Philippe JEAN-PIERRE
Professeur des universités en sciences de gestion
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Undernutrition, socio-demographic characteristics and eating habits of the elderly
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Thierno Mamadou MillimonoAlioune CamaraGustave MabiamaFanta ToureSidikiba SidibéPierre-Marie PreuxJean-Claude DesportPhilippe FayemendyPierre Jésus
Undernutrition, socio-demographic characteristics and eating habits of the elderly
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Thierno Mamadou MillimonoAlioune CamaraGustave MabiamaFanta ToureSidikiba SidibéPierre-Marie PreuxJean-Claude DesportPhilippe FayemendyPierre Jésus
- Organismes : Epidémiologie des Maladies Chroniques en zone tropicale Université Gamal Abdel Nasser de Conakry Université de Douala Université Gamal Abdel Nasser de Conakry Université Gamal Abdel Nasser de Conakry Epidémiologie des Maladies Chroniques en zone tropicale Epidémiologie des Maladies Chroniques en zone tropicale Nutrition Resources Center CERENUT, Isle Epidémiologie des Maladies Chroniques en zone tropicale Nutrition Resources Center CERENUT, Isle Epidémiologie des Maladies Chroniques en zone tropicale Nutrition Resources Center CERENUT, Isle
- Publié dans Clinical Nutrition ESPEN le 24/10/2020
Résumé : Background and aims: Ageing is often accompanied by a decrease of food consumption, possibly leading to undernutrition. A single nutritional study was conducted in 2011 in the general population, showing that 5.5% of people aged >65 years were undernourished. The aim of our study was to assess the prevalence of undernutrition in the elderly and its relationship with sociodemographic characteristics and dietary habits. Methods: A cross-sectional study was conducted on a representative sample of subjects aged ≥60 years in urban and rural areas of the country's eight administrative regions. A questionnaire including socio-demographic data, food consumption frequencies and anthropometric measurements was used. Student's t-test and Man Whitney test were used with a significance level of 5%. A multivariate analysis was performed between undernutrition and the other factors collected. Results: 1698 older adults were included (male: 63.5%, sex ratio M/F = 1.7), with a mean age of 71.6 ± 9.4 years and a BMI of 22.6 ± 4.4 kg/m2. The prevalence of undernutrition was 14.4%. Undernutrition was significantly associated with age 80-89 years and ≥90 years, (p = 0.0001 and p = 0.0001 respectively), male sex (p = 0.006), rural areas (p = 0.002), being in activity (p = 0.009) and fish consumption (p = 0.039). Breakfast was consumed every day in 87.2% of cases, lunch in 74.3% and dinner in 83.2%. Rice and bread were the most consumed food. Conclusion: Early detection of nutritional disorders, nutritional education and promotion of a balanced diet could help improve the health of the elderly.
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2024 update of the recommendations of the French Society of Rheumatology for the diagnosis and management of patients with rheumatoid arthritis
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Bruno FautrelJoanna KedraClaire RempenaultPierre-Antoine JugeJuliette DrouetJérôme AvouacAthan BailletOlivier BrocqGuillermo Carvajal AlegriaArnaud ConstantinEmmanuelle DernisCécile Gaujoux-VialaVincent GoebJacques-Eric GottenbergBenoit Le GoffHubert MarotteChristophe RichezJean-Hugues SalmonAlain SarauxEric SenbelRaphaèle SerorAnne TournadreOlivier VittecoqPascale EscaffreDanielle VacherPhilippe DieudéClaire Immediato Daien
2024 update of the recommendations of the French Society of Rheumatology for the diagnosis and management of patients with rheumatoid arthritis
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Bruno FautrelJoanna KedraClaire RempenaultPierre-Antoine JugeJuliette DrouetJérôme AvouacAthan BailletOlivier BrocqGuillermo Carvajal AlegriaArnaud ConstantinEmmanuelle DernisCécile Gaujoux-VialaVincent GoebJacques-Eric GottenbergBenoit Le GoffHubert MarotteChristophe RichezJean-Hugues SalmonAlain SarauxEric SenbelRaphaèle SerorAnne TournadreOlivier VittecoqPascale EscaffreDanielle VacherPhilippe DieudéClaire Immediato Daien
- Organismes : Institut Pierre Louis d'Epidémiologie et de Santé Publique CHU Pitié-Salpêtrière [AP-HP] Institut Pierre Louis d'Epidémiologie et de Santé Publique CHU Pitié-Salpêtrière [AP-HP] AP-HP - Hôpital Bichat - Claude Bernard [Paris] Université Paris Cité Physiopathologie et Epidémiologie des Maladies Respiratoires Hôpital Lapeyronie [CHU Montpellier] Institut Pierre Louis d'Epidémiologie et de Santé Publique Hôpital Cochin [AP-HP] Institut Cochin Translational Innovation in Medicine and Complexity / Recherche Translationnelle et Innovation en Médecine et Complexité - UMR 5525 Centre Hospitalier Princesse Grace Université de Tours Centre Hospitalier Régional Universitaire de Tours Centre de biophysique moléculaire Centre Hospitalier Universitaire de Toulouse Université Toulouse III - Paul Sabatier Institut Toulousain des Maladies Infectieuses et Inflammatoires CHU Caen Normandie – Centre Hospitalier Universitaire de Caen Normandie Institut Desbrest d'Epidémiologie et de Santé Publique Centre Hospitalier Universitaire de Nîmes CHU Amiens-Picardie HEMATIM - Hématopoïèse et immunologie - UR UPJV 4666 Rhumatologie [CHU Amiens] Université de Picardie Jules Verne Institution Nationale des Invalides - Centre d’Etudes et de Recherche sur l’Appareillage des Handicapés Leeds Teaching Hospitals NHS Trust CHU Rouen Centre Hospitalier Universitaire [Strasbourg] NANTES UNIVERSITÉ - École Centrale de Nantes Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] Santé Ingénierie Biologie Saint-Etienne Immunology from Concept and Experiments to Translation = Immunologie Conceptuelle, Expérimentale et Translationnelle Service de Rhumatologie [CHU Pellegrin] Hôpital universitaire Robert Debré [Reims] Centre Hospitalier Régional Universitaire de Brest Lymphocytes B, Autoimmunité et Immunothérapies LabEX IGO Immunothérapie Grand Ouest Hôpital Bicêtre [AP-HP, Le Kremlin-Bicêtre] Centre de recherche en Immunologie des Infections virales et des maladies auto-immunes Unité de Nutrition Humaine CHU Clermont-Ferrand Université Clermont Auvergne Service Rhumatologie [CHU Clermont-Ferrand] CHU Rouen Association Nationale de Défense contre l'Arthrite Rhumatoide Physiopathologie et Epidémiologie des Maladies Respiratoires AP-HP - Hôpital Bichat - Claude Bernard [Paris] Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] Hôpital Lapeyronie [CHU Montpellier]
