1
|
Clottes P, Bochaton T, Mechtouff L, Derex L, Cho TH, Fontaine J, Rascle L, Berthezène Y, Amaz C, Thibault H, Bergerot C, Nighoghossian N, Ong E. Safety and efficacy of reperfusion therapies in acute ischemic stroke related to left ventricular thrombus: A retrospective cohort study. Rev Neurol (Paris) 2024:S0035-3787(24)00417-X. [PMID: 38431497 DOI: 10.1016/j.neurol.2023.12.009] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 12/04/2023] [Accepted: 12/17/2023] [Indexed: 03/05/2024]
Abstract
BACKGROUND Left ventricular thrombus (LVT) is a source of cardiogenic embolic stroke. Conflicting data exist in the literature regarding the utilization of intravenous thrombolysis (IVT) at the acute phase of stroke in presence of LVT. We sought to assess the efficacy and safety of reperfusion therapies (IVT and/or thrombectomy) in patients with LVT. METHODS We retrospectively analyzed patients with acute ischemic stroke and proven LVT and divided them in two groups: an intervention group with patients treated by reperfusion therapies and a control group with untreated patients. RESULTS Between 2009 and 2021, 3890 patients were treated by reperfusion therapies in the Lyon stroke center, 33 of whom (0.9%) had LVT. We identified 27 control patients. There were more embolic recurrences at six months in the intervention group than in the control group (nine recurrences versus three, P=0.03, OR=13.56, 95% CI [1.5;195]). Only two early embolic recurrences (< 24h) occurred, both in the IVT group. There was a 4.8-fold decrease in the median NIHSS score between baseline and 24h follow-up in the intervention group (P<0.0001), and the two groups exhibited similar six-month mortality. At stroke onset, cardiopathy was known in 70% of patients, while LVT was known in 30%. CONCLUSION Acute reperfusion therapies seem to be effective in the context of stroke in patients with LVT. However, further studies are needed to support the hypothesis that stroke recurrence might be related to the use of IVT.
Collapse
Affiliation(s)
- P Clottes
- Service de neurologie vasculaire, hôpital Pierre-Wertheimer, 59, boulevard Pinel, 69500 Bron, France.
| | - T Bochaton
- Service d'urgences cardiologiques et de soins intensifs de cardiologie, hôpital Louis-Pradel, 59, boulevard Pinel, 69500 Bron, France
| | - L Mechtouff
- Service de neurologie vasculaire, hôpital Pierre-Wertheimer, 59, boulevard Pinel, 69500 Bron, France
| | - L Derex
- Service de neurologie vasculaire, hôpital Pierre-Wertheimer, 59, boulevard Pinel, 69500 Bron, France
| | - T-H Cho
- Service de neurologie vasculaire, hôpital Pierre-Wertheimer, 59, boulevard Pinel, 69500 Bron, France
| | - J Fontaine
- Service de neurologie vasculaire, hôpital Pierre-Wertheimer, 59, boulevard Pinel, 69500 Bron, France
| | - L Rascle
- Service de neurologie vasculaire, hôpital Pierre-Wertheimer, 59, boulevard Pinel, 69500 Bron, France
| | - Y Berthezène
- Service d'imagerie médicale, 59, boulevard Pinel, 69500 Bron, France
| | - C Amaz
- Centre d'investigations cliniques, hôpital Louis-Pradel, 59, boulevard Pinel, 69500 Bron, France
| | - H Thibault
- Service des explorations fonctionnelles cardiovasculaires, hôpital Louis-Pradel, 59, boulevard Pinel, 69500 Bron, France
| | - C Bergerot
- Service des explorations fonctionnelles cardiovasculaires, hôpital Louis-Pradel, 59, boulevard Pinel, 69500 Bron, France
| | - N Nighoghossian
- Service de neurologie vasculaire, hôpital Pierre-Wertheimer, 59, boulevard Pinel, 69500 Bron, France
| | - E Ong
- Service de neurologie vasculaire, hôpital Pierre-Wertheimer, 59, boulevard Pinel, 69500 Bron, France
| |
Collapse
|
2
|
Kis B, Pereira M, Kim J, El-Haddad G, Choi J, Fontaine J, Saltos A, Creelan B, Tanvetyanon T. Abstract No. 139 ▪ FEATURED ABSTRACT Transarterial Chemoperfusion Treatment of Unresectable Pleural Mesothelioma: A Phase 2 Prospective Study. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.191] [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: 02/27/2023] Open
|
3
|
Boulet N, Briot A, Jargaud V, Estève D, Rémaury A, Belles C, Viana P, Fontaine J, Murphy L, Déon C, Guillemot M, Pech C, Veeranagouda Y, Didier M, Decaunes P, Mouisel E, Carpéné C, Iacovoni JS, Zakaroff-Girard A, Grolleau JL, Galitzky J, Ledoux S, Guillemot JC, Bouloumié A. Notch activation shifts the fate decision of senescent progenitors toward myofibrogenesis in human adipose tissue. Aging Cell 2023; 22:e13776. [PMID: 36617688 PMCID: PMC10014050 DOI: 10.1111/acel.13776] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 12/08/2022] [Accepted: 12/22/2022] [Indexed: 01/10/2023] Open
Abstract
Senescence is a key event in the impairment of adipose tissue (AT) function with obesity and aging but the underlying molecular and cellular players remain to be fully defined, particularly with respect to the human AT progenitors. We have found distinct profiles of senescent progenitors based on AT location between stroma from visceral versus subcutaneous AT. In addition to flow cytometry, we characterized the location differences with transcriptomic and proteomic approaches, uncovering the genes and developmental pathways that are underlying replicative senescence. We identified key components to include INBHA as well as SFRP4 and GREM1, antagonists for the WNT and BMP pathways, in the senescence-associated secretory phenotype and NOTCH3 in the senescence-associated intrinsic phenotype. Notch activation in AT progenitors inhibits adipogenesis and promotes myofibrogenesis independently of TGFβ. In addition, we demonstrate that NOTCH3 is enriched in the premyofibroblast progenitor subset, which preferentially accumulates in the visceral AT of patients with an early obesity trajectory. Herein, we reveal that NOTCH3 plays a role in the balance of progenitor fate determination preferring myofibrogenesis at the expense of adipogenesis. Progenitor NOTCH3 may constitute a tool to monitor replicative senescence and to limit AT dysfunction in obesity and aging.
Collapse
Affiliation(s)
- Nathalie Boulet
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Anaïs Briot
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Valentin Jargaud
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - David Estève
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Anne Rémaury
- Sanofi, Research & Development, Translational Sciences, Biochemistry Team, Chilly-Mazarin cedex, France
| | - Chloé Belles
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Pénélope Viana
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Jessica Fontaine
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Lucie Murphy
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Catherine Déon
- Sanofi, Research & Development, Translational Sciences, Biochemistry Team, Chilly-Mazarin cedex, France
| | - Marie Guillemot
- Sanofi, Research & Development, Exploratory Unit, Proteomic Team, Toulouse, France
| | - Catherine Pech
- Sanofi, Research & Development, Exploratory Unit, Proteomic Team, Toulouse, France
| | - Yaligara Veeranagouda
- Sanofi, Research & Development, Translational Sciences, Biochemistry Team, Chilly-Mazarin cedex, France
| | - Michel Didier
- Sanofi, Research & Development, Translational Sciences, Biochemistry Team, Chilly-Mazarin cedex, France
| | - Pauline Decaunes
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Etienne Mouisel
- Metabolic and Cardiovascular Research Institute, Team MetaDiab, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Christian Carpéné
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Jason S Iacovoni
- Metabolic and Cardiovascular Research Institute, Bioinformatic Core Facility, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Alexia Zakaroff-Girard
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Jean-Louis Grolleau
- Plastic, reconstructive and aesthetic surgery, CHU Toulouse Rangueil, Toulouse, France
| | - Jean Galitzky
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| | - Séverine Ledoux
- Center of Obesity, Explorations fonctionnelles, Louis Mourier Hospital (APHP), Université Paris Diderot, Colombes, France
| | - Jean-Claude Guillemot
- Sanofi, Research & Development, Translational Sciences, Biochemistry Team, Chilly-Mazarin cedex, France
| | - Anne Bouloumié
- Metabolic and Cardiovascular Research Institute, Team Dinamix, INSERM UMR1297 and Université de Toulouse, Toulouse, France
| |
Collapse
|
4
|
Fontaine J, Arndt C, Krug M, Lukas-Croisier C, Delemer B. Dépistage de la rétinopathie diabétique par électrorétinogramme réalisé par une infirmière en pratique avancée. Annales d'Endocrinologie 2023. [DOI: 10.1016/j.ando.2022.12.421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
|
5
|
Carpéné C, Viana P, Fontaine J, Laurell H, Grolleau JL. Multiple Direct Effects of the Dietary Protoalkaloid N-Methyltyramine in Human Adipocytes. Nutrients 2022; 14:nu14153118. [PMID: 35956295 PMCID: PMC9370673 DOI: 10.3390/nu14153118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 06/30/2022] [Revised: 07/23/2022] [Accepted: 07/27/2022] [Indexed: 02/06/2023] Open
Abstract
Dietary amines have been the subject of a novel interest in nutrition since the discovery of trace amine-associated receptors (TAARs), especially TAAR-1, which recognizes tyramine, phenethylamine, tryptamine, octopamine, N-methyltyramine (NMT), synephrine, amphetamine and related derivatives. Alongside the psychostimulant properties of TAAR-1 ligands, it is their ephedrine-like action on weight loss that drives their current consumption via dietary supplements advertised for ‘fat-burning’ properties. Among these trace amines, tyramine has recently been described, at high doses, to exhibit an antilipolytic action and activation of glucose transport in human adipocytes, i.e., effects that are facilitating lipid storage rather than mobilization. Because of its close structural similarity to tyramine, NMT actions on human adipocytes therefore must to be reevaluated. To this aim, we studied the lipolytic and antilipolytic properties of NMT together with its interplay with insulin stimulation of glucose transport along with amine oxidase activities in adipose cells obtained from women undergoing abdominal surgery. NMT activated 2-deoxyglucose uptake when incubated with freshly isolated adipocytes at 0.01–1 mM, reaching one-third of the maximal stimulation by insulin. However, when combined with insulin, NMT limited by half the action of the lipogenic hormone on glucose transport. The NMT-induced stimulation of hexose uptake was sensitive to inhibitors of monoamine oxidases (MAO) and of semicarbazide-sensitive amine oxidase (SSAO), as was the case for tyramine and benzylamine. All three amines inhibited isoprenaline-induced lipolysis to a greater extent than insulin, while they were poorly lipolytic on their own. All three amines—but not isoprenaline—interacted with MAO or SSAO. Due to these multiple effects on human adipocytes, NMT cannot be considered as a direct lipolytic agent, potentially able to improve lipid mobilization and fat oxidation in consumers of NMT-containing dietary supplements.
