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Adjedj J, Picard F, Collet C, Bruneval P, Fournier S, Bize A, Sambin L, Berdeaux A, Varenne O, De Bruyne B, Ghaleh B. Intracoronary Saline-Induced Hyperemia During Coronary Thermodilution Measurements of Absolute Coronary Blood Flow: An Animal Mechanistic Study. J Am Heart Assoc 2020; 9:e015793. [PMID: 32689859 PMCID: PMC7792254 DOI: 10.1161/jaha.120.015793] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Background Absolute hyperemic coronary blood flow and microvascular resistances can be measured by continuous thermodilution with a dedicated infusion catheter. We aimed to determine the mechanisms of this hyperemic response in animal. Methods and Results Twenty open chest pigs were instrumented with flow probes on coronary arteries. The following possible mechanisms of saline‐induced hyperemia were explored compared with maximal hyperemia achieve with adenosine by testing: (1) various infusion rates; (2) various infusion content and temperature; (3) NO production inhibition with L‐arginine methyl ester and endothelial denudation; (4) effects of vibrations generated by rotational atherectomy and of infusion through one end‐hole versus side‐holes. Saline infusion rates of 5, 10 and 15 mL/min did not reach maximal hyperemia as compared with adenosine. Percentage of coronary blood flow expressed in percent of the coronary blood flow after adenosine were 48±17% at baseline, 57±18% at 5 mL/min, 65±17% at 10 mL/min, 82±26% at 15 mL/min and 107±18% at 20 mL/min. Maximal hyperemia was observed during infusion of both saline at body temperature and glucose 5%, after endothelial denudation, l‐arginine methyl ester administration, and after stent implantation. The activation of a Rota burr in the first millimeters of the epicardial artery also induced maximal hyperemia. Maximal hyperemia was achieved by infusion through lateral side‐holes but not through an end‐hole catheter. Conclusions Infusion of saline at 20 mL/min through a catheter with side holes in the first millimeters of the epicardial artery induces maximal hyperemia. The data indicate that this vasodilation is related neither to the composition/temperature of the indicator nor is it endothelial mediated. It is suggested that it could be elicited by epicardial wall vibrations.
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Affiliation(s)
- Julien Adjedj
- Department of Cardiology Institut Arnault Tzanck Saint Laurent du Var France.,Department of Cardiology Lausanne University Center Hospital Lausanne Switzerland.,U955-IMRB Equipe 03 Inserm UPEC Ecole Nationale Vétérinaire d'Alfort Maisons-Alfort France.,Université Paris Est UMR_S955 UPEC Ecole Nationale Vétérinaire d'Alfort Créteil France.,Faculté de Médecine Paris Descartes Université Paris Descartes Paris France
| | - Fabien Picard
- Faculté de Médecine Paris Descartes Université Paris Descartes Paris France.,AP-HP, Hôpital Cochin Paris France
| | - Carlos Collet
- Cardiovascular Center Aalst, OLV Clinic Aalst Belgium
| | - Patrick Bruneval
- UMR 970 Inserm Paris Cardiovascular Research Center Hôpital Européen Georges Pompidou Paris France
| | - Stephane Fournier
- Department of Cardiology Lausanne University Center Hospital Lausanne Switzerland.,Cardiovascular Center Aalst, OLV Clinic Aalst Belgium
| | - Alain Bize
- U955-IMRB Equipe 03 Inserm UPEC Ecole Nationale Vétérinaire d'Alfort Maisons-Alfort France.,Université Paris Est UMR_S955 UPEC Ecole Nationale Vétérinaire d'Alfort Créteil France
| | - Lucien Sambin
- U955-IMRB Equipe 03 Inserm UPEC Ecole Nationale Vétérinaire d'Alfort Maisons-Alfort France.,Université Paris Est UMR_S955 UPEC Ecole Nationale Vétérinaire d'Alfort Créteil France
| | - Alain Berdeaux
- U955-IMRB Equipe 03 Inserm UPEC Ecole Nationale Vétérinaire d'Alfort Maisons-Alfort France.,Université Paris Est UMR_S955 UPEC Ecole Nationale Vétérinaire d'Alfort Créteil France
| | - Olivier Varenne
- Faculté de Médecine Paris Descartes Université Paris Descartes Paris France.,AP-HP, Hôpital Cochin Paris France
| | - Bernard De Bruyne
- Department of Cardiology Lausanne University Center Hospital Lausanne Switzerland.,Cardiovascular Center Aalst, OLV Clinic Aalst Belgium
| | - Bijan Ghaleh
- U955-IMRB Equipe 03 Inserm UPEC Ecole Nationale Vétérinaire d'Alfort Maisons-Alfort France.,Université Paris Est UMR_S955 UPEC Ecole Nationale Vétérinaire d'Alfort Créteil France
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2
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Morin D, Long R, Panel M, Laure L, Taranu A, Gueguen C, Pons S, Leoni V, Caccia C, Vatner SF, Vatner DE, Qiu H, Depre C, Berdeaux A, Ghaleh B. Hsp22 overexpression induces myocardial hypertrophy, senescence and reduced life span through enhanced oxidative stress. Free Radic Biol Med 2019; 137:194-200. [PMID: 31047988 DOI: 10.1016/j.freeradbiomed.2019.04.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 02/05/2019] [Revised: 04/12/2019] [Accepted: 04/26/2019] [Indexed: 10/26/2022]
Abstract
H11 kinase/Hsp22 (Hsp22) is a small heat shock protein, which, when overexpressed cardiac specifically in transgenic (TG) mice, induces stable left ventricular (LV) hypertrophy. Hsp22 also increases oxidative phosphorylation and mitochondrial reactive oxygen species (ROS) production, mechanisms mediating LV hypertrophy, senescence and reduced lifespan. Therefore, we investigated whether ROS production mediates LV hypertrophy, senescence and reduced life span in Hsp22 TG mice. Survival curves revealed that TG mice had a 48% reduction in their mean life span compared to wild type (WT) mice. This was associated with a significant increase in senescence markers, such as p16, p19 mRNA levels as well as the percentage of β-galactosidase positive cells and telomerase activity. Oxidized (GSSG)/reduced (GSH) glutathione ratio, an indicator of oxidative stress, and ROS production from 3 major cellular sources was measured in cardiac tissue. Hearts from TG mice exhibited a decrease in GSH/GSSG ratio together with increased ROS production from all sources. To study the role of ROS, mice were treated with the antioxidant Tempol from weaning to their sacrifice. Chronic Tempol treatment abolished oxidative stress and overproduction of ROS, and reduced myocardial hypertrophy and Akt phosphorylation in TG mice. Tempol also significantly extended life span and prevented aging markers in TG mice. Taken together these results show that overexpression of Hsp22 increases oxidative stress responsible for the induction of hypertrophy and senescence and ultimately reduction in life span.
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Affiliation(s)
- Didier Morin
- U955-IMRB, Equipe 03, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, Créteil, France.
| | - Romain Long
- U955-IMRB, Equipe 03, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, Créteil, France
| | - Mathieu Panel
- U955-IMRB, Equipe 03, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, Créteil, France
| | - Lydie Laure
- U955-IMRB, Equipe 03, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, Créteil, France
| | - Adela Taranu
- U955-IMRB, Equipe 03, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, Créteil, France
| | - Cindy Gueguen
- U955-IMRB, Equipe 03, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, Créteil, France
| | - Sandrine Pons
- U955-IMRB, Equipe 03, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, Créteil, France
| | - Valerio Leoni
- Laboratory Medicine, Desio Hospital, University of Milano Bicocca, Milan, Italy
| | - Claudio Caccia
- Laboratory of Clinical Pathology and Medical Genetics, Institute Neurologico IRCCS Carlo Besta, Milano, Italy
| | - Stephen F Vatner
- Department of Cell Biology and Molecular Medicine, New Jersey Medical School, Rutgers, The State University of New Jersey, USA
| | - Dorothy E Vatner
- Department of Cell Biology and Molecular Medicine, New Jersey Medical School, Rutgers, The State University of New Jersey, USA
| | - Hongyu Qiu
- Department of Cell Biology and Molecular Medicine, New Jersey Medical School, Rutgers, The State University of New Jersey, USA
| | - Christophe Depre
- Department of Cell Biology and Molecular Medicine, New Jersey Medical School, Rutgers, The State University of New Jersey, USA
| | - Alain Berdeaux
- U955-IMRB, Equipe 03, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, Créteil, France
| | - Bijan Ghaleh
- U955-IMRB, Equipe 03, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, Créteil, France
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3
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Tissier R, Hocini H, Tchitchek N, Deye N, Legriel S, Pichon N, Daubin C, Hermine O, Carli P, Vivien B, Tréluyer JM, Lefebvre C, Tisserand P, Dubois-Randé JL, Berdeaux A, Ghaleh B, Lelièvre JD, Levy Y, Cariou A. Early blood transcriptomic signature predicts patients' outcome after out-of-hospital cardiac arrest. Resuscitation 2019; 138:222-232. [PMID: 30885824 DOI: 10.1016/j.resuscitation.2019.03.006] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/27/2019] [Accepted: 03/10/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Early prognostication is a major challenge after out-of-hospital cardiac arrest (OHCA). AIMS We hypothesized that a genome-wide analysis of blood gene expression could offer new prognostic tools and lines of research. METHODS Sixty-nine patients were enrolled from an ancillary study of the clinical trial NCT00999583 that tested the effect of erythropoietin (EPO) after OHCA. Blood samples were collected in comatose survivors of OHCA at hospital admission and 1 and 3 days after resuscitation. Gene expression profiles were analyzed (Illumina HumanHT-12 V4 BeadChip; >34,000 genes). Patients were classified into two categories representing neurological favorable outcome (cerebral performance category [CPC] = 1-2) vs unfavorable outcome (CPC > 2) at Day 60 after OHCA. Differential and functional enrichment analyses were performed to compare transcriptomic profiles between these two categories. RESULTS Among the 69 enrolled patients, 33 and 36 patients were treated or not by EPO, respectively. Among them, 42% had a favorable neurological outcome in both groups. EPO did not affect the transcriptomic response at Day-0 and 1 after OHCA. In contrast, 76 transcripts differed at Day-0 between patients with unfavorable vs favorable neurological outcome. This signature persisted at Day-1 after OHCA. Functional enrichment analysis revealed a down-regulation of adaptive immunity with concomitant up-regulation of innate immunity and inflammation in patients with unfavorable vs favorable neurological outcome. The transcription of many genes of the HLA family was decreased in patients with unfavorable vs favorable neurological outcome. Concomitantly, neutrophil activation and inflammation were observed. Up-stream regulators analysis showed the implication of numerous factors involved in cell cycle and damages. A logistic regression including a set of genes allowed a reliable prediction of the clinical outcomes (specificity = 88%; Hit Rate = 83%). CONCLUSIONS A transcriptomic signature involving a counterbalance between adaptive and innate immune responses is able to predict neurological outcome very early after hospital admission after OHCA. This deserves confirmation in a larger population.
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Affiliation(s)
- Renaud Tissier
- Inserm, U955, F94000, Créteil, France; Université Paris Est, UMR_S955, UPEC, Ecole Nationale Vétérinaire d'Alfort, F-94000, Créteil, France.
| | - Hakim Hocini
- Inserm, U955, F94000, Créteil, France; Vaccine Research Institute, Université Paris Est-Créteil, F-94000, Créteil, France
| | - Nicolas Tchitchek
- Vaccine Research Institute, Université Paris Est-Créteil, F-94000, Créteil, France; CEA - Université Paris Sud 11 - INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases, IDMIT Infrastructure, F-92265 Fontenay-aux-Roses, France
| | - Nicolas Deye
- Medical ICU, Inserm U942, Lariboisiere Hospital, APHP, F-75010, Paris, France
| | - Stéphane Legriel
- Intensive Care Unit, Versailles Hospital, Le Chesnay, F-78150, France
| | - Nicolas Pichon
- Intensive Care Unit, University Hospital Dupuytren, Limoges, F-87042, France
| | - Cédric Daubin
- CHU de Caen, Department of Medical Intensive Care, Caen, F-14000, France
| | - Olivier Hermine
- Department of Hematology and INSERM U1163 CNRS ERL 8654, Imagine Institute and Necker Hospital, Paris, F-75015, France
| | - Pierre Carli
- SAMU de Paris, Service d'Anesthésie-Réanimation, Hôpital Universitaire Necker- Enfants Malades, Université Paris Descartes, F-75015, Paris, France
| | - Benoît Vivien
- SAMU de Paris, Service d'Anesthésie-Réanimation, Hôpital Universitaire Necker- Enfants Malades, Université Paris Descartes, F-75015, Paris, France
| | - Jean-Marc Tréluyer
- Clinical Research Unit, Paris Centre and Paris Descartes University, Paris, France
| | - Cécile Lefebvre
- Inserm, U955, F94000, Créteil, France; Vaccine Research Institute, Université Paris Est-Créteil, F-94000, Créteil, France
| | - Pascaline Tisserand
- Inserm, U955, F94000, Créteil, France; Vaccine Research Institute, Université Paris Est-Créteil, F-94000, Créteil, France
| | - Jean-Luc Dubois-Randé
- Inserm, U955, F94000, Créteil, France; Université Paris Est, UMR_S955, UPEC, Ecole Nationale Vétérinaire d'Alfort, F-94000, Créteil, France
| | - Alain Berdeaux
- Inserm, U955, F94000, Créteil, France; Université Paris Est, UMR_S955, UPEC, Ecole Nationale Vétérinaire d'Alfort, F-94000, Créteil, France
| | - Bijan Ghaleh
- Inserm, U955, F94000, Créteil, France; Université Paris Est, UMR_S955, UPEC, Ecole Nationale Vétérinaire d'Alfort, F-94000, Créteil, France; APHP, Hôpitaux Universitaires Henri Mondor, Plateforme de Ressources Biologiques, F-94000, Créteil, France
| | - Jean-Daniel Lelièvre
- Inserm, U955, F94000, Créteil, France; Vaccine Research Institute, Université Paris Est-Créteil, F-94000, Créteil, France
| | - Yves Levy
- Inserm, U955, F94000, Créteil, France; Vaccine Research Institute, Université Paris Est-Créteil, F-94000, Créteil, France.
| | - Alain Cariou
- Service de Réanimation Médicale, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, Paris, France
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4
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Le Corvoisier P, Gallet R, Lesault PF, Audureau E, Paul M, Ternacle J, Ghostine S, Champagne S, Arrouasse R, Bitari D, Mouillet G, Dubois-Randé JL, Berdeaux A, Ghaleh B, Deux JF, Teiger E. Intra-coronary morphine versus placebo in the treatment of acute ST-segment elevation myocardial infarction: the MIAMI randomized controlled trial. BMC Cardiovasc Disord 2018; 18:193. [PMID: 30340532 PMCID: PMC6194573 DOI: 10.1186/s12872-018-0936-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 06/05/2018] [Accepted: 10/09/2018] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Experimental studies suggest that morphine may protect the myocardium against ischemia-reperfusion injury by activating salvage kinase pathways. The objective of this two-center, randomized, double-blind, controlled trial was to assess potential cardioprotective effects of intra-coronary morphine in patients with ST-segment elevation myocardial infarction (STEMI) referred for primary percutaneous intervention. METHODS Ninety-one patients with STEMI were randomly assigned to intracoronary morphine (1 mg) or placebo at reperfusion of the culprit coronary artery. The primary endpoint was infarct size/left ventricular mass ratio assessed by magnetic resonance imaging on day 3-5. Secondary endpoints included the areas under the curve (AUC) for troponin T and creatine kinase over three days, left ventricular ejection fraction assessed by echocardiography on days 1 and 6, and clinical outcomes. RESULTS Infarct size/left ventricular mass ratio was not significantly reduced by intracoronary morphine compared to placebo (27.2% ± 15.0% vs. 30.5% ± 10.6%, respectively, p = 0.28). Troponin T and creatine kinase AUCs were similar in the two groups. Morphine did not improve left ventricular ejection fraction on day 1 (49.7 ± 10.3% vs. 49.3 ± 9.3% with placebo, p = 0.84) or day 6 (48.5 ± 10.2% vs. 49.0 ± 8.5% with placebo, p = 0.86). The number of major adverse cardiac events, including stent thrombosis, during the one-year follow-up was similar in the two groups. CONCLUSIONS Intracoronary morphine at reperfusion did not significantly reduce infarct size or improve left ventricular systolic function in patients with STEMI. Presence of comorbidities in some patients may contribute to explain these results. TRIAL REGISTRATION ClinicalTrials.gov, NCT01186445 (date of registration: August 23, 2010).
