years (range: 27–86) at the time of metastasectomy. Lymph node involvement appeared as a significant prognostic factor in both the univariate and multivariate analyses [median survival: 94 months N0 vs 42 months N+, P < 0.0001; OR = 0.573 (0.329–1), P = 0.05]. Survival was similar for hilar and mediastinal locations (median survival: 47 months vs 37 months, respectively, P = 0.14). Associated hepatic metastases had a negative impact on survival in both univariate and multi-variate analyses [median survival: 74 months vs 47 months, P < 0.01; OR = 0.387 (0.218–0.686), P = 0.001]. Multiple lung metastases significantly decreased survival in univariate analysis only (median survival: 81 months vs 55 months, P < 0.01). Disease-free survival and preoperative carcinoembryonic antigen had no impact on survival. CONCLUSIONS: While lymph node involvement was associated with decreased survival, the impact of mediastinal location on survival did not differ from that of hilar location. Consequently, these patients should not be excluded from surgical treatment.
Immunomodulation stimulates the innervation of engineered tooth organ
Tunay Kokten, Thibault Becavin, Laetitia Keller, Jean-Luc Weickert, Sabine Bopp-Kuchler, Herve Lesot
PLoS ONE, 2014, 9 (1), pp.e86011. ⟨10.1371/journal.pone.0086011⟩
Article dans une revueAbstractThe sensory innervation of the dental mesenchyme is essential for tooth function and protection. Sensory innervation of the dental pulp is mediated by axons originating from the trigeminal ganglia and is strictly regulated in time. Teeth can develop from cultured re-associations between dissociated dental epithelial and mesenchymal cells from Embryonic Day 14 mouse molars, after implantation under the skin of adult ICR mice. In these conditions however, the innervation of the dental mesenchyme did not occur spontaneously. In order to go further with this question, complementary experimental approaches were designed. Cultured cell re-associations were implanted together with trigeminal ganglia for one or two weeks. Although axonal growth was regularly observed extending from the trigeminal ganglia to all around the forming teeth, the presence of axons in the dental mesenchyme was detected in less than 2.5% of samples after two weeks, demonstrating a specific impairment of their entering the dental mesenchyme. In clinical context, immunosuppressive therapy using cyclosporin A was found to accelerate the innervation of transplanted tissues. Indeed, when cultured cell re-associations and trigeminal ganglia were co-implanted in cyclosporin A-treated ICR mice, nerve fibers were detected in the dental pulp, even reaching odontoblasts after one week. However, cyclosporin A shows multiple effects, including direct ones on nerve growth. To test whether there may be a direct functional relationship between immunomodulation and innervation, cell re-associations and trigeminal ganglia were co-implanted in immunocompromised Nude mice. In these conditions as well, the innervation of the dental mesenchyme was observed already after one week of implantation, but axons reached the odontoblast layer after two weeks only. This study demonstrated that immunodepression per se does stimulate the innervation of the dental mesenchyme.
Papillary fibroelastoma of the tricuspid valve: a perioperative diagnosis
Aurélien Roumy, Sebastien Gerelli, Paolo Di Marco, Jean-Philippe Mazzucotelli
European Journal of Cardio-Thoracic Surgery, 2014, 46 (3), ⟨10.1093/ejcts/ezt644⟩
Article dans une revueExclusive low-molecular-weight heparin as bridging anticoagulant after mechanical valve replacement
Michel Kindo, Sebastien Gerelli, Tam Hoang Minh, Min Zhang, Nicolas Meyer, Tarek Announe, Jonathan Bentz, Ziad Mansour, Arnaud Mommerot, Hélène Petit-Eisenmann, Hélène Kremer, Olivier Collange, Julien Pottecher, Mircea Cristinar, Jean-Claude Thiranos, Philippe Billaud, Jean-Philippe Mazzucotelli
Annals of Thoracic Surgery, 2013, 97 (3), pp.789-795. ⟨10.1016/j.athoracsur.2013.09.040⟩
Article dans une revueAbstractBACKGROUND: Unfractionated heparin has been the standard anticoagulant used immediately after mechanical heart valve replacement (MHVR). The purpose of this study was to assess a postoperative anticoagulation protocol with low-molecular-weight heparin (LMWH) immediately after MHVR without the use of unfractionated heparin or anti-factor Xa monitoring. METHODS: We performed a prospective, single-center, observational study of 1,063 consecutive patients undergoing elective MHVR with postoperative LMWH anticoagulation treatment. The exclusion criteria were as follows: renal failure, intraaortic balloon counterpulsation, critical perioperative state, or a recent neurologic event. The postoperative anticoagulation protocol used subcutaneous enoxaparin as a bridging anticoagulant treatment beginning on the first postoperative day and continuing until vitamin K antagonist treatment was fully effective. Patients were followed for 6 weeks. The primary endpoints were the incidence of thromboembolic or major bleeding events. RESULTS: Eleven (1%) thromboembolic events occurred. Ten of these events were transient or permanent strokes. Major bleeding events occurred in 44 patients (4.1%), 7 of which were observed before the enoxaparin treatment period. At the time of discharge, 570 patients (53.6%) were no longer receiving LMWH treatment due to achieving the target international normalized ratio. The mean length of hospital stay was 8.5 +/- 2.9 days. There were no deaths during the 6-week follow-up period. CONCLUSIONS: In our highly selected population, after MHVR, postoperative anticoagulation using LMWH is associated with a low rate of thromboembolic and major bleeding events. This large observational study demonstrates that the use of LMWH as an anticoagulant is effective and safe after MHVR.
Previously undescribed pulpal and periodontal ligament calcifications in systemic sclerosis: a case report
Sophie Jung, Maryline Minoux, Marie Cecile Manière, Thierry Martin, Mathieu Schmittbuhl
Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, 2013, 115 (4), pp.e47-e51. ⟨10.1016/j.oooo.2012.09.091⟩
Article dans une revueCoronary artery bypass grafting or percutaneous revascularization in acute myocardial infarction?
Stephanie Perrier, Michel Kindo, Sebastien Gerelli, Jean-Philippe Mazzucotelli
Interactive Cardiovascular and Thoracic Surgery, 2013, 17 (6), pp.1015-1019. ⟨10.1093/icvts/ivt381⟩
Article dans une revueAbstractA best evidence topic in cardiac surgery was written according to a structured protocol. The question addressed was as follows: is coronary artery bypass graft (CABG) surgery superior to percutaneous coronary intervention (PCI) in terms of in-hospital mortality and morbidity and long-term outcomes in patients with acute myocardial infarction (MI)? A total of 104 papers were returned using the selected search. Of these, six represented the best evidence to answer the clinical question. The selection criteria were comparative studies with only PCI and CABG groups in patients with acute MI. Case reports, reviews, recommendations and studies on a specific population or out of the context of acute MI were excluded. The authors, journal, date and country of publication, patient group studied, study type, relevant outcomes and results of these papers are tabulated. Almost all PCI patients received stents. One study used drug-eluting stents (DES). Two randomized studies showed similar short- and mid-term morbidities and mortalities in patients with acute MI in the PCI and CABG groups but higher repeat revascularization rates after PCI. Three observational studies found comparable survival, but one of them found more periprocedural events with CABG and the other two found more recurrent ischaemia requiring repeat revascularization in the PCI group. In one cohort study, CABG appeared to be an independent risk factor for death in N-STEMI according to the European Society/American College of Cardiology 2000 definition. The results are strongly influenced by the definition of acute MI. In an institution offering the two techniques with an equivalent accessibility, the principal advantage of PCI is a lower incidence of periprocedural and short-term morbidities. CABG, on the other hand, offers a better durability with less mid-term repeat revascularization required, especially when compared with PCI with DES implantation. Choice had to weight up coronary artery anatomy, number and localization of coronary artery stenosis and accessibility of both PCI and CABG treatments. Medical and surgical discussion within the Heart Team is required to make the best medical decision for each patient.
Analyse des résultats d’une série de 20 patients traités par irradiation hypofractionnée en conditions stéréotaxiques par Novalis Tx® pour un cancer bronchopulmonaire non à petites cellules de stade I [= An analysis of 20 consecutive patients treated with stereotactic body radiotherapy on Novalis Tx(®) for stage I non-small-cell lung cancer]
F Guillerme, J Clavier, C Schumacher, Pierre-Emmanuel Falcoz, K Bourrhala, N Santelmo, S Hassler, R Schott, E Quoix, Gilbert Massard, G. Noël
Cancer radiothérapie, 2013, 17 (4), pp.272-281. ⟨10.1016/j.canrad.2013.01.021⟩
Article dans une revueAbstractPURPOSE: Recent clinical results of dose escalation with stereotactic body radiation therapy to increase local tumour control for patients with stage I non-small-cell lung cancer who either refuse surgery or are medically inoperable resulted in making it a standard treatment in this setting. This treatment technique was implemented at the Paul-Strauss Centre, Strasbourg, in 2010. The objective of this study is to describe and analyze the data of the first 20 treated patients. PATIENTS AND METHODS: From October 2010 to May 2012, 20 patients were treated with this technique for T1N0M0 or T2N0M0 lung tumour. The indication was proposed by the multidisciplinary thoracic oncology team meeting, and approved by the technical committee of the Department of Radiotherapy. After the realization of a dosimetric CT Scan (4DCT or three phases-free breathing and deep breath-hold inspiration and expiration) and after performing a ((18)F)-FDG PET scan in the treatment position, all patients were treated on Novalis Tx(®) linear accelerator, with arctherapy or modulated intensity radiotherapy (IMRT). A protocol has been defined for the prescribed dose, depending on the size and location of the tumor, central or peripheral. The patients underwent follow-up during treatment and at 1 month, 3-4 months, 6 and 9 months to assess outcomes and toxicities. RESULTS: The mean age was 72.6 years (52-89). Seventeen patients had one or more pulmonary comorbidities. The mean delivered dose was 59.9 Gy (40-70) in 4 Gy to 17.5 Gy fractions. The mean gross tumour volume was 14.9 mL (median 7.2, 0.9 to 73.5) and the mean planning target volume was 77.8 mL (median 49.5; 17-300). The mean initial SUV max was 7.7 (1.8 to 16.7). Dose constraints and planning target volume coverage recommended by the protocol were achieved in the majority of cases. The mean lung V20 was 7.63% (1.2 to 17.7) and the mean dose delivered to the planning target volume was 94.6% (88-99). The duration of treatment was 21 days (median: 23; 8-27), and no change or interruption of prescribed treatment has occurred. Median follow-up was 6.6 months, and crude rates of objective response for patients evaluated were 85% (11/13 patients) at 3 months and 100% at 6 and 9 months. The complete response rate at 3 and 6 months were 0 (0/13 patients) and 50% (5/10 patients). Two patients had metastatic disease in the 6 months following treatment. Concerning pulmonary toxicity at 3 months, 6 patients developed G2 radiation pneumonitis and three patients G3, with positive evolution. CONCLUSION: The analysis of the results of this series, comparable with those described in literature, shows that lung stereotactic radiotherapy is an effective and well-tolerated treatment for inoperable patients. The extension of the indications could be envisaged based on the results of ongoing trials.
Periodontal and systemic responses in various mice models of experimental periodontitis: respective roles of inflammation duration and Porphyromonas gingivalis infection
Kenza Saadi-Thiers, Olivier Huck, Pierre Simonis, Peggy Tilly, Jean-Etienne Fabre, Henri Tenenbaum, Jean-Luc Davideau
Journal of periodontology, 2013, 84 (3), pp.396-406. ⟨10.1902/jop.2012.110540⟩
Article dans une revueAbstractBACKGROUND: The great variability of periodontal and systemic responses to experimental periodontitis reflects the inherent pathogenic complexity of mice models and could limit the resulting interpretations and their extension to human diseases. This study compared the effect of Porphyromonas gingivalis (Pg) infection and experimental periodontitis duration at local and systemic levels in various models. METHODS: Periodontitis was induced in C57BL/6J mice by ligatures previously incubated with Pg (LIGPG group) or not (LIG group) or by oral gavage (GAV) with Pg ATCC 33277. Blood samples were taken, and mice were euthanized at different times. Periodontal tissue destruction, osteoclast number, and inflammation were assessed by histomorphometry, tartrate-resistant acid phosphatase histoenzymology, and cathepsin B (CATB) and matrix metalloproteinase 9 (MMP9) immunochemistry. Serum levels of interleukin-6 (IL-6) and IL-1beta were measured using enzyme-linked immunosorbent assay bioplex methods. RESULTS: Periodontal tissue destruction and osteoclast numbers were significantly elevated in LIGPG models compared to LIG and GAV models. They increased with time with the exception of osteoclast numbers in the LIG model. CATB and MMP9 expression was related to bone destruction processes and Pg infection. The highest serum levels of IL-6 and IL-1beta were observed in the LIGPG group. A decrease of IL-6 and an increase of IL-1beta serum level were observed with time in LIGPG group contrary to LIG group. CONCLUSIONS: These data indicate that Pg infection worsened periodontal tissue destruction through specific pathogenic pathways and modified systemic response to periodontal inflammation. Furthermore, the blood cytokine response to ligature models showed their relevance for evaluating the systemic impact of periodontal disease.
Nephrocalcinosis (Enamel Renal Syndrome) Caused by Autosomal Recessive FAM20A Mutations
Graciana Jaureguiberry, Muriel de la Dure-Molla, David Parry, Mickael Quentric, Nina Himmerkus, Toshiyasu Koike, James Poulter, Enriko Klootwijk, Steven L. Robinette, Alexander J. Howie, Vaksha Patel, Marie-Lucile Figueres, Horia C. Stanescu, Naomi Issler, Jeremy K. Nicholson, Detlef Bockenhauer, Christopher Laing, Stephen B. Walsh, David A. Mccredie, Sue Povey, Audrey Asselin, Arnaud Picard, Aurore Coulomb, Alan J. Medlar, Isabelle Bailleul-Forestier, Alain Verloes, Cedric Le Caignec, Gwenaelle Roussey, Julien Guiol, Bertrand Isidor, Clare Logan, Roger Shore, Colin Johnson, Christopher Inglehearn, Suhaila Al-Bahlani, Matthieu Schmittbuhl, François Clauss, Mathilde Huckert, Virginie Laugel, Emmanuelle Ginglinger, Sandra Pajarola, Giuseppina Spartà, Deborah Bartholdi, Anita Rauch, Marie-Claude Addor, Paulo M. Yamaguti, Heloisa P. Safatle, Ana Carolina Acevedo, Hercílio Martelli-Júnior, Pedro E. dos Santos Netos, Ricardo D. Coletta, Sandra Gruessel, Carolin Sandmann, Denise Ruehmann, Craig B. Langman, Steven J. Scheinman, Didem Ozdemir-Ozenen, Thomas C. Hart, P. Suzanne Hart, Ute Neugebauer, Eberhard Schlatter, Pascal Houillier, William A. Gahl, Miikka Vikkula, Agnès Bloch-Zupan, Markus Bleich, Hiroshi Kitagawa, Robert J. Unwin, Alan Mighell, Ariane Berdal, Robert Kleta
Nephron Physiology, 2013, 122 (1-2), pp.1--6. ⟨10.1159/000349989⟩
Article dans une revueAbstracttextbf\textitBackground/Aims: Calcium homeostasis requires regulated cellular and interstitial systems interacting to modulate the activity and movement of this ion. Disruption of these systems in the kidney results in nephrocalcinosis and nephrolithiasis, important medical problems whose pathogenesis is incompletely understood. \textbf\textitMethods: We investigated 25 patients from 16 families with unexplained nephrocalcinosis and characteristic dental defects (amelogenesis imperfecta, gingival hyperplasia, impaired tooth eruption). To identify the causative gene, we performed genome-wide linkage analysis, exome capture, next-generation sequencing, and Sanger sequencing. \textbf\textitResults: All patients had bi-allelic \textitFAM20A mutations segregating with the disease; 20 different mutations were identified. \textbf\textitConclusions: This au-tosomal recessive disorder, also known as enamel renal syndrome, of \textitFAM20A causes nephrocalcinosis and amelogenesis imperfecta. We speculate that all individuals with biallelic \textitFAM20A mutations will eventually show nephrocalcinosis.
Role of Prokineticin Receptor-1 in Epicardial Progenitor Cells
Thu Lan Nguyen, Adeline Gasser, Canan G Nebigil
Journal of Developmental Biology, 2013, 1 (1), pp.20-31. ⟨10.3390/jdb1010020⟩
Article dans une revueAbstractG protein-coupled receptors (GPCRs) form a large class of seven transmembrane (TM) domain receptors. The use of endogenous GPCR ligands to activate the stem cell maintenance or to direct cell differentiation would overcome many of the problems currently encountered in the use of stem cells, such as rapid in vitro differentiation and expansion or rejection in clinical applications. This review focuses on the definition of a new GPCR signaling pathway activated by peptide hormones, called “prokineticins”, in epicardium-derived cells (EPDCs). Signaling via prokineticin-2 and its receptor, PKR1, is required for cardiomyocyte survival during hypoxic stress. The binding of prokineticin-2 to PKR1 induces proliferation, migration and angiogenesis in endothelial cells. The expression of prokineticin and PKR1 increases during cardiac remodeling after myocardial infarction. Gain of function of PKR1 in the adult mouse heart revealed that cardiomyocyte-PKR1 signaling activates EPDCs in a paracrine fashion, thereby promoting de novo vasculogenesis. Transient PKR1 gene therapy after myocardial infarction in mice decreases mortality and improves heart function by promoting neovascularization, protecting cardiomyocytes and mobilizing WT1+ cells. Furthermore, PKR1 signaling promotes adult EPDC proliferation and differentiation to adopt endothelial and smooth muscle cell fate, for the induction of de novo vasculogenesis. PKR1 is expressed in the proepicardium and epicardial cells derived from mice kidneys. Loss of PKR1 causes deficits in EPDCs in the neonatal mice hearts and kidneys and impairs vascularization and heart and kidney function. Taken together, these data indicate a novel role for PKR1 in heart-kidney complex via EPDCs.
Epigallocatechin-3-gallate up-regulates tumor suppressor gene expression via a reactive oxygen species-dependent down-regulation of UHRF1
Mayada Achour, Marc Mousli, Mahmoud Alhosin, Abdulkhaleg Ibrahim, Jean Peluso, Christian Muller, Valerie Schini-Kerth, Ali Hamiche, Sirano Dhe-Paganon, Christian Bronner
Biochemical and Biophysical Research Communications, 2012, 430 (1), pp.208-212. ⟨10.1016/j.bbrc.2012.11.087⟩
Article dans une revueAbstractUbiquitin-like containing PHD and Ring finger 1 (UHRF1) contributes to silencing of tumor suppressor genes by recruiting DNA methyltransferase 1 (DNMT1) to their hemi-methylated promoters. Conversely, demethylation of these promoters has been ascribed to the natural anti-cancer drug, epigallocatechin-3-gallate (EGCG). The aim of the present study was to investigate whether the UHRF1/DNMT1 pair is an important target of EGCG action. Here, we show that EGCG down-regulates UHRF1 and DNMT1 expression in Jurkat cells, with subsequent up-regulation of p73 and p16(INK4A) genes. The down-regulation of UHRF1 is dependent upon the generation of reactive oxygen species by EGCG. Up-regulation of p16(INK4A) is strongly correlated with decreased promoter binding by UHRF1. UHRF1 over-expression counteracted EGCG-induced G1-arrested cells, apoptosis, and up-regulation of p16(INK4A) and p73. Mutants of the Set and Ring Associated (SRA) domain of UHRF1 were unable to down-regulate p16(INK4A) and p73, either in the presence or absence of EGCG. Our results show that down-regulation of UHRF1 is upstream to many cellular events, including G1 cell arrest, up-regulation of tumor suppressor genes and apoptosis.
Robotic-assisted thymectomy with Da Vinci II versus sternotomy in the surgical treatment of non-thymomatous myasthenia gravis: early results
S Renaud, N Santelmo, M Renaud, Marie-Céline Fleury-Lesaunier, Jerome de Seze, Christine Tranchant, Gilbert Massard
Revue Neurologique, 2012, 169 (1), pp.30-36. ⟨10.1016/j.neurol.2012.02.013⟩
Article dans une revueAbstractBACKGROUND: The role of thymectomy in myasthenia gravis remains controversial. The remission rate 5years after surgery varies from 13 to 51% in the literature. Sternotomy is the standard technique, though unacceptable by patients because of significant esthetic sequelae. Our objective was to demonstrate that the robot-assisted technique using the Da Vinci Surgical Robot II is at least as efficient and leaves fewer scars than the standard surgical technique. METHODS: We retrospectively reviewed the data of 31 consecutive patients suffering from myasthenia gravis who underwent surgery in our center from January 1998 to March 2010. Ten patients with thymoma were excluded from this study. Two groups were formed: group 1 corresponding to patients treated with sternotomy, group 2 patients with robot-assisted technique. The duration of the hospital stay, the pain on D1, the degree of improvement at 1year according to Myasthenia Gravis Foundation of America (MGFA) classification, the frequency of relapses, and perioperative treatment were studied. RESULTS: Our sample consisted of 14 women and seven men. The mean age was 31.3years. The mean delay before surgery was 24months. Group 1 included 15 patients and group 2 had six patients. The complete remission rate at 1year was 9.5% (n=2). Surgery decreased the frequency of relapses after surgery (P=0.08) equally in the two groups. The duration of hospital stay and the pain level on D1 in group 2 were significantly lower than those in group 1 (P=0.02 and P<0.001). The degree of postoperative improvement was not significantly different between the two groups (P=0.31). CONCLUSION: The results at 1year are fully comparable for sternotomy and the robot-assisted technique. The robot provides additional benefits of minimally invasive techniques: minimal esthetic sequelae in often young patients, less parietal morbidity (including pain), shorter hospital stays. Our complete remission rate, lower than those in the literature, must be considered taking into account the early nature of these results. The surgical robot, because of its many advantages, appears to be a promising technique and should facilitate the early management of these patients.
Does Making Method of Alginate Hydrogel Influence the Chondrogenic Differentiation of Human Mesenchymal Stem Cells?
Jessica Schiavi, Naceur Charif, Natalia De Isla, Danièle Bensoussan, Jean-François Stoltz, Nadia Benkirane-Jessel, Céline Huselstein
Engineering, 2012, 04 (10), pp.110-113. ⟨10.4236/eng.2012.410B028⟩
Article dans une revueAdherence to recommendations for the use of antifungal agents in a tertiary care hospital
Yasmine Nivoix, Anne Launoy, Philippe Lutun, Jean-Charles Moulin, Katy-Anna Phai Pang, Luc-Mathieu Fornecker, Michèle Colff, Dominique Leveque, Valerie Letscher-Bru, Laurence Beretz, Geneviève Ubeaud-Sequier, Raoul Herbrecht
Journal of Antimicrobial Chemotherapy, 2012, 67 (10), pp.2506-2513. ⟨10.1093/jac/dks256⟩
Article dans une revueAbstractOBJECTIVES: The aim of our study was to assess the adherence to labelling and international guidelines for antifungal prescribing. METHODS: A retrospective study was performed in intensive care units in addition to the oncology and haematology department, which covered 70% of antifungal consumption at Hautepierre Hospital, Strasbourg, France. On reviewing medical charts, the antifungal prescription was examined in relation to the recommendations of indication, dosage, risk of drug-drug interactions and, where appropriate, antifungal susceptibility testing. Treatments were considered appropriate, inappropriate or debatable. RESULTS: Between January and April 2007, 199 treatments were given for 179 different episodes in 133 adult patients. Treatments were prescribed for pre-emptive or targeted therapy (n = 90, with 60 for candidiasis, 26 for aspergillosis and 4 for other mould diseases), empirical therapy (n = 17) and primary (n = 81) or secondary (n = 11) prophylaxis. Fluconazole accounted for 67% of prescriptions, followed by voriconazole (19%), caspofungin (10%), posaconazole (2%), conventional or liposomal amphotericin B (2%), itraconazole (<1%) and terbinafine (<1%). Indication and dosage were found to be appropriate in 65% and 62% of cases, inappropriate in 22% and 21%, and debatable in 13% and 17%, respectively. The overall (by combining all assessment criteria) rate of inappropriate use was 40%. The overall survival rate at 12 weeks was highest in patients receiving appropriate therapy (81% versus 72% and 68% in the debatable and inappropriate therapy groups, respectively), with between-group differences not being significant (P = 0.49). CONCLUSIONS: Our evaluation revealed a high proportion of inappropriate or debatable use of antifungal agents, while highlighting significant issues, such as inadequate dosage or indications.
Red wine polyphenols improve an established aging-related endothelial dysfunction in the mesenteric artery of middle-aged rats: role of oxidative stress
Stephanie Dal-Ros, Christian Bronner, Cyril Auger, Valerie Schini-Kerth
Biochemical and Biophysical Research Communications, 2012, 419 (2), pp.381-387. ⟨10.1016/j.bbrc.2012.02.031⟩
Article dans une revueAbstractAging is associated with blunted endothelium-dependent relaxations and vascular oxidative stress. Our previous study has indicated that daily intake of red wine polyphenols (RWPs) by young rats retards aging-related endothelial dysfunction in middle-aged rats. The aim of the present study is to determine whether intake of RWPs also improves an established endothelial dysfunction in middle-aged rats and, if so, to determine the underlying mechanism. Middle-aged rats (51 weeks) received either solvent (3% ethanol), RWPs extract (100mg/kg/day) or the antioxidant and NADPH oxidase inhibitor apocynin (100mg/kg/day) in the drinking water for 4 weeks. Vascular reactivity of mesenteric artery rings from control young (12 weeks) and middle-aged rats was assessed in organ chambers. The expression level of endothelial NO synthase (eNOS), arginase I, angiotensin II receptors (AT1R and AT2R), NADPH oxidase subunits and nitrotyrosines was assessed by immunohistochemistry, and the vascular formation of reactive oxygen species (ROS) by dihydroethidine. Aging is associated with blunted endothelium-dependent relaxations, an excessive vascular formation of ROS and peroxynitrites, and an up-regulation of eNOS, arginase I, NADPH oxidase subunits (nox-1, p22phox), and AT1R and AT2R expression. RWPs and apocynin treatments improved endothelial dysfunction, normalized oxidative stress and the expression of the different proteins in the mesenteric artery of middle-aged rats. The present findings indicate that aging is associated with blunted endothelium-dependent relaxations involving an increased oxidative stress, and that these responses are improved by the intake of RWPs or apocynin for 4weeks most likely by normalizing the expression of eNOS, arginase I, NADPH oxidase and angiotensin receptors.
Association of estimated GFR with platelet inhibition in patients treated with clopidogrel
Clotilde Muller, Sophie Caillard, Laurence Jesel, Soraya El Ghannudi, Patrick Ohlmann, Eric-André Sauleau, Thierry Hannedouche, Christian Gachet, Bruno Moulin, Olivier Morel
American Journal of Kidney Diseases, 2012, 59 (6), pp.777-785. ⟨10.1053/j.ajkd.2011.12.027⟩
Article dans une revueAbstractBACKGROUND: The reasons that decreased glomerular filtration rate (GFR) might alter the clinical efficacy of clopidogrel are poorly understood. STUDY DESIGN: In this study, we sought to evaluate whether decreased GFR alters platelet response to clopidogrel in patients receiving a maintenance dose of clopidogrel (75 mg/d for at least 8 days). SETTINGS & PARTICIPANTS: 126 consecutive patients categorized by estimated GFR: stages 1-2 (>60 mL/min/1.73 m(2); n = 29), stage 3a (45-59 mL/min/1.73 m(2); n = 21); stage 3b (30-44 mL/min/1.73 m(2); n = 26), stage 4 (15-29 mL/min/1.73 m(2); n = 14), and stage 5 (<15 mL/min/1.73 m(2); n = 36) were prospectively enrolled. PREDICTOR: Residual platelet reactivity, defined in the VASP (Vasodilator Stimulated Phosphoprotein) flow cytometry test as platelet reactivity index (PRI) >/=61% and in the VerifyNow turbidimetric-based assay as a value >235 PRU (adenosine diphosphate receptor reaction units) or percentage of platelet inhibition <15%. OUTCOMES: We examined factors associated with low response to clopidogrel using logistic regression. RESULTS: A significant relationship between estimated GFR, PRI, PRU, and percentage of inhibition was found. The prevalence of residual platelet reactivity was highest in patients with GFR stage 5. PRI >/=61% occurred in 52.8% of patients with stage 5 versus 30.8% of stage 3b and 24.1% of stages 1-2 (P = 0.1). PRU >235 was found in 63.6% of patients with stage 5 versus 36.8% of stage 3b and 17.2% of stages 1-2 (P = 0.005). Inhibition <15% affected 66.7% of patients with stage 5 versus 21.1% of stage 3b and 17.2% of stages 1-2 (P < 0.001). In the multivariable model, GFR stage 5 (adjusted prevalence ratio [PR], 3.10; 95% CI, 1.23-9.43; P = 0.02), and obesity (adjusted PR, 1.92; 95% CI, 1.34-2.23; P = 0.004) were the sole predictors of residual platelet reactivity. LIMITATIONS: Interference of hemodialysis with the pharmacokinetics of clopidogrel could not be excluded. CONCLUSION: GFR stage 5 is associated with substantial impairment of platelet inhibition independently of diabetes mellitus.