- Publié dans Joint Bone Spine le 31/10/2020
Résumé : The French Society of Rheumatology recommendations for managing rheumatoid arthritis (RA) has been updated by a working group of 21 rheumatology experts, 4 young rheumatologists and 2 patient association representatives on the basis of the 2023 version of the European Alliance of Associations for Rheumatology (EULAR) recommendations and systematic literature reviews. Two additional topics were addressed: people at risk of RA development and RA-related interstitial lung disease (RA-ILD). Four general principles and 19 recommendations were issued. The general principles emphasize the importance of a shared decision between the rheumatologist and patient and the need for comprehensive management, both drug and non-drug, for people with RA or at risk of RA development. In terms of diagnosis, the recommendations stress the importance of clinical arthritis and in its absence, the risk factors for progression to RA. In terms of treatment, the recommendations incorporate recent data on the cardiovascular and neoplastic risk profile of Janus kinase inhibitors. With regard to RA-ILD, the recommendations highlight the importance of clinical screening and the need for high-resolution CT scan in the presence of pulmonary symptoms. RA-ILD management requires collaboration between rheumatologists and pulmonologists. The treatment strategy is based on controlling disease activity with methotrexate or targeted therapies (mainly abatacept or rituximab). The prescription for anti-fibrotic treatment should be discussed with a pulmonologist with expertise in RA-ILD.
Fichiers liés : 2024 Fautrel et al.pdf
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Effect 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)
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Jean-Pierre FratRémi CoudroyJean-Pierre QuenotChristophe GuittonJulio BadieArnaud GacouinStephan EhrmannAlexandre DemouleFabien JarousseauGuillaume CarteauxJean-Philippe RigaudJean ReignierNicholas SedillotDamien ContouFrançois M BeloncleCédric DaubinAnne-Florence DureauAbdelhamid FatahMarie-Catherine BesseAlexis FerreEmanuele TurbilHamid MerdjiLouis-Marie GalerneauBéatrice LacombeJean-Christophe RichardAntoine RomenAgathe DelboveGwénaël PratAlexandre LautretteGwenhaël ColinEdouard SoumGaël BourdinGonzalo HernándezStéphanie RagotArnaud W. Thille
Effect 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)
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Jean-Pierre FratRémi CoudroyJean-Pierre QuenotChristophe GuittonJulio BadieArnaud GacouinStephan EhrmannAlexandre DemouleFabien JarousseauGuillaume CarteauxJean-Philippe RigaudJean ReignierNicholas SedillotDamien ContouFrançois M BeloncleCédric DaubinAnne-Florence DureauAbdelhamid FatahMarie-Catherine BesseAlexis FerreEmanuele TurbilHamid MerdjiLouis-Marie GalerneauBéatrice LacombeJean-Christophe RichardAntoine RomenAgathe DelboveGwénaël PratAlexandre LautretteGwenhaël ColinEdouard SoumGaël BourdinGonzalo HernándezStéphanie RagotArnaud W. Thille
- Organismes : CIC Poitiers – Centre d'investigation clinique de Poitiers (CIC 1402) Centre hospitalier universitaire de Poitiers = Poitiers University Hospital CIC Poitiers – Centre d'investigation clinique de Poitiers (CIC 1402) Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand Hôtel-Dieu de Nantes Hôpital Nord Franche-Comté [Hôpital de Trévenans] Centre Hospitalier Universitaire [Rennes] Centre d'Investigation Clinique [Rennes] Université de Rennes - Faculté de Médecine Centre d’Etude des Pathologies Respiratoires [Tours] Centre d’Investigation Clinique [Tours] CIC 1415 Centre Hospitalier Régional Universitaire de Tours Réseau CRICS-TRIGGERSEP [Clinical Research in Intensive Care and Sepsis - TRIal Group for Global Evaluation and Research in SEPsis – Labellisé F-CRIN (French Clinical Research Infrastructure Network)] Neurophysiologie Respiratoire Expérimentale et Clinique CHU Pitié-Salpêtrière [AP-HP] Centre Hospitalier de Cholet Hôpital Henri Mondor Service de réanimation polyvalente [Centre Hospitalier de Dieppe] Centre Hospitalier Universitaire de Nantes = Nantes University Hospital Centre Hospitalier Fleyriat [Bourg en Bresse] Centre hospitalier Victor Dupouy [Centre hospitalier d'Argenteuil] Centre Hospitalier Universitaire d'Angers Service de Soins Intensifs [CHU Caen] After ROSC research network [Paris, France] Groupe hospitalier de la région de Mulhouse et Sud-Alsace Centre Hopitalier Pierre Oudot [Bourgoin-Jallieu] Service de médecine interne [CHU Caen] Laboratoire de Mathématiques et de leurs Applications [Pau] Università degli Studi di Sassari = University of Sassari [Sassari] Hôpitaux Universitaires de Strasbourg Nanomédecine Régénérative Hypoxie et PhysioPathologie Centre Hospitalier Universitaire [CHU Grenoble] Groupe Hospitalier Bretagne Sud Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé Modeling & analysis for medical imaging and Diagnosis Centre hospitalier de Pau Centre hospitalier Bretagne Atlantique (Morbihan) Centre Hospitalier Régional Universitaire de Brest Département Anesthésie, Réanimation et Soins Continus [Centre Jean Perrin - Clermont-Ferrand] Centre Hospitalier Départemental - Hôpital de La Roche-sur-Yon After ROSC research network [Paris, France] CHU Gabriel Montpied [Clermont-Ferrand] Centre hospitalier Saint Joseph - Saint Luc [Lyon] Centro Hospitalario de Toledo Université de Poitiers – UFR Santé [Faculté de Médecine et de Pharmacie] CIC Poitiers – Centre d'investigation clinique de Poitiers (CIC 1402) Centre hospitalier universitaire de Poitiers = Poitiers University Hospital
- Publié dans BMJ Open le 26/10/2020
Résumé : Introduction: 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. Method and analysis: 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. Ethics and dissemination: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. Trial registration: number NCT04468126.