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Affiliation(s)
- Philippe Le Corvoisier
- Department VERDI, Inserm, CIC1430, AP-HP, Henri Mondor Hospital, 51 Avenue du Maréchal de Lattre de Tassigny, F-94010, Creteil, France. .,Inserm, U955 team 3, F-94010, Creteil, France.
| | - Romain Gallet
- Inserm, U955 team 3, F-94010, Creteil, France.,Interventional Cardiology Unit, AP-HP, Henri Mondor Hospital, F-94010, Creteil, France
| | | | - Etienne Audureau
- Department of Public Health and CEPIA EA7376, AP-HP, Henri Mondor Hospital, F-94010, Creteil, France
| | - Muriel Paul
- Department of Pharmacy, AP-HP, Henri Mondor Hospital, F-94010, Creteil, France
| | - Julien Ternacle
- Interventional Cardiology Unit, AP-HP, Henri Mondor Hospital, F-94010, Creteil, France
| | - Saïd Ghostine
- Department of Cardiology, Marie-Lannelongue Hospital, F-92350, Le Plessis-Robinson, France
| | - Stéphane Champagne
- Interventional Cardiology Unit, AP-HP, Henri Mondor Hospital, F-94010, Creteil, France
| | - Raphaele Arrouasse
- Department VERDI, Inserm, CIC1430, AP-HP, Henri Mondor Hospital, 51 Avenue du Maréchal de Lattre de Tassigny, F-94010, Creteil, France
| | - Dalila Bitari
- Department VERDI, Inserm, CIC1430, AP-HP, Henri Mondor Hospital, 51 Avenue du Maréchal de Lattre de Tassigny, F-94010, Creteil, France
| | - Gauthier Mouillet
- Interventional Cardiology Unit, AP-HP, Henri Mondor Hospital, F-94010, Creteil, France
| | - Jean-Luc Dubois-Randé
- Inserm, U955 team 3, F-94010, Creteil, France.,Department of Cardiology, AP-HP, Henri Mondor Hospital, F-94010, Creteil, France
| | | | | | - Jean-François Deux
- Department of Radiology, AP-HP, Henri Mondor Hospital, F-94010, Creteil, France
| | - Emmanuel Teiger
- Inserm, U955 team 3, F-94010, Creteil, France.,Interventional Cardiology Unit, AP-HP, Henri Mondor Hospital, F-94010, Creteil, France
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5
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Rambaud J, Lidouren F, Sage M, Kohlhauer M, Nadeau M, Fortin-Pellerin É, Micheau P, Zilberstein L, Mongardon N, Ricard JD, Terada M, Bruneval P, Berdeaux A, Ghaleh B, Walti H, Tissier R. Hypothermic total liquid ventilation after experimental aspiration-associated acute respiratory distress syndrome. Ann Intensive Care 2018; 8:57. [PMID: 29721820 PMCID: PMC5931951 DOI: 10.1186/s13613-018-0404-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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: 12/28/2017] [Accepted: 04/23/2018] [Indexed: 12/20/2022] Open
Abstract
Background Ultrafast cooling by total liquid ventilation (TLV) provides potent cardio- and neuroprotection after experimental cardiac arrest. However, this was evaluated in animals with no initial lung injury, whereas out-of-hospital cardiac arrest is frequently associated with early-onset pneumonia, which may lead to acute respiratory distress syndrome (ARDS). Here, our objective was to determine whether hypothermic TLV could be safe or even beneficial in an aspiration-associated ARDS animal model. Methods ARDS was induced in anesthetized rabbits through a two-hits model including the intra-tracheal administration of a pH = 1 solution mimicking gastric content and subsequent gaseous non-protective ventilation during 90 min (tidal volume [Vt] = 10 ml/kg with positive end-expiration pressure [PEEP] = 0 cmH2O). After this initial period, animals either received lung protective gas ventilation (LPV; Vt = 8 ml/kg and PEEP = 5 cmH2O) under normothermic conditions, or hypothermic TLV (TLV; Vt = 8 ml/kg and end-expiratory volume = 15 ml/kg). Both strategies were applied for 120 min with a continuous monitoring of respiratory and cardiovascular parameters. Animals were then euthanized for pulmonary histological analyses. Results Eight rabbits were included in each group. Before randomization, all animals elicited ARDS with arterial oxygen partial pressure over inhaled oxygen fraction ratios (PaO2/FiO2) below 100 mmHg, as well as decreased lung compliance. After randomization, body temperature rapidly decreased in TLV versus LPV group (32.6 ± 0.6 vs. 38.2 ± 0.4 °C after 15 min). Static lung compliance and gas exchanges were not significantly different in the TLV versus LPV group (PaO2/FiO2 = 62 ± 4 vs. 52 ± 8 mmHg at the end of the procedure, respectively). Mean arterial pressure and arterial bicarbonates levels were significantly higher in TLV versus LPV. Histological analysis also showed significantly lower inflammation in TLV versus LPV group (median histological score = 3 vs. 4.5/5, respectively; p = 0.03). Conclusion Hypothermic TLV can be safely induced in rabbits during aspiration-associated ARDS. It modified neither gas exchanges nor respiratory mechanics but reduced lung inflammation and hemodynamic failure in comparison with LPV. Since hypothermic TLV was previously shown to provide neuro- and cardio protective effects after cardiac arrest, these findings suggest a possible use of TLV in the settings of cardiac arrest-associated ARDS.
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Affiliation(s)
- Jérôme Rambaud
- U955 - IMRB, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, 94700, Maisons-Alfort, France.,Paediatric and Neonatal Intensive Care Unit, Armand-Trousseau Hospital, UPMC, APHP, Paris, France
| | - Fanny Lidouren
- U955 - IMRB, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, 94700, Maisons-Alfort, France
| | - Michaël Sage
- Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Matthias Kohlhauer
- U955 - IMRB, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, 94700, Maisons-Alfort, France
| | | | | | | | - Luca Zilberstein
- U955 - IMRB, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, 94700, Maisons-Alfort, France
| | - Nicolas Mongardon
- U955 - IMRB, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, 94700, Maisons-Alfort, France.,Service d'Anesthésie et des Réanimations Chirurgicales, DHU A-TVB, Hôpitaux Universitaires Henri Mondor, Assistance Publique des Hôpitaux de Paris, Créteil, France
| | - Jean-Damien Ricard
- UMR 1137, Inserm, Université Paris Diderot, Hôpital Louis Mourier, Réanimation Médico-chirurgicale, APHP, Colombes, France
| | - Megumi Terada
- UMR 970, Inserm, Paris Cardiovascular Research Center, Hôpital Européen Georges Pompidou, Paris, France
| | - Patrick Bruneval
- UMR 970, Inserm, Paris Cardiovascular Research Center, Hôpital Européen Georges Pompidou, Paris, France
| | - Alain Berdeaux
- U955 - IMRB, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, 94700, Maisons-Alfort, France
| | - Bijan Ghaleh
- U955 - IMRB, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, 94700, Maisons-Alfort, France
| | - Hervé Walti
- U955 - IMRB, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, 94700, Maisons-Alfort, France
| | - Renaud Tissier
- U955 - IMRB, Inserm, UPEC, Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, 94700, Maisons-Alfort, France.
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6
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Mongardon N, Kohlhauer M, Lidouren F, Hauet T, Giraud S, Hutin A, Costes B, Barau C, Bruneval P, Micheau P, Cariou A, Dhonneur G, Berdeaux A, Ghaleh B, Tissier R. A Brief Period of Hypothermia Induced by Total Liquid Ventilation Decreases End-Organ Damage and Multiorgan Failure Induced by Aortic Cross-Clamping. Anesth Analg 2017; 123:659-69. [PMID: 27482772 DOI: 10.1213/ane.0000000000001432] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND In animal models, whole-body cooling reduces end-organ injury after cardiac arrest and other hypoperfusion states. The benefits of cooling in humans, however, are uncertain, possibly because detrimental effects of prolonged cooling may offset any potential benefit. Total liquid ventilation (TLV) provides both ultrafast cooling and rewarming. In previous reports, ultrafast cooling with TLV potently reduced neurological injury after experimental cardiac arrest in animals. We hypothesized that a brief period of rapid cooling and rewarming via TLV could also mitigate multiorgan failure (MOF) after ischemia-reperfusion induced by aortic cross-clamping. METHODS Anesthetized rabbits were submitted to 30 minutes of supraceliac aortic cross-clamping followed by 300 minutes of reperfusion. They were allocated either to a normothermic procedure with conventional ventilation (control group) or to hypothermic TLV (33°C) before, during, and after cross-clamping (pre-clamp, per-clamp, and post-clamp groups, respectively). In all TLV groups, hypothermia was maintained for 75 minutes and switched to a rewarming mode before resumption to conventional mechanical ventilation. End points included cardiovascular, renal, liver, and inflammatory parameters measured 300 minutes after reperfusion. RESULTS In the normothermic (control) group, ischemia-reperfusion injury produced evidence of MOF including severe vasoplegia, low cardiac output, acute kidney injury, and liver failure. In the TLV group, we observed gradual improvements in cardiac output in post-clamp, per-clamp, and pre-clamp groups versus control (53 ± 8, 64 ± 12, and 90 ± 24 vs 36 ± 23 mL/min/kg after 300 minutes of reperfusion, respectively). Liver biomarker levels were also lower in pre-clamp and per-clamp groups versus control. However, acute kidney injury was prevented in pre-clamp, and to a limited extent in per-clamp groups, but not in the post-clamp group. For instance, creatinine clearance was 4.8 ± 3.1 and 0.5 ± 0.6 mL/kg/min at the end of the follow-up in pre-clamp versus control animals (P = .0004). Histological examinations of the heart, kidney, liver, and jejunum in TLV and control groups also demonstrated reduced injury with TLV. CONCLUSIONS A brief period of ultrafast cooling with TLV followed by rapid rewarming attenuated biochemical and histological markers of MOF after aortic cross-clamping. Cardiovascular and liver dysfunctions were limited by a brief period of hypothermic TLV, even when started after reperfusion. Conversely, acute kidney injury was limited only when hypothermia was started before reperfusion. Further work is needed to determine the clinical significance of our results and to identify the optimal duration and timing of TLV-induced hypothermia for end-organ protection in hypoperfusion states.
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Affiliation(s)
- Nicolas Mongardon
- From the *Inserm, U955, Equipe 3, Créteil, France; †Université Paris Est, UMR_S 955, UPEC, DHU A-TVB, Créteil, France; ‡Université Paris Est, Ecole Nationale Vétérinaire Alfort, Maisons Alfort, France; §Service d' Anesthésie et des Réanimations Chirurgicales, DHU A-TVB, Hôpitaux Universitaires Henri Mondor, Assistance Publique - Hôpitaux de Paris, Créteil, France; ‖Inserm, U1082, Poitiers, France; ¶Université de Poitiers, Faculté de Médecine et de Pharmacie, Poitiers, France; #CHU de Poitiers, Service de Biochimie, Poitiers, France; **Inserm, UMR 970, Paris Cardiovascular Research Center, Paris, France; ††Université de Sherbrooke, Sherbrooke, Canada; and ‡‡Service de Réanimation Médicale, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, Paris, France
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7
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Ghaleh B, Tissier R, Berdeaux A. Monoxyde d’azote et préconditionnement du myocarde ischémique par Bijan Ghaleh, Renaud Tissier & Alain Berdeaux. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jbio/2000194030137] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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8
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Hutin A, Lamhaut L, Lidouren F, Kohlhauer M, Mongardon N, Carli P, Berdeaux A, Ghaleh B, Tissier R. Early Coronary Reperfusion Facilitates Return of Spontaneous Circulation and Improves Cardiovascular Outcomes After Ischemic Cardiac Arrest and Extracorporeal Resuscitation in Pigs. J Am Heart Assoc 2016; 5:JAHA.116.004588. [PMID: 28007740 PMCID: PMC5210433 DOI: 10.1161/jaha.116.004588] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Background Extracorporeal cardiopulmonary resuscitation (ECPR) is widely proposed for the treatment of refractory cardiac arrest. It should be associated with coronary angiography if coronary artery disease is suspected. However, the prioritization of care remains unclear in this situation. Our goal was to determine whether coronary reperfusion should be instituted as soon as possible in such situations in a pig model. Methods and Results Anesthetized pigs were instrumented and submitted to coronary artery occlusion and ventricular fibrillation. After 5 minutes of untreated cardiac arrest, conventional cardiopulmonary resuscitation (CPR) was started. Fifteen minutes later, ECPR was initiated for a total duration of 240 minutes. Animals randomly underwent either early or late coronary reperfusion at 20 or 120 minutes of ECPR, respectively. This timing was adapted to the kinetic of infarct extension in pigs. Return of spontaneous circulation was determined as organized electrocardiogram rhythm with systolic arterial pressure above 80 mm Hg. During conventional CPR, hemodynamic parameters were not different between groups. Carotid blood flow then increased by 70% after the onset of ECPR in both groups. No animal (0 of 7) elicited return of spontaneous circulation after late reperfusion versus 4 of 7 after early reperfusion (P=0.025). The hemodynamic parameters, such as carotid blood flow, were also improved in early versus late reperfusion groups (113±20 vs 43±17 mL/min after 240 minutes of ECPR, respectively; P=0.030), along with infarct size decrease (71±4% vs 84±2% of the risk zone, respectively; P=0.013). Conclusions Early reperfusion improved hemodynamic status and facilitated return of spontaneous circulation in a porcine model of ischemic cardiac arrest treated by ECPR.