Anti-neoplastic agent thymoquinone induces degradation of α and β tubulin proteins in human cancer cells without affecting their level in normal human fibroblasts
Mahmoud Alhosin, Abdulkhaleg Ibrahim, Abdelaziz Boukhari, Tanveer Sharif, Jean-Pierre Gies, Cyril Auger, Valérie Schini-Kerth
Investigational New Drugs, 2011, 30 (5), pp.1813-1819. ⟨10.1007/s10637-011-9734-1⟩
Article dans une revueDown-regulation of cyclic nucleotide phosphodiesterase PDE1A is the key event of p73 and UHRF1 deregulation in thymoquinone-induced acute lymphoblastic leukemia cell apoptosis
Abdurazzag Abusnina, Mahmoud Alhosin, Therese Keravis, Christian Muller, Guy Fuhrmann, Christian Bronner, Claire Lugnier
Cellular Signalling, 2011, 23 (1), pp.152-60. ⟨10.1016/j.cellsig.2010.08.015⟩
Article dans une revueAbstractThymoquinone (TQ), the active principle of Nigella sativa black seeds, has anti-proliferative properties on numerous cancer cell types. Others and we have previously reported that TQ acts as agent that triggers cell cycle arrest and apoptosis through either a p53- or p73-dependent pathway. However, the immediate targets recruited upon TQ-induced cytotoxicity have not yet been clearly identified. We therefore asked whether cyclic nucleotide phosphodiesterases (PDEs) could be involved in TQ-triggered pro-apoptotic reactivity; PDEs are regulators of intracellular levels of cyclic nucleotides and therefore can modulate cAMP and cGMP-dependent cell death pathways. Our results showed that TQ specifically repressed PDE1A expression in the acute lymphoblastic leukemia Jurkat cell line. This effect is concomitant with the previously described sequential deregulation of the expression of the tumor suppressor protein p73 and the epigenetic integrator UHRF1 (Ubiquitin-like, PHD Ring Finger 1). Interestingly, RNA-interference knock-down of PDE1A expression as well as decreased PDE1A expression induced growth inhibition of Jurkat cells, cell cycle arrest and apoptosis through an activation of p73 and a repression of UHRF1. Conversely, PDE1A re-expression counteracted the cellular pro-apoptotic effects of TQ in association with a p73 repression and UHRF1 re-expression. Altogether, our results show that TQ induced an initial down-regulation of PDE1A with a subsequent down-regulation of UHRF1 via a p73-dependent mechanism. This study further proposes that PDE1A might be involved in the epigenetic code inheritance by regulating, via p73, the epigenetic integrator UHRF1. Our findings also suggest that a forced inhibition of PDE1A expression might be a new therapeutic strategy for the management of acute lymphoblastic leukemia.
Original approach for cartilage tissue engineering with mesenchymal stem cells
Jessica Tritz-Schiavi, Naceur Charif, Christel Henrionnet, Natalia de Isla, Danièle Bensoussan, J. Magdalou, Nadia Benkirane-Jessel, J.F. Stoltz, Céline Huselstein
Bio-Medical Materials and Engineering, 2010, 20 (3-4), pp.167-174. ⟨10.3233/BME-2010-0628⟩
Article dans une revueRed wine polyphenols cause growth inhibition and apoptosis in acute lymphoblastic leukaemia cells by inducing a redox-sensitive up-regulation of p73 and down-regulation of UHRF1
Tanveer Sharif, Cyril Auger, Mahmoud Alhosin, Claudine Ebel, Mayada Achour, Nelly Etienne-Selloum, Guy Fuhrmann, Christian Bronner, Valerie Schini-Kerth
European Journal of Cancer, 2010, 46 (5), pp.983-994. ⟨10.1016/j.ejca.2009.12.029⟩
Article dans une revueAbstractSeveral epidemiological studies suggest that a diet rich in fruits and vegetables, which contain high levels of polyphenols, is associated with a reduced risk of cancer. The aim of the present study was to determine whether a red wine polyphenolic extract (RWPs, a rich source of polyphenols; 2.9g/L) affects the proliferation of human lymphoblastic leukaemia cells (Jurkat cells) and, if so, to determine the underlying mechanism. Cell proliferation and viability were determined by the MTS and trypan blue exclusion assays, respectively. Cell cycle analysis, apoptosis activity and oxidative stress levels were assessed by flow cytometry, and the expression of p73, UHRF1 and active caspase-3 by Western blot analysis. RWPs inhibited the proliferation of Jurkat cells and induced G0/G1 cell cycle arrest in a concentration-dependent manner. Moreover, RWPs triggered apoptosis, which is associated with an increased expression level of the pro-apoptotic protein p73 and the active caspase-3. RWPs induced apoptosis confirmed by DNA fragmentation analysis, and this effect was associated with down-regulation of the antiapoptotic protein UHRF1. Furthermore RWPs significantly increased the formation of reactive oxygen species (ROS). Intracellular scavengers of superoxide anions (MnTMPyP, MnTBAP, PEG-SOD) prevented the RWPs-induced formation of ROS and apoptosis, while native extracellular superoxide dismutase (SOD) was without effect. In addition, the effect of RWPs on the expression levels of p73, active caspase-3 and UHRF1 was also prevented by MnTMPyP. Thus, these findings indicate that RWPs induce apoptosis in Jurkat cells by a redox-sensitive mechanism involving the intracellular formation of superoxide anions and consequently the up-regulation of p73 and down-regulation of UHRF1.
The influence of inflammation on expression and activity of MDR1 and MRP2 in human intestinal cells
M.A. Aminatou, M Chabane, S. Dumont, J.L. Vonesch, Didier Hentsch, C.D. Muller, Geneviève Ubeaud
Fundamental & Clinical Pharmacology, 2010, 24, pp.64-65
Article dans une revueAdenoviral infection or deferoxamine? Two approaches to overexpress VEGF in beta-cell lines
Allan Langlois, William Bietiger, Marie-Christine Sencier, Elisa Maillard, Michel Pinget, Laurence Kessler, Séverine Sigrist
Journal of Drug Targeting, 2009, 17 (6), pp.415-422. ⟨10.1080/10611860902929832⟩
Article dans une revueAbstractRapid and adequate revascularization of transplanted islets is important for their survival and function during transplantation. Vascular endothelial growth factor (VEGF) could play a critical role with respect to islet revascularization. The aim of this study was to compare two strategies that are used to overexpress VEGF in beta-cells: (1) gene therapy through adenoviral infection and (2) a pharmacological approach using deferoxamine (DFO). beta-Cell lines from rat insulinoma (RINm5F) were either infected using an adenovirus encoding the gene of human VEGF 165 or incubated with DFO. One day after treatment, the viability of RINm5F cells was preserved with 10 micromol/L of DFO (103.95 +/- 5.66% toward control; n = 4). In addition, adenoviral infection maintained the viability of cells for all the concentrations used. In both treatments, overexpression of VEGF was in a comparable level. Finally, the ratio of Bax/Bcl-2 indicated that the apoptosis increased in infected beta-cells whereas treatment with DFO seems to be antiapoptotic. Our results suggest that the use of DFO could be a realistic approach to improve the vascularization of islets during transplantation.
Evidence for humoral rejection of a pancreatic islet graft and rescue with rituximab and IV immunoglobulin therapy
Laurence Kessler, A Parissiadis, F Bayle, F Moreau, Michel Pinget, N Froelich, Jean-Pierre Cazenave, T Berney, P Benhamou, Daniel Hanau
American Journal of Transplantation, 2009, 9, pp.1961-1966. ⟨10.1111/j.1600-6143.2009.02711.x⟩
Article dans une revueAngiotensin II induces the vascular expression of VEGF and MMP-2 in vivo: preventive effect of red wine polyphenols.
A Walter, Nelly Etienne-Selloum, M Sarr, Mo Kane, Alain Beretz, Valerie Schini-Kerth
Journal of Vascular Research, 2008, ⟨10.1159/000121408⟩
Article dans une revueDental Epithelial Histomorphogenesis in vitro
Bing Hu, Amal Nadiri, Sabine Bopp-Kuchler, Fabienne Perrin-Schmitt, Herve Lesot
Journal of Dental Research, 2005, 84 (6), pp.521-525. ⟨10.1177/154405910508400607⟩
Article dans une revueAbstractRecent developments in tooth-tissue engineering require that we understand the regulatory processes to be preserved to achieve histomorphogenesis and cell differentiation, especially for enamel tissue engineering. Using mouse first lower molars, our objectives were: (1) to determine whether the cap-stage dental mesenchyme can control dental epithelial histogenesis, (2) to test the role of the primary enamel knot (PEK) in specifying the potentialities of the dental mesenchyme, and (3) to evaluate the importance of positional information in epithelial cells. After tissue dissociation, the dental epithelium was further dissociated into individual cells, re-associated with dental mesenchyme, and cultured. Epithelial cells showed a high plasticity: Despite a complete loss of positional information, they rapidly underwent typical dental epithelial histogenesis. This was stimulated by the mesenchyme. Experiments performed at E13 demonstrated that the initial potentialities of the mesenchyme are not specified by the PEK. Positional information of dental epithelial cells does not require the memorization of their history.
Activation of human macrophages by allogeneic islets preparations: inhibition by AOP-RANTES and heparinoids
Séverine Sigrist, José Oberholzer, Alain Bohbot, Guy Esposito, Karim Mandes, Roger Lamartine, Christian Toso, Pascal Bucher, Michel Pinget, Laurence Kessler
Immunology, 2004, 111 (4), pp.416-421. ⟨10.1111/j.1365-2567.2004.01828.x⟩
Article dans une revueAbstractDuring transplantation, pancreatic islets release chemokines which promote macrophage attraction, hampering engraftment of islets. The aim of this study was to modulate chemotaxis and the immune response of human macrophages induced by islets. Human monocyte-derived macrophages of healthy subjects were exposed to supernatants of human islets. Chemotaxis, tumour necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta) release were evaluated. To modulate migration, human macrophages were incubated in the presence of aminooxypentane-regulated on activation, normal, T-cell expressed, and secreted (AOP-RANTES), a potent antagonist of CCR5. Chemotactic activity of islets supernatant was modulated by the addition of heparin or heparinoids [pentosan and calix[8S]arene (C8S)]. AOP-RANTES significantly reduced, in a dose-dependent manner, macrophage chemotaxis and cytokine release induced by islets supernatant. The chemotactic index was reduced from 3.05 +/- 0.27 to 0.71 +/- 12, TNF-alpha from 1205 +/- 52 to 202 +/- 12 pg/ml, and IL-1beta from 234 +/- 12 to 10 +/- 6 pg/ml. The trapping of chemokines by heparinoids reduced the chemotactic activity of islets supernatant from 3.05 +/- 0.27 to 1.2 +/- 0.1 with heparin or pentosan and to 1.72 +/- 0.22 with C8S, and also decreased the TNF-alpha release by human macrophages from 1205 +/- 35 to 1000 +/- 26 (C8S), 250 +/- 21 (heparin) and 320 +/- 19 (pentosan) pg/ml, and IL-1beta from 234 +/- 13 to 151 +/- 5 (C8S), 50 +/- 3 (heparin) and 57 +/- 4 (pentosan) pg/ml. In conclusion, AOP-RANTES and heparinoids inhibit human macrophage activation and migration induced by islets supernatant.
Adenine triphosphate nucleotides are antagonists at the P2Y receptor
Gilles Kauffenstein, Beatrice Hechler, Jean-Pierre Cazenave, Christian Gachet
Journal of Thrombosis and Haemostasis, 2004, 2 (11), pp.1980-1988. ⟨10.1111/j.1538-7836.2004.00926.x⟩
Article dans une revueAbstractThe aim of the present study was to characterize the pharmacological profile of the P2Y(12) receptor for several adenine triphosphate nucleotides in view of their possible roles as partial agonists or true antagonists. Two distinct cellular systems were used: P2Y(1) receptor deficient mouse platelets ( platelets) previously shown to express a native and functional P2Y(12) receptor and 1321 N1 astrocytoma cells stably expressing the human P2Y(12) receptor (1321 N1 P2Y(12)). ADP and its structural analogues inhibited cAMP accumulation in a dose-dependent manner in both platelets and 1321 N1 P2Y(12) cells with a similar rank order of potency, 2 methylthio-ADP (2MeSADP) >>ADP - Adenosine 5'-(betathio) diphosphate (AlphaDPbetaS). Commercial ATP, 2 chloro; ATP (2ClATP) and 2 methylthio-ATP (2MeSATP) also inhibited cAMP accumulation in both cell systems. In contrast, after creatine phosphate (CP)/creatine phosphokinase (CPK) regeneration, adenine triphosphate nucleotides lost their agonistic effect on platelets and behaved as antagonists of ADP (0.5 microm)-induced adenylyl cyclase inhibition with IC(50) of 13.5 +/- 4.8, 838 +/- 610, 1280 +/- 1246 microm for 2MeSATP, ATP and 2ClATP, respectively. In 1321 N1 P2Y(12) cells, CP/CPK regenerated ATP and 2ClATP lost their agonistic effect only when CP/CPK was maintained during the cAMP assay. The stable ATP analogue ATPgammaS antagonized ADPbetaS-induced inhibition of cAMP accumulation in both platelets and 1321 N1 P2Y(12) cells. Thus, ATP and its triphosphate analogues are not agonists but rather antagonists at the P2Y(12) receptor expressed in platelets or transfected cells, provided care is taken to remove diphosphate contaminants and to prevent the generation of diphosphate nucleotide derivatives by cell ectonucleotidases.
Red wine polyphenolic compounds inhibit vascular endothelial growth factor expression in vascular smooth muscle cells by preventing the activation of the p38 mitogen-activated protein kinase pathway.
Min Ho Oak, Marta Chataigneau, Therese Keravis, Thierry Chataigneau, Alain Beretz, Ramaroson Andriantsitohaina, Jean-Claude Stoclet, Soon Jae Chang, Valerie Schini-Kerth
Arteriosclerosis, Thrombosis, and Vascular Biology, 2003, ⟨10.1161/01.atv.0000070101.70534.38⟩
Article dans une revueSurface treatment of polycarbonate films aimed at biomedical application.
Laurence Kessler, Gilbert Legeay, Arnaud Coudreuse, Patrick Bertrand, Claude Poleunus, Xavier Vanden Eynde, Karim Mandes, Pierro Marchetti, Michel Pinget, Alain Belcourt
Journal of Biomaterials Science, Polymer Edition, 2003, 14 (10), ⟨10.1163/156856203769231619⟩
Article dans une revueAbstractAiming to encapsulate pancreatic islets, a biocompatible polycarbonate membrane (Whatman) was treated with plasma argon in order to improve its surface properties. The argon plasma treatment decreased the hydrophobicity of the membrane by fixing polyvinylpyrrolidone (PVP) at the surface. The water angle contact decreased from 47 degrees to 20 degrees after this treatment, while the structure and pore diameter were preserved. The treatment also increased significantly the water permeability from 62 +/- 8 ml/min to 200 +/- 29 ml/min (P < 0.001). ToF-SIMS analyses revealed that the argon plasma treatment of the membrane allowed the installation of an uniform PVP layer at the surface. The concentration equilibrum in glucose was reached after 8 h diffusion for the treated membrane, while it was only 32.4 +/- 8.6% (P < 0.01) for the untreated membrane. The biocompatibility of the polycarbonate membrane was assessed after one month of implantation in rats and proved to be unaffected by the surface treatment. In conclusion, the present study provided sufficient information to establish a relationship between the physicochemical modifications of the PVP-plasma-treated polycarbonate membrane and the improvement in its permeability.
The Glucocorticoid Receptor Cooperates With the Erythropoietin Receptor and c-Kit to Enhance and Sustain Proliferation of Erythroid Progenitors In Vitro
Marieke von Lindern, Wolfgang Zauner, Georg Mellitzer, Peter Steinlein, Gerhard Fritsch, Klaus Huber, Bob Löwenberg, Hartmut Beug
Blood, 1999, 94 (2), pp.550-559
Article dans une revueAbstract<div><p>Although erythropoietin (Epo) is essential for the production of mature red blood cells, the cooperation w ith other factors is required for a proper balance betw een progenitor proliferation and differentiation. In avian erythroid progenitors, steroid hormones cooperate w ith tyrosine kinase receptors to induce renew al of erythroid progenitors. We examined the role of corticosteroids in the in vitro expansion of primary human erythroid cells in liquid cultures and colony assays. Dexamethasone (Dex), a synthetic glucocorticoid hormone, cooperated w ith Epo and stem cell factor to induce erythroid progenitors to undergo 15 to 22 cell divisions, corresponding to a 10 5 -to 10 6 -fold amplification of erythroid cells. Dex acted directly on erythroid progenitors and maintained the colonyforming capacity of the progenitor cells expanded in liquid cultures. The hormone delayed terminal differentiation into erythrocytes, w hich w as assayed by morphology, hemoglobin accumulation, and the expression of genes characteristic for immature cells. Sustained proliferation of erythroid progenitors could be induced equally w ell from purified erythroid burst-forming units (BFU-E), from CD34 ؉ blast cells, and from bone marrow depleted from CD34 ؉ cells.</p></div>
Another link between phospholipid transmembrane migration and ABC transporter gene family, inferred from a rare inherited disorder of phosphatidylserine externalization
Florence Toti, Véronique Schindler, Jean-François Riou, Gaël Lombard-Platet, Edith Fressinaud, Dominique Meyer, André Uzan, Jean-Bernard Le Pecq, Jean-Louis Mandel, Jean-Marie Freyssinet
Biochemical and Biophysical Research Communications, 1997, 241 (2), pp.548-552. ⟨10.1006/bbrc.1997.7836⟩
Article dans une revueAbstractThe mechanisms involved in the maintenance or loss of the asymmetric distribution of phospholipids in the cell plasma membrane remain mysterious. In the yeast Saccharomyces cerevisiae, the transmembrane migration of certain phospholipids is controlled by transcription regulators of various ATP-binding cassette (ABC) transporters. The P-glycoprotein membrane transporters encoded by the multidrug resistance (MDR) genes, members of the ABC protein family, act as lipid translocases in mammalian cells. We report here the lack of expression of MDR genes in lymphoblasts derived from the B cells of a patient with an inherited Scott syndrome, characterized by impaired transmembrane migration of procoagulant phosphatidylserine and hemorrhagic complications. From microsatellite analysis of 7q21.1 and functional assessment, the most likely explanation accounting for Scott phenotype is a mutation in an unlinked gene coding for a regulatory protein necessary for the expression of MDR genes. Because phosphatidylserine externalization is also one of the hallmarks of cells undergoing apoptosis, these observations are suggestive of a relationship between basic processes such as multidrug transport, apoptosis and procoagulant phospholipid exposure.
Endothelial cell seeding: coating Dacron and expanded polytetrafluoroethylene vascular grafts with a biological glue allows adhesion and growth of human saphenous vein endothelial cells.
Jean-Philippe Mazzucotelli, C Klein-Soyer, Alain Beretz, C Brisson, Gisele Haan-Archipoff, Jean-Pierre Cazenave
The International Journal of Artificial Organs, 1991, 14 (8), pp.482-490
Article dans une revueAbstractThe establishment of an endothelial lining on vascular grafts to obtain a highly thromboresistant surface in a clinical situation requires optimization of cell collection, quality, adhesion and growth. We have studied the conditions for collection, seeding and growth of human saphenous vein endothelial cells (HSVEC), on Dacron or Gore-Tex expanded polytetrafluoroethylene (PTFE) vascular grafts. Carefully handled veins, as opposed to veins obtained using the usual procedures for coronary bypass graft preparation, yielded a higher rate of successful culture (94% vs 43%) and reached confluence in primary culture sooner (9.4 +/- 3 days vs 13.4 +/- 4.5 days). HSVEC were seeded at a density of 6 x 10(3) cells/cm2 on graft fragments coated with fibronectin (FN) or Transglutine (TGL), a biological glue. There was no HSVEC adhesion on Dacron or PTFE without protein pretreatment of the artificial surface. FN improved HSVEC adhesion but there was no cell growth. Adhesion, doubling time and cell density at confluence on PTFE pretreated with TGL were similar to those on conventional tissue culture polystyrene (TCP) pretreated with TGL or FN. HSVEC adhesion on Dacron pretreated with TGL was lower than on TCP pretreated with TGL; the doubling time was similar but the density at confluence was 40% lower. We conclude that pretreatment of vascular grafts with TGL, besides being an alternative to preclotting of the Dacron graft, allows adhesion and growth to confluence of HSVEC on these surfaces.
- Autre publication scientifique
Dilemmes éthiques face à la pandémie du COVID 19
Guy Freys, Anne Danion, Mic Erohubie, François Clauss
2020, pp.1-3
Autre publication scientifiqueOut of the ICU shifting as a significant workload
Hamid Merdji, Raphaël Clere-Jehl, Auguste Dargent, Pascal Andreu, Audrey Large, Fabrice Lefebvre, Maleka Schenck, Julie Helms, Jean-Pierre Quenot, Ferhat Meziani
2018, ⟨10.1007/s00134-018-5240-7⟩
Autre publication scientifique- Brevet
Prokineticin 1 receptor agonists and their uses
Laurent Desaubry, Gunsel Canan Desaubry, Mounia Boulberdaa, Michel Kindo, Andrea Tafi, Simone Brogi, Kyoji Urayama, Nigel Ribeiro
France, Patent n° : WO2012/084999. 2012
BrevetAbstractThe present invention discloses non peptide prokineticin 1 receptor agonists and their uses for the treatment of PKRl mediated disorders, in particular for the treatment of vascular diseases, neurodegenerative diseases, diseases involving impaired gastrointestinal motility, obesity, Kallmann syndrome, normosmic hypogonadotropic hypogonadism and disturbances of circadian rhythm, and to prevent or limit the toxicity, in particular the cardiotoxicity and neurotoxicity, of drugs. The present invention also discloses a prokineticin receptor-1 agonist for use for promoting the differentiation of cardial epicardin+ progenitor cells into cardiomyocytes in a subject affected with a cardiac disease and/or the differentiation of renal epicardin+ progenitor cells into vasculogenic and/or glomerular cells in a subject affected with a renal disease. The present invention further discloses a prokineticin receptor-1 agonist for use for treating or preventing insulin resistance, in particular associated with type II diabetes. La présente invention concerne des agonistes de récepteur de prokinéticine 1 non peptidiques et leurs utilisations pour le traitement de troubles médiés par PKR1, en particulier pour le traitement de maladies vasculaires, de maladies neurodégénératives, de maladies impliquant une motilité gastro-intestinale altérée, l'obésité, le syndrome de Kallmann, l'hypogonadisme hypogonadotrope normosmique et des troubles du rythme circadien, et pour prévenir ou limiter la toxicité, en particulier la cardiotoxicité et la neurotoxicité, de médicaments. La présente invention concerne en outre un agoniste de récepteur de prokinéticine 1 pour utilisation pour stimuler la différenciation de cellules progénitrices épicardine+ cardiaques en cardiomyocytes chez un sujet atteint d'une maladie cardiaque et/ou la différenciation de cellules progénitrices épicardine+ rénales en cellules angiogènes et/ou glomérulaires chez un sujet atteint d'une maladie rénale. La présente invention concerne en outre un agoniste de récepteur de prokinéticine 1 pour utilisation pour traiter ou prévenir l'insulinorésistance, en particulier associée au diabète de type II.
- Chapitre d'ouvrage
Natural Products to Promote Vascular Health
Valérie Schini-Kerth, Ibrahima Diouf, Hira Muzammel, Said Amissi, Cyril Auger
Natural Products as Sources of Novel Drugs, Springer Berlin Heidelberg, 2024, Handbook of Experimental Pharmacology, 978-3-031-80293-5. ⟨10.1007/164_2024_721⟩
Chapitre d'ouvrageAbstractMaintaining a good vascular health is a major component in healthy ageing as it reduces the risk of cardiovascular diseases. Endothelial dysfunction, in particular, is a key mechanism in the development of major cardiovascular diseases including hypertension, atherosclerosis and diabetes. Recently, endothelial senescence has emerged as a pivotal early event in the agerelated endothelial dysfunction. Endothelial function is characterized by an imbalance between the endothelial formation of vasoprotective mechanisms, including the formation of nitric oxide (NO) and endothelium-dependent hyperpolarization, and an increased level of oxidative stress involving several pro-oxidant enzymes such as NADPH oxidase and, often also, the appearance of cyclooxygenase-derived vasoconstrictors. Pre-clinical studies have indicated that natural products, in particular polyphenol-rich foods, can trigger activating pathways in endothelial cells promoting an increased formation of NO and endotheliumdependent hyperpolarization. In addition, some can even exert beneficial effects on the endothelial senescence. Moreover, some of these products have been associated with the prevention and/or the improvement of an established endothelial dysfunction in several experimental models of cardiovascular diseases and in Humans with cardiovascular diseases. Therefore, intake of certain natural products, such as dietary and plant-derived polyphenolrich products, appears to be an attractive approach for a healthy vascular system in agein
Control of Inflammation by a Thermosensitive Lovastatin-Loaded Hydrogel
Catherine Petit, Fareeha Batool, Louise Jacob, Nadia Benkirane-Jessel, Olivier Huck
Stem Cells and Regenerative Medicine, 80, IOS Press, pp.150-157, 2021, Biomedical and Health Research, 978-1-64368-027-9. ⟨10.3233/BHR210024⟩
Chapitre d'ouvrageAbstractObjectives: Statins have been proposed as interesting pharmacological treatment for periodontal diseases because of their pleiotropic effect. Statins modulate bone metabolism, immuno-inflammatory complex and bacterial clearance. However, their systemic administration is associated to side effects. Therefore, their local administration has been suggested. The aim of this study was to evaluate the potential pro-regenerative effects of a thermosensitive gel functionalized by lovastatin on Porphyromonas gingivalis elicited inflammation in vitro and bone regeneration in vivo. Methods: Physical and chemical properties of a thermosensitive lovastatin loaded chitosan gel were evaluated. The anti-inflammatory effect of lovastatin was assessed in vitro by RT-qPCR and Elisa. In vivo, a model of calvarial defect was used to confirm the pro-regenerative effect on periodontal wound healing. Results: In vitro, lovastatin was able to decrease TNF-α secretion in P.gingivalis stimulated cells (p<0.05). In vivo, local application of chitosan gel functionalized with lovastatin improved wound healing at calvarial site in comparison with untreated controls and mice treated with systemic statin administration. Conclusions: This study demonstrates the potential regenerative effects of local application of a thermosensitive gel functionalized by lovastatin.
Intelligent Implants for Osteoarthritis Injuries and Cartilage Regeneration
Guoqiang Hua, Henri Favreau, Dominique Scipioni, Nadia Benkirane-Jessel
Stem Cells and Regenerative Medicine, IOS Press, 2021, Biomedical and Health Research, 978-1-64368-027-9. ⟨10.3233/BHR210017⟩
Chapitre d'ouvragePolycaprolactone Based Biomaterials and Sodium Hyaluronate Nanoreservoirs for Cartilage Regeneration
Rana Smaida, Henri Favreau, Moustafa Naja, Guoqiang Hua, Florence Fioretti, Nadia Benkirane-Jessel, Dominique Scipioni, Sabine Kuchler-Bopp
Stem Cells and Regenerative Medicine, IOS Press, 2021, Biomedical and Health Research, 978-1-64368-027-9. ⟨10.3233/BHR210018⟩
Chapitre d'ouvrageInterests of Exosomes in Bone and Periodontal Regeneration: A Systematic Review
Pierre-Yves Gegout, Céline Stutz, Jessica Olson, Fareeha Batool, Catherine Petit, Henri Tenenbaum, Nadia Benkirane-Jessel, Olivier Huck
Cell Biology and Translational Medicine, Volume 13, 1341, Springer International Publishing, pp.67-87, 2020, Advances in Experimental Medicine and Biology, ⟨10.1007/5584_2020_593⟩
Chapitre d'ouvrageLes progrès de l’échographie et du diagnostic prénatal. Réflexions éthiques autour de la découverte des fentes faciales en France
Bruno Grollemund, Anne Danion, Talitha Guittin, Marie Thiel
La vulnérabilité au prisme du monde technologique. Enjeux éthiques, Presses Universitaires de Strasbourg, pp.151-164, 2020, Chemins d'éthiques, 978-2-86820-752-4
Chapitre d'ouvrageChest wall disorders
Pierre Emmanuel Falcoz, Nicola Santelmo, Anne Olland, Gilbert Massard
ERS Handbook of Respiratory Medicine, 3, European Respiratory Society, 2019, ⟨10.1183/9781849840798.012218⟩
Chapitre d'ouvrageInnovative Strategies Targeting the Neovascularization of Solid Tumor
Jean-Christophe Lutz, Ezzeddine Harmouch, Gabriel Fernandez de Grado, Joseph Seitlinger, S. Bouhout, Fabien Bornert, Jean-François Stoltz, Ysia Idoux-Gillet, Nadia Benkirane-Jessel, Florence Fioretti
Stem Cells and Regenerative Medicine, 79, IOS Press, pp.163-173, 2019, Biomedical and Health Research, 978-1-61499-924-9. ⟨10.3233/BHR190036⟩
Chapitre d'ouvrageLung Tumor Patient Derived Organoids Including Vasculature and Mesenchymal Stem Cells as a New Tool for Personalized Medicine
Joseph Seitlinger, Hassan Chaddad, Véronique Lindner, R. Akasov, E. Markvicheva, Marie-Pierre Chenard, Anne Olland, Pierre-Emanuel Falcoz, Gilbert Massard, Nadia Benkirane-Jessel, Ysia Idoux-Gillet
Stem Cells and Regenerative Medicine, 79 (131-138), IOS Press, 2019, Biomedical and Health Research, 978-1-61499-924-9. ⟨10.3233/BHR190032⟩
Chapitre d'ouvrageSurgery as a treatment
Anne Olland, Pierre-Emmanuel Falcoz, Sophie Guinard, Joseph Seitlinger, Gilbert Massard
Giovanni Battista Migliori; G Bothamley; R Duarte; A Rendon; R Bals. TUBERCULOSIS, 82, Churchill Livingstone, pp.228-233, 2018, 2312-508X
Chapitre d'ouvrageAbstractTo date, well conducted chemotherapy will cure up to 85% of all pulmonary TB cases. In this vast majority of patients, surgery will be limited to a diagnostic tool. Video-assisted thoracic surgery and other elective mini-invasive approaches (mediastinoscopy) will help biopsy small lung nodules and/or diseased lymph nodes. But, in the case of MDR-/XDR-TB patients, anatomical lung resections (lobectomy and pneumonectomy) will help eradicate tuberculous cavitations still hosting mycobacterias, despite well-conducted chemotherapy. The strategy for lung resection in MDR-/XDR-TB patients will be determined by a multidisciplinary team taking into account the medical history of the patient, comorbidities, the recent history and evolution of the TB under appropriate chemotherapy, and a complete pre-operative work up of the patient, including nutritional status, and respiratory and cardiovascular functional status. High rates of favourable outcomes (over 90%) have been described provided surgery was applied during the first year of newly diagnosed MDR-/ XDR-TB. In the meantime, reporting results of collapse therapy ( pneumothorax/ pneumoperitoneum) during the first year of a newly diagnosed destructive TB, studies demonstrate clinical recovery in 93.9% of patients. Surgery provides excellent results for curing MDR-/XDR-TB insisting on the need for performing surgery following the actual guidelines, and during the first year of TB diagnose without neglecting the true efficiency of collapse therapy despite its old-fashioned appearance.
