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Severe acute respiratory syndrome coronavirus-2-related and imputable deaths in children:results from the French pediatric national registry

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World Journal of Pediatrics 2024年第6期20卷 611-620页

作者： Marguerite Lockhart-Bouron Noemie Vanel Michael Levy Anais R.Briant Etienne Javouhey Sophie Breinig Julia Dina Marion Caseris Francois Angoulvant stephane leteurtre Morgan Recher David W.Brossier Univ.Lille CHU LilleULR 2694-METRICS:Evaluation Des Technologies de Sante Et Des Pratiques Medicales59000LilleFrance Pediatric Intensive Care Unit CHU de MarseilleMarseilleFrance Pediatric Intensive Care Unit CHU Robert-DebreAssistance Publique Hopitaux de ParisParisFrance UniversitéParis-Cite ParisFrance Biostatistics and Clinical Research Unit CHU de Caen Normandie14000CaenFrance Pediatric Intensive Care Hospices Civils de LyonLyonFrance Neonatal andPediatric IntensiveCare Unit Children's HospitalToulouseFrance Virology Department INSERM U1311 DynamicureUniv CAEN NormandieCHU de Caen14000 CaenFrance Medical School Universite Caen Normandie14000 CaenFrance Department of Pediatrics CHU Robert-DebréAssistance Publique Hopitaux de ParisParisFrance Department Women-Mother-Child Service of PediatricsLausanne University Hospital(CHUV)LausanneSwitzerland Pediatric Intensive Care Unit Réanimation Et Soins Intensifs PéediatriquesCHU de CAENAvenue de La Cote de Nacre14000 CaenFrance CHU Sainte Justine Research Center MontréalCanada

Background Severe acute respiratory syndrome coronavirus-2(SARS-CoV-2)is responsible for an important mortality rate *** aimed to evaluate the actual imputability of SARS-CoV-2 on the mortality rate associated with SARS-CoV-2-related illnesses in the pediatric intensive care unit(PICU).Secondary objectives were to identify risk factors for *** This national multicenter comparative study comprised all patients under 18 years old with positive SARS-CoV-2 polymerase chain reactions(PCRs)[acute corona virus disease 2019(COVID-19)or incidental SARS-CoV-2 infection]and/or pediatric inflammatory multisystem syndrome(PIMS)recorded in the French PICU registry(PICURe)between September 1,2021,and August 31,*** patients were classified and compared according to their living status at the end of their PICU *** patients were evaluated by four experts in the field of pediatric infectiology and/or pediatric intensive *** imputability of SARS-CoV-2 as the cause of death was classified into four categories:certain,very probable,possible,or unlikely,and was defined by any of the first three *** There were 948 patients included of which 43 died(4.5%).From this,26 deaths(67%)could be attributed to SARS-CoV-2 infection,with an overall mortality rate of 2.8%.The imputability of death to SARS-CoV-2 was considered certain in only one case(O.1%).Deceased patients suffered more often from comorbidities,especially heart disease,neurological disorders,hematological disease,cancer,and *** of the deceased patients were admitted for pediatric inflam-matory multisystem syndrome(PIMS).Mortality risk factors were male gender,cardiac comorbidities,cancer,and acute respiratorydistress *** SARS-CoV-2 mortality in the French pediatric population was *** though the imputability of SARS-Cov-2 on mortality was considered in almost two-thirds of cases,this imputability was considered certain in only one case.

关键词： Death Pediatric intensive care unit SARS-CoV-2

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Assessment of left-ventricular diastolic function in pediatric intensive-care patients:a review of parameters and indications compared with those for adults

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World Journal of Pediatrics 2021年第1期17卷 21-30页

作者： Morgan Recher Astrid Botte Jerome Soquet Jean-Benoit Baudelet François Godart stephane leteurtre ULR 2694-METRICS:évaluation des Technologies de santéet des Pratiques Médicales Univ.LilleCHU Lille59000 LilleFrance Réanimation et Surveillance Continue Pédiatriques Hopital Jeanne de FlandreCHU de Lille59037 Lille CedexFrance Pediatric and Neonatal Intensive Care Unit CHU Bordeaux33076 BordeauxFrance Cardiac Surgery Unit CHU Lille59000 LilleFrance Congenital and Pediatric Cardiology Unit CHU Lille59000 LilleFrance