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Affiliation(s)
- Alice Hutin
- Inserm, U955, Equipe 03, Créteil, France.,Université Paris Est UMR_S955, DHU A-TVB, UPEC, Créteil, France.,Ecole Nationale Vétérinaire d'Alfort, Université Paris Est, Maisons-Alfort, France.,Département d'Anesthésie Réanimation, Hôpital Universitaire Necker-Enfants Malades, SAMU de Paris, Université Paris Descartes-Paris V, Paris, France
| | - Lionel Lamhaut
- Département d'Anesthésie Réanimation, Hôpital Universitaire Necker-Enfants Malades, SAMU de Paris, Université Paris Descartes-Paris V, Paris, France
| | - Fanny Lidouren
- Inserm, U955, Equipe 03, Créteil, France.,Université Paris Est UMR_S955, DHU A-TVB, UPEC, Créteil, France.,Ecole Nationale Vétérinaire d'Alfort, Université Paris Est, Maisons-Alfort, France
| | - Matthias Kohlhauer
- Inserm, U955, Equipe 03, Créteil, France.,Université Paris Est UMR_S955, DHU A-TVB, UPEC, Créteil, France.,Ecole Nationale Vétérinaire d'Alfort, Université Paris Est, Maisons-Alfort, France
| | - Nicolas Mongardon
- Inserm, U955, Equipe 03, Créteil, France.,Université Paris Est UMR_S955, DHU A-TVB, UPEC, Créteil, France.,Ecole Nationale Vétérinaire d'Alfort, Université Paris Est, Maisons-Alfort, France.,Service d'Anesthésie et des Réanimations Chirurgicales, Réanimation Chirurgicale Cardio-vasculaire, Hôpitaux Universitaires Henri Mondor, Assistance Publique-Hôpitaux de Paris, Créteil, France
| | - Pierre Carli
- Département d'Anesthésie Réanimation, Hôpital Universitaire Necker-Enfants Malades, SAMU de Paris, Université Paris Descartes-Paris V, Paris, France
| | - Alain Berdeaux
- Inserm, U955, Equipe 03, Créteil, France.,Université Paris Est UMR_S955, DHU A-TVB, UPEC, Créteil, France.,Ecole Nationale Vétérinaire d'Alfort, Université Paris Est, Maisons-Alfort, France
| | - Bijan Ghaleh
- Inserm, U955, Equipe 03, Créteil, France.,Université Paris Est UMR_S955, DHU A-TVB, UPEC, Créteil, France.,Ecole Nationale Vétérinaire d'Alfort, Université Paris Est, Maisons-Alfort, France
| | - Renaud Tissier
- Inserm, U955, Equipe 03, Créteil, France .,Université Paris Est UMR_S955, DHU A-TVB, UPEC, Créteil, France.,Ecole Nationale Vétérinaire d'Alfort, Université Paris Est, Maisons-Alfort, France
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9
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Kohlhauer M, Berdeaux A, Ghaleh B, Tissier R. Therapeutic hypothermia to protect the heart against acute myocardial infarction. Arch Cardiovasc Dis 2016; 109:716-722. [DOI: 10.1016/j.acvd.2016.05.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 04/29/2016] [Accepted: 05/03/2016] [Indexed: 10/20/2022]
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Musman J, Pons S, Barau C, Caccia C, Leoni V, Berdeaux A, Ghaleh B, Morin D. Regular treadmill exercise inhibits mitochondrial accumulation of cholesterol and oxysterols during myocardial ischemia-reperfusion in wild-type and ob/ob mice. Free Radic Biol Med 2016; 101:317-324. [PMID: 27989751 DOI: 10.1016/j.freeradbiomed.2016.10.496] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 10/18/2016] [Accepted: 10/22/2016] [Indexed: 12/31/2022]
Abstract
Mitochondria play a central role in the irreversible damages induced to the heart by a prolonged period of ischemia followed by reperfusion. We previously demonstrated that (1) myocardial ischemia-reperfusion induces mitochondrial accumulation of cholesterol and oxysterols that are deleterious for the organelle; (2) inhibition of cholesterol and oxysterol accumulation prevents mitochondrial injury at reperfusion; (3) exercise is cardioprotective and remains efficient in the presence of co-morbidities such as obesity. The aim of this study was to investigate whether regular exercise limits mitochondrial cholesterol and oxysterol accumulation in wild-type and obese mice. Wild-type C57BL/6J and obese (ob/ob) mice were assigned to sedentary conditions or regular treadmill exercise and submitted to 30min of coronary artery occlusion followed by 15min of reperfusion. Regular exercise improved oxidative phosphorylation, restored the antioxidant capacity of the heart by increasing the expression of SOD1 and catalase and reduced the mitochondrial generation of oxysterols in wild-type as well as in ob/ob mice. In wild-type animals, exercise limited the production of oxysterols. In ob/ob mice, despite hypercholesterolemia, chronic exercise abolished the mitochondrial accumulation of cholesterol and concomitantly reduced the generation of 7α-hydroxycholesterol, 7-ketocholesterol and cholesterol-5α,6α-epoxide. In conclusion, regular exercise prevents the mitochondrial accumulation of cholesterol and oxysterols which occurs during early reperfusion of an ischemic myocardium in mice. This effect is observed in normo and hypercholesterolemic animals. It may be partly responsible for the antioxidant properties of regular exercise and contribute to its cardioprotective effect in obese conditions.
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Affiliation(s)
- Julien Musman
- INSERM U955, Equipe 03, Créteil, France; Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France
| | - Sandrine Pons
- INSERM U955, Equipe 03, Créteil, France; Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France
| | - Caroline Barau
- INSERM U955, Equipe 03, Créteil, France; Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France
| | - Claudio Caccia
- Laboratory of Clinical Pathology and Medical Genetics, Institute Carlo Besta, Milano, Italy
| | - Valerio Leoni
- Laboratory of Clinical Pathology and Medical Genetics, Institute Carlo Besta, Milano, Italy; Laboratory of Clinical Chemistry, Hospital of Varese, ASST 7 Laghi, Varese, Italy
| | - Alain Berdeaux
- INSERM U955, Equipe 03, Créteil, France; Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France
| | - Bijan Ghaleh
- INSERM U955, Equipe 03, Créteil, France; Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France
| | - Didier Morin
- INSERM U955, Equipe 03, Créteil, France; Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France.
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11
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Gerbier R, Alvear-Perez R, Margathe JF, Flahault A, Couvineau P, Gao J, De Mota N, Dabire H, Li B, Ceraudo E, Hus-Citharel A, Esteoulle L, Bisoo C, Hibert M, Berdeaux A, Iturrioz X, Bonnet D, Llorens-Cortes C. Development of original metabolically stable apelin-17 analogs with diuretic and cardiovascular effects. FASEB J 2016; 31:687-700. [PMID: 27815337 DOI: 10.1096/fj.201600784r] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [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: 07/08/2016] [Accepted: 10/24/2016] [Indexed: 12/16/2022]
Abstract
Apelin, a (neuro)vasoactive peptide, plays a prominent role in controlling cardiovascular functions and water balance. Because the in vivo apelin half-life is in the minute range, we aimed to identify metabolically stable apelin-17 (K17F) analogs. We generated P92 by classic chemical substitutions and LIT01-196 by original addition of a fluorocarbon chain to the N terminus of K17F. Both analogs were much more stable in plasma (half-life >24 h for LIT01-196) than K17F (4.6 min). Analogs displayed a subnanomolar affinity for the apelin receptor and behaved as full agonists with regard to cAMP production, ERK phosphorylation, and apelin receptor internalization. Ex vivo, these compounds induced vasorelaxation of rat aortas and glomerular arterioles, respectively, precontracted with norepinephrine and angiotensin II, and increased cardiac contractility. In vivo, after intracerebroventricular administration in water-deprived mice, P92 and LIT01-196 were 6 and 160 times, respectively, more efficient at inhibiting systemic vasopressin release than K17F. Administered intravenously (nmol/kg range) in normotensive rats, these analogs potently increased urine output and induced a profound and sustained decrease in arterial blood pressure. In summary, these new compounds, which favor diuresis and improve cardiac contractility while reducing vascular resistances, represent promising candidates for the treatment of heart failure and water retention/hyponatremic disorders.-Gerbier, R., Alvear-Perez, R., Margathe, J.-F., Flahault, A., Couvineau, P., Gao, J., De Mota, N., Dabire, H., Li, B., Ceraudo, E., Hus-Citharel, A., Esteoulle, L., Bisoo, C., Hibert, M., Berdeaux, A., Iturrioz, X., Bonnet, D., Llorens-Cortes, C. Development of original metabolically stable apelin-17 analogs with diuretic and cardiovascular effects.
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Affiliation(s)
- Romain Gerbier
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France
| | - Rodrigo Alvear-Perez
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France
| | - Jean-Francois Margathe
- Laboratory of Therapeutic Innovation, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Faculty of Pharmacy, University of Strasbourg, Illkirch, France; and
| | - Adrien Flahault
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France
| | - Pierre Couvineau
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France
| | - Ji Gao
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France
| | - Nadia De Mota
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France
| | - Hubert Dabire
- INSERM Unité 955, Faculty of Medicine, University of Paris Est, Créteil, France
| | - Bo Li
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France
| | - Emilie Ceraudo
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France
| | - Annette Hus-Citharel
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France
| | - Lucie Esteoulle
- Laboratory of Therapeutic Innovation, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Faculty of Pharmacy, University of Strasbourg, Illkirch, France; and
| | - Cynthia Bisoo
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France
| | - Marcel Hibert
- Laboratory of Therapeutic Innovation, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Faculty of Pharmacy, University of Strasbourg, Illkirch, France; and
| | - Alain Berdeaux
- INSERM Unité 955, Faculty of Medicine, University of Paris Est, Créteil, France
| | - Xavier Iturrioz
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France
| | - Dominique Bonnet
- Laboratory of Therapeutic Innovation, Unité Mixte de Recherche 7200, Centre National de la Recherche Scientifique, Faculty of Pharmacy, University of Strasbourg, Illkirch, France; and
| | - Catherine Llorens-Cortes
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, INSERM Unité 1050, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7241, College de France, Paris, France;
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12
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Kohlhauer M, Berdeaux A, Kerber RE, Micheau P, Ghaleh B, Tissier R. Liquid Ventilation for the Induction of Ultrafast Hypothermia in Resuscitation Sciences: A Review. Ther Hypothermia Temp Manag 2016; 6:63-70. [DOI: 10.1089/ther.2015.0024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Matthias Kohlhauer
- Inserm, Unité 955, Equipe 03, Créteil, France
- Université Paris Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France
- Université Paris Est, École Nationale Vétérinaire d'Alfort, Maisons-Alfort Cedex, France
| | - Alain Berdeaux
- Inserm, Unité 955, Equipe 03, Créteil, France
- Université Paris Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France
- Université Paris Est, École Nationale Vétérinaire d'Alfort, Maisons-Alfort Cedex, France
| | - Richard E. Kerber
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Iowa Hospitals and Clinics, Iowa City, Iowa
| | - Philippe Micheau
- Department of Mechanical Engineering, Université de Sherbrooke, Sherbrooke, Canada
| | - Bijan Ghaleh
- Inserm, Unité 955, Equipe 03, Créteil, France
- Université Paris Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France
- Université Paris Est, École Nationale Vétérinaire d'Alfort, Maisons-Alfort Cedex, France
| | - Renaud Tissier
- Inserm, Unité 955, Equipe 03, Créteil, France
- Université Paris Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France
- Université Paris Est, École Nationale Vétérinaire d'Alfort, Maisons-Alfort Cedex, France
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13
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Melka J, Rienzo M, Bizé A, Jozwiak M, Sambin L, Hittinger L, Su JB, Berdeaux A, Ghaleh B. Improvement of left ventricular filling by ivabradine during chronic hypertension: involvement of contraction-relaxation coupling. Basic Res Cardiol 2016; 111:30. [PMID: 27040115 DOI: 10.1007/s00395-016-0550-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 03/24/2016] [Indexed: 11/30/2022]
Abstract
Chronic hypertension is associated with left ventricular (LV) hypertrophy and LV diastolic dysfunction with impaired isovolumic relaxation and abnormal LV filling. Increased heart rate (HR) worsens these alterations. We investigated whether the I f channel blocker ivabradine exerts beneficial effects on LV filling dynamic. In this setting, we also evaluated the relationship between LV filling and isovolumic contraction as a consequence of contraction-relaxation coupling. Therefore, hypertension was induced by a continuous infusion of angiotensin II during 28 days in 10 chronically instrumented pigs. LV function was investigated after stopping angiotensin II infusion to offset the changes in loading conditions. In the normal heart, LV relaxation filling, LV early filling, LV peak early filling rate were positively correlated to HR. In contrast, these parameters were significantly reduced at day 28 vs. day 0 (18, 42, and 26 %, respectively) despite the increase in HR (108 ± 6 beats/min vs. 73 ± 2 beats/min, respectively). These abnormalities were corrected by acute administration of ivabradine (1 mg/kg, iv). Ivabradine still exerted these effects when HR was controlled at 150 beats/min by atrial pacing. Interestingly, LV relaxation filling, LV early filling and LV peak early filling were strongly correlated with both isovolumic contraction and relaxation. In conclusion, ivabradine improves LV filling during chronic hypertension. The mechanism involves LV contraction-relaxation coupling through normalization of isovolumic contraction and relaxation as well as HR-independent mechanisms.
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Affiliation(s)
- Jonathan Melka
- Faculté de Médecine, Inserm, U955, Equipe 03, 8 rue du Général Sarrail, 94000, Créteil, France
- Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, 94000, Créteil, France
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, 94000, Maisons-Alfort, France
| | - Mario Rienzo
- Faculté de Médecine, Inserm, U955, Equipe 03, 8 rue du Général Sarrail, 94000, Créteil, France
- Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, 94000, Créteil, France
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, 94000, Maisons-Alfort, France
- AP-HP, Hôpital Européen Georges Pompidou, Service d'Anesthésie-Réanimation Chirurgicale, 75015, Paris, France
| | - Alain Bizé
- Faculté de Médecine, Inserm, U955, Equipe 03, 8 rue du Général Sarrail, 94000, Créteil, France
- Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, 94000, Créteil, France
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, 94000, Maisons-Alfort, France
| | - Mathieu Jozwiak
- Faculté de Médecine, Inserm, U955, Equipe 03, 8 rue du Général Sarrail, 94000, Créteil, France
- Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, 94000, Créteil, France
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, 94000, Maisons-Alfort, France
| | - Lucien Sambin
- Faculté de Médecine, Inserm, U955, Equipe 03, 8 rue du Général Sarrail, 94000, Créteil, France
- Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, 94000, Créteil, France
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, 94000, Maisons-Alfort, France
| | - Luc Hittinger
- Faculté de Médecine, Inserm, U955, Equipe 03, 8 rue du Général Sarrail, 94000, Créteil, France
- Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, 94000, Créteil, France
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, 94000, Maisons-Alfort, France
- AP-HP, Groupe Hospitalier Henri Mondor, Fédération de Cardiologie, 94000, Créteil, France
| | - Jin Bo Su
- Faculté de Médecine, Inserm, U955, Equipe 03, 8 rue du Général Sarrail, 94000, Créteil, France
- Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, 94000, Créteil, France
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, 94000, Maisons-Alfort, France
| | - Alain Berdeaux
- Faculté de Médecine, Inserm, U955, Equipe 03, 8 rue du Général Sarrail, 94000, Créteil, France
- Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, 94000, Créteil, France
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, 94000, Maisons-Alfort, France
- AP-HP, Groupe Hospitalier Henri Mondor, Fédération de Cardiologie, 94000, Créteil, France
| | - Bijan Ghaleh
- Faculté de Médecine, Inserm, U955, Equipe 03, 8 rue du Général Sarrail, 94000, Créteil, France.
- Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, 94000, Créteil, France.
- Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, 94000, Maisons-Alfort, France.