Obesity Peptide: Prokineticin
Canan Nebigil-Désaubry
Jan Gordeladze. Adiposity. Omics and Molecular Understanding, Chapter 6, InTechOpen, pp.115-125, 2017, 978-953-51-2998-1. ⟨10.5772/65701⟩
Chapitre d'ouvrageAbstractObesity confers an increased risk for cardiovascular renal diseases, diabetes mellitus, nonalcoholic steatohepatitis, musculoskeletal disorders, and cancers. Prokineticin‐2 is a peptide hormone, which exists as both a circulating hormone system and a local paracrine‐signaling mechanism within various tissues including the brain, kidney, and adipose. It acts on the G‐protein‐coupled receptors (GPCRs) PKR1 and PKR2. The role of prokineticin‐2 in the central nervous system is the control of food intake. Its anorexigenic efect is at least partly through the hypothalamic melanocortin system. Prokineticin‐2 also prevents adipose tissue expansion by limiting preadipocyte proliferation and diferentiation capacity. Prokineticin‐2 signaling is important for insulin capillary passages. It also regulates heart and kidney development and function. Here, we discuss a new obesity peptide prokineticin signaling in central regulation of food intake, adipocyte tissue development, and cardiovascular function. Prokineticin may play a key role in the association between obesity and cardiovascular diseases. We also outline the potential of prokineticin receptor‐1 as target for the treatment of obesity and cardiovascular diseases.
Quantitative platelet aggregation in vitro
Jean-Pierre Cazenave, J Mulvihill, A Sutter-Bay, Christian Gachet, Florence Toti, Alain Beretz
S Dawids. Test Procedures for the Blood Compatibility of Biomaterials, Springer, pp.359-375, 1993, 978-0-7923-2107-1
Chapitre d'ouvrage- Communication dans un congrès
Blood biomarkers of muscle atrophy correlate with muscle proteolytic system activation
Coralie Delabrise, Julien Aniort, Agnès Claustre, Benjamin Gibert, Thomas Walter, Lydie Combaret, Cécile Polge, Anne-Elisabeth Heng, Daniel Taillandier
XIII-ZOMES and 11th Proteasome joint meeting, Apr 2026, Montpellier, France
Communication dans un congrèsAbstractA feature of several diseases is a catabolic state leading to muscle wasting and muscle weakness. Muscle loss negatively impacts treatment and life prognosis of patients. The ubiquitin proteasome system and autophagy are major players of skeletal muscle wasting and several atrophy-related genes (atrogenes) belong to these proteolytic systems (1). Accordingly, the expression of numerous proteins (including atrogenes) is concomitantly modified in atrophying muscles independently of the causal disease (2). A major goal in clinical routine is to detect early activation of proteolysis for using counter measures (exercise, drugs, etc). While several atrogenes are considered as the gold standard for detecting the onset of muscle atrophy, routine biopsies are not possible in clinical practice, hence the need for poorly invasive strategies. Using several cohorts of patients suffering from chronic kidney disease (CKD) or cancer (lung, abdominal), we found a set of 13 blood biomarkers (GOI) highly correlated to muscle proteomics modifications of atrophying muscles and to the expression of several atrogenes (MuRF1, MAFbx, etc). The 3 top GOI are also expressed in muscles, and their expression is modified concomitantly to MuRF1 and MAFbx in cultured cells submitted to catabolic situations. Finally, the GOI are exported by muscle cells in extracellular vesicles.
Blood biomarkers of muscle atrophy correlate with muscle proteolytic system activation
Daniel Taillandier, Coralie Delabrise, Julien Aniort, Agnès Claustre, Benjamin Gibert, Thomas Walter, Lydie Combaret, Cécile Polge, Anne-Elisabeth Heng
Enzymes, Proteolysis & Metabolism at the crossroads of Biochemistry, Société Française de Biochimie et Biologie Moléculaire (SFBBM), Dec 2025, Paris Cité, France
Communication dans un congrèsAbstractA feature of several diseases is a catabolic state leading to muscle wasting and muscle weakness. Muscle loss negatively impacts treatment and life prognosis of patients. The ubiquitin proteasome system and autophagy are major players of skeletal muscle wasting and several atrophy-related genes (atrogenes) belong to these proteolytic systems (1). Accordingly, the expression of numerous proteins (including atrogenes) is concomitantly modified in atrophying muscles independently of the causal disease (2). A major goal in clinical routine is to detect early activation of proteolysis for using counter measures (exercise, drugs, etc). While several atrogenes are considered as the gold standard for detecting the onset of muscle atrophy, routine biopsies are not possible in clinical practice, hence the need for poorly invasive strategies. Using several cohorts of patients suffering from chronic kidney disease (CKD) or cancer (lung, abdominal), we found a set of 13 blood biomarkers (GOI) highly correlated to muscle proteomics modifications of atrophying muscles and to the expression of several atrogenes (MuRF1, MAFbx, etc). The 3 top GOI are also expressed in muscles, and their expression is modified concomitantly to MuRF1 and MAFbx in cultured cells submitted to catabolic situations. Finally, the GOI are exported by muscle cells in extracellular vesicles.
#1152 Pharmacokinetics, pharmacodynamics and safety of TIN816 in patients with sepsis-associated acute kidney injury: results from a randomized Phase 2a study
Julien Demiselle, Nicolas de Schryver, Stanislas Faguer, Tom Fivez, Patrick Murray, Matthew Rowland, Claudio Calonder, Marie-Anne Valentin, Cong Zhang, Ghionul Ibram
62nd ERA Congress, Jun 2025, Vienna, Austria. pp.1152, ⟨10.1093/ndt/gfaf116.127⟩
Communication dans un congrèsAbstractAbstract Background and Aims Sepsis-associated acute kidney injury (SA-AKI) is a common complication in critically ill patients (pts) with sepsis. This study assessed the pharmacokinetic (PK), pharmacodynamics (PD), and safety of TIN816, a recombinant CD39 enzyme, in pts with SA-AKI, providing supporting information for the subsequent Phase 2b study. Method This multicenter double-blinded, randomized, placebo (PBO)-controlled study included pts aged ≥18 and ≤85 years with SA-AKI on the ICU randomized to an intravenous infusion (IV) dose of nominally 2.0 mg/kg TIN816 or PBO with follow up to Day (D) 90. Primary objective: assess TIN816 PK parameters such as maximum observed serum drug concentration (Cmax), the time to reach Cmax (Tmax), area under curve from time zero to infinity (AUC0-∞), volume of distribution (Vss), clearance (CL) and terminal half-life (T1/2). Quantification of TIN816 in urine was used to estimate renal CL. Secondary objective: assess TIN816 safety and tolerability. Key exploratory objectives: evaluate TIN816’s pathway engagement vs PBO by evaluating changes from baseline (BL) in biomarkers (adenosine diphosphate [ADP], adenosine, interleukin [IL]-1β) in blood and urine. PK and safety profile up to D90 and PD results from D1 to D14, are presented here. Results Twenty pts were randomized to receive TIN816 (n = 16) or PBO (n = 4). At screening, all pts presented with a sequential organ failure assessment score ≥2 (excluding renal component). The median (min–max) serum creatinine level (µmol/L) was 204.16 (106.30–418.00) in TIN816 vs 184.76 (119.34–393.00) in PBO; 75.0% and 100% of pts had septic shock and 81% and 75% of pts had stage 2/3 AKI in the TIN816 and PBO arms, respectively. The median (min–max) acute physiology and chronic health evaluation II score 19.0 (10.0–37.0) in TIN816 arm and 10.5 (8.0–15.0) in PBO arm. TIN816 reached Cmax at the end of IV infusion. Variability in dosing administration in eight pts (actual doses ranging from 1.0 to 3.5 mg/kg), led to measured exposure variation between pts: Cmax 22.5–80.1 µg/mL and AUC0-∞ 49.8–280 days х µg/mL. However, inter-patient variability of dose-normalized Cmax and AUC0-∞ were moderate (coefficient of variations of 24.0% and 25.2%, respectively; Fig. 1). CL in SA-AKI pts varied between 0.0124 and 0.0275 L/day/kg and Vss between 0.0446 and 0.141 L/kg. This resulted in an apparent median (min–max) T1/2 of 6.0 (4.61–6.78) days. Urinary elimination of unchanged drug contributed to approximately 0.5% of total TIN816 clearance. IL-1β plasma levels were similar at BL in both arms, but in the TIN816 arm, there was a more pronounced geo-mean % reduction from BL by D2 and D3 (84% at D3) compared to PBO (67% at D3), followed by a gradual increase until D14 (56% TIN816 vs 43% PBO; Fig. 2). In urine, ADP levels normalized with creatinine showed a % reduction in both arms from BL by D3 (85% TIN816, 83% PBO), followed by an increasing trend from D5. In the TIN816 arm, urine levels of adenosine normalized with creatinine increased from D3, reaching a maximum at D8 (geo-mean increase from BL 144%). A comparable pattern was observed in the PBO arm over time (geo-mean increase of 70% at D8). The incidence of treatment-emergent AEs was comparable between arms (87.5% TIN816 vs 100.0% PBO). Three bleeding events were reported in the TIN816 arm, none were related to the study drug. All pts in both arms were anti-drug antibody (ADA) negative. No notable differences reported in transaminase, bilirubin, hemoglobin levels, and platelet count between TIN816 and PBO arms. Conclusion The PK profile of TIN816 supports the dosing strategy in the ongoing Phase 2b study considering the low-to-moderate inter-patient exposure variability. A decrease in plasma IL-1β and urine ADP levels, and an increase in urine adenosine levels was seen in both groups, with a greater magnitude of effect in TIN816 arm. Although this potentially support the pathway engagement for TIN816, the small sample size, changes observed in the PBO arm and large variability between and within group limited the interpretation of the biomarker results. Single IV dose of TIN816 demonstrated good safety profile and was well tolerated in pts with SA-AKI, without ADAs or observable safety risks.
Construction d'un référentiel de compétences par les enseignants-cliniciens : une approche collaborative pour un curriculum revisité
Marion Strub, Bérangère Cournault, Maxime Biard, Pierre- Yves Gegout, Florence Fioretti, Sophie Jung, Florent Meyer
Congrès International Francophone de Pédagogie des Sciences de la Santé, Société Internationale Francophone d'Education Médicale, May 2025, Orléans, France
Communication dans un congrèsAbstractContexte et problématique : Dans l’optique de déployer l’approche par compétences (APC) dans la formation initiale des étudiants en odontologie, la faculté de chirurgie dentaire de Strasbourg a misé sur une implication totale de l’équipe enseignante dans toutes les étapes du processus pour une meilleure adhésion au projet. Objectif : Co-construire un référentiel de compétences qui répond aux besoins et aux attentes d’une équipe pédagogique donnée pour une mise en œuvre à court terme à l’échelle d’une unité d’enseignement, d’un cycle puis d’un curriculum de formation. Méthode : Séminaire en grand groupe, ateliers et groupes de travail plus restreints ont permis la finalisation d’un référentiel de compétences, mais aussi une réflexion autour des situations d’apprentissage et d’évaluation couvrant l’ensemble du référentiel. La mise en œuvre, de la salle de cours jusqu’aux terrains de stage, était accompagnée d’une démarche d’évaluation des enseignements par les étudiants et d’échanges constants entre enseignants et étudiants grâce à des commissions pédagogiques dédiées. Résultats : Le référentiel se présente sous forme d’un document concis et didactique pour en faciliter la lecture et l’utilisation. Les compétences identifiées sont proches de celles des référentiels nationaux et internationaux existants. Il est construit autour de sept grandes compétences caractérisées par des activités, des situations professionnelles et la notion de progressivité dans les apprentissages. La mise en place de l’APC a pu générer des difficultés dans certaines unités d’enseignement, notamment de moins bons résultats lors des évaluations terminales. Conclusion : Le référentiel offre aux étudiants et aux enseignants une vision macroscopique du curriculum avec une articulation logique et progressive entre les deux cycles. Son contenu et les modalités de mise en œuvre ne sont pas remises en questions, que ce soit par le corps enseignant ou par les étudiants qui semblent y trouver du sens.
Genome-Wide Association Study of Chronic Lung Allograft Dysfunction
Simon Brocard, Martin Morin, Axelle Durand, Nayane dos Santos Brito Silva, Vincent Mauduit, Antoine Roux, Benjamin Coiffard, Xavier Demant, Benjamin Renaud Picard, Jérôme Le Pavec, Jean‐françois Mornex, Loïc Falque, Jonathan Messika, Veronique Boussaud, Pierre‐antoine Gourraud, Nicolas Vince, Mario Südholt, Adrien Tissot, Sophie Limou
International Congress Lung Transplantation 2024, Sep 2024, Paris, France
Communication dans un congrèsAbstractBackground: Chronic respiratory diseases are among the leading causes of morbidity and mortality worldwide with 3.3 million deaths each year. For patients with end-stage lung disease, the only viable option is lung transplantation (LT), but graft survival remains limited with only 63% survival at 5 years post-transplantation. The greatest limitation to long-term survival is the development of chronic lung allograft dysfunction (CLAD) which affects arounds 50% of recipients after 5 years. There is an essential need for better understanding the molecular mechanisms involved in the CLAD phenotype’s pathophysiology. Methods: We performed the first genome-wide association study GWAS investigating genetic factors associated with CLAD. CLAD is defined by a >=20% decline in measured forced expiratory volume from the baseline level (3 months after transplant in the absence of infection or another identifiable cause). We genotyped a subset of 392 LT donor-recipient pairs from the COLT multicentric cohort (Cohort in Lung Transplantation) using the Affymetrix Axiom PRMA microarray (900,000 SNPs). Our genetic cohort represents an accurate snapshot of the entire COLT cohort as no variable (e.g. age, sex, initial respiratory disease, survival rate) significantly diverged from the global cohort (p>0.05). After quality controls and SNP imputation, we tested 7 million SNPs for association with CLAD using multivariate logistic regression models corrected for age, sex and genetic ancestry. Results: We did not observe any significant association between the donors’ genotypes and the CLAD development. However, we tested 54 CLAD (BOS=34, RAS=9 and mixte=11) against 160 stable recipients and we identified four SNPs significantly associated with CLAD in European recipients (p<5x10-8). Interestingly, we found a signal in a gene encoding a protein previously associated with the risk for bronchopulmonary dysplasia. Recipients with CLAD exhibited a lower allelic frequency (34%) for this genetic locus than recipients without CLAD (66%), suggesting a protective role for this allele against the development of CLAD. Conclusions: Here, we unveiled the first GWAS conducted in lung transplantation, displaying biologically relevant results from the recipient’s genome. We will next jointly investigate the donor and recipient’s genomes to assess HLA and non-HLA mismatches that might contribute to CLAD. Further investigations into the functional implications of these genetic variants could provide valuable insights into pathogenesis and potential therapeutic targets for CLAD.
Effect of islets transplantation on the incidence of diabetic complications and mortality in patients with unstable type 1 diabetes
Sandrine Lablanche, Pierre-Yves Benhamou, Thierry Berney, Eric Renard, Marie‐christine Vantyghem, Luc Rakotoarisoa, Ekaterine Berishvili, Mathieu Roustit, Bruno Guerci, François Pattou, Fanny Burron, Orianne Villard, Laurence Kessler, Clément Jambon-Barbara, Quentin Perrier
European Association for the study of Diabetes, Sep 2024, Madrid, Spain
Communication dans un congrèsDéveloppement de consultations d’odontologie pédiatrique en réalité virtuelle auprès des étudiants : un outil pour préparer la transition de la préclinique vers la clinique
Marion Strub, François Clauss, Marie-Cécile Maniere
Congrès international francophone de pédagogie des sciences de la santé, SIFEM, Jun 2024, Marrakech, Maroc
Communication dans un congrèsAbstractIntroduction : La transition de la pré-clinique (2e et 3e années d’étude) vers la pratique clinique (à partir de la 4e année) est décrite comme une source de stress majeure pour les étudiants en odontologie. Lieu de stage inconnu, matériel disponible, fonctionnement des services, organisation des consultations, interrogations des patients, spécificités de chaque discipline clinique, sont autant de facteurs susceptibles de générer de l’anxiété. La simulation conventionnelle permet de (mieux) préparer les étudiants à cette transition mais présente certaines limites quant aux éléments cités précédemment. La simulation numérique haute-fidélité permet d’exposer l’étudiant à des situations cliniques dans un environnement identique à celui du futur lieu de stage, palliant ainsi les limites de la simulation conventionnelle. L’objectif de ce travail était de développer et d’implanter des consultations d’odontologie pédiatrique en réalité virtuelle (RV) pour préparer la transition des étudiants en odontologie vers la pratique clinique pédiatrique. Méthode : Le milieu de stage par lequel passent tous les étudiants en odontologie de l’Université de Strasbourg a été modélisé en trois dimensions. Plusieurs scénarios qui reflètent la pratique clinique des étudiants de 4e année ont été développé en RV. Des objectifs pédagogiques ont été définis pour chaque scénario. Un groupe d’étudiants (n=5) et d’enseignants (n=3) volontaires a testé une première version et leurs avis ont été recueillis . Résultats : Les testeurs pouvaient se déplacer dans l’environnement numérique et interagir avec les objets et les personnages. L’authenticité de l’environnement et des scénarios a été validé, tout comme la prise en main de l’outil. Les testeurs plébiscitaient la méthode. Discussion : Un temps d’apprentissage est nécessaire pour utiliser la RV et l’aisance avec l’outil numérique varie d’une personne à l’autre. Les séances d’entrainement seront disponibles pour les étudiants de 3e année dès la rentrée universitaire 2024. Une étude de l’effet de son utilisation sur le degré d’anxiété des étudiants lors des stages est prévue (comparaison avec un groupe ayant une présentation magistrale en amphithéâtre comme c’est le cas actuellement). Conclusion : La RV permet de simuler un vaste panel de situations cliniques dans un environnement réaliste. De futurs travaux permettront de mesurer l’impact de cet outil sur le stress des étudiants lors des premiers stage ou encore leur efficacité à remplir des tâches simples dès les premiers jours. C’est un outil qui pourrait être utile dans l’ensemble des formations de santé.
Évaluation de l'impact du nombre de séances de travaux pratiques sur les compétences en chirurgie parodontale des étudiants de deuxième cycle en odontologie.
Catherine Petit, Pierre-Yves Gegout, Olivier Huck
Congrès international francophone de pédagogie des sciences de la santé (CIFPSS) 2024, Société internationale francophone d'éducation médicale (SIFEM), Jun 2024, Marrakech, Maroc
Communication dans un congrèsAbstractIntroduction : Ce projet vise à étudier l'effet du nombre de séances de travaux pratiques sur les compétences en chirurgie parodontale des étudiants de premier cycle en odontologie. Matériels et méthodes : 58 étudiants en 5ème année d’odontologie ont été répartis en deux groupes (29 étudiants chacun) selon le nombre de travaux pratiques (TP) dispensés : groupe test, 4 séances de TP ; Groupe contrôle, 2 séances de TP. Après une présentation orale contenant des illustrations et des instructions cliniques et une démonstration en direct des procédures chirurgicales attendues, les étudiants ont été invités à réaliser des incisions, des dissections de lambeaux et des sutures sur des modèles de simulation parodontale haute-fidélité. A l’issue de la première et de la dernière session de TP, les compétences cliniques des étudiants ont été évaluées à l’aide d’un score de compétence technique modifié constitué de 8 critères d’évaluation adaptés à la chirurgie parodontale. Les étudiants ont également été invités à fournir leur avis de façon anonyme concernant les modèles anatomiques et les TP de chirurgie parodontale à l'aide d'un questionnaire. Résultats: L'ajout de 2 sessions de formation a amélioré les compétences chirurgicales globales des étudiants de premier cycle. Les étudiants du groupe test ont obtenu de meilleurs résultats concernant le respect de l’équilibre droite-gauche des sutures, l’espacement des sutures et le respect des tissus mous que le groupe témoin. De plus, 95% des étudiants ont déclaré avoir mieux compris les concepts théoriques de la chirurgie parodontale ainsi que l'utilisation pratique de chaque instrument chirurgical à la suite des TP. Conclusion : l’ajout de séances supplémentaires de TP de chirurgie parodontale ont amélioré les compétences chirurgicales des étudiants de premier cycle. La répétition et la pratique interactive favorisent la rétention des connaissances sur les compétences chirurgicales parodontales.
3D spheroid model of ATDC-5 cells using alginate-hyaluronic acid hydrogels
Mónica Paesa, Rana Smaida, Cristina Remírez de Ganuza, Manuel Arruebo, Nadia Benkirane-Jessel, Gracia Mendoza
2024 OARSI World Congress on Osteoarthritis, Apr 2024, Vienne, Austria. pp.S581-S582, ⟨10.1016/j.joca.2024.02.859⟩
Communication dans un congrèsAbstractPurpose (the aim of the study): ATDC-5 spheroids, derived from a mouse chondrogenic cell line, have become increasingly important in research related to chondrogenesis, cartilage tissue engineering, and regenerative medicine. These multicellular spheroids provide a versatile model for studying chondrocyte biology and cartilage development by more accurately mimicking 3D microenvironments. The use of hydrogels in 3D spheroid culture has advanced cell-based research by offering a biocompatible environment that facilitates the formation and growth of multicellular spheroids and bridges the gap between traditional 2D cell culture and the complex 3D tissue architecture. The goal of this study was to generate ATDC-5 spheroids within an alginate-hyaluronic acid hydrogel and investigate their characteristics under inflammatory conditions and chondrogenic differentiation, providing a potential model for testing new treatments for osteoarthritis. Methods: Chondrogenic ATDC-5 cells were cultured in a chondrogenic differentiation medium and then seeded into an alginate-hyaluronic acid hydrogel in 24 well-plates for up to 14 days. Negative control spheroids were cultured without the differentiation medium and hydrogel. Cell viability was assessed using a 10% AlamarBlue®/Dulbecco’s Modified Eagle’s Medium phenol red-free culture medium solution. To induce inflammation, the spheroids were treated with 250 ng/mL Lipopolysaccharide (LPS) for 24 hours, and nitric oxide (NO) release was measured as a marker of inflammation. Changes in extracellular matrix synthesis were evaluated using immunohistochemistry for aggrecan and histological staining for Hematoxylin-Eosin, Safranin O, and Alcian Blue. Results: The cytotoxicity assay of the 3D spheroids revealed that after 24 hours of treatment with LPS, more than 80% of the cells remained viable across all treatment groups. LPS significantly enhanced NO production in ATDC-5 spheroids, demonstrating a robust response to the inflammatory model. In terms of chondrogenic differentiation, aggrecan staining was pronounced in the spheroids cultured within the alginate-hyaluronic hydrogel at day 14, suggesting an increased synthesis of the extracellular matrix. These findings are consistent with Alcian Blue and Safranin O staining, which showed marked increases in sulphated glycosaminoglycans and proteoglycans, respectively, within the matrix at 14 days, compared to those at 7 days of differentiation or in spheroids without hydrogel. Conclusions: Alginate-hyaluronic acid hydrogel demonstrated their effectiveness in promoting the differentiation of ATDC-5 cells in a 3D environment. These hydrogels offered a supportive matrix that mimics the native extracellular matrix, fostering a more physiologically and pathologically relevant cell behaviour in order to promote the development of novel treatments for osteoarthritis.
Emulsions de Pickering stabilisées par des Nanoparticules Solides Lipidiques : Taux de couverture et comportement interfacial
Sidy Mouhamed Dieng, Ahmedou Bamba Kouemel Fall, Nicolas Anton, Patrick Bouriat, Oumar Thioune, Papa Mady Sy, Nadia Massaddeq, Moussa Diop, Mounibé Diarra, Thierry Vandamme
3ème congrès de la SOAPGI, Nov 2023, Abidjan, Côte d’Ivoire
Communication dans un congrèsAbstractIntroduction : Ces dernières années, le développement de biomatériaux à faible impact environnemental a attiré un intérêt croissant. Dans ce contexte, les nanoparticules lipidiques ont émergé comme une solution privilégiée dans la recherche et l'industrie. L'objectif de cette étude était de mettre au point des émulsions Pickering O/W stabilisées exclusivement par des nanoparticules lipidiques solides (SLNs). Ces émulsions de Pickering sont une nouvelle génération de transporteurs lipidiques, à la fois sûrs, non toxiques, biocompatibles et sensibles à la température. Matériel et Méthodes : La première partie de l'étude se concentre sur la compréhension du comportement interfacial des SLNs et les mécanismes de stabilisation associés aux nanoémulsions formulées par ultrasons. Les recherches ont exploré la couverture de surface en fonction des fractions volumiques des phases dispersées et de la taille des SLNs. La deuxième partie de l'étude aborde l'adsorption des SLNs à une interface modèle entre l'huile et l'eau, en évaluant la tension superficielle et la rhéologie. Cela a été réalisé au moyen d'une analyse de la forme d'une goutte axi-symétrique (à l'aide d'un tensiomètre de goutte), en suivant l'évolution de la tension interfaciale et du comportement rhéologique. Résultats : Ces expériences ont démontré de manière concluante que la stabilisation des nanogouttelettes est effectivement assurée par les nanoparticules, tout en mettant en lumière les limites de cette formulation. La caractérisation des dimensions et de la morphologie des émulsions a permis de confirmer nos hypothèses. Par ailleurs, nous avons procédé à la caractérisation du phénomène régissant les interactions entre les nanogouttelettes et l'interface, tout en décrivant le comportement rhéologique de la monocouche de SLNs à l'interface. Conclusion : En conclusion, les émulsions de Pickering stabilisées par les SLNs se révèlent être des nano-transporteurs de médicaments innovants et très efficaces. Elles ouvrent ainsi de nouvelles perspectives en tant que système de délivrance de médicaments sensible à la température.
