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Mosbah H, Vantyghem M, Nobécourt E, Andreelli F, Archambeaud F, Bismuth E, Briet C, Cartigny M, Chevalier B, Donadille B, Daguenel A, Fichet M, Gautier J, Janmaat S, Jéru I, Legagneur C, Leguier L, Maitre J, Mongeois E, Poitou C, Renard E, Reznik Y, Spiteri A, Travert F, Vergès B, Zammouri J, Vigouroux C, Vatier C. Therapeutic indications and metabolic effects of metreleptin in patients with lipodystrophy syndromes: Real-life experience from a national reference network. Diabetes Obes Metab 2022; 24:1565-1577. [PMID: 35445532 PMCID: PMC9541305 DOI: 10.1111/dom.14726] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/05/2022] [Accepted: 04/18/2022] [Indexed: 12/01/2022]
Abstract
AIM To describe baseline characteristics and follow-up data in patients with lipodystrophy syndromes treated with metreleptin in a national reference network, in a real-life setting. PATIENTS AND METHODS Clinical and metabolic data from patients receiving metreleptin in France were retrospectively collected, at baseline, at 1 year and at the latest follow-up during treatment. RESULTS Forty-seven patients with lipodystrophy including generalized lipodystrophy (GLD; n = 28) and partial lipodystrophy (PLD; n = 19) received metreleptin over the last decade. At baseline, the median (interquartile range [IQR]) patient age was 29.3 (16.6-47.6) years, body mass index was 23.8 (21.2-25.7) kg/m2 and serum leptin was 3.2 (1.0-4.9) ng/mL, 94% of patients had diabetes (66% insulin-treated), 53% had hypertension and 87% had dyslipidaemia. Metreleptin therapy, administered for a median (IQR) of 31.7 (14.2-76.0) months, was ongoing in 77% of patients at the latest follow-up. In patients with GLD, glycated haemoglobin (HbA1c) and fasting triglyceride levels significantly decreased from baseline to 1 year of metreleptin treatment, from 8.4 (6.5-9.9)% [68 (48-85) mmol/mol] to 6.8 (5.6-7.4)% [51(38-57) mmol/mol], and 3.6 (1.7-8.5) mmol/L to 2.2 (1.1-3.7) mmol/L, respectively (P < 0.001), with sustained efficacy thereafter. In patients with PLD, HbA1c was not significantly modified (7.7 [7.1-9.1]% [61 (54-76) mmol/mol] at baseline vs. 7.7 [7.4-9.5]% [61(57-80) mmol/mol] at 1 year), and the decrease in fasting triglycerides (from 3.3 [1.9-9.9] mmol/L to 2.5 [1.6-5.3] mmol/L; P < 0.01) was not confirmed at the latest assessment (5.2 [2.2-11.3] mmol/L). However, among PLD patients, at 1 year, 61% were responders regarding glucose homeostasis, with lower baseline leptin levels compared to nonresponders, and 61% were responders regarding triglyceridaemia. Liver enzymes significantly decreased only in the GLD group. CONCLUSIONS In this real-life setting study, metabolic outcomes are improved by metreleptin therapy in patients with GLD. The therapeutic indication for metreleptin needs to be clarified in patients with PLD.
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Affiliation(s)
- Héléna Mosbah
- Endocrinology DepartmentAssistance Publique–Hôpitaux de Paris (AP‐HP), Saint–Antoine University Hospital, National Reference Centre for Rare Diseases of Insulin Secretion and Insulin Sensitivity (PRISIS)ParisFrance
- Sorbonne University, Inserm UMR_S 938, Saint–Antoine Research CentreCardiometabolism and Nutrition University Hospital Institute (ICAN)ParisFrance
| | - Marie‐Christine Vantyghem
- Department of Endocrinology, Diabetology and Metabolism, Lille University Hospital; University of Lille, INSERM U1190European Genomic Institute for DiabetesLilleFrance
| | - Estelle Nobécourt
- Department of Endocrinology, Diabetology and MetabolismLa Réunion University HospitalSaint Pierre de la RéunionFrance
| | - Fabrizio Andreelli
- AP‐HP, Pitié‐Salpêtrière University Hospital, Department of Diabetology; Sorbonne University, INSERMNutrition and Obesity: systemic approaches « NutriOmics »ParisFrance
| | - Francoise Archambeaud
- Department of Endocrinology, Diabetology and MetabolismDupuytren University HospitalLimogesFrance
| | - Elise Bismuth
- AP‐HP, Robert‐Debré University Hospital, Department of Paediatric Endocrinology, Diabetology and MetabolismUniversity of ParisParisFrance
| | - Claire Briet
- Department of EndocrinologyDiabetology and Metabolism, Angers University Hospital, Laboratory MITOVASC, UMR CNRS 6015, INSERM 1083AngersFrance
| | - Maryse Cartigny
- Reference Centre for Rare Diseases of Genital Development DEVGEN, Endocrinology Unit, Diabetology and Paediatric Gynecology DepartmentLille University HospitalLilleFrance
| | - Benjamin Chevalier
- Department of Endocrinology, Diabetology and Metabolism, Lille University Hospital; University of Lille, INSERM U1190European Genomic Institute for DiabetesLilleFrance
| | - Bruno Donadille
- Endocrinology DepartmentAssistance Publique–Hôpitaux de Paris (AP‐HP), Saint–Antoine University Hospital, National Reference Centre for Rare Diseases of Insulin Secretion and Insulin Sensitivity (PRISIS)ParisFrance
- Sorbonne University, Inserm UMR_S 938, Saint–Antoine Research CentreCardiometabolism and Nutrition University Hospital Institute (ICAN)ParisFrance
| | - Anne Daguenel
- Department of PharmacyAP‐HP, Saint–Antoine University HospitalParisFrance
| | - Mathilde Fichet
- Department of Endocrinology, Diabetology and MetabolismRennes University HospitalRennesFrance
| | - Jean‐François Gautier
- Department of Endocrinology, Diabetology and MetabolismAP‐HP, Lariboisière University HospitalParisFrance
| | - Sonja Janmaat
- Endocrinology DepartmentAssistance Publique–Hôpitaux de Paris (AP‐HP), Saint–Antoine University Hospital, National Reference Centre for Rare Diseases of Insulin Secretion and Insulin Sensitivity (PRISIS)ParisFrance
- Sorbonne University, Inserm UMR_S 938, Saint–Antoine Research CentreCardiometabolism and Nutrition University Hospital Institute (ICAN)ParisFrance
| | - Isabelle Jéru
- Endocrinology DepartmentAssistance Publique–Hôpitaux de Paris (AP‐HP), Saint–Antoine University Hospital, National Reference Centre for Rare Diseases of Insulin Secretion and Insulin Sensitivity (PRISIS)ParisFrance
- Sorbonne University, Inserm UMR_S 938, Saint–Antoine Research CentreCardiometabolism and Nutrition University Hospital Institute (ICAN)ParisFrance
| | - Carole Legagneur
- Department of Paediatric Endocrinology, Diabetology and MetabolismUniversity Hospital Brabois‐Vandoeuvre lès NancyVandoeuvre lès NancyFrance
| | - Lysiane Leguier
- Department of Endocrinology, Diabetology and Metabolism, Lille University Hospital; University of Lille, INSERM U1190European Genomic Institute for DiabetesLilleFrance
| | - Julie Maitre
- Department of Paediatrics and Endocrinology, Diabetology and MetabolismOrléans HospitalOrléansFrance
| | - Elise Mongeois
- Department of Paediatrics and Endocrinology, Diabetology and MetabolismOrléans HospitalOrléansFrance
| | - Christine Poitou
- Nutrition Department, Sorbonne University/INSERM, Research Unit: Nutrition and Obesity; Systemic Approaches (NutriOmics)AP‐HP, Pitié‐Salpêtrière University Hospital, Reference Centre for Rare Diseases PRADORT (PRADer‐Willi Syndrome and other Rare Obesities with Eating Disorders)ParisFrance
| | - Eric Renard
- Department of Endocrinology, Diabetes and Nutrition, Montpellier University Hospital; Clinical Investigation Centre INSERM1411; Institute of Functional Genomics, CNRS, INSERMUniversity of MontpellierMontpellierFrance
| | - Yves Reznik
- Department of Endocrinology, Diabetology and MetabolismCôte de Nacre University HospitalCaenFrance
| | - Anne Spiteri
- Department of Endocrinology, Diabetology and MetabolismGrenoble University HospitalGrenobleFrance
| | - Florence Travert
- Department of Diabetology and MetabolismAP‐HP, Bichat University HospitalParisFrance
| | - Bruno Vergès
- Department of Endocrinology, Diabetology and MetabolismBocage University HospitalDijonFrance
| | - Jamila Zammouri
- Sorbonne University, Inserm UMR_S 938, Saint–Antoine Research CentreCardiometabolism and Nutrition University Hospital Institute (ICAN)ParisFrance
- AP‐HP, Robert‐Debré University Hospital, Department of Paediatric Endocrinology, Diabetology and MetabolismUniversity of ParisParisFrance
| | - Corinne Vigouroux
- Endocrinology DepartmentAssistance Publique–Hôpitaux de Paris (AP‐HP), Saint–Antoine University Hospital, National Reference Centre for Rare Diseases of Insulin Secretion and Insulin Sensitivity (PRISIS)ParisFrance
- Sorbonne University, Inserm UMR_S 938, Saint–Antoine Research CentreCardiometabolism and Nutrition University Hospital Institute (ICAN)ParisFrance
| | - Camille Vatier
- Endocrinology DepartmentAssistance Publique–Hôpitaux de Paris (AP‐HP), Saint–Antoine University Hospital, National Reference Centre for Rare Diseases of Insulin Secretion and Insulin Sensitivity (PRISIS)ParisFrance
- Sorbonne University, Inserm UMR_S 938, Saint–Antoine Research CentreCardiometabolism and Nutrition University Hospital Institute (ICAN)ParisFrance
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Grolleau A, Dorchies F, Jourdain N, Ta Phuoc K, Gautier J, Mahieu B, Renaudin P, Recoules V, Martinez P, Lecherbourg L. Femtosecond Resolution of the Nonballistic Electron Energy Transport in Warm Dense Copper. Phys Rev Lett 2021; 127:275901. [PMID: 35061440 DOI: 10.1103/physrevlett.127.275901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 11/03/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
The ultrafast electron energy transport is investigated in laser-heated warm dense copper in a high flux regime (2.5±0.7×10^{13} W/cm^{2} absorbed). The dynamics of the electron temperature is retrieved from femtosecond time-resolved x-ray absorption near-edge spectroscopy near the Cu L3 edge. A characteristic time of ∼1 ps is observed for the increase in the average temperature in a 100 nm thick sample. Data are well reproduced by two-temperature hydrodynamic simulations, which support energy transport dominated by thermal conduction rather than ballistic electrons.