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Fayad-Kobeissi S, Ratovonantenaina J, Dabiré H, Wilson JL, Rodriguez AM, Berdeaux A, Dubois-Randé JL, Mann BE, Motterlini R, Foresti R. Vascular and angiogenic activities of CORM-401, an oxidant-sensitive CO-releasing molecule. Biochem Pharmacol 2015; 102:64-77. [PMID: 26721585 DOI: 10.1016/j.bcp.2015.12.014] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [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] [Received: 11/20/2015] [Accepted: 12/17/2015] [Indexed: 01/04/2023]
Abstract
Carbon monoxide (CO) is generated by heme oxygenase-1 (HO-1) and displays important signaling, anti-apoptotic and anti-inflammatory activities, indicating that pharmacological agents mimicking its action may have therapeutic benefit. This study examined the biochemical and pharmacological properties of CORM-401, a recently described CO-releasing molecule containing manganese as a metal center. We used in vitro approaches, ex-vivo rat aortic rings and the EA.hy926 endothelial cell line in culture to address how CORM-401 releases CO and whether the compound modulates vascular tone and pro-angiogenic activities, respectively. We found that CORM-401 released up to three CO/mole of compound depending on the concentration of the acceptor myoglobin. Oxidants such as H2O2, tert-butyl hydroperoxide or hypochlorous acid increased the CO liberated by CORM-401. CORM-401 also relaxed pre-contracted aortic rings and vasorelaxation was enhanced in combination with H2O2. Consistent with the release of multiple CO molecules, CORM-401-induced vasodilation was three times higher than that elicited by CORM-A1, which exhibits a similar half-life to CORM-401 but liberates only one CO/mole of compound. Furthermore, endothelial cells exposed to CORM-401 accumulated CO intracellularly, accelerated migration in vitro and increased VEGF and IL-8 levels. Studies using pharmacological inhibitors revealed HO-1 and p38 MAP kinase as two independent and parallel mechanisms involved in stimulating migration. We conclude that the ability of CORM-401 to release multiple CO, its sensitivity to oxidants which increase CO release, and its vascular and pro-angiogenic properties highlight new advances in the design of CO-releasing molecules that can be tailored for the treatment of inflammatory and oxidative stress-mediated pathologies.
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Affiliation(s)
- Sarah Fayad-Kobeissi
- Université Paris-Est, Faculté de Medicine, Créteil 94000, France; INSERM, U955, Equipe 12, Créteil 94000, France.
| | - Johary Ratovonantenaina
- Université Paris-Est, Faculté de Medicine, Créteil 94000, France; INSERM, U955, Equipe 12, Créteil 94000, France.
| | | | - Jayne Louise Wilson
- Université Paris-Est, Faculté de Medicine, Créteil 94000, France; INSERM, U955, Equipe 12, Créteil 94000, France.
| | - Anne Marie Rodriguez
- Université Paris-Est, Faculté de Medicine, Créteil 94000, France; INSERM, U955, Equipe 12, Créteil 94000, France.
| | | | - Jean-Luc Dubois-Randé
- AP-HP, Hôpital Henri Mondor-A. Chenevier, Service Hospitalier, Créteil 94000, France.
| | - Brian E Mann
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, United Kingdom.
| | - Roberto Motterlini
- Université Paris-Est, Faculté de Medicine, Créteil 94000, France; INSERM, U955, Equipe 12, Créteil 94000, France.
| | - Roberta Foresti
- Université Paris-Est, Faculté de Medicine, Créteil 94000, France; INSERM, U955, Equipe 12, Créteil 94000, France.
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15
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Morin D, Musman J, Pons S, Berdeaux A, Ghaleh B. Mitochondrial translocator protein (TSPO): From physiology to cardioprotection. Biochem Pharmacol 2015; 105:1-13. [PMID: 26688086 DOI: 10.1016/j.bcp.2015.12.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [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] [Received: 10/12/2015] [Accepted: 12/04/2015] [Indexed: 01/08/2023]
Abstract
The mitochondrial translocator protein (TSPO) is a high affinity cholesterol binding protein which is primarily located in the outer mitochondrial membrane where it has been shown to interact with proteins implicated in mitochondrial permeability transition pore (mPTP) formation. TSPO is found in different species and is expressed at high levels in tissues that synthesize steroids but is also present in other peripheral tissues especially in the heart. TSPO has been involved in the import of cholesterol into mitochondria, a key step in steroidogenesis. This constitutes the main established function of the protein which was recently challenged by genetic studies. TSPO has also been associated directly or indirectly with a wide range of cellular functions such as apoptosis, cell proliferation, differentiation, regulation of mitochondrial function or porphyrin transport. In the heart the role of TSPO remains undefined but a growing body of evidence suggests that TSPO plays a critical role in regulating physiological cardiac function and that TSPO ligands may represent interesting drugs to protect the heart under pathological conditions. This article briefly reviews current knowledge regarding TSPO and discusses its role in the cardiovascular system under physiological and pathologic conditions. More particularly, it provides evidence that TSPO can represent an alternative strategy to develop new pharmacological agents to protect the myocardium against ischemia-reperfusion injury.
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Affiliation(s)
- Didier Morin
- INSERM U955, Équipe 3, Créteil, France; Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France.
| | - Julien Musman
- INSERM U955, Équipe 3, Créteil, France; Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France.
| | - Sandrine Pons
- INSERM U955, Équipe 3, Créteil, France; Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France.
| | - Alain Berdeaux
- INSERM U955, Équipe 3, Créteil, France; Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France.
| | - Bijan Ghaleh
- INSERM U955, Équipe 3, Créteil, France; Université Paris-Est, UMR_S955, DHU A-TVB, UPEC, Créteil, France.
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16
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Hutin A, Lidouren F, Kohlhauer M, Lotteau L, Seemann A, Mongardon N, Renaud B, Isabey D, Carli P, Vivien B, Ricard JD, Hauet T, Kerber RE, Berdeaux A, Ghaleh B, Tissier R. Total liquid ventilation offers ultra-fast and whole-body cooling in large animals in physiological conditions and during cardiac arrest. Resuscitation 2015; 93:69-73. [PMID: 26070832 DOI: 10.1016/j.resuscitation.2015.05.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [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: 01/21/2015] [Revised: 04/19/2015] [Accepted: 05/21/2015] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Total liquid ventilation (TLV) can cool down the entire body within 10-15 min in small animals. Our goal was to determine whether it could also induce ultra-fast and whole-body cooling in large animals using a specifically dedicated liquid ventilator. Cooling efficiency was evaluated under physiological conditions (beating-heart) and during cardiac arrest with automated chest compressions (CC, intra-arrest). METHODS In a first set of experiments, beating-heart pigs were randomly submitted to conventional mechanical ventilation or hypothermic TLV with perfluoro-N-octane (between 15 and 32 °C). In a second set of experiments, pigs were submitted to ventricular fibrillation and CC. One group underwent continuous CC with asynchronous conventional ventilation (Control group). The other group was switched to TLV while pursuing CC for the investigation of cooling capacities and potential effects on cardiac massage efficiency. RESULTS Under physiological conditions, TLV significantly decreased the entire body temperatures below 34 °C within only 10 min. As examples, cooling rates averaged 0.54 and 0.94 °C/min in rectum and esophageous, respectively. During cardiac arrest, TLV did not alter CC efficiency and cooled the entire body below 34 °C within 20 min, the low-flow period slowing cooling during CC. CONCLUSION Using a specifically designed liquid ventilator, TLV induced a very rapid cooling of the entire body in large animals. This was confirmed in both physiological conditions and during cardiac arrest with CC. TLV could be relevant for ultra-rapid cooling independently of body weight.
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Affiliation(s)
- Alice Hutin
- Inserm, U955, Equipe 03, F-94000 Créteil, France; Université Paris Est, UMR_S955, DHU A-TVB, UPEC, F-94000 Créteil, France; Université Paris Est, Ecole Nationale Vétérinaire d'Alfort, F-94700 Maisons-Alfort, France; Hôpitaux Universitaires Paris Centre, Cochin Hôtel-Dieu, Université Paris Descartes - Paris V , F-75014 Paris France
| | - Fanny Lidouren
- Inserm, U955, Equipe 03, F-94000 Créteil, France; Université Paris Est, UMR_S955, DHU A-TVB, UPEC, F-94000 Créteil, France; Université Paris Est, Ecole Nationale Vétérinaire d'Alfort, F-94700 Maisons-Alfort, France
| | - Matthias Kohlhauer
- Inserm, U955, Equipe 03, F-94000 Créteil, France; Université Paris Est, UMR_S955, DHU A-TVB, UPEC, F-94000 Créteil, France; Université Paris Est, Ecole Nationale Vétérinaire d'Alfort, F-94700 Maisons-Alfort, France
| | - Luc Lotteau
- Bertin Technologies, Montigny le Bretonneux F-78180, France
| | - Aurélien Seemann
- Inserm, U955, Equipe 03, F-94000 Créteil, France; Université Paris Est, UMR_S955, DHU A-TVB, UPEC, F-94000 Créteil, France; Université Paris Est, Ecole Nationale Vétérinaire d'Alfort, F-94700 Maisons-Alfort, France
| | - Nicolas Mongardon
- Inserm, U955, Equipe 03, F-94000 Créteil, France; Université Paris Est, UMR_S955, DHU A-TVB, UPEC, F-94000 Créteil, France; Université Paris Est, Ecole Nationale Vétérinaire d'Alfort, F-94700 Maisons-Alfort, France
| | - Bertrand Renaud
- Hôpitaux Universitaires Paris Centre, Cochin Hôtel-Dieu, Université Paris Descartes - Paris V , F-75014 Paris France
| | - Daniel Isabey
- Université Paris Est, UMR_S955, DHU A-TVB, UPEC, F-94000 Créteil, France; Inserm, U955, Equipe 13, F-94000 Créteil, France
| | - Pierre Carli
- SAMU de Paris, Département d'Anesthésie Réanimation, Hôpital Universitaire Necker-Enfants Malades, Université Paris Descartes - Paris V, F-75015 Paris, France
| | - Benoit Vivien
- SAMU de Paris, Département d'Anesthésie Réanimation, Hôpital Universitaire Necker-Enfants Malades, Université Paris Descartes - Paris V, F-75015 Paris, France
| | - Jean-Damien Ricard
- Inserm, IAME, 1137, Univ Paris Diderot, Sorbonne Paris Cité, F-75018 Paris, France; Assistance Publique - Hôpitaux de Paris, Hôpital Louis Mourier, Service de Réanimation Médico-chirurgicale, F-92700 Colombes, France
| | | | - Richard E Kerber
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, USA
| | - Alain Berdeaux
- Inserm, U955, Equipe 03, F-94000 Créteil, France; Université Paris Est, UMR_S955, DHU A-TVB, UPEC, F-94000 Créteil, France; Université Paris Est, Ecole Nationale Vétérinaire d'Alfort, F-94700 Maisons-Alfort, France
| | - Bijan Ghaleh
- Inserm, U955, Equipe 03, F-94000 Créteil, France; Université Paris Est, UMR_S955, DHU A-TVB, UPEC, F-94000 Créteil, France; Université Paris Est, Ecole Nationale Vétérinaire d'Alfort, F-94700 Maisons-Alfort, France
| | - Renaud Tissier
- Inserm, U955, Equipe 03, F-94000 Créteil, France; Université Paris Est, UMR_S955, DHU A-TVB, UPEC, F-94000 Créteil, France; Université Paris Est, Ecole Nationale Vétérinaire d'Alfort, F-94700 Maisons-Alfort, France.
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17
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Rienzo M, Melka J, Bizé A, Sambin L, Jozwiak M, Su JB, Hittinger L, Berdeaux A, Ghaleh B. Ivabradine improves left ventricular function during chronic hypertension in conscious pigs. Hypertension 2014; 65:122-9. [PMID: 25350985 DOI: 10.1161/hypertensionaha.114.04323] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
During chronic hypertension, increases in heart rate (HR) or adrenergic stimulation are associated with maladaptive left ventricular responses as isovolumic contraction and relaxation durations failed to reduce, impeding filling. We, therefore, investigated the effects of acute selective HR reduction with ivabradine on left ventricular dysfunction during chronic hypertension. Accordingly, chronically instrumented pigs received angiotensin II infusion during 4 weeks to induce chronic hypertension. Left ventricular function was investigated while angiotensin II infusion was stopped. A single intravenous dose of ivabradine was administered at days 0 and 28. Dobutamine infusion was also performed. HR was increased at day 28 versus day 0. Paradoxically, both isovolumic contraction and relaxation times failed to reduce and remained unchanged (57±3 versus 58±3 ms and 74±3 versus 70±3 at day 28 versus day 0, respectively). At day 28, ivabradine significantly reduced HR by 27%. Concomitantly, abnormal ventricular responses were corrected because both isovolumic contraction and relaxation times were significantly reduced while filling time was improved. Similarly at day 28, maladaptive responses of isovolumic contraction and relaxation to dobutamine were no longer observed during HR reduction with ivabradine. Correction of HR reduction with pacing showed that non-HR-related mechanisms also participated to these beneficial effects. In this model of chronic hypertension and left ventricular hypertrophy, acute HR reduction with ivabradine corrects the maladaptive responses of cardiac cycle phases by restoring a normal profile for isovolumic contraction and relaxation both at rest and under adrenergic stimuli, ultimately favoring filling.
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Affiliation(s)
- Mario Rienzo
- From the Inserm, U955, Equipe 03, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, UMR_S955, UPEC, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, F-94700, Maisons-Alfort, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); AP-HP, Groupe Hospitalier Henri Mondor, Fédération de Cardiologie, F-94000, Créteil, France (L.H., A.B.); and AP-HP, Hôpital Européen Georges Pompidou, Service d'Anesthésie-Réanimation Chirurgicale, F-75015, Paris, France (M.R.)
| | - Jonathan Melka
- From the Inserm, U955, Equipe 03, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, UMR_S955, UPEC, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, F-94700, Maisons-Alfort, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); AP-HP, Groupe Hospitalier Henri Mondor, Fédération de Cardiologie, F-94000, Créteil, France (L.H., A.B.); and AP-HP, Hôpital Européen Georges Pompidou, Service d'Anesthésie-Réanimation Chirurgicale, F-75015, Paris, France (M.R.)
| | - Alain Bizé
- From the Inserm, U955, Equipe 03, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, UMR_S955, UPEC, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, F-94700, Maisons-Alfort, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); AP-HP, Groupe Hospitalier Henri Mondor, Fédération de Cardiologie, F-94000, Créteil, France (L.H., A.B.); and AP-HP, Hôpital Européen Georges Pompidou, Service d'Anesthésie-Réanimation Chirurgicale, F-75015, Paris, France (M.R.)
| | - Lucien Sambin
- From the Inserm, U955, Equipe 03, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, UMR_S955, UPEC, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, F-94700, Maisons-Alfort, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); AP-HP, Groupe Hospitalier Henri Mondor, Fédération de Cardiologie, F-94000, Créteil, France (L.H., A.B.); and AP-HP, Hôpital Européen Georges Pompidou, Service d'Anesthésie-Réanimation Chirurgicale, F-75015, Paris, France (M.R.)
| | - Mathieu Jozwiak
- From the Inserm, U955, Equipe 03, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, UMR_S955, UPEC, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, F-94700, Maisons-Alfort, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); AP-HP, Groupe Hospitalier Henri Mondor, Fédération de Cardiologie, F-94000, Créteil, France (L.H., A.B.); and AP-HP, Hôpital Européen Georges Pompidou, Service d'Anesthésie-Réanimation Chirurgicale, F-75015, Paris, France (M.R.)
| | - Jin Bo Su
- From the Inserm, U955, Equipe 03, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, UMR_S955, UPEC, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, F-94700, Maisons-Alfort, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); AP-HP, Groupe Hospitalier Henri Mondor, Fédération de Cardiologie, F-94000, Créteil, France (L.H., A.B.); and AP-HP, Hôpital Européen Georges Pompidou, Service d'Anesthésie-Réanimation Chirurgicale, F-75015, Paris, France (M.R.)
| | - Luc Hittinger
- From the Inserm, U955, Equipe 03, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, UMR_S955, UPEC, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, F-94700, Maisons-Alfort, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); AP-HP, Groupe Hospitalier Henri Mondor, Fédération de Cardiologie, F-94000, Créteil, France (L.H., A.B.); and AP-HP, Hôpital Européen Georges Pompidou, Service d'Anesthésie-Réanimation Chirurgicale, F-75015, Paris, France (M.R.)
| | - Alain Berdeaux
- From the Inserm, U955, Equipe 03, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, UMR_S955, UPEC, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, F-94700, Maisons-Alfort, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); AP-HP, Groupe Hospitalier Henri Mondor, Fédération de Cardiologie, F-94000, Créteil, France (L.H., A.B.); and AP-HP, Hôpital Européen Georges Pompidou, Service d'Anesthésie-Réanimation Chirurgicale, F-75015, Paris, France (M.R.)
| | - Bijan Ghaleh
- From the Inserm, U955, Equipe 03, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, UMR_S955, UPEC, F-94000, Créteil, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); Université Paris-Est, Ecole Nationale Vétérinaire d'Alfort, F-94700, Maisons-Alfort, France (M.R., J.M., A.B., L.S., M.J., J.B.S., L.H., A.B., B.G.); AP-HP, Groupe Hospitalier Henri Mondor, Fédération de Cardiologie, F-94000, Créteil, France (L.H., A.B.); and AP-HP, Hôpital Européen Georges Pompidou, Service d'Anesthésie-Réanimation Chirurgicale, F-75015, Paris, France (M.R.).