Fichiers liés : bmjopen-14-10.pdf
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Efficacy and safety of targeted therapies in VEXAS syndrome: retrospective study from the FRENVEX
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Jérome HadjadjYann NguyenDalila MouloudjRim BourguibaMaël HeibligHassina AlouiChloe McavoyValentin LacombeSamuel ArdoisCorrado CampochiaroAlexandre MariaCyrille CoustalThibault ComontEstibaliz LazaroFrancois LifermannGuillaume Le GuennoHervé LobbesVincent GrobostRoderau OuthJulien CampagneAnais Dor-EtienneAlice GarnierYvan JamillouxAntoine DossierMaxime SamsonSylvain AudiaBarbara NicolasAlexis MathianBaptiste de MalepradeBenjamin de Sainte-MarieBenoit FaucherJean-David BouazizJonathan BronerCyril DumainCarole AntoineBenjamin CarpentierBrice CastelCeline Lartigau-RoussinÉtienne CrickxGeoffroy VolleDamien FayardPaul DeckerThomas MoulinetAnaël DumontAlexandre NguyenAchille AoubaJean-Philippe MartellosioMatthieu LevavasseurSebastien PuigrenierPascale AntoineJean-Thomas GiraudOlivier HermineCarole LacoutNihal MartisJean-Denis KaramFrancois ChassetLaurent ArnaudPaola MarianettiChristophe DelignyThibaud ChazalPascal Woaye-HuneMurielle Roux-SauvatAurore MeyerPierre SujobertPierre HirschNoemie AbisrorPierre FenauxOlivier KosmiderVincent JachietOlivier FainBenjamin TerrierArsène MékinianSophie Georgin-LavialleIsabelle MelkiLionel AdesLin Pierre ZhaoAlexandra AudemardMikael EbboOdile Beyne RauzyAlexandre BelotRaphaël BorieYgal BenhamouGaetan SauvetreKhalil El KarouiFrançois RodriguesLouis TerriouJeremie Dion
Efficacy and safety of targeted therapies in VEXAS syndrome: retrospective study from the FRENVEX
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Jérome HadjadjYann NguyenDalila MouloudjRim BourguibaMaël HeibligHassina AlouiChloe McavoyValentin LacombeSamuel ArdoisCorrado CampochiaroAlexandre MariaCyrille CoustalThibault ComontEstibaliz LazaroFrancois LifermannGuillaume Le GuennoHervé LobbesVincent GrobostRoderau OuthJulien CampagneAnais Dor-EtienneAlice GarnierYvan JamillouxAntoine DossierMaxime SamsonSylvain AudiaBarbara NicolasAlexis MathianBaptiste de MalepradeBenjamin de Sainte-MarieBenoit FaucherJean-David BouazizJonathan BronerCyril DumainCarole AntoineBenjamin CarpentierBrice CastelCeline Lartigau-RoussinÉtienne CrickxGeoffroy VolleDamien FayardPaul DeckerThomas MoulinetAnaël DumontAlexandre NguyenAchille AoubaJean-Philippe MartellosioMatthieu LevavasseurSebastien PuigrenierPascale AntoineJean-Thomas GiraudOlivier HermineCarole LacoutNihal MartisJean-Denis KaramFrancois ChassetLaurent ArnaudPaola MarianettiChristophe DelignyThibaud ChazalPascal Woaye-HuneMurielle Roux-SauvatAurore MeyerPierre SujobertPierre HirschNoemie AbisrorPierre FenauxOlivier KosmiderVincent JachietOlivier FainBenjamin TerrierArsène MékinianSophie Georgin-LavialleIsabelle MelkiLionel AdesLin Pierre ZhaoAlexandra AudemardMikael EbboOdile Beyne RauzyAlexandre BelotRaphaël BorieYgal BenhamouGaetan SauvetreKhalil El KarouiFrançois RodriguesLouis TerriouJeremie Dion
- Organismes : Immuno-Biologie des Lymphomes [CIRI] Service d’Hématologie [Centre Hospitalier Lyon Sud - HCL] CHU Estaing [Clermont-Ferrand] Institut Pascal Interactions hôte-greffon-tumeur, ingénierie cellulaire et génique - UFC (UMR INSERM 1098) Interactions hôte-greffon-tumeur, ingénierie cellulaire et génique - UFC (UMR INSERM 1098) CHU Dijon Université de Bourgogne Interactions hôte-greffon-tumeur, ingénierie cellulaire et génique - UFC (UMR INSERM 1098)
- Publié dans Annals of the Rheumatic Diseases le 26/10/2020
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Prevention of perioperative venous thromboembolism: 2024 guidelines from the French Working Group on Perioperative Haemostasis (GIHP) developed in collaboration with the French Society of Anaesthesia and Intensive Care Medicine (SFAR), the French Society of Thrombosis and Haemostasis (SFTH) and the French Society of Vascular Medicine (SFMV) and endorsed by the French Society of Digestive Surgery (SFCD), the French Society of Pharmacology and Therapeutics (SFPT) and INNOVTE (Investigation Network On Venous ThromboEmbolism) network
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Anne GodierDominique LasneGilles PernodNormand BlaisFanny BonhommeFanny BounesAlex BourguignonAriel CohenEmmanuel de MaistrePierre FontanaJean-Philippe GalanaudDelphine Garrigue HuetAlexandre GodonIsabelle Gouin-ThibaultSamia JebaraSilvy LaporteThomas LecompteDan LongroisJerrold H LevyGrégoire Le GalYves GruelAlexandre MansourAnne-Céline MartinMikael MazighiPierre-Emmanuel MorangeSerge MotteFrançois MullierPhilippe NguyenNadia RosencherStéphanie RoulletPierre-Marie RoyJean-François SchvedMarie-Antoinette Pietri-SevestrePierre SiéSophie SusenCharles TacquardAndré VincentelliPaul ZuffereyPatrick MismettiPierre Albaladejo
Prevention of perioperative venous thromboembolism: 2024 guidelines from the French Working Group on Perioperative Haemostasis (GIHP) developed in collaboration with the French Society of Anaesthesia and Intensive Care Medicine (SFAR), the French Society of Thrombosis and Haemostasis (SFTH) and the French Society of Vascular Medicine (SFMV) and endorsed by the French Society of Digestive Surgery (SFCD), the French Society of Pharmacology and Therapeutics (SFPT) and INNOVTE (Investigation Network On Venous ThromboEmbolism) network