Empagliflozin treatment does not affect the hypertensive response to Ang II administration to rats but decreases oxidative stress in the arterial wall, and endothelial and cardiac dysfunction
C Bruckert, L Remila, K Matsushita, C Auger, U Houngue, A Chaker, S Park, P Algara-Suarez, E Belcastro, L Jesel, P Ohlmann, O Morel, V Schini-Kerth
ESC Congress 2020 – The Digital Experience, Aug 2023, Online, Antarctica. ⟨10.1093/ehjci/ehaa946.3806⟩
Communication dans un congrèsAbstractBackground: Selective sodium-glucose cotransporter 2 (SGLT2) inhibitors have shown cardiovascular protection in type 2 diabetes patients with established cardiovascular disease independently of glycemic control. Angiotensin II (Ang II) and H2O2 have been shown to be strong inducers of the expression of SGLT2 and 1 in endothelial cells promoting oxidative stress and endothelial dysfunction. Purpose: This study examined the cardiovascular protective effect of empagliflozin (empa) in a normoglycemic experimental model of hypertension in the rat. Methods: Male Wistar rats received empa (30 mg/kg/day) provided in the diet for 5 weeks. After 1 week, rats underwent sham surgery (sham rats) or surgery with implantation of an osmotic mini-pump infusing Ang II (0.4 mg/kg/d) for 4 weeks. Systolic blood pressure (SBP) was assessed by sphygmomanometry, the cardiac function using echocardiography, the expression level of target proteins by immunofluorescence staining, and the level of oxidative stress using dihydroethidium staining. Results: Angiotensin II administration increased systolic blood pressure from about 130 to 180 mmHg, which was not affected by the empa treatment. The 4-week Ang II treatment did not significantly affect the systolic cardiac function (cardiac output, left ventricle ejection fraction) but impaired the diastolic function as indicated by a reduced E' and IVRT values, and an increased E/E' value. The Ang II treatment increased significantly the heart and right ventricle weight whereas the left ventricle + septum weight was slightly but not significantly increased. No such functional and structural changes were observed in the Ang II + empa treatment group. An increased immunofluorescence eNOS signal in the endothelium, and a higher level of ROS throughout the aorta wall were observed in the Ang II-treated group, both of which were significantly reduced in the empa + Ang II-treated group. In the Ang II-treated group, the high level of oxidative stress in the aorta was significantly reduced by the AT1 receptor antagonist losartan, the NADPH oxidase inhibitor VAS-2871, the eNOS inhibitor NG-nitro-L-arginine and also to a greater extent by the selective SGLT2 inhibitor empa compared to the dual SGLT1/2 inhibitor sotagliflozin. Conclusion(s): The present findings indicate that although the empa treatment did not affect the hypertensive response of rats to Ang II, the SGLT2 inhibitor prevented the deleterious impact of Ang II on the diastolic cardiac function and remodeling, and the upregulation of eNOS expression and oxidative stress in the aorta wall. Thus, these findings highlight the protective potential of empa on the cardiovascular system in a normoglycemic hypertensive experimental model. Funding Acknowledgement Type of funding source: Private company. Main funding source(s): Boehringer Ingelheim Pharma GmbH & Co KG (Biberach an der Riss, Germany)
SGLT2 expression in the left ventricle of cardiac patients is correlated with low-grade inflammation involving the pro-oxidant AT1R/NADPH oxidases/SGLT2 crosstalk: potential role in heart failure
A Mroueh, W Fakih, D Gong, C Auger, M P Pieper, O Morel, J. P. Mazzucotelli, V Schini-Kerth
European Society of Cardiology Congress 2023, Aug 2023, Amsterdam, Netherlands. ⟨10.1093/eurheartj/ehad655.3150⟩
Communication dans un congrèsAbstractIntroduction: Clinical studies showed that sodium-glucose co-transporter2 inhibitors (SGLT2i) have beneficial effects in heart failure patients regardless of ejection fraction and diabetes. Such cardiac diseases are often characterized by low-grade inflammation and impaired endothelial coronary microcirculation function. Recently, angiotensin II and TNF-α were shown to induce SGLT2 expression in endothelial cells (ECs) to sustain oxidative stress leading to endothelial dysfunction. However, the role and function of SGLT2 in the human left ventricle (LV) remain unclear. Therefore, this study evaluated the expression of SGLT2 in the LV of patients with cardiac diseases and, if so, determined the cellular localization, the underlying mechanism and the functional role. Methods: Human LV biopsies were collected from 20 patients subjected to valve surgery at the Nouvel Hôpital Civil, Strasbourg, France. Expression levels of targets were determined by RT-qPCR and Western blot analysis, the in situ tissue localization by immunofluorescence (IF) staining and oxidative stress by dihydroethidium staining. Results: RT-qPCR analysis of LV revealed variable SGLT1 and SGLT2 mRNA levels with no significant correlation. However, SGLT2 mRNA expression showed a positive correlation with those of pro-inflammatory markers (IL-1ß, IL-6, TNF-α, MCP-1 and CD68), AT1R, and VCAM-1. Western blot analysis confirmed the heterogenous SGLT2 protein expression level in LV with a difference up to 3.5-fold among the specimens. SGLT2 protein levels showed a positive correlation with markers of oxidative stress (phospho-p65 NF-κB, AT1R, nitrotyrosine) and markers of ECs activation (VCAM-1, ICAM-1), and a negative correlation with levels of eNOS. Further, immunofluorescence analysis of LV cryosections showed SGLT2 staining in the endothelium of the coronary microcirculation, as indicated by its co-localization with the endothelial cell marker CD31, and throughout the heart tissue. SGLT2 signals were also observed in areas showing IF signals for TNF-α, phospho-p65 NF-κB, CD68 and VCAM-1 suggesting that SGLT2 expression is localized to sites of inflammation. LV specimens with high SGLT2 protein levels showed elevated levels of oxidative stress, which were inhibited by N-acetylcysteine, VAS-2870, perindoprilat, losartan, empagliflozin, and infliximab. Conclusions: The findings indicate that endothelial and cardiac SGLT2 expression in the LV of cardiac patients is associated with low-grade inflammation and oxidative stress. They further indicate that the pro-inflammatory cytokines/AT1R/NAPDH oxidases/SGLT2 crosstalk contributes to sustain a pro-oxidant state. Thus, SGLT2 inhibitors might ameliorate HF by mitigating the low-grade inflammatory-related pro-oxidant state and, hence, preserve the crucial endothelial control of the cardiomyocyte function in the LV.
Human calcified aortic valves release procoagulant microparticles inducing endothelial dysfunction and thrombogenicity: Role of the AT1R/NADPH oxidases/SGLT2 pro-oxidant pathway
S Hmadeh, A Trimaille, K Matsushita, B Marchandot, F Zobairi, C Sato, M Kindo, T Minh Hoang, F Toti, M Pieper, V Schini Kerth, G Kauffenstein, O Morel
ESC Congress 2023, Aug 2023, Amsterdam, Netherlands. ⟨10.1093/eurheartj/ehad655.3202⟩
Communication dans un congrèsAbstractBackground: Aortic stenosis (AS) pathogenesis is a dynamic process with interplay between the hemostatic system and the valve leading to inflammation, oxidative stress, endothelial dysfunction, and calcification. Within the pathological valve, mechanical strain induces the release of cell-derived microparticles (MPs) that promote mineralization and carry a pro-oxidant activator signal. Sodium-glucose cotransporter 2 inhibitors (SGLT2i) showed cardiovascular benefit and anti-inflammatory responses in patients with heart failure. Oxidative stress has been shown to trigger SGLT2 expression in endothelial cells (ECs) to induce endothelial dysfunction. Therefore, this study evaluated calcified AS valves and the effect of AS-derived MPs on ECs and, if so, the role of the SGLT2. Methods: Pathological valves were collected from 90 AS and 15 aortic insufficiency (AI) patients. MPs were extracted from human pathological valves, and quantified through their prothrombinase activity. Primary cultures of porcine valvular endothelial cells (VECs) were treated with MPs (10 nM) or thrombin (1 U/ml). Protein expression levels were assessed by Western blot analysis and immunofluorescence staining, mRNA levels by RT-qPCR, oxidative stress using dihydroethidium, and nitric oxide (NO) generation by DAF-FM diacetate. THP1 cells were used to evaluate the adhesiveness of VECs, and the generation of thrombin using a specific chromogenic substrate. Results: Calcified AS valves showed increased levels of thrombogenic (TF, PAI-1), adhesive (VCAM-1, ICAM-1) and inflammatory markers (CD68, p-p65 NF-κB) and SGLT2 compared to non-calcified valves. These responses were associated with a higher level of oxidative stress that was reduced by inhibitors of the angiotensin system (ACEi, AT1R) and SGLT2, and an increased release of procoagulant MPs. Exposure of VECs to AS-MPs increased the expression of markers of the angiotensin system (ACE, p67 phox), inflammation (CXCL10, CCL11, CXCL8), thrombogenicity (TF, PAI-1), angiogenesis (VEGFR2, ANGPTL4), matrix remodeling (BMP-2, MMP-1), and SGLT2 and caused the down-regulation of eNOS. These responses were associated with a sustained pro-oxidant response, the nuclear translocation of NF-kB and blunted bradykinin-induced NO formation, which were prevented by inhibition of AT1R, NADPH oxidases, SGLT2, and NF-kB. AS-MPs-treated VECs showed also increased adhesion of THP-1 cells, and generation of thrombin. Conclusions: Calcified AS valve is a potent reservoir of MPs, acting as a pro-thrombogenic source per se and prompting valvular endothelial cells dysfunction through activation of the AT1R/NADPH oxidases/SGLT2 pro-oxidant pathway. The observed protective effect of empagliflozin suggests SGLT2 inhibitors as a novel therapeutic option to curb valve dysfunction.
Empagliflozin treatment prevented oxidative stress, macrophage infiltration, pro-inflammatory and pro-fibrotic responses in the left ventricle of isoprenaline-induced Takotsubo-like syndrome in rats
T Tatarcheh, S Amissi, K Matsushita, A Mroueh, A Trimaille, D Gong, W Fakih, H Muzammel, L Faucher, A Granier, M Pieper, V Schini-Kerth, O Morel
European Society of Cardiology Congress 2023, Aug 2023, Amsterdam, Netherlands. ⟨10.1093/eurheartj/ehad655.3125⟩
Communication dans un congrèsAbstractIntroduction: Takotsubo Syndrome (TTS) is an acute heart failure (HF) syndrome induced by both emotional and physical stressors involving a surge of catecholamines and apical ballooning. Currently, there is no specific treatment for TTS. Sodium-glucose cotransporter2 inhibitors (SGLT2i) showed major cardiovascular protective effects in patients with HF independent of glycemic control. SGLT2i have also been shown to have anti-inflammatory and anti-oxidant effects, and to improve the endothelial function in experimental models of cardiac disease. However, a possible protective role of SGLT2i in TTS is unclear. Thus, this study evaluated the effect of SGLT2i on isoprenaline-induced TTS-like syndrome in rats, and determined the underlying mechanism. Methods: 32 female Sprague-Dawley rats (10 weeks old) were divided into 4 groups: control, empagliflozin (30 mg/kg/day provided in the diet for 2 weeks), isoprenaline (Iso, 100 mg/kg, i.p.) to induce a TTS-like syndrome, and Iso plus empagliflozin (IE group). After 6 h of Iso injection, echocardiography was performed to determine left ventricular (LV) ejection fraction (EF) by area and heart rate (HR). At day 3, rats were sacrificed, main mesenteric artery and microvessels were collected for vascular reactivity studies, and LV was divided into base and apex to study mRNA expression levels using RT-qPCR, macrophage infiltration by in situ CD68 immunofluorescence staining, and oxidative stress using dihydroethidium. Results: The injection of Iso to rats caused at 6 h an increased LVEF and HR in the Iso and the IE groups as compared to their corresponding controls. The HR response was significantly smaller in the IE group compared to Iso group whereas LVEF was similar. In addition, in mesenteric microvessels but not the main mesenteric artery, Iso group showed significant decreased relaxations to acetylcholine and increased contractile responses to phenylephrine in intact rings both of which were not observed in the IE group. Hearts showed significantly increased mRNA levels of IL-1β, TNF-α, NOX2, VCAM-1, MMP-9, TGF-β1 and collagen-1, oxidative stress levels and CD68 staining in the apex compared to the base in the ISO group, all of which were significantly reduced in IE group. Conclusions: The present findings indicate that ISO injection caused in the LV elevated levels of oxidative stress, macrophage infiltration, pro-inflammatory, pro-remodeling and pro-fibrosis responses that were more pronounced in the apex compared to the base, and also endothelial dysfunction in the systemic microcirculation, all of which were significantly prevented by the empagliflozin treatment. They further suggest that SGLT2 appears as an interesting target in TTS.
Increased pro-remodeling and pro-thrombotic responses in the left compared to the right atrial appendage: role of low-grade inflammation and the AT1R/NADPH oxidases/SGLT2 pro-oxidant pathway
W Fakih, A Mroueh, C Alhelou, M Kindo, A Mommerot, J Mazzucotelli, M Pieper, P Ohlmann, O Morel, V Schini-Kerth, L Jesel
European Society of Cardiology Congress 2023, Aug 2023, Amesterdam, Netherlands. ⟨10.1093/eurheartj/ehad655.3123⟩
Communication dans un congrèsAbstractIntroduction: In atrial fibrillation (AF), there is a complex interplay between arrhythmia burden and cardiovascular risk factors leading to left atrial remodeling, an increased risk of stroke and heart failure. Most thrombi get formed in the atrial appendage. Several studies suggested that sodium-glucose cotransporter 2 inhibitors (SGLT2i), besides showing major benefits on heart failure, might lower the risk of incident AF. Therefore, we examined the expression level of SGLT2 in human right and left atrial appendages (RAA, LAA) and determined its role in pro-oxidant, pro-fibrotic and pro-thrombotic responses. Methods: Human RAA and LAA were collected from patients undergoing cardiac surgery at a university hospital. The LAA was cut into a proximal part (low stasis, high shear) and a distal part (high stasis, low shear). The level of reactive oxygen species (ROS) was determined using dihydroethidium, mRNA and protein expression levels by RT-qPCR, and Western blot analysis and immunofluorescence, respectively, and the level of fibrosis by Sirius red staining. Results: The distal LAA had higher mRNA levels of ICAM-1 and p53, and protein levels of ICAM-1, AT1R, p53, p21 and tissue factor than the proximal LAA. LAA displayed higher mRNA and protein levels of SGLT2 and SGLT1, pro-adhesive, pro-thrombotic, pro-remodeling, pro-fibrotic and senescence markers, and components of the angiotensin system, in addition to IL-1 mRNA levels and p-p65 NF-kB protein levels compared to RAA. These responses were associated with higher levels of oxidative stress, nitrotyrosine and fibrosis. SGLT2 immunofluorescence signals in distal LAA were colocalized with those of CD31, CD68, TNF-α and troponin T. Oxidative stress levels in distal and proximal LAA and RAA were reduced by inhibitors of NADPH oxidases, ACE1 and SGLT2, an AT1R antagonist, and by a TNF-α neutralizing antibody whereas NG-nitro-L-Arginine methyl ester, the non-selective NO synthase inhibitor, inhibited ROS in distal and proximal LAA without affecting RAA. In addition, the level of TNF-α in LAA was positively correlated to the indexed LA volume indicating a link between inflammation and remodeling. Conclusions: The distal part of the LAA of patients undergoing heart surgery showed greater impaired endothelial function and senescence associated with more pronounced pro-oxidant, pro-remodeling and pro-inflammatory responses than the proximal part and the RAA. These responses were associated with an increased expression level of SGLT 2 in endothelial cells, cardiomyocytes, and macrophages in areas showing an inflammatory response. Moreover, the pro-oxidant signal was sensitive to inhibitors of the local angiotensin system, NO synthase, SGLT2 and TNF-α. Thus, the AT1R/NADPH oxidases/SGLT2 pathway appears as an interesting target to blunt the stimulatory pro-oxidant signal in cardiac tissues affected by low-grade inflammation that leads to remodeling and fibrosis.
GLP1 receptor agonists exhibit antioxidant and anti-inflammatory properties in human heart tissue via the canonical GLP1 receptor expression through a AMPK-mediated pathway
E Cordeanu, A Qureshi, A Mroueh, J Mazzucotelli, D Stephan, V Schini-Kerth
ESC Congress 2023, Aug 2023, Amsterdam, Netherlands. ⟨10.1093/eurheartj/ehad655.2825⟩
Communication dans un congrèsAbstractBackground: Clinical research has demonstrated that glucagon-like peptide-1 receptor (GLP1R) agonists (GLP1RA) can decrease the occurrence of major cardiovascular events in diabetic patients, regardless of their glycemic control. However, a significant challenge in understanding the positive effects of GLP1RA has been the lack of knowledge regarding the specific cellular types that express GLP1R. Despite the established cardiovascular benefits of GLP1RA, previous studies have been unable to confirm the expression of GLP1R in the heart. Aim: The study aimed to investigate the expression and function of GLP1R in heart tissue. Methods: We collected human cardiac tissue samples from 30 patients who underwent left ventricle (LV) biopsies (n=21) or right atrial (RA) appendage closure (n=9) at a university hospital. Gene expression levels were assessed using RT-qPCR, protein levels by Western blot analysis, in situ tissue localization of proteins by immunofluorescence (IF) staining, and the level of oxidative stress using dihydroethidium. Results: LV biopsies and RA appendages showed a substantial heterogeneity in GLP1R mRNA levels. GLP1R mRNA levels exhibited a positive correlation with IL1B, IL6, TNFα, CCL2, CD68, ACE1, AT1R, and VCAM1 mRNA levels, but a negative correlation with NOS3 mRNA levels. High GLP1R expression in both RA appendages and LV biopsies was associated with increased oxidative stress levels, which were mitigated by the antioxidant N-acetylcysteine (NAC), NADPH oxidase inhibitor (VAS-2870), ACE inhibitor (perindoprilat), AT1R antagonist (losartan), TNF-α receptor neutralizing antibody (infliximab) and by GLP1R agonists (liraglutide and semaglutide) with inhibitory effects amounting to about 50-60 %. Exendin, a GLP1R antagonist reversed the effect of liraglutide and semaglutide which accounted for a receptor-mediated antioxidant effect. H-89, a PKA inhibitor equally reversed liraglutide and semaglutide effect on ROS generation suggesting a canonical GLP1R mediated effect involving the AMPK pathway. Conclusion: These findings indicate that human cardiac GLP1R expression levels are correlated to low-grade inflammation and endothelial dysfunction. Increased expression levels of GLP1R were associated with higher levels of oxidative stress sensitive to GLP1RA in a canonical GLP1R AMPK-mediated manner. Therefore, the cardiovascular beneficial effects of GLP1RA might be attributable to their antioxidant and anti-inflammatory properties, specifically within the cardiac system.
Potential of polyphenol-rich products to prevent and/or improve endothelial dysfunction and senescence: focus on anthocyanins
Cyril Auger
XXXI International Conference on Polyphenols, Groupe polyphenols, Jul 2023, Nantes, France
Communication dans un congrèsImpact de l’épidémie de Covid-19 chez les patients greffés pulmonaires et une cohorte de patients avec maladie rare suivis à Strasbourg
M. Hussein, F. Gallais, T. Degot, S. Hirschi, M. Riou, J. Stauder, Romain Kessler, B. Renaud-Picard
27e Congrès de Pneumologie de Langue Française, Jan 2023, Marseille, France. pp.56-57, ⟨10.1016/j.rmra.2022.11.562⟩
Communication dans un congrèsSGLT1/2 expression in the heart of transplanted patients is associated with inflammatory induction of oxidative stress: potential protective effect of SGLT2 inhibitors
Dal-Seong Gong, Ali Mroueh, Kensuke Matsushita, Walaa Fakih, Cyril Auger, Min-Ho Oak, Michael Pieper, Olivier Morel, Eric Epailly, Valérie Schini-Kerth
ESC Congress 2022, Aug 2022, Barcelona, Spain. ⟨10.1093/eurheartj/ehac544.3007⟩
Communication dans un congrèsAbstractIntroduction: Heart transplantation is a life-saving surgical procedure for patients with end-stage cardiac dysfunction, however, such procedures are usually at risk of rejection due to acute inflammatory activation. While such inflammatory induction leaves the newly transplanted heart at risk of functional and structural remodeling subsequent to oxidative damage, current anti-inflammatory treatment options expose the patient to an elevated risk for adverse reactions in addition to absence of cardio-protective effects. Therefore, novel therapies with anti-inflammatory and cardio-protective dual effects are needed. Recently, our group has reported that low-grade inflammation is associated with upregulation of SGLT1/2 in arteries of human with cardiovascular diseases. Yet, the role and function of SGLT2 in human cardiac tissue remains poorly understood. Aim: This study focuses on the expression pattern of SGLT1/2 in cardiac biopsies of heart transplanted patients and aim to identifying their functional impact. Methods: Routine endomyocardial Biopsies (23) were performed for the detection of acute rejection heart transplanted patients (less than 2 years) at our University Hospital. Gene expression levels were assessed using RT-qPCR, the in situ tissue localization of proteins by immunofluorescence staining, and the level of oxidative stress by dihydroethidium staining. Results: Gene expression analysis revealed strong inflammatory reaction in 5 samples indicated by at least 20-fold higher levels of mRNA of IL1B, IL6, TNFA and CD68 compared to the other 18 samples and concomitant with high expression levels of SLC5A1, SLC5A2, AT1R, CYBA, NCF1, ICAM1, VCAM1, MMP2, MMP9 and TGFB1 in contrast to low levels of NOS3. In addition, increased levels of oxidative stress were observed in the same biopsies, which were diminished by the antioxidant N-acetylcysteine (NAC), NADPH oxidase inhibitor (VAS-2870), TNF-α receptor neutralizing antibody (infliximab), ACE inhibitor (perindoprilat), AT1R antagonist (losartan), dual SGLT1/2 inhibitor (sotagliflozin) and selective SGLT2 inhibitor (empagliflozin) with inhibitory effects reaching up to 80%. Immunofluorescence staining indicated signals for nitro-tyrosine, TNF-alpha, SGLT1 and 2 in several samples. Conclusion: These findings indicate that both isoforms SGLT1 and SGLT2 are expressed in the transplanted human heart and suggest a pattern of expression associated with pro-inflammatory response. They further indicate a potential protective effect of SGLT2 inhibitors in transplanted hearts through mitigating oxidative stress and hence providing a possible novel therapy for heart transplantation recipients to preserve the heart function.
GLP-1 receptor expression in human internal thoracic arteries is dependent on low-grade inflammation potentially explaining the cardiovascular protective effect of GLP1-R agonists
E Cordeanu, A Qureshi, A Mroueh, J Mazzucotelli, D Stephan, V Schini-Kerth
ESC Congress 2022, Aug 2022, Barcelone, Spain. ⟨10.1093/eurheartj/ehac544.3086⟩
Communication dans un congrèsAbstractBackground: Clinical research showed that glucagon-like peptide-1 receptor (GLP1R) agonists (GLP1RA) reduced the incidence of major cardiovascular events in diabetic patients. The protective effect was more noteworthy in patients with established cardiovascular disease, associated with chronic low-grade inflammation resulting in endothelial dysfunction and arterial remodeling and fibrosis. Despite the clinically proven cardiovascular benefit of GLP1RA, the expression pattern of GLP1R and its function in the human vasculature remain poorly studied. Aim: This study investigated the expression of GLP1R and its role in internal thoracic arteries (ITA) from patients with coronary artery disease. Methods: Human ITA were collected from patients (N=30) undergoing coronary artery bypass surgery at the University Hospital of Strasbourg. Gene expression levels were assessed using RT-qPCR, protein levels by Western blot analysis, in situ tissue localization of proteins by immunofluorescence (IF) staining, and the level of oxidative stress using dihydroethidium. Results: ITA showed a substantial difference in GLP1R mRNA levels reaching up to 7-fold among patients. GLP1R mRNA levels were positively correlated with those of SLC5A1, SLC5A2, F3, AT1R, IL1B, IL6, TNFα, VCAM1 and NCF1, and negatively with NOS3 mRNA levels. High GLP1R expressing ITA showed high levels of phosphorylated p65 NF-κB, cell adhesion molecule VCAM1, members of the angiotensin system (ACE1 and AT1R), remodeling and fibrotic markers (MMP9, MMP2, TGFβ) and a low level of eNOS, whereas the contrary was observed for low GLP1R expressing ITA. IF staining showed that GLP1R signals were predominantly observed in the endothelium of low GLP1R expressing ITA and in the vascular smooth muscle of high GLP1R expressing ITA. Prominent CD68 staining associated with the endothelium and the perivascular adipose tissue were observed in high but not low GLP1R expressing ITA. High GLP1R expressing ITA showed increased levels of oxidative stress, which were inhibited by the antioxidant N-acetylcysteine (NAC), NADPH oxidase inhibitor (VAS-2870), ACE inhibitor (perindoprilat), AT1R antagonist (losartan), TNF-α receptor neutralizing antibody (infliximab), selective SGLT2 inhibitor (empagliflozin), dual SGLT1/2 inhibitor (sotagliflozin) and by GLP1R agonists (liraglutide and semaglutide) with inhibitory effects amounting to about 50 to 75%. Conclusion: These findings indicate that GLP1R expression levels in human ITA are dependent on low-grade inflammation and linked to endothelial dysfunction, pro-thrombotic, pro-remodeling and pro-fibrotic responses. Furthermore, they were associated with increased level of oxidative stress sensitive to inhibitors of either the local angiotensin system, SGLT2, TNFα and agonists of GLP1R. Thus, the cardiovascular beneficial effects of GLP1R agonists might be attributable to their ability to reduce the pro-oxidant stimulatory signal related to low-grade inflammation.
Enrichment in procoagulant microparticles in calcified human aortic valve – role in valvular endothelium alterations and enhanced thrombogenicity
S Hmadeh, A Trimaille, K Matsushita, F Zobairi, C Sato, M Kindo, T Hoang, B Marchandot, F Toti, K Zibara, E Hamade, V Schini Kerth, G Kauffenstein, O Morel
ESC Congress 2022, Aug 2022, Barcelone, Spain. ⟨10.1093/eurheartj/ehac544.1519⟩
Communication dans un congrèsAbstractBackground: Aortic stenosis (AS) is characterized by endothelial dysfunction (ED), inflammatory cell infiltration, myofibroblastic and osteoblastic differentiation. Subclinical leaflet thrombosis was recently linked to higher rates of stroke and transient ischemic attack after transcatheter aortic valve implantation (TAVI). Procoagulant microparticles (MPs) are associated with ED, inflammation and clot formation. There is limited evidence regarding intra-valvular MPs content and their potential biological effects. This question is particularly relevant in TAVI in which the residing native valve could constitute a source of thrombotic activity enhancing leaflet thrombosis and valve dysfunction. Purpose: Therefore, we hypothesized that MPs trapped within the native aortic valve contribute to valvular dysfunction including enhanced thrombogenicity. Methods: Human valves were collected from patients undergoing surgical valve replacement for AS or aortic insufficiency (AI). Pro-thrombotic, pro-inflammatory, and ED markers were identified in the calcified vs non-calcified part of the valves by Western-blot. Calcium content was measured through colorimetric method. MPs were extracted from human pathological valves, and quantified through their prothrombinase activity. Primary cultures of porcine valvular endothelial cells (VEC) were treated with the MPs (10 nmol/L) or thrombin (1U/ml) for 24hrs. Phenotypic change was appreciated through gene expression pattern assessed by RT-qPCR. IL-8 secretion was measured by ELISA. Results: The phenotype of the AS valve was characterized through increased expression of thrombogenic (tissue factor, thrombomodulin, PAI-1), adhesive (VCAM-1, ICAM-1) and inflammatory (COX-1, COX-2) molecules in the calcified part of the valve. Moreover, MPs content was increased in the calcified vs non-calcified part of the valve or AI valves. MPs levels was correlated with valvular calcium content (R=0.3862: p<0.001). Tissue factor was increased in MPs extracted from AS vs AI. The biological effect of MPs was tested on VEC in-vitro. Results showed dramatic increase in expression of inflammatory cytokines (CXCL10, CCL11, CXCL8, MCP1) adhesion molecules (VCAM-1, ICAM-1, SELP, SELE) and proangiogenic factors (VEGFR2, ANGPTL4) in VEC exposed to MPs (24h) from AS vs AI. Enhanced secretory phenotype was evidenced through IL-8 determination in the supernatant of VEC stimulated with MPs from AS valve. Conclusion: Calcified aortic valve is a potent reservoir of MPs, acting as a pro-thrombogenic source per se and promoting a switch of VEC phenotype toward prothrombotic, proinflammatory and proangiogenic pattern. These data suggest that MPs released from the native valve constitute an important source of mediators involved in enhanced thrombogenicity and valvular remodeling. Funding Acknowledgement Type of funding sources: Other. Main funding source(s): GERCA-Groupe Etudes Reali Commercia Avignon
Upregulation of SGLT1 and 2 promotes oxidative stress in right atrial appendages of patients with low-grade inflammatory responses: potential role in atrial fibrillation
W Fakih, A Mroueh, C Auger, M Kindo, A Mommerot, J Mazzucotelli, M Pieper, P Ohlmann, O Morel, V Schini-Kerth, L Jesel
ESC Congress 2022, Aug 2022, Barcelona, Spain. ⟨10.1093/eurheartj/ehac544.2925⟩
Communication dans un congrèsAbstractIntroduction: Atrial fibrillation (AF), the most common cardiac arrhythmia, is associated with increased morbidity and mortality. Inflammatory infiltrates have been observed in atrial tissues from AF patients suggesting that low-grade inflammation contributes to the pro-fibrotic, pro-remodeling and pro-senescence responses of the atrial tissue favoring AF. Although sodium glucose co-transporter2 inhibitors (SGLT2i) have shown beneficial effects in heart failure, the expression and role of SGLT2 in cardiac tissues remain unclear. Purpose: This study examined the expression of SGLT1 and 2 in right atrial appendages (RAA) of cardiac patients, and, if so, to determine the underling mechanism and their functional role. Methods: RAA were harvested from patients undergoing coronary artery bypass surgery or aortic valve replacement at the University Hospital of Strasbourg. Patients with comorbidities such as malignancies and chronic inflammatory diseases were excluded. The expression level of markers was assessed using RT-qPCR, Western blot analysis, and immunofluorescence staining, and the level of reactive oxygen species using dihydroethidium staining. Results: Analysis of RAA samples evidenced up-to a 4-fold difference in the NOS3 mRNA level. Those with low levels of NOS3 mRNA showed high levels of ICAM1, F3, MMP9, TGF-β1, TP53, CDKN1A, CDKN2A, SLCA1, SLCA2, IL1B, IL6, TNF-a and CD68 whereas the contrary was observed in those with high levels of NOS3 mRNA. SGLT1/2 mRNA levels were negatively correlated with that of eNOS and positively with those of IL-1, IL-6, TNF- α, CD68, and the senescence marker p53. Western blot analysis of RAA indicated that those expressing low levels of eNOS protein showed high levels of ICAM-1, VCAM-1, TF, MMP-2, TGF-b, SGLT1, SGLT2, p-p65, p53, p21 and p16 proteins whereas the contrary was observed in those with high levels of eNOS protein. Immunofluorescence staining indicated that SGLT1/SGLT2 signals were colocalized with those of CD31, an endothelial cell marker, in RAA, and associated with those of CD68 and TNF-α. Samples with high levels of SGLT1 and 2 displayed higher levels of oxidative stress that were inhibited by the antioxidant NAC (N-acetylcysteine), VAS-2870 (NADPH oxidase inhibitor), perindoprilat (ACE inhibitor), losartan (AT1R antagonist), empagliflozin (selective SGLT2 inhibitor), sotagliflozin (dual SGLT1/2 inhibitor) and by infliximab (TNF-α receptor neutralizing antibody). Conclusion: The findings indicate that high expression levels of SGLT1 and 2 are observed in RAA showing low eNOS levels associated with pro-inflammatory, pro-senescent, pro-remodeling and pro-fibrotic responses. They were further associated with increased levels of oxidative stress sensitive to inhibitors of either the local angiotensin system, TNF-alpha or SGLT2. Thus, inhibition of SGLT2 appears to be an interesting approach to reduce the stimulatory pro-oxidant signal in atrium related to low-grade inflammation. Funding Acknowledgement Type of funding sources: Private company. Main funding source(s): Boehringer Ingelheim Pharma GmbH & Co. KG
Crosstalk between PKR1 and miR-124 is crucial for EMT regulation of tc21+epicardial mesothelial cells during cardiac development and repair process
H Arora, A Mammadova, Canan G. Nebigil
European Society of Cardiology annuel meeting, Aug 2022, Barcelona, Spain. ⟨10.1093/eurheartj/ehac544.3003⟩
Communication dans un congrèsAbstractAbstract Background The epicardial-mesothelial cells (EMCs) are essential regulators of cardiac growth and repairment process. The epicardial-to-mesenchymal transition (EMT) of epicardial fate determination are controlled by both cell autonomous and cardiomyocyte-originated mechanisms. Here, by using an in vitro and in vivo model of epicardial EMT, we investigated the role of miRNAs as regulators of these process and their potential targets. Methods EMT was induced in mice embryonic tcf21+EMCs through an angiogenic cytokine, prokineticin treatments. Cre-dependent tracing of TCF21-tm-iCRE-EMCs was utilized to abrogate prokineticin receptor-1 (PKR1) in mice epicardium. Human tcf21+ cardiac fibroblast (mainly originated from epicardial origin also utilized to study for their repairment signaling. Results Upon EMC-specific abrogation of PKR1 in early stages of cardiac development the TCF21-tm-iCREPKR1−/− mice exhibited 13±4% embryonic lethality due to a disconnection of epicardial cells from compact layer, failed expansion of the sub-epicardial space, and disruption of heterotypic cell interaction between epicardium and myocardium. EMT-RT profiler and enrichment analysis revealed an impaired EMT in TCF21-tm-iCREPKR1−/− hearts. Ingenuity Pathway Analysis on the EMT molecular network (e.g., Snai1, Snai2, B-catenin, N-cadherin, vimentin), specific to cardiac development and defects revealed MiR-124 as a part of this network that was inversely associated and down-stream of PKR1 in cultured Tcf21+ cells. Furthermore, protein expression of SNAIL2 was significantly downregulated in TCF21-tm-iCREPKR1−/− hearts and cultured Tcf21+ cells upon treatment with mir124 mimic. The luciferase reporter assay showed that miR124 directly targeted the 3'-untranslated region of SNAIL2 in EMCs. In a counter experiment, PKR1 gene replacement or mir124 inhibitor was able to rescue the impaired EMT-genes, and an increase in apoptosis and impaired proliferation in epicardium of embryonic TCF21-tm-iCREPKR1−/− hearts. Importantly, miRNA mimic in cultured tcf21 cells maintained epithelial features in EMCs, and increased EMT-associated transcripts and traits, such as apoptosis. In contrast, MiR124 is involved in wound healing process in tcf21+human CFs and EMCs. Conclusion This study shows the importance of a crosstalk between PKR1 and miR-124 with respect to EMT regulation during cardiac development and repair. Controlling fibroblast-committed EMT and pathological fibrotic remodeling is of increasing interest within the field of regenerative tissue engineering and development of interventional strategies after cardiac injury. Funding Acknowledgement Type of funding sources: Foundation. Main funding source(s): Fondation de France
La perception des perturbations respiratoires en parole : le cas des enfants porteurs de fentes labio-palatines.
