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Kamel R, Baetz D, Gueguen N, Lebeau L, Barbelivien A, Guihot AL, Allawa L, Gallet J, Beaumont J, Ovize M, Henrion D, Reynier P, Mirebeau-Prunier D, Prunier F, Tamareille S. Kynurenic Acid: A Novel Player in Cardioprotection against Myocardial Ischemia/Reperfusion Injuries. Pharmaceuticals (Basel) 2023; 16:1381. [PMID: 37895852 PMCID: PMC10610491 DOI: 10.3390/ph16101381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/21/2023] [Accepted: 09/26/2023] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND Myocardial infarction is one of the leading causes of mortality worldwide; hence, there is an urgent need to discover novel cardioprotective strategies. Kynurenic acid (KYNA), a metabolite of the kynurenine pathway, has been previously reported to have cardioprotective effects. However, the mechanisms by which KYNA may be protective are still unclear. The current study addressed this issue by investigating KYNA's cardioprotective effect in the context of myocardial ischemia/reperfusion. METHODS H9C2 cells and rats were exposed to hypoxia/reoxygenation or myocardial infarction, respectively, in the presence or absence of KYNA. In vitro, cell death was quantified using flow cytometry analysis of propidium iodide staining. In vivo, TTC-Evans Blue staining was performed to evaluate infarct size. Mitochondrial respiratory chain complex activities were measured using spectrophotometry. Protein expression was evaluated by Western blot, and mRNA levels by RT-qPCR. RESULTS KYNA treatment significantly reduced H9C2-relative cell death as well as infarct size. KYNA did not exhibit any effect on the mitochondrial respiratory chain complex activity. SOD2 mRNA levels were increased by KYNA. A decrease in p62 protein levels together with a trend of increase in PARK2 may mark a stimulation of mitophagy. Additionally, ERK1/2, Akt, and FOXO3α phosphorylation levels were significantly reduced after the KYNA treatment. Altogether, KYNA significantly reduced myocardial ischemia/reperfusion injuries in both in vitro and in vivo models. CONCLUSION Here we show that KYNA-mediated cardioprotection was associated with enhanced mitophagy and antioxidant defense. A deeper understanding of KYNA's cardioprotective mechanisms is necessary to identify promising novel therapeutic targets and their translation into the clinical arena.
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Affiliation(s)
- Rima Kamel
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
| | - Delphine Baetz
- Laboratoire CarMeN, INSERM U1060, INRA U1397, Université Claude Bernard Lyon 1, F-69500 Bron, France; (D.B.); (M.O.)
| | - Naïg Gueguen
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
- Service de Biochimie et Biologie Moléculaire, CHU Angers, F-49000 Angers, France
| | - Lucie Lebeau
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
| | - Agnès Barbelivien
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
| | - Anne-Laure Guihot
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
| | - Louwana Allawa
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
| | - Jean Gallet
- Service de Cardiologie, CHU Angers, F-49000 Angers, France;
| | - Justine Beaumont
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
| | - Michel Ovize
- Laboratoire CarMeN, INSERM U1060, INRA U1397, Université Claude Bernard Lyon 1, F-69500 Bron, France; (D.B.); (M.O.)
- Service d’Explorations Fonctionnelles Cardiovasculaires & CIC de Lyon, Hôpital Louis Pradel, Hospices Civils de Lyon, F-69000 Lyon, France
| | - Daniel Henrion
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
| | - Pascal Reynier
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
- Service de Biochimie et Biologie Moléculaire, CHU Angers, F-49000 Angers, France
| | - Delphine Mirebeau-Prunier
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
- Service de Biochimie et Biologie Moléculaire, CHU Angers, F-49000 Angers, France
| | - Fabrice Prunier
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
- Service de Cardiologie, CHU Angers, F-49000 Angers, France;
| | - Sophie Tamareille
- MITOVASC, SFR ICAT, CNRS 6015, INSERM U1083, Université d’Angers, F-49000 Angers, France; (R.K.); (N.G.); (L.L.); (A.-L.G.); (L.A.); (D.H.); (P.R.); (D.M.-P.); (F.P.)
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Schleef M, Rozes M, Pillot B, Bidaux G, Guebre-Egziabher F, Juillard L, Baetz D, Lemoine S. Heat Shock Protein 70 Is Involved in the Efficiency of Preconditioning with Cyclosporine A in Renal Ischemia Reperfusion Injury by Modulating Mitochondrial Functions. Int J Mol Sci 2023; 24:9541. [PMID: 37298493 PMCID: PMC10253937 DOI: 10.3390/ijms24119541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/22/2023] [Accepted: 05/27/2023] [Indexed: 06/12/2023] Open
Abstract
Cyclosporine A (CsA) preconditioning is known to target mitochondrial permeability transition pore and protect renal function after ischemia reperfusion (IR). The upregulation of heat-shock protein 70 (Hsp70) expression after CsA injection is thought to be associated with renal protection. The aim of this study was to test the effect of Hsp70 expression on kidney and mitochondria functions after IR. Mice underwent a right unilateral nephrectomy and 30 min of left renal artery clamping, performed after CsA injection and/or administration of the Hsp70 inhibitor. Histological score, plasma creatinine, mitochondrial calcium retention capacity, and oxidative phosphorylation were assessed after 24 h of reperfusion. In parallel, we used a model of hypoxia reoxygenation on HK2 cells to modulate Hsp70 expression using an SiRNA or a plasmid. We assessed cell death after 18 h of hypoxia and 4 h of reoxygenation. CsA significantly improved renal function, histological score, and mitochondrial functions compared to the ischemic group but the inhibition of Hsp70 repealed the protection afforded by CsA injection. In vitro, Hsp70 inhibition by SiRNA increased cell death. Conversely, Hsp70 overexpression protected cells from the hypoxic condition, as well as the CsA injection. We did not find a synergic association between Hsp70 expression and CsA use. We demonstrated Hsp70 could modulate mitochondrial functions to protect kidneys from IR. This pathway may be targeted by drugs to provide new therapeutics to improve renal function after IR.
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Affiliation(s)
- Maxime Schleef
- CarMeN Laboratory, Inserm U1060, INRA U1397, Université Claude Bernard Lyon 1, 69500 Bron, France; (M.S.); (M.R.); (B.P.); (G.B.); (F.G.-E.); (L.J.); (D.B.)
- Hospices Civils de Lyon, Médecine Intensive Réanimation, Hôpital Edouard Herriot, 69003 Lyon, France
| | - Margaux Rozes
- CarMeN Laboratory, Inserm U1060, INRA U1397, Université Claude Bernard Lyon 1, 69500 Bron, France; (M.S.); (M.R.); (B.P.); (G.B.); (F.G.-E.); (L.J.); (D.B.)