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Anne GodierDominique LasneGilles PernodNormand BlaisFanny BonhommeFanny BounesAlex BourguignonAriel CohenEmmanuel de MaistrePierre FontanaJean-Philippe GalanaudDelphine Garrigue HuetAlexandre GodonIsabelle Gouin-ThibaultSamia JebaraSilvy LaporteThomas LecompteDan LongroisJerrold H LevyGrégoire Le GalYves GruelAlexandre MansourAnne-Céline MartinMikael MazighiPierre-Emmanuel MorangeSerge MotteFrançois MullierPhilippe NguyenNadia RosencherStéphanie RoulletPierre-Marie RoyJean-François SchvedMarie-Antoinette Pietri-SevestrePierre SiéSophie SusenCharles TacquardAndré VincentelliPaul ZuffereyPatrick MismettiPierre Albaladejo
- Organismes : Hôpital Européen Georges Pompidou [APHP] Innovations thérapeutiques en hémostase = Innovative Therapies in Haemostasis Hémostase, Inflammation, Thrombose Hôpital Necker - Enfants Malades [AP-HP] F-Crin INvestigation Network On Venous Thrombo-Embolism [CHU Saint-Etienne] Centre Hospitalier Universitaire [CHU Grenoble] Université Grenoble Alpes Centre Hospitalier de l'Université de Montréal Hôpitaux Universitaires de Genève = University Hospital of Geneva [Genève] Centre Hospitalier Universitaire de Toulouse Institut des Maladies Métaboliques et Casdiovasculaires Centre Hospitalier de l'Université de Montréal CHU Tenon [AP-HP] CHU Dijon Hôpitaux Universitaires de Genève = University Hospital of Geneva [Genève] University of Toronto Centre Hospitalier Régional Universitaire [CHU Lille] Centre Hospitalier Universitaire [CHU Grenoble] Institut de recherche en santé, environnement et travail Centre Hospitalier Universitaire de Rennes [CHU Rennes] = Rennes University Hospital [Pontchaillou] Hôtel-Dieu de France Santé Ingénierie Biologie Saint-Etienne Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] Faculté de Médecine [Nancy] Fédération Hospitalo-Universitaire PRecision medicine for cOMprehensIve care of Critically ill patiEnts Laboratoire de Recherche Vasculaire Translationnelle AP-HP - Hôpital Bichat - Claude Bernard [Paris] Duke University [Durham] University of Ottawa [Ottawa] Membrane Signalling and Inflammation in reperfusion Injuries Institut de recherche en santé, environnement et travail Centre Hospitalier Universitaire de Rennes [CHU Rennes] = Rennes University Hospital [Pontchaillou] Innovations thérapeutiques en hémostase = Innovative Therapies in Haemostasis Optimisation thérapeutique en Neuropsychopharmacologie Centre recherche en CardioVasculaire et Nutrition = Center for CardioVascular and Nutrition research Université libre de Bruxelles Université Catholique de Louvain = Catholic University of Louvain Université de Reims Champagne-Ardenne Hémostase, Inflammation, Thrombose MitoVasc - Physiopathologie Cardiovasculaire et Mitochondriale F-Crin INvestigation Network On Venous Thrombo-Embolism [CHU Saint-Etienne] Université de Montpellier CHU Amiens-Picardie CHirurgie, IMagerie et REgénération tissulaire de l’extrémité céphalique - Caractérisation morphologique et fonctionnelle - UR UPJV 7516 Récepteurs Nucléaires, Maladies Métaboliques et Cardiovasculaires - U 1011 Biologie et Pharmacologie des Plaquettes sanguines : hémostase, thrombose, transfusion Centre Hospitalier Régional Universitaire [CHU Lille] Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] Santé Ingénierie Biologie Saint-Etienne Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] Santé Ingénierie Biologie Saint-Etienne Centre Hospitalier Universitaire [CHU Grenoble]
- Publié dans Anaesthesia Critical Care & Pain Medicine le 27/10/2020
Résumé : Background Any surgical procedure carries a risk for venous thromboembolism (VTE), albeit variable. Improvements in medical and surgical practices and the shortening of care pathways due to the development of day surgery and enhanced recovery after surgery, have reduced the perioperative risk for VTE. Objective A collaborative working group of experts in perioperative haemostasis updated in 2024 the recommendations for the Prevention of perioperative venous thromboembolism published in 2011. Methods The addressed questions were defined by 40 experts (GIHP, SFAR, SFTH and SFMV) and formulated in a PICO format. They performed the literature review and formulated recommendations according to the Grading of GRADE system. Recommendations were then validated by a vote determining the strength of each recommendation. Of note, these recommendations do not cover all surgical specialties. Especially, thromboprophylaxis in cardiac surgery, neurosurgery and obstetrics is not addressed. Results 78 recommendations were formalized into 17 sections, including patient-related VTE risk factors, types of surgery, extreme body weight, renal impairment, mechanical prophylaxis, distal deep vein thrombosis; 27 were found to have a high level of evidence (GRADE 1) and 41 a low level of evidence (GRADE 2) and 10 were expert opinion. All had strong agreement among the experts. Conclusions These guidelines help to weigh the perioperative risk for VTE (which includes the risk associated to surgery and the patient-related risk) against the adverse effects of thromboprophylaxis, either pharmacological or mechanical. This includes particularly the bleeding risk induced by antithrombotic drugs as well as costs.