Collapse
Affiliation(s)
- Christian Carpéné
- Institut des Maladies Métaboliques et Cardiovasculaires (I2MC), Institut National de la Santé et de la Recherche Médicale (INSERM U1297), I2MC, CEDEX 4, 31432 Toulouse, France; (P.V.); (J.F.); (H.L.)
- CHU Rangueil, Université Paul Sabatier, I2MC, CEDEX 4, 31432 Toulouse, France
- Correspondence:
| | - Pénélope Viana
- Institut des Maladies Métaboliques et Cardiovasculaires (I2MC), Institut National de la Santé et de la Recherche Médicale (INSERM U1297), I2MC, CEDEX 4, 31432 Toulouse, France; (P.V.); (J.F.); (H.L.)
- CHU Rangueil, Université Paul Sabatier, I2MC, CEDEX 4, 31432 Toulouse, France
| | - Jessica Fontaine
- Institut des Maladies Métaboliques et Cardiovasculaires (I2MC), Institut National de la Santé et de la Recherche Médicale (INSERM U1297), I2MC, CEDEX 4, 31432 Toulouse, France; (P.V.); (J.F.); (H.L.)
- CHU Rangueil, Université Paul Sabatier, I2MC, CEDEX 4, 31432 Toulouse, France
| | - Henrik Laurell
- Institut des Maladies Métaboliques et Cardiovasculaires (I2MC), Institut National de la Santé et de la Recherche Médicale (INSERM U1297), I2MC, CEDEX 4, 31432 Toulouse, France; (P.V.); (J.F.); (H.L.)
- CHU Rangueil, Université Paul Sabatier, I2MC, CEDEX 4, 31432 Toulouse, France
| | | |
Collapse
|
6
|
Servais L, Boschetti G, Meunier C, Gay C, Cotte E, François Y, Rozieres A, Fontaine J, Cuminal L, Chauvenet M, Charlois AL, Isaac S, Traverse-Glehen A, Roblin X, Flourié B, Valette PJ, Nancey S. Intestinal Conventional Ultrasonography, Contrast-Enhanced Ultrasonography and Magnetic Resonance Enterography in Assessment of Crohn's Disease Activity: A Comparison with Surgical Histopathology Analysis. Dig Dis Sci 2022; 67:2492-2502. [PMID: 34052948 DOI: 10.1007/s10620-021-07074-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 05/15/2020] [Accepted: 05/24/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND AND AIMS Contrast-enhanced ultrasonography (CEUS) is a potential interesting method for assessing accurately Crohn's disease (CD) activity. We compared the value of intestinal ultrasonography (US) coupled with contrast agent injection with that of magnetic resonance enterography (MRE) in the assessment of small bowel CD activity using surgical histopathology analysis as reference. METHODS Seventeen clinically active CD patients (14 women, mean age 33 years) requiring an ileal or ileocolonic resection were prospectively enrolled. All performed a MRE and a US coupled with contrast agent injection (CEUS) less than 8 weeks prior to surgery. Various imaging qualitative and quantitative parameters were recorded and their respective performance to detect disease activity, disease extension and presence of complications was compared to surgical histopathological analysis. RESULTS The median wall thickness measured by US differed significantly between patients with non-severely active CD (n = 5) and those with severely active CD (n = 12) [7.0 mm, IQR (6.5-9.5) vs 10.0 mm, IQR (8.0-12.0), respectively; p = 0.03]. A non-significant trend was found with MRE with a median wall thickness in severe active CD of 10.0 mm, IQR (8.0-13.7) compared with 8.0 mm, IQR (7.5-10.5) in non-severely active CD (p = 0.07). The area under the ROC curve (AUROC) of the wall thickness assessed by US and MRE to identify patients with or without severely active CD on surgical specimens were 0.85, 95% CI (0.64-1.04), p = 0.03 and 0.80, 95% CI (0.56-1.01), p = 0.07, respectively. Among the parameters derived from the time-intensity curve during CEUS, time to peak and rise time were the two most accurate markers [AUROC = 0.88, 95% CI (0.70-1.04), p = 0.02 and 0.86, 95% CI (0.68-1.04), p = 0.03] to detect patients with severely active CD assessed on surgical specimens. CONCLUSION The accuracy of intestinal CEUS is close to that of conventional US to detect disease activity. A thickened bowel and shortened time to peak and rise time were the most accurate to identify CD patients with severe histological disease activity.
Collapse
Affiliation(s)
- L Servais
- Department of Gastroenterology, Lyon-Sud Hospital, Hospices Civils de Lyon, 165 Chemin du Grand Revoyet, 69495, Pierre-Bénite, France
| | - G Boschetti
- Department of Gastroenterology, Lyon-Sud Hospital, Hospices Civils de Lyon, 165 Chemin du Grand Revoyet, 69495, Pierre-Bénite, France.,INSERM U1111, International Center for Research in Infectiology, Lyon, France
| | - C Meunier
- Department of Gastroenterology, Lyon-Sud Hospital, Hospices Civils de Lyon, 165 Chemin du Grand Revoyet, 69495, Pierre-Bénite, France.,INSERM U1111, International Center for Research in Infectiology, Lyon, France
| | - C Gay
- Department of Gastroenterology, Lyon-Sud Hospital, Hospices Civils de Lyon, 165 Chemin du Grand Revoyet, 69495, Pierre-Bénite, France
| | - E Cotte
- Department of Digestive Surgery, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre-Bénite, France
| | - Y François
- Department of Digestive Surgery, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre-Bénite, France
| | - A Rozieres
- INSERM U1111, International Center for Research in Infectiology, Lyon, France
| | - J Fontaine
- Department of Pathology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre-Bénite, France
| | - L Cuminal
- Department of Radiology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre-Bénite, France
| | - M Chauvenet
- Department of Gastroenterology, Lyon-Sud Hospital, Hospices Civils de Lyon, 165 Chemin du Grand Revoyet, 69495, Pierre-Bénite, France
| | - A L Charlois
- Department of Gastroenterology, Lyon-Sud Hospital, Hospices Civils de Lyon, 165 Chemin du Grand Revoyet, 69495, Pierre-Bénite, France
| | - S Isaac
- Department of Pathology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre-Bénite, France
| | - A Traverse-Glehen
- Department of Pathology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre-Bénite, France
| | - X Roblin
- Department of Gastroenterology, CHU Saint-Etienne, Saint-Etienne, France
| | - B Flourié
- Department of Gastroenterology, Lyon-Sud Hospital, Hospices Civils de Lyon, 165 Chemin du Grand Revoyet, 69495, Pierre-Bénite, France.,INSERM U1111, International Center for Research in Infectiology, Lyon, France
| | - P J Valette
- Department of Radiology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre-Bénite, France
| | - S Nancey
- Department of Gastroenterology, Lyon-Sud Hospital, Hospices Civils de Lyon, 165 Chemin du Grand Revoyet, 69495, Pierre-Bénite, France. .,INSERM U1111, International Center for Research in Infectiology, Lyon, France.
| |
Collapse
|
7
|
Roisin C, Coutelier A, Houben D, Fontaine J, Lounès-Hadj Sahraoui A, Faucon MP, Firmin S. Modification of root microRNAs expression and exudation of wheat in response to bisphenol A contamination. Toxicol Lett 2021. [DOI: 10.1016/s0378-4274(21)00823-7] [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: 11/25/2022]
|
8
|
Guibert M, Oliver C, Durand T, Le Mogne T, Le Bot A, Dalmas D, Scheibert J, Fontaine J. A versatile flexure-based six-axis force/torque sensor and its application to tribology. Rev Sci Instrum 2021; 92:085002. [PMID: 34470375 DOI: 10.1063/5.0057266] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/16/2021] [Indexed: 06/13/2023]
Abstract
Six-axis force/torque sensors are increasingly needed in mechanical engineering. Here, we introduce a flexure-based design for such sensors, which solves some of the drawbacks of the existing designs. In particular, it is backlash-free, it can be wirelessly monitored, it exactly enforces 90° angles between axes, and it enables visual inspection of the monitored system, thanks to its hollow structure. We first describe the generic design, implementation, and calibration procedure. We then demonstrate its capabilities through three illustration examples relevant to the field of tribology: low friction measurements under ultra-high vacuum, multi-directional friction measurements of elastomer contacts, and force/torque-based contact position monitoring.