- Hospices Civils de Lyon, Néphrologie-HTA-Dialyse, Hôpital Edouard Herriot, 69003 Lyon, France
| | - Bruno Pillot
- CarMeN Laboratory, Inserm U1060, INRA U1397, Université Claude Bernard Lyon 1, 69500 Bron, France; (M.S.); (M.R.); (B.P.); (G.B.); (F.G.-E.); (L.J.); (D.B.)
| | - Gabriel Bidaux
- CarMeN Laboratory, Inserm U1060, INRA U1397, Université Claude Bernard Lyon 1, 69500 Bron, France; (M.S.); (M.R.); (B.P.); (G.B.); (F.G.-E.); (L.J.); (D.B.)
| | - Fitsum Guebre-Egziabher
- CarMeN Laboratory, Inserm U1060, INRA U1397, Université Claude Bernard Lyon 1, 69500 Bron, France; (M.S.); (M.R.); (B.P.); (G.B.); (F.G.-E.); (L.J.); (D.B.)
- Hospices Civils de Lyon, Néphrologie-HTA-Dialyse, Hôpital Edouard Herriot, 69003 Lyon, France
| | - Laurent Juillard
- CarMeN Laboratory, Inserm U1060, INRA U1397, Université Claude Bernard Lyon 1, 69500 Bron, France; (M.S.); (M.R.); (B.P.); (G.B.); (F.G.-E.); (L.J.); (D.B.)
- Hospices Civils de Lyon, Néphrologie-HTA-Dialyse, Hôpital Edouard Herriot, 69003 Lyon, France
| | - Delphine Baetz
- CarMeN Laboratory, Inserm U1060, INRA U1397, Université Claude Bernard Lyon 1, 69500 Bron, France; (M.S.); (M.R.); (B.P.); (G.B.); (F.G.-E.); (L.J.); (D.B.)
| | - Sandrine Lemoine
- CarMeN Laboratory, Inserm U1060, INRA U1397, Université Claude Bernard Lyon 1, 69500 Bron, France; (M.S.); (M.R.); (B.P.); (G.B.); (F.G.-E.); (L.J.); (D.B.)
- Hospices Civils de Lyon, Explorations Fonctionnelles Rénales, Hôpital Edouard Herriot, 69003 Lyon, France
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Ferrera R, Védère M, Lo-Grasso M, Augeul L, Chouabe C, Bidaux G, Baetz D. Postconditioning by Delayed Administration of Ciclosporin A: Implication for Donation after Circulatory Death (DCD). Int J Mol Sci 2022; 23:12858. [PMID: 36361649 PMCID: PMC9657531 DOI: 10.3390/ijms232112858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/21/2022] [Accepted: 10/21/2022] [Indexed: 11/16/2022] Open
Abstract
Heart transplantation is facing a shortage of grafts. Donation after Circulatory Death (DCD) would constitute a new potential of available organs. In the present work, we aimed to evaluate whether Postconditioning (ischemic or with ciclosporin-A (CsA)) could reduce ischemia-reperfusion injury in a cardiac arrest model when applied at the start of reperfusion or after a delay. An isolated rat heart model was used as a model of DCD. Hearts were submitted to a cardiac arrest of 40 min of global warm ischemia (37 °C) followed by 3 h of 4 °C-cold preservation, then 60 min reperfusion. Hearts were randomly allocated into the following groups: control, ischemic postconditioning (POST, consisting of two episodes each of 30 s ischemia and 30 s reperfusion at the onset of reperfusion), and CsA group (CsA was perfused at 250 nM for 10 min at reperfusion). In respective subgroups, POST and CsA were applied after a delay of 3, 10, and 20 min. Necrosis was lower in CsA and POST versus controls (p < 0.01) whereas heart functions were improved (p < 0.01). However, while the POST lost its efficacy if delayed beyond 3 min of reperfusion, CsA treatment surprisingly showed a reduction of necrosis even if applied after a delay of 3 and 10 min of reperfusion (p < 0.01). This cardioprotection by delayed CsA application correlated with better functional recovery and higher mitochondrial respiratory index. Furthermore, calcium overload necessary to induce mitochondrial permeability transition pore (MPTP) opening was similar in all cardioprotection groups, suggesting a crucial role of MPTP in this delayed protection of DCD hearts.
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Affiliation(s)
- René Ferrera
- University of Lyon, CARMEN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69500 Lyon, France
| | - Marie Védère
- University of Lyon, CARMEN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69500 Lyon, France
| | - Megane Lo-Grasso
- University of Lyon, CARMEN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69500 Lyon, France
| | - Lionel Augeul
- University of Lyon, CARMEN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69500 Lyon, France
| | - Christophe Chouabe
- University of Lyon, CARMEN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69500 Lyon, France
| | - Gabriel Bidaux
- University of Lyon, CARMEN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69500 Lyon, France
| | - Delphine Baetz
- University of Lyon, CARMEN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69500 Lyon, France
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Schleef M, Gonnot F, Pillot B, Leon C, Chanon S, Vieille-Marchiset A, Rabeyrin M, Bidaux G, Guebre-Egziabher F, Juillard L, Baetz D, Lemoine S. Mild Therapeutic Hypothermia Protects from Acute and Chronic Renal Ischemia-Reperfusion Injury in Mice by Mitigated Mitochondrial Dysfunction and Modulation of Local and Systemic Inflammation. Int J Mol Sci 2022; 23:ijms23169229. [PMID: 36012493 PMCID: PMC9409407 DOI: 10.3390/ijms23169229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 11/16/2022] Open
Abstract
Renal ischemia-reperfusion (IR) injury can lead to acute kidney injury, increasing the risk of developing chronic kidney disease. We hypothesized that mild therapeutic hypothermia (mTH), 34 °C, applied during ischemia could protect the function and structure of kidneys against IR injuries in mice. In vivo bilateral renal IR led to an increase in plasma urea and acute tubular necrosis at 24 h prevented by mTH. One month after unilateral IR, kidney atrophy and fibrosis were reduced by mTH. Evaluation of mitochondrial function showed that mTH protected against IR-mediated mitochondrial dysfunction at 24 h, by preserving CRC and OX-PHOS. mTH completely abrogated the IR increase of plasmatic IL-6 and IL-10 at 24 h. Acute tissue inflammation was decreased by mTH (IL-6 and IL1-β) in as little as 2 h. Concomitantly, mTH increased TNF-α expression at 24 h. One month after IR, mTH increased TNF-α mRNA expression, and it decreased TGF-β mRNA expression. We showed that mTH alleviates renal dysfunction and damage through a preservation of mitochondrial function and a modulated systemic and local inflammatory response at the acute phase (2–24 h). The protective effect of mTH is maintained in the long term (1 month), as it diminished renal atrophy and fibrosis, and mitigated chronic renal inflammation.