Background The incidence of diastolic heart failure has increased over *** evaluation of left-ventricular diastolic func-tion is complex,ongoing,and remains poorly performed in pediatric intensive-care *** study aimed to review the literature and to provide an update on the evaluation of left-ventricular diastolic function in adults and children in intensive *** sources We searched data from PubMed/***-two studies were *** pragmatic questions were identified:(1)What is the physiopathology of diastolic dysfunction?(2)Which tools are required to evaluate diastolic func-tion?(3)What are the echocardiographic criteria needed to evaluate diastolic function?(4)When should diastolic function be evaluated in pediatric intensive care?Results Early diastole allows characterization of relaxation,whereas compliance assessments and filling pressures are evalu-ated during late *** evolution of diastolic function differs between adults and *** in adults,decreased compliance occurs at the same time as delayed relaxation in *** function can be evaluated by Doppler *** echocardiographic criteria for ventricular relaxation include the E wave,E/A wave ratio,and isovolumic relaxation *** compliance can be assessed by the E/e'wave ratio,atrial volume,and Ap wave duration during pulmonary vein *** adult intensive-care patients,the E/e'ratio can be used as an index of tolerance for volume expan-sion in septic patients and to adjust the inotropic *** Clinical studies would allow some of these parameters to be validated for use in children in intensive care.

关键词： Diastole Echocardiography Heart failure Intensive-care unit Pediatric

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Impact of time to diagnosis on the occurrence of cardiogenic shock in MIS‑C post‑COVID-19 infection

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World Journal of Pediatrics 2023年第6期19卷 595-604页

作者： Said Bichali Mathilde Bonnet Marie‑Emilie Lampin Jean‑Benoit Baudelet Heloise Reumaux Olivia Domanski Thameur Rakza Alexandre Delarue Morgan Recher Jerome Soquet Francois Dubos stephane leteurtre Ali Houeijeh Francois Godart Pediatric Cardiology Univ.LilleCHU Lille2 Avenue Oscar Lambret59000 LilleFrance Pediatric Intensive Care Univ.LilleCHU Lille59000 LilleFrance ULR 2694‑Metrics:Evaluation des Technologies de Sante et des Pratiques Medicales Univ.Lille59000 LilleFrance Pediatric Rhumatology Univ.LilleCHU Lille59000 LilleFrance Cardiac Surgery Univ.LilleCHU Lille59000 LilleFrance Pediatric Emergency Univ.LilleCHU Lille59000 LilleFrance

Background In multisystem inflammatory syndrome in children(MIS-C),diagnostic delay could be associated with *** study aims to measure the time to diagnosis in MIS-C,assess its impact on the occurrence of cardiogenic shock,and specify its *** A single-center prospective cohort observational study was conducted between May 2020 and July 2022 at a tertiary care *** meeting the World Health Organization MIS-C criteria were included.A long time to diagnosis was defined as six days or *** on time to diagnosis were collected by two independent *** primary outcome was the occurrence of cardiogenic *** regression and receiver operating characteristic curve analysis were used for outcomes,and a Cox proportional hazards model was used for *** Totally 60 children were assessed for inclusion,and 31 were finally analyzed[52%males,median age 8.8(5.7-10.7)years].The median time to diagnosis was 5.3(4.2-6.2)*** univariable analysis,age above the median,time to diagnosis,high C-reactive protein,and high N-terminal pro-B-type natriuretic peptide(NT-proBNP)were associated with cardiogenic shock[odds ratio(OR)6.13(1.02-36.9),2.79(1.15-6.74),2.08(1.05-4.12),and 1.70(1.04-2.78),respectively].In multivariable analysis,time to diagnosis≥6 days was associated with cardiogenic shock[adjusted OR(aOR)21.2(1.98-227)].Time to diagnosis≥6 days had a sensitivity of 89% and a specificity of 77% in predicting cardiogenic shock;the addition of age>8 years and NT-proBNP at diagnosis≥11,254 ng/L increased the specificity to 91%.Independent determinants of short time to diagnosis were age<8.8 years[aHR 0.34(0.13-0.88)],short distance to tertiary care hospital[aHR 0.27(0.08-0.92)],and the late period of the COVID-19 pandemic[aHR 2.48(1.05-5.85)].Conclusions Time to diagnosis≥6 days was independently associated with cardiogenic shock in *** diagnosis and treatment are crucial to avoid the use of inotropes and