Collapse
Affiliation(s)
- M Guibert
- Université de Lyon, Ecole Centrale de Lyon, ENISE, ENTPE, CNRS, Laboratoire de Tribologie et Dynamique des Systèmes LTDS, UMR 5513, F-69134 Ecully, France
| | - C Oliver
- Université de Lyon, Ecole Centrale de Lyon, ENISE, ENTPE, CNRS, Laboratoire de Tribologie et Dynamique des Systèmes LTDS, UMR 5513, F-69134 Ecully, France
| | - T Durand
- Université de Lyon, Ecole Centrale de Lyon, ENISE, ENTPE, CNRS, Laboratoire de Tribologie et Dynamique des Systèmes LTDS, UMR 5513, F-69134 Ecully, France
| | - T Le Mogne
- Université de Lyon, Ecole Centrale de Lyon, ENISE, ENTPE, CNRS, Laboratoire de Tribologie et Dynamique des Systèmes LTDS, UMR 5513, F-69134 Ecully, France
| | - A Le Bot
- Université de Lyon, Ecole Centrale de Lyon, ENISE, ENTPE, CNRS, Laboratoire de Tribologie et Dynamique des Systèmes LTDS, UMR 5513, F-69134 Ecully, France
| | - D Dalmas
- Université de Lyon, Ecole Centrale de Lyon, ENISE, ENTPE, CNRS, Laboratoire de Tribologie et Dynamique des Systèmes LTDS, UMR 5513, F-69134 Ecully, France
| | - J Scheibert
- Université de Lyon, Ecole Centrale de Lyon, ENISE, ENTPE, CNRS, Laboratoire de Tribologie et Dynamique des Systèmes LTDS, UMR 5513, F-69134 Ecully, France
| | - J Fontaine
- Université de Lyon, Ecole Centrale de Lyon, ENISE, ENTPE, CNRS, Laboratoire de Tribologie et Dynamique des Systèmes LTDS, UMR 5513, F-69134 Ecully, France
| |
Collapse
|
9
|
Barragué H, Fontaine J, Abravanel F, Mauré E, Péron JM, Alric L, Dubois M, Izopet J, Champagne E. Mobilization of γδ T Cells and IL-10 Production at the Acute Phase of Hepatitis E Virus Infection in Cytomegalovirus Carriers. J Immunol 2021; 206:1027-1038. [PMID: 33483348 DOI: 10.4049/jimmunol.2000187] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 12/26/2020] [Indexed: 12/12/2022]
Abstract
Alterations in the γδ T cell compartment have been reported in immunocompromised individuals infected with hepatitis E virus (HEV)-g3. We now report the analysis of blood γδ T cells from acutely HEV-infected individuals in the absence of immunosuppression. In these patients, non-Vδ2 (ND2) γδ T cells outnumbered otherwise predominant Vδ2 cells selectively in human CMV (HCMV)-seropositive patients and were higher than in HCMVpos controls, mimicking HCMV reactivation, whereas their serum was PCR-negative for HCMV. Stimulation of their lymphocytes with HEV-infected hepatocarcinoma cells led to an HEV-specific response in γδ subsets of HCMVpos individuals. HEV infection was associated with a lowered expression of TIGIT, LAG-3, and CD160 immune checkpoint markers on ND2 effector memory cells in HCMVneg but not in HCMVpos HEV patients. γδ cell lines, predominantly ND2, were generated from patients after coculture with hepatocarcinoma cells permissive to HEV and IL-2/12/18. Upon restimulation with HEV-infected or uninfected cells and selected cytokines, these cell lines produced IFN-γ and IL-10, the latter being induced by IL-12 in IFN-γ-producing cells and upregulated by HEV and IL-18. They were also capable of suppressing the proliferation of CD3/CD28-activated CD4 cells in transwell experiments. Importantly, IL-10 was detected in the plasma of 10 of 10 HCMVpos HEV patients but rarely in controls or HCMVneg HEV patients, implying that γδ cells are probably involved in IL-10 production at the acute phase of infection. Our data indicate that HEV mobilizes a pool of ND2 memory cells in HCMV carriers, promoting the development of an immunoregulatory environment.
Collapse
Affiliation(s)
- Hugo Barragué
- Université Toulouse III Paul-Sabatier, F-31024 Toulouse, France.,Centre de Physiopathologie de Toulouse Purpan, INSERM-U1043, CNRS-UMR5282, F-31024 Toulouse, France
| | - Jessica Fontaine
- Université Toulouse III Paul-Sabatier, F-31024 Toulouse, France.,Centre de Physiopathologie de Toulouse Purpan, INSERM-U1043, CNRS-UMR5282, F-31024 Toulouse, France
| | - Florence Abravanel
- Centre de Physiopathologie de Toulouse Purpan, INSERM-U1043, CNRS-UMR5282, F-31024 Toulouse, France.,CHU Toulouse, Hôspital Purpan, Laboratoire de Virologie, Centre National de Référence Hépatite E, F-31059 Toulouse, France; and
| | - Emilie Mauré
- Centre de Physiopathologie de Toulouse Purpan, INSERM-U1043, CNRS-UMR5282, F-31024 Toulouse, France
| | - Jean-Marie Péron
- Pôle Hospitalo-Universitaire des Maladies de l'Appareil Digestif, Hôspital Rangueil, F-31059 Toulouse, France
| | - Laurent Alric
- Pôle Hospitalo-Universitaire des Maladies de l'Appareil Digestif, Hôspital Rangueil, F-31059 Toulouse, France
| | - Martine Dubois
- CHU Toulouse, Hôspital Purpan, Laboratoire de Virologie, Centre National de Référence Hépatite E, F-31059 Toulouse, France; and
| | - Jacques Izopet
- Université Toulouse III Paul-Sabatier, F-31024 Toulouse, France.,Centre de Physiopathologie de Toulouse Purpan, INSERM-U1043, CNRS-UMR5282, F-31024 Toulouse, France.,CHU Toulouse, Hôspital Purpan, Laboratoire de Virologie, Centre National de Référence Hépatite E, F-31059 Toulouse, France; and
| | - Eric Champagne
- Université Toulouse III Paul-Sabatier, F-31024 Toulouse, France; .,Centre de Physiopathologie de Toulouse Purpan, INSERM-U1043, CNRS-UMR5282, F-31024 Toulouse, France
| |
Collapse
|
10
|
Fontaine J, Tavernier G, Morin N, Carpéné C. Vanadium-dependent activation of glucose transport in adipocytes by catecholamines is not mediated via adrenoceptor stimulation or monoamine oxidase activity. World J Diabetes 2020; 11:622-643. [PMID: 33384769 PMCID: PMC7754167 DOI: 10.4239/wjd.v11.i12.622] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/12/2020] [Accepted: 10/26/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Benzylamine and methylamine activate glucose uptake in adipocytes. For tyramine, this effect has even been extended to cardiomyocytes. AIM To investigate the effects of catecholamines and other amines on glucose uptake. METHODS A screening compared 25 biogenic amines on 2-deoxyglucose (2-DG) uptake activation in rat adipocytes. Pharmacological approaches and transgenic mouse models were then used to decipher the mode of action of several hits. RESULTS In rat adipocytes, insulin stimulation of 2-DG uptake was reproduced with catecholamines. 100 µmol/L or 1 mmol/L adrenaline, noradrenaline, dopamine and deoxyepinephrine, maximally activated hexose transport only when sodium orthovanadate was added at 100 µmol/L. Such activation was similar to that already reported for benzylamine, methylamine and tyramine, well-recognized substrates of semicarbazide-sensitive amine oxidase (SSAO) and monoamine oxidase (MAO). Several, but not all, tested agonists of β-adrenoreceptors (β-ARs) also activated glucose transport while α-AR agonists were inactive. Lack of blockade by α- and β-AR antagonists indicated that catecholamine-induced 2-DG uptake was not mediated by AR stimulation. Adipocytes from mice lacking β1-, β2- and β3-ARs (triple KO) also responded to millimolar doses of adrenaline or noradrenaline by activating hexose transport in the presence of 100 µmol/L vanadate. The MAO blocker pargyline, and SSAO inhibitors did not block the effects of adrenaline or noradrenaline plus vanadate, which were blunted by antioxidants. CONCLUSION Catecholamines exert unexpected insulin-like actions in adipocytes when combined with vanadium. For limiting insulin resistance by activating glucose consumption at least in fat stores, we propose that catecholamine derivatives combined with vanadium can generate novel complexes that may have low toxicity and promising anti-diabetic properties.