Delphine Charuau, Beatrice Vaxelaire-Sock, Rudolph Sock, Bruno Grollemund
PerceptiO : la perception et le vivant, 14-17 novembre 2021, Université de Strasbourg, Nov 2021, Strasbourg, France
Communication dans un congrèsProkineticin as a Biomarker of Cardiotoxicity in Cancer Patients
Canan G Nebigil, Anais Audebrand, Daniela Cardinale
American Heart Association annuel meeting, Nov 2021, Boston (MA), United States. ⟨10.1161/circ.144.suppl_1.13232⟩
Communication dans un congrèsAbstractMany anticancer drugs are highly effective for cancer treatments. However, they triggerclinically significant cardiovascular morbidity and in some case mortality. Recently,experimental data support an important protective role of prokineticin-2, a cytokine, againstanthracycline-mediated cardiovascular toxicity. The aim of this study was to examine thelevels of plasma prokineticins (PROK1 and PROK2), and clinically used cardiac biomarkers(Troponin-T, Brain Natriuretic peptide) to assess possible correlations of these cytokines withrisk and severity of cardiotoxicity of cancer treatments. 200 patients with different type oftumor (mostly breast cancer, and ovarian cancer, urinarybladder cancer or other types oftumors), were enrolled. They were scheduled for cancer treatments including anthracyclinesalone, monoclonal antibody-based tyrosine kinase inhibitors TKI alone, a combination ofanthracyclines and TKI, and a combination of both anticancer agents and taxanes. Theexclusion criteria were previous anticancer treatments and cardiovascular pathologies suchashypertension, cardiomyopathy, coronary artery disease, life threatening arrhythmias, andongoing cardiovascular treatments. High-sensitive troponin I (TNI), BNP, PROK1 and PROK2were assessed in the plasma and cardiac systolic function (left ventricular ejection fraction,LVEF) were assessed by ECHO atbaseline and at 3, 6, 12 months after the completion of theoncology treatments. 42/142 patients (33%) showed an increase in TNI during or soon afterthe completion of cancer therapy. All patients (except for2) with an elevated TNI received acardioprotective therapy with enalapril. LVEF gradually and significantly decreased frombaseline during the observational period (P<0.001). This was associated with increased levelsof TNI levels during and soon after cancer treatments. BNP levels remained unaltered. PROK1levels (N=63) had slightly, but not significant increased. PROK2 levels significantly increased(N=63) from baseline. This pilot study confirmed the role of TNI in predicting chemotherapy-mediated cardiotoxicity, and identified for the first time PROK2 as potential biomarker thatmay help to identify patients more prone to develop cardiotoxicity.
Prokineticin as a Biomarker of Cardiotoxicity in Cancer Patients. Circulation. 2021;144:A13232
Anais Audebrand, Daniela Cardinale, C.G. Nebigil
American Heart Association, Nov 2021, Boston, United States
Communication dans un congrèsThrombin and factor Xa promote premature senescence and remodeling in areas at risk of the left appendage and in atrial endothelial cells: potential modulation by SGLT1 and/or SGLT2 inhibition
W Fakih, H Hasan, D Gong, P Ohlmann, O Morel, V Schini Kerth, L Jesel
ESC Congress 2021 – The Digital Experience, Aug 2021, Online, Antarctica. ⟨10.1093/eurheartj/ehab724.3269⟩
Communication dans un congrèsAbstractIntroduction: Atrial fibrillation (AF), the most common cardiac arrhythmia, promotes prothrombotic responses particularly in the distal part of the left atrial appendage (LAA) characterized by reduced flow and low shear stress. AF occurrence and duration are closely associated with endothelial dysfunction and left atrium remodeling. The contribution of coagulation factors thrombin and factor Xa (FXa) to LA remodeling remains poorly studied. This study investigated whether thrombin and FXa promote endothelial dysfunction and profibrotic and prothrombotic responses in the distal and proximal parts of the LAA. Since SGLT2 inhibitors have shown pronounced cardiac protection, the contribution of SGLT2 was examined. Methods: LAAs were harvested from porcine hearts. Proximal (low stasis, high shear) and distal (high stasis, low shear) parts were cut and incubated with a coagulation factor (thrombin or FXa). Left atrial endothelial cells (AECs) were collected enzymatically, cultured and used at passage 1. The level of oxidative stress was assessed using the redox-sensitive probe dihydroethidium (DHE), fibrosis by Sirius red histological staining, senescence-associated β-galactosidase (SA-β-gal) activity using X-gal staining in tissues and the fluorogenic substrate C12FDG and flow cytometry in cells. The expression of target proteins was detected by immunofluorescence staining and Western blot analysis. Results: The distal part of LAA displayed higher levels of oxidative stress in the endothelium and the atrial wall than the proximal part. SA-β-gal activity, ICAM-1, VCAM-1, and MMP-9 staining was more pronounced in the endothelium of the distal part compared to the proximal part whereas eNOS staining was decreased. The distal LAA wall showed higher levels of fibrosis. Western blot analysis showed higher expression levels of tissue factor (TF), VCAM-1, MCP-1, MMP-9, TGF-β and SGLT-2 in the distal part compared to the proximal one. Both thrombin and FXa increased these signals to a greater extent in the distal part of the LAA whereas the eNOS expression level was decreased. Exposure of AECs to either thrombin or FXa induced a pro-oxidant response and increased the expression level of ICAM-1, TGF-β, MMP-2, MMP-9, SGLT1 and SGLT-2. Thrombin promoted SA-β-gal activity in AECs. The selective SGLT-2 inhibitor empagliflozin and the dual SGLT1/2 inhibitor sotagliflozin prevented the pro-oxidant response and SA-β-gal activity in response to thrombin. Conclusion: Thus, the distal part of the LAA is prematurely affected by endothelial dysfunction and senescence associated with a pro-oxidant, pro-remodeling and pro-inflammatory response that is further increased by thrombin and FXa. Hence, the coagulation cascade appears to prematurely promote atrial endothelium and wall dysfunction predominantly in areas at risk that may pave the way to thrombus formation. The findings also suggest a potential protective effect of SGLT1 and/or SGLT2 inhibition on atrial dysfunction.
Endothelial NADPH oxidases protect against sympathetic nervous system hyperactivity-induced cardiac dysfunction and remodeling in mice: contribution of SGLT2
S Kerth, A Petry, D Kracun, V Schini-Kerth, A Goerlach
ESC Congress 2021 – The Digital Experience, Aug 2021, Online, Antarctica. ⟨10.1093/eurheartj/ehab724.3299⟩
Communication dans un congrèsAbstractBackground: NADPH oxidase-derived reactive oxygen species (ROS) contribute to cardiac dysfunction, often characterized by coronary microvascular dysfunction, an inflammatory response and cardiomyocyte hypertrophy. Hyperactivity of the sympathetic nervous system (SNS) induces oxidative stress, promoting cardiac dysfunction and the development of heart failure. Selective inhibitors of sodium-glucose co-transporter 2 (SGLT2), have shown remarkable cardioprotective effects in clinical studies. Recently, SGLT2 inhibitors have been reported to prevent endothelial dysfunction and pro-inflammatory responses in endothelial cells in response to angiotensin II involving NADPH oxidases. Purpose: Therefore, the aim of the study was to determine whether endothelial NADPH oxidases promote SNS-induced cardiac dysfunction and to clarify the role of SGLT2. Methods: Male wild-type mice and mice lacking the NADPH oxidase subunit p22phox in the endothelium (p22phox ecKO, 11-week-old) were treated with isoproterenol (100 mg/kg) for five consecutive days and sacrificed at day 14. Hemodynamic measurements of left (LV) and right (RV) ventricles were performed by a transthoracic approach. Heart tissue sections were stained with Sirius red to evaluate fibrosis and wheat germ agglutinin to assess cardiomyocyte size. Cultured human microvascular endothelial cells (HMEC-1) were stimulated with 100 nM isoproterenol and ROS levels were assessed by dihydroethidium fluorescence. The expression level of target genes and proteins was assessed by quantitative real-time PCR and Western blot, respectively. siRNA approaches were used to down-regulate either the NADPH oxidase subunit p22phox or SGLT2. Results: The isoproterenol treatment increased LV and RV systolic pressures in wild-type mice but not in p22phox ecKO mice. p22phox ecKO mice were protected against isoproterenol-induced fibrosis, cardiac remodeling characterized by upregulation of mRNA levels of ANP, BNP and β-MHC, and pulmonary congestion. LV remodeling was associated with upregulation of the NADPH oxidase subunits p22phox, Nox2, and Nox4 as well as of SGLT2 in wild-type mice, however no such effects were observed in p22phox ecKO mice. Exposure of HMEC-1 to isoproterenol stimulated the formation of ROS and caused an upregulation of p22phox and SGLT2 protein levels in a time- and concentration-dependent manner. No such effects were observed following silencing of either p22phox or SGLT2, or use of a selective SGLT2 inhibitor. Conclusion: Deletion of the NADPH oxidase subunit p22phox in the endothelium protected against SNS hyperactivity induced LV cardiac dysfunction and remodeling, and prevented upregulation of SGLT2. Since depletion of SGLT2 prevented the pro-oxidant response to isoproterenol in endothelial cells, the endothelial NADPH oxidase/SGLT2 pathway seems to have a prominent role in promoting cardiac remodeling and dysfunction in SNS hyperactivity. Funding Acknowledgement Type of funding sources: Public hospital(s).
Sodium-glucose co-transporter 1 and 2 expression in the mammary artery of patients with bypass surgery: role of the pro-inflammatory response and contribution to oxidative stress
S Park, S Amissi, P Algara-Suarez, D Gong, A Mroueh, E Belcastro, K Matsushita, C Bruckert, A Chaker, L Jesel, P Ohlmann, O Morel, J Mazzucotelli, V Schini-Kerth
ESC Congress 2021 – The Digital Experience, Aug 2021, Online, Antarctica. ⟨10.1093/eurheartj/ehab724.3440⟩
Communication dans un congrèsAbstractBackground: Selective sodium-glucose cotransporter 2 (SGLT2) inhibitors have shown cardiovascular protection independently of glycemic control. Angiotensin II (Ang II) and H2O2 induced the expression of SGLT1 and 2 in cultured endothelial cells and isolated arteries to promote oxidative stress and endothelial dysfunction. However, the expression level and role of SGLT1 and 2 in human arteries remain poorly studied. Purpose This study examined the expression level of SGLT1 and 2 in the human internal mammary artery (IMA) obtained from bypass surgery patients, and, if so, determined the underlying mechanism and function. Methods: IMAs were obtained from 40 bypass surgery patients (age 45 to 82). The expression level of target factors was assessed by Western blot analysis, immunofluorescence staining and RT-PCR, and the level of oxidative stress using dihydroethidium staining. Human kidney was used as a control tissue known to express SGLT1 and 2. Porcine coronary artery endothelial cells (CAEC) were cultured and studied at passage 1. Results: Western blot analysis of 40 IMA samples indicated a high level of both SGLT1 and 2 in 16 and 17 IMAs, an intermediate level in 8 and 6 IMAs, and a low one in 16 and 17 IMAs, respectively. Immunofluorescence staining of IMA sections indicated that SGLT1 and 2 immunofluorescence signals were observed predominantly in the intima thickening and the media. The expression levels of SGLT1 and 2 were associated with p-p65 NF-kB signals but not angiotensin-converting enzyme (ACE), AT1R, MCP-1, VCAM-1. IMAs with a high expression level of SGLT1 and 2 had a high level of ROS throughout the arterial wall including the intima thickening and endothelium, which was inhibited by the antioxidant N-acetylcysteine, the ACE inhibitor perindoprilat, the AT1R antagonist losartan, and also by the dual SGLT1 and 2 inhibitor sotagliflozin and the selective SGLT2 inhibitor empagliflozin. Pro-inflammatory cytokines mRNA levels of IL-1β, TNF-α and IL-6 were detected in IMAs. Exposure of CAEC to either TNF-α, IL-1β or IL-6 caused a concentration-dependent upregulation of SGLT1 and 2. Conclusion: The present findings indicate that SGLT1 and 2 expression is observed in some but not all IMAs of bypass surgery patients predominantly in the media, the intima thickening and the endothelium. High expression levels of SGLT1 and 2 are associated with NF-kB activation and oxidative stress that is prevented by a selective SGLT2 inhibitor and by a dual SGLT1/2 inhibitor. Since pro-inflammatory cytokines triggered SGLT1 and 2 expression in endothelial cells, the inflammatory burden of patients appears to be an important trigger regulating SGLT1/2 expression and the subsequent pro-oxidant response prompting pro-inflammatory and pro-thrombotic responses.
Protective effects of dapagliflozin on vascular remodeling in the carotid artery following balloon injury – potential role of angiotensin and purinergic signaling
K Matsushita, C Sato, C Bruckert, D Gong, S Hmadeh, W Fakih, L Remila, C Auger, L Jesel, P Ohlmann, G Kauffenstein, V Schini-Kerth, O Morel
ESC Congress 2021 – The Digital Experience, Aug 2021, Online, Antarctica. ⟨10.1093/eurheartj/ehab724.3409⟩
Communication dans un congrèsAbstractIntroduction: Sodium-glucose co-transporter 2 (SGLT2) inhibitors have been shown to reduce the risk of cardiovascular events independently of glycemic control. The possibility that SGLT2 inhibitors improve endothelial regeneration and vascular restenosis is unknown. Purpose: To examine whether dapagliflozin, a selective SGLT2 inhibitor, could prevent neointima thickening induced by balloon injury and, if so, to determine the underlying mechanisms. The effect of dapagliflozin was compared to that of losartan, an angiotensin type 1 receptor (AT1R) antagonist. Methods: Saline, dapagliflozin (1.5 mg/kg/day), or losartan (30 mg/kg/day) were administered orally for 5 weeks to male Wistar rats. Balloon injury of the left carotid artery was performed 1 week after starting the treatment and sacrificed 4 weeks later. Vascular reactivity was assessed on left (injured) and right (healthy) carotid artery rings. The extent of neointima was assessed by histomorphometric analysis, changes of target factors by immunofluorescence, RT-qPCR and histochemistry. Results: Dapagliflozin and losartan treatments reduced neointima thickening by 32% and 27%, respectively. Blunted contractile responses to phenylephrine and relaxations to acetylcholine and down-regulation of eNOS were observed in the injured artery. These effects were not modified by the dapagliflozin or the losartan treatments. RT-qPCR investigations indicated an increased in gene expression of inflammatory (IL-1beta, ITGAM, VCAM-1), oxidative (p47phox, p22phox) and fibrotic (TGF-beta1) markers and a decreased of eNOS in the injured carotid. However, these changes were not affected by the pharmacological treatments. By contrast, significant increased levels of AT1R angiotensin receptor and NTPDase1 (CD39) ectonucleotidase were observed in the restenotic carotid artery of the dapagliflozin group. Histochemical analysis evidenced important NTPDase1 activity in the neointima. Conclusions: Dapagliflozin effectively reduced neointimal thickening. As the contribution of AT1R and P2Y2 ATP receptor in smooth muscle cell proliferation and neointima formation has been reported in the literature, the present data suggest that dapagliflozin prevents restenosis through interfering with angiotensin and/or extracellular nucleotides signaling. SGLT2 transporter represent potential new target for limiting vascular restenosis.
Impact of Covid-19 infection in high-risk coronary patients
A. Carmona, B. Marchandot, K. Matsushita, A. Curtiaud, A. Elidrissi, A. Trimaille, M. Kibler, T. Cardi, J.O.E. Heger, S. Hess, A. Reydel, S. Fafi-Kremer, V. Schini-Kerth, L. Jesel, P. Ohlmann, O. Morel
31èmes Journées Européennes de la Société Française de Cardiologie, Jan 2021, Online, Antarctica. pp.11-12, ⟨10.1016/j.acvdsp.2020.10.014⟩
Communication dans un congrèsHokusai post-PE study: a follow-up study on long-term outcomes of pulmonary embolism in patients treated with edoxaban vs warfarin
Ingrid Bistervels, Wim Boersma, Roisin Bavalia, Karina Meijer, Peter Verhamme, Hugo ten Cate, Jan Beyer-Westendorf, Sebastian Schellong, Barbara Hutten, Michael Kovacs, Marco Cattaneo, Waleed Ghanima, Amanda Hugman, Michiel Coppens, Marije ten Wolde, Dominique Stephan, Nicolas Falvo, Dominique Brisot, Isabelle Quere, Saskia Middeldorp
ERS International Congress 2020, Sep 2020, En ligne, France. pp.3581, ⟨10.1183/13993003.congress-2020.3581⟩
Communication dans un congrèsPerturbation des patterns respiratoires en parole : le cas des enfants porteurs de fentes labio-palatines.
Delphine Charuau, Beatrice Vaxelaire-Sock, Bruno Grollemund, Rudolph Sock
Congrès de la Société Française de Phoniatrie et Laryngologie, Tours., Aug 2020, Tours, France
Communication dans un congrèsCompletion pneumectomy is a safe procedure for non-small cell lung cancer
Sophie Guinard, Anne Olland, Marc Puyraveau, Joseph Seitlinger, Pierre Emmanuel Falcoz, Gilbert Massard
ERS International Congress 2019, Sep 2019, Madrid, Spain. pp.PA4670, ⟨10.1183/13993003.congress-2019.PA4670⟩
Communication dans un congrèsOutcomes of pneumonectomy for N2 non small cell lung cancer
Sophie Guinard, Anne Olland, Marc Puyraveau, Joseph Seitlinger, Pierre Emmanuel Falcoz, Gilbert Massard
ERS International Congress 2019 abstracts, Sep 2019, Madrid, Spain. ⟨10.1183/13993003.congress-2019.PA381⟩
Communication dans un congrèsAgeing is associated with increased endothelial sodium-glucose cotransporter 1 expression at arterial sites at risk promoting enhanced anthocyanin accumulation and improved vascular oxidative stress
Ahmed Bey Chaker, Paola Algara Suarez, Lamia Remila, Christophe Bruckert, Sin-Hee Park, Ursula Houngue, Eugenia Belcastro, Abdul Wahid Qureshi, Hanine El Itawi, Florence Toti, Valérie B. Schini-Kerth, Cyril Auger
Congress of the European-Society-of-Cardiology (ESC) / World Congress of Cardiology, European Society of Cardiology, Aug 2019, Paris, France. ⟨10.1093/eurheartj/ehz746.0877⟩
Communication dans un congrèsAbstractIntroduction: Ageing is characterized by endothelial dysfunction and vascular oxidative stress affecting initially arterial sites at risk. Anthocyanin-rich products are potent stimulators of the endothelial formation of nitric oxide. Sodium-glucose co-transporter 1 (SGLT1) expression has been shown to be increased by oxidative stress and mediate anthocyanin uptake in endothelial cells. Purpose: The study determined whether ageing is associated with an upregulation of SGLT1 in arterio-susceptible (aortic arch) and resistant (aorta) sites, and evaluated the vascular SGLT1mediated anthocyanin uptake. In addition, the impact of a 2-week ingestion of an anthocyaninrich blackcurrant concentrate (ARBC) by old rats on vascular anthocyanin uptake and oxidative stress, and systolic blood pressure (SBP) was assessed. Methods: Male Wistar rats (22-month old) were either untreated or treated with ARBC (60 and 120 mg/kg/day) in the drinking water for 2 weeks. SGLT1 expression was assessed by immunofluorescence, anthocyanin accumulation by Neu A reagent using a purified extract (BCE) prepared from ARBC, oxidative stress by dihydroethidium using confocal microscopy, and SBP by tail-cuff sphingomanometry. Results: SGLT1 immunofluorescence was observed predominantly in the endothelium and was higher in the aortic arch than the aorta in old rats whereas only low levels were observed in young rats (12-week old). Exposure of vascular sections to BCE resulted in anthocyanin uptake exclusively in the endothelium, which was higher in the aortic arch than the aorta, and more pronounced in old than young rats. Anthocyanin uptake induced by BCE in the aorta was markedly reduced by LX4211 (a SGLT1/2 inhibitor) both in old and young rats. A high level of oxidative stress was observed throughout the aortic wall of old compared to young rats, which was inhibited by LX4211. Ingestion of ARBC by old rats resulted in a dose-dependent accumulation of anthocyanins throughout the aorta wall and the aortic arch. The tissue accumulation of anthocyanins was associated with a reduced level of oxidative stress. Ageing was associated with increased SBP by about 8 mmHg, which was reduced by ARBC 60 and 120 mg/kg/day treatment by about 5 and 7 mmHg, respectively. Conclusion: The present findings indicate that ageing is associated with an upregulation of SGLT1 predominantly in the endothelium and that this effect is more pronounced at the aortic arch than the aorta. The increased endothelial expression level of SGLT1 promoted a greater accumulation of anthocyanins sensitive to LX4211. In addition, a 2-week ingestion of ARBC by old rats resulted in the accumulation of anthocyanins throughout the arterial wall of the aortic arch and aorta, and resulted in a reduced level of oxidative stress and systolic blood pressure. Thus, SGLT1 may be an attractive target to restore vascular protection at arterial sites at risk by promoting endothelial and vascular uptake of anthocyanins.
La représentation de la sphère buccale dans la bande dessinée et sa perception par l'enfant
Marion Strub, M. Chikli, Odile Rohmer, Marie Cecile Maniere
49ème Congrès de la Société Française d’Ontologie Pédiatrique. Paris, France., 24-25 mai 2019, May 2019, Paris, France
Communication dans un congrèsAbstract 92: Characterization of hormone-sensitive and castrate-resistant phenotypes in prostate cancer patient-derived PDX models generated from the same patient
Hervé Lang, Claire Beraud, Myriam Lassalle, Véronique Lindner, Eric Potiron, Philippe Lluel, Thierry Massfelder
Proceedings: AACR Annual Meeting 2019; March 29-April 3, 2019; Atlanta, GA, Mar 2019, Atlanta, United States. pp.92-92, ⟨10.1158/1538-7445.SABCS18-92⟩
Communication dans un congrèsCone-beam computed tomography - magnetic resonance imaging registration in dento-maxillary imaging
Fabien Bornert, Catherine-Isabelle Gros, Jean-Christophe Lutz, David Schultz, Sophie Riehm, Philippe Choquet, Georg Schulz, Bert Müller, Jean-Philippe Dillenseger
SPIE Optical Engineering + Applications, 2019, San Diego, California, United States, 2019, San Diego, United States. ⟨10.1117/12.2530643⟩
Communication dans un congrèsCardioprotective effect of non-peptidic pkr1 agonist against anthracycline-cardiotoxicity
Adeline Gasser, Marine Charavin, Brigitte Escoubet, Nadia Messaddeq, Laurent Désaubry, Canan Nebigil-Désaubry
Heart Failure 2017 and the 4th World Congress on Acute Heart Failure, Paris, France, 29 April – 2 May 2017, May 2017, Paris, France. pp.511-511
Communication dans un congrèsColloque sur la maladie thromboembolique en gynécologie-obstétrique et sénologie 23 mars 2017, Strasbourg = [Symposium on thromboembolic disease in gynecology-obstetrics and senology. March 23, 2017, Strasbourg. Part 1]
Emmanuel Andrès, Mihaela Cordeanu, Olivier Feugeas, Gabrielle Fritz, Anne-Sophie Korganow, Bruno Langer, Carole Mathelin, Annick Steib
Colloque sur la maladie thromboembolique en gynécologie-obstétrique et sénologie 23 mars 2017, Strasbourg, Mar 2017, Strasbourg, France. pp.404-411, ⟨10.1684/met.2018.0744⟩
Communication dans un congrèsDiscovery of PKR1 agonist with cardioprotection effect
Canan Nebigil
American Heart Association Congress, BCVS, Jul 2015, New Orleans, United States
Communication dans un congrèsOncogenic versus tumour suppressor potential of the new N-hydrolase DNPH1 in prostate and kidney cancers
Sabrina Danilin, C Amiable, P Kaminski, J Paoletti, Catherine Coquard, Veronique Lindner, Hervé Lang, S Pochet, Thierry Massfelder
EAU15 – 30th Annual Congress of the European Association of Urology, 20-24 March 2015, Madrid, Spain, Mar 2015, Madrid, Spain. pp.e286, ⟨10.1016/S1569-9056(15)60283-4⟩
Communication dans un congrèsProkineticins –a novel axis between heart and kidney
Canan Nebigil-Desaubry
Kyushu University, Fukuoka, Japon, 16 novembre 2014, Nov 2014, Fukuoka, Japan
Communication dans un congrèsProkineticins in Cardiac disease -regenerative medicine and drug development
Canan Nebigil-Desaubry
The 87th Annual meeting of Japanese Biochemical Society, Nov 2014, Kyoto, Japan
Communication dans un congrèsProkineticin and cardiac regeneration
Canan Nebigil-Desaubry
University of Sao Paulo. Heart Institute (InCor), Oct 2014, Sao Paulo, Brazil
Communication dans un congrèsProkineticins in endothelial insulin uptake
Canan Nebigil-Desaubry
9th World congress on Targeting Diabetes, Oct 2014, Strasbourg, France
Communication dans un congrèsProkineticins and cardiovascular and metabolic disorders
Canan Nebigil-Desaubry
I2CM, Jun 2014, Toulouse, France
Communication dans un congrèsEndothelial-Prokineticin receptor and insulin resistance
Canan Nebigil
American Heart Association Congress, Dallas, Texas, USA, 3-7 novembre 2013, Nov 2013, Dallas, United States
Communication dans un congrèsRole of PKR1 in epicardial progenitor cells
Canan Nebigil-Desaubry
EMBO/EMBL symposium:Cardiac Biology − From Development to Regenerative Medicine, Apr 2013, Heidelberg, Germany
Communication dans un congrèsProkineticin receptor-1 as a new comer in epicardial progenitor cell conversion to cardiovascular cells
Canan Nebigil-Desaubry
American Heart Association Congress, Nov 2012, Los Angeles, United States
Communication dans un congrèsEndothelial dysfunction promoted by PKR1 insufficiency causes cardiovascular and renal defects and insulin resistance.