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Affiliation(s)
- Maxime Schleef
- CarMeN Laboratory, Univ Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
- Hospices Civils de Lyon, Médecine Intensive Réanimation, Hôpital Edouard Herriot, 69003 Lyon, France
| | - Fabrice Gonnot
- CarMeN Laboratory, Univ Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
| | - Bruno Pillot
- CarMeN Laboratory, Univ Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
| | - Christelle Leon
- CarMeN Laboratory, Univ Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
| | - Stéphanie Chanon
- CarMeN Laboratory, Univ Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
| | - Aurélie Vieille-Marchiset
- CarMeN Laboratory, Univ Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
| | - Maud Rabeyrin
- Hospices Civils de Lyon, Anatomopathologie, Groupement Hospitalier Est, 69500 Bron, France
| | - Gabriel Bidaux
- CarMeN Laboratory, Univ Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
| | - Fitsum Guebre-Egziabher
- CarMeN Laboratory, Univ Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
- Hospices Civils de Lyon, Néphrologie-HTA-Dialyse, Hôpital Edouard Herriot, 69003 Lyon, France
| | - Laurent Juillard
- CarMeN Laboratory, Univ Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
- Hospices Civils de Lyon, Néphrologie-HTA-Dialyse, Hôpital Edouard Herriot, 69003 Lyon, France
| | - Delphine Baetz
- CarMeN Laboratory, Univ Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
- Correspondence: (D.B.); (S.L.)
| | - Sandrine Lemoine
- CarMeN Laboratory, Univ Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France
- Hospices Civils de Lyon, Explorations Fonctionnelles Rénales, Hôpital Edouard Herriot, 69003 Lyon, France
- Correspondence: (D.B.); (S.L.)
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Vedere M, Lo Grasso M, Baetz D, Ferrera R. Evaluation of new solution for cardiac graft preservation on cellular model. Archives of Cardiovascular Diseases Supplements 2022. [DOI: 10.1016/j.acvdsp.2022.04.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Schleef M, Baetz D, Leon C, Pillot B, Bidaux G, Juillard L, Guebre-Egziabher F, Lemoine S. L’échographie rénale de contraste pour évaluer les modifications précoces et chroniques de perfusion rénale après ischémie-reperfusion chez la souris. Nephrol Ther 2021. [DOI: 10.1016/j.nephro.2021.07.098] [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: 10/20/2022]
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Gouriou Y, Alam MR, Harhous Z, Da Silva CC, Baetz D, Badawi S, Lefai E, Rieusset J, Durand A, Harisseh R, Gharib A, Ovize M, Bidaux G. Addendum: Gouriou et al. ANT2-Mediated ATP Import into Mitochondria Protects against Hypoxia Lethal Injury. Cells 2020, 9, 2542. Cells 2021. [PMCID: PMC8471286 DOI: 10.3390/cells10092171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The authors and the Cells Editorial Office would like to add the section “Materials and Methods”, which was missing in the original version [...]
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Affiliation(s)
- Yves Gouriou
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Correspondence: (Y.G.); (G.B.)
| | - Muhammad Rizwan Alam
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Department of Biochemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Zeina Harhous
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Gilbert and Rose-Marie Chagoury, School of Medicine, Lebanese American University, Byblos 4M8F+8X, Lebanon
| | - Claire Crola Da Silva
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Delphine Baetz
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Sally Badawi
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Etienne Lefai
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Jennifer Rieusset
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Annie Durand
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Rania Harisseh
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Abdallah Gharib
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Michel Ovize
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
| | - Gabriel Bidaux
- Univ-Lyon, CarMeN Laboratory, INSERM 1060, INRA 1397, Université Claude Bernard Lyon1, INSA Lyon, Oullins, France, IHU OPERA, Groupement Hospitalier EST, Bâtiment B13, 59 boulevard Pinel, F-69500 Bron, France; (M.R.A.); (Z.H.); (C.C.D.S.); (D.B.); (S.B.); (E.L.); (J.R.); (A.D.); (R.H.); (A.G.); (M.O.)
- Correspondence: (Y.G.); (G.B.)
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Schleef M, Baetz D, Leon C, Pillot B, Bidaux G, Juillard L, Guebre-Egziabher F, Lemoine S. MO336RENAL CONTRAST-ENHANCED ULTRASOUND (CEUS) TO EVALUATE EARLY AND CHRONIC MODIFICATIONS OF RENAL PERFUSION AND TO PREDICT RENAL DYSFUNCTION AFTER RENAL ISCHEMIA-REPERFUSION IN MICE. Nephrol Dial Transplant 2021. [DOI: 10.1093/ndt/gfab084.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background and Aims
Renal ischemia-reperfusion can lead to acute kidney injury (AKI), increasing the risk of developing chronic kidney disease (CKD) through inflammation and vascular lesions. Serum urea or creatinine level routinely used as diagnostic indices of renal function are always delayed from the onset of the disease. Therefore, we currently lack reliable markers to early detect AKI, especially in animals.
We aimed to show that non-invasive renal contrast-enhanced ultrasound (CEUS) could be a reliable tool to assess early and chronic changes of renal perfusion after renal ischemia-reperfusion.
Method
Male C57BL6 mice underwent 15 minutes of unilateral renal ischemia by clamping of the left renal vascular pedicle (n = 7), or a sham procedure (n = 3), under inhaled general anesthesia by Sevoflurane. A renal ultrasound was performed on the left ischemic kidney at baseline 1 week before the surgery, then, 20 minutes after reperfusion to assess early modifications of renal perfusion, and 1 month after reperfusion to follow chronic modifications. CEUS was performed in supine position by using a high-resolution ultrasonic imaging system (VEVO 3100 Fujifilm Visualsonics, Toronto, Canada) with a MX550D probe fixed in place with an iron support, ensuring the constant imaging plane throughout acquisition. First, a continuous infusion of microbubbles (VS-11913, Fujifilm Visualsonics, Toronto, Canada) was done through the tail vein, then a high mechanical index burst was given to destroy microbubbles when the contrast enhancement had reached a steady state, and finally, low mechanical-index imaging mode was used until, and 30 sec after the contrast agent concentration reached the plateau. Images were recorded and were analyzed using the “destruction-replenishment” fitting model of the Vevo LAB software (Fujifilm Visualsonics, Toronto, Canada). Renal perfusion was estimated by the total renal Blood Volume (rBV) parameter and was expressed as percentage of the baseline value for each animal. Renal function was also assessed by serum urea concentration 1 month after reperfusion, and the long axis lengths of both the kidneys were measured ex vivo after the mice were euthanized.