Collapse
Affiliation(s)
- Jessica Fontaine
- Institut des Maladies Métaboliques et Cardiovasculaires, Institut National de la Santé et de la Recherche Médicale, INSERM UMR1048, Université Paul Sabatier Toulouse III, Toulouse 31432, France
| | - Geneviève Tavernier
- Institut des Maladies Métaboliques et Cardiovasculaires, Institut National de la Santé et de la Recherche Médicale, INSERM UMR1048, Université Paul Sabatier Toulouse III, Toulouse 31432, France
| | - Nathalie Morin
- Institut des Maladies Métaboliques et Cardiovasculaires, Institut National de la Santé et de la Recherche Médicale, INSERM UMR1048, Université Paul Sabatier Toulouse III, Toulouse 31432, France
- INSERM UMR 1139 Faculté de Pharmacie, Université de Paris, Paris 75006, France
| | - Christian Carpéné
- Institut des Maladies Métaboliques et Cardiovasculaires, Institut National de la Santé et de la Recherche Médicale, INSERM UMR1048, Université Paul Sabatier Toulouse III, Toulouse 31432, France
| |
Collapse
|
11
|
McDonald J, Hoffe S, Frakes J, Mehta R, Fontaine J, Pimiento J. Effect of Tumor Grade on Neoadjuvant Treatment Outcome in Esophageal Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1989] [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: 11/25/2022]
|
12
|
Carpéné C, Les F, Mercader J, Gomez-Zorita S, Grolleau JL, Boulet N, Fontaine J, Iglesias-Osma MC, Garcia-Barrado MJ. Opipramol Inhibits Lipolysis in Human Adipocytes without Altering Glucose Uptake and Differently from Antipsychotic and Antidepressant Drugs with Adverse Effects on Body Weight Control. Pharmaceuticals (Basel) 2020; 13:ph13030041. [PMID: 32151075 PMCID: PMC7151722 DOI: 10.3390/ph13030041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 02/27/2020] [Accepted: 03/03/2020] [Indexed: 12/15/2022] Open
Abstract
Treatment with several antipsychotic drugs exhibits a tendency to induce weight gain and diabetic complications. The proposed mechanisms by which the atypical antipsychotic drug olanzapine increases body weight include central dysregulations leading to hyperphagia and direct peripheral impairment of fat cell lipolysis. Several investigations have reproduced in vitro direct actions of antipsychotics on rodent adipocytes, cultured preadipocytes, or human adipose tissue-derived stem cells. However, to our knowledge, no such direct action has been described in human mature adipocytes. The aim of the present study was to compare in human adipocytes the putative direct alterations of lipolysis by antipsychotics (haloperidol, olanzapine, ziprazidone, risperidone), antidepressants (pargyline, phenelzine), or anxiolytics (opipramol). Lipolytic responses to the tested drugs, and to recognized lipolytic (e.g., isoprenaline) or antilipolytic agents (e.g., insulin) were determined, together with glucose transport and amine oxidase activities in abdominal subcutaneous adipocytes from individuals undergoing plastic surgery. None of the tested drugs were lipolytic. Surprisingly, only opipramol exhibited substantial antilipolytic properties in the micromolar to millimolar range. An opipramol antilipolytic effect was evident against isoprenaline-, forskolin-, or atrial natriuretic peptide-stimulated lipolysis. Opipramol did not impair insulin activation of glucose transport but inhibited monoamine oxidase (MAO) activity to the same extent as antidepressants recognized as MAO inhibitors (pargyline, harmine, or phenelzine), whereas antipsychotics were inefficient. Considering its unique properties, opipramol, which is not associated with weight gain in treated patients, is a good candidate for drug repurposing because it limits exaggerated lipolysis, prevents hydrogen peroxide release by amine oxidases in adipocytes, and is thereby of potential use to limit lipotoxicity and oxidative stress, two deleterious complications of diabetes and obesity.
Collapse
Affiliation(s)
- Christian Carpéné
- Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Team 1, 31432 Toulouse, France; (N.B.); (J.F.)
- I2MC, University of Toulouse, UMR1048, Paul Sabatier University, 31432 Toulouse, France
- Correspondence:
| | - Francisco Les
- Department of Pharmacy, Faculty of Health Sciences, Universidad San Jorge, 50830 Villanueva de Gállego Zaragoza, Spain;
- Instituto Agroalimentario de Aragón-IA2, CITA-Universidad de Zaragoza, 50013 Zaragoza, Spain
| | - Josep Mercader
- Department of Fundamental Biology and Health Sciences, University of the Balearic Islands, 07122 Palma, Spain;
- Balearic Islands Health Research Institute (IdISBa), 07120 Palma, Spain
| | - Saioa Gomez-Zorita
- Nutrition and Obesity Group, Department of Nutrition and Food Science, University of the Basque Country (UPV/EHU) and Lucio Lascaray Research Institute, 48940 Vitoria, Spain;
| | | | - Nathalie Boulet
- Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Team 1, 31432 Toulouse, France; (N.B.); (J.F.)
- I2MC, University of Toulouse, UMR1048, Paul Sabatier University, 31432 Toulouse, France
| | - Jessica Fontaine
- Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Team 1, 31432 Toulouse, France; (N.B.); (J.F.)
- I2MC, University of Toulouse, UMR1048, Paul Sabatier University, 31432 Toulouse, France
| | - Mari Carmen Iglesias-Osma
- Laboratory of Neuroendocrinology, Institute of Neurosciences of Castilla y León (INCyL), University of Salamanca, 37007 Salamanca, Spain; (M.C.I.-O.); (M.J.G.-B.)
- Laboratory of Neuroendocrinology and Obesity, Institute of Biomedical Research of Salamanca (IBSAL), University of Salamanca, 37007 Salamanca, Spain
- Department of Physiology and Pharmacology, Faculty of Medicine, University of Salamanca, 37007 Salamanca, Spain
| | - Maria José Garcia-Barrado
- Laboratory of Neuroendocrinology, Institute of Neurosciences of Castilla y León (INCyL), University of Salamanca, 37007 Salamanca, Spain; (M.C.I.-O.); (M.J.G.-B.)
- Laboratory of Neuroendocrinology and Obesity, Institute of Biomedical Research of Salamanca (IBSAL), University of Salamanca, 37007 Salamanca, Spain
- Department of Physiology and Pharmacology, Faculty of Medicine, University of Salamanca, 37007 Salamanca, Spain
| |
Collapse
|
13
|
Veber R, Galezowsk A, Colboc H, Fontaine J, Forasassi C, Pagni O, Fremcourt B, Meaume S. Hématome disséquant chez la personne âgée : étude rétrospective monocentrique de 35 cas. Ann Dermatol Venereol 2019. [DOI: 10.1016/j.annder.2019.09.018] [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: 11/15/2022]
|
14
|
Bolusset O, Fontaine J, Retif P, Quétin P. 4 Complexity metrics combination to optimize the pre-treatment quality assurance for IMRT and VMAT plans. Phys Med 2019. [DOI: 10.1016/j.ejmp.2019.09.085] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
|
15
|
Yang GQ, Mhaskar R, Rishi A, Naghavi AO, Frakes JM, Almhanna K, Fontaine J, Pimiento JM, Hoffe SE. Intensity-modulated radiotherapy at high-volume centers improves survival in patients with esophageal adenocarcinoma receiving trimodality therapy. Dis Esophagus 2019; 32:5267102. [PMID: 30597022 DOI: 10.1093/dote/doy124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 05/24/2018] [Revised: 10/30/2018] [Accepted: 11/29/2018] [Indexed: 12/11/2022]
Abstract
The standard of care trimodality therapy for resectable locally advanced esophageal adenocarcinoma is complex and necessitates multidisciplinary care and expertise. In this work, it is hypothesized that facility clinical volume and utilization of intensity-modulated radiotherapy (IMRT) may influence outcomes. The National Cancer Data Base was queried for patients with cT1-4-N0-3 M0 esophageal adenocarcinoma undergoing trimodality therapy from 2004 to 2013 (n = 2445). All patients received chemoradiation followed by esophagectomy at a Commission on Cancer facility. The facility volume was categorized into tertiles: high-volume centers (HVCs) in the highest 25th percentile of cases per year, intermediate-volume centers (IVCs) with the next highest 25th percentile of cases, and low- and very low-volume centers (LVCs) in the lowest 50th percentile. Overall survival (OS) was estimated using Kaplan-Meier methods and Cox proportional hazard regression. Propensity score matching to balance patient characteristics between volume centers was performed. Subgroup analysis was done comparing IMRT versus 3D conformal radiotherapy. The median follow-up was 26 months. Treatment at an HVC (hazard ratio 0.63, 95% CI 0.49-0.81, P < 0.001) was found to be independently associated with improved overall survival in multivariable analysis. Three-year OS was 58.4%, 46.2%, and 47.5% for HVCs, IVCs, and LVCs, respectively (P < 0.001). Patients at HVCs were more likely to receive IMRT over 3D chemoradiation (CRT; OR 3.45, 95% CI 2.4-5.0, P < 0.001). Patients treated using IMRT at HVCs had improved OS compared to those treated at IVCs or LVCs (HR 0.68, 95% CI 0.52-0.90, P < 0.01), while patients treated with 3D CRT at HVCs had no survival advantage over those at IVCs or LVCs (P = 0.28). Patients with locally advanced esophageal adenocarcinoma treated with IMRT and at HVCs appear to have improved survival.