关键词： COVID-19 Delay in diagnosis Heart failure MIS-C SARS-CoV-2

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Could near infrared spectroscopy be the new weapon in our understanding of the cerebral and muscle microvascular oxygen demand during exercise?

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Journal of Sport and Health Science 2024年第4期13卷 457-458页

作者： stephane Perrey EuroMov Digital Health in Motion University of MontpellierIMT Mines AlesMontpellier 34090France

Near-infrared spectroscopy(NIRS)has been increasingly utilized in both sport and health sciences to assess various physiological parameters related to exercise performance.1 NIRS methods coupled with the recent development of portable and wearable devices suitable for field-based measurements have revolutionized the study of exercise physiology and the determinants of exercise performance by providing real-time,non-invasive,and spatially localized measurements of tissue oxygenation dynamics.

关键词： cerebral utilized exercise

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Life cycle assessment as a prospective tool for sustainable agriculture and food planning at a local level

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Geography and Sustainability 2024年第2期5卷 251-264页

作者： Andrea Lulovicova stephane Bouissou UniversitéCôte d’Azur ESPACE Laboratory UMR730098bd Edouard Herriot06200 NiceFrance

Owing to the far-reaching environmental consequences of agriculture and food systems,such as their contribution to climate change,there is an urgent need to reduce their *** and national governments set sustainability targets and implement corresponding ***,critics of the globalized system claim that a territorial administrative scale is better suited to address sustainability ***,at the subnational level,local authorities rarely apply a systemic environmental assessment to enhance their action *** paper employs a territorial life cycle assessment methodology to improve local environmental agri-food *** objective is to identify significant direct and indirect environmental hotspots,their origins,and formulate effective mitigation *** methodology is applied to the administrative department of Finistere,a strategic agricultural region in North-Western *** environmental criteria including climate change,fossil resource scarcity,toxicity,and land use are *** findings reveal that the primary environmental hotspots of the studied local food system arise from indirect sources,such as livestock feed or diesel *** reduction and organic farming conversion emerge as the most environmentally efficient strategies,resulting in a 25%decrease in the climate change ***,the overall modeled impact reduction is insufficient following national objectives and remains limited for the land use *** results highlight the innovative application of life cycle assessment led at a local level,offering insights for the further advancement of systematic and prospective local agri-food ***,they provide guidance for local authorities to enhance the sustainability of planning strategies.

关键词： Environmental analysis Territorial life cycle assessment Prospective scenario Agri-food planning Local food system

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Pacemaker post transcatheter aortic valve replacement:A multifactorial risk?

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World Journal of Cardiology 2024年第4期16卷 168-172页

作者： stephane Noble Karim Bendjelid Department of Medicine Structural Heart UnitUniversity Hospital of GenevaGeneva 1211Switzerland Department of Acute Medicine Geneva University HospitalsGeneva 1211Switzerland

Pacemaker post-transcatheter aortic valve replacement is related to multifactorial *** et al brought to the body of evidence electrocardiogram and clinical ***,procedural characteristics have at least as much impact on the final need for a permanent pacemaker and potentially on the pacing *** this regard,long-term follow-up and understanding of the impact of long-term stimulation is of utmost importance.