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Affiliation(s)
- A Grolleau
- CEA, DAM, DIF, F-91297 Arpajon, France
- Université Bordeaux, CNRS, CEA, CELIA, UMR 5107, F-33400 Talence, France
| | - F Dorchies
- Université Bordeaux, CNRS, CEA, CELIA, UMR 5107, F-33400 Talence, France
| | - N Jourdain
- CEA, DAM, DIF, F-91297 Arpajon, France
- Université Bordeaux, CNRS, CEA, CELIA, UMR 5107, F-33400 Talence, France
| | - K Ta Phuoc
- LOA, ENSTA, CNRS UMR 7639, Institut Polytechnique de Paris, F-91761 Palaiseau, France
| | - J Gautier
- LOA, ENSTA, CNRS UMR 7639, Institut Polytechnique de Paris, F-91761 Palaiseau, France
| | - B Mahieu
- LOA, ENSTA, CNRS UMR 7639, Institut Polytechnique de Paris, F-91761 Palaiseau, France
| | | | | | - P Martinez
- Université Bordeaux, CNRS, CEA, CELIA, UMR 5107, F-33400 Talence, France
| | - L Lecherbourg
- CEA, DAM, DIF, F-91297 Arpajon, France
- LOA, ENSTA, CNRS UMR 7639, Institut Polytechnique de Paris, F-91761 Palaiseau, France
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Rahota R, Salin A, Gautier J, Almeras C, Tollon C, Loison G, Beauval J, Ploussard G. Le programme de préhabilitation avant la prostatectomie totale robotique améliore indépendamment le récupération de la continence urinaire et les résultats péri-opératoires. Prog Urol 2021. [DOI: 10.1016/j.purol.2021.08.161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Smati S, Tramunt B, Wargny M, Caussy C, Gaborit B, Vatier C, Vergès B, Ancelle D, Amadou C, Bachir LA, Bourron O, Coffin‐Boutreux C, Barraud S, Dorange A, Fremy B, Gautier J, Germain N, Larger E, Laugier‐Robiolle S, Meyer L, Monier A, Moura I, Potier L, Sabbah N, Seret‐Bégué D, Winiszewski P, Pichelin M, Saulnier P, Hadjadj S, Cariou B, Gourdy P. Relationship between obesity and severe COVID-19 outcomes in patients with type 2 diabetes: Results from the CORONADO study. Diabetes Obes Metab 2021; 23:391-403. [PMID: 33051976 PMCID: PMC7675375 DOI: 10.1111/dom.14228] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 10/02/2020] [Accepted: 10/07/2020] [Indexed: 12/13/2022]
Abstract
AIM To assess the relationship between body mass index (BMI) classes and early COVID-19 prognosis in inpatients with type 2 diabetes (T2D). METHODS From the 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.
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Affiliation(s)
- Sarra Smati
- Département d'EndocrinologieDiabétologie et Nutrition, L'Institut du Thorax, INSERM, CNRS, University of Nantes, CHU NantesNantesFrance
| | - Blandine Tramunt
- Département d'Endocrinologie, Diabétologie et Nutrition, CHU Toulouse, Institut des Maladies Métaboliques et Cardiovasculaires, UMR1048 INSERM/UPSUniversité de ToulouseToulouseFrance
| | | | - Cyrielle Caussy
- University of Lyon, CarMen Laboratory, INSERM, INRA, INSA LyonUniversité Claude Bernard Lyon 1Pierre‐BéniteFrance
- Département Endocrinologie, Diabète et Nutrition, Hôpital Lyon SudHospices Civils de LyonPierre‐BéniteFrance
| | - Bénédicte Gaborit
- Département d'Endocrinologie et de DiabétologieHôpital Nord, Assistance Publique Hôpitaux de MarseilleMarseilleFrance
| | - Camille Vatier
- APHP, Hôpital Saint‐AntoineReference Center of Rare Diseases of Insulin Secretion and Insulin Sensitivity (PRISIS), Département d'EndocrinologieParisFrance
- Sorbonne UniversitéINSERM UMRS 938, Centre de Recherche Saint‐AntoineParisFrance
| | - Bruno Vergès
- Endocrinologie, DiabétologieCHU Dijon, Hôpital du BocageDijonFrance
| | - Deborah Ancelle
- Service de Diabétologie EndocrinologieCentre Hospitalier MonodLe HavreFrance
| | - Coralie Amadou
- Département de DiabétologieCentre Hospitalier Sud FrancilienCorbeil EssonneFrance
| | - Leila A. Bachir
- Département de DiabétologieHôpital Franco‐BritanniqueLevallois PerretFrance
| | - Olivier Bourron
- Sorbonne UniversitéParisFrance
- Assistance Publique‐Hôpitaux de Paris, Département de Diabétologie, CHU La Pitié Salpêtrière‐Charles Foix, INSERM, Centre de Recherche des CordeliersParisFrance
- Institute of Cardiometabolism and NutritionParisFrance
| | | | - Sara Barraud
- Département de DiabétologieCHU de ReimsReimsFrance
| | - Anne Dorange
- Département de DiabétologieEndocrinologie, Nutrition, CH Le MansLe MansFrance
| | | | - Jean‐François Gautier
- Département de Diabétologie et EndocrinologieHôpital Lariboisière, APHPParisFrance
- INSERM UMRS 1138Université́ Paris Diderot‐Paris VII, Sorbonne Paris CitéParisFrance
| | - Natacha Germain
- Service Endocrinologie CHU de Saint‐Etienne et Laboratoire TAPESaint‐EtienneFrance
| | - Etienne Larger
- Service de DiabétologieHôpital Cochin, APHP, Université de ParisParisFrance
| | | | - Laurent Meyer
- Département d'EndocrinologieDiabétologie et Nutrition, Hôpitaux Universitaires de StrasbourgStrasbourgFrance
| | - Arnaud Monier
- Département d'EndocrinologieDiabétologie, Nutrition, Centre Hospitalier Louis PasteurChartresFrance
| | - Isabelle Moura
- Unité Transversale de DiabétologieEndocrinologie, Nutrition, Centre Hospitalier d'AlbiAlbiFrance
| | - Louis Potier
- Département d'EndocrinologieDiabétologie et Nutrition, Hôpital Bichat, Assistance Publique‐Hôpitaux de Paris, Centre de Recherche des Cordeliers, INSERM, U‐1138, Université de ParisParisFrance
| | - Nadia Sabbah
- Département d'Endocrinologie et Maladies Métaboliques, André Rosemon, Hôpital de CayenneUniversité des Antilles et de la Guyane FrançaisePointe à PitreFrance
- EA3593, Amazon Ecosystems and Tropical DiseasesUniversité de GuyaneGuyane FrançaiseFrance
| | | | | | - Matthieu Pichelin
- Département d'EndocrinologieDiabétologie et Nutrition, L'Institut du Thorax, INSERM, CNRS, University of Nantes, CHU NantesNantesFrance
| | - Pierre‐Jean Saulnier
- Centre d'Investigation Clinique CIC 1402Université de Poitiers, INSERM, CHU de PoitiersPoitiersFrance
| | - Samy Hadjadj
- Département d'EndocrinologieDiabétologie et Nutrition, L'Institut du Thorax, INSERM, CNRS, University of Nantes, CHU NantesNantesFrance
| | - Bertrand Cariou
- Département d'EndocrinologieDiabétologie et Nutrition, L'Institut du Thorax, INSERM, CNRS, University of Nantes, CHU NantesNantesFrance
| | - Pierre Gourdy
- Département d'Endocrinologie, Diabétologie et Nutrition, CHU Toulouse, Institut des Maladies Métaboliques et Cardiovasculaires, UMR1048 INSERM/UPSUniversité de ToulouseToulouseFrance
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Pamart D, Otekpo M, Asfar M, Duval G, Gautier J, Annweiler C. Hypercalcemia as a Biomarker of Poor Prognosis in Frail Elderly Patients with COVID-19. J Nutr Health Aging 2021; 25:1140-1144. [PMID: 34866140 PMCID: PMC8527973 DOI: 10.1007/s12603-021-1690-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 05/18/2021] [Indexed: 11/28/2022]
Abstract
The objective of this cohort study was to determine whether hypercalcemia in early COVID-19 was associated with 3-month mortality in frail elderly patients. Circulating calcium and albumin concentrations at hospital admission and 3-month mortality were assessed in geriatric patients hospitalized for COVID-19 with normal-to-high calcium concentrations. Hypercalcemia was defined as corrected calcium >2.5mmol/L. Covariables were age, sex, functional abilities, malignancies, hypertension, cardiomyopathy, number of acute health issues, use antibiotics and respiratory treatments. In total, 94 participants (mean±SD 88.0±5.5years; 47.9% women; 22.3% hypercalcemia; 0% hypocalcemia) were included. Sixty-five participants who survived at 3months exhibited less often hypercalcemia at baseline than the others (13.9% versus 41.4%, P=0.003). Hypercalcemia was associated with 3-month mortality (fully-adjusted HR=3.03, P=0.009) with specificity=0.86 and sensitivity=0.41. Those with hypercalcemia had shorter survival time than those with normocalcemia (log-rank P=0.002). In conclusion, hypercalcemia was associated with poorer survival in hospitalized frail elderly COVID-19 patients.
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Affiliation(s)
- D Pamart
- Cédric Annweiler, MD, PhD, Department of Geriatric Medicine, Angers University Hospital, F-49933 Angers, France; E-mail: ; Phone: ++33 2 41 35 47 25; Fax: ++33 2 41 35 48 94
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Abstract
OBJECTIVES To identify contributive criteria in decision-making for intubation in acute epiglottitis, based on clinical and endoscopic data in adult patients, and to study clinical and biological characteristics and management. MATERIALS AND METHODS Diagnosis was established by flexible endoscopy showing epiglottic edema in association with general signs of sepsis in 28 patients consulting into two French hospitals between 2005 and 2016. Retrospective univariate and multivariate analysis between patients managed by intubation (Group I) or surveillance (Group S) was performed on clinical and endoscopic data. RESULTS Ten patients were intubated (36%). On univariate analysis, 4 variables were suggestively associated with intubation. On multivariate analysis, associations remained suggestive for dyspnea (OR=50.6; 95% CI=[2.7; 940.1]) and supraglottic edema extension (OR=42.2; 95% CI=[2.2; 799.5]). The area under the curve identifying intubated patients on these 2 criteria was 90.8%, testifying to high discrimination. CONCLUSION Intubation must always be considered in epiglottitis. Dyspnea and supraglottic extension of the edema seem to be the two main criteria to be considered in airway control decision-making.