Results
Renal perfusion of the ischemic kidney measured by CEUS was significantly decreased as soon as 20 minutes of reperfusion compared to baseline (median 28,8% of baseline value; interquartiles [20,1 – 69,8%]). 1 month after reperfusion, renal perfusion recovered partially but was still significantly decreased compared to baseline (median 79,9% of baseline value; interquartiles [52,8 – 99,9%]) (Figure A). In sham operated mice, renal perfusion did not differ from baseline at 20 minutes or 1 month (p > 0.05).
The renal function, assessed by serum urea, was mildly but significantly impaired 1 month after ischemia-reperfusion compared with sham (median serum urea 9,8 vs. 7,6 mmol/L) (p = 0.02), and this was consistent with the observed kidney atrophy in the ischemic group when compared to the contralateral kidney (median long axis length 7,5 vs 10,8 mm) (p = 0.03).
Moreover, the decrease of renal perfusion 20 minutes after reperfusion was significantly correlated with the impairment of renal perfusion 1 month after reperfusion (Pearson r = 0.836, p = 0.005) and with the serum urea level at 1 month (Pearson r = -0.710, p = 0.03) (Figure B-C).
Conclusion
Renal CEUS was able to detect early impairment of renal perfusion as soon as 20 minutes after 15 minutes of renal ischemia in mice, and perfusion was still decreased 1 month after reperfusion, compared to baseline. This early impairment of perfusion was correlated with the chronic decrease of renal perfusion and renal function 1 month after reperfusion. This was also associated with a significant kidney atrophy. CEUS is an interesting non-invasive tool to assess renal lesions dynamically after ischemia-reperfusion.
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Affiliation(s)
- Maxime Schleef
- B13 Opera / Inserm U1060 Carmen, Bron, France
- Hospital Édouard Herriot, Nephrology Department, Lyon, France
| | | | | | | | | | - Laurent Juillard
- B13 Opera / Inserm U1060 Carmen, Bron, France
- Hospital Édouard Herriot, Nephrology Department, Lyon, France
| | - Fitsum Guebre-Egziabher
- B13 Opera / Inserm U1060 Carmen, Bron, France
- Hospital Édouard Herriot, Nephrology Department, Lyon, France
| | - Sandrine Lemoine
- B13 Opera / Inserm U1060 Carmen, Bron, France
- Hospital Édouard Herriot, Nephrology Department, Lyon, France
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9
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Schleef M, Baetz D, Pillot B, Leon C, Gallo-Bona N, Ovize M, Juillard L, Guebre-Egziabher F, Lemoine S. P0536HYPOTHERMIA DURING RENAL ISCHEMIA-REPERFUSION IN MICE: A PROTECTIVE EFFECT ON RENAL AND MITOCHONDRIAL FUNCTIONS. Nephrol Dial Transplant 2020. [DOI: 10.1093/ndt/gfaa142.p0536] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background and Aims
Renal ischemia reperfusion (RIR) can induce mitochondrial stress triggering cell death and eventually leading to acute kidney injury (AKI). It has been suggested that mild hypothermia could be protective in RIR without clear underlying mechanisms. We aimed to show that mild hypothermia (34°C) during RIR protects renal mitochondrial function and prevents AKI.
Method
Male C57BL6 mice were assigned to 4 groups: normothermic ischemic (RIR-37°C) group (n=14) and hypothermic ischemic (RIR-34°C) group (n=14) with body temperature maintained at respectively 37°C or 34°C during 20 minutes of renal ischemia by bilateral renal clamping under general anesthesia; normothermic sham (Sham-37°C) group (n=10) and hypothermic sham (Sham-34°C) group (n=10) with only anesthesia and laparotomy at 37°C or 34°C respectively. Renal function (serum urea concentration) and isolated renal mitochondria function (capacity of mitochondria to retain calcium i.e. calcic retention capacity (CRC), and oxidative phosphorylation capacity of electron transport chain complexes (complex I, II and IV)) were assessed 2 hours and 24 hours after reperfusion. All animal procedures were approved by local Ethics Committee. Data are presented as median with IQR.
Results
All the parameters monitored were not modified by the temperature in the sham groups, and there was no mortality in those 2 groups. Mortality was 33% in the RIR-37°C group and 11% in the RIR-34°C group 24 hours after reperfusion (p=0.58).
Renal ischemia was responsible for a significant increase of serum urea level 2 hours after reperfusion at 37°C [18.7 (17.3–19.0) mmol/L] compared to sham groups (p=0.02), whereas no significant increase was observed in the RIR-34°C group. After 24 hours of reperfusion serum urea level was improved in the RIR-34°C group [22.7 (11.5–42.0) mmol/L] compared to RIR-37°C [60.8 (58.0–69.7) mmol/L, p=0.001].
CRC was not modified by RIR after 2 hours of reperfusion in both groups. CRC was preserved 24 hours after reperfusion in the RIR-34°C group [260 (210–320) nmol Ca2+/mg protein] with no difference compared to Sham-37°C [320 (280–360) nmol Ca2+/mg protein p=0.18] whereas CRC was significantly decreased in the RIR-37°C group compared to Sham-37°C [120 (0–130) vs 320 (280–360) nmol Ca2+/mg protein p=0.004).
Complexes I, II and IV were lowered after 2 hours of reperfusion in the RIR-37°C group (p<0.05), and complexes II and IV activities remained altered 24 hours after reperfusion, compared to Sham-37°C (p=0.009 and p=0.02 respectively). In the RIR-34°C group, complexes I, II and IV activities were preserved 2 hours after reperfusion but complex I activity decreased 24 hours after reperfusion. We found significant difference between complexes II and IV activities between IRI-34°C and RIR-37°C.
Conclusion
Mild hypothermia (34°C) during RIR significantly protected renal mitochondrial respiration and mitochondrial stress, associated with a preserved renal function after 2 hours of reperfusion and an improved renal function 24 hours after reperfusion compared to normothermic mice (37°C).