关键词： Transcatheter aortic valve replacement Permanent pacemaker implantation Conduction abnormalities Right bundle branch block Left bundle branch block

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Translational machinery and translation regulation in axon regeneration

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Neural Regeneration Research 2025年第5期20卷 1392-1394页

作者： Homaira Nawabi stephane Belin Univ.Grenoble Alpes InsermU1216Grenoble Institut NeurosciencesGrenobleFrance

Over the centuries,the regeneration field has been puzzled by the dual response of the central nervous system(CNS-brain,spinal cord,cranial nervesⅠandⅡ)and the peripheral nervous system(PNS that refers to all the nerves that innervate muscles,skin,organs,bones among others).Even Ramon y Cajal had noticed that an injury to the PNS often leads to axon regrowth,in contrast to the CNS.

关键词： nerves organs muscles

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Low-temperature catalytic methane deep oxidation over sol-gel derived mesoporous hausmannite (Mn_(3)O_(4)) spherical particles

ChemPhysMater

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ChemPhysMater 2024年第3期3卷 329-340页

作者： Patrick Ndouka Ndouka stephane Kenmoe Jacques Richard Mache Elie Acayanka Dick Hartmann Douma Ralph Gebauer Patrick Mountapmbeme Kouotou Department of Chemistry Faculty of SciencesUniversity of MarouaP.O.Box 814 MarouaCameroon Department of Theoretical Chemistry University of Duisburg-EssenD-45141 EssenGermany Department of Mining Engineering School of Geology and Mining EngineeringUniversity of NgaoundéréP.O.Box 115 MeigangaCameroon Department of Inorganic Chemistry Faculty of ScienceUniversity of YaoundéIP.O.Box 812 YaoundéCameroon Groupe de Simulations Numériques en Magnétisme et Catalyse Facultédes Sciences et TechniquesUniversitéMarien NgouabiB.P.69 BrazzavilleCongo The Abdus Salam International Centre for Theoretical Physics(ICTP) 34151 TriesteItaly National Advanced School of Engineering of Maroua University of MarouaP.O.Box 46 MarouaCameroon Higher Institute of Agriculture WoodWater and EnvironmentUniversity of EbolowaP.O.Box 118 EbolowaCameroon

In this study,Mn_(3)O_(4) spherical particles(SPs)were synthesized by the sol-gel process,after which they were thermally annealed at 400℃,and comprehensively characterized.X-ray Diffraction(XRD)revealed that Mn_(3)O_(4) exhibited a tetragonal spinel structure,and Fourier transformed infrared(FTIR)spectroscopy identified surfaceadsorbed functional *** electron microscopy(SEM)and the specific surface area analyses by Brunauer−Emmett−Teller(BET)revealed a porous,homogeneous surface composed of strongly agglomerated spherical grains with an estimated average particle size of∼35 nm,which corresponded to a large specific surface area of∼81.5 m^(2)/g.X-ray photoelectron spectroscopy(XPS)analysis indicated that Mn_(3)O_(4) was composed of metallic cations(Mn^(4+),Mn_(3)+,and Mn^(2+))and oxygen species(O_(2)−,OH−and CO_(3)2−).The optical bandgap energy is∼2.55 *** of the catalytic performance of the Mn_(3)O_(4) SPs indicated T90 conversion of CH4 to CO_(2) and H2O at 398℃ for gas hourly space velocity(GHSV)of 72000 mL^(3) g^(−1) h^(−1).This observed performance can be attributed to the cooperative effects of the smallest spherical grain size with a mesoporous structure,which is responsible for the larger specific surface area and available surface-active oxygenated *** cooperative effect of the good reducibility,higher ratio of active species(OLat/OAds),and results of density functional theory(DFT)calculations suggested that the total oxidation of CH4 over the mesoporous Mn_(3)O_(4) SPs might take place via a two-term process in which both the Langmuir−Hinshelwood and Mars−van Krevelen mechanisms are cooperatively involved.