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Affiliation(s)
- P M Pineau
- Service d'ORL et Chirurgie Cervico-Faciale, Centre Hospitalier Universitaire d'Angers, 4, Rue Larrey, 49100 Angers, France.
| | - J Gautier
- Pôle "Neurosciences, Vieillissement, Médecine et Société", Centre de Recherche sur l'Autonomie et la Longévité (CeRAL), Service de Gériatrie, Centre Hospitalier Universitaire d'Angers, 4 Rue Larrey, 49100 Angers, France
| | - A Pineau
- Service d'ORL et Chirurgie Cervico-Faciale, Centre Hospitalier du Mans, 194 Avenue Rubillard, 72037 Le Mans, France
| | - N Emam
- Service d'ORL et Chirurgie Cervico-Faciale, Centre Hospitalier du Mans, 194 Avenue Rubillard, 72037 Le Mans, France
| | - L Laccourreye
- Service d'ORL et Chirurgie Cervico-Faciale, Centre Hospitalier Universitaire d'Angers, 4, Rue Larrey, 49100 Angers, France
| | - S Boucher
- Service d'ORL et Chirurgie Cervico-Faciale, Centre Hospitalier Universitaire d'Angers, 4, Rue Larrey, 49100 Angers, France; Équipe MitoLab, UMR CNRS 6015, U1083 INSERM, Institut MitoVasc, SFR ICAT, Université d'Angers, Centre Hospitalier Universitaire d'Angers, Bâtiment IRIS/IBS, Rue des Capucins, 49933 Angers cedex 9, France
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Tuitje F, Martínez Gil P, Helk T, Gautier J, Tissandier F, Goddet JP, Guggenmos A, Kleineberg U, Sebban S, Oliva E, Spielmann C, Zürch M. Nonlinear ionization dynamics of hot dense plasma observed in a laser-plasma amplifier. Light Sci Appl 2020; 9:187. [PMID: 33298838 PMCID: PMC7673011 DOI: 10.1038/s41377-020-00424-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 10/15/2020] [Accepted: 10/26/2020] [Indexed: 06/12/2023]
Abstract
Understanding the behaviour of matter under conditions of extreme temperature, pressure, density and electromagnetic fields has profound effects on our understanding of cosmologic objects and the formation of the universe. Lacking direct access to such objects, our interpretation of observed data mainly relies on theoretical models. However, such models, which need to encompass nuclear physics, atomic physics and plasma physics over a huge dynamic range in the dimensions of energy and time, can only provide reliable information if we can benchmark them to experiments under well-defined laboratory conditions. Due to the plethora of effects occurring in this kind of highly excited matter, characterizing isolated dynamics or obtaining direct insight remains challenging. High-density plasmas are turbulent and opaque for radiation below the plasma frequency and allow only near-surface insight into ionization processes with visible wavelengths. Here, the output of a high-harmonic seeded laser-plasma amplifier using eight-fold ionized krypton as the gain medium operating at a 32.8 nm wavelength is ptychographically imaged. A complex-valued wavefront is observed in the extreme ultraviolet (XUV) beam with high resolution. Ab initio spatio-temporal Maxwell-Bloch simulations show excellent agreement with the experimental observations, revealing overionization of krypton in the plasma channel due to nonlinear laser-plasma interactions, successfully validating this four-dimensional multiscale model. This constitutes the first experimental observation of the laser ion abundance reshaping a laser-plasma amplifier. The presented approach shows the possibility of directly modelling light-plasma interactions in extreme conditions, such as those present during the early times of the universe, with direct experimental verification.
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Affiliation(s)
- F Tuitje
- Institute for Optics and Quantum Electronics, Abbe Center of Photonics, University of Jena, Jena, Germany.
- Helmholtz Institute Jena, Jena, Germany.
| | - P Martínez Gil
- Departamento de Ingeniería Energética and Instituto de Fusión Nuclear "Guillermo Velarde", ETSI Industriales, Universidad Politécnica de Madrid, Madrid, Spain
| | - T Helk
- Institute for Optics and Quantum Electronics, Abbe Center of Photonics, University of Jena, Jena, Germany
- Helmholtz Institute Jena, Jena, Germany
| | - J Gautier
- Laboratoire d'Optique Appliquée, ENSTA Paris, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, Palaiseau, France
| | - F Tissandier
- Laboratoire d'Optique Appliquée, ENSTA Paris, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, Palaiseau, France
| | - J-P Goddet
- Laboratoire d'Optique Appliquée, ENSTA Paris, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, Palaiseau, France
| | - A Guggenmos
- Department for Physics, Ludwig-Maximilian-University Munich, Garching, Germany
- UltraFast Innovations GmbH, Garching, Germany
| | - U Kleineberg
- Department for Physics, Ludwig-Maximilian-University Munich, Garching, Germany
| | - S Sebban
- Laboratoire d'Optique Appliquée, ENSTA Paris, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, Palaiseau, France
| | - E Oliva
- Departamento de Ingeniería Energética and Instituto de Fusión Nuclear "Guillermo Velarde", ETSI Industriales, Universidad Politécnica de Madrid, Madrid, Spain.
| | - C Spielmann
- Institute for Optics and Quantum Electronics, Abbe Center of Photonics, University of Jena, Jena, Germany
- Helmholtz Institute Jena, Jena, Germany
| | - M Zürch
- Institute for Optics and Quantum Electronics, Abbe Center of Photonics, University of Jena, Jena, Germany.
- Helmholtz Institute Jena, Jena, Germany.
- Fritz Haber Institute of the Max Planck Society, Berlin, Germany.
- Department of Chemistry, University of California at Berkeley, Berkeley, CA, USA.
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
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8
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Bajeot A, Lesourd M, Manceau C, Fiard G, Albisinni S, Salin A, Loison G, Doumerc N, Thoulouzan M, Tollon C, Almeras C, Gautier J, Roumeguere T, Soulié M, Beauval J, Diamand R, Ploussard G, Roumiguié M. Quelle est la valeur ajoutée des biopsies guidées par l’IRM dans la sélection des patients candidats au traitement focal ? Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Ploussard G, Pradere B, Beauval J, Chevreau C, Almeras C, Suc E, Gautier J, Laurenty A, Roumiguié M, Loison G, Tollon C, Mourey L, Salin A, Xylinas E, Pouessel D. Résultats oncologiques des patients ayant des ganglions lymphatiques positifs au moment de la cystectomie radicale avec ou sans chimiothérapie néoadjuvante. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Ploussard G, Rahota R, Beauval J, Salin A, Almeras C, Loison G, Tollon C, Gautier J. Caractéristiques pathologiques des lésions IRM PI-RADS 3 en biopsie (systématique et ciblée) et sur pièces de prostatectomie totale. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Ploussard G, Beauval J, Salin A, Almeras C, Loison G, Gautier J, Tollon C. Impact sur les résultats et les coûts de la mise en œuvre de la cystectomie radicale robotique avec dérivation intracorporelle complète à l’ère de la RAAC. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Manceau C, Lesourd M, Beauval J, Almeras C, Aziza R, Gautier J, Loison G, Salin A, Tollon C, Soulié M, Malavaud B, Roumiguie M, Ploussard G. Les caractéristiques de l’IRM prédisent avec précision la récidive biochimique après une prostatectomie totale. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Alzaid F, Julla J, Diedisheim M, Potier C, Potier L, Velho G, Gaborit B, Manivet P, Germain S, Vidal‐Trecan T, Roussel R, Riveline J, Dalmas E, Venteclef N, Gautier J. Monocytopenia, monocyte morphological anomalies and hyperinflammation characterise severe COVID-19 in type 2 diabetes. EMBO Mol Med 2020; 12:e13038. [PMID: 32816392 PMCID: PMC7461002 DOI: 10.15252/emmm.202013038] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/17/2020] [Accepted: 08/19/2020] [Indexed: 12/16/2022] Open
Abstract
Early in the COVID-19 pandemic, type 2 diabetes (T2D) was marked as a risk factor for severe disease and mortality. Inflammation is central to the aetiology of both conditions where variations in immune responses can mitigate or aggravate disease course. Identifying at-risk groups based on immunoinflammatory signatures is valuable in directing personalised care and developing potential targets for precision therapy. This observational study characterised immunophenotypic variation associated with COVID-19 severity in T2D. Broad-spectrum immunophenotyping quantified 15 leucocyte populations in peripheral circulation from a cohort of 45 hospitalised COVID-19 patients with and without T2D. Lymphocytopenia and specific loss of cytotoxic CD8+ lymphocytes were associated with severe COVID-19 and requirement for intensive care in both non-diabetic and T2D patients. A morphological anomaly of increased monocyte size and monocytopenia restricted to classical CD14Hi CD16- monocytes was specifically associated with severe COVID-19 in patients with T2D requiring intensive care. Increased expression of inflammatory markers reminiscent of the type 1 interferon pathway (IL6, IL8, CCL2, INFB1) underlaid the immunophenotype associated with T2D. These immunophenotypic and hyperinflammatory changes may contribute to increased voracity of COVID-19 in T2D. These findings allow precise identification of T2D patients with severe COVID-19 as well as provide evidence that the type 1 interferon pathway may be an actionable therapeutic target for future studies.