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Affiliation(s)
- Maxime Schleef
- B13 Opera / Inserm U1060 Carmen, Université Lyon 1, Bron, France
- Edouard Herriot Hospital, Hospices Civils de Lyon, Nephrology Department, Lyon, France
| | - Delphine Baetz
- B13 Opera / Inserm U1060 Carmen, Université Lyon 1, Bron, France
| | - Bruno Pillot
- B13 Opera / Inserm U1060 Carmen, Université Lyon 1, Bron, France
| | - Christelle Leon
- B13 Opera / Inserm U1060 Carmen, Université Lyon 1, Bron, France
| | | | - Michel Ovize
- B13 Opera / Inserm U1060 Carmen, Université Lyon 1, Bron, France
- Louis Pradel Hospital, Hospices Civils de Lyon, Cardiovascular Functional Explorations Department, Bron, France
| | - Laurent Juillard
- B13 Opera / Inserm U1060 Carmen, Université Lyon 1, Bron, France
- Edouard Herriot Hospital, Hospices Civils de Lyon, Nephrology Department, Lyon, France
| | - Fitsum Guebre-Egziabher
- B13 Opera / Inserm U1060 Carmen, Université Lyon 1, Bron, France
- Edouard Herriot Hospital, Hospices Civils de Lyon, Nephrology Department, Lyon, France
| | - Sandrine Lemoine
- B13 Opera / Inserm U1060 Carmen, Université Lyon 1, Bron, France
- Edouard Herriot Hospital, Hospices Civils de Lyon, Renal Functional Explorations Department, Lyon, France
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10
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Bochaton T, Bernelin H, Paccalet A, Crola Da Silva C, Baetz D, Genot N, Prieur C, Tomasevic D, Jossan C, Amaz C, Dufay N, Rioufol G, Bonnefoy-Cudraz E, Mewton N, Ovize M. P1681Daytime variation of infarct size in STEMI patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T Bochaton
- Hospital Louis Pradel of Bron, Lyon, France
| | - H Bernelin
- Hospital Louis Pradel of Bron, Lyon, France
| | - A Paccalet
- Research Laboratory CarMEN of Lyon, Lyon, France
| | | | - D Baetz
- Research Laboratory CarMEN of Lyon, Lyon, France
| | - N Genot
- Hospital Louis Pradel of Bron, Lyon, France
| | - C Prieur
- Hospital Louis Pradel of Bron, Lyon, France
| | | | - C Jossan
- Civils Hospices of Lyon, Centre d'Investigation Clinique, Lyon, France
| | - C Amaz
- Civils Hospices of Lyon, Centre d'Investigation Clinique, Lyon, France
| | - N Dufay
- Civils Hospices of Lyon, Centre de Ressources Biologiques, Lyon, France
| | - G Rioufol
- Hospital Louis Pradel of Bron, Lyon, France
| | | | - N Mewton
- Hospital Louis Pradel of Bron, Lyon, France
| | - M Ovize
- Hospital Louis Pradel of Bron, Lyon, France
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11
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Villedieu C, Harisseh R, Harhous Z, Pillot B, Augeul L, Bochaton T, Gharib A, Baetz D, Ovize M. Postconditioning failure in old mice: Protein acetylation and mitochondrial sirtuins. Archives of Cardiovascular Diseases Supplements 2018. [DOI: 10.1016/j.acvdsp.2018.02.026] [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: 10/17/2022]
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12
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Tronchere H, Cinato M, Timotin A, Guitou L, Villedieu C, Thibault H, Baetz D, Payrastre B, Valet P, Parini A, Kunduzova O, Boal F. Inhibition of PIKfyve prevents myocardial apoptosis and hypertrophy through activation of SIRT3 in obese mice. EMBO Mol Med 2018; 9:770-785. [PMID: 28396567 PMCID: PMC5452048 DOI: 10.15252/emmm.201607096] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PIKfyve is an evolutionarily conserved lipid kinase that regulates pleiotropic cellular functions. Here, we identify PIKfyve as a key regulator of cardiometabolic status and mitochondrial integrity in chronic diet‐induced obesity. In vitro, we show that PIKfyve is critical for the control of mitochondrial fragmentation and hypertrophic and apoptotic responses to stress. We also provide evidence that inactivation of PIKfyve by the selective inhibitor STA suppresses excessive mitochondrial ROS production and apoptosis through a SIRT3‐dependent pathway in cardiomyoblasts. In addition, we report that chronic STA treatment improves cardiometabolic profile in a mouse model of cardiomyopathy linked to obesity. We provide evidence that PIKfyve inhibition reverses obesity‐induced cardiac mitochondrial damage and apoptosis by activating SIRT3. Furthermore, treatment of obese mice with STA improves left ventricular function and attenuates cardiac hypertrophy. In contrast, STA is not able to reduce isoproterenol‐induced cardiac hypertrophy in SIRT3.KO mice. Altogether, these results unravel a novel role for PIKfyve in obesity‐associated cardiomyopathy and provide a promising therapeutic strategy to combat cardiometabolic complications in obesity.
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Affiliation(s)
- Helene Tronchere
- INSERM U1048 I2MC, Toulouse, Cedex 4, France.,Université Paul Sabatier, Toulouse, France
| | - Mathieu Cinato
- INSERM U1048 I2MC, Toulouse, Cedex 4, France.,Université Paul Sabatier, Toulouse, France
| | - Andrei Timotin
- INSERM U1048 I2MC, Toulouse, Cedex 4, France.,Université Paul Sabatier, Toulouse, France
| | - Laurie Guitou
- INSERM U1048 I2MC, Toulouse, Cedex 4, France.,Université Paul Sabatier, Toulouse, France
| | - Camille Villedieu
- CarMeN Laboratory, Inserm U1060, Univ-Lyon, Université Claude Bernard Lyon 1, Bron, France
| | - Helene Thibault
- CarMeN Laboratory, Inserm U1060, Univ-Lyon, Université Claude Bernard Lyon 1, Bron, France
| | - Delphine Baetz
- CarMeN Laboratory, Inserm U1060, Univ-Lyon, Université Claude Bernard Lyon 1, Bron, France
| | - Bernard Payrastre
- INSERM U1048 I2MC, Toulouse, Cedex 4, France.,Université Paul Sabatier, Toulouse, France
| | - Philippe Valet
- INSERM U1048 I2MC, Toulouse, Cedex 4, France.,Université Paul Sabatier, Toulouse, France
| | - Angelo Parini
- INSERM U1048 I2MC, Toulouse, Cedex 4, France.,Université Paul Sabatier, Toulouse, France
| | - Oksana Kunduzova
- INSERM U1048 I2MC, Toulouse, Cedex 4, France.,Université Paul Sabatier, Toulouse, France
| | - Frederic Boal
- INSERM U1048 I2MC, Toulouse, Cedex 4, France .,Université Paul Sabatier, Toulouse, France
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13
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Bochaton T, Mewton N, Thiam ND, Lavocat F, Baetz D, Dufay N, Prieur C, Bonnefoy-Cudraz E, Miossec P, Ovize M. Early kinetics of serum Interleukine-17A and infarct size in patients with reperfused acute ST-elevated myocardial infarction. PLoS One 2017; 12:e0188202. [PMID: 29166391 PMCID: PMC5699816 DOI: 10.1371/journal.pone.0188202] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 11/02/2017] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Recently, it was shown that interleukin-17A (IL-17A) is involved in the pathophysiology of reperfusion injury and associated with infarct size (IS) in experimental models of myocardial infarction. Our aim was to evaluate whether the IL-17A serum level and the IL-17A active fraction was correlated with IS in humans. METHODS 101 patients presenting with a ST-elevated Myocardial Infarction (STEMI) referred for primary percutaneous coronary intervention (PPCI) and 10 healthy controls were included. For each participant, blood samples at admission (H0) and 4 hours after admission (H4) were collected. IL-17A serum levels were assessed using ELISA and the active fraction was assessed with a functional test. IS was determined by peak troponin and peak CK levels for every patient and by contrast-enhanced cardiac magnetic resonance (ce-CMR) for 20 patients. RESULTS The IL-17A serum level was significantly increased in STEMI patients compared to healthy controls, (0.9 pg/mL IQR [0.0-3.2] at H0 and 1.0 pg/mL IQR [0.2-2.8] at H4 versus 0.2 pg/mL IQR [0.0-0.7] for healthy controls; p<0.005). At either time points, IL-17A levels did not correlate with IS as measured by peak troponin, peak CK pr ce-CMR. Also, no correlation was found between the active fraction of IL-17A and IS. CONCLUSION Serum IL-17A level is significantly increased in patients at the early phase of acute MI compared to healthy controls. However, the level of IL-17A in the early hours after reperfusion does not correlate with IS.