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Negative Asymmetric Response of Pantropical Gross Primary Productivity to Precipitation Anomalies
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Sassan S SaatchiGuanyu DongPhilippe CiaisXiangming XiaoJingfeng XiaoXiuzhi ChenYiqi LuoShuli NiuFei JiangFrédéric FrappartWigneron J.-P.Xing LiTianxiang CuiLi PanRasmus Fensholt
Negative Asymmetric Response of Pantropical Gross Primary Productivity to Precipitation Anomalies
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Sassan S SaatchiGuanyu DongPhilippe CiaisXiangming XiaoJingfeng XiaoXiuzhi ChenYiqi LuoShuli NiuFei JiangFrédéric FrappartWigneron J.-P.Xing LiTianxiang CuiLi PanRasmus Fensholt
- Organismes : Southwest University [Chongqing] Southwest University [Chongqing] Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] University of Oklahoma University of New Hampshire Sun Yat-sen University [Guangzhou] University of Oklahoma Chinese Academy of Sciences [Beijing] Nanjing University Interactions Sol Plante Atmosphère Interactions Sol Plante Atmosphère Seoul National University [Seoul] Nanjing Forestry University University of Oklahoma IT University of Copenhagen
- Publié dans Earth's Future le 04/09/2017
Résumé :The carbon sink in pantropical biomes play a crucial role in modulating the inter-annual variations of global terrestrial carbon balance and is threatened by extreme climate events. However, it has not been carefully examined whether an increase in tropical gross primary productivity (GPP) can compensate the decrease during precipitation anomalies. Using the asymmetry index (AI) and multiple GPP products, we assessed responses of pantropical GPP to precipitation anomalies during 2001-2022. Positive AI indicates that GPP increases are greater than GPP decreases during precipitation anomalies, and vice versa. Our results showed an average negative pantropical GPP asymmetry, that is, GPP decreases exceeded the GPP increases during precipitation anomalies. In addition, a positive AI was found in tropical hyper-arid and arid regions, which is opposite to the negative AI observed in tropical semi-arid, sub-humid, and humid regions. This suggest that tropical GPP asymmetry changes from positive to negative as the moisture increases. Notably, a significant decreasing trend of negative AI was observed over the entire tropical region, indicating that the negative effect of inter-annual precipitation variations on pantropical vegetation productivity has enhanced. Considering the model predicted increasing climate variability and extremes, the negative impact of precipitation variability on tropical carbon cycle may continue to intensify. Lastly, the divergence in AI estimates among multiple GPP products highlight the need to further improve our understanding of the response of tropical carbon cycle to climate changes, especially for the tropical humid regions.
Plain Language Summary Tropical biomes play an essential role in controlling the global carbon balance but has been threatened by extreme climate events recently. Whether the increase in tropical GPP can compensate the GPP decrease during precipitation anomalies is still poorly known. In this study, we found an average negative asymmetric GPP response to precipitation anomalies over the entire tropics during 2001-2022, that is, GPP decreases exceeded the GPP increases during precipitation anomalies. Meanwhile, we found that the tropical GPP was shifted from positive asymmetry to negative asymmetry as the moisture increases. Besides, a significantly decreasing trend of GPP asymmetry was observed over the study period, suggesting that the negative effect of inter-annual precipitation variations on pantropical GPP has intensified.
Fichiers liés : Earth s Future - 2024 - Fan - Negative Asymmetric Response of Pantropical Gross Primary Productivity to Precipitation.pdf
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Impact of facial nerve resection in parotid cancer abutting the facial nerve without preoperative paralysis: a multicentric propensity score-based analysis
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Florian ChateletSylvie ChevretNicolas FakhryCaroline EvenOlivier MalardErwan de MonèsNicolas SaroulFrançois MouawadMarie de BoutrayOlivier MauvaisSébastien VergezDiane EvrardChristian RighiniPhilippe SchultzRobin BaudouinGilles PoissonnetSarah AtallahFabienne HarounSylvain MorinièreCamille EvrardPierre PhilouzeA. PaascheMaria LesnikYann LelongePhilippe HermanBenjamin VerillaudC. Ala-EddineK. AubryE. BabinC. BachC. BadoualA.C. BaglinB. BarryV. BastitB. BaujatK. BenezeryR.J. BensadounN. BenzerdjebM. BernadachC. BertolusJérémie BettoniA. Biet-HornsteinD. BodmerP. BoisselierC. Boulagnon-RombiL. BozecA. Bozorg GrayeliE. BrenetL. BrugelG. CalaisV. CalugaruS. CambyO. CasiraghiE. CassagnauC. CastainJ. CastelliP. CeruseF. ChabolleD. ChevalierO. ChoussyM. ClasseF. ClatotEmilien ColinJean-Marc ConstansA. CosteF. CosteV. CostesJ.P. CottierAlexandre CoutteJ.P. CristofariD. CupissolJ. DelgrandeJean-Pierre DelordBernard DevauchelleL. DigueGilles DolivetM. DoréS. DufloXavier DufourC. DupinE. EkerF. EspitalierC. EvenC. EvrardE. FabianoS. FaivreN. FakhryF.R. FerrandJ. FrandonD. FranettiL. de GaboryC. GalyM. GarcierR. GarrelH. GauthierL. GilainS. GuihardS. GuillermC. HalimiS. HansP. HermanAline HouessinonM. HourseauF. HuguetE. JadaudRoger JankowskiC. JeanneF. JegouxM. JuliéronR. KaciM.