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Affiliation(s)
- Fawaz Alzaid
- Cordeliers Research CentreINSERMIMMEDIAB LaboratorySorbonne UniversitéUniversité de ParisParisFrance
| | - Jean‐Baptiste Julla
- Cordeliers Research CentreINSERMIMMEDIAB LaboratorySorbonne UniversitéUniversité de ParisParisFrance
- Department of DiabetesClinical Investigation Centre (CIC‐9504)Lariboisière HospitalAssistance Publique – Hôpitaux de ParisParisFrance
| | - Marc Diedisheim
- Cordeliers Research CentreINSERMIMMEDIAB LaboratorySorbonne UniversitéUniversité de ParisParisFrance
- Department of DiabetologyCochin HospitalAssistance Publique Hôpitaux de ParisUniversité de ParisParisFrance
| | - Charline Potier
- Cordeliers Research CentreINSERMIMMEDIAB LaboratorySorbonne UniversitéUniversité de ParisParisFrance
| | - Louis Potier
- Cordeliers Research CentreINSERMIMMEDIAB LaboratorySorbonne UniversitéUniversité de ParisParisFrance
- Department of Diabetology, Endocrinology and NutritionBichat HospitalAssistance Publique ‐ Hôpitaux de ParisParisFrance
| | - Gilberto Velho
- Cordeliers Research CentreINSERMIMMEDIAB LaboratorySorbonne UniversitéUniversité de ParisParisFrance
| | | | - Philippe Manivet
- Endocrinology, Metabolic Diseases and Nutrition DepartmentAssistance Publique Hôpitaux de MarseilleMarseilleFrance
- Centre de Ressources Biologique “biobank Lariboisière”BB‐0033-00064APHPNordUniversité de ParisParis DiderotHôpital LariboisièreParisFrance
| | - Stéphane Germain
- Center for Interdisciplinary Research in Biology (CIRB)College de France – Centre National de la Recherche Scientifique (CNRS)Institut National de la Santé et de la Recherche Médicale (INSERM)Paris Sciences et Lettres (PSL) Research UniversityParisFrance
| | - Tiphaine Vidal‐Trecan
- Department of DiabetesClinical Investigation Centre (CIC‐9504)Lariboisière HospitalAssistance Publique – Hôpitaux de ParisParisFrance
| | - Ronan Roussel
- Cordeliers Research CentreINSERMIMMEDIAB LaboratorySorbonne UniversitéUniversité de ParisParisFrance
- Department of Diabetology, Endocrinology and NutritionBichat HospitalAssistance Publique ‐ Hôpitaux de ParisParisFrance
| | - Jean‐Pierre Riveline
- Cordeliers Research CentreINSERMIMMEDIAB LaboratorySorbonne UniversitéUniversité de ParisParisFrance
- Department of DiabetesClinical Investigation Centre (CIC‐9504)Lariboisière HospitalAssistance Publique – Hôpitaux de ParisParisFrance
| | - Elise Dalmas
- Cordeliers Research CentreINSERMIMMEDIAB LaboratorySorbonne UniversitéUniversité de ParisParisFrance
| | - Nicolas Venteclef
- Cordeliers Research CentreINSERMIMMEDIAB LaboratorySorbonne UniversitéUniversité de ParisParisFrance
| | - Jean‐François Gautier
- Cordeliers Research CentreINSERMIMMEDIAB LaboratorySorbonne UniversitéUniversité de ParisParisFrance
- Department of DiabetesClinical Investigation Centre (CIC‐9504)Lariboisière HospitalAssistance Publique – Hôpitaux de ParisParisFrance
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Affiliation(s)
- Jean‐François Gautier
- Department of Diabetes and EndocrinologyLariboisière HospitalAssistance Publique‐Hôpitaux de ParisUniversité de ParisParisFrance
- INSERM UMRS 1138Centre de Recherches des CordeliersParisFrance
| | - Yann Ravussin
- Department of EndocrinologyMetabolism & Cardiovascular SystemFaculty of Science & MedicineUniversity of FribourgFribourgSwitzerland
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15
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Tissandier F, Gautier J, Goddet JP, Kabacinski A, Sebban S, Nejdl J, Kozlová M, Maynard G. Two-Color Soft X-Ray Lasing in a High-Density Nickel-like Krypton Plasma. Phys Rev Lett 2020; 124:133902. [PMID: 32302194 DOI: 10.1103/physrevlett.124.133902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/25/2020] [Accepted: 03/12/2020] [Indexed: 06/11/2023]
Abstract
We report evidence of strong lasing on the 4p-4s transition at 62.7 nm in nickel-like krypton occurring simultaneously with the usual 4d-4p lasing at 32.8 nm. The gain dynamics of both transitions were experimentally and numerically investigated and found comparable. The two-color amplifier was seeded by the same harmonic pulse, therefore producing a short-duration coherent two-color soft x-ray laser pulse. Both transitions offer similar prospects of pulse energy and duration and could lead to the delivery of intense and ultrashort two-color coherent soft x-ray pulses with a controllable delay.
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Affiliation(s)
- F Tissandier
- Laboratoire d'Optique Appliquée, ENSTA Paris, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, 828 Boulevard des Maréchaux, F-91761 Palaiseau cedex, France
| | - J Gautier
- Laboratoire d'Optique Appliquée, ENSTA Paris, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, 828 Boulevard des Maréchaux, F-91761 Palaiseau cedex, France
| | - J-P Goddet
- Laboratoire d'Optique Appliquée, ENSTA Paris, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, 828 Boulevard des Maréchaux, F-91761 Palaiseau cedex, France
| | - A Kabacinski
- Laboratoire d'Optique Appliquée, ENSTA Paris, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, 828 Boulevard des Maréchaux, F-91761 Palaiseau cedex, France
| | - S Sebban
- Laboratoire d'Optique Appliquée, ENSTA Paris, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, 828 Boulevard des Maréchaux, F-91761 Palaiseau cedex, France
| | - J Nejdl
- ELI-Beamlines project, Institute of Physics of the Czech Academy of Science, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - M Kozlová
- ELI-Beamlines project, Institute of Physics of the Czech Academy of Science, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - G Maynard
- Laboratoire de Physique des Gaz et des Plasmas, Université Paris Sud, CNRS, Université Paris Saclay, F-91405 Orsay Cedex, France
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16
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Petrovic J, Canaud B, Kendzia D, Apel C, Busink E, Gautier J, Böger S. SAT-223 ARE CURRENT REIMBURSEMENT SCHEMES PREVENTING MORE PATIENTS GOING HOME? Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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17
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Ghaith A, Oumbarek D, Roussel E, Corde S, Labat M, André T, Loulergue A, Andriyash IA, Chubar O, Kononenko O, Smartsev S, Marcouillé O, Kitégi C, Marteau F, Valléau M, Thaury C, Gautier J, Sebban S, Tafzi A, Blache F, Briquez F, Tavakoli K, Carcy A, Bouvet F, Dietrich Y, Lambert G, Hubert N, El Ajjouri M, Polack F, Dennetière D, Leclercq N, Rommeluère P, Duval JP, Sebdaoui M, Bourgoin C, Lestrade A, Benabderrahmane C, Vétéran J, Berteaud P, De Oliveira C, Goddet JP, Herbeaux C, Szwaj C, Bielawski S, Malka V, Couprie ME. Tunable High Spatio-Spectral Purity Undulator Radiation from a Transported Laser Plasma Accelerated Electron Beam. Sci Rep 2019; 9:19020. [PMID: 31836730 PMCID: PMC6910930 DOI: 10.1038/s41598-019-55209-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 10/22/2019] [Indexed: 02/01/2023] Open
Abstract
Undulator based synchrotron light sources and Free Electron Lasers (FELs) are valuable modern probes of matter with high temporal and spatial resolution. Laser Plasma Accelerators (LPAs), delivering GeV electron beams in few centimeters, are good candidates for future compact light sources. However the barriers set by the large energy spread, divergence and shot-to-shot fluctuations require a specific transport line, to shape the electron beam phase space for achieving ultrashort undulator synchrotron radiation suitable for users and even for achieving FEL amplification. Proof-of-principle LPA based undulator emission, with strong electron focusing or transport, does not yet exhibit the full specific radiation properties. We report on the generation of undulator radiation with an LPA beam based manipulation in a dedicated transport line with versatile properties. After evidencing the specific spatio-spectral signature, we tune the resonant wavelength within 200-300 nm by modification of the electron beam energy and the undulator field. We achieve a wavelength stability of 2.6%. We demonstrate that we can control the spatio-spectral purity and spectral brightness by reducing the energy range inside the chicane. We have also observed the second harmonic emission of the undulator.
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Affiliation(s)
- A Ghaith
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France. .,Université Paris-Saclay, Paris, France.
| | - D Oumbarek
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France.,Université Paris-Saclay, Paris, France
| | - E Roussel
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, 59000, Lille, France
| | - S Corde
- LOA, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91762, Palaiseau Cedex, France
| | - M Labat
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - T André
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France.,Université Paris-Saclay, Paris, France
| | - A Loulergue
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - I A Andriyash
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 761001, Israel
| | - O Chubar
- NSLS-II, Brookhaven National Laboratory, 98 Rochester St, Upton, NY, 11973, USA
| | - O Kononenko
- LOA, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91762, Palaiseau Cedex, France
| | - S Smartsev
- LOA, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91762, Palaiseau Cedex, France.,Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 761001, Israel
| | - O Marcouillé
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - C Kitégi
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - F Marteau
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - M Valléau
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - C Thaury
- LOA, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91762, Palaiseau Cedex, France
| | - J Gautier
- LOA, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91762, Palaiseau Cedex, France
| | - S Sebban
- LOA, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91762, Palaiseau Cedex, France
| | - A Tafzi
- LOA, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91762, Palaiseau Cedex, France
| | - F Blache
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - F Briquez
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - K Tavakoli
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - A Carcy
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - F Bouvet
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - Y Dietrich
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - G Lambert
- LOA, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91762, Palaiseau Cedex, France
| | - N Hubert
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - M El Ajjouri
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - F Polack
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - D Dennetière
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - N Leclercq
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - P Rommeluère
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - J-P Duval
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - M Sebdaoui
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - C Bourgoin
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - A Lestrade
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - C Benabderrahmane
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - J Vétéran
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - P Berteaud
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - C De Oliveira
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - J P Goddet
- LOA, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91762, Palaiseau Cedex, France
| | - C Herbeaux
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France
| | - C Szwaj
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, 59000, Lille, France
| | - S Bielawski
- Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, 59000, Lille, France
| | - V Malka
- LOA, ENSTA Paris, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 828 Bd des Maréchaux, 91762, Palaiseau Cedex, France.,Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 761001, Israel
| | - M-E Couprie
- Synchrotron-SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette, 91192, France.,Université Paris-Saclay, Paris, France
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18
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Ploussard G, Beauval J, Salin A, Loison G, Almeras C, Gautier J, Tollon C. Récupération rapide après chirurgie, hyperpréparation et ambulatoire : retour sur 5 années d’expérience autour de la prostatectomie totale robot-assistée. Prog Urol 2019. [DOI: 10.1016/j.purol.2019.08.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Manceau C, Ploussard G, Beauval J, Almeras C, Aziza R, Gautier J, Loison G, Portalez D, Salin A, Tollon C, Soulie M, Malavaud B, Lesourd M, Roumiguie M. Patients éligibles à la surveillance active présentant une IRM positive avec un adénocarcinome prostatique ISUP 2: étude anatomopathologique. Prog Urol 2019. [DOI: 10.1016/j.purol.2019.08.215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Thomas S, Reynolds D, Morrall MCHJ, Limond J, Chevignard M, Calaminus G, Poggi G, Bennett E, Frappaz D, Slade D, Gautier J, McQuilton P, Massimino M, Grundy R. The European Society of Paediatric Oncology Ependymoma-II program Core-Plus model: Development and initial implementation of a cognitive test protocol for an international brain tumour trial. Eur J Paediatr Neurol 2019; 23:560-570. [PMID: 31182404 DOI: 10.1016/j.ejpn.2019.05.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 11/24/2022]
Abstract
It is increasingly accepted that survival alone is an inadequate measure of the success of childhood brain tumour treatments. Consequently, there is growing emphasis on capturing quality of survival. Ependymomas are the third most frequently occurring brain tumours in childhood and present significant clinical challenges. European Society of Paediatric Oncology Ependymoma II is a comprehensive international program aiming to evaluate outcomes under different treatment regimens and improve diagnostic accuracy. Importantly, there has been agreement to lower the age at which children with posterior fossa ependymoma undergo focal irradiation from three years to either eighteen months or one year of age. Hitherto radiotherapy in Europe had been reserved for children over three years due to concerns over adverse cognitive outcomes following irradiation of the developing brain. There is therefore a duty of care to include longitudinal cognitive follow-up and this has been agreed as an essential trial outcome. Discussions between representatives of 18 participating European countries over 10 years have yielded European consensus for an internationally accepted test battery for follow-up of childhood ependymoma survivors. The 'Core-Plus' model incorporates a two-tier approach to assessment by specifying core tests to establish a minimum dataset where resources are limited, whilst maintaining scope for comprehensive assessment where feasible. The challenges leading to the development of the Core-Plus model are presented alongside learning from the initial stages of the trial. We propose that this model could provide a solution for future international trials addressing both childhood brain tumours and other conditions associated with cognitive morbidity.