关键词： Sol-gel Manganese oxide Catalytic oxidation Methane Langmuir−Hinshelwood mechanism Mars−van Krevelen route Two−term process

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Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry traces the geographical source of Biomphalaria pfeifferi and Bulinus forskali,involved in schistosomiasis transmission

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Infectious Diseases of Poverty 2024年第1期13卷 98-99页

作者： Papa Mouhamadou Gaye EI Hadj Ibrahima Ndiaye Souleymane Doucoure Doudou Sow Mapenda Gaye Ndiaw Goumballa Carole Cassagne Coralie L'Ollivier Oleg Medianikov Cheikh Sokhna stephane Ranque Aix-Marseille University IRD AP-HM SSA VITROME Marseille France VITROME International IRD-UCAD Campus Dakar Senegal Hospital-University Institut (IHU) Mediterranée Infection Marseille France Departement of Animal Biology Faculty of Sciences and Techniques UCAD Dakar Senegal Department of Parasitology-Mycology UFR Sciences de la Santé Université Gaston Berger Saint-Louis Senegal

Background Freshwater snails of the genera Bulinus spp.,Biomphalaria spp.,and Oncomelania *** the main intermediate hosts of human and animal *** of these snails has long been based on mor-phological and/or genomic criteria,which have their *** limitations include a lack of precision for the morphological tool and cost and time for the DNA-based ***,Matrix-Assisted Laser Desorp-tion/lonization Time-Of-Flight(MALDI-TOF)mass spectrometry,a new tool used which is routinely in clinical microbi-ology,has emerged in the field of malacology for the identification of freshwater *** study aimed to evaluate the ability of MALDI-TOF MS to identify Biomphalaria pfeifferi and Bulinus forskali snail populations according to their *** This study was conducted on 101 *** and 81 *** snails collected in three distinct geo-graphical areas of Senegal(the North-East,South-East and central part of the country),and supplemented with wild and laboratory *** which had previously been morphologically described were identified by MALDl-TOF MS[identification log score values(LSV)≥1.7],after an initial blind test using the pre-existing *** DNA-based identification,new reference spectra of ***(n=10)and ***(n=5)from the geographical areas were added to the MALDI-TOF spectral *** final blind test against this updated database was per-formed to assess identification at the geographic source *** MALDI-TOF MS correctly identified 92.1%of 101 *** snails and 98.8%of 81 *** *** the final blind test,88%of 166 specimens were correctly identified according to both their species and sampling site,with LSVs ranging from 1.74 to *** geographical source was adequately identified in 90.1%of 91 *** and 85.3%of 75 *** *** Our findings demonstrate that MALDI-TOF MS can identify and differe

关键词： Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry Snail Intermediate host Biomphalaria pfeifferi Bulinus forskali Schistosomiasis Senegal

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Comparative Study of the Types of Photovoltaic Panels Used in Solar Pumping Systems in Dry Tropical Zones: Case of Adamawa Region in Cameroon

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Open Journal of Energy Efficiency 2024年第3期13卷 79-87页

作者： Boussaibo Andre Waoudowa Kande Veronique Ndjiya Ngasop stephane Gautier Kitmo Department of Electrical Engineering University Institute of Ngaoundr Ngaoundr Cameroon Department of Electrical Energy and Automation National School of Agro-Industrial Sciences Ngaoundr Cameroon Department of Physics University of Ngaoundr Ngaoundr Cameroon

In the dry tropical zone where access to water is increasingly difficult for populations, solar pumping units are increasingly installed to provide water to population. In the local market, there are essentially two types of solar panels, namely monocrystalline and polycrystalline. However, the part of the local market is more dominated by the polycrystalline panel. In this work, comparative studies are carried out in order to characterize the two types of solar panels with regard to local constraints. Tests were carried out over the course of the sun to establish the performance of each type. The panels used have the same electrical characteristics and are connected to loads with same characteristics. Under the set operating conditions, the monocrystalline panel presents more performance than the polycrystalline panel. Although the local market is dominated by the polycrystalline panel, dust deposition tests on the surface of the panels show that the performance of the polycrystalline panel is more affected compared to the performance of the monocrystalline panel.

关键词： Solar Pumping Monocrystalline Cell Polycrystalline Cell Dry tropical Zone Dustdeposit

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