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18
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Barau C, Ghaleh B, Berdeaux A, Morin D. Cytochrome P450 and myocardial ischemia: potential pharmacological implication for cardioprotection. Fundam Clin Pharmacol 2014; 29:1-9. [DOI: 10.1111/fcp.12087] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 05/20/2014] [Accepted: 06/13/2014] [Indexed: 12/18/2022]
Affiliation(s)
- Caroline Barau
- Inserm, U955, Equipe 03; F-94000 Créteil France
- UMR_S955, UPEC; Université Paris-Est; F-94000 Créteil France
| | - Bijan Ghaleh
- Inserm, U955, Equipe 03; F-94000 Créteil France
- UMR_S955, UPEC; Université Paris-Est; F-94000 Créteil France
| | - Alain Berdeaux
- Inserm, U955, Equipe 03; F-94000 Créteil France
- UMR_S955, UPEC; Université Paris-Est; F-94000 Créteil France
| | - Didier Morin
- Inserm, U955, Equipe 03; F-94000 Créteil France
- UMR_S955, UPEC; Université Paris-Est; F-94000 Créteil France
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19
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Chenoune M, De Rochefort L, Bruneval P, Lidouren F, Kohlhauer M, Seemann A, Ghaleh B, Korn M, Dubuisson RM, Ben Yahmed A, Maître X, Isabey D, Ricard JD, Kerber RE, Darrasse L, Berdeaux A, Tissier R. Evaluation of lung recovery after static administration of three different perfluorocarbons in pigs. BMC Pharmacol Toxicol 2014; 15:53. [PMID: 25253660 PMCID: PMC4177717 DOI: 10.1186/2050-6511-15-53] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 03/04/2014] [Accepted: 09/18/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The respiratory properties of perfluorocarbons (PFC) have been widely studied for liquid ventilation in humans and animals. Several PFC were tested but their tolerance may depend on the species. Here, the effects of a single administration of liquid PFC into pig lungs were assessed and compared. Three different PFC having distinct evaporative and spreading coefficient properties were evaluated (Perfluorooctyl bromide [PFOB], perfluorodecalin [PFD] and perfluoro-N-octane [PFOC]). METHODS Pigs were anesthetized and submitted to mechanical ventilation. They randomly received an intra-tracheal administration of 15 ml/kg of either PFOB, PFD or PFOC with 12 h of mechanical ventilation before awakening and weaning from ventilation. A Control group was submitted to mechanical ventilation with no PFC administration. All animals were followed during 4 days after the initial PFC administration to investigate gas exchanges and clinical recovery. They were ultimately euthanized for histological analyses and assessment of PFC residual concentrations within the lungs using dual nuclei fluorine and hydrogen Magnetic Resonance Imaging (MRI). Sixteen animals were included (4/group). RESULTS In the PFD group, animals tended to be hypoxemic after awakening. In PFOB and PFOC groups, blood gases were not significantly different from the Control group after awakening. The poor tolerance of PFD was likely related to a large amount of residual PFC, as observed using MRI in all lung samples (≈10% of lung volume). This percentage was lower in the PFOB group (≈1%) but remained significantly greater than in the Control group. In the PFOC group, the percentage of residual PFC was not significantly different from that of the Control group (≈0.1%). Histologically, the most striking feature was an alveolar infiltration with foam macrophages, especially in the groups treated by PFD or PFOB. CONCLUSIONS Of the three tested perfluorocarbons, PFOC offered the best tolerance in terms of lung function, gas exchanges and residuum in the lung. PFOC was rapidly cleared from the lungs and virtually disappeared after 4 days whereas PFOB persisted at significant levels and led to foam macrophage infiltration. PFOC could be relevant for short term total liquid ventilation with a rapid weaning.
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20
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Atar D, Arheden H, Berdeaux A, Bonnet JL, Carlsson M, Clemmensen P, Cuvier V, Danchin N, Dubois-Randé JL, Engblom H, Erlinge D, Firat H, Halvorsen S, Hansen HS, Hauke W, Heiberg E, Koul S, Larsen AI, Le Corvoisier P, Nordrehaug JE, Paganelli F, Pruss RM, Rousseau H, Schaller S, Sonou G, Tuseth V, Veys J, Vicaut E, Jensen SE. Effect of intravenous TRO40303 as an adjunct to primary percutaneous coronary intervention for acute ST-elevation myocardial infarction: MITOCARE study results. Eur Heart J 2014; 36:112-9. [PMID: 25179768 DOI: 10.1093/eurheartj/ehu331] [Citation(s) in RCA: 139] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
AIM The MITOCARE study evaluated the efficacy and safety of TRO40303 for the reduction of reperfusion injury in patients undergoing revascularization for ST-elevation myocardial infarction (STEMI). METHODS Patients presenting with STEMI within 6 h of the onset of pain randomly received TRO40303 (n = 83) or placebo (n = 80) via i.v. bolus injection prior to balloon inflation during primary percutaneous coronary intervention in a double-blind manner. The primary endpoint was infarct size expressed as area under the curve (AUC) for creatine kinase (CK) and for troponin I (TnI) over 3 days. Secondary endpoints included measures of infarct size using cardiac magnetic resonance (CMR) and safety outcomes. RESULTS The median pain-to-balloon time was 180 min for both groups, and the median (mean) door-to-balloon time was 60 (38) min for all sites. Infarct size, as measured by CK and TnI AUCs at 3 days, was not significantly different between treatment groups. There were no significant differences in the CMR-assessed myocardial salvage index (1-infarct size/myocardium at risk) (mean 52 vs. 58% with placebo, P = 0.1000), mean CMR-assessed infarct size (21.9 g vs. 20.0 g, or 17 vs. 15% of LV-mass) or left ventricular ejection fraction (LVEF) (46 vs. 48%), or in the mean 30-day echocardiographic LVEF (51.5 vs. 52.2%) between TRO40303 and placebo. A greater number of adjudicated safety events occurred in the TRO40303 group for unexplained reasons. CONCLUSION This study in STEMI patients treated with contemporary mechanical revascularization principles did not show any effect of TRO40303 in limiting reperfusion injury of the ischaemic myocardium.
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Affiliation(s)
- Dan Atar
- Department of Cardiology B, Oslo University Hospital Ullevål, and Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Håkan Arheden
- Department of Clinical Physiology, Lund University, Skåne University Hospital, Lund, Sweden
| | | | - Jean-Louis Bonnet
- Assistance Publique Hôpitaux de Marseille, Hôpital La Timone, Marseille, France
| | - Marcus Carlsson
- Department of Clinical Physiology, Lund University, Skåne University Hospital, Lund, Sweden
| | - Peter Clemmensen
- Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Valérie Cuvier
- Trophos SA, Luminy Biotech Enterprises, Marseille, France
| | - Nicolas Danchin
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, Paris, France
| | | | - Henrik Engblom
- Department of Clinical Physiology, Lund University, Skåne University Hospital, Lund, Sweden
| | - David Erlinge
- Department of Cardiology, Lund University, Lund, Sweden
| | | | - Sigrun Halvorsen
- Department of Cardiology B, Oslo University Hospital Ullevål, and Faculty of Medicine, University of Oslo, Oslo, Norway
| | | | - Wilfried Hauke
- Trophos SA, Luminy Biotech Enterprises, Marseille, France
| | - Einar Heiberg
- Department of Clinical Physiology, Lund University, Skåne University Hospital, Lund, Sweden
| | - Sasha Koul
- Department of Cardiology, Lund University, Lund, Sweden
| | - Alf-Inge Larsen
- Department of Cardiology, Stavanger University Hospital, Stavanger, Norway
| | | | | | | | | | - Hélène Rousseau
- Clinical Research Unit, Lariboisière Hospital, Paris, France
| | | | | | - Vegard Tuseth
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Julien Veys
- Trophos SA, Luminy Biotech Enterprises, Marseille, France
| | - Eric Vicaut
- Clinical Research Unit, Lariboisière Hospital, Paris, France
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21
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Mongardon N, Kohlhauer M, Lidouren F, Giraud S, Chenoune M, Hauet T, Walti H, Micheau P, Robert R, Cariou A, Dubois-Randé JL, Dhonneur G, Ghaleh B, Berdeaux A, Tissier R. Ultrafast whole body cooling induced by hypothermic total liquid ventilation attenuates shock after aortic cross clamping in rabbits. Resuscitation 2014. [DOI: 10.1016/j.resuscitation.2014.03.241] [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]
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22
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Kohlhauer M, Darbera L, Lidouren F, Adam C, Chenoune M, Mongardon N, Bruneval P, Ghaleh B, Ricard JD, Micheau P, Carli P, Vivien B, Nadeau M, Robert R, Walti H, Berdeaux A, Tissier R. Ultrafast cooling with hypothermic total liquid ventilation is potently protective after non-shockable cardiac arrest in rabbits. Resuscitation 2014. [DOI: 10.1016/j.resuscitation.2014.03.055] [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]
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Woodman OL, Long R, Pons S, Eychenne N, Berdeaux A, Morin D. The cardioprotectant 3',4'-dihydroxyflavonol inhibits opening of the mitochondrial permeability transition pore after myocardial ischemia and reperfusion in rats. Pharmacol Res 2014; 81:26-33. [PMID: 24521796 DOI: 10.1016/j.phrs.2014.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [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: 12/30/2013] [Revised: 01/30/2014] [Accepted: 01/30/2014] [Indexed: 10/25/2022]
Abstract
The study aimed to determine the effect of 3',4'-dihydroxyflavonol (DiOHF) on mitochondrial function, in particular opening of the mitochondrial permeability transition pore (mPTP), respiratory function and reactive oxygen species (ROS) production, in isolated cardiac mitochondria after coronary artery occlusion and reperfusion in vivo. Opening of the mPTP, oxygen consumption and ROS production (assessed by measurement of H2O2) was determined in mitochondria isolated from normal hearts or from the ischemic zone of rat hearts subjected to 30min coronary artery occlusion and 15min reperfusion. Treatment of sham rats with DiOHF (10mgkg(-1) iv) significantly increased the concentration of Ca(2+) required to stimulate mPTP opening. This was accompanied by increased state 3 oxygen consumption and decreased H2O2 release. Ischemia and reperfusion (IR) significantly decreased the concentration of Ca(2+) required to stimulate mPTP opening, decreased state 3 oxygen consumption and increased H2O2 release, when pyruvate plus malate was provided as a substrate. Treatment with DiOHF prevented IR-induced changes in mPTP opening, state 3 oxygen consumption and H2O2 release so that there was no difference compared to sham. In isolated cardiac mitochondria from normal rats DiOHF had no effect on mPTP opening or on state 3 respiration but caused a small increase in state 4 respiration and decreased the respiratory control ratio. DiOHF, administered during ischemia just before reperfusion, inhibits mPTP opening and preserves mitochondrial function through a mechanism likely to be independent of its antioxidant activity or any direct effect on the mPTP.
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Affiliation(s)
- O L Woodman
- School of Medical Sciences, Health Innovations Research Institute, RMIT University, Bundoora, Victoria, Australia.
| | - R Long
- INSERM U955, Equipe 3, Créteil Cedex 94000, France; University Paris Est, Faculté de Médecine, Créteil 94000, France
| | - S Pons
- INSERM U955, Equipe 3, Créteil Cedex 94000, France; University Paris Est, Faculté de Médecine, Créteil 94000, France
| | - N Eychenne
- INSERM U955, Equipe 3, Créteil Cedex 94000, France; University Paris Est, Faculté de Médecine, Créteil 94000, France
| | - A Berdeaux
- INSERM U955, Equipe 3, Créteil Cedex 94000, France; University Paris Est, Faculté de Médecine, Créteil 94000, France
| | - D Morin
- INSERM U955, Equipe 3, Créteil Cedex 94000, France; University Paris Est, Faculté de Médecine, Créteil 94000, France
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24
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Long R, Salouage I, Berdeaux A, Motterlini R, Morin D. CORM-3, a water soluble CO-releasing molecule, uncouples mitochondrial respiration via interaction with the phosphate carrier. Biochim Biophys Acta 2013; 1837:201-9. [PMID: 24161358 DOI: 10.1016/j.bbabio.2013.10.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 09/24/2013] [Accepted: 10/15/2013] [Indexed: 12/21/2022]
Abstract
Carbon monoxide is continuously produced in small quantities in tissues and is an important signaling mediator in mammalian cells. We previously demonstrated that CO delivered to isolated rat heart mitochondria using a water-soluble CO-releasing molecule (CORM-3) is able to uncouple mitochondrial respiration. The aim of this study was to explore more in depth the mechanism(s) of this uncoupling effect. We found that acceleration of mitochondrial O2 consumption and decrease in membrane potential induced by CORM-3 were associated with an increase in mitochondrial swelling. This effect was independent of the opening of the mitochondrial transition pore as cyclosporine A was unable to prevent it. Interestingly, removal of phosphate from the incubation medium suppressed the effects mediated by CORM-3. Blockade of the dicarboxylate carrier, which exchanges dicarboxylate for phosphate, decreased the effects induced by CORM-3 while direct inhibition of the phosphate carrier with N-ethylmaleimide completely abolished the effects of CORM-3. In addition, CORM-3 was able to enhance the transport of phosphate into mitochondria as evidenced by changes in mitochondrial phosphate concentration and mitochondrial swelling that evaluates the activity of the phosphate carrier in de-energized conditions. These results indicate that CORM-3 activates the phosphate carrier leading to an increase in phosphate and proton transport inside mitochondria, both of which could contribute to the non-classical uncoupling effect mediated by CORM-3. The dicarboxylate carrier amplifies this effect by increasing intra-mitochondrial phosphate concentration.
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Affiliation(s)
- Romain Long
- INSERM U955, équipe 3, Faculté de Médecine, Université Paris Est, 94010 Creteil, France.
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25
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de Tassigny AD, Assaly R, Schaller S, Pruss RM, Berdeaux A, Morin D. Mitochondrial translocator protein (TSPO) ligands prevent doxorubicin-induced mechanical dysfunction and cell death in isolated cardiomyocytes. Mitochondrion 2013; 13:688-97. [PMID: 24121045 DOI: 10.1016/j.mito.2013.10.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [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: 12/26/2012] [Revised: 10/01/2013] [Accepted: 10/03/2013] [Indexed: 11/29/2022]
Abstract
Contractile dysfunction and subsequent development of cardiomyopathies are well known limiting factors in the treatment of cancer with doxorubicin and have been linked to mitochondrial dysfunction. Here, using adult isolated paced cardiomyocytes, we have demonstrated that ligands of translocator protein (TSPO) 4'-chlorodiazepam and TRO40303 prevented the doxorubicin-induced alterations in contractility and improved cardiomyocyte viability. This cardioprotective effect was closely associated with both a potent reduction in reactive oxygen species production and inhibition of mitochondrial permeability transition pore opening. Thus, preventive administration of TSPO ligands may represent a novel pharmacological strategy to protect the heart during doxorubicin treatment.