Collapse
Affiliation(s)
- G Q Yang
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - R Mhaskar
- Center for Evidence Based Medicine and Health Outcomes Research, University of South Florida Morsani College of Medicine, Tampa, Florida, USA
| | - A Rishi
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - A O Naghavi
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - J M Frakes
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - K Almhanna
- Department of Hematology/Oncology, The warren Alpert Medical School of Brown university, Providence, USA
| | - J Fontaine
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Jose M Pimiento
- Department of Gastrointestinal Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - Sarah E Hoffe
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| |
Collapse
|
16
|
Bommier C, Mauduit C, Fontaine J, Bourbon E, Sujobert P, Huet S, Baseggio L, Hayette S, Laurent C, Bachy E, Ghesquières H, Salles G, Traverse-Glehen A. ONE-YEAR REAL-LIFE TARGETED NEXT GENERATION SEQUENCING FOR LYMPHOMA DIAGNOSIS: STUDY OF PATIENTS FROM THE FRENCH LYMPHOMA NETWORK IN RHÔNE-ALPES. Hematol Oncol 2019. [DOI: 10.1002/hon.2630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- C. Bommier
- Haematology Department; Assistance Publique - Hôpitaux de Paris; Paris France
| | - C. Mauduit
- Pathology Department; Hospices Civils de Lyon; Pierre-Bénite France
| | - J. Fontaine
- Pathology Department; Hospices Civils de Lyon; Pierre-Bénite France
| | - E. Bourbon
- Pathology Department; Hospices Civils de Lyon; Pierre-Bénite France
| | - P. Sujobert
- Laboratory of Haematology; Hospices Civils de Lyon; Pierre-Bénite France
| | - S. Huet
- Laboratory of Haematology; Hospices Civils de Lyon; Pierre-Bénite France
| | - L. Baseggio
- Laboratory of Haematology; Hospices Civils de Lyon; Pierre-Bénite France
| | - S. Hayette
- Laboratory of Haematology; Hospices Civils de Lyon; Pierre-Bénite France
| | - C. Laurent
- Pathology Department; Institut Universitaire du Cancer - Oncopôle; Toulouse France
| | - E. Bachy
- Haematology Department; Hospices Civils de Lyon; Pierre-Bénite France
| | - H. Ghesquières
- Haematology Department; Hospices Civils de Lyon; Pierre-Bénite France
| | - G. Salles
- Haematology Department; Hospices Civils de Lyon; Pierre-Bénite France
| | | |
Collapse
|
17
|
|
18
|
Rishi A, Song E, Zhang G, Latifi K, Eaford I, Mviera A, Pimiento J, Fontaine J, Moros E, Harrison L, Hoffe S, Frakes J. Integrated CT and 18F-FDG PET Based Radiomic Prediction Models for Pathological Response and Outcome in Esophageal Cancer Patients Treated with Neoadjuvant Chemoradiotherapy and Esophagectomy. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.542] [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]
|
19
|
Meglouli H, Lounès-Hadj Sahraoui A, Magnin-Robert M, Tisserant B, Hijri M, Fontaine J. Arbuscular mycorrhizal inoculum sources influence bacterial, archaeal, and fungal communities' structures of historically dioxin/furan-contaminated soil but not the pollutant dissipation rate. Mycorrhiza 2018; 28:635-650. [PMID: 29987429 DOI: 10.1007/s00572-018-0852-x] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 06/27/2018] [Indexed: 05/18/2023]
Abstract
Little is known about the influence of arbuscular mycorrhizal fungi (AMF) inoculum sources on phytoremediation efficiency. Therefore, the aim of this study was to compare the effects of two mycorrhizal inocula (indigenous and commercial inocula) in association with alfalfa and tall fescue on the plant growth, the bacterial, fungal, and archaeal communities, and on the removal of dioxin/furan (PCDD/F) from a historically polluted soil after 24 weeks of culture in microcosms. Our results showed that both mycorrhizal indigenous and commercial inocula were able to colonize plant roots, and the growth response depends on the AMF inoculum. Nevertheless, the improvement of root dry weight in inoculated alfalfa with indigenous inoculum and in inoculated tall fescue with commercial inoculum was clearly correlated with the highest mycorrhizal colonization of the roots in both plant species. The highest shoot dry weight was obtained in inoculated alfalfa and tall fescue with the commercial inoculum. AMF inoculation differently affected the number of bacterial and archaeal OTUs and bacterial diversity, with elevated bacterial and archaeal OTUs and bacterial diversity observed with indigenous inoculum. Mycorrhizal inoculation increases the abundance of bacterial OTUs (in particular with indigenous inoculum) and microbial richness but it does not improve PCDD/F dissipation. Vegetation had no effect on the abundance of microbial OTUs nor on richness but stimulated specific communities (Planctomycetia and Gammaproteobacteria) likely to be involved in the dissipation of PCDD/F. The reduction of toxic equivalency PCDD/F concentration also could be explained by the stimulation of soil microbial activities estimated with dehydrogenase and fluorescein diacetate hydrolase.
Collapse
Affiliation(s)
- H Meglouli
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais, France
| | - A Lounès-Hadj Sahraoui
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais, France
| | - M Magnin-Robert
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais, France
| | - B Tisserant
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais, France
| | - M Hijri
- Institut de Recherche en Biologie Végétale, Département de Sciences Biologiques, Université de Montréal, Montréal, QC, Canada
| | - J Fontaine
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais, France.
| |
Collapse
|
20
|
Gerard R, Nguyen D, Velez-Cubian F, Amaral M, Moodie C, Garrett J, Fontaine J, Toloza E. PD.2.04 Effect of Nodal Skip Metastasis on Outcomes after Robotic-Assisted Pulmonary Lobectomy for Primary Lung Cancer. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.07.036] [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: 11/26/2022]
|
21
|
Zhang S, Harris J, Boyle T, Williams C, Antonia S, Chiappori A, Gray J, Tanvetyanon T, Creelan B, Haura E, Shafique M, Fontaine J, Cox J, Kaszuba F, Keenan R, Nair V, Toloza E. P09 Comparison of Liquid Biopsy and Histopathologic Results with Clinical Outcomes in Non–Small Cell Lung Cancer Patients. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.07.048] [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: 10/28/2022]
|
22
|
Cubuk ED, Ivancic RJS, Schoenholz SS, Strickland DJ, Basu A, Davidson ZS, Fontaine J, Hor JL, Huang YR, Jiang Y, Keim NC, Koshigan KD, Lefever JA, Liu T, Ma XG, Magagnosc DJ, Morrow E, Ortiz CP, Rieser JM, Shavit A, Still T, Xu Y, Zhang Y, Nordstrom KN, Arratia PE, Carpick RW, Durian DJ, Fakhraai Z, Jerolmack DJ, Lee D, Li J, Riggleman R, Turner KT, Yodh AG, Gianola DS, Liu AJ. Structure-property relationships from universal signatures of plasticity in disordered solids. Science 2018; 358:1033-1037. [PMID: 29170231 DOI: 10.1126/science.aai8830] [Citation(s) in RCA: 161] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 03/15/2017] [Accepted: 10/18/2017] [Indexed: 11/02/2022]
Abstract
When deformed beyond their elastic limits, crystalline solids flow plastically via particle rearrangements localized around structural defects. Disordered solids also flow, but without obvious structural defects. We link structure to plasticity in disordered solids via a microscopic structural quantity, "softness," designed by machine learning to be maximally predictive of rearrangements. Experimental results and computations enabled us to measure the spatial correlations and strain response of softness, as well as two measures of plasticity: the size of rearrangements and the yield strain. All four quantities maintained remarkable commonality in their values for disordered packings of objects ranging from atoms to grains, spanning seven orders of magnitude in diameter and 13 orders of magnitude in elastic modulus. These commonalities link the spatial correlations and strain response of softness to rearrangement size and yield strain, respectively.