Canan Nebigil
Cell Symposium, Angiogenesis, Metabolic Regulation, and Cancer Biology, Jul 2012, Leuven, Belgium
Communication dans un congrèsGenetic inactivation of PKR1 receptor induces heart and kidney disorders: role of progenitor cell
Canan Nebigil
International Myology Congress, 2012, Lille, France
Communication dans un congrèsRole of prokineticin receptors in cardiovascular function: from genetically manipulated animals to drug discovery
Canan Nebigil-Desaubry
1th Turkish Pharmacology Congress, Eskisehir, Turquie, 19-22 octobre 2011, Oct 2011, Eskisehir, Turkey
Communication dans un congrèsEndothelial-specific ablation of Prokineticin receptor1 in mice promotes metabolic disease-like disorders
Canan Nebigil
American Heart Association Basic Cardiovascular Science, New-Oleans, USA, 18-21 juin 2011, Jun 2011, New-Oleans, United States
Communication dans un congrès- Poster de conférence
IMMUNORARE 5 : A national platform of 5 academic phase II trials coordinated by Lyon University Hospital to assess the safety and the efficacy of the immunotherapy with domvanalimab + zimberelimab combination in patients with advanced rare cancers-The B3 Thymomas and Thymic Carcinomas Cohort
Michaël Duruisseaux, Benjamin Besse, Nicolas Girard, Eric Dansin, Sophie Cousin, Julien Mazieres, Ludovic Doucet, Anne Madroszyk, Laurent Greillier, Charles Ricordel, Sarah Cavaillon, Celine Mascaux, Cécile Vicier, Diego Tosi, Sara Calattini, Vérane Schwiertz, Sylvie Bin, Fabien Subtil, Benoit You, Thomas Pierret
2025 ASCO Annual Meeting, May 2025, Chicago, United States
Poster de conférenceAbstractBackground: In patients with rare cancers, there is an unmet medical need for investigating innovative therapeutics. Indeed, these diseases are rarely assessed in clinical trials. Thymic epithelial tumors (TET) are rare heterogeneous thoracic malignancies. B3 TET and thymic carcinomas are more aggressive and prone to metastatic spreading. The standard 1st line treatment relies on platinum-based chemotherapy. Consensual 2nd line treatment has not been identified yet. Several studies showed limited efficacy of PD-1 blockade in B3 TET and thymic carcinomas. Concurrent blockage of TIGIT and PD-1 immune checkpoint B3 TET may improve outcomes according to translational studies. Methods: IMMUNORARE5 (NCT06790706) is a platform of 5 single arm phase II trials testing the safety and efficacy of Domvanalimab (anti-TIGIT) and Zimberelimab (anti PD-1) in 5 independent cohorts of rare cancers. The trial, sponsored by Lyon University Hospital, is conducted in 15 French centers, in partnership with the corresponding French national reference centers. The B3 TET and thymic carcinomas cohort, led in collaboration with the RYTHMIC Network (www.rythmic.org), will enroll 26 patients after failure of at least one line of platinum-based chemotherapy, with evaluable lesions at baseline according to RECIST criteria. Patients previously treated with immunotherapy are not eligible. Patients will receive Domvanalimab and Zimberelimab intravenous, every three weeks, until disease progression or unacceptable toxicity. The primary endpoint is the progression-free survival rate at 6 months. The secondary endpoints are overall response rate and duration of the response, progression-free survival, overall survival and tolerability. The trial is designed with a two-stage Simon design, with early termination for futility (5% one-sided alpha level, 80% power). The treatment would be considered interesting if the percentage of patients free from disease progression at 6-months is statistically higher than 40%; 65% is expected. Translational research projects will be developed aiming at deciphering cellular and molecular mechanisms involved in response to treatment. Moreover, data from the prospective database of the RYTHMIC network will be investigated to build a synthetic historical arm representative of the efficacy of the standard treatments in a similar population of patients.
Enhancing colistin efficacy against multidrug-resistant Klebsiella pneumoniae using farnesol-loaded lipid nanoparticles
F D Imtiyaz, H Grau, C Faivre, Sandrine Marchand, T Henry, R Bonnin, L Dortet, N Anton, M Collot, J M Buyck, F Tewes
ESCMID Global 2025, Apr 2025, Vienne, Austria
Poster de conférenceAbstractBackground We previously demonstrated that farnesol-loaded lipid nanoparticles (F-LNPs) enhance colistin (CST) efficacy against Acinetobacter baumannii [1] and Escherichia coli [2]. In this study, we investigated the broader applicability of F-LNPs againstother Gram-negative bacteria, focusing on mechanisms of action and CST resistance prevention. Methods Checkerboard assays evaluated F-LNPs as a CST adjuvant against Pseudomonas aeruginosa (n=6) and Klebsiella pneumoniae (n=18) isolates. Effects on the bacterial inner (IM) and outer membrane (OM) were studied, followed by resistanceprevention via serial MICs and zeta potential (ZP) measurements. The efficacy of the combinations was evaluated in Galleriamellonella larvae infection models. Results F-LNPs had minimal impact on P. aeruginosa but significantly enhanced CST efficacy against all K. pneumoniae isolates in aconcentration- and isolate-dependent manner, achieving up to 1024-fold MIC reduction for an mcr1isolate (Fig.1). Mechanistic studies using nitrocefin, propidium iodide, and SYTOX™ blue showed that F-LNPs alone increased OM and IMpermeability, effects further amplified in combination with CST (Fig.2A-C). To further investigate OM destabilisation, thecombination was tested on CST-resistant K. pneumoniae strains with LPS modifications incorporating phosphoethanolamine (mcr-1), 4-amino-4-deoxy-L-arabinose (arnT), or both. F-LNPs enhanced CST efficacy by 4- to 1024-fold across all isolates,with no clear correlation between LPS modification type/extent and efficacy enhancement. This suggests that F-LNPs do notspecifically interact with lipid A. Additionally, electron microscopy revealed no visible OM alteration with F-LNPs alone,indicating minimal OM destabilisation by F-LNPs alone (Fig.2D). Resistance prevention studies demonstrated that in mcr1 K.pneumoniae , CST alone led to resistance after 11 passages (MIC≥1024 mg/L), while CST-F-LNP combination maintained alow MIC (0.03 mg/L). High CST resistance was associated with a significant ZP shift (-25.5±3.1 to -14.4±2.9 mV), whereasCST-F-LNP preserved a near-initial ZP (Fig.3). Similar trends were observed in arnT and mcr1-arnT bearing isolates. In vivo ,CST-F-LNP combination improved survival in larvae infected with 10^6 CFU/larva, achieving 43% survival on day 7, comparedto 0% with CST alone. Conclusions Our results highlight the potential of CST-F-LNP combinations to overcome K. pneumoniae resistance by enhancingmembrane permeabilisation and reducing resistance development.
Epicardial Signaling Regulates Myocardial Contractility Via Mirna
Canan G Nebigil
Circulation Research. American Heart Association's Basic Cardiovascular Sciences Scientific Sessions 2023, Nov 2023, Philadelphia, United States. 133 (Suppl_1), 2023
Poster de conférenceAbstractBackground: A congenital left ventricular aneurysm is a rare cardiac malformation that maycause heartfailure, ventricular wall rupture, ventricular arrythmia or sudden cardiac death. However, mechanisms of congenital left ventricular aneurysm are not known. Paracrinesignals from cardiomyocytes, such as a cardiokine, prokineticin-2, can activate EPDCsdifferentiation in adult heart to promote neovascularization. How the reciprocal interaction viaprokineticin and miRs from epicardium to cardiomyocytes affect heart growth and function,and how EMT-related events contributecardiomyocyte proliferation and function areunknown. MicroRNA (miR124) has an important role in the adult heart, however, its role incardiac development is unknown. <div>Results:<p>Here in this study, by deletion of a prokineticin-2 receptor PKR1 through epicardialcell linage tracing at the different developmental stages of mice embryos, we found that thesemice exhibited ventricular rupture and embryonic lethality. Indeed, miR-124 was significantlyupregulated in PKR1-deficient epicardial cells both in vitro and in vivo, whereas ectopicexpression of these miRs in epicardial cells resulted in the reduced expression of SNAI2 andsubsequently led to impaired EMT and EMT-related events such impaired migration andincreased apoptosis. Wild type mice cardiomyocytes that were cultured in condition mediumderived from PKR1-deficient epicardial cells had a lower beating rate and contractility. Treatment of the cardiomyocytes with miR-124mimic exhibited the same phenotype, that wasrestored by miR-124 inhibitor, indicating involvement of mir124 in epicardium-cardiomyocyte communication and regulation of cardiomyocyte contractility.</p></div> <div>Conclusion:<p>These finding reveals a key signaling pathway in which a cardiokine,prokineticin-2 promotes EMT to form EPDCs and their migration in an autocrine manner, andsupports myocardial growth and contractility through repressing miR124. Our study mayprovide novel insight in etiology of congenital defects and new strategies to promotemyocardial regeneration.</p></div>
Strategies for the screening of glucose tolerance abnormalities and diabetes in people with cystic fibrosis: a French position statement
L. Weiss, P. Reix, H. Mosnier-Pudar, O. Ronsin, J. Beltrand, Q. Reynaud, L. Mely, P.-R. Burgel, N. Stremler, L. Rakotoarisoa, A. Galderisi, K. Perge, N. Bendelac, M. Abely, L. Kessler
46th European Cystic Fibrosis Conference, Jun 2023, Vienne, Austria. 22, pp.S158-S159, 2023, ⟨10.1016/S1569-1993(23)00678-1⟩
Poster de conférenceAbstract 11270: SGLT2 Expression in the Coronary Microvessel Endothelium and Cardiomyocytes of Cardiac Patients: Determinant Role of Low-Grade Inflammation and Induction of Endothelial Dysfunction
Ali Mroueh, Walaa Fakih, Dal-Seong Gong, Cyril Auger, Kensuke Matsushita, Olivier Morel, Jean-Philippe Mazzucotelli, Valerie Schini-Kerth
American Heart Association AHA Scientific Sessions 2022, Nov 2022, chicago, United States. Circulation. 2022;146:A11270, 146 (Suppl_1), 2022, ⟨10.1161/circ.146.suppl_1.11270⟩
Poster de conférenceAbstractIntroduction: Sodium-glucose co-transporter2 inhibitors (SGLT2i) showed benefit in major cardiovascular diseases characterized by low-grade inflammation. However, the role and function of SGLT2 in the heart remain unclear. Hypothesis: This study evaluated whether SGLT1/2 are expressed in the heart of patients with cardiac diseases, and determined the role of low-grade inflammation and the functional consequences. Methods: Human left ventricle (LV) biopsies were collected from 17 patients with aortic and mitral valves stenosis or hypertrophic cardiomyopathy at Strasbourg Hospital. Cultured endothelial cells (EC) were from pig coronary arteries. Expression levels were assessed by RT-qPCR, Western blot analysis and immunofluorescence staining, and the level of oxidative stress and nitric oxide (NO) using fluorescent probes. Results: SGLT1/2 protein levels were observed in the LV of cardiac patients and correlated p-p65 NFκB levels. SGLT2, VCAM-1 and TNF-α staining was observed in the endothelium of coronary microvessels and, to some extent, cardiomyocytes. TNF-α upregulated SGLT1 and 2, VCAM-1, AT1R and ACE expression and decreased that of eNOS and the bradykinin-stimulated NO formation in EC. The stimulatory effect of TNF-α was inhibited by an NF-kB inhibitor and SGLT2 siRNA but not by SGLT1 siRNA. Oxidative stress in LV sections and TNF-α-treated EC was inhibited by VAS-2870 (NADPH oxidase inhibitor), losartan (AT1R antagonist) and empagliflozin (SGLT2i), and in LV by infliximab (TNF-α receptor inhibitor). Conclusions: The findings indicate that SGLT2 is expressed in the LV of cardiac patients in the coronary endothelium and cardiomyocytes, and associated with their low-grade inflammatory status. Moreover, TNF-α upregulated the AT1R/NAPDH oxidase/SGLT2 crosstalk to sustain oxidative stress promoting endothelial dysfunction. Thus, SGLT2 appears as an interesting target to protect the coronary microcirculation.
Targeting Translation By Disrupting The Newly Identified Prohibitin-eif4f Complex As A Novel Therapeutic Strategy In Chronic Lymphocytic Leukemia
A. Largeot, V. Klapp, S. Gonder, E. Viry, M. Szpakowska, D. Perez Hernandez, G. Dittmar, A. Chevigné, L. Ysebaert, B. Stamatopoulos, L. Desaubry, J. Paggetti, E. Moussay
27th Congress of the European Hematology Association, Jun 2022, Vienne & Online, Italy. 6, pp.518-519, 2022, ⟨10.1097/01.HS9.0000845364.22279.91⟩
Poster de conférenceAbstractBackground: CLL is the most common type of leukemia in adult, and despite great advance in the standard of care in the last decades, there is still no cure available. CLL cells are dependent on their microenvironment for proliferation and survival. Microenvironmental stimuli are associated with an increase in translation globally but also at the level of specific transcripts, including Myc (Yeomans et al., 2016, Blood). Aims: Here, we tested the targeting of translation initiation in CLL as a novel therapeutic strategy and identified prohibitin as partner of the translation initiation machinery. Methods: In order to target translation, we used the FL3 molecule, a synthetic flavagline, which is a known inhibitor of translation initiation in other types of cancers (Boussemart et al., 2014, Nature). This drug binds to the scaffold proteins prohibitins (PHBs), but the mechanism for translation inhibition is still unclear. PHBs are crucial partners for the activation of the Ras-Raf-MEK-ERK pathway, ultimately leading to eIF4E (a factor of the eIF4F translation initiation machinery) phosphorylation and to activation of translation. Results: We confirmed the increase in translation in human primary CLL cells upon stimulation (A). In addition, we showed that in the Eµ-TCL1 murine model, CLL cells have a higher translation rate compared to normal B cells and T cells. In vitro treatment of human CLL cells (either cell lines or primary patient samples) with FL3 leads to a decrease in translation rate. It is associated with a strong decrease of cell viability (B) and apoptosis induction, even at a low nanomolar dose. By western blot, we showed that in CLL, contrary to other cancer types, FL3 does not prevent RAF1 and ERK phosphorylation. However, eIF4e phosphorylation is impaired. This observation strongly suggests a direct impact of the drug through its molecular target PHBs on the translation initiation machinery. By co-immunoprecipitation, proximity-ligation assay (C) and Nanoluciferase experiments, we demonstrated the interaction between PHBs and the members of the eIF4F complex. In addition, gene silencing of PHB by shRNA leads to a decrease in translation. This indicates for the first time a direct role of PHBs in translation, and allows a better understanding of FL3’s mechanism of action. We thus propose that PHB is necessary for the correct assembly of the eIF4F complex. Interestingly, we showed that the loss of eIF4e phosphorylation is neither responsible for the impairment of translation nor for the decrease in cell proliferation. By pulse SILAC experiments, we determined the proteins that are subjected to increased translation upon TLR stimulation, and to decreased translation upon FL3 treatment. Among others, oncogenes such as c-MYC or ETS-1 (D) have been identified. In vivo treatment of mice with FL3 after TCL1 adoptive transfer leads to a significant delay in CLL progression and an increased survival (E-F), demonstrating the relevance and possible impact of this molecule. Finally, high expression of translation initiation-related genes correlated with poor survival and unfavorable clinical parameters in CLL patients (G). Summary/Conclusion: To conclude, we identified translation initiation as a potential therapeutic target in CLL. The use of the inhibitor of translation FL3, efficiently impairs proliferation of CLL cells in vitro and controls CLL development in vivo. Moreover, we start to unveil the mechanism of action of this molecule, by the identification of a novel interactor of the translation initiation machinery, namely prohibitins.
Clinical practice versus guidelines for the screening of Cystic Fibrosis-Related Diabetes (CFRD): a French survey of 47 centres
L. Weiss, O. Ronsin, Q. Reynaud, M. Abely, L. Mely, P.R. Burgel, J. Beltrand, L. Kessler
45th European Cystic Fibrosis Conference, Jun 2022, Rotterdam, Netherlands. 21, pp.S116, 2022, ⟨10.1016/S1569-1993(22)00510-0⟩
Poster de conférenceAbstractBackground: Prevalence of CFRD increases with age. In many studies, CFRD was shown to be associated with increased morbidity, including poorer nutritional status and lower respiratory function. Guidelines recommended annual CFRD screening by using oral glucose tolerance testing (OGTT). Currently, continuous glucose monitoring (CGM) is commonly used by CF centres for diagnosing CFRD. Objective: We sought to analyse current CFRD screening practices in French CF centres in light of international recommendations. Methods: A web-based questionnaire was distributed between December 1, 2020, and January 31, 2021, among 47 cystic fibrosis centres including paediatric, adult, and mixed units. The questionnaire was formulated by the authors, all members of the diabetes study group of the French Cystic Fibrosis Society. Results: All 47 CF centres participated in the survey. In accordance with guidelines, 92.8% of CF centres performed annual OGTT. Overall, 86.3% of CF centres performed 1-and 2-hour blood glucose determinations following OGTT. OGTT was conducted before 10 years of age in 73% of paediatric centres in specific clinical settings. CGM was employed for CFRD screening in 86.5% of centres. CGM was carried out in 69% of centres after glucose tolerance abnormalities had been detected in OGTT. In patients without exocrine pancreatic insufficiency, OGTT was performed in 29.5% of centres. CGM is also offered more frequently in patients with pancreatic insufficiency (97%) versus those without (51.4%). Conclusions: French CF centres follow CFRD screening guidelines. Most CF centres used OGTT and CGM for CFRD screening. In French centres, CFRD screening differs depending on the patient’s pancreatic status. However, the heterogenicity of practices highlight the difficulties of the centres in positioning screening tests, in particular CGM. Further studies are required to determine CGM’s precise usefulness in CFRD screening and its place in guidelines.
Continuous glucose monitoring in people with cystic fibrosis highlights different glucose tolerance abnormalities according to pancreatic exocrine status
L. Rakotoarisoa, L. Weiss, F. Lefebvre, M. Porzio, B. Ravoninjatovo, M. Abely, I. Danner-Boucher, S. Dubois, F. Troussier, A. Prevotat, G. Rault, L. Kessler
45th European Cystic Fibrosis Conference, Jun 2022, Rotterdam, Netherlands. 21, pp.S74, 2022, ⟨10.1016/S1569-1993(22)00381-2⟩
Poster de conférenceAbstractObjectives: In people with cystic fibrosis ( pwCF) CGM highlighted glucose tolerance abnormalities not revealed by oral glucose tolerance testing (OGTT). About 85% of the CF population have pancreatic exocrine insufficiency early in life, which is linked to worse clinical outcomes. We intend to compare continuous glucose monitoring (CGM) parameters in cystic fibrosis (CF) patients according to pancreatic exocrine status. Methods: From 2009 to 2016, people with CF aged ≥10 years without Cystic Fibrosis-Related Diabetes (CFRD) were enrolled in a prospective observational multicentre study. CGM and OGTT were realised 3 months apart annually during 5 years. CGM parameters were analysed in pwCF with normal glucose tolerance (NGT), impaired glucose tolerance (IGT), and newly diagnosed CFRD according to presence of pancreatic exocrine sufficiency (PS) or insufficiency (PI). Results: One hundred fifty-seven patients (79 female/78, age: 21 ± 11 years, HbA1c: 5.8 ± 0.4%, Z-score: − 0.55+1.09, FEV1: 77 ± 24%, F508del homozygous: 47.6%) were included. Overall, 547 OGTTs and 501 CGMs were performed in 147 pwCF, including 122 patients with PI and 25 with PS. In PS patients, 84% displayed NGT, 12% IGT, and 4% CFRD vs 58%, 32%, and 10% ( p = 0.05) in PI patients. Among normal OGTT patients with PS, time in glucose range (70–140 mg/dL) was significantly increased, 97% (93, 99) vs 92% (85, 96), p < 0.001, and time above glucose range significantly decreased, 1% (0, 2) % vs 6% (2, 13), versus PI patients. There were significant differences in terms of standard deviation and AUC >140 mg/dL/ day, respectively 13.0 (12.0, 16.0) in PS patients vs 19.0 (16.0, 25.0) in PI patients, p < 0.001; and 0.0 (0.0, 0.3) in PS patients vs 0.8 (0.2, 2.3) in PI patients, p < 0.001. No significant differences were found among participants with impaired glucose tolerances. Conclusion: In people with CF and normal OGTT, CGM revealed significant glucose tolerance abnormalities and specific glucose profile in presence of pancreatic exocrine insufficiency.
Efficacy of dabrafenib-trametinib combination in BRAF V600E-mutated metastatic non-small cell lung cancer: Results of the IFCT-2004 BLaDE cohort
Aurélie Swalduz, Michele Beau-Faller, David Planchard, Julien Mazieres, Sophie Bayle, Didier Debieuvre, Vincent Fallet, Margaux Geier, Alexis B Cortot, Sebastien Couraud, Catherine Daniel, Eric Pichon, Pascale Missy, Franck Morin, Virginie Westeel, Jean-Bernard Auliac, Remi Veillon
2022 ASCO Annual Meeting, Jun 2022, Chicago, United States. 40 (16_suppl), pp.9082-9082
Poster de conférenceAbstractBackground: BRAF V600E mutations occur up to 2% of advanced non-small cell lung (NSCLC). Dabrafenib-trametinib (D-T) combination was associated with improved OS rates in phase II study and was approved in the 1st-line setting and further. The IFCT-2004 BLaDE study reports the D-T combination efficacy in a large French real-world multicenter cohort of advanced BRAF V600E-mutated NSCLC. Methods: Patients (pts) with advanced NSCLC harboring BRAF V600E mutation diagnosed between 01.01.2016 and 31.12.2019 and treated with D-T combination (D 300 mg + T 2 mg daily) whatever the treatment line were included. Demographic, clinical, pathological data were collected as well as data of efficacy and reason of treatment discontinuation. The primary endpoint was 12 months-OS rate in pts receiving the D-T as 2nd-line or subsequent treatment (L2+). Results: 163 pts were included in 54 centers through 32 national testing labs: 50.3 % were female, 30.2% never-smokers, 95.1 % had adenocarcinoma and PDL1 was > 1% in 78.2%. Median age was 68.3 years. At D-T initiation, 80.8 % of pts were PS 0/1, 93.9 % were stage IIIB/C ineligible for surgery or local therapy and IV, 20.9% had brain metastases and 27% received D+T as 1st line treatment (L1). At the data cutoff (30.06.2021), median (m) follow-up was 27.4 months [95% CI 22.2-31.9] and 47 pts (28.8%) remained on study treatment. 12 months-OS rate in pts receiving D+T in L2+ (n = 119) was 67.4% [95% CI 57.8-75.3] with a median progression-free survival (mPFS) of 10.4 months [95% CI 7.3- 13.1]. In the 44 pts receiving D+T in L1, 12 months-OS rate was also 67.4% [95% CI 51.2-79.3] with a mPFS of 18.2 months [95% CI 7.7-21.3]. Objective response rates were 73.8% [95% CI 65.5 - 82.2] and 82.9% [95% CI 71.4 - 94.4], disease progression was observed as best response in 3.7% [95% CI 0.1 - 7.3] and 0% in L2+ and L1, respectively. Other efficacy results are detailed in the table. D-T discontinuation for toxicity was reported in 10.3% of pts. 51.2% and 43.7% of pts received subsequent treatment in L2+ and L1 respectively. For L2+ pts, subsequent treatments were immunotherapy (IO)-based in 37.2 % and chemotherapy in 58.3%. For L1 pts, subsequent treatments were (IO)- based in 42.9% and chemotherapy in 42.7%. Conclusions: Our series confirms significant efficacy of D-T combination in BRAF V600E-mutated metastatic NSCLC. These results in real-world conditions are consistent with registration studies but also support its use in 1st line setting.
Kinetics and oxygen dependence of uptake of nanozeolites by human glioblastoma cells
C Hélaine, Hayriye Özçelik, S. Komaty, A. Amedlous, Sajjad Ghojavand, Didier Goux, Richard Retoux, Svetlana Mintova, Valable Samuel
Groupe Français des Zéolithes, Mar 2022, Voguë, France
Poster de conférenceNew anti-cancer natural product flavaglins
Canan Nebigil
13th Tetrahedron Symposium, 2012, Amsterdam, Netherlands. 2012
Poster de conférenceRole of Prokineticin receptor 1 in regulating heart and kidney functions
Canan Nebigil
International Myology Congress, May 2011, Lille, France. 2011
Poster de conférence- Pré-publication, Document de travail
Refractory oral manifestations of Crohn's disease
A. Khemis, R. Lan, F. Amatore, Jm Reimund, F. Campana, A. Falguière
2026
Pré-publication, Document de travailAbstract<div><p>Introduction: Persistent oral manifestations of Crohn's disease (CD), despite intestinal remission, remain a therapeutic challenge. This study aimed to describe two such cases and review available literature on management strategies.</p><p>Case reports: Despite infliximab and methotrexate, the first patient developed progressive oral lesions with only partial improvement under upadacitinib. The second achieved digestive remission under golimumab and successfully controlled oral lesions with intralesional corticosteroids.</p><p>Discussion: A literature review (Pubmed, ScienceDirect; up to January 2025) identified 17 articles involving 75 patients. Oral lesions appeared independently (54%), concomitantly with digestive disease (20%), or preceded it (26%). Therapeutic responses were variable, with limited efficacy of anti-TNF antibodies, immunosuppressants, and corticosteroids. Anti-IL12/23 antibodies showed promising results in isolated cases, while data on anti-IL-23 antibodies and JAK inhibitors remain lacking.</p></div> <div>Conclusion:<p>Due to the absence of standardized therapeutic protocols, a personalized, multidisciplinary approach is essential. Further studies are needed to better define effective treatments.</p></div>
GLP-1R associates with VAPB and SPHKAP at ERMCSs to regulate β-cell mitochondrial remodelling and function
Gregory Austin, Affiong I Oqua, Liliane El Eid, Mingli Zhu, Yusman Manchanda, Priyanka Peres, Helena Coyle, Yelyzaveta Poliakova, Karim Bouzakri, Alex Montoya, Dominic J. Withers, Michele Solimena, Ben Jones, Steven J Millership, Steffen Burgold, David C.A. Gaboriau, Endre Majorovits, Evelyn Garlick, Maria Lima, Inga Prokopenko, Jonathon Nixon-Abell, Andreas Müller, Alejandra Tomas
2025
Pré-publication, Document de travailAbstractGlucagon-like peptide-1 receptor (GLP-1R) agonists (GLP-1RAs) ameliorate mitochondrial health by increasing mitochondrial turnover in metabolically relevant tissues. Mitochondrial adaptation to metabolic stress is crucial to maintain pancreatic β-cell function and prevent type 2 diabetes (T2D) progression. While the GLP-1R is well-known to stimulate cAMP production leading to Protein Kinase A (PKA) and Exchange Protein Activated by cyclic AMP 2 (Epac2) activation, there is a lack of understanding of the molecular mechanisms linking GLP-1R signalling with mitochondrial and β-cell functional adaptation. Here, we present a comprehensive study in β-cell lines and primary islets that demonstrates that, following GLP-1RA stimulation, GLP-1R-positive endosomes associate with the endoplasmic reticulum (ER) membrane contact site (MCS) tether VAPB at ER-mitochondria MCSs (ERMCSs), where active GLP-1R engages with SPHKAP, an A-kinase anchoring protein (AKAP) previously linked to T2D and adiposity risk in genome-wide association studies (GWAS). The inter-organelle complex formed by endosomal GLP-1R, ER VAPB and SPHKAP triggers a pool of ERMCS-localised cAMP/PKA signalling via the formation of a PKA-RIα biomolecular condensate which leads to changes in mitochondrial contact site and cristae organising system (MICOS) complex phosphorylation, mitochondrial remodelling, and β-cell functional adaptation, with important consequences for the regulation of β-cell insulin secretion and survival to stress.