-C. KaminskyH. de KermadecF. KolbS. KrepsM. LaadhariJ. Lacau Saint GuilyL. LaccoureyeM. LaeF. LagardeA. LagrangeB. LallemantM. LamuragliaP. LangM. LapeyreA. LapierreA. Lasne CardonC. Le TourneauG. LefebvreM. LefevreY. LelongeX. LeroyM. LesnikX. LiemC. LinassierP. MaingonC. MajoufreO. MalardG. MaloufC. MarchandJ.-P. MarieT. MaurinaO. MauvaisJ.-C. MerolJ. MichelG. MineurS. MirafzalH. MirghaniA. ModestoS. Molinier-BlossierE. de MonèsS. MorinièreF. MouawadA. Moya-PlanaL. MullerE. MusatF. NguyenG. NoelF.R. Obongo-AngaM. OneaH. OrliacC. PageV. PatronJ. PestreN. Pham DangP. PhilouzeG. PoissonnetC. PonsC. PouliquenJ.-M. PradesA. PrevostC. QueirosA. RahmaniA. RambeauL. RaminS. RenardC.A. RighiniF. RollandE. SaadaF. SacinoS. SalasN. SaroulP. SchultzA. SimonaggioO. SterkersV. StrunskiA. SudakaS. Xu-ShanR. TaouachiM. TassartSylvie TestelinJ. ThariatM. Timar DavidA. TimochenkoB. ToussaintE. Uro CosteG. ValetteT. van den AbbeeleA. VaroquauxE. VauleonS. VergezB. VerillaudJ. VillaA. VillepeletM. VolondatN. VulquinI. WagnerMichel WassefL. WebertS. Wong
Impact of facial nerve resection in parotid cancer abutting the facial nerve without preoperative paralysis: a multicentric propensity score-based analysis
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Florian ChateletSylvie ChevretNicolas FakhryCaroline EvenOlivier MalardErwan de MonèsNicolas SaroulFrançois MouawadMarie de BoutrayOlivier MauvaisSébastien VergezDiane EvrardChristian RighiniPhilippe SchultzRobin BaudouinGilles PoissonnetSarah AtallahFabienne HarounSylvain MorinièreCamille EvrardPierre PhilouzeA. PaascheMaria LesnikYann LelongePhilippe HermanBenjamin VerillaudC. Ala-EddineK. AubryE. BabinC. BachC. BadoualA.C. BaglinB. BarryV. BastitB. BaujatK. BenezeryR.J. BensadounN. BenzerdjebM. BernadachC. BertolusJérémie BettoniA. Biet-HornsteinD. BodmerP. BoisselierC. Boulagnon-RombiL. BozecA. Bozorg GrayeliE. BrenetL. BrugelG. CalaisV. CalugaruS. CambyO. CasiraghiE. CassagnauC. CastainJ. CastelliP. CeruseF. ChabolleD. ChevalierO. ChoussyM. ClasseF. ClatotEmilien ColinJean-Marc ConstansA. CosteF. CosteV. CostesJ.P. CottierAlexandre CoutteJ.P. CristofariD. CupissolJ. DelgrandeJean-Pierre DelordBernard DevauchelleL. DigueGilles DolivetM. DoréS. DufloXavier DufourC. DupinE. EkerF. EspitalierC. EvenC. EvrardE. FabianoS. FaivreN. FakhryF.R. FerrandJ. FrandonD. FranettiL. de GaboryC. GalyM. GarcierR. GarrelH. GauthierL. GilainS. GuihardS. GuillermC. HalimiS. HansP. HermanAline HouessinonM. HourseauF. HuguetE. JadaudRoger JankowskiC. JeanneF. JegouxM. JuliéronR. KaciM.-C. KaminskyH. de KermadecF. KolbS. KrepsM. LaadhariJ. Lacau Saint GuilyL. LaccoureyeM. LaeF. LagardeA. LagrangeB. LallemantM. LamuragliaP. LangM. LapeyreA. LapierreA. Lasne CardonC. Le TourneauG. LefebvreM. LefevreY. LelongeX. LeroyM. LesnikX. LiemC. LinassierP. MaingonC. MajoufreO. MalardG. MaloufC. MarchandJ.-P. MarieT. MaurinaO. MauvaisJ.-C. MerolJ. MichelG. MineurS. MirafzalH. MirghaniA. ModestoS. Molinier-BlossierE. de MonèsS. MorinièreF. MouawadA. Moya-PlanaL. MullerE. MusatF. NguyenG. NoelF.R. Obongo-AngaM. OneaH. OrliacC. PageV. PatronJ. PestreN. Pham DangP. PhilouzeG. PoissonnetC. PonsC. PouliquenJ.-M. PradesA. PrevostC. QueirosA. RahmaniA. RambeauL. RaminS. RenardC.A. RighiniF. RollandE. SaadaF. SacinoS. SalasN. SaroulP. SchultzA. SimonaggioO. SterkersV. StrunskiA. SudakaS. Xu-ShanR. TaouachiM. TassartSylvie TestelinJ. ThariatM. Timar DavidA. TimochenkoB. ToussaintE. Uro CosteG. ValetteT. van den AbbeeleA. VaroquauxE. VauleonS. VergezB. VerillaudJ. VillaA. VillepeletM. VolondatN. VulquinI. WagnerMichel WassefL. WebertS. Wong
- Organismes : Université Paris Cité Epidemiology and Clinical Statistics for Tumor, Respiratory, and Resuscitation | Epidémiologie Clinique, STatistique, pour la Recherche en Santé Hopital Saint-Louis [AP-HP] Laboratoire Parole et Langage Hôpital de la Conception [CHU - APHM] Département de cancérologie cervico-faciale [Gustave Roussy] Regenerative Medicine and Skeleton Bioingénierie tissulaire CHU Clermont-Ferrand Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 Robotique médicale et mécanismes parallèles Centre Hospitalier Régional Universitaire [Montpellier] Centre Hospitalier Régional Universitaire de Besançon Centre Hospitalier Universitaire de Toulouse AP-HP - Hôpital Bichat - Claude Bernard [Paris] Centre Hospitalier Universitaire [CHU Grenoble] Centre Hospitalier Universitaire [Strasbourg] Biomatériaux et Bioingénierie UFR Sciences de la santé Simone Veil Hôpital Necker - Enfants Malades [AP-HP] Institut Universitaire de la Face et du Cou [Nice] CHU Pitié-Salpêtrière [AP-HP] Université Paris Cité Centre Hospitalier Régional Universitaire de Tours Centre hospitalier universitaire de Poitiers = Poitiers University Hospital Hospices Civils de Lyon Chirurgie maxillofaciale et Stomatologie [CHU Amiens] CHirurgie, IMagerie et REgénération tissulaire de l’extrémité céphalique - Caractérisation morphologique et fonctionnelle - UR UPJV 7516 Chirurgie maxillofaciale et Stomatologie [CHU Amiens] CHirurgie, IMagerie et REgénération tissulaire de l’extrémité céphalique - Caractérisation morphologique et fonctionnelle - UR UPJV 7516 CHU Amiens-Picardie CHirurgie, IMagerie et REgénération tissulaire de l’extrémité céphalique - Caractérisation morphologique et fonctionnelle - UR UPJV 7516 CHU Amiens-Picardie CHirurgie, IMagerie et REgénération tissulaire de l’extrémité céphalique - Caractérisation morphologique et fonctionnelle - UR UPJV 7516 Chirurgie maxillofaciale et Stomatologie [CHU Amiens] CHirurgie, IMagerie et REgénération tissulaire de l’extrémité céphalique - Caractérisation morphologique et fonctionnelle - UR UPJV 7516 Chirurgie maxillofaciale et Stomatologie [CHU Amiens] CHirurgie, IMagerie et REgénération tissulaire de l’extrémité céphalique - Caractérisation morphologique et fonctionnelle - UR UPJV 7516