Collapse
Affiliation(s)
- E D Cubuk
- Google Brain, Mountain View, CA 94043, USA
| | - R J S Ivancic
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - S S Schoenholz
- Google Brain, Mountain View, CA 94043, USA.,Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - D J Strickland
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - A Basu
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Z S Davidson
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - J Fontaine
- Laboratoire de Tribologie et Dynamique des Systémes, École Centrale de Lyon, CNRS UMR 5513, Université de Lyon, 69134 Ecully Cedex, France
| | - J L Hor
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Y-R Huang
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Y Jiang
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - N C Keim
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104, USA.,Physics Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA
| | - K D Koshigan
- Laboratoire de Tribologie et Dynamique des Systémes, École Centrale de Lyon, CNRS UMR 5513, Université de Lyon, 69134 Ecully Cedex, France
| | - J A Lefever
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - T Liu
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - X-G Ma
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA.,Complex Assemblies of Soft Matter, CNRS-Solvay-UPenn UMI 3254, Bristol, PA 19007, USA
| | - D J Magagnosc
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - E Morrow
- Department of Physics, Houghton College, Houghton, NY 14744, USA
| | - C P Ortiz
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - J M Rieser
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - A Shavit
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - T Still
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Y Xu
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Y Zhang
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - K N Nordstrom
- Department of Physics, Mount Holyoke College, South Hadley, MA 01075, USA
| | - P E Arratia
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - R W Carpick
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - D J Durian
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Z Fakhraai
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - D J Jerolmack
- Department of Earth and Environmental Sciences, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Ju Li
- Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - R Riggleman
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - K T Turner
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - A G Yodh
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - D S Gianola
- Materials Department, University of California, Santa Barbara, CA 93106, USA.
| | - Andrea J Liu
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA.
| |
Collapse
|
23
|
García-Sánchez T, Merla C, Fontaine J, Muscat A, Mir LM. Sine wave electropermeabilization reveals the frequency-dependent response of the biological membranes. Biochim Biophys Acta Biomembr 2018; 1860:1022-1034. [PMID: 29410049 DOI: 10.1016/j.bbamem.2018.01.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 01/16/2018] [Accepted: 01/22/2018] [Indexed: 01/25/2023]
Abstract
The permeabilization of biological membranes by electric fields, known as electroporation, has been traditionally performed with square electric pulses. These signals distribute the energy applied to cells in a wide frequency band. This paper investigates the use of sine waves, which are narrow band signals, to provoke electropermeabilization and the frequency dependence of this phenomenon. Single bursts of sine waves at different frequencies in the range from 8 kHz-130 kHz were applied to cells in vitro. Electroporation was studied in the plasma membrane and the internal organelles membrane using calcium as a permeabilization marker. Additionally, a double-shell electrical model was simulated to give a theoretical framework to our results. The electroporation efficiency shows a low pass filter frequency dependence for both the plasma membrane and the internal organelles membrane. The mismatch between the theoretical response and the observed behavior for the internal organelles membrane is explained by a two-step permeabilization process: first the permeabilization of the external membrane and afterwards that of the internal membranes. The simulations in the model confirm this two-step hypothesis when a variable plasma membrane conductivity is considered in the analysis. This study demonstrates how the use of narrow-band signals as sine waves is a suitable method to perform electroporation in a controlled manner. We suggest that the use of this type of signals could bring a simplification in the investigations of the very complex phenomenon of electroporation, thus representing an interesting option in future fundamental studies.
Collapse
Affiliation(s)
- Tomás García-Sánchez
- Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ. Paris-Sud, Gustave Roussy, Université Paris-Saclay, 94805 Villejuif, France.
| | - Caterina Merla
- Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ. Paris-Sud, Gustave Roussy, Université Paris-Saclay, 94805 Villejuif, France
| | - Jessica Fontaine
- Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ. Paris-Sud, Gustave Roussy, Université Paris-Saclay, 94805 Villejuif, France
| | - Adeline Muscat
- Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ. Paris-Sud, Gustave Roussy, Université Paris-Saclay, 94805 Villejuif, France
| | - Lluis M Mir
- Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ. Paris-Sud, Gustave Roussy, Université Paris-Saclay, 94805 Villejuif, France
| |
Collapse
|
24
|
Yang G, Mhaskar R, Naghavi A, Frakes J, Almhanna K, Fontaine J, Pimiento J, Hoffe S. Effects of Facility Volume on Pathologic Complete Response and Overall Survival in Patients With Esophageal Adenocarcinoma Receiving Trimodality Therapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1082] [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: 12/01/2022]
|
25
|
Duval C, Fontaine J, Gazzo S, Desormaux P, Sujobert P, Mosnier I, Durieux E, Ghesquieres H, Sarkozy C, Isaac S, Traverse-Glehen A. Réarrangement du gène MYC et lymphomes B à grandes cellules : quand ? comment ? Ann Pathol 2017. [DOI: 10.1016/j.annpat.2017.06.023] [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: 10/19/2022]
|
26
|
Hassane M, Demon D, Soulard D, Fontaine J, Keller LE, Patin EC, Porte R, Prinz I, Ryffel B, Kadioglu A, Veening JW, Sirard JC, Faveeuw C, Lamkanfi M, Trottein F, Paget C. Neutrophilic NLRP3 inflammasome-dependent IL-1β secretion regulates the γδT17 cell response in respiratory bacterial infections. Mucosal Immunol 2017; 10:1056-1068. [PMID: 28051086 DOI: 10.1038/mi.2016.113] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 10/24/2016] [Indexed: 02/04/2023]
Abstract
Traditionally regarded as simple foot soldiers of the innate immune response limited to the eradication of pathogens, neutrophils recently emerged as more complex cells endowed with a set of immunoregulatory functions. Using a model of invasive pneumococcal disease, we highlighted an unexpected key role for neutrophils as accessory cells in innate interleukin (IL)-17A production by lung resident Vγ6Vδ1+ T cells via nucleotide-binding oligomerization domain receptor, pyrin-containing 3 (NLRP3) inflammasome-dependent IL-1β secretion. In vivo activation of the NLRP3 inflammasome in neutrophils required both host-derived and bacterial-derived signals. Elaborately, it relies on (i) alveolar macrophage-secreted TNF-α for priming and (ii) subsequent exposure to bacterial pneumolysin for activation. Interestingly, this mechanism can be translated to human neutrophils. Our work revealed the cellular and molecular dynamic events leading to γδT17 cell activation, and highlighted for the first time the existence of a fully functional NLRP3 inflammasome in lung neutrophils. This immune axis thus regulates the development of a protective host response to respiratory bacterial infections.
Collapse
Affiliation(s)
- M Hassane
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France.,Laboratoire Microbiologie Santé et Environnement, Ecole doctorale en Sciences et Technologies/ Faculté de Santé Publique, Université Libanaise, Tripoli, Liban
| | - D Demon
- Inflammation Research Center, VIB, Zwijnaarde, Belgium.,Department of Internal Medicine, Ghent University, Ghent, Belgium
| | - D Soulard
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - J Fontaine
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - L E Keller
- Molecular Genetics Group, Groningen Biomolecular Sciences and Biotechnology Institute, Centre for Synthetic Biology, University of Groningen, Groningen, The Netherlands
| | - E C Patin
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - R Porte
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - I Prinz
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - B Ryffel
- CNRS, UMR7355, Experimental and Molecular Immunology and Neurogenetics, University, Orléans, France and IDM, University of Cape Town, RSA
| | - A Kadioglu
- Department of Clinical Infection, Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
| | - J-W Veening
- Molecular Genetics Group, Groningen Biomolecular Sciences and Biotechnology Institute, Centre for Synthetic Biology, University of Groningen, Groningen, The Netherlands
| | - J-C Sirard
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - C Faveeuw
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - M Lamkanfi
- Inflammation Research Center, VIB, Zwijnaarde, Belgium.,Department of Internal Medicine, Ghent University, Ghent, Belgium
| | - F Trottein
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - C Paget
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| |
Collapse
|
27
|
Glover J, Reynolds S, Echavarria M, Ng E, Velez-Cubian F, Moodie C, Garrett J, Fontaine J, Toloza E. P178 Smoking history as a risk factor for atrial fibrillation following robotic-assisted video-thoracoscopic pulmonary lobectomy. Chest 2017. [DOI: 10.1016/j.chest.2017.04.081] [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: 11/12/2022] Open
|
28
|
Groshev A, Velez-Cubian F, Gerard R, Toosi K, Moodie C, Garrett J, Fontaine J, Toloza E. P189 Perioperative outcomes after robotic-assisted pulmonary lobectomy for upper versus lower lobe lung malignancies. Chest 2017. [DOI: 10.1016/j.chest.2017.04.092] [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: 10/19/2022] Open
|
29
|
Groshev A, Velez-Cubian F, Gerard R, Toosi K, Moodie C, Garrett J, Fontaine J, Toloza E. P179 Outcomes for right versus left lung malignancies after robotic-assisted pulmonary lobectomy. Chest 2017. [DOI: 10.1016/j.chest.2017.04.082] [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: 11/17/2022] Open
|
30
|
Reynolds S, Glover J, Echavarria M, Ng E, Velez-Cubian F, Moodie C, Garrett J, Fontaine J, Toloza E. P187 Diabetes predisposes patients to atrial fibrillation after robotic-assisted video-thoracoscopic pulmonary lobectomy. Chest 2017. [DOI: 10.1016/j.chest.2017.04.090] [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: 11/29/2022] Open
|
31
|
Reynolds S, Glover J, Echavarria M, Ng E, Velez-Cubian F, Moodie C, Garrett J, Fontaine J, Toloza E. Diabetes predisposes patients to atrial fibrillation after robotic-assisted video-thoracoscopic pulmonary lobectomy. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx085.005] [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: 11/12/2022] Open
|
32
|
Glover J, Reynolds S, Ng E, Echavarria M, Velez-Cubian F, Moodie C, Garrett J, Fontaine J, Toloza E. Effect of age on risk for atrial fibrillation following robotic-assisted video-thoracoscopic pulmonary lobectomy. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx085.008] [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: 11/12/2022] Open
|
33
|
Glover J, Reynolds S, Echavarria M, Ng E, Velez-Cubian F, Moodie C, Garrett J, Fontaine J, Toloza E. Smoking history as a risk factor for atrial fibrillation following robotic-assisted video-thoracoscopic pulmonary lobectomy. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx085.006] [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: 11/14/2022] Open
|
34
|
Fontaine J, Delpon G, Chiavassa S, Pin A, Dudouet P, Franck D, Boutry C. 31. Machine and patient quality controls by portal imaging using independent software. Phys Med 2016. [DOI: 10.1016/j.ejmp.2016.11.083] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
35
|
Mustafa G, Randoux B, Tisserant B, Fontaine J, Magnin-Robert M, Lounès-Hadj Sahraoui A, Reignault P. Phosphorus supply, arbuscular mycorrhizal fungal species, and plant genotype impact on the protective efficacy of mycorrhizal inoculation against wheat powdery mildew. Mycorrhiza 2016; 26:685-697. [PMID: 27130314 DOI: 10.1007/s00572-016-0698-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 04/06/2016] [Indexed: 06/05/2023]
Abstract
A potential alternative strategy to chemical control of plant diseases could be the stimulation of plant defense by arbuscular mycorrhizal fungi (AMF). In the present study, the influence of three parameters (phosphorus supply, mycorrhizal inoculation, and wheat cultivar) on AMF protective efficiency against Blumeria graminis f. sp. tritici, responsible for powdery mildew, was investigated under controlled conditions. A 5-fold reduction (P/5) in the level of phosphorus supply commonly recommended for wheat in France improved Funneliformis mosseae colonization and promoted protection against B. graminis f. sp. tritici in a more susceptible wheat cultivar. However, a further decrease in P affected plant growth, even under mycorrhizal conditions. Two commercially available AMF inocula (F. mosseae, Solrize®) and one laboratory inoculum (Rhizophagus irregularis) were tested for mycorrhizal development and protection against B. graminis f. sp. tritici of two moderately susceptible and resistant wheat cultivars at P/5. Mycorrhizal levels were the highest with F. mosseae (38 %), followed by R. irregularis (19 %) and Solrize® (SZE, 8 %). On the other hand, the highest protection level against B. graminis f. sp. tritici was obtained with F. mosseae (74 %), followed by SZE (58 %) and R. irregularis (34 %), suggesting that inoculum type rather than mycorrhizal levels determines the protection level of wheat against B. graminis f. sp. tritici. The mycorrhizal protective effect was associated with a reduction in the number of conidia with haustorium and with an accumulation of polyphenolic compounds at B. graminis f. sp. tritici infection sites. Both the moderately susceptible and the most resistant wheat cultivar were protected against B. graminis f. sp. tritici infection by F. mosseae inoculation at P/5, although the underlying mechanisms appear rather different between the two cultivars. This study emphasizes the importance of taking into account the considered parameters when considering the use of AMF as biocontrol agents.