In vivo functional profiling and structural characterisation of the human Glp1r A316T variant
Liliane El Eid, Kieran Deane-Alder, Roxana-Maria Rujan, Zamara Mariam, Affiong Oqua, Yusman Manchanda, Matthew Belousoff, Jorge Bernardino de la Serna, Kyle Sloop, Guy Rutter, Alex Montoya, Dominic Withers, Steven Millership, Karim Bouzakri, Ben Jones, Christopher Reynolds, Patrick Sexton, Denise Wootten, Giuseppe Deganutti, Alejandra Tomas
2025
Pré-publication, Document de travailAbstractAbstract Glucagon-like peptide-1 receptor agonists (GLP-1RAs) are effective therapies for type 2 diabetes (T2D) and obesity, yet patient responses are variable. Variation in the human Glp1r gene might be directly linked to therapeutic responses. A naturally occurring missense variant, A316T, protects against T2D and cardiovascular disease. Here, we have generated and characterised a human Glp1r A316T mouse model. Human Glp1r A316T/A316T mice displayed lower fasting blood glucose versus wildtype littermates, even under metabolic stress, and exhibited alterations in islet cytoarchitecture and α/β-cell identity under a high-fat, high-sucrose diet. This was however associated with blunted responses to GLP-1RAs in vivo . Further investigations in rodent and human β-cell models demonstrated that human Glp1r A316T exhibits characteristics of constitutive activation but dampened GLP-1RA responses. Results are further supported by cryo-EM analyses and molecular dynamics simulations of GLP-1R A316T structure, collectively demonstrating that the A316T variant governs basal GLP-1R activity and pharmacological responses to GLP-1R-targeting therapies. Teaser The Glp1r A316T missense variant displays improved glucose tolerance but impaired pharmacological incretin responses in vivo .
Lipophilic molecular rotor to assess the viscosity of oil core in nano-emulsion droplets
Mohamed Elhassan, Carla Faivre, Halina Anton, Guillaume Conzatti, Pascal Didier, Thierry Vandamme, Alteyeb S Elamin, Mayeul Collot, Nicolas Anton
2024
Pré-publication, Document de travailAbstract<div>Hypothesis<p>Characterization of nanoscale formulations is a continuous challenge. Size, morphology and surface properties are the most common characterizations. However, physicochemical properties inside the nanoparticles, like viscosity, cannot be directly measured. Herein, we propose an original approach to measuring dynamic viscosity using a lipidic molecular rotor solubilized in the core of nano-formulations. These molecules undergo conformational changes in response to viscosity variations, leading to observable changes in fluorescence intensity and lifetime, able to sense the volume properties of dispersed nano-domains.</p></div> <div>Experiments<p>The lipophilic molecular rotor (BOPIDY derivatives) was specifically synthesized and characterized as oil viscosity sensing in large volumes. A second part of the study compares these results with rBDP-Toco in nano-emulsions. The objective is to evaluate the impact of the formulation, droplet size and composition on the viscosity of the droplet's core.</p></div> <div>Findings<p>The lipophilic rotor showed a universal behavior whatever the oil composition, giving a master curve. Applied to nano-formulations, it discloses the viscosity in the nano-emulsion droplets, enabling the detection of slight variations between reference oil samples and the nanoformulated ones. This new tool opens the way to the fine characterization of complex colloids and multi-domain nano and micro systems, potentially applied to hybrid materials and biomaterials.</p></div>
- Rapport
Isolation of Splenic Microvesicles in a Murine Model of Intraperitoneal Bacterial Infection
Hanine El Itawi, Fareeha Batool, Céline Stutz, Abdul Wahid Qureshi, Fatiha El Ghazouani, Olivier Huck, Florence Toti
Journal of Visualized Experiments. 2022
RapportAbstractMicrovesicles (MVs) are submicron fragments released from the plasma membrane of activated cells that act as proinflammatory and procoagulant cellular effectors. In rats, spleen MVs (SMVs) are surrogate markers of pathophysiological conditions. Previous in vitro studies demonstrated that Porphyromonas gingivalis (P. gingivalis), a major periodontal pathogen, enables the endothelial shedding and apoptosis while lipopolysaccharide (LPS) favors the shedding of splenocyte-derived microvesicles (SMVs). In vivo studies showed the feasibility of pharmacological control of SMV shedding. The present protocol establishes a standardized procedure for isolating splenic SMVs from the P. gingivalis acute murine infection model. P. gingivalis infection was induced in young C57BL/6 mice by intraperitoneal injection (three injections of 5 x 107 bacteria/week). After two weeks, the spleens were collected, weighed, and the splenocytes were counted. SMVs were isolated and quantified by protein, RNA, and prothrombinase assays. Cell viability was assessed by either propidium iodide or trypan blue exclusion dyes. Following splenocyte extraction, neutrophil counts were obtained by flow cytometry after 24 h of splenocyte culture. In P. gingivalis-injected mice, a 2.5-fold increase in spleen weight and a 2.3-fold rise in the splenocyte count were observed, while the neutrophils count was enhanced by 40-folds. The cell viability of splenocytes from P. gingivalis-injected mice ranged from 75%-96% and was decreased by 50% after 24 h of culture without any significant difference compared to unexposed controls. However, splenocytes from injected mice shed higher amounts of MVs by prothrombinase assay or protein measurements. The data demonstrate that the procoagulant SMVs are reliable tools to assess an early spleen response to intraperitoneal P. gingivalis infection.
- Thèse
Implication des vésicules extracellulaires dans l’inflammation parodontale
Pierre-Yves Gegout
Médecine humaine et pathologie. Université de Strasbourg, 2026. Français. ⟨NNT : 2026STRAJ002⟩
ThèseAbstractLa parodontite est une maladie inflammatoire chronique caractérisée par la destruction des tissus de soutien de la dent, conséquence d’une réponse immunitaire exacerbée où Porphyromonas gingivalis semble jouer un rôle clé. Les vésicules extracellulaires (VE), nanostructures sécrétées par les cellules, participent à la communication intercellulaire et au transport de biomolécules impliquées dans l’inflammation. Des VE issues de cellules épithéliales orales infectées par P. gingivalis ont été caractérisées par NTA, puis une analyse de leurs effets inflammatoires sur des cellules naïves et de leur contenu en microARN a été effectuée. Les résultats montrent que ces VE sont pro-inflammatoires et contiennent davantage de microARN modulant les voies de signalisation inflammatoires de l’hôte. Ces vésicules semblent avoir un rôle dans la propagation de l’inflammation parodontale. Cependant, leur potentiel comme vecteurs naturels de biomolécules ouvre des perspectives thérapeutiques innovantes pour le contrôle de l’inflammation et la régénération parodontale.
Blood biomarkers of muscle atrophy
Coralie Delabrise
Life Sciences [q-bio]. Université Clermont Auvergne (UCA), 2025. English. ⟨NNT : ⟩
ThèseAbstractThis thesis work aimed to identify reliable blood biomarkers (mRNA) for early detection of muscle atrophy by RT-qPCR, independently of sex, age, BMI, and pathology. The study was based on 5 different patient cohorts with various pathologies (end-stage chronic kidney disease [CKD], early lung or abdominal cancers). The PROMETHE cohort (28 patients) enabled the identification of 1,510 differentially expressed RNAs using RNAseq analysis. An sPLS regression selected 13 blood biomarkers under-expressed in patients undergoing atrophy. They were inversely correlated with muscle atrogenes (MuRF1, MAFbx) that are directly involved in the muscle atrophy process. Using an AUC ROC analysis, the most predictive genes achieved 80.9% sensitivity and 96.3% specificity. These biomarkers seem to detect muscle atrophy at an early stage. A randomized crossover study (58 CKD patients) evaluated the impact of acetate-free dialysate on muscle mass. Despite a dramatic prevalence of cachexia (86% initially, 97% after 1 year), no improvement was observed with acetate-free dialysate, and no worsening of muscle mass was detected by bioelectrical impedance analysis (BIA). However, mRNA levels of 5 blood biomarkers revealed significant worsening of atrophy during the study, thus demonstrating a superior sensitivity compared to BIA for detecting atrophy. The BioSAM cohort (53 patients) allowed us to study biomarker evolution in patients with pancreatic or colon cancer before, during, and after chemotherapy. Muscle mass evolution was monitored using CT scan at the 3rd lumbar vertebra, enabling calculation of the Psoas Muscle Index (PMI). Only 20% of patients had a PMI below the muscle atrophy threshold at the beginning of the study and, surprisingly, little evolution of muscle mass was observed during the 120-day study period. However, 6 biomarkers were significantly under-expressed between D0 and D120, confirming their ability to detect catabolic situations even when PMI remains normal. These data suggest early detection of muscle atrophy by blood biomarkers. Finally, we demonstrated in cultured human muscle cells that these blood biomarkers were exported from extracellular vesicles. Moreover, biomarker mRNA levels were decreased following catabolic treatment (dexamethasone), mimicking the decrease in biomarker mRNA levels in the blood of patients undergoing atrophy. This translational research establishes a panel of 13 blood biomarkers enabling non-invasive early detection of muscle atrophy, validated across multiple pathologies. These markers, more sensitive than conventional imaging, pave the way for personalized medicine for early identification of at-risk patients and objective evaluation of therapeutic interventions. A patent has been filed (EP21306403.3), and perspectives include optimization to 2-3 biomarkers and the use of digital PCR to improve the identification of atrophying patients. The discovery of blood biomarkers has opened a new research field with genes whose function is largely unknown, at least in skeletal muscle. We therefore initiated more fundamental studies to define whether these biomarkers were merely witnesses of atrophy or played a role in the atrophy process. Two of the most promising biomarkers exhibited expression modifications that could be linked to the regulation of muscle protein homeostasis. They are indeed linked to the SRCAP and INO80 complexes respectively, involved in chromatin modification via histone variants. It is tempting to hypothesize that they act on global transcription. This preliminary, but promising study, opens new perspectives for understanding the molecular mechanisms of muscle atrophy and the potential development of innovative therapeutic strategies.
Déterminants cliniques et biomarqueurs de la gravité dans l’infection à SARS-CoV-2
Pierrick Le Borgne
Biologie cellulaire. Université de Strasbourg, 2025. Français. ⟨NNT : 2025STRAJ067⟩
ThèseAbstractCette thèse explore les déterminants cliniques et biologiques de la gravité du COVID-19 à travers trois axes complémentaires. L’analyse des ectonucléotidases sériques montre que l’activité CD73 augmente chez les patients hypoxémiques, alors qu’une activité faible s’associe à un profil inflammatoire et à une évolution défavorable. A l’inverse, CD39 reste sans lien avec la sévérité. L’étude de la charge virale nasopharyngée à l’admission ne met en évidence aucune association avec la sévérité ou la mortalité, renforçant le rôle majeur de la réponse immunitaire de l’hôte. Enfin, une cohorte dédiée analysera les vésicules extracellulaires circulantes pour caractériser leur implication dans l’immunothrombose et leur valeur potentielle comme biomarqueurs dynamiques. L’ensemble de ces travaux soutient une approche multimodale intégrant biomarqueurs enzymatiques, viraux et vésiculaires pour affiner la stratification du risque aux urgences.
Syndrome de détresse respiratoire aiguë : élaboration d’un modèle d’organoïdes pulmonaires dérivés de patients et étude des paramètres de la fibrinolyse systémique dans une approche translationnelle
Julien Demiselle
Médecine humaine et pathologie. Université de Strasbourg, 2025. Français. ⟨NNT : 2025STRAJ019⟩
ThèseAbstractLe Syndrome de Détresse Respiratoire Aiguë (SDRA) est une pathologie fréquente, caractérisée par une hypoxémie sévère et une atteinte diffuse de la barrière alvéolo-capillaire. Malgré les progrès de la prise en charge ventilatoire, la mortalité reste élevée, et les échecs thérapeutiques soulignent la nécessité d’une meilleure compréhension de sa physiopathologie.Ce travail de thèse s’est articulé autour de deux axes : premièrement, nous avons développé un protocole original de culture d’organoïdes pulmonaires à partir de tissu humain sain, sans recours au Matrigel, dont les limites (variabilité, orientation interne des structures) sont établies. Les organoïdes obtenus, composés de pneumocytes de type 2 et de cellules club, avec une orientation « apical-out » reproduisant l’architecture épithéliale du poumon distal.Ensuite, nous avons exploré les liens entre les anomalies de la fibrinolyse systémique et les altérations physiologiques observées au cours du SDRA. À partir d’une cohorte prospective, nous avons mis en évidence une corrélation entre un taux élevé de PAI-1 et une augmentation de l’espace mort alvéolaire — paramètre clé du déséquilibre ventilation/perfusion.Ce travail propose un nouvel outil in vitro pertinent pour l’étude du poumon distal et met en lumière le rôle potentiel de l’état hypofibrinolytique dans la phase initiale du SDRA. Ceci ouvre des perspectives pour une stratification plus fine des patients et l’identification de cibles thérapeutiques futures.
Stratégie de préservation de la vascularisation des îlots pancréatiques au cours de la transplantation à l’aide d’un modèle de sphéroïde de cellules endothéliales et de cellules à insuline
Amira Saidi
Médecine humaine et pathologie. Université de Strasbourg, 2025. Français. ⟨NNT : 2025STRAJ020⟩
ThèseAbstractLe DT1 est une maladie auto-immune avec destruction des cellules β pancréatiques, entraînant une perte de la fonction insulinique et une hyperglycémie en l’absence de traitement. La transplantation d’îlots pancréatiques est une thérapie limitée par une réaction inflammatoire d’ischémie reperfusion, l’IBMIR, responsable de la perte précoce des greffons. Nos résultats montrent que dans un modèle de CEI 2D, le dulaglutide prévient l’EndMT induite par TNF-α/IL-1β et module la voie TGF-β2/Smad (Alk5, Smad2, Smad7). Parallèlement le travail développe un modèle de sphéroïde 3D, stable sur 96h de culture, associant cellules endothéliales intra-insulaires (CEI) et cellules β murines. La mise au point d’un protocole d’immunofluorescence et de transparisation du sphéroïde entier a permis de cartographier la distribution des cellules au sein de la structure 3D et les interactions CEI-cellules β. Ce système standardisé ouvre des perspectives pour le criblage pharmacologique à visée de cytoprotection contre la dysfonction du greffon induite par IBMIR post-transplantation d’îlots.
Modifications de l’épithélium bronchique survenant au cours de la dysfonction chronique du greffon pulmonaire et rôle des microparticules leucocytaires
Benjamin Renaud-Picard
Médecine humaine et pathologie. Université de Strasbourg, 2023. Français. ⟨NNT : 2023STRAJ104⟩
ThèseAbstractLa dysfonction chronique du greffon pulmonaire (CLAD) est la principale complication limitant la survie à long-terme après une transplantation pulmonaire, avec plusieurs phénotypes décrits. La répétition des agressions inflammatoires contre l’épithélium bronchique contribue à son développement. Au cours de ce travail, nous avons détaillé les différences et similitudes histologiques entre les différents phénotypes de CLAD, à l’aide d’un score semi-quantitatif. Nous avons également montré que la technique d’Imaging mass cytometry, spectrométrie de masse utilisant un marquage avec anticorps conjugués aux métaux lourds, permettait l’identification précise de sous-populations cellulaires dans le tissu du greffon pulmonaire. Enfin, après avoir confirmé la présence d’une transition épithélio-mésenchymateuse (TEM) dans les bronchioles de poumons explantés avec CLAD, nous avons montré que les microparticules membranaires pourraient avoir un rôle comme biomarqueur diagnostique du CLAD et comme bioeffecteur en contribuant à la survenue de la TEM dans des cellules BEAS-2B.
Étude des mécanismes d’activation des polynucléaires neutrophiles au cours du choc septique associée à une coagulation intravasculaire disséminée (CIVD)
Louise Chomel
Hématologie. Université de Strasbourg, 2023. Français. ⟨NNT : 2023STRAJ056⟩
ThèseAbstractLa coagulation intravasculaire disséminée (CIVD) est une complication sévère du choc septique. Sa physiopathologie est notamment caractérisée par une activation cellulaire, notamment des polynucléaires neutrophiles (PNN) via les Neutrophils Extracellular Traps (NET) qui capturent les pathogènes, jouant un rôle essentiel dans l’activation de la coagulation et le recrutement de cellules immunitaires. Dans ce travail, nous avons étudié dans les PNN de 80 patients l’expression des TLR (qui reconnaissent les pathogènes) et mis en évidence des différences d’expression dans les formes sévères d’infection. D’autre part, nous avons étudié les protéines associées à l’activation du PNN dans la CIVD du choc septique identifiées par analyse protéomique, révélant le rôle majeur du complexe Mini Chromosome Maintenance dans la survenue de la NETose. Ce résultat confirme le rôle des PNN dans les phénomènes de thrombose et permet d’envisager de nouvelles cibles thérapeutiques dans la CIVD du choc septique.
Optimisation d’une plateforme de criblage de molécules anti-cancéreuses adaptée aux patients et basée sur un modèle de tumeur 3D vascularisé
Anasse Nounsi
Cancer. Université de Strasbourg, 2023. Français. ⟨NNT : 2023STRAJ029⟩
ThèseAbstractLe cancer est actuellement l'une des principales causes de décès à travers le monde. Une guérison peut être obtenue dans différents types de cancers grâce aux traitements actuels. Malheureusement, environ 85% des nouvelles molécules thérapeutiques échouent lors des essais cliniques. Ces échecs entraînent des pertes importantes de temps et d'investissements. Pour remédier à cette situation, une solution prometteuse consiste à développer un modèle in vitro capable de reproduire au mieux la vascularisation et l'environnement tumoral, afin d'améliorer la sélection des molécules thérapeutiques d’intérêt pour réduire l’agressivité tumorale. Notre projet de recherche a pour but de créer des tumoroïdes dérivés de patients (PDT’s) atteints de cancer du poumon. Ce modèle sera utilisé pour évaluer l’efficacité des traitements standards tels que la radiothérapie et la chimiothérapie à base de platine. Ainsi, ce modèle pourrait avoir une valeur prédictive de la réponse des traitements de radiothérapie et de chimiothérapie chez les patients atteins du cancer du poumon. De plus, il a été incorporé à ce modèle une vascularisation permettant de mieux mimer la complexité de l’environnement tumoral. Notre modèle de tumeur reconstruite en 3D est un outil rapide à obtenir qui est prometteur. Il pourrait être relié à un système micro-fluidique, ce qui ouvre de nouvelles perspectives pour les tests précliniques. En effet, cette plateforme centrée sur notre modèle 3D pourrait ouvrir la voie à différents tests de médicaments anti-cancéreux directement sur les tumeurs reconstruites in vitro de chaque patient. Notamment, cela pourrait permettre différents tests évaluant la pertinence des associations moléculaires. Cette approche faciliterait le développement d'une médecine de précision personnalisée, où les traitements pourraient être adaptés spécifiquement aux tumeurs de chaque patient.
Modulation pharmacologique de la réponse cellulaire maxillaire : développement de nouvelles stratégies
Céline Stutz
Médecine humaine et pathologie. Université de Strasbourg, 2022. Français. ⟨NNT : 2022STRAJ110⟩
ThèseAbstractL’objectif ultime du traitement des parodontites repose sur la résolution de l’inflammation et de l’infection ainsi que sur la régénération des tissus lésés. Les travaux menés durant cette thèse portent tout d’abord sur l’intérêt de l’implantation d’une biomembrane de polycaprolactone fonctionnalisée par BMP-2 et supplémentée en cellules souches mésenchymateuses pour la régénération osseuse in vivo dans un modèle murin de défaut osseux maxillaire. Ensuite, nous avons mis en évidence une augmentation de l’expression de Gremlin1 par Porphyromonas gingivalis in vivo dans un modèle d’abcès sous cutanée et in vitro sur des cellules épithéliales, ainsi que sur des tissus gingivaux prélevés chez des patients atteints de parodontite. Puis nous avons démontré in vitro l’implication de la Prohibitine1 dans la réponse inflammatoire induite par P. gingivalis, et le rôle de son ligand IN44 dans la modulation de l’inflammation.
Stratégies de prise en charge de l'arthrose de genou : innovation et évaluation médico-économique
Moustafa Naja
Médecine humaine et pathologie. Université de Strasbourg, 2022. Français. ⟨NNT : 2022STRAJ031⟩
ThèseAbstractL’arthrose du genou est l’arthrose la plus fréquente du membre inférieur, sa prévalence augmente avec l'âge. Cette maladie chronique est synonyme d’une dégradation de la qualité de vie et peut conduire à un état de handicap physique et de détresse psychologique. Compte tenu de son incidence et de l’augmentation de l’espérance de vie, elle représente un enjeu important de santé publique. Nous avons mené une revue systématique de la littérature avec méta-analyse en réseau dans le but d’identifier les stratégies les plus efficaces. Les résultats des stratégies utilisant les cellules souches mésenchymateuses (CSM) et le plasma riche en plaquettes (PRP) dans le cadre de la prise en charge de l'arthrose du genou étaient associés à une amélioration à long terme de la douleur et de la fonction physique. Nous avons également mené une étude médico-économique dans laquelle les injections intraarticulaires des CSM ou de PRP avant le recours à la prothèse totale du genou (PTG) ont été comparées à la chirurgie immédiate sur la base de leurs coûts et de leurs résultats de santé exprimés en QALY. Les résultats ont montré que les injections de PRP ou de CSM utilisées pour éviter ou retarder potentiellement la PTG ne sont pas des stratégies efficientes sur un horizon temporel de 15 ans par rapport à la PTG immédiate du point de vue de l'assurance maladie française. Les analyses de sensibilités ont montré que l'augmentation potentielle du taux de révision de la PTG rend cette stratégie moins efficiente en faveur des PRP et CSM.
Role of microparticles in aortic valve thrombogenecity
Sandy Hmadeh
Human health and pathology. Université de Strasbourg, 2022. English. ⟨NNT : 2022STRAJ123⟩
ThèseAbstract[...]
Impact of periodontal inflammation on the cardiac splenic axis : study of Neutrophils Extracellular Traps (NETs) and splenic microvesicles as mediators of procoagulant and inflammatory responses
Hanine El Itawi
Human health and pathology. Université de Strasbourg, 2022. English. ⟨NNT : 2022STRAJ017⟩
ThèseAbstractPeriodontitis, mainly induced by P.gingivalis (PG) is associated with cardiovascular risk. Microvesicles (MVs) are pro-inflammatory and -coagulant effectors shed from plasma membranes. We evaluated the remote inflammatory impact of PG on heart and spleen tissue by immunostaining, ROS formation, and on endothelial senescence. In mice, ligature and/or PG gum injury by threads (LIG) soaked or not with PG (LP,LP 4w) were compared to oral gavage (gvg) and intraperitoneal injection (IP). LIG and LIG-PG reduced spleen granulocytes, doubled monocytes and neutrophils with no adaptative responses in 2-4 weeks. IP tripled monocytes with 10 folds neutrophil rise and half T or B lymphocytes. PAD-4 inhibitor decreased ROS , pointing at Netosis contribution. Splenocytes MVs (SMVs) raised in IP. In vitro, LIG-PG, IP and gvg SMVs induced coronary endothelial senescence. In heart extracts, pro-inflammatory VCAM, Gasdermin-D, IL-6, and TNF- were only up-regulated in IP and LIG-PG. Anti-inflammatory IL-10 raised in IP.Altogether, PG induces remote spleen and heart activation, the shedding of pro-coagulant and -senescent SMVs possibly favoring cardiovascular risk.
Caractérisation de nouvelles molécules vasorelaxantes : études chimico-pharmacologique de Carissa edulis, une espèce médicinale de la pharmacopée béninoise
Ursula Mawulé Houngue
Médecine humaine et pathologie. Université de Strasbourg; Université d'Abomey-Calavi UAC (Bénin), 2021. Français. ⟨NNT : 2021STRAJ111⟩
ThèseAbstractLes maladies cardiovasculaires représentent la première cause de mortalité dans le monde et leur incidence est associée à plusieurs facteurs de risque majeurs dont l’hypertension (HTA). Au Bénin, plusieurs plantes sont utilisées en médecine traditionnelle pour traiter l’HTA. Trois d’entre elles ont été sélectionnées pour notre étude : Carissa edulis, Diodia scandens et Cleome gynandra. Ainsi, l’objectif principal de cette thèse est d’étudier le potentiel des extraits de ces plantes à moduler le tonus vasculaire et de déterminer les mécanismes sous-jacents. Pour cela, nous avons procédé ex vivo et in vivo à des tests de réactivité vasculaire, d’absorption des polyphénols et d’immunofluorescence de protéines cibles. Les résultats ont montré que l’extrait de Carissa edulis a été le plus actif des trois plantes. Il possède une importante activité vasorelaxante strictement dépendante de l’endothélium et médiée par le monoxyde d’azote (NO) et sa fraction butanolique (CEBF) a une activité encore plus prononcée. Le traitement de rats d'âge moyen avec l’extrait total de Carissa edulis pendant deux semaines a significativement amélioré la fonction endothéliale et restauré la relaxation médiée par le NO dans l'artère mésentérique principale et l’aorte thoracique. Il a aussi fortement réduit au niveau vasculaire le niveau d’expression d’ACE et AT1R impliqués dans la dysfonction endothéliale associée au vieillissement et à l’hypertension artérielle, et le stress oxydant. Une identification putative par métabolomique non ciblée des molécules de CEBF a révélé la présence des polyphénols, terpènes et alcaloïdes.
Effets des immunosuppresseurs et des microparticules membranaires sur la transition épithélio-mésenchymateuse des cellules épithéliales bronchiques en culture 2D et 3D : intérêt en transplantation pulmonaire
Margaux Gracyasz
Sciences agricoles. Université de Strasbourg, 2021. Français. ⟨NNT : 2021STRAJ070⟩
ThèseAbstractLa bronchiolite oblitérante (BO) est caractérisée par un remodelage anormal de l’épithélium bronchique causant une oblitération fibreuse de la bronchiole. Un des mécanismes impliqués est la transition épithélio-mésenchymateuse (TEM). La TEM pourrait être favorisée par des facteurs allo-immuns (infections) ou non-allo-immuns (Immunosuppresseur (IS)). Cette étude s’intéresse à l’impact d’un facteur non-immuns, les IS et plus particulièrement le Tacrolimus (TAC) et Everolimus (EVE). Le développement d’un modèle 3D est nécessaire pour mieux comprendre les interactions cellulaires et le phénomène de TEM induite par les IS. Méthodes. BEAS-2B, cellules épithéliales bronchique sont soumis à TAC (1-20μM), EVE (0,1nM-1μM) et à un stress pro-inflammatoire (microparticules pro-inflammatoires, MPs) (30nM) pendant 72 h. Les MPs sont obtenus par la stimulation des monocytes THP-1 par le lipopolyssacharide de Pseudomonas aeruginosa. La morphologie cellulaire a été analysé par microscopie otique et confocal, analyses des marqueurs épithéliaux et mésenchymateux par western blot et de la capacité migratoire par scratch test. Pour la formation de sphéroïdes, 3 concentrations de cellules 10 000, 50 000 et 100 000 cellules ont été utilisées. Les sphéroïdes ont été analysées après 7 jours d’incubation au microscope optique et confocal. Résultats : les cellules traitées par TAC and EVE ont modifié leur morphologie cellulaire et ont un profil mésenchymateux avec une baisse significative de la E-cadhérine avec TAC10μM and EVE0.,1nM comparé au cellules non traitées (p<0,0001) et (p<0,001) respectivement et une augmentation significative de la vimentine avec TAC10μM et EVE0,1nM comparé aux cellules non traitées (p=0,0005)et (p<0,05) respectivement. Les sphéroïdes à 10 000, 50 000 et 100 000 cellules ont un diamètre de250μm, 520μm et 620μm respectivement. A 100 000 cellules, la partie distale es sphéroïdes expriment de la vimentine, alors que le reste expriment la E-cadhérine. Conclusion : In vitro, le TAC et EVE combiné aux MPs pro-inflammatoires conduit en faveur d’une exagération de la TEM. Le prescripteur pourrait considérer la statue inflammatoire du patient transplanté. Le modèle 3D permettra d’avoir une présentation plus fidèle afin d’étudier les effets des IS des médicaments en diffusant par voie basale et non apicale.
Étude de la transition endothélio-mésenchymateuse des cellules endothéliales intra-insulaires de souris et modulation pharmacologique : intérêt dans la greffe d'îlots pancréatiques
Noura Sbat
Sciences agricoles. Université de Strasbourg, 2021. Français. ⟨NNT : 2021STRAJ059⟩
ThèseAbstractLa revascularisation des îlots greffés est déterminante pour le succès de la greffe. Le contact des îlots avec le sang de la veine porte induit une réaction inflammatoire précoce appelée IBMIR caractérisée par la production de cytokines pro-inflammatoires dans l'environnement des îlots. Une des réponses endothéliales au stress de l'ischémie et de l'IBMIR est la transition endothélio-mésenchymateuse (EndTM). Notre étude réside dans la caractérisation de l'EndTM et dans l’étude de l’effet protecteur du Dulaglutide sur l'endothélium intra-insulaire contre l'EndMT induite par les cytokines de l'IBMIR. Nos données indiquent une diminution progressive des marqueurs endothéliaux et l'acquisition de marqueurs mésenchymateux des cellules endothéliales accompagnée de la libération de microvésicules pro-inflammatoires. Le Dulaglutide exerce une cytoprotection contre les réponses induites par les cytokines de manière GLP-1R dépendante, ainsi que diminue l'effet proinflammatoire cytotoxique des MVs. Le Dulaglutide représente une potentielle thérapie adjuvante pour améliorer l’efficacité de la greffe d’îlots.