- Publié dans EJSO - European Journal of Surgical Oncology le 22/10/2020
Résumé : Objectives The management of the facial nerve (FN) is a major issue in parotid cancer, especially when there is no preoperative facial palsy and FN invasion is discovered intraoperatively. The aim of this study was to assess the impact of FN resection in patients with parotid cancer abutting the FN, without pretreatment facial palsy, using a propensity score matching. Materials and methods Data from all patients treated between 2009 and 2020 for a primary parotid cancer abutting or invading the FN but without pretreatment facial palsy were extracted from the national multicentric REFCOR database. Three different definitions of tumors abutting the FN were used for sensitivity analyses, in a retrospective setting. Propensity score matching was used to assess the impact of FN resection on disease-free survival (DFS), overall survival (OS) and locoregional recurrence-free survival (LRRFS). Results A total of 163 patients with parotid cancer abutting or invading the FN without pretreatment facial palsy were included. Among them, 99 patients (61%) underwent FN resection. After overlap weighting and multiple imputation, no benefit of FN resection over preservation was found in terms of OS (HR= 1.21, p= 0.6), DFS (HR= 0.88, p= 0.5) and LRRFS (HR= 0.99, p= 1). Sensitivity analyses revealed similar results, and no significant efficacy was found in the subgroup analyses. Conclusion In this retrospective study with propensity score analysis, FN resection did not improve survival outcomes in patients without preoperative facial palsy treated surgically for a primary parotid cancer abutting the FN. In line with recent guidelines, the results of this study suggest that FN preservation should be considered whenever possible in this specific group of patients.
Fichiers liés : PIIS0748798324008035-2.pdf
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Transplant patient classification based on everolimus blood concentrations: Is there a risk of “misclassifications” using immunoassays?
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Anne-Sophie BargnouxThibault SutraStéphanie BadiouPierre-Edouard GrilletAnne-Marie DupuyIlan SzwarcGeorges-Philippe PageauxMoglie Le QuintrecJean-Paul Cristol
Transplant patient classification based on everolimus blood concentrations: Is there a risk of “misclassifications” using immunoassays?
- Type de publi. : Article dans une revue
- Date de publi. : 01/10/2024
- Auteurs : Anne-Sophie BargnouxThibault SutraStéphanie BadiouPierre-Edouard GrilletAnne-Marie DupuyIlan SzwarcGeorges-Philippe PageauxMoglie Le QuintrecJean-Paul Cristol
- Organismes : Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] Service de Biochimie et d'Hormonologie [CHU Montpellier] Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] Service de Biochimie et d'Hormonologie [CHU Montpellier] Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] Service de Biochimie et d'Hormonologie [CHU Montpellier] Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] Service de Biochimie et d'Hormonologie [CHU Montpellier] Service de Biochimie et d'Hormonologie [CHU Montpellier] Université de Montpellier Département d'Hépato-Gastroentérologie et de Transplantation Hépatique [CHU Saint-Eloi] Université de Montpellier Département d'Hépato-Gastroentérologie et de Transplantation Hépatique [CHU Saint-Eloi] Université de Montpellier Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB) Département d'Hépato-Gastroentérologie et de Transplantation Hépatique [CHU Saint-Eloi] Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] Service de Biochimie et d'Hormonologie [CHU Montpellier]
- Publié dans Clinica Chimica Acta le 30/10/2020
Fichiers liés : 2024 Bargnoux et al., Transplant patient.pdf
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Advancing CubeSats Capabilities: Ground-Based Calibration of Uvsq-Sat NG Satellite’s NIR Spectrometer and Determination of the Extraterrestrial Solar Spectrum
- Type de publi. : Article dans une revue
- Date de publi. : 30/09/2024
- Auteurs : Mustapha MeftahChristophe DufourDavid BolséeLionel van LaekenCannelle ClavierAmal ChandranChi-Kuang ChaoAlain SarkissianPatrick H. M. GalopeauAlain HauchecornePierre-Richard DahooLuc DaméAndré-Jean VieauEmmanuel BertranPierre GilbertFrédéric FerreiraJean-Luc EnglerChristophe MontaronAntoine ManginOdile Hembise Fanton D’andonNicolas CaignardAngèle MinetPierre MasoNuno PereiraÉtienne BroduSlimane BekkiCatherine BillardPhilippe Keckhut
Advancing CubeSats Capabilities: Ground-Based Calibration of Uvsq-Sat NG Satellite’s NIR Spectrometer and Determination of the Extraterrestrial Solar Spectrum
- Type de publi. : Article dans une revue
- Date de publi. : 30/09/2024
- Auteurs : Mustapha MeftahChristophe DufourDavid BolséeLionel van LaekenCannelle ClavierAmal ChandranChi-Kuang ChaoAlain SarkissianPatrick H. M. GalopeauAlain HauchecornePierre-Richard DahooLuc DaméAndré-Jean VieauEmmanuel BertranPierre GilbertFrédéric FerreiraJean-Luc EnglerChristophe MontaronAntoine ManginOdile Hembise Fanton D’andonNicolas CaignardAngèle MinetPierre MasoNuno PereiraÉtienne BroduSlimane BekkiCatherine BillardPhilippe Keckhut