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Affiliation(s)
- S Thomas
- Department of Paediatric Neuropsychology, Nottingham Children's Hospital, Queen's Medical Centre, Nottingham, NG7 2UH, UK; Child Brain Tumour Research Centre, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK.
| | - D Reynolds
- Department of Paediatric Neuropsychology, Nottingham Children's Hospital, Queen's Medical Centre, Nottingham, NG7 2UH, UK; Child Brain Tumour Research Centre, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - M C H J Morrall
- Department of Paediatric Neuropsychology, Leeds General Infirmary, Leeds, LS1 3EX, UK
| | - J Limond
- Psychology, College of Life and Environmental Sciences, Washington Singer Laboratories, University of Exeter, Perry Road, EX4 4QG, UK
| | - M Chevignard
- Rehabilitation Department for Children with Acquired Neurological Injury, Saint Maurice Hospitals, 14, rue du Val d'Osne, 94410, Saint Maurice, France; Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, 75006 Paris, France
| | - G Calaminus
- University Children's Hospital Bonn, Adenauerallee 119, 53113, Bonn, Germany
| | - G Poggi
- Neuro-Oncological Rehabilitation Unit- IRCCS E. Medea, Bosisio Parini, Lecco, Italy
| | - E Bennett
- Department of Paediatric Neuropsychology, Nottingham Children's Hospital, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - D Frappaz
- Institut d'Hématologie Oncologie pédiatrique, Lyon, France
| | - D Slade
- Cancer Research UK Clinical Trials Unit (CRCTU), Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - J Gautier
- Institut d'Hématologie Oncologie pédiatrique, Lyon, France
| | - P McQuilton
- Department of Paediatric Neuropsychology, Nottingham Children's Hospital, Queen's Medical Centre, Nottingham, NG7 2UH, UK; Child Brain Tumour Research Centre, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - M Massimino
- Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - R Grundy
- Child Brain Tumour Research Centre, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK
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Hort O, Albrecht M, Nefedova VE, Finke O, Mai DD, Reyné S, Giambruno F, Frassetto F, Poletto L, Andreasson J, Gautier J, Sebban S, Nejdl J. High-flux source of coherent XUV pulses for user applications. Opt Express 2019; 27:8871-8883. [PMID: 31052698 DOI: 10.1364/oe.27.008871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 12/31/2018] [Indexed: 06/09/2023]
Abstract
We present experimental results obtained at a user-oriented XUV beamline implemented at the ELI Beamlines facility. The coherent XUV radiation is produced via high harmonic generation in gases in a loose focusing geometry. The beamline is designed to be driven by 1 kHz, 100 mJ, 20 fs pulses centered at a wavelength of 830 nm. Results such as XUV spectra, beam wavefront and pulse energy obtained during the beamline commissioning with a commercial 1 kHz, 5 mJ, 40 fs laser system are presented. A unique XUV spectrometer for source characterization designed to reach a very high sensitivity is described in detail, and we demonstrate a novel technique for single-shot and every-shot XUV pulse energy measurement.
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Aigrain P, Bois B, Brugiere F, Duchene E, de Cortazar-Atauri I, Gautier J, Giraud-Heraud E, Hammond R, Hannin H, Ollat N, Touzard J. L'utilisation par la viticulture française d'un exercice de prospective pour l'élaboration d'une stratégie d'adaptation au changement climatique. BIO Web Conf 2019. [DOI: 10.1051/bioconf/20191203020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Foresight studies are regularly conducted at sectoral or geographical scales, in order to help policy makers and economic actors to define their strategy of adaptation to climate change (CC).
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Gautier J, Humbert F, Wolikow S. Histoire et évolution des appellations d'origine françaises. BIO Web Conf 2019. [DOI: 10.1051/bioconf/20191503013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
During the 20th century, wine appellations of origin have largely developed to represent a significant part of the wine production of some countries, especially in Europe. The globalization of the production, trade and consumption of wine is a major fact of the 21st century economy. The question of appellations of origin and more generally geographical indications must be asked: Is it a survival 100 years after the first law on appellations of origin was adopted in France? Historical knowledge makes it possible to understand how law, both national and international, has been marked by major developments in this area. Regulations on the origin of products have undergone significant changes over the last century, extending well beyond the wine and spirits sector to cover many other sectors. In addition, international institutions are very involved in the development of this concept, be it the FAO in order to protect and sustainably develop agricultural products from emerging countries or whether it is WIPO or WTO in order to implement protection of signs of origin in the context of intellectual property. Since its creation in 1924 the OIV has been largely attentive to the issue of appellations of origin, in their different forms, (AOP, AOC) and according to the country. It continues to play an important role in reflecting and thinking about the role of legal norms in the globalized wine economy and international trade. A symposium organized in Dijon in May 2019, has commemorated and evoked the centenary of the concept of the appellation of origin in France, bringing together speakers from several disciplines, including historians and jurists, on this theme of the appellation of 'origin. The proposed communication present the main orientations identified during this conference, and in particular the strengths and weaknesses of this concept vis-à-vis the theme of international protection.
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Almeras C, Estrade V, Gautier J, Hoznek A, Abid N, Meria P. Évaluation économique comparative des nouveaux dispositifs d’extraction des endoprothèses urétérales sous anesthésie locale. Prog Urol 2018. [DOI: 10.1016/j.purol.2018.07.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Gencay M, Seffner A, Pabinger S, Gautier J, Gohl P, Weizenegger M, Neofytos D, Batrla R, Woeste A, Kim HS, Westergaard G, Reinsch C, Brill E, Thuy PTT, Hoang BH, Sonderup M, Spearman CW, Brancaccio G, Fasano M, Gaeta GB, Santantonio T, Kaminski WE. Detection of in vivo hepatitis B virus surface antigen mutations-A comparison of four routine screening assays. J Viral Hepat 2018; 25:1132-1138. [PMID: 29660206 DOI: 10.1111/jvh.12915] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 03/25/2018] [Indexed: 12/12/2022]
Abstract
An important requirement for a state-of-the-art hepatitis B surface antigen (HBsAg) screening assay is reliable detection of mutated HBsAg. Currently, there is a striking shortage of data regarding the detection rates of in vivo HBsAg mutations for these clinically important assays. Therefore, we compared the detection rates of four commercial HBsAg screening assays using a global cohort of 1553 patients from four continents with known HBV genotypes. These samples, which represent the broadest spectrum of known and novel HBsAg major hydrophilic region (MHR) mutations to date, were analyzed for the presence of HBsAg using the Roche Elecsys® HBsAg II Qualitative, Siemens ADVIA Centaur XP HBsAg II, Abbott Architect HBsAg Qualitative II and DiaSorin Liaison® HBsAg Qualitative assays, respectively. Of the 1553 samples, 1391 samples could be sequenced; of these, 1013 (72.8%) carried at least one of the 345 currently known amino acid substitutions (distinct HBsAg mutation) in the HBsAg MHR. All 1553 patient samples were positive for HBsAg using the Elecsys® HBsAg II Qual assay, with a sensitivity (95% confidence interval) of 99.94% (99.64%-100%), followed by the Abbott Architect 99.81% (99.44%-99.96%), Siemens ADVIA 99.81% (99.44%-99.96%) and DiaSorin Liaison® 99.36% (98.82%-99.69%) assays, respectively. Our results indicate that the Elecsys® HBsAg II Qual assay exhibits the highest sensitivity among the commercial HBsAg screening assays, and demonstrate that its capacity to detect HBV infection is not compromised by HBsAg MHR mutants.
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Affiliation(s)
- M Gencay
- Roche Diagnostics International Ltd, Rotkreuz, Switzerland
| | - A Seffner
- Department of Molecular Genetics and Microbiology, MVZ Labor Dr. Limbach & Kollegen GbR, Heidelberg, Germany
| | - S Pabinger
- Health and Environment Department, Molecular Diagnostics, Austrian Institute of Technology, Vienna, Austria
| | - J Gautier
- Cerba Spécimen Services, Saint-Ouen l'Aumône, France
| | - P Gohl
- Bioscientia, Institute for Medical Diagnostics GmbH, Ingelheim, Germany
| | - M Weizenegger
- Department of Molecular Genetics and Microbiology, MVZ Labor Dr. Limbach & Kollegen GbR, Heidelberg, Germany
| | - D Neofytos
- Roche Diagnostics International Ltd, Rotkreuz, Switzerland
| | - R Batrla
- Roche Diagnostics International Ltd, Rotkreuz, Switzerland
| | - A Woeste
- Roche Diagnostics GmbH, Penzberg, Germany
| | - H S Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea
| | - G Westergaard
- Roche Diagnostics International Ltd, Rotkreuz, Switzerland
| | - C Reinsch
- Roche Diagnostics GmbH, Mannheim, Germany
| | - E Brill
- Bioscientia, Institute for Medical Diagnostics GmbH, Ingelheim, Germany
| | - P T T Thuy
- Hepatology Department, Medic Medical Center, Ho Chi Minh City, Vietnam
| | - B H Hoang
- Gastroenterology Department, Ho Chi Minh City University Medical Center, Ho Chi Minh City, Vietnam
| | - M Sonderup
- Division of Hepatology and Department of Medicine, University of Cape Town and Groote Schuur Hospital, Cape Town, South Africa
| | - C W Spearman
- Division of Hepatology and Department of Medicine, University of Cape Town and Groote Schuur Hospital, Cape Town, South Africa
| | - G Brancaccio
- Infectious Diseases and Viral Hepatitis Unit, University of Campania Luigi Vanvitelli, Naples, Italy
| | - M Fasano
- Infectious Diseases Unit, Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - G B Gaeta
- Infectious Diseases and Viral Hepatitis Unit, University of Campania Luigi Vanvitelli, Naples, Italy
| | - T Santantonio
- Infectious Diseases Unit, Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - W E Kaminski
- Bioscientia, Institute for Medical Diagnostics GmbH, Ingelheim, Germany
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Almeras C, Loison G, Tollon C, Gautier J, Sabatier R, Zanoun L, Cid E, Brudo L. Évaluation du coût en structure privée d’une ablation de sonde double J en externe à l’aide d’un fibroscope re-stérilisable. Prog Urol 2017. [DOI: 10.1016/j.purol.2017.07.235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Duval GT, Paré PY, Gautier J, Walrand S, Dinomais M, Annweiler C. Vitamin D and the Mechanisms, Circumstances and Consequences of Falls in Older Adults: A Case-Control Study. J Nutr Health Aging 2017; 21:1307-1313. [PMID: 29188894 DOI: 10.1007/s12603-016-0857-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To determine i) whether cases of elderly fallers had lower serum 25-hydroxyvitamin D (25OHD) concentration than controls without history of falls; and ii) whether serum 25OHD concentration was associated with specific mechanisms, circumstances and consequences of falls. DESIGN Case-control study with a 1:2 ratio. SETTING Geriatric ward of the University Hospital of Angers, France, between February 2012 and March 2014. PARTICIPANTS 216 inpatients (72 cases and 144 age- and gender-matched controls). MEASUREMENT Falls were defined as involuntary events causing the person to the ground or other lower level. The main mechanisms, circumstances and consequences of falls were identified using standardized questionnaires. Vitamin D deficiency was defined as serum 25OHD concentration ≤25nmol/L. Age, gender, body mass index, polypharmacy, use antihypertensive drugs, use psychoactive drugs, disability, cognitive performance, serum concentrations of parathyroid hormone, creatinine and albumin, and season of evaluation were used as potential confounders. RESULTS 216 participants (72 cases and 144 controls) were included in the study. There was no between-group difference in the prevalence of vitamin D deficiency (P=0.176). After adjusting for confounding factors, vitamin D deficiency was positively associated with falls (OR=4.03, P=0.014). Finally, the fallers with vitamin D deficiency exhibited more often orthostatic hypotension (68.8% against 33.3%, P=0.039) and a history of recurrent falls (85% against 50%, P=0.002) than those without vitamin D deficiency. CONCLUSION This case-control study reported that vitamin D deficiency was associated with falls in older inpatients. There was a greater prevalence of orthostatic hypotension and of the reccurrence of falls among fallers with vitamin D deficiency, suggesting that vitamin D may influence the conditions predisposing to falls rather than the fall by itself.