Collapse
Affiliation(s)
- G Mustafa
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais Cedex, France
| | - B Randoux
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais Cedex, France
| | - B Tisserant
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais Cedex, France
| | - J Fontaine
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais Cedex, France
| | - M Magnin-Robert
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais Cedex, France
| | - A Lounès-Hadj Sahraoui
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais Cedex, France.
| | - Ph Reignault
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale, SFR Condorcet FR CNRS 3417, 50, Rue Ferdinand Buisson, 62228, Calais Cedex, France
| |
Collapse
|
36
|
Debarbieux S, Perrot JL, Cinotti E, Labeille B, Fontaine J, Douchet C, Balme B, Thomas L. Reflectance confocal microscopy of Pigmented Bowen's disease: misleading dendritic cells. Skin Res Technol 2016; 23:126-128. [DOI: 10.1111/srt.12304] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2016] [Indexed: 11/30/2022]
Affiliation(s)
- S. Debarbieux
- Dermatology Department; Centre Hospitalier Lyon Sud; Pierre-Bénite France
| | - J. L. Perrot
- Dermatology Department; Hôpital Nord; Saint Etienne France
| | - E. Cinotti
- Dermatology Department; Hôpital Nord; Saint Etienne France
| | - B. Labeille
- Dermatology Department; Hôpital Nord; Saint Etienne France
| | - J. Fontaine
- Pathology Department; Centre Hospitalier Lyon Sud; Pierre-Bénite France
| | - C. Douchet
- Pathology Department; Hôpital Nord; Saint Etienne France
| | - B. Balme
- Pathology Department; Centre Hospitalier Lyon Sud; Pierre-Bénite France
| | - L. Thomas
- Dermatology Department; Centre Hospitalier Lyon Sud; Pierre-Bénite France
| |
Collapse
|
37
|
Moignier C, Huet C, Barraux V, Fontaine J, Loiseau C, Sebe-Mercier K, Batalla A, Makovicka L. Development of a protocol for small beam bi-dimensional dose distribution measurements with radiochromic films. RADIAT MEAS 2016. [DOI: 10.1016/j.radmeas.2016.03.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
38
|
Villeneuve L, Thivolet A, Bakrin N, Mohamed F, Isaac S, Valette PJ, Glehen O, Rousset P, Abba J, Abboud K, Arvieux C, Balagué G, Barrau V, Rejeb H, Bereder JM, Bibeau F, Bouzard D, Brigand C, Carrère S, Carretier M, de Chaisemartin C, Chassang M, Chevallier A, Courvoisier T, Dartigues P, Delroeux D, Desolneux G, Dohan A, Dromain C, Dumont F, Durand-Fontanier S, Elias D, Eveno C, Evrard S, Fay O, Ferron G, Geffroy D, Gilly FN, Fontaine J, Goasguen N, Ghouti L, Goéré D, Guilloit JM, Guyon F, Heyd B, Kaci R, Karoui M, Kianmanesh R, Labbé C, Lacroix J, Lang-Averous G, Laverriere MH, Lefevre J, Lelong B, Leroux A, Dico R, Loi V, Lorimier G, Marchal F, Mariani A, Mariani P, Mariette C, Meeus P, Mery E, Messager M, Msika S, Nadeau C, Ortega-Deballon P, Passot G, Petorin C, Peyrat P, Pezet D, Piessen G, Pirro N, Pocard M, Poizat F, Porcheron J, Pourcher G, Quenet F, Rat P, Regimbeau JM, Rousselot P, Sabbagh C, Svrcek M, Tetreau R, Thibaudeau E, Tuech JJ, Valmary-Degano S, Vaudoyer D, Velasco S, Verriele-Beurrier V, Wernert R, Zinzindohoue F. A new internet tool to report peritoneal malignancy extent. PeRitOneal MalIgnancy Stage Evaluation (PROMISE) application. Eur J Surg Oncol 2016; 42:877-82. [DOI: 10.1016/j.ejso.2016.03.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 03/12/2016] [Accepted: 03/16/2016] [Indexed: 11/17/2022] Open
|
39
|
Sridhar S, Brouqui P, Fontaine J, Perivier I, Ruscassier P, Gautret P, Régner I. Risk perceptions of MSF healthcare workers on the recent Ebola epidemic in West Africa. New Microbes New Infect 2016; 12:61-8. [PMID: 27330816 PMCID: PMC4900694 DOI: 10.1016/j.nmni.2016.04.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 04/19/2016] [Accepted: 04/28/2016] [Indexed: 11/30/2022] Open
Abstract
Healthcare workers (HCW) in general are considered to be at high risk during epidemics. Their training for Ebola provided by Médecins sans frontières (MSF) is presently based on imparting factual information, which does not necessarily translate into knowledge or appropriate practices. We aimed to understand the importance of risk perception during training. A total of 130 MSF-trained HCW traveling to Africa during the Ebola epidemic of 2014–2015 participated in this longitudinal cohort study. Their baseline knowledge was good but did not significantly increase after training except for minor symptoms, case fatality rate and wearing personal protective equipment as a preventive measure. Additionally, they underestimated their likelihood for contracting Ebola compared to their colleagues of same age and sex, and despite their high-risk status, they showed little concern about contracting Ebola during their mission. Our findings suggest that the use of individualized risk feedback during training in appraising erroneous perceptions will increase adherence to preventive measures.