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Affiliation(s)
- Thomas Bochaton
- INSERM U1060, CarMeN laboratory, Université de Lyon, Groupement Hospitalier Est, Bron, France
- Unité de Soins Intensifs Cardiologiques, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - Nathan Mewton
- Service d’explorations fonctionnelles Cardiovasculaires, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
- Centre d’investigation clinique de Lyon, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - NDieme Thiam
- Immunogénomique et Inflammation, Hôpital Edouard Herriot Pavillon P, Lyon, France
| | - Fabien Lavocat
- Immunogénomique et Inflammation, Hôpital Edouard Herriot Pavillon P, Lyon, France
| | - Delphine Baetz
- INSERM U1060, CarMeN laboratory, Université de Lyon, Groupement Hospitalier Est, Bron, France
| | - Nathalie Dufay
- NeuroBioTec, Groupement Hospitalier Est, Hôpital Neurologique Pierre Wertheimer, Lyon, France
| | - Cyril Prieur
- Unité de Soins Intensifs Cardiologiques, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - Eric Bonnefoy-Cudraz
- INSERM U1060, CarMeN laboratory, Université de Lyon, Groupement Hospitalier Est, Bron, France
- Unité de Soins Intensifs Cardiologiques, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - Pierre Miossec
- Immunogénomique et Inflammation, Hôpital Edouard Herriot Pavillon P, Lyon, France
| | - Michel Ovize
- INSERM U1060, CarMeN laboratory, Université de Lyon, Groupement Hospitalier Est, Bron, France
- Service d’explorations fonctionnelles Cardiovasculaires, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
- Centre d’investigation clinique de Lyon, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
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14
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Lemoine S, Pillot B, Augeul L, Rabeyrin M, Varennes A, Normand G, Baetz D, Ovize M, Juillard L. Dose and timing of injections for effective cyclosporine A pretreatment before renal ischemia reperfusion in mice. PLoS One 2017; 12:e0182358. [PMID: 28796779 PMCID: PMC5552114 DOI: 10.1371/journal.pone.0182358] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 07/17/2017] [Indexed: 11/26/2022] Open
Abstract
Background There is experimental evidence that lethal ischemia-reperfusion injury (IRI) is largely due to mitochondrial permeability transition pore (mPTP) opening, which can be prevented by cyclosporine A (CsA). The aim of our study is to show that a higher dose of CsA (10 mg/kg) injected just before ischemia or a lower dose of CsA (3 mg/kg) injected further in advance of ischemia (1 h) protects the kidneys and improves mitochondrial function. Methods All mice underwent a right unilateral nephrectomy followed by 30 min clamping of the left renal artery. Mice in the control group did not receive any pharmacological treatment. Mice in the three groups treated by CsA were injected at different times and with different doses, namely 3 mg/kg 1 h or 10 min before ischemia or 10 mg/kg 10 min before ischemia. After 24 h of reperfusion, the plasma creatinine level were measured, the histological score was assessed and mitochondria were isolated to calculate the calcium retention capacity (CRC) and level of oxidative phosphorylation. Results Mortality and renal function was significantly higher in the CsA 10 mg/kg-10 min and CsA 3mg/kg-1 h groups than in the CsA 3mg/kg-10 min group. Likewise, the CRC was significantly higher in the former two groups than in the latter, suggesting that the improved renal function was due to a longer delay in the opening of the mPTP. Oxidative phosphorylation levels were also higher 24 h after reperfusion in the protected groups. Conclusions Our results suggest that the protection afforded by CsA is likely limited by its availability. The dose and timing of the injections are therefore crucial to ensure that the treatment is effective, but these findings may prove challenging to apply in practice.