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Affiliation(s)
- G T Duval
- Cédric Annweiler, MD, PhD, Division of Geriatric Medicine, Angers University Hospital, F-49933 Angers Cedex 9, France; E-mail: ; Phone: ++33 2 41 35 54 86; Fax: ++33 2 41 35 48 94
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Colin A, Bonnemay L, Gayrard C, Gautier J, Gueroui Z. Triggering signaling pathways using F-actin self-organization. Sci Rep 2016; 6:34657. [PMID: 27698406 PMCID: PMC5048156 DOI: 10.1038/srep34657] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 09/16/2016] [Indexed: 12/20/2022] Open
Abstract
The spatiotemporal organization of proteins within cells is essential for cell fate behavior. Although it is known that the cytoskeleton is vital for numerous cellular functions, it remains unclear how cytoskeletal activity can shape and control signaling pathways in space and time throughout the cell cytoplasm. Here we show that F-actin self-organization can trigger signaling pathways by engineering two novel properties of the microfilament self-organization: (1) the confinement of signaling proteins and (2) their scaffolding along actin polymers. Using in vitro reconstitutions of cellular functions, we found that both the confinement of nanoparticle-based signaling platforms powered by F-actin contractility and the scaffolding of engineered signaling proteins along actin microfilaments can drive a signaling switch. Using Ran-dependent microtubule nucleation, we found that F-actin dynamics promotes the robust assembly of microtubules. Our in vitro assay is a first step towards the development of novel bottom-up strategies to decipher the interplay between cytoskeleton spatial organization and signaling pathway activity.
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Affiliation(s)
- A. Colin
- Ecole Normale Supérieure, Department of Chemistry PSL Research University-CNRS-ENS-UPMC 24, rue Lhomond, 75005, Paris, France
| | - L. Bonnemay
- Ecole Normale Supérieure, Department of Chemistry PSL Research University-CNRS-ENS-UPMC 24, rue Lhomond, 75005, Paris, France
| | - C. Gayrard
- Ecole Normale Supérieure, Department of Chemistry PSL Research University-CNRS-ENS-UPMC 24, rue Lhomond, 75005, Paris, France
| | - J. Gautier
- Ecole Normale Supérieure, Department of Chemistry PSL Research University-CNRS-ENS-UPMC 24, rue Lhomond, 75005, Paris, France
| | - Z. Gueroui
- Ecole Normale Supérieure, Department of Chemistry PSL Research University-CNRS-ENS-UPMC 24, rue Lhomond, 75005, Paris, France
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Döpp A, Guillaume E, Thaury C, Gautier J, Ta Phuoc K, Malka V. 3D printing of gas jet nozzles for laser-plasma accelerators. Rev Sci Instrum 2016; 87:073505. [PMID: 27475557 DOI: 10.1063/1.4958649] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Recent results on laser wakefield acceleration in tailored plasma channels have underlined the importance of controlling the density profile of the gas target. In particular, it was reported that the appropriate density tailoring can result in improved injection, acceleration, and collimation of laser-accelerated electron beams. To achieve such profiles, innovative target designs are required. For this purpose, we have reviewed the usage of additive layer manufacturing, commonly known as 3D printing, in order to produce gas jet nozzles. Notably we have compared the performance of two industry standard techniques, namely, selective laser sintering (SLS) and stereolithography (SLA). Furthermore we have used the common fused deposition modeling to reproduce basic gas jet designs and used SLA and SLS for more sophisticated nozzle designs. The nozzles are characterized interferometrically and used for electron acceleration experiments with the Salle Jaune terawatt laser at Laboratoire d'Optique Appliquée.
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Affiliation(s)
- A Döpp
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - E Guillaume
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - C Thaury
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - J Gautier
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - K Ta Phuoc
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - V Malka
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
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Thaury C, Guillaume E, Lifschitz A, Ta Phuoc K, Hansson M, Grittani G, Gautier J, Goddet JP, Tafzi A, Lundh O, Malka V. Shock assisted ionization injection in laser-plasma accelerators. Sci Rep 2015; 5:16310. [PMID: 26549584 PMCID: PMC4637871 DOI: 10.1038/srep16310] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 10/12/2015] [Indexed: 11/18/2022] Open
Abstract
Ionization injection is a simple and efficient method to trap an electron beam in a laser plasma accelerator. Yet, because of a long injection length, this injection technique leads generally to the production of large energy spread electron beams. Here, we propose to use a shock front transition to localize the injection. Experimental results show that the energy spread can be reduced down to 10 MeV and that the beam energy can be tuned by varying the position of the shock. This simple technique leads to very stable and reliable injection even for modest laser energy. It should therefore become a unique tool for the development of laser-plasma accelerators.
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Affiliation(s)
- C Thaury
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 bd des Maréchaux, 91762 Palaiseau France
| | - E Guillaume
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 bd des Maréchaux, 91762 Palaiseau France
| | - A Lifschitz
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 bd des Maréchaux, 91762 Palaiseau France
| | - K Ta Phuoc
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 bd des Maréchaux, 91762 Palaiseau France
| | - M Hansson
- Department of Physics, Lund University, P. O. Box 118, S-22100 Lund, Sweden
| | - G Grittani
- Institute of Physics ASCR, v.v.i. (FZU), ELI Beamlines project, Na Slovance 2, 18221 Prague, Czech Republic.,Czech Technical University in Prague, FNSPE, Brehova 7, 11519 Prague, Czech Republic
| | - J Gautier
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 bd des Maréchaux, 91762 Palaiseau France
| | - J-P Goddet
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 bd des Maréchaux, 91762 Palaiseau France
| | - A Tafzi
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 bd des Maréchaux, 91762 Palaiseau France
| | - O Lundh
- Department of Physics, Lund University, P. O. Box 118, S-22100 Lund, Sweden
| | - V Malka
- LOA, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 bd des Maréchaux, 91762 Palaiseau France
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Depresseux A, Oliva E, Gautier J, Tissandier F, Lambert G, Vodungbo B, Goddet JP, Tafzi A, Nejdl J, Kozlova M, Maynard G, Kim HT, Phuoc KT, Rousse A, Zeitoun P, Sebban S. Demonstration of a Circularly Polarized Plasma-Based Soft-X-Ray Laser. Phys Rev Lett 2015; 115:083901. [PMID: 26340189 DOI: 10.1103/physrevlett.115.083901] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Indexed: 06/05/2023]
Abstract
We report the first experimental demonstration of a laser-driven circularly polarized soft-x-ray laser chain. It has been achieved by seeding a 32.8 nm Kr ix plasma amplifier with a high-order harmonic beam, which has been circularly polarized using a four-reflector polarizer. Our measurements testify that the amplified radiation maintains the initial polarization of the seed pulse in good agreement with our Maxwell-Bloch modeling. The resulting fully circular soft-x-ray laser beam exhibits a Gaussian profile and yields about 10^{10} photons per shot, fulfilling the requirements for laboratory-scale photon-demanding application experiments.