Évaluation de la sénescence endothéliale et leucocytaire dans le choc septique
Hamid Merdji
Médecine humaine et pathologie. Université de Strasbourg, 2021. Français. ⟨NNT : 2021STRAJ051⟩
ThèseAbstractParmi les conséquences à long terme du sepsis (également appelé "syndrome post-sepsis"), l'augmentation du risque de développer des complications cardiovasculaires inexpliquées et/ou un épisode infectieux récurrent sont des préoccupations émergentes. Ces complications expliquent en grande partie la morbi-mortalité chez les survivants d’un choc septique. Récemment, la sénescence, définie comme l’arrêt irréversible du cycle cellulaire, a été identifiée comme un mécanisme de dysfonction cellulaire qui perdure dans le temps. Habituellement liée à l’âge lorsqu’il s’agit de sénescence réplicative, elle peut aussi être « induite » de manière « prématurée » par un stress majeur. Ainsi,une sénescence prématurée induite par le choc septique au niveau du système cardio-vasculaire et immunitaire pourrait en partie contribuer à la physiopathologie et aux conséquences à long terme du syndrome post-sepsis. Ce travail de thèse a pour objectif d’appréhender les relations potentielles entre le sepsis et la sénescence prématurée induite (ou sénescence accélérée). En particulier, les mécanismes cellulaires clés contribuant aux infections récurrentes et aux événements cardiovasculaires chez des patients convalescents déjà lourdement affectés par un choc septique. Les principaux résultats de nos travaux sont que le sepsis induit un dysfonctionnement artériel avec une acquisition in situ, dépendante du temps, d'un phénotype d'inflammation et de sénescence dans les artères de conduction et de résistance, ce qui indique un effet systémique persistant pouvant expliquer en partie la physiopathologie des conséquences cardio-vasculaires à long terme.
Rôle des co-transporteurs sodium glucose 1 et 2 dans la dysfonction vasculaire et cardiaque chez le rat hypertendu induit par l’Angiotensine II
Christophe Bruckert
Médecine humaine et pathologie. Université de Strasbourg, 2021. Français. ⟨NNT : 2021STRAJ022⟩
ThèseAbstractLa voie pro-oxydante de l’angiotensine II est associée à une surexpression des co-transporteurs sodium glucose 1 et 2 (SGLT1 et 2) au sein des cellules endothéliales ainsi qu’à l’induction de la dysfonction endothéliale dans les artères coronaires. L’ensemble de ces effets a été prévenu par l’inhibiteur mixte de SGLT1 et 2, sotagliflozine ainsi que par l’inhibiteur sélectif de SGLT2, l’empagliflozine suggérant ainsi l’implication de ces transporteurs dans l’induction de la dysfonction endothéliale. L’objet de cette étude est d’évaluer le rôle de SGLT1 et 2 dans la dysfonction vasculaire et cardiaque induites par la réponse hypertensive de l’angiotensine II chez le rat. L’étude montre que l’hypertension induite par l’angiotensine II mène à une dysfonction diastolique du ventricule gauche et à une dysfonction endothéliale des macro et des micro vaisseaux associées à une surexpression de SGLT1 et 2 dans les cellules endothéliales. De plus, ce travail indique que l’ensemble des effets cardiovasculaires délétères observés sont prévenus par l’empagliflozine sans pour autant moduler la pression artérielle. L’ensemble de cette étude montre que l’inhibition des transporteurs SGLT1/2 apparait comme une intéressante stratégie pour protéger la fonction CV des patients non diabétiques avec dysfonction diastolique.
Potential of anthocyanins to prevent age-related endothelial senescence and dysfunction
Ahmed Bey Chaker
Pharmacology. Université de Strasbourg, 2021. English. ⟨NNT : 2021STRAJ121⟩
ThèseAbstractAnthocyanin-rich blackcurrant juice (ARB) has been shown to induce sustained endothelial NO formation and subsequent vasorelaxation. This study examined if the intake of ARB improves an established ageing-related endothelial dysfunction. Ageing was associated with increased systolic blood pressure, an endothelial dysfunction, increased vascular oxidative stress, activation of the angiotensin system and endothelial expression of pro-atherogenic factors. Chronic intake of ARB decreased the systolic blood pressure, improved the endothelial function, and reduced vascular oxidative stress and the expression of protein markers. ARB intake was associated with anthocyanin accumulation in vascular tissue and with increased uptake of anthocyanin in the endothelium via SGLTs. In conclusion, chronic intake of ARB improved the ageing-related endothelial dysfunction in old rats, most likely by preventing activation of the local angiotensin system and the endothelial senescence.
Targeting senescent endothelial cells using a theranostic approach : therapeutic potential of an Omega 3 formulation
Lamia Remila
Pharmaceutical sciences. Université de Strasbourg, 2021. English. ⟨NNT : 2021STRAJ014⟩
ThèseAbstractThe endothelium, the cell monolayer lining the luminal surface of blood vessels, has as a pivotal role in the control of vascular homeostasis. Strategically located, endothelial cells can regulate diverse vascular responses including vascular tone, platelet aggregation, thrombosis, leukocyte trafficking, inflammation and angiogenesis. In major types of cardiovascular disease, an endothelial dysfunction is observed initially that is characterized by an imbalance between the vasodilator mechanisms and the induction of endothelium-derived contracting factors, resulting in impaired endothelium-dependent vasodilatation. Several epidemiological or interventional studies have shown that consumption of the major omega-3 PUFAs, namely eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), has been related to a reduced risk of morbidity/mortality due to CVDs. Due to the presence of multiple unsaturation, omega-3 PUFAs are prone to degradation which can result in the production of various reactive chemical species leading to loss of functionality. Therefore, the present study investigated whether nanoencapsulation of EPA:DHA 6:1 is able to improve the stability of omega-3 PUFAs and hence, to enhance their beneficial effect at the endothelial function using in vitro, ex vivo and in vivo approaches, and, if so, to determine the underlying mechanisms. EPA:DHA 6:1 was emulsified in water phase and coated with proteins and gum derivatives or used in native form. Firstly, vascular reactivity studies were performed on left circumflex porcine coronary artery rings and changes in isometric tension were determined using organ chambers. Secondly, NO formation was assessed in cultured porcine coronary artery endothelial cells using the fluorescent probe DAF-FM and confocal microscopy. The antiaggregatory effect of endothelial cells was assessed using suspensions of washed human platelets incubated in an aggregometer. Thirdly, for the in vivo study, middle-aged male Wistar rats received by daily gavage 100 mg/kg of either native EPA:DHA 6:1 form or coated EPA:DHA 6:1 nanoparticles or water (control). After 1-week of treatment, the animals were euthanized. The main mesenteric artery and thoracic aorta were used for vascular reactivity studies, and the thoracic aorta for immunofluorescence studies on frozen section. The addition of coated EPA:DHA 6:1 nanoparticles to U46619-pre-contracted coronary artery rings induced concentration-dependent relaxations in rings with intact endothelium that were more sustained than those of the native EPA:DHA 6:1 form, whereas small relaxations were observed in denuded rings. The sustained endothelium-dependent relaxation to the coated EPA:DHA 6:1 nanoparticles was abolished by an eNOS inhibitor (L-NA) indicating the exclusive involvement of NO. In contrast, the relaxation in response to the native form was significantly reduced by indomethacin indicating the involvement of vasorelaxant prostanoids.
Bio-ingénierie d'une molaire et son innervation après implantation en site osseux
Marion Strub
Chirurgie. Université de Strasbourg, 2020. Français. ⟨NNT : 2020STRAJ066⟩
ThèseAbstractLa régénération tissulaire est un domaine en pleine expansion en odontologie et a pour principal objectif de remplacer les tissus dentaires lésés ou absents. Il existe différentes approches basées sur la régénération d'un type tissulaire particulier constituant la dent (émail, dentine, pulpe), du parodonte (cément, os alvéolaire, ligament alvéolo-dentaire) ou encore d'une dent entière. Dans cette perspective, la vascularisation et l'innervation de la dent sont essentielles pour le maintien de l'homéostasie et la réponse aux stimuli nociceptifs. Ce travail de thèse s’articule autour de trois grandes thématiques : la régénération de la dent et son innervation, la préparation d’un site osseux propice à son développement et enfin son éruption dans la cavité buccale, la régénération tissulaire n’ayant de sens que lorsque l’organe est fonctionnel.
Impact de l'infection par Porphyromonas gingivalis sur la réponse inflammatoire locale et systémique
Isaac Maximiliano Bugueno Valdbenito
Microbiologie et Parasitologie. Université de Strasbourg, 2019. Français. ⟨NNT : 2019STRAJ090⟩
ThèseAbstractLes mécanismes impliqués dans l’initiation et le développement des parodontites, ainsi que la dissémination des parodontopathogènes via la circulation systémique et ses effets au niveau vasculaire, restent peu connus. L'infection chronique a été décrite comme un mécanisme potentiel impliqué dans l'aggravation de l'athérothrombose. A l’heure actuelle, le rôle joué par Porphyromonas gingivalis (P.gingivalis) est considéré comme majeur dans les phénomènes associés, tels que sa capacité à perturber la barrière épithéliale ainsi que l’endothélium vasculaire, l’induction d’une réponse inflammatoire soutenue contribuant à la destruction tissulaire. Dans ces travaux de thèse, nous avons évalué les effets de P.gingivalis sur l’apoptose et l’inflammation des cellules épithéliales (GEC), fibroblastiques (FB) et dans un modèle 3D de microtissus (MT), ainsi que dans des cellules endothéliales (EC). Finalement, nous avons évalué son rôle dans la réponse inflammatoire liée à la signalisation via les TLR-2 et TLR-4 et cinq protéines adaptatrices contenant le domaine du récepteur Toll/interleukine-1 (TIR). Nous avons mis en évidence que P.gingivalis est capable d'activer l'inflammation et la réponse du système immunitaire entraînant la destruction du parodonte en modulant différentiellement des processus biologiques primordiaux tels que l'apoptose (modulation de l’apoptosome Apaf-1 et son inhibiteur XIAP), le cycle cellulaire (P53, P21, CDK4), l'inflammation (modulation des TLR-2, TLR-4 et ses adaptateurs MAL et TRAM et des protéines inflammatoires telles que TNF-α), lui permettant d’échapper au système immunitaire, de contribuer à la destruction parodontale et sa dissémination systémique et d’exercer des effets sur l’endothélium. La mise en évidence de nouveaux mécanismes ou de nouvelles cibles cellulaires affectées par ce pathogène pourrons nous permettre de développer de nouvelles stratégies thérapeutiques.
Splenocyte microvesicles are pro-senescent endothelial effectors : impact of age and protection by EPA/DHA 6/1, an optimized formulation of nutritional eicosapentaenoic and docosahexaenoic polyunsaturated fatty acids
Abdul Wahid Qureshi
Pharmacology. Université de Strasbourg, 2019. English. ⟨NNT : 2019STRAJ077⟩
ThèseAbstractAgeing is associated with progressive endothelial senescence favoring endothelial and vascular dysfunction, often associated with cardiovascular diseases. We investigated in young, middle-aged and old rats (Y, MA, O) the impact of ageing on the shedding of spleen-derived leukocytes microvesicles (SMVs) and measured their pro-senescent effects in porcine primary coronary artery endothelial cells (ECs). Oxidative stress accumulates in spleen tissue and SMVs shedding increases with age. SMVs from MA, O but not Y rats induced premature endothelial senescence, with increased Senescence-Associated-β-galactosidase activity and up-regulated p53, p21, p16. SMVs shifted ECs towards a pro-inflammatory and pro-atherothrombotic phenotype with increased endothelial oxidative stress and down-regulated eNOS. Short-term intake of omega-3 EPA:DHA 6:1 but not EPA:DHA 1:1 reduced age-related oxidative stress and SMVs shedding in MA and O spleen tissues, and abolished SMVs-induced premature endothelial senescence in MA, most probably by reducing oxidative stress and preventing the activation of the local angiotensin system.
Development of novel therapeutic strategies for periodontal regeneration by modulation of inflammatory response
Fareeha Batool
Bioengineering. Université de Strasbourg, 2019. English. ⟨NNT : 2019STRAJ068⟩
ThèseAbstractControl of periodontal infection and inflammation is crucial for optimal periodontal wound healing and regeneration. For this purpose, three different and novel strategies were developed and tested for their impact on periodontal wound healing parameters in vitro and in vivo. Firstly, an ibuprofen-functionalized polycaprolactone (IBU-PCL) membrane was developed as an anti-inflammatory barrier membrane that successfully reduced inflammatory markers expression in gingival cells in vitro and decreased soft tissue inflammation, thus, improving periodontal tissue healing in an experimental periodontitis model in vivo. Secondly, chlorhexidine and ibuprofen containing in-situ forming implant (CHX-IBU ISFI) was developed to target both infection and inflammation that successfully reduced Porphyromonas gingivalis growth and inflammatory response of gingival cells in vitro as well as improved soft tissue periodontal wound healing in vivo. Lastly, a thermosensitive chitosan-based hydrogel functionalized with atorvastatin encapsulated in a nano-emulsion (ATV-KELP NE) was characterized and used to treat an induced bone defect in vivo that resulted in improved soft and hard tissue healing by counteracting infection and modulation of immuno-inflammatory response.
L’activation des polynucléaires neutrophiles au cours du choc septique
Laure Stiel
Hématologie. Université de Strasbourg, 2019. Français. ⟨NNT : 2019STRAJ069⟩
ThèseAbstractCe travail visait à étudier l’activation des polynucléaires neutrophiles (PNNs) au cours du choc septique. Après une introduction sur la physiopathologie du choc septique, de la coagulation intravasculaire disséminée (CIVD) et des PNNs, nous rapportons différents résultats expérimentaux et cliniques. Dans une étude prospective sur 100 patients, nous avons montré que l’activation des PNNs, mesurée par leur fluorescence en cytométrie en flux pourrait représenter un marqueur diagnostique original de la CIVD du choc septique. Ensuite, nous avons mis en évidence un des mécanismes de l’activation des PNNs, la NETose, à l’aide de marqueurs sériques. Afin de confirmer la relevance de ce phénomène, nous avons visualisé les NETs spécifiquement dans le sang de patients en choc septique avec CIVD en immunofluorescence. Enfin, nous avons identifié des protéines associées à l’activation du PNN dans la CIVD du choc septique par une étude protéomique, afin d’en envisager les mécanismes. Le PNN pourrait ainsi être un acteur incontournable de la dérégulation de l’immunothrombose au cours de la CIVD, et être envisagé comme cible thérapeutique.
Evaluation of the role of sodium-glucose co-transporters SGLT1 and 2 in the induction of endothelial senescence and dysfunction using an in vitro and in vivo approach
Sin-Hee Park
Pharmacology. Université de Strasbourg, 2019. English. ⟨NNT : 2019STRAJ041⟩
ThèseAbstractSodium-glucose cotransporter (SGLT)2 inhibitors have shown remarkable cardiovascular protective effects with reduced risk of cardiovascular mortality and hospitalization for heart failure in T2DM patients with a high cardiovascular risk and that this effect is independent of glucose control. The possibility that SGLT1 and 2 inhibitors protect the cardiovascular system by targeting the pivotal protective endothelial function remains unclear. The first in vitro study indicates that angiotensin II and circulating microparticles from patients with coronary artery disease via the activation of the local angiotensin system are potent inducers of SGLT1 and 2 expression to promote endothelial senescence and dysfunction. The second in vivo study indicates that the selective SGLT2 inhibitor empagliflozin protects the heart and the vascular system, and that the treatment is particularly effective to delay premature vascular senescence known to promote the development of cardiovascular diseases at arterial sites at risk of atherogenesis. Altogether, these studies suggest that inhibition of SGLT2 and/or SGLT1 might be an attractive therapeutic strategy to protect the endothelial function, and the subsequent development of cardiovascular diseases.
Nanomédecine régénérative de l'articulation temporo-mandibulaire
Xavier van Bellinghen
Ingénierie biomédicale. Université de Strasbourg, 2019. Français. ⟨NNT : 2019STRAJ011⟩
ThèseAbstractL'articulation temporo-mandibulaire (ATM) est une articulation formée entre l'os temporal et le condyle mandibulaire, et est fréquemment atteinte. Ces affections sont souvent si douloureuses lors d'activités orales fondamentales que les patients ont une qualité de vie diminuée. Les limites de la thérapeutique pour les atteintes des ATM, ont conduit à accroître l'intérêt pour les stratégies régénératives combinant les cellules souches, les "scaffolds" implantables et les molécules bioactives. Réussir dans la régénération fonctionnelle et structurelle de l'ATM constitue un véritable défi. Des stratégies innovantes et des biomatériaux sont absolument essentiels car l'ATM peut être considérée comme l'un des ensembles tissulaires les plus difficiles à régénérer, au vu de sa capacité de guérison limitée, de ses propriétés histologiques et structurelles uniques et de la nécessité de prévenir à long terme ses adhérences ossifiées ou fibreuses. Une première étude in vitro a été menée pour développer un implant nanostructuré pro-régénératif du cartilage portant des cellules souches mésenchymateuses humaines. Les nanoréservoirs de TGFβ3 au sein d’une matrice de collagène de type II de méduse ont montrés leur capacité chondrogénique. Ils ont permis une colonisation, puis une différenciation et une maturation matricielle favorable à la régénération cartilagineuse. Ces résultats sont encourageants vu la difficulté de mise en culture des chondrocytes et la nécessité d'une restauration rapide de la couche cartilagineuse des surfaces articulaires. Une deuxième étude in vivo a été menée pour développer un implant nanostructuré pro-régénératif anti-inflammatoire osseux. Des matrices biomimétiques nanofibreuses et microporeuses de polycaprolactone (PCL) ont été fonctionnalisées par des nanoréservoirs de BMP-2 et d’ibuprofène. Elles ont été implantées sur des modèles murins de lésions osseuses maxillaires. L’accélération de la régénération induite par ces implants nanofonctionnalisés a été mise en évidence sur des souris sauvages et sur des souris mutantes Tabby. Le bénéfice ainsi établi de fonctionnalisation des implants par la BMP-2 et l'ibuprofène revêt un intérêt particulier face aux fréquentes pathologies inflammatoires chroniques de l'ATM. Ces résultats prometteurs devront faire suite à des approches d'orchestration tridimensionnelle des différents tissus de l'ATM.
Conception et optimisation d'un implant thérapeutique combiné à des organoïdes de cellules souches pour la nanomédecine régénérative ostéoarticulaire
Marion Pugliano
Ingénierie biomédicale. Université de Strasbourg, 2019. Français. ⟨NNT : 2019STRAJ111⟩
ThèseAbstractNotre équipe a mis au point une stratégie innovante d’implants thérapeutiques biphasiques, pour une régénération plus efficace et plus durable du cartilage articulaire, dans le cadre du traitement des lésions ostéochondrales. Ces implants pourraient représenter de meilleures alternatives aux traitements actuellement utilisés en chirurgie orthopédique. Dans un premier temps, nous avons élaboré un modèle d’implant thérapeutique à base de collagène de type II dérivé de méduse, fonctionnalisé par des nanoréservoirs de facteurs de croissance TGF-β3 et équipé de cellules souches mésenchymateuses humaines (hCSMs) dérivées de la moelle osseuse. La biocompatibilité et les propriétés chondrogéniques de cet implant ont été validées par des analyses in vitro, confirmant son potentiel thérapeutique pour la régénération du cartilage articulaire. Dans un second temps, nous nous sommes plus particulièrement concentrés sur la régénération de l’unité ostéochondrale. Il est en effet essentiel de régénérer un os sous-chondral sain, pour permettre une régénération stable du cartilage articulaire en surface. Dans ce but, nous avons développé un implant thérapeutique doté de deux compartiments : (i) un premier compartiment élaboré à partir d’un biomatériau synthétique de poly-ε-caprolactone (PCL), doté de nanoréservoirs de facteur de croissance BMP-7, pour la régénération de l’os sous-chondral : (ii) un second compartiment à base d’un hydrogel d’alginate et d’acide hyaluronique, ensemencé d’organoïdes hybrides de hCSMs et de chondrocytes humains, pour la régénération du cartilage articulaire. L’efficacité de cet implant biphasique a été confirmée in vitro et in vivo chez la souris. Dans un troisième temps, nous avons évalué notre stratégie d’implant thérapeutique biphasique en site intra-articulaire, chez l’animal de grande taille (brebis). Ces travaux ont permis de valider la faisabilité et l’efficacité de notre stratégie, combinant cette fois-ci : (i) un implant collagénique commercial, doté de nanoréservoirs de facteur de croissance BMP-2, pour la régénération de l’os sous-chondral ; (ii) un hydrogel d’alginate et d’acide hyaluronique, incorporant des organoïdes de CSMs de moelle osseuse de brebis, pour la régénération du cartilage articulaire. En conclusion, ces médicaments combinés de thérapie innovante, associant des biomatériaux naturels ou synthétiques (dispositif médical implantable), des molécules thérapeutiques et des cellules souches mésenchymateuses (médicament de thérapie innovante), permettent la régénération de l’unité ostéochondrale dans son ensemble. Cette stratégie novatrice permettra sans nul doute de grandes avancées en nanomédecine régénérative ostéoarticulaire, dans l’optique d’améliorer toujours plus le traitement et le confort des patients.
Development of vascularized tumor spheroids mimicking the tumor environment : angiogenesis and hypoxia
Hassan Chaddad
Cancer. Université de Strasbourg, 2019. English. ⟨NNT : 2019STRAJ001⟩
ThèseAbstractThe tumor microenvironment, tumor angiogenesis, and hypoxia play a critical role in the tumor progression and therapy development of many cancers. Limitations in drug penetration, multidrug resistance phenomena, tumor vascularization, and oxygen deficiency are all parameters influencing drug effects. 3D cell culture allows to create a microenvironment that more closely mimics in vivo tissue architecture and function, thus, gene and protein expression modified by the 3D environment are further features that affect treatment outcome. In our first study, in order to develop a vascularized 3D model like in vivo tumors, we co-cultured 2D endothelial cells with 3D tumor cells. After 2 weeks of this combination, a vascular network was formed and organized with tubule-like structures presenting a lumen and expressing different angiogenic markers such as VEGF, CD31 and Collagen IV. In our second study, we developed an in vitro hypoxia model integrating the 3D environment and a hypoxia mimetic agent (CoCl2) to mimic the in vivo tumors and to show the importance of hypoxia in drug response and resistance. Results revealed that the best condition was the combination 3D+CoCl2 model, leading to overexpression oh hypoxia (GLUT1/3, VEGF) and drug resistance (ABCG2, MRP1) related genes. Taken together, angiogenesis and hypoxia are key factors for in vivo tumor microenvironment and they should be adopted in in vitro model design to better select and screen anticancer drugs.
Caractérisation des microvésicules comme biomarqueurs de suivi de la greffe d'îlots pancréatiques et de l'efficacité thérapeutique dans l'athérosclérose en pathologies humaines
Lamia Amoura
Biologie moléculaire. Université de Strasbourg, 2018. Français. ⟨NNT : 2018STRAJ134⟩
ThèseAbstractLes Microvésicules (MVs) sont des marqueurs circulants de l’activation cellulaire au cours de la dysfonction du greffon et l’athérothrombose. Les MVs de la cellule bêta ou intratissulaires vasculaires, sont peu connues. Le suivi longitudinal de 19 patients transplantés d’îlots pancréatiques par les MV- PSA-NCAM+ sanguines témoigne d’une altération précoce du greffon avant l’identification des marqueurs clinique et biologique de la perte du greffon. La cinétique de libération des MVs leucocytaires, endothéliales et hépatiques suggère leur intérêt pour l’identification de la cause de la perte du greffon et pour la surveillance de l'immunosuppression. Après validation d’une méthode d’extraction douce des MVs tissulaires sur des plaques d’athérome, nous avons mesuré l’accumulation de MVs pro-sénescentes dans l’aorte de rats âgés, qui étaient réduite par l’ingestion d’EPA : DHA (6 :1), avec une baisse des propriétés pro-sénescentes identifiée sur les cellules endothéliales d’artères coronaires en culture. Le contrôle des MV nocives par cytoprotecteur du vaisseau réduirait la sénescence endothéliale.
Induction of atrial endothelial senescence by angiotensin II and thrombin : role of oxidative stress and characterization of pro-thrombotic, pro-adhesive, proteolytic and pro-fibrotic phenotype
Hira Hasan
Cardiology and cardiovascular system. Université de Strasbourg, 2018. English. ⟨NNT : 2018STRAJ122⟩
ThèseAbstractMany studies documented strong relationship between ageing and development of atrial fibrillation (AF). Moreover, it has been found that senescence and senescence-associated- secretory-phenotype play an important role in development of overall atrial inflammation which can ultimately ends up in atrial structural remodeling paving the way to AF perpetuation and maintenance. Moreover, it has been known for decades that AF has been associated with the activation of local and circulating coagulation factors. However, little is known about the impact of coagulation-derived factors, in particular thrombin, on the onset of AF. The aim of the present study was to determine the link between atrial endothelial cells (AECs) senescence and the induction of pro-inflammatory, pro-adhesive, pro-fibrotic and pro-remodelling AECs patterns and also to evaluate the contribution of coagulation derived-factors such as thrombin.
Potential of omega-3 EPA/DHA 6/1 to ameliorate ageing-related endothelial dysfunction
Muhammad Akmal Farooq
Cardiology and cardiovascular system. Université de Strasbourg, 2018. English. ⟨NNT : 2018STRAJ107⟩
ThèseAbstractEPA:DHA 6:1 omega-3 formulation has been shown to induce a sustained endothelial NO synthase-derived formation of nitric oxide. This study examined if the intake of EPA:DHA 6:1 improves an established ageing-related endothelial dysfunction. Ageing-related endothelial dysfunction was characterized by a blunted NO-mediated component of relaxation, abolished EDH-mediated component and increased COX-derived endothelium-dependent contractile responses. Ageing increased vascular oxidative stress, expression of NADPH oxidase subunits, COX-2, eNOS, ACE, AT1R, and senescence markers, whereas COX-1 was down-regulated. Chronic intake of EPA:DHA 6:1 improved the NO-mediated relaxations, reduced EDCFs, vascular oxidative stress and normalized the expression of protein markers. In conclusion, chronic intake of EPA:DHA 6:1 prevented the ageing-related endothelial dysfunction in old rats, most likely by preventing activation of the local angiotensin system and the subsequent vascular oxidative stress.
Etudes pharmacologiques d'un modèle cellulaire 2D/3D dans le cancer hépato-pancréatique
Sarah Hassan
Cancer. Université de Strasbourg, 2018. Français. ⟨NNT : 2018STRAJ037⟩
ThèseAbstractLes cancers du foie et du pancréas sont classés parmi les cancers les plus fréquents et agressifs à travers le monde et présentent une résistance à la chimiothérapie. L'efficacité des médicaments anticancéreux est affectée par les activités des enzymes métaboliques, transporteurs membranaires et par l’environnement tumoral. Le but de notre thèse est 1) de développer un modèle cellulaire hépatique et caractériser les mécanismes sous-jacents de la modulation de l’expression et de la fonctionnalité des transporteurs membranaires et des enzymes clés qui régissent le métabolisme des médicaments et 2) d’évaluer in vitro, dans différents modèles cellulaires (hépatique et pancréatique) en 2D et 3D, l’effet apoptotique de médicaments anticancéreux associés à des polyphénols en vue d’optimiser leur activité. Dans une première partie, nous avons mis en place une nouvelle lignée cellulaire hépatique humaine dérivée des HepG2, stable, exprimant suffisamment et significativement les enzymes CYP450 et les transporteurs hépatiques (MRP2, MDR1 et OATP1B1). Ce modèle pourrait être un outil de choix pour des études précliniques de métabolisme et de prédiction d’hépatotoxicité. Dans une deuxième partie, nous avons pu voir que les cellules pancréatiques et hépatiques dans un environnement 3D sont plus prédictives d’une tumeur in vivo et peuvent être un modèle de choix pour des études pharmacologiques de criblage de nouveaux médicaments anticancéreux ou des stratégies de combinaisons de molécules (avec des PP). Ainsi, nous avons montré que la quercétine, dans les cellules 3D, était capable d’augmenter l’activité de la gemcitabine et de la doxorubicine, en augmentant le taux des cellules mortes jusqu’à 60 %, par modulation des protéines MDR1 et par diminution significative du facteur HIF-1 alpha dans les cellules cancéreuses. En conclusion, les polyphénols peuvent être des molécules d’intérêt en combinaison avec des médicaments anticancéreux pour diminuer la résistance à ces traitements et servir d’outil pharmacologique pour mieux comprendre les mécanismes de résistance des cellules tumorales.
Interactions between coronary artery endothelial cells and leukocyte MPs shed in response to E. coli lipopolysaccharide : in-vitro and ex-vivo studies of the impact of vascular ageing and of high glucose
Raed Adill Hannon Altamimy
Immunology. Université de Strasbourg, 2018. English. ⟨NNT : 2018STRAJ024⟩
ThèseAbstractMicroparticles (MP) are plasma membrane vesicles shed from stimulated cells. We investigated whether leukocyte MP extracted from rat spleen are reliable markers of aging and effectors of high glucose (HG)-induced endothelial senescence and dysfunction. Data indicate that ageing enhances MP shedding from spleen cells of middle-age and aged rats and raises MP release in response to LPS, or to PMA and ionophore A23187. Of note, MP from aged but not young rats induced senescence of porcine coronary artery primary endothelial cells. In young rats, MPLPS, MPPMA/I but not from resting cells (MPCTL) reduced the endothelial-dependent relaxation of coronary artery rings (CAR) in response to bradykinin with down-regulation of eNOS, up-regulation of COX-2, ICAM-1, VCAM-1. HG enhanced early and late MP release from spleen cells. Prolonged exposure to HG potentiated endothelial dysfunction in CAR and altered vasoconstriction in response to U46619l in a SGLT1/2 and EDHF dependent manner.