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Affiliation(s)
- Alexandra d'Anglemont de Tassigny
- INSERM U955, équipe 3, Créteil F-94010, France; Université Paris-Est, Faculté de Médecine, Créteil F-94010, France; Institut Supérieur des BioSciences, Faculté de Médecine, Créteil F-94010, France
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26
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Woodman OL, Long R, Eychenne N, Berdeaux A, Morin D. The cardioprotectant 3',4'-dihydroxyflavonol inhibits the mitochondrial permeability transition pore. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1861] [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: 11/14/2022] Open
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Paradis S, Leoni V, Caccia C, Berdeaux A, Morin D. Cardioprotection by the TSPO ligand 4'-chlorodiazepam is associated with inhibition of mitochondrial accumulation of cholesterol at reperfusion. Cardiovasc Res 2013; 98:420-7. [PMID: 23554458 DOI: 10.1093/cvr/cvt079] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [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] [Indexed: 01/01/2023] Open
Abstract
AIMS The translocator protein (TSPO) is located on the outer mitochondrial membrane where it is responsible for the uptake of cholesterol into mitochondria of steroidogenic organs. TSPO is also present in the heart where its role remains uncertain. We recently showed that TSPO ligands reduced infarct size and improved mitochondrial functions after ischaemia-reperfusion. This study, thus, sought to determine whether cholesterol could play a role in the cardioprotective effect of TSPO ligands. METHODS AND RESULTS In a model of 30 min coronary occlusion/15 min reperfusion in Wistar rat, we showed that reperfusion induced lipid peroxidation as demonstrated by the increase in conjugated diene and thiobarbituric acid reactive substance formation and altered mitochondrial function (decrease in oxidative phosphorylation and increase in the sensitivity of mitochondrial permeability transition pore opening) in ex-vivo isolated mitochondria. This was associated with an increase in mitochondrial cholesterol uptake (89.5 ± 12.2 vs. 39.9 ± 3.51 nmol/mg protein in controls, P < 0.01) and a subsequent strong generation of auto-oxidized oxysterols, i.e. 7α- and 7β-hydroxycholesterol, 7-ketocholesterol, cholesterol-5α,6α-epoxide, and 5β,6β-epoxide (+173, +149, +165, +165, and +193% vs. controls, respectively; P < 0.01). Administration of the selective TSPO ligand 4'-chlorodiazepam inhibited oxidative stress, improved mitochondrial function, and abolished both mitochondrial cholesterol accumulation and oxysterol production. This was also observed with the new TSPO ligand TRO40303. CONCLUSION These data suggest that 4'-chlorodiazepam inhibits oxidative stress and oxysterol formation by reducing the accumulation of cholesterol in the mitochondrial matrix at reperfusion and prevents mitochondrial injury. This new and original mechanism may contribute to the cardioprotective properties of TSPO ligands.
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Affiliation(s)
- Stéphanie Paradis
- INSERM, U955, Equipe 3, 8 rue du Général Sarrail, Créteil Cedex 94000, France
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28
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Portal L, Martin V, Assaly R, d'Anglemont de Tassigny A, Michineau S, Berdeaux A, Ghaleh B, Pons S. A Model of Hypoxia-Reoxygenation on Isolated Adult Mouse Cardiomyocytes. J Cardiovasc Pharmacol Ther 2013; 18:367-75. [DOI: 10.1177/1074248412475158] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The use of in vitro experimental models of hypoxia-reoxygenation (H/R) that mimic in vivo ischemia-reperfusion represents a powerful tool to investigate cardioprotective strategies against myocardial infarction. Most in vitro studies are performed using neonatal cardiac cells or immortalized embryonic cardiac cell lines which may limit the extrapolation of the results. We developed an H/R model using adult cardiomyocytes freshly isolated from mice and compared its characteristics to the in vivo ischemia-reperfusion conditions. First, cell death was assessed at different values of pH medium during hypoxia (6.2 vs 7.4) to simulate extracellular pH during in vivo ischemia. Cardiomyocyte mortality was aggravated with hypoxia under acidic pH. We next evaluated the relationship between the duration of hypoxia and cell death. Hypoxia time-dependently reduced myocyte viability (−24%, −36%, −53%, and −74% with 1, 1.5, 2, and 3 hours of hypoxia followed by 17 hours of reoxygenation, respectively). We then focused on the duration of reoxygenation as cardioprotective strategies have been reported to have different effects with short and long durations of reperfusion. We observed that cardiomyocyte mortality was increased when the duration of reoxygenation was increased from 2 h to 17 hours. Finally, we used our characterized model to investigate the cardioprotective effect of regular treadmill exercise. Myocyte viability was significantly greater in exercised when compared to sedentary mice (44% and 26%, respectively). Similarly, mice submitted to in vivo ischemia-reperfusion elicited infarct sizes reaching 27%, 43%, and 55% with 20, 30, and 45 minutes of coronary artery occlusion. In addition, infarct size was significantly reduced by exercise. In conclusion, this H/R model of cardiomyocytes freshly isolated from adult mice shows similar characteristics to the in vivo ischemia-reperfusion conditions. The comparison of in vivo and in vitro settings represents a powerful approach to investigate cardioprotective strategies and to distinguish between direct and indirect cardiomyocyte-dependent mechanisms.
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Affiliation(s)
- Lolita Portal
- INSERM, Unité U 955, Equipe 03, Créteil, France
- Université Paris-Est, Faculté de Médecine, Créteil, France
- Université Paris Est, Ecole Nationale Vétérinaire d’Alfort, Maisons Alfort, France
| | - Valérie Martin
- INSERM, Unité U 955, Equipe 03, Créteil, France
- Université Paris-Est, Faculté de Médecine, Créteil, France
- Université Paris Est, Ecole Nationale Vétérinaire d’Alfort, Maisons Alfort, France
| | - Rana Assaly
- INSERM, Unité U 955, Equipe 03, Créteil, France
- Université Paris-Est, Faculté de Médecine, Créteil, France
- Université Paris Est, Ecole Nationale Vétérinaire d’Alfort, Maisons Alfort, France
| | - Alexandra d'Anglemont de Tassigny
- INSERM, Unité U 955, Equipe 03, Créteil, France
- Université Paris-Est, Faculté de Médecine, Créteil, France
- Université Paris Est, Ecole Nationale Vétérinaire d’Alfort, Maisons Alfort, France
| | - Stéphanie Michineau
- INSERM, Unité U 955, Equipe 03, Créteil, France
- Université Paris-Est, Faculté de Médecine, Créteil, France
- Université Paris Est, Ecole Nationale Vétérinaire d’Alfort, Maisons Alfort, France
| | - Alain Berdeaux
- INSERM, Unité U 955, Equipe 03, Créteil, France
- Université Paris-Est, Faculté de Médecine, Créteil, France
- Université Paris Est, Ecole Nationale Vétérinaire d’Alfort, Maisons Alfort, France
- AP-HP, Hôpital H. Mondor - A. Chenevier, Fédération de Cardiologie, Créteil, France
| | - Bijan Ghaleh
- INSERM, Unité U 955, Equipe 03, Créteil, France
- Université Paris-Est, Faculté de Médecine, Créteil, France
- Université Paris Est, Ecole Nationale Vétérinaire d’Alfort, Maisons Alfort, France
| | - Sandrine Pons
- INSERM, Unité U 955, Equipe 03, Créteil, France
- Université Paris-Est, Faculté de Médecine, Créteil, France
- Université Paris Est, Ecole Nationale Vétérinaire d’Alfort, Maisons Alfort, France
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Darbera L, Chenoune M, Lidouren F, Kohlhauer M, Adam C, Bruneval P, Vivien B, Carli P, Ricard JD, Dubois-Randé JL, Ghaleh B, Berdeaux A, Tissier R. A new model of cardiac arrest with underlying myocardial ischemia in chronically instrumented rabbits. Resuscitation 2012. [DOI: 10.1016/j.resuscitation.2012.08.237] [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]
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Rienzo M, Bizé A, Pongas D, Michineau S, Melka J, Chan HL, Sambin L, Su JB, Dubois-Randé JL, Hittinger L, Berdeaux A, Ghaleh B. Impaired left ventricular function in the presence of preserved ejection in chronic hypertensive conscious pigs. Basic Res Cardiol 2012; 107:298. [PMID: 22961595 DOI: 10.1007/s00395-012-0298-9] [Citation(s) in RCA: 19] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 07/23/2012] [Accepted: 08/24/2012] [Indexed: 12/28/2022]
Abstract
Systolic function is often evaluated by measuring ejection fraction and its preservation is often assimilated with the lack of impairment of systolic left ventricular (LV) function. Considering the left ventricle as a muscular pump, we explored LV function during chronic hypertension independently of increased afterload conditions. Fourteen conscious and chronically instrumented pigs received continuous infusion of either angiotensin II (n = 8) or saline (n = 6) during 28 days. Hemodynamic recordings were regularly performed in the presence and 1 h after stopping angiotensin II infusion to evaluate intrinsic LV function. Throughout the protocol, the mean arterial pressure steadily increased by 55 ± 4 mmHg in angiotensin II-treated animals. There were no significant changes in stroke volume, LV fractional shortening or LV wall thickening, indicating the lack of alterations in LV ejection. In contrast, we observed maladaptive changes with (1) the lack of reduction in isovolumic contraction and relaxation durations with heart rate increases, (2) abnormally blunted isovolumic contraction and relaxation responses to dobutamine and (3) a linear correlation between isovolumic contraction and relaxation durations. None of these changes were observed in saline-infused animals. In conclusion, we provide evidence of impaired LV function with concomitant isovolumic contraction and relaxation abnormalities during chronic hypertension while ejection remains preserved and no sign of heart failure is present. The evaluation under unloaded conditions shows intrinsic LV abnormalities.
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Affiliation(s)
- Mario Rienzo
- Faculté de Médecine, INSERM Unité U, Créteil, France
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31
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Tissier R, Chenoune M, Pons S, Zini R, Darbera L, Lidouren F, Ghaleh B, Berdeaux A, Morin D. Mild hypothermia reduces per-ischemic reactive oxygen species production and preserves mitochondrial respiratory complexes. Resuscitation 2012; 84:249-55. [PMID: 22796545 DOI: 10.1016/j.resuscitation.2012.06.030] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 06/21/2012] [Accepted: 06/23/2012] [Indexed: 11/18/2022]
Abstract
BACKGROUND Mitochondrial dysfunction is critical following ischemic disorders. Our goal was to determine whether mild hypothermia could limit this dysfunction through per-ischemic inhibition of reactive oxygen species (ROS) generation. METHODS First, ROS production was evaluated during simulated ischemia in an vitro model of isolated rat cardiomyocytes at hypothermic (32°C) vs. normothermic (38°C) temperatures. Second, we deciphered the direct effect of hypothermia on mitochondrial respiration and ROS production in oxygenated mitochondria isolated from rabbit hearts. Third, we investigated these parameters in cardiac mitochondria extracted after 30-min of coronary artery occlusion (CAO) under normothermic conditions (CAO-N) or with hypothermia induced by liquid ventilation (CAO-H; target temperature: 32°C). RESULTS In isolated rat cardiomyocytes, per-ischemic ROS generation was dramatically decreased at 32 vs. 38°C (e.g., -55±8% after 140min of hypoxia). In oxygenated mitochondria isolated from intact rabbit hearts, hypothermia also improved respiratory control ratio (+22±3%) and reduced H2O2 production (-41±1%). Decreased oxidative stress was further observed in rabbit hearts submitted to hypothermic vs. normothermic ischemia (CAO-H vs. CAO-N), using thiobarbituric acid-reactive substances as a marker. This was accompanied by a preservation of the respiratory control ratio as well as the activity of complexes I, II and III in cardiac mitochondria. CONCLUSION The cardioprotective effect of mild hypothermia involves a direct effect on per-ischemic ROS generation and results in preservation of mitochondrial function. This might explain why the benefit afforded by hypothermia during regional myocardial ischemia depends on how fast it is instituted during the ischemic process.
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32
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Laure L, Long R, Lizano P, Zini R, Berdeaux A, Depre C, Morin D. Cardiac H11 kinase/Hsp22 stimulates oxidative phosphorylation and modulates mitochondrial reactive oxygen species production: Involvement of a nitric oxide-dependent mechanism. Free Radic Biol Med 2012; 52:2168-76. [PMID: 22542467 DOI: 10.1016/j.freeradbiomed.2012.03.001] [Citation(s) in RCA: 19] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 02/23/2012] [Accepted: 03/09/2012] [Indexed: 11/23/2022]
Abstract
H11 kinase/Hsp22 (Hsp22), a small heat shock protein upregulated by ischemia/reperfusion, provides cardioprotection equal to ischemic preconditioning (IPC) through a nitric oxide (NO)-dependent mechanism. A main target of NO-mediated preconditioning is the mitochondria, where NO reduces O₂ consumption and reactive oxygen species (ROS) production during ischemia. Therefore, we tested the hypothesis that Hsp22 overexpression modulates mitochondrial function through an NO-sensitive mechanism. In cardiac mitochondria isolated from transgenic (TG) mice with cardiac-specific overexpression of Hsp22, mitochondrial basal, ADP-dependent, and uncoupled O₂ consumption was increased in the presence of either glucidic or lipidic substrates. This was associated with a decrease in the maximal capabilities of complexes I and III to generate superoxide anion in combination with an inhibition of superoxide anion production by the reverse electron flow. NO synthase expression and NO production were increased in mitochondria from TG mice. Hsp22-induced increase in O₂ consumption was abolished either by pretreatment of TG mice with the NO synthase inhibitor L-N(G)-nitroarginine methyl ester (L-NAME) or in isolated mitochondria by the NO scavenger phenyltetramethylimidazoline-1-oxyl-3-oxide. L-NAME pretreatment also restored the reverse electron flow. After anoxia, mitochondria from TG mice showed a reduction in both oxidative phosphorylation and H₂O₂ production, an effect partially reversed by L-NAME. Taken together, these results demonstrate that Hsp22 overexpression increases the capacity of mitochondria to produce NO, which stimulates oxidative phosphorylation in normoxia and decreases oxidative phosphorylation and reactive oxygen species production after anoxia. Such characteristics replicate those conferred by IPC, thereby placing Hsp22 as a potential tool for prophylactic protection of mitochondrial function during ischemia.