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Affiliation(s)
- A Depresseux
- Laboratoire d'Optique Appliquée, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 boulevard des Maréchaux, 91762 Palaiseau, France
| | - E Oliva
- Laboratoire de Physique des Gaz et des Plasmas, CNRS Université Paris-Sud 11, 91405, Orsay, France
| | - J Gautier
- Laboratoire d'Optique Appliquée, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 boulevard des Maréchaux, 91762 Palaiseau, France
| | - F Tissandier
- Laboratoire d'Optique Appliquée, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 boulevard des Maréchaux, 91762 Palaiseau, France
| | - G Lambert
- Laboratoire d'Optique Appliquée, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 boulevard des Maréchaux, 91762 Palaiseau, France
| | - B Vodungbo
- Laboratoire d'Optique Appliquée, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 boulevard des Maréchaux, 91762 Palaiseau, France
| | - J-P Goddet
- Laboratoire d'Optique Appliquée, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 boulevard des Maréchaux, 91762 Palaiseau, France
| | - A Tafzi
- Laboratoire d'Optique Appliquée, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 boulevard des Maréchaux, 91762 Palaiseau, France
| | - J Nejdl
- ELI Beamlines Project, Institute of Physics of the ASCR, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - M Kozlova
- ELI Beamlines Project, Institute of Physics of the ASCR, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - G Maynard
- Laboratoire de Physique des Gaz et des Plasmas, CNRS Université Paris-Sud 11, 91405, Orsay, France
| | - H T Kim
- Advanced Photonics Research Institute, GIST, Gwangju 500-712, Korea
- Center for Relativistic Laser Science, Institute for Basic Science (IBS), Gwangju 500-712, Korea
| | - K Ta Phuoc
- Laboratoire d'Optique Appliquée, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 boulevard des Maréchaux, 91762 Palaiseau, France
| | - A Rousse
- Laboratoire d'Optique Appliquée, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 boulevard des Maréchaux, 91762 Palaiseau, France
| | - P Zeitoun
- Laboratoire d'Optique Appliquée, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 boulevard des Maréchaux, 91762 Palaiseau, France
| | - S Sebban
- Laboratoire d'Optique Appliquée, ENSTA ParisTech, CNRS, École Polytechnique, Université Paris-Saclay, 828 boulevard des Maréchaux, 91762 Palaiseau, France
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Lardeux AL, Guillier L, Brasseur E, Doux C, Gautier J, Gnanou-Besse N. Impact of the contamination level and the background flora on the growth of Listeria monocytogenes
in ready-to-eat diced poultry. Lett Appl Microbiol 2015; 60:481-90. [DOI: 10.1111/lam.12395] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 01/15/2015] [Accepted: 01/15/2015] [Indexed: 12/25/2022]
Affiliation(s)
- A.-L. Lardeux
- Food Safety Laboratory; Université Paris-Est, Anses (French Agency for Food, Environmental and Occupational Health and Safety); Maisons-Alfort Cedex France
| | - L. Guillier
- Food Safety Laboratory; Université Paris-Est, Anses (French Agency for Food, Environmental and Occupational Health and Safety); Maisons-Alfort Cedex France
| | - E. Brasseur
- Food Safety Laboratory; Université Paris-Est, Anses (French Agency for Food, Environmental and Occupational Health and Safety); Maisons-Alfort Cedex France
| | - C. Doux
- Food Safety Laboratory; Université Paris-Est, Anses (French Agency for Food, Environmental and Occupational Health and Safety); Maisons-Alfort Cedex France
| | - J. Gautier
- Food Safety Laboratory; Université Paris-Est, Anses (French Agency for Food, Environmental and Occupational Health and Safety); Maisons-Alfort Cedex France
| | - N. Gnanou-Besse
- Food Safety Laboratory; Université Paris-Est, Anses (French Agency for Food, Environmental and Occupational Health and Safety); Maisons-Alfort Cedex France
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Lambert G, Andreev A, Gautier J, Giannessi L, Malka V, Petralia A, Sebban S, Stremoukhov S, Tissandier F, Vodungbo B, Zeitoun P. Spatial properties of odd and even low order harmonics generated in gas. Sci Rep 2015; 5:7786. [PMID: 25585715 PMCID: PMC4293601 DOI: 10.1038/srep07786] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 12/15/2014] [Indexed: 11/21/2022] Open
Abstract
High harmonic generation in gases is developing rapidly as a soft X-ray femtosecond light-source for applications. This requires control over all the harmonics characteristics and in particular, spatial properties have to be kept very good. In previous literature, measurements have always included several harmonics contrary to applications, especially spectroscopic applications, which usually require a single harmonic. To fill this gap, we present here for the first time a detailed study of completely isolated harmonics. The contribution of the surrounding harmonics has been totally suppressed using interferential filtering which is available for low harmonic orders. In addition, this allows to clearly identify behaviors of standard odd orders from even orders obtained by frequency-mixing of a fundamental laser and of its second harmonic. Comparisons of the spatial intensity profiles, of the spatial coherence and of the wavefront aberration level of 5ω at 160 nm and 6ω at 135 nm have then been performed. We have established that the fundamental laser beam aberrations can cause the appearance of a non-homogenous donut-shape in the 6ω spatial intensity distribution. This undesirable effect can be easily controlled. We finally conclude that the spatial quality of an even harmonic can be as excellent as in standard generation.
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Affiliation(s)
- G Lambert
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - A Andreev
- Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory, 1, build.2, 119991, Moscow, Russia
| | - J Gautier
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - L Giannessi
- Unità Tecnica Sviluppo di Applicazioni della Radiazione - Modellistica Matematica, ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, 00044 Frascati, Italy
| | - V Malka
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - A Petralia
- Unità Tecnica Sviluppo di Applicazioni della Radiazione - Modellistica Matematica, ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, 00044 Frascati, Italy
| | - S Sebban
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - S Stremoukhov
- 1] Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory, 1, build.2, 119991, Moscow, Russia [2] National Research Centre "Kurchatov Institute", pl. Akademika Kurchatova, 1, Moscow, 123182 Russia
| | - F Tissandier
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - B Vodungbo
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - Ph Zeitoun
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
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Gautier J, Allard-Vannier E, Burlaud-Gaillard J, Domenech J, Chourpa I. Efficacy and Hemotoxicity of Stealth Doxorubicin-Loaded Magnetic Nanovectors on Breast Cancer Xenografts. J Biomed Nanotechnol 2015; 11:177-89. [DOI: 10.1166/jbn.2015.1920] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Blay JY, Domont J, Cropet C, Italiano A, Bompas E, Cassier P, Ray-Coquard I, Rios M, Adenis A, Mir O, Bouché O, Bui B, Duffaud F, Bertucci F, Isambert N, Belleville A, Remir E, Gautier J, Le Cesne A, Perol D. A Randomized Multicentre Phase Ii Study of Pazopanib Plus Best Supportive Care (Bsc) Vs Bsc Alone in Metastatic Gastrointestinal Stromal Tumors (Gist) Resistant to Imatinib and Sunitinib. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu438.57] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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36
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Aydin S, Adeleye M, Siderov J, Chima AS, Bedell HE, Waugh SJ, Gautier J. The influence of crowding on eye movements: A preliminary study. J Vis 2014. [DOI: 10.1167/14.10.1211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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37
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Gautier J, Le Meur O, Waugh S. Saccade direction and surface orientation: effect of scene context. J Vis 2014. [DOI: 10.1167/14.10.756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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38
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Bonnemay L, Hostachy S, Hoffmann C, Gautier J, Gueroui Z. Engineering spatial gradients of signaling proteins using magnetic nanoparticles. Nano Lett 2013; 13:5147-52. [PMID: 24111679 DOI: 10.1021/nl402356b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Intracellular biochemical reactions are often localized in space and time, inducing gradients of enzymatic activity that may play decisive roles in determining cell's fate and functions. However, the techniques available to examine such enzymatic gradients of activity remain limited. Here, we propose a new method to engineer a spatial gradient of signaling protein concentration within Xenopus egg extracts using superparamagnetic nanoparticles. We show that, upon the application of a magnetic field, a concentration gradient of nanoparticles with a tunable length extension is established within confined egg extracts. We then conjugate the nanoparticles to RanGTP, a small G-protein controlling microtubule assembly. We found that the generation of an artificial gradient of Ran-nanoparticles modifies the spatial positioning of microtubule assemblies. Furthermore, the spatial control of the level of Ran concentration allows us to correlate the local fold increase in Ran-nanoparticle concentration with the spatial positioning of the microtubule-asters. Our assay provides a bottom-up approach to examine the minimum ingredients generating polarization and symmetry breaking within cells. More generally, these results show how magnetic nanoparticles and magnetogenetic tools can be used to control the spatiotemporal dynamics of signaling pathways.
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Affiliation(s)
- L Bonnemay
- Département de Chimie, Ecole Normale Supérieure, UMR 8640 CNRS-ENS-UPMC , 24, rue Lhomond, 75005 Paris, France
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Gautier J, Allard-Vannier E, Hervé-Aubert K, Soucé M, Chourpa I. Design strategies of hybrid metallic nanoparticles for theragnostic applications. Nanotechnology 2013; 24:432002. [PMID: 24107712 DOI: 10.1088/0957-4484/24/43/432002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Metallic nanoparticles (MNPs) such as iron oxide and gold nanoparticles are interesting platforms to build theragnostic nanocarriers which combine both therapeutic and diagnostic functions within a single nanostructure. Nevertheless, their surface must be functionalized to be suitable for in vivo applications. Surface functionalization also provides binding sites for targeting ligands, and for drug loading. This review focuses on the materials and surface chemistry used to build hybrid nanocarriers that are inorganic cores functionalized with organic materials. The surface state of the MNPs largely depends on their synthesis routes, and dictates the strategies used for functionalization. Two main strategies can be found in the literature: the design of core-shell nanosystems, or embedding nanoparticles in organic materials. Emerging tendencies such as the use of clusters or alternative coating materials are also described. To present both hydrophilic and lipophilic nanosystems, we chose the doxorubicin anticancer agent as an example, as the molecule presents an affinity for both types of materials.
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Affiliation(s)
- J Gautier
- EA 6295 'Nanomédicaments et Nanosondes', Université François-Rabelais, Tours, F-37200, France
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Gautier J, Passot S, Pénicaud C, Guillemin H, Cenard S, Lieben P, Fonseca F. A low membrane lipid phase transition temperature is associated with a high cryotolerance of Lactobacillus delbrueckii subspecies bulgaricus CFL1. J Dairy Sci 2013; 96:5591-602. [PMID: 23810590 DOI: 10.3168/jds.2013-6802] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 05/15/2013] [Indexed: 11/19/2022]
Abstract
The mechanisms of cellular damage that lactic acid bacteria incur during freeze-thaw processes have not been elucidated to date. Fourier transform infrared spectroscopy was used to investigate in situ the lipid phase transition behavior of the membrane of Lactobacillus delbrueckii ssp. bulgaricus CFL1 cells during the freeze-thaw process. Our objective was to relate the lipid membrane behavior to membrane integrity losses during freezing and to cell-freezing resistance. Cells were produced by using 2 different culture media: de Man, Rogosa, and Sharpe (MRS) broth (complex medium) or mild whey-based medium (minimal medium commonly used in the dairy industry), to obtain different membrane lipid compositions corresponding to different recovery rates of cell viability and functionality after freezing. The lipid membrane behavior studied by Fourier transform infrared spectroscopy was found to be different according to the cell lipid composition and cryotolerance. Freeze-resistant cells, exhibiting a higher content of unsaturated and cyclic fatty acids, presented a lower lipid phase transition temperature (Ts) during freezing (Ts=-8°C), occurring within the same temperature range as the ice nucleation, than freeze-sensitive cells (Ts=+22°C). A subzero value of lipid phase transition allowed the maintenance of the cell membrane in a relatively fluid state during freezing, thus facilitating water flux from the cell and the concomitant volume reduction following ice formation in the extracellular medium. In addition, the lipid phase transition of freeze-resistant cells occurred within a short temperature range, which could be ascribed to a reduced number of fatty acids, representing more than 80% of the total. This short lipid phase transition could be associated with a limited phenomenon of lateral phase separation and membrane permeabilization. This work highlights that membrane phase transitions occurring during freeze-thawing play a fundamental role in the cryotolerance of Lb. delbrueckii ssp. bulgaricus CFL1 cells.
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Affiliation(s)
- J Gautier
- INRA, UMR782, Génie et Microbiologie des Procédés Alimentaires, Thiverval-Grignon, France
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41
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Ge X, Boutu W, Gauthier D, Wang F, Borta A, Barbrel B, Ducousso M, Gonzalez AI, Carré B, Guillaumet D, Perdrix M, Gobert O, Gautier J, Lambert G, Maia FRNC, Hajdu J, Zeitoun P, Merdji H. Impact of wave front and coherence optimization in coherent diffractive imaging. Opt Express 2013; 21:11441-11447. [PMID: 23670000 DOI: 10.1364/oe.21.011441] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We present single shot nanoscale imaging using a table-top femtosecond soft X-ray laser harmonic source at a wavelength of 32 nm. We show that the phase retrieval process in coherent diffractive imaging critically depends on beam quality. Coherence and image fidelity are measured from single-shot coherent diffraction patterns of isolated nano-patterned slits. Impact of flux, wave front and coherence of the soft X-ray beam on the phase retrieval process and the image quality are discussed. After beam improvements, a final image reconstruction is presented with a spatial resolution of 78 nm (half period) in a single 20 fs laser harmonic shot.