Collapse
Affiliation(s)
- S. Sridhar
- Aix Marseille University, Emerging Tropical and Infectious Diseases Unit (URMITE), Faculty of Medicine, Marseille, France
- Assistance Publique Hôpitaux de Marseille, Institut Hospitalo Universitaire Méditerranée Infection, Marseille, France
| | - P. Brouqui
- Aix Marseille University, Emerging Tropical and Infectious Diseases Unit (URMITE), Faculty of Medicine, Marseille, France
- Assistance Publique Hôpitaux de Marseille, Institut Hospitalo Universitaire Méditerranée Infection, Marseille, France
| | - J. Fontaine
- Learning Focal Point, Mèdecins Sans Frontière, Brussels, Belgium
| | - I. Perivier
- Learning Focal Point, Mèdecins Sans Frontière, Genève, Switzerland
| | - P. Ruscassier
- Learning Focal Point, Mèdecins Sans Frontière, Genève, Switzerland
| | - P. Gautret
- Aix Marseille University, Emerging Tropical and Infectious Diseases Unit (URMITE), Faculty of Medicine, Marseille, France
- Assistance Publique Hôpitaux de Marseille, Institut Hospitalo Universitaire Méditerranée Infection, Marseille, France
| | - I. Régner
- Aix Marseille Université, CNRS, LPC UMR 7290, 13331, Marseille, France
- Corresponding author: I. Régner, Aix Marseille Université, CNRS, LPC UMR 7290, 13331, Marseille, France.Aix Marseille UniversitéCNRSLPC UMR 7290Marseille13331France
| |
Collapse
|
40
|
Boutry C, Delpon G, Fontaine J, Dudouet P, Franck D. EP-1574: EpiDream: “All-in-One” model for EPID based quality controls. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32824-9] [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: 10/21/2022]
|
41
|
Hairaye C, Mermet F, Engel T, Montgomery PC, Fontaine J. Functionalization of surfaces by ultrafast laser micro/nano structuring. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/558/1/012063] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
42
|
Duong TA, Canoui-Poitrine F, Boudjemil S, Begon E, Carlotti A, Kosseian-Bal I, Fontaine J, Zehou O, Chosidow O, Wolkenstein P, Espinoza P. Apprentissage de la télédermatologie : évolution des indicateurs de processus. Étude TELDERM 1. Ann Dermatol Venereol 2014. [DOI: 10.1016/j.annder.2014.09.180] [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]
|
43
|
Huet C, Moignier C, Fontaine J, Clairand I. Characterization of the gafchromic EBT3 films for dose distribution measurements in stereotactic radiotherapy. RADIAT MEAS 2014. [DOI: 10.1016/j.radmeas.2014.05.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
44
|
Mustafa G, Tisserant B, Randoux B, Fontaine J, Sahraoui ALH, Reignault P. MECHANISMS INVOLVED IN MYCORRHIZAL WHEAT PROTECTION AGAINST POWDERY MILDEW. Commun Agric Appl Biol Sci 2014; 79:403-410. [PMID: 26080475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In France, the Ecophyto 2018 national action plan will set out to reduce the use of pesticides by 50% by 2018, if possible. To achieve this goal, the use of arbuscular mycorrhizal (AM) fungi could be a potential alternative method allowing the control of crop diseases. The inoculation by AM fungi has been demonstrated to protect plants against soil-borne pathogens, but little is known about their effectiveness against aerial pathogens, such as the biotrophic fungus Blumeria graminis f.sp. tritici (Bgt) causing wheat (Triticum aestivum) powdery mildew. In the present study, wheat plants were grown in pots, under controlled conditions. Using various phosphorus (P) concentrations, the effectiveness of three AM inocula (Rhizophagus irregularis (Ri), Funneliformis mosseae (Fm)) and Solrize, a mixture of Ri and Fm) in Orvantis wheat cultivar, were tested. After 42 days of culture, mycorrhizal (M) and non-mycorrhizal (NM) wheat plants were infected by Bgt. A satisfactory mycorrhizal rate was obtained with the phosphorus concentration P/5 (P corresponding to the dose used in wheat fields in = 62 mg/L). Our work shows, for the first time, (i) a protective effect of AM inoculation against wheat powdery mildew, reaching up to 73% with Fm inocula, and (ii) its ability to induce a systemic resistance in wheat. Thereafter, we investigated mechanisms involved in this protection. Control plants, M plants, infected plants by Bgt, and M-infected plants were compared at: (i) cytological level, our results revealed that papillae and whole-fluorescent cells presence was induced, conversely fungal haustorium formation in epidermal cells was reduced within M plants leaves (ii) enzymatic level-by assessing defense enzyme activities (lipoxygenase, peroxidase) known as defense markers were measured 24, 48, 72 and 96 hours after infection (hai). The importance of these activities in the defense pathways induced in wheat by AM fungi will be discussed.
Collapse
|
45
|
Bonfrate A, Farah J, De Marzi L, Delacroix S, Fontaine J, Hérault J, Sayah R, Trompier F, Lee C, Bolch W, Clairand I. Secondary doses to healthy tissues during proton therapy treatments: influence of irradiation parameters. Phys Med 2014. [DOI: 10.1016/j.ejmp.2014.07.075] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
46
|
Duong T, Boudjemil S, Canoui-Poitrine F, Begon E, Carlotti A, Fontaine J, Kosseian-Bal I, Zehou O, Le Thuaut A, Chosidow O, Wolkenstein P, Espinoza P. Évaluation d’une application internet de téléexpertise en onco-dermatologie : étude TELDERM1. Ann Dermatol Venereol 2013. [DOI: 10.1016/j.annder.2013.09.013] [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]
|
47
|
Boccara O, Fraitag S, Fontaine J, Hamel D, Brunelle F, Lasne D, Orbach D, de Prost Y, Hadj-Rabia S, Bodemer C. Phénomène de Kasabach-Merritt : une série de 24 cas. Ann Dermatol Venereol 2013. [DOI: 10.1016/j.annder.2013.09.151] [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]
|
48
|
Mustafa G, Tisserant B, Randoux B, Fontaine J, Reignault P, Sahraoui ALH. Towards a more sustainable agriculture: wheat mycorrhization to protect against powdery mildew. Commun Agric Appl Biol Sci 2013; 78:467-478. [PMID: 25151822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
One of the means to reduce the use of pesticides, which are harmful for humans and the environment, is the development of alternative methods to control crop diseases. In this context, arbuscular mycorrhizal inoculation possesses a great potential for crop production by a more sustainable agriculture. Our work aims to (i) determine the optimal conditions for wheat mycorrhization (ii) study the impact of arbuscular mycorrhizal inoculation on a foliar disease of wheat, powdery mildew (Blumeria graminis f.sp. tritici, Bgt), (iii) evaluate the stimulation of natural defences of wheat (Triticuma estivum). Therefore, this work consisted firstly of defining the parameters, affecting the establishment of wheat mycorrhization, such as: phosphorus concentration (62, 12.5, 6.2 mg/L), culture time (4, 5, 6, 7 weeks), arbuscular mycorrhizal species used as an inoculum (Rhizophagus irregularis (Ri), Glomus masseae (Gm) and the mixture of (Ri+Gm)) and wheat cultivars (Orvantis and Lord, sensitive and moderately resistant to Bgt, respectively). Secondly, the protective effect of mycorrhizal inoculation against Bgt was estimated by comparing infection rates of wheat seedlings subjected and non-subjected to AMF. Finally, to better understand the biochemical mechanisms involved in the protection, two enzymatic activities described as defense markers [lipoxygenase (LOX) and peroxidase (POX)] were also assessed. Extensive mycorrhization (about 31%) was obtained at P/5 concentration (12.5 mg/L) when wheat plants were 6 weeks old. The highest colonization rate was obtained when wheat was inoculated with Gm compared to SZE and Ri. The higher resistance level of Lord wheat cultivar against Bgt did not affect the mycorrhizal rate compared to the more susceptible cultivar Orvantis. Our work showed a significant protection level in mycorrhizal (M) wheat plants against Bgt, estimated to about 25 and 43% with Ri and SZE respectively compared to non-mycorrhizal (NM) Orvantis plants. The protection levels percent's were about 30 and 64% for Lord plants. The protection was higher for Lord than Orvantis and seems to depend on the resistance degree. These results suggest the induction of a systemic resistance by mycorrhizal inoculation. Our results showed an increase of both activities (LOX and POX) in wheat infected by Bgt for both (M) and (NM) plants by the inoculum SZE (Ri+Gm) at P/5 phosphorus concentration.
Collapse
|
49
|
Belova S, Wilhelm S, Linek M, Beco L, Fontaine J, Bergvall K, Favrot C. Factors affecting allergen-specific IgE serum levels in cats. Can J Vet Res 2012; 76:45-51. [PMID: 22754094 PMCID: PMC3244287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Accepted: 03/23/2011] [Indexed: 06/01/2023]
Abstract
Pruritic skin diseases are common in cats and demand rigorous diagnostic workup for finding an underlying etiology. Measurement of a serum allergen-specific IgE in a pruritic cat is often used to make or confirm the diagnosis of a skin hypersensitivity disease, although current evidence suggests that elevated allergen-specific IgE do not always correlate with a clinical disease and vice versa. The aim of the study was to to assess the possible influence of age, deworming status, lifestyle, flea treatment, and gender on allergen-specific IgE levels and to evaluate the reliability of IgE testing in predicting the final diagnosis of a pruritic cat. For this purpose sera of 179 cats with pruritus of different causes and 20 healthy cats were evaluated for allergen-specific IgE against environmental, food and flea allergens using the Fc-epsilon receptor based enzyme-linked immunosorbent assay (ELISA) test. The results of the study showed positive correlation between age, outdoor life style, absence of deworming, absence of flea control measures and levels of allergen-specific IgE. Gender and living area (urban versus rural) did not seem to affect the formation of allergen-specific IgE. According to these findings, evaluating allergen-specific IgE levels, is not a reliable test to diagnose hypersensitivity to food or environmental allergens in cats. On the contrary, this test can be successfully used for diagnosing feline flea bite hypersensitivity.
Collapse
Affiliation(s)
| | | | | | | | | | | | - C. Favrot
- Address all correspondence to Dr. C. Favrot; telephone: (41) 446358375; fax: (41) 44638920; e-mail:
| |
Collapse
|
50
|
Agarwal A, Padmalingam M, Mohan R, Banifatemi R, Fontaine J, Hankins S, Eisen H, Plehn J. 464 Systolic Augmentation of Continuous Aortic Regurgitation: A Novel Marker of Increased Fractional Shortening and Flow in HeartMate II Supported Patients. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.474] [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] Open
|