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Affiliation(s)
- Sandrine Lemoine
- Université Lyon1, Inserm 1060CarMeN, Lyon, France
- Renal function unit, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
- Nephrology department, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
- * E-mail:
| | - Bruno Pillot
- Université Lyon1, Inserm 1060CarMeN, Lyon, France
| | | | - Maud Rabeyrin
- Anatomopathology, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
| | - Annie Varennes
- Biology department, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
| | - Gabrielle Normand
- Université Lyon1, Inserm 1060CarMeN, Lyon, France
- Nephrology department, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
| | | | - Michel Ovize
- Université Lyon1, Inserm 1060CarMeN, Lyon, France
- Cardiovascular Explorations, Hospices Civils de Lyon, Louis Pradel Hospital, Lyon, France
| | - Laurent Juillard
- Université Lyon1, Inserm 1060CarMeN, Lyon, France
- Nephrology department, Edouard Herriot Hospital, Hospices Civils de Lyon, Lyon, France
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15
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Villedieu C, Pillot B, Gallo-Bona N, Gharib A, Baetz D, Ovize M. SIRT3-dependent ischemic post-conditioning fails at reducing infarct size in old mice. Archives of Cardiovascular Diseases Supplements 2017. [DOI: 10.1016/s1878-6480(17)30390-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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Bochaton T, Paccalet A, Baetz D, Da Silva CC, Ovize M. Cyclophilin D is a regulator of NLRP3 inflammasome. Archives of Cardiovascular Diseases Supplements 2017. [DOI: 10.1016/s1878-6480(17)30388-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Villedieu C, Bochaton T, Pillot B, Augeul L, Baetz D, Ovize M, Gharib A. 0433 : Sirtuin 3: does cardiomyocyte care? Archives of Cardiovascular Diseases Supplements 2016. [DOI: 10.1016/s1878-6480(16)30411-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Bochaton T, Crola-Da-Silva C, Pillot B, Villedieu C, Ferreras L, Alam MR, Thibault H, Strina M, Gharib A, Ovize M, Baetz D. Inhibition of myocardial reperfusion injury by ischemic postconditioning requires sirtuin 3-mediated deacetylation of cyclophilin D. J Mol Cell Cardiol 2015; 84:61-9. [PMID: 25871830 DOI: 10.1016/j.yjmcc.2015.03.017] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [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: 11/05/2014] [Revised: 03/26/2015] [Accepted: 03/27/2015] [Indexed: 01/10/2023]
Abstract
RATIONALE How ischemic postconditioning can inhibit opening of the mitochondrial permeability transition pore (PTP) and subsequent cardiac myocytes death at reperfusion remains unknown. Recent studies have suggested that de-acetylation of cyclophilin D (CyPD) by sirtuin 3 (SIRT3) can modulate its binding to the PTP. OBJECTIVE The aim of the present study was to examine whether ischemic postconditioning (PostC) might activate SIRT3 and consequently prevent lethal myocardial reperfusion injury through a deacetylation of CyPD. METHODS AND RESULTS Using hypoxia-reoxygenation (H/R) in H9C2 cells, we showed that SIRT3 overexpression prevented CyPD acetylation, limited PTP opening and reduced cell death by 24%. In vitro modification of the CyPD acetylation status in MEFs by site-directed mutagenesis altered capacity of PTP opening by calcium. Calcium Retention Capacity (CRC) was significantly decreased with CyPD-KQ that mimics acetylated protein compared with CyPD WT (871 ± 266 vs 1193 ± 263 nmoles Ca(2+)/mg protein respectively). Cells expressing non-acetylable CyPD mutant (CyPD-KR) displayed 20% decrease in cell death compared to cells expressing CyPD WT after H/R. Correspondingly, in mice we showed that cardiac ischemic postconditioning could not reduce infarct size and CyPD acetylation in SIRT3 KO mice, and was unable to restore CRC in mitochondria as it is observed in WT mice. CONCLUSIONS Our study suggests that the increased acetylation of CyPD following myocardial ischemia-reperfusion facilitates PTP opening and subsequent cell death. Therefore ischemic postconditioning might prevent lethal reperfusion injury through an increased SIRT3 activity and subsequent attenuation of CyPD acetylation at reperfusion.
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Affiliation(s)
- T Bochaton
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France; Hospices Civils de Lyon, Hôpital Louis Pradel, Service d'Explorations Fonctionnelles Cardiovasculaires & CIC de Lyon, F-69394 Lyon, France
| | - C Crola-Da-Silva
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - B Pillot
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - C Villedieu
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - L Ferreras
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - M R Alam
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - H Thibault
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France; Hospices Civils de Lyon, Hôpital Louis Pradel, Service d'Explorations Fonctionnelles Cardiovasculaires & CIC de Lyon, F-69394 Lyon, France
| | - M Strina
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - A Gharib
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - M Ovize
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France; Hospices Civils de Lyon, Hôpital Louis Pradel, Service d'Explorations Fonctionnelles Cardiovasculaires & CIC de Lyon, F-69394 Lyon, France
| | - D Baetz
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France.
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19
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Alam MR, Baetz D, Ovize M. Cyclophilin D and myocardial ischemia-reperfusion injury: a fresh perspective. J Mol Cell Cardiol 2015; 78:80-9. [PMID: 25281838 DOI: 10.1016/j.yjmcc.2014.09.026] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [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: 07/20/2014] [Revised: 09/23/2014] [Accepted: 09/25/2014] [Indexed: 01/06/2023]
Abstract
Reperfusion is characterized by a deregulation of ion homeostasis and generation of reactive oxygen species that enhance the ischemia-related tissue damage culminating in cell death. The mitochondrial permeability transition pore (mPTP) has been established as an important mediator of ischemia-reperfusion (IR)-induced necrotic cell death. Although a handful of proteins have been proposed to contribute in mPTP induction, cyclophilin D (CypD) remains its only bona fide regulatory component. In this review we summarize existing knowledge on the involvement of CypD in mPTP formation in general and its relevance to cardiac IR injury in specific. Moreover, we provide insights of recent advancements on additional functions of CypD depending on its interaction partners and post-translational modifications. Finally we emphasize the therapeutic strategies targeting CypD in myocardial IR injury. This article is part of a Special Issue entitled "Mitochondria: From Basic Mitochondrial Biology to Cardiovascular Disease".
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Affiliation(s)
- Muhammad Rizwan Alam
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - Delphine Baetz
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France
| | - Michel Ovize
- INSERM U1060, CarMeN Laboratory, Claude Bernard Lyon 1 University, F-69373 Lyon, France; Hospices Civils de Lyon, Hôpital Louis Pradel, Service d'Explorations Fonctionnelles Cardiovasculaires & CIC de Lyon, F-69394 Lyon, France.