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Affiliation(s)
- X Ge
- Commissariat à l’Energie Atomique, Service des Photons, Atomes et Molécules, Bâtiment 522, Centre d’Etude de Saclay, 91191 Gif-sur-Yvette, France
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Gautier J, Passot S, Jamme F, Cenard S, Fonseca F. 28. Using Synchroton infrared microspectroscopy to better understand the freezing-resistance of lactic acid bacteria. Cryobiology 2012. [DOI: 10.1016/j.cryobiol.2012.07.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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43
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Allard-Vannier E, Cohen-Jonathan S, Gautier J, Hervé-Aubert K, Munnier E, Soucé M, Legras P, Passirani C, Chourpa I. Pegylated magnetic nanocarriers for doxorubicin delivery: A quantitative determination of stealthiness in vitro and in vivo. Eur J Pharm Biopharm 2012; 81:498-505. [DOI: 10.1016/j.ejpb.2012.04.002] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2011] [Revised: 03/28/2012] [Accepted: 04/02/2012] [Indexed: 10/28/2022]
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Guilbaud O, Tissandier F, Goddet JP, Ribière M, Sebban S, Gautier J, Joyeux D, Ros D, Cassou K, Kazamias S, Klisnick A, Habib J, Zeitoun P, Benredjem D, Mocek T, Nedjl J, de Rossi S, Maynard G, Cros B, Boudaa A, Calisti A. Fourier-limited seeded soft x-ray laser pulse. Opt Lett 2010; 35:1326-1328. [PMID: 20436557 DOI: 10.1364/ol.35.001326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We present what we believe to be the first measurement of the spectral properties of a soft x-ray laser seeded by a high-order harmonic beam. Using an interferometric method, the spectral profile of a seeded Ni-like krypton soft x-ray laser (32.8 nm) generated by optical field ionization has been experimentally determined, and the shortest possible pulse duration has been deduced. The source exhibits a Voigt spectral profile with an FWHM of 3.1+/-0.3 mA, leading to a Fourier-transform pulse duration of 4.7 ps. This value is comparable with the upper limit of the soft x-ray pulse duration determined by experimentally investigating the gain dynamics, from which we conclude that the source has reached the Fourier limit. The measured bandwidth is in good agreement with the predictions of a radiative transfer code, including gain line narrowing and saturation rebroadening.
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Affiliation(s)
- O Guilbaud
- LIXAM, CNRS, Univ Paris-Sud, bat 350 campus d'Orsay, 91405 Orsay, France.
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45
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Dobosz S, Stabile H, Tortora A, Monot P, Réau F, Bougeard M, Merdji H, Carré B, Martin P, Joyeux D, Phalippou D, Delmotte F, Gautier J, Mercier R. Internal frequency conversion extreme ultraviolet interferometer using mutual coherence properties of two high-order-harmonic sources. Rev Sci Instrum 2009; 80:113102. [PMID: 19947712 DOI: 10.1063/1.3257676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report on an innovative two-dimensional imaging extreme ultraviolet (XUV) interferometer operating at 32 nm based on the mutual coherence of two laser high order harmonics (HOH) sources, separately generated in gas. We give the first evidence that the two mutually coherent HOH sources can be produced in two independent spatially separated gas jets, allowing for probing centimeter-sized objects. A magnification factor of 10 leads to a micron resolution associated with a subpicosecond temporal resolution. Single shot interferograms with a fringe visibility better than 30% are routinely produced. As a test of the XUV interferometer, we measure a maximum electronic density of 3x10(20) cm(-3) 1.1 ns after the creation of a plasma on aluminum target.
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Affiliation(s)
- S Dobosz
- CEA, IRAMIS, Service des Photons Atomes et Molécules, F-91191 Gif- sur-Yvette, France.
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46
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Goddet JP, Sebban S, Gautier J, Zeitoun P, Valentin C, Tissandier F, Marchenko T, Lambert G, Ribières M, Douillet D, Lefrou T, Iaquaniello G, Burgy F, Maynard G, Cros B, Robillard B, Mocek T, Nejdl J, Kozlova M, Jakubczak K. Aberration-free laser beam in the soft x-ray range. Opt Lett 2009; 34:2438-2440. [PMID: 19684808 DOI: 10.1364/ol.34.002438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
By seeding an optical-field-ionized population-inverted plasma amplifier with the 25th harmonic of an IR laser, we have achieved what we believe to be the first aberration-free laser beam in the soft x-ray spectral range. This laser emits within a cone of 1.34 mrad(1/e(2)) at a repetition rate of 10 Hz at a central wavelength of 32.8 nm. The beam exhibits a circular profile and wavefront distortions as low as lambda/17. A theoretical analysis of these results shows that this high beam quality is due to spatial filtering of the seed beam by the plasma amplifier aperture.
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Affiliation(s)
- J Ph Goddet
- Laboratoire d'Optique Appliquée (LOA), ENSTA-Ecole Polytechnique, Chemin de la Hunière,91761 Palaiseau, France.
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47
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Ravasio A, Gauthier D, Maia FRNC, Billon M, Caumes JP, Garzella D, Géléoc M, Gobert O, Hergott JF, Pena AM, Perez H, Carré B, Bourhis E, Gierak J, Madouri A, Mailly D, Schiedt B, Fajardo M, Gautier J, Zeitoun P, Bucksbaum PH, Hajdu J, Merdji H. Single-shot diffractive imaging with a table-top femtosecond soft x-ray laser-harmonics source. Phys Rev Lett 2009; 103:028104. [PMID: 19659250 DOI: 10.1103/physrevlett.103.028104] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Indexed: 05/24/2023]
Abstract
Coherent x-ray diffractive imaging is a powerful method for studies on nonperiodic structures on the nanoscale. Access to femtosecond dynamics in major physical, chemical, and biological processes requires single-shot diffraction data. Up to now, this has been limited to intense coherent pulses from a free electron laser. Here we show that laser-driven ultrashort x-ray sources offer a comparatively inexpensive alternative. We present measurements of single-shot diffraction patterns from isolated nano-objects with a single 20 fs pulse from a table-top high-harmonic x-ray laser. Images were reconstructed with a resolution of 119 nm from the single shot and 62 nm from multiple shots.
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Affiliation(s)
- A Ravasio
- Commissariat à l'Energie Atomique, Service des Photons, Atomes et Molécules, Bâtiment 522, Centre d'Etude de Saclay, 91191 Gif-sur-Yvette, France
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Sablin MP, Negrier S, Ravaud A, Oudard S, Balleyguier C, Gautier J, Celier C, Medioni J, Escudier B. Sequential sorafenib and sunitinib for renal cell carcinoma. J Urol 2009; 182:29-34; discussion 34. [PMID: 19447417 DOI: 10.1016/j.juro.2009.02.119] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2008] [Indexed: 10/20/2022]
Abstract
PURPOSE Sorafenib and sunitinib are 2 tyrosine kinase inhibitors that were recently approved for renal cell carcinoma. In many patients sequential administration of the 2 drugs occurs because of the lack of sustained efficacy of the first agent. We determined the efficacy and safety of sequential administration. MATERIALS AND METHODS To determine whether cross-resistance occurs between these 2 drugs we analyzed the outcome in 90 consecutive patients with renal cell carcinoma from 4 sites in France who had received the 2 drugs sequentially. All patients received sorafenib followed by sunitinib or vice versa. From 2003 to 2006, 68 patients received sorafenib, while 22 received sunitinib first. RESULTS In the sorafenib-sunitinib group median progression-free survival was 26 weeks with sorafenib and 28 with sunitinib. In the sunitinib-sorafenib group median progression-free survival was 22 weeks with sunitinib and 17 with sorafenib. Median overall survival was 135 weeks in the sorafenib-sunitinib group and 82 weeks in the sunitinib-sorafenib group (HR 0.49, 95% CI 0.16 to 0.96, p = 0.04). The average duration of sequential administration was 61 and 49 weeks, respectively, in the sorafenib-sunitinib and sunitinib-sorafenib groups. Each sequence was well tolerated and no increase in grade 3-4 toxicity was observed. CONCLUSIONS Overall this retrospective study supports the conclusion of the lack of absolute cross-resistance between tyrosine kinase inhibitors. In this renal cell carcinoma population sorafenib followed by sunitinib was associated with longer survival than sunitinib followed by sorafenib. However, this observation needs further confirmation.
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Affiliation(s)
- M P Sablin
- Institut Gustave Roussy, Villejuif, France
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49
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Chalupský J, Juha L, Hájková V, Cihelka J, Vysín L, Gautier J, Hajdu J, Hau-Riege SP, Jurek M, Krzywinski J, London RA, Papalazarou E, Pelka JB, Rey G, Sebban S, Sobierajski R, Stojanovic N, Tiedtke K, Toleikis S, Tschentscher T, Valentin C, Wabnitz H, Zeitoun P. Non-thermal desorption/ablation of molecular solids induced by ultra-short soft x-ray pulses. Opt Express 2009; 17:208-217. [PMID: 19129890 DOI: 10.1364/oe.17.000208] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report the first observation of single-shot soft x-ray laser induced desorption occurring below the ablation threshold in a thin layer of poly (methyl methacrylate)--PMMA. Irradiated by the focused beam from the Free-electron LASer in Hamburg (FLASH) at 21.7 nm, the samples have been investigated by atomic-force microscope (AFM) enabling the visualization of mild surface modifications caused by the desorption. A model describing non-thermal desorption and ablation has been developed and used to analyze single-shot imprints in PMMA. An intermediate regime of materials removal has been found, confirming model predictions. We also report below-threshold multiple-shot desorption of PMMA induced by high-order harmonics (HOH) at 32 nm. Short-time exposure imprints provide sufficient information about transverse beam profile in HOH's tight focus whereas long-time exposed PMMA exhibits radiation-initiated surface ardening making the beam profile measurement infeasible.
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Affiliation(s)
- J Chalupský
- Institute of Physics, Academy of Sciences of the Czech Republic, Prague 8, Czech Republic.
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50
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Négrier S, Gross-Goupil M, Pérol D, Gautier J, Balcaceres J, Massard C, Celier C, Ravaud A, Oudard S, Escudier BJ. Analysis of characteristics in patients (pts) with metastatic renal cell cancer (MRCC) who achieved a prolonged benefit from sunitinib or sorafenib. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.16022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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