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Affiliation(s)
- Lydie Laure
- INSERM U955, Equipe 03, Université Paris-Est, Faculté de Médecine, F-94010 Créteil, France
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33
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Su JB, Cazorla O, Blot S, Blanchard-Gutton N, Ait Mou Y, Barthélémy I, Sambin L, Sampedrano CC, Gouni V, Unterfinger Y, Aguilar P, Thibaud JL, Bizé A, Pouchelon JL, Dabiré H, Ghaleh B, Berdeaux A, Chetboul V, Lacampagne A, Hittinger L. Bradykinin restores left ventricular function, sarcomeric protein phosphorylation, and e/nNOS levels in dogs with Duchenne muscular dystrophy cardiomyopathy. Cardiovasc Res 2012; 95:86-96. [PMID: 22562664 DOI: 10.1093/cvr/cvs161] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIMS Cardiomyopathy is a lethal result of Duchenne muscular dystrophy (DMD), but its characteristics remain elusive. The golden retriever muscular dystrophy (GRMD) dogs produce DMD pathology and mirror DMD patient's symptoms, including cardiomyopathy. We previously showed that bradykinin slows the development of pacing-induced heart failure. Therefore, the goals of this research were to characterize dystrophin-deficiency cardiomyopathy and to examine cardiac effects of bradykinin in GRMD dogs. METHODS AND RESULTS At baseline, adult GRMD dogs had reduced fractional shortening (28 ± 2 vs. 38 ± 2% in control dogs, P < 0.001) and left ventricular (LV) subendocardial dysfunction leading to impaired endo-epicardial gradient of radial systolic velocity (1.3 ± 0.1 vs. 3.8 ± 0.2 cm/s in control dogs, P < 0.001) measured by echocardiography. These changes were normalized by bradykinin infusion (1 µg/min, 4 weeks). In isolated permeabilized LV subendocardial cells of GRMD dogs, tension-calcium relationships were shifted downward and force-generating capacity and transmural gradient of myofilament length-dependent activation were impaired compared with control dogs. Concomitantly, phosphorylation of sarcomeric regulatory proteins and levels of endothelial and neuronal nitric oxide synthase (e/nNOS) in LV myocardium were significantly altered in GRMD dogs. All these abnormalities were normalized in bradykinin-treated GRMD dogs. CONCLUSIONS Cardiomyopathy in GRMD dogs is characterized by profound LV subendocardial dysfunction, abnormal sarcomeric protein phosphorylation, and impaired e/nNOS, which can be normalized by bradykinin treatment. These data provide new insights into the pathophysiological mechanisms accounting for DMD cardiomyopathy and open new therapeutic perspectives.
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Affiliation(s)
- Jin Bo Su
- INSERM U955, ENVA, 7 avenu du Général de Gaulle, Maisons-Alfort, France.
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Desmard M, Foresti R, Morin D, Dagouassat M, Berdeaux A, Denamur E, Crook SH, Mann BE, Scapens D, Montravers P, Boczkowski J, Motterlini R, Motterlini R. Differential antibacterial activity against Pseudomonas aeruginosa by carbon monoxide-releasing molecules. Antioxid Redox Signal 2012; 16:153-63. [PMID: 21864022 DOI: 10.1089/ars.2011.3959] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AIMS Carbon monoxide (CO) delivered in a controlled manner to cells and organisms mediates a variety of pharmacological effects to the extent that CO-releasing molecules (CO-RMs) are being developed for therapeutic purposes. Recently, ruthenium-based CO-RMs have been shown to posses important bactericidal activity. Here we assessed the effect of fast CO releasers containing ruthenium (Ru(CO)(3)Cl(glycinate) [CORM-3] and tricarbonyldichlororuthenium(II) dimer [CORM-2]) and a novel slow manganese-based CO releaser ([Me(4)N][Mn(CO)(4)(thioacetate)(2)] [CORM-371]) on O(2) consumption and growth of Pseudomonas aeruginosa (PAO1). We then compared these effects with the action elicited by sodium boranocarbonate (CORM-A1), which lacks a transition metal but liberates CO with a rate similar to CORM-371. RESULTS CORM-2, CORM-3, and, to a lesser extent, CORM-371 exerted a significant bactericidal effect and decreased O(2) consumption in PAO1 in vitro. The effect appeared to be independent of reactive oxygen species production, but in the case of metal-containing compounds it was prevented by the thiol donor N-acetylcysteine. In contrast, CORM-A1 was bacteriostatic rather than bactericidal in vitro eliciting only a moderate and transient decrease in O(2) consumption. INNOVATION None of the tested CO-RMs was toxic to murine macrophages or human fibroblasts at the concentration impairing PA01 growth but only ruthenium-containing CO-RMs showed potential therapeutic properties by increasing the survival of mice infected with PA01. CONCLUSION CO carriers inhibit bacterial growth and O(2) consumption in vitro, but transition metal carbonyls appear more powerful than compounds spontaneously liberating CO. The nature of the metal in CO-RMs also modulates the anti-bacterial effect, with ruthenium-based CO-RMs being efficacious both in vitro and in vivo.
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Assaly R, de Tassigny AD, Paradis S, Jacquin S, Berdeaux A, Morin D. Oxidative stress, mitochondrial permeability transition pore opening and cell death during hypoxia-reoxygenation in adult cardiomyocytes. Eur J Pharmacol 2011; 675:6-14. [PMID: 22173126 DOI: 10.1016/j.ejphar.2011.11.036] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 11/21/2011] [Accepted: 11/27/2011] [Indexed: 12/21/2022]
Abstract
Reactive oxygen species production is necessary to induce cell death following hypoxia/reoxygenation but the effect of reactive oxygen species produced during hypoxia on mitochondrial permeability transition pore (mPTP) opening and cell death is not established. Here we designed a model of hypoxia/reoxygenation in isolated cardiomyocytes measuring simultaneously reactive oxygen species production, mPTP opening and cell death in order (i) to establish a causal relationship between them, and (ii) to investigate the roles of various reactive oxygen species in mPTP opening. The percentage of cardiomyocytes exhibiting mPTP opening during reoxygenation increased with the duration of hypoxia. Antioxidants increased the time to mPTP opening when present during hypoxia but not at reoxygenation. This was associated with a drop in hydroxyl radical and hydrogen peroxide during hypoxia and the first minutes of reoxygenation. The increase in time to mPTP opening was accompanied by an improvement in cell viability reflected by maintenance of superoxide production at reoxygenation. Cyclosporin A delayed both the time to mPTP opening and cell death despite maintenance of reactive oxygen species production during hypoxia. These findings demonstrate that reactive oxygen species production precedes mPTP opening and that reactive oxygen species produced during hypoxia, particularly hydroxyl radicals and hydrogen peroxide, are necessary to induce mPTP opening which depends on hypoxia duration.
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Affiliation(s)
- Rana Assaly
- INSERM U955 équipe 03, F-94010, Créteil, France
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Abstract
Mild hypothermia, 32-35° C, is very potent at reducing myocardial infarct size in rabbits, dogs, sheep, pigs, and rats. The benefit is directly related to reduction in normothermic ischaemic time, supporting the relevance of early and rapid cooling. The cardioprotective effect of mild hypothermia is not limited to its recognized reduction of infarct size, but also results in conservation of post-ischaemic contractile function, prevention of no-reflow or microvascular obstruction, and ultimately attenuation of left ventricular remodelling. The mechanism of the anti-infarct effect does not appear to be related to diminished energy utilization and metabolic preservation, but rather to survival signalling that involves either the extracellular signal-regulated kinases and/or the Akt/phosphoinositide 3-kinase/mammalian target of rapamycin pathways. Initial clinical trials of hypothermia in patients with ST-segment elevation myocardial infarction were disappointing, probably because cooling was too slow to shorten normothermic ischaemic time appreciably. New approaches to more rapid cooling have recently been described and may soon be available for clinical use. Alternatively, it may be possible to pharmacologically mimic the protection provided by cooling soon after the onset of ischaemia with an activator of mild hypothermia signalling, e.g. extracellular signal-regulated kinase activator, that could be given by emergency medical personnel. Finally, the protection afforded by cooling can be added to that of pre- and post-conditioning because their mechanisms differ. Thus, myocardial salvage might be greatly increased by rapidly cooling patients as soon as possible and then giving a pharmacological post-conditioning agent immediately prior to reperfusion.
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Habeler W, Ghaleh B, Barthelemy I, Plancheron A, Bizé A, Carlos-Sampedrano C, Chetboul V, Berdeaux A, Pucéat M, Peschanski M, Blot S, Monville C. Direct myocardial implantation of human embryonic stem cells in a dog model of Duchenne cardiomyopathy reveals poor cell survival in dystrophic tissue. J Stem Cells Regen Med 2011. [PMID: 24693175 PMCID: PMC3908277 DOI: 10.46582/jsrm.0702013] [Citation(s) in RCA: 0] [Impact Index Per Article: 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] [Indexed: 11/19/2022]
Abstract
Duchenne muscular dystrophy is characterized by progressive muscle weakness and early death resulting from dystrophin deficiency. Spontaneous canine muscular disorders are interesting settings to evaluate the relevance of innovative therapies in human using pre-clinical trials.
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Affiliation(s)
- W Habeler
- CECS, I-Stem, AFM , Evry 91030 cedex, France
| | - B Ghaleh
- INSERM, U955, Créteil , 94000, France ; Université Paris Est, Faculté de médecine, Créteil and Ecole Nationale Vétérinaire d'Alfort , 94000, France
| | - I Barthelemy
- Université Paris Est, Ecole Nationale Vétérinaire d'Alfort, UPR de Neurobiologie , 94704 Maisons-Alfort, France
| | | | - A Bizé
- INSERM, U955, Créteil , 94000, France ; Université Paris Est, Faculté de médecine, Créteil and Ecole Nationale Vétérinaire d'Alfort , 94000, France
| | - C Carlos-Sampedrano
- INSERM, U955, Créteil , 94000, France ; Université Paris Est, Faculté de médecine, Créteil and Ecole Nationale Vétérinaire d'Alfort , 94000, France
| | - V Chetboul
- INSERM, U955, Créteil , 94000, France ; Université Paris Est, Faculté de médecine, Créteil and Ecole Nationale Vétérinaire d'Alfort , 94000, France
| | - A Berdeaux
- INSERM, U955, Créteil , 94000, France ; Université Paris Est, Faculté de médecine, Créteil and Ecole Nationale Vétérinaire d'Alfort , 94000, France
| | - M Pucéat
- INSERM U633, Avenir Program, Embryonic Stem Cells and Cardiogenesis , Evry, France
| | - M Peschanski
- INSERM U861, I-STEM, AFM , Evry 91030 cedex France ; UEVE U861, I-STEM, AFM , Evry 91030 cedex France
| | - S Blot
- Université Paris Est, Ecole Nationale Vétérinaire d'Alfort, UPR de Neurobiologie , 94704 Maisons-Alfort, France
| | - C Monville
- INSERM U861, I-STEM, AFM , Evry 91030 cedex France ; UEVE U861, I-STEM, AFM , Evry 91030 cedex France
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Chenoune M, Lidouren F, Adam C, Pons S, Darbera L, Bruneval P, Ghaleh B, Zini R, Dubois-Randé JL, Carli P, Vivien B, Ricard JD, Berdeaux A, Tissier R. Ultrafast and whole-body cooling with total liquid ventilation induces favorable neurological and cardiac outcomes after cardiac arrest in rabbits. Circulation 2011; 124:901-11, 1-7. [PMID: 21810660 DOI: 10.1161/circulationaha.111.039388] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND In animal models of cardiac arrest, the benefit afforded by hypothermia is closely linked to the rapidity of the decrease in body temperature after resuscitation. Because total liquid ventilation (TLV) with temperature-controlled perfluorocarbons induces a very rapid and generalized cooling, we aimed to determine whether this could limit the post-cardiac arrest syndrome in a rabbit model. We especially focused on neurological, cardiac, pulmonary, liver and kidney dysfunctions. METHODS AND RESULTS Anesthetized rabbits were submitted to either 5 or 10 minutes of untreated ventricular fibrillation. After cardiopulmonary resuscitation and resumption of a spontaneous circulation, the animals underwent either normothermic life support (control) or therapeutic hypothermia induced by TLV. The latter procedure decreased esophageal and tympanic temperatures to 32°C to 33°C within only 10 minutes. After rewarming, the animals submitted to TLV exhibited an attenuated neurological dysfunction and decreased mortality 7 days later compared with control. The neuroprotective effect of TLV was confirmed by a significant reduction in brain histological damages. We also observed limitation of myocardial necrosis, along with a decrease in troponin I release and a reduced myocardial caspase 3 activity, with TLV. The beneficial effects of TLV were directly related to the rapidity of hypothermia induction because neither conventional cooling (cold saline infusion plus external cooling) nor normothermic TLV elicited a similar protection. CONCLUSIONS Ultrafast cooling instituted by TLV exerts potent neurological and cardiac protection in an experimental model of cardiac arrest in rabbits. This could be a relevant approach to provide a global and protective hypothermia against the post-cardiac arrest syndrome.
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Qiu H, Lizano P, Laure L, Sui X, Rashed E, Park JY, Hong C, Gao S, Holle E, Morin D, Dhar SK, Wagner T, Berdeaux A, Tian B, Vatner SF, Depre C. H11 kinase/heat shock protein 22 deletion impairs both nuclear and mitochondrial functions of STAT3 and accelerates the transition into heart failure on cardiac overload. Circulation 2011; 124:406-15. [PMID: 21747053 DOI: 10.1161/circulationaha.110.013847] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Cardiac overload, a major cause of heart failure, induces the expression of the heat shock protein H11 kinase/Hsp22 (Hsp22). METHODS AND RESULTS To determine the specific function of Hsp22 in that context, a knockout mouse model of Hsp22 deletion was generated. Although comparable to wild-type mice in basal conditions, knockout mice exposed to pressure overload developed less hypertrophy and showed ventricular dilation, impaired contractile function, increased myocyte length and accumulation of interstitial collagen, faster transition into heart failure, and increased mortality. Microarrays revealed that hearts from knockout mice failed to transactivate genes regulated by the transcription factor STAT3. Accordingly, nuclear STAT3 tyrosine phosphorylation was decreased in knockout mice. Silencing and overexpression experiments in isolated neonatal rat cardiomyocytes showed that Hsp22 activates STAT3 via production of interleukin-6 by the transcription factor nuclear factor-κB. In addition to its transcriptional function, STAT3 translocates to the mitochondria where it increases oxidative phosphorylation. Both mitochondrial STAT3 translocation and respiration were also significantly decreased in knockout mice. CONCLUSIONS This study found that Hsp22 represents a previously undescribed activator of both nuclear and mitochondrial functions of STAT3, and its deletion in the context of pressure overload in vivo accelerates the transition into heart failure and increases mortality.
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Affiliation(s)
- Hongyu Qiu
- Cardiovascular Research Institute, Department of Cell Biology and Molecular Medicine, University of Medicine and Dentistry of New Jersey, New Jersey Medical School, 185 S Orange Street, Newark, NJ 07103, USA
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Darbera L, Chenoune M, Lidouren F, Ghaleh B, Cohen MV, Downey JM, Berdeaux A, Tissier R. Adenosine and Opioid Receptors Do Not Trigger the Cardioprotective Effect of Mild Hypothermia. J Cardiovasc Pharmacol Ther 2011; 17:173-80. [DOI: 10.1177/1074248411412969] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Mild hypothermia (32°C-34°C) exerts a potent cardioprotection in animal models of myocardial infarction. Recently, it has been proposed that this beneficial effect is related to survival signaling. We, therefore, hypothesized that the well-known cardioprotective pathways dependent on adenosine and/or opioid receptors could be the trigger of hypothermia-induced salvage. Open-chest rabbits were accordingly exposed to 30 minutes of coronary artery occlusion (CAO) under normothermic (NT) or hypothermic ([HT] 32°C) conditions. In the latter, hypothermia was induced by total liquid ventilation with temperature-controlled perfluorocarbons in order to effect ultrafast cooling and to accurately control cardiac temperature. After 4 hours of reperfusion, infarct and no-reflow zone sizes were assessed and quantified as a percentage of the risk zone. In animals experiencing HT ischemia, the infarct size was dramatically reduced as compared to NT animals (9% ± 3% vs 55% ± 2% of the risk zone, respectively). Importantly, administration of opioid and adenosine receptor antagonists (naloxone [6 mg/kg iv] and 8-( p-sulfophenyl) theophylline [20 mg/kg iv], respectively) did not alter the infarct size or affect the cardioprotective effect of hypothermia. Doses of these 2 antagonists were appropriately chosen since they blunted infarct size reduction induced by selective opioid or adenosine receptor stimulation with morphine (0.3 mg/kg iv) or N6-cyclopentyladenosine ([CPA] 100 μg/kg iv), respectively. Therefore, the cardioprotective effect of mild hypothermia is not triggered by either opioid or adenosine receptor activation, suggesting the involvement of other cardioprotective pathways.