- Organismes : ATMOSPHERE - LATMOS Laboratoire Atmosphères, Observations Spatiales Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique Analytic and Computational Research, Inc. - Earth Sciences ATMOSPHERE - LATMOS Laboratory for Atmospheric and Space Physics [Boulder] National Central University [Taiwan] ATMOSPHERE - LATMOS Laboratoire Atmosphères, Observations Spatiales ATMOSPHERE - LATMOS ATMOSPHERE - LATMOS Laboratoire Atmosphères, Observations Spatiales Laboratoire Atmosphères, Observations Spatiales Laboratoire Atmosphères, Observations Spatiales Laboratoire Atmosphères, Observations Spatiales Laboratoire Atmosphères, Observations Spatiales Laboratoire Atmosphères, Observations Spatiales Laboratoire Atmosphères, Observations Spatiales Analytic and Computational Research, Inc. - Earth Sciences Analytic and Computational Research, Inc. - Earth Sciences Laboratoire Atmosphères, Observations Spatiales Laboratoire Atmosphères, Observations Spatiales Laboratoire Atmosphères, Observations Spatiales Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique ATMOSPHERE - LATMOS Laboratoire Atmosphères, Observations Spatiales ATMOSPHERE - LATMOS
- Publié dans Remote Sensing le 28/10/2020
Résumé : Uvsq-Sat NG is a French 6U CubeSat (10 × 20 × 30 cm) of the International Satellite Program in Research and Education (INSPIRE) designed primarily for observing greenhouse gases (GHG) such as CO 2 and CH 4 , measuring the Earth's radiation budget (ERB), and monitoring solar spectral irradiance (SSI) at the top-of-atmosphere (TOA). It epitomizes an advancement in CubeSat technology, showcasing its enhanced capabilities for comprehensive Earth observation. Scheduled for launch in 2025, the satellite carries a compact and miniaturized near-infrared (NIR) spectrometer capable of performing observations in both nadir and solar directions within the wavelength range of 1100 to 2000 nm, with a spectral resolution of 7 nm and a 0.15°field of view. This study outlines the preflight calibration process of the Uvsq-Sat NG NIR spectrometer (UNIS), with a focus on the spectral response function and the absolute calibration of the instrument. The absolute scale of the UNIS spectrometer was accurately calibrated with a quartz-halogen lamp featuring a coiled-coil tungsten filament, certified by the National Institute of Standards and Technology (NIST) as a standard of spectral irradiance. Furthermore, this study details the ground-based measurements of direct SSI through atmospheric NIR windows conducted with the UNIS spectrometer. The measurements were obtained at the Pommier site (45.54°N, 0.83°W) in Charentes-Maritimes (France) on 9 May 2024. The objective of these measurements was to verify the absolute calibration of the UNIS spectrometer conducted in the laboratory and to provide an extraterrestrial solar spectrum using the Langley-plot technique. By extrapolating the data to AirMass Zero (AM0), we obtained high-precision results that show excellent agreement with SOLAR-HRS and TSIS-1 HSRS solar spectra. At 1.6 µm, the SSI was determined to be 238.59 ± 3.39 mW.m−2.nm−1 (k = 2). These results demonstrate the accuracy and reliability of the UNIS spectrometer for both SSI observations and GHG measurements, providing a solid foundation for future orbital data collection and analysis.
Fichiers liés : remotesensing-16-03655.pdf
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Upgrading Biomass Wastes to Graphene Quantum Dots with White-Light-Emitting Features in the Solid State
- Type de publi. : Article dans une revue
- Date de publi. : 30/09/2024
- Auteurs : Pierre MagriFranchetti P.Jean-Jacques GaumetBenoit MaxitSebastien DilibertoPhilippe Pierrat
Upgrading Biomass Wastes to Graphene Quantum Dots with White-Light-Emitting Features in the Solid State
- Type de publi. : Article dans une revue
- Date de publi. : 30/09/2024
- Auteurs : Pierre MagriFranchetti P.Jean-Jacques GaumetBenoit MaxitSebastien DilibertoPhilippe Pierrat
- Organismes : Laboratoire de Chimie et Physique - Approche Multi-échelle des Milieux Complexes Laboratoire de Chimie et Physique - Approche Multi-échelle des Milieux Complexes Laboratoire de Chimie et Physique - Approche Multi-échelle des Milieux Complexes Cordouan Technologies Institut Jean Lamour Laboratoire Lorrain de Chimie Moléculaire
- Publié dans Applied Sciences le 22/10/2020
Résumé : The emergence of bio-based carbonaceous materials for various applications has attracted significant attention during the last few years. Here, we report a rapid, efficient, and reproducible microwave-assisted synthesis of graphene quantum dots (GQDs) with identical features irrespective of the nature of biomass waste investigated. The synthesized GQDs were fully characterized by X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, transmission electron microscopy, and dynamic light scattering. The nanoparticles displayed narrow sizes of 1–2 nm and high solubility in polar solvents such as water and ethanol. The protocol described herein is advantageous in comparison to dealing with the synthesis of GQDs from biomass waste previously reported since our protocol is faster owing to the use of microwave heating and the avoidance of dialysis for the purification step. Furthermore, in solution, the water-soluble particles showed excitation-dependent photoluminescence ranging from blue to orange emission wavelengths. Interestingly, thin films displayed white-light emission under 325 nm UV-light excitation, while aggregation-induced quenching was usually observed, opening the way for their potential use as a phosphor in white-light-emitting diodes.
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