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Affiliation(s)
- Lys Darbera
- Université Paris-Est, Laboratoire de Pharmacologie, Faculté de Médecine, Créteil, France
- Ecole Nationale Vétérinaire d’Alfort, Maisons-Alfort, France
| | - Mourad Chenoune
- Université Paris-Est, Laboratoire de Pharmacologie, Faculté de Médecine, Créteil, France
- Ecole Nationale Vétérinaire d’Alfort, Maisons-Alfort, France
| | - Fanny Lidouren
- Université Paris-Est, Laboratoire de Pharmacologie, Faculté de Médecine, Créteil, France
- Ecole Nationale Vétérinaire d’Alfort, Maisons-Alfort, France
| | - Bijan Ghaleh
- Université Paris-Est, Laboratoire de Pharmacologie, Faculté de Médecine, Créteil, France
- Ecole Nationale Vétérinaire d’Alfort, Maisons-Alfort, France
| | - Michael V. Cohen
- Department of Physiology, University of South Alabama, College of Medicine, Mobile, AL, USA
- Department of Medicine, University of South Alabama, College of Medicine, Mobile, AL, USA
| | - James M. Downey
- Department of Physiology, University of South Alabama, College of Medicine, Mobile, AL, USA
| | - Alain Berdeaux
- Université Paris-Est, Laboratoire de Pharmacologie, Faculté de Médecine, Créteil, France
- Ecole Nationale Vétérinaire d’Alfort, Maisons-Alfort, France
| | - Renaud Tissier
- Université Paris-Est, Laboratoire de Pharmacologie, Faculté de Médecine, Créteil, France
- Ecole Nationale Vétérinaire d’Alfort, Maisons-Alfort, France
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Lo Iacono L, Boczkowski J, Zini R, Salouage I, Berdeaux A, Motterlini R, Morin D. A carbon monoxide-releasing molecule (CORM-3) uncouples mitochondrial respiration and modulates the production of reactive oxygen species. Free Radic Biol Med 2011; 50:1556-64. [PMID: 21382478 DOI: 10.1016/j.freeradbiomed.2011.02.033] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 02/25/2011] [Accepted: 02/28/2011] [Indexed: 01/17/2023]
Abstract
Carbon monoxide (CO), produced during the degradation of heme by the enzyme heme oxygenase, is an important signaling mediator in mammalian cells. Here we show that precise delivery of CO to isolated heart mitochondria using a water-soluble CO-releasing molecule (CORM-3) uncouples respiration. Addition of low-micromolar concentrations of CORM-3 (1-20 μM), but not an inactive compound that does not release CO, significantly increased mitochondrial oxygen consumption rate (State 2 respiration) in a concentration-dependent manner. In contrast, higher concentrations of CORM-3 (100 μM) suppressed ADP-dependent respiration through inhibition of cytochrome c oxidase. The uncoupling effect mediated by CORM-3 was inhibited in the presence of the CO scavenger myoglobin. Moreover, this effect was associated with a gradual decrease in membrane potential (ψ) over time and was partially reversed by malonate, an inhibitor of complex II activity. Similarly, inhibition of uncoupling proteins or blockade of adenine nucleotide transporter attenuated the effect of CORM-3 on both State 2 respiration and Δψ. Hydrogen peroxide (H₂O₂) produced by mitochondria respiring from complex I-linked substrates (pyruvate/malate) was increased by CORM-3. However, respiration initiated via complex II using succinate resulted in a fivefold increase in H₂O₂ production and this effect was significantly inhibited by CORM-3. These findings disclose a counterintuitive action of CORM-3 suggesting that CO at low levels acts as an important regulator of mitochondrial respiration.
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Affiliation(s)
- Luisa Lo Iacono
- Department of Drug Discovery and Development, Italian Institute of Technology, 16163 Genoa, Italy
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Tissier R, Ghaleh B, Berdeaux A. Ischémie-reperfusion myocardique — Préconditionnement. Réanimation 2011. [DOI: 10.1007/s13546-010-0103-4] [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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Pathak A, Berdeaux A, Mulder P, Thuillez C. [Ivabradine in coronary heart disease: experimental and clinical pharmacology]. Therapie 2010; 65:483-9. [PMID: 21144484 DOI: 10.2515/therapie/2010062] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Accepted: 07/02/2010] [Indexed: 11/20/2022]
Abstract
The present paper reviews clinical evidence underlining the role of ivabradine in the management of patient with ischemic heart disease. Reduction in heart rate mediated by this selective I(f) current inhibitor has been associated with anti-ischemic efficacy without any effect on haemodynamic or myocardial contractility. The antianginal efficacy of ivabradine is similar or superior to that of conventional anti-ischemic agents. Moreover combination therapy with ivabradine provides substantial benefit in patients already receiving beta-blocker. Prognostic efficacy of ivabradine is evaluated in a large program of studies, among which BEAUTIFUL in coronary patients with left ventricular dysfunction. The SIGNIFY study is ongoing in stable coronary patients without ventricular dysfunction. Furthermore the SHIFT trial will evaluate ivabradine benefits in heart failure patients, whatever the origin, ischemic or not.
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Affiliation(s)
- Atul Pathak
- Service de Pharmacologie Clinique, Inserm U 858, Faculté de Médecine, Toulouse, France.
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Tissier R, Chenoune M, Ghaleh B, Cohen MV, Downey JM, Berdeaux A. The small chill: mild hypothermia for cardioprotection? Cardiovasc Res 2010; 88:406-14. [PMID: 20621922 PMCID: PMC2972686 DOI: 10.1093/cvr/cvq227] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [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: 04/27/2010] [Revised: 06/22/2010] [Accepted: 07/05/2010] [Indexed: 11/12/2022] Open
Abstract
Reducing the heart's temperature by 2-5°C is a potent cardioprotective treatment in animal models of coronary artery occlusion. The anti-infarct benefit depends upon the target temperature and the time at which cooling is instituted. Protection primarily results from cooling during the ischaemic period, whereas cooling during reperfusion or beyond offers little protection. In animal studies, protection is proportional to both the depth and duration of cooling. An optimal cooling protocol must appreciably shorten the normothermic ischaemic time to effectively salvage myocardium. Patients presenting with acute myocardial infarction could be candidates for mild hypothermia since the current door-to-balloon time is typically 90 min. But they would have to be cooled quickly shortly after their arrival. Several strategies have been proposed for ultra-fast cooling, but most like liquid ventilation and pericardial perfusion are too invasive. More feasible strategies might include cutaneous cooling, peritoneal lavage with cold solutions, and endovascular cooling with intravenous thermodes. This last option has been investigated clinically, but the results have been disappointing possibly because the devices lacked capacity to cool the patient quickly or cooling was not implemented soon enough. The mechanism of hypothermia's protection has been assumed to be energy conservation. However, whereas deep hypothermia clearly preserves ATP, mild hypothermia has only a modest effect on ATP depletion during ischaemia. Some evidence suggests that intracellular signalling pathways might be responsible for the protection. It is unknown how cooling could trigger these pathways, but, if true, then it might be possible to duplicate cooling's protection pharmacologically.
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Affiliation(s)
- Renaud Tissier
- INSERM, Unité 955, Equipe 3, Créteil F-94000, France. on behalf of the European Society
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Le Corvoisier P, Adamy C, Sambin L, Crozatier B, Berdeaux A, Michel JB, Hittinger L, Su J. The cardiac renin-angiotensin system is responsible for high-salt diet-induced left ventricular hypertrophy in mice. Eur J Heart Fail 2010; 12:1171-8. [PMID: 20870672 DOI: 10.1093/eurjhf/hfq146] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
AIMS This study aimed to determine the role of the renin-angiotensin system (RAS) in high-salt (HS) diet-induced left ventricular hypertrophy (LVH). METHODS AND RESULTS Swiss mice were subjected to regular salt (RS) diet (0.6% NaCl), HS diet (4% NaCl), and HS plus irbesartan (50 mg/kg/day) or ramipril (1 mg/kg/day). After 8 weeks, arterial pressure was similar in all groups and similar to baseline, whereas left ventricle/body weight ratio was higher in HS mice than in RS mice (P < 0.005). There were also significant increases in collagen density, angiotensin-converting enzyme activity, angiotensin II type 1 receptor (AT1 receptor) density, and extracellular signal-regulated kinase (ERK1/2) phosphorylation in the left ventricle. Interestingly, increases in wall thickness and ERK1 phosphorylation were more marked in the septum than in the rest of the left ventricle. Irbesartan or ramipril treatment prevented LVH and the increase in ERK phosphorylation and reduced collagen content and AT1 up-regulation but up-regulated AT2 receptors. CONCLUSION In normal mice, HS diet induces septum-predominant LVH and fibrosis through activation of the cardiac RAS-ERK pathway, which can be blocked by irbesartan or ramipril, indicating a key role of the cardiac RAS in HS diet-induced LVH.
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Schaller S, Paradis S, Ngoh GA, Assaly R, Buisson B, Drouot C, Ostuni MA, Lacapere JJ, Bassissi F, Bordet T, Berdeaux A, Jones SP, Morin D, Pruss RM. TRO40303, a New Cardioprotective Compound, Inhibits Mitochondrial Permeability Transition. J Pharmacol Exp Ther 2010; 333:696-706. [DOI: 10.1124/jpet.110.167486] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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Chenoune M, Lidouren F, Ghaleh B, Couvreur N, Dubois-Rande JL, Berdeaux A, Tissier R. Rapid cooling of the heart with total liquid ventilation prevents transmural myocardial infarction following prolonged ischemia in rabbits. Resuscitation 2010; 81:359-62. [DOI: 10.1016/j.resuscitation.2009.12.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2009] [Revised: 10/27/2009] [Accepted: 12/04/2009] [Indexed: 11/28/2022]
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Iturrioz X, Alvear-Perez R, De Mota N, Franchet C, Guillier F, Leroux V, Dabire H, Le Jouan M, Chabane H, Gerbier R, Bonnet D, Berdeaux A, Maigret B, Galzi JL, Hibert M, Llorens-Cortes C. Identification and pharmacological properties of E339-3D6, the first nonpeptidic apelin receptor agonist. FASEB J 2009; 24:1506-17. [PMID: 20040517 DOI: 10.1096/fj.09-140715] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Apelin plays a prominent role in body fluid and cardiovascular homeostasis. To explore further upstream the role played by this peptide, nonpeptidic agonists and antagonists of the apelin receptor are required. To identify such compounds that do not exist to date, we used an original fluorescence resonance energy transfer-based assay to screen a G-protein-coupled receptor-focused library of fluorescent compounds on the human EGFP-tagged apelin receptor. This led to isolated E339-3D6 that displayed a 90 nM affinity and behaved as a partial agonist with regard to cAMP production and as a full agonist with regard to apelin receptor internalization. Finally, E339-3D6 induced vasorelaxation of rat aorta precontracted with noradrenaline and potently inhibited systemic vasopressin release in water-deprived mice when intracerebroventricularly injected. This compound represents the first nonpeptidic agonist of the apelin receptor, the optimization of which will allow development of a new generation of vasodilator and aquaretic agents.
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Affiliation(s)
- Xavier Iturrioz
- INSERM U691, Collège de France, 11 place Marcelin Berthelot, 75005 Paris, France
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Couvreur N, Tissier R, Pons S, Chetboul V, Gouni V, Bruneval P, Mandet C, Pouchelon JL, Berdeaux A, Ghaleh B. Chronic heart rate reduction with ivabradine improves systolic function of the reperfused heart through a dual mechanism involving a direct mechanical effect and a long-term increase in FKBP12/12.6 expression. Eur Heart J 2009; 31:1529-37. [PMID: 20028694 DOI: 10.1093/eurheartj/ehp554] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
AIMS To investigate the adaptations of left ventricular function and calcium handling to chronic heart rate reduction with ivabradine in the reperfused heart. METHODS AND RESULTS Rabbits underwent 20 min coronary artery occlusion followed by 3 weeks of reperfusion. Throughout reperfusion, rabbits received ivabradine (10 mg/kg/day) or vehicle (control). Ivabradine reduced heart rate by about 20% and improved both ejection fraction (+35%) and systolic displacement (+26%) after 3 weeks of treatment. Interestingly, this was associated with a two-fold increase expression of FKBP12/12.6. There was no difference in the expressions of phospholamban, SERCA2a, calsequestrin, ryanodine, phospho-ryanodine, and Na(2+)/Ca(2+) exchanger in the two groups. Infarct scar and vascular density were similar in both groups. Administration of a single intravenous bolus of ivabradine (1 mg/kg) in control rabbits at 3 weeks of reperfusion also significantly improved acutely ejection fraction and systolic displacement. CONCLUSION Chronic heart rate reduction protects the myocardium against ventricular dysfunction induced by myocardial ischaemia followed by 3 weeks of reperfusion. Beyond pure heart rate reduction, ivabradine improves global and regional systolic function of the reperfused heart through a dual mechanism involving a direct mechanical effect and a long-term adaptation in calcium handling, as supported by the increase in FKBP12/12.6 expression.
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Affiliation(s)
- Nicolas Couvreur
- INSERM U955 Equipe 03, 8, rue du Général Sarrail, Créteil F-94010, France
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Mansencal N, Tissier R, Deux JF, Ghaleh B, Couvreur N, Rienzo M, Guéret P, Rahmouni A, Berdeaux A, Garot J. Relation of the ischaemic substrate to left ventricular remodelling by cardiac magnetic resonance at 1.5 T in rabbits. Eur Radiol 2009; 20:1214-20. [PMID: 19936756 DOI: 10.1007/s00330-009-1660-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2009] [Accepted: 09/14/2009] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Contrast-enhanced cardiac magnetic resonance (CMR) for infarct sizing has been validated in large animals, but studies and follow-up are restricted. We sought to (1) validate CMR for assessment of myocardial area at risk (MAR) and infarct size (IS) in a rabbit model of reperfused myocardial infarction (MI); (2) analyse the relation between ischaemic substrates and subsequent left ventricular (LV) remodelling. METHODS Experimental reperfused acute MI was induced in 16 rabbits. Ten animals underwent cross-registered cine and contrast-enhanced CMR and histopathology at day 3 for assessment of MAR and IS (group 1). The remaining six rabbits underwent serial CMR for the study of LV remodelling (group 2). RESULTS In group 1, mean IS was 12.7 +/- 6.4% and 12.7 +/- 6.9% of total LV myocardial mass on CMR (late-enhancement technique) and histopathology (P = 0.52; r = 0.93). No significant difference occurred between CMR and histopathology for the calculation of MAR and IS/MAR ratio (P = 0.18 and P = 0.17), whereas correlations were strong (r = 0.92 and r = 0.95). In group 2, mean LV end-diastolic, end-systolic volumes and LV mass were significantly increased at 3 weeks compared with measurements at day 3 (P < 0.01). Significant correlations between initial IS and the increase in LV end-diastolic volume (r = 0.66) and the increase in LV mass (r = 0.48) were observed, as well as correlations between initial MAR and the increase in LV end-diastolic volume (r = 0.70) and the increase in LV mass (r = 0.37). CONCLUSIONS Comprehensive CMR provides accurate assessment of IS and MAR in reperfused rabbit MI. Infarct size is closely related to LV remodelling. Through the infarct size/MAR ratio, this approach has great potential for assessing interventions aimed at cardioprotection.
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Affiliation(s)
- Nicolas Mansencal
- INSERM U841, IMRB, Faculté de médecine, Université Paris 12 et Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
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