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20
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Belouze M, Sibille B, Rey B, Roussel D, Romestaing C, Teulier L, Baetz D, Koubi H, Servais S, Duchamp C. Leanness of Lou/C rats does not require higher thermogenic capacity of brown adipose tissue. Physiol Behav 2011; 104:893-9. [DOI: 10.1016/j.physbeh.2011.05.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Revised: 05/20/2011] [Accepted: 05/24/2011] [Indexed: 01/10/2023]
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21
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Ségalen C, Longnus SL, Baetz D, Counillon L, Van Obberghen E. 5-aminoimidazole-4-carboxamide-1-beta-D-ribofuranoside reduces glucose uptake via the inhibition of Na+/H+ exchanger 1 in isolated rat ventricular cardiomyocytes. Endocrinology 2008; 149:1490-8. [PMID: 18187546 DOI: 10.1210/en.2007-1326] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [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] [Indexed: 01/16/2023]
Abstract
AMP-activated protein kinase (AMPK) is an energy-sensing enzyme that is activated by an increased AMP/ATP ratio. AMPK is now well recognized to induce glucose uptake in skeletal muscle and heart. 5-Aminoimidazole-4-carboxamide-1-beta-d-ribofuranoside (AICAR) is phosphorylated to form the AMP analog ZMP, which activates AMPK. Its effects on glucose transport appear to be tissue specific. The purpose of our study was to examine the effect of AICAR on insulin-induced glucose uptake in adult rat ventricular cardiomyocytes. We studied isolated adult rat ventricular cardiomyocytes treated or not with the AMPK activators AICAR and metformin and, subsequently, with insulin or not. Insulin action was investigated by determining deoxyglucose uptake, insulin receptor substrate-1- or -2-associated phosphatidylinositol 3-kinase activity and protein kinase B (PKB) cascade using antibodies to PKB, glycogen synthase kinase-3, and Akt substrate of 160 kDa. Intracellular pH was evaluated using the fluorescent pH-sensitive dye 2',7'-bis (2-carboxyethyl)-5(6)-carboxyfluorescein (BCECF) and Na(+)/H(+) exchanger 1 (NHE1) activity was assessed using the NH(4)(+) prepulse method. Our key findings are as follows. AICAR and metformin enhance insulin signaling downstream of PKB. Metformin potentiates insulin-induced glucose uptake, but surprisingly, AICAR inhibits both basal and insulin-induced glucose uptake. Moreover, we found that AICAR decreases intracellular pH, via inhibition of NHE1. In conclusion, AMPK potentiates insulin signaling downstream of PKB in isolated cardiac myocytes, consistent with findings in the heart in vivo. Furthermore, AICAR inhibits basal and insulin-induced glucose uptake in isolated cardiac myocytes via the inhibition of NHE1 and the subsequent reduction of intracellular pH. Importantly, AICAR exerts these effects in a manner independent of AMPK activation.
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Affiliation(s)
- Coralie Ségalen
- Faculté de Medecine, Institut National de la Santé et de la Recherche Médicale Unité 907, Avenue de Valombrose, Nice, France
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22
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Shaw J, Baetz D, Yurkova N, Aguilar F, Zhang T, Kirshenbaum L. Casein kinase 2 dependent regulation of the death protein Bnip3 promotes cell survival of ventricular myocytes. J Mol Cell Cardiol 2008. [DOI: 10.1016/j.yjmcc.2008.02.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Darmellah A, Baetz D, Prunier F, Tamareille S, Rücker-Martin C, Feuvray D. Enhanced activity of the myocardial Na+/H+ exchanger contributes to left ventricular hypertrophy in the Goto-Kakizaki rat model of type 2 diabetes: critical role of Akt. Diabetologia 2007; 50:1335-44. [PMID: 17429605 DOI: 10.1007/s00125-007-0628-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [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: 08/23/2006] [Accepted: 01/07/2007] [Indexed: 11/24/2022]
Abstract
AIMS/HYPOTHESIS Diabetes mellitus is a strong risk factor for the development of heart failure, and left ventricular (LV) hypertrophy has been detected in a significant proportion of diabetic patients. Because several studies have suggested that the Na(+)/H(+) exchanger (NHE1) plays a part in the molecular mechanisms involved in cardiac hypertrophy, we investigated its activity and its role in LV myocytes from the Goto-Kakizaki (GK) rat model of type 2 diabetes. MATERIALS AND METHODS Fluorometric measurements were used to assess sarcolemmal NHE1 activity in isolated myocytes. NHE1 levels and the possible molecular pathways driving and/or related to NHE1 activity were investigated in relation to the diabetic LV phenotype. RESULTS Enhanced NHE1 activity was associated with LV myocyte hypertrophy. This occurred in the absence of any change in NHE1 protein levels; however, activation of several molecular pathways related to NHE1 activity was demonstrated. Thus, phosphorylation of the extracellular signal-regulated protein kinase (Erk), of the protein kinase Akt (also known as protein kinase B) and of the Ca(2+)/calmodulin-dependent kinase II was increased in GK LV myocytes. Intracellular Ca(2+) levels were also increased. Chronic treatment (10-12 weeks) with the NHE1 inhibitor cariporide normalised NHE1 activity, decreased [Formula: see text] levels and reduced LV myocyte hypertrophy. Moreover, among the various activated pathways, cariporide treatment markedly reduced Akt activity only. CONCLUSIONS/INTERPRETATION These findings indicate that activation of the Akt pathway represents a likely mechanism mediating the hypertrophic effect of increased NHE1 activity in the GK model of type 2 diabetes.
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Affiliation(s)
- A Darmellah
- Marie Lannelongue Hospital, UMR CNRS 8078-University of Paris South XI, 133 Avenue de la Résistance, 92350 Le Plessis Robinson, France
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24
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Shaw J, Zhang T, Rzeszutek M, Yurkova N, Baetz D, Davie JR, Kirshenbaum LA. Transcriptional Silencing of the Death Gene BNIP3 by Cooperative Action of NF-κB and Histone Deacetylase 1 in Ventricular Myocytes. Circ Res 2006; 99:1347-54. [PMID: 17082476 DOI: 10.1161/01.res.0000251744.06138.50] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [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] [Indexed: 11/16/2022]
Abstract
Earlier we identified a survival role for NF-κB in ventricular myocytes, however, the underlying mechanism was undefined. In this report we provide new mechanistic evidence that the hypoxia-inducible death factor BNIP3 is transcriptionally silenced by NF-κB through a mechanism that involves the cooperative actions of HDAC1. Activation of the NF-κB signaling pathway in ventricular myocytes suppressed basal and hypoxia-inducible BNIP3 gene activity. Basal Bnip3 gene expression was increased in cells derived from p65
−/−
deficient mice. The histone deacetylase (HDAC) inhibitor Trichostatin A (TSA 10 nM) suppressed the inhibitory actions of NF-κB on Bnip3 gene transcription. Basal and hypoxia- induced Bnip3 transcription was repressed by wild type but not a catalytically inactive mutant of HDAC1. Immunoprecipitation assays verified interaction of HDAC1 with wild type p65 NF-κB and mutations of p65 defective for transactivation in ventricular myocytes. Deletion analysis revealed canonical NF-κB elements within the Bnip3 promoter to be important for repression of Bnip3 gene expression by HDAC1. Further, the ability of HDAC1 to repress Bnip3 gene transcription was lost in cells derived from p65
−/−
deficient mice but was restored by repletion of p65 NF-κB into p65
−/−
cells. Mutations of p65 NF-κB defective for DNA binding but not for transactivation abrogated the inhibitory actions of HDAC1 on the Bnip3 gene transcription. Together, our findings provide new mechanistic insight into the cytoprotective actions conferred by NF-κB that extend to the active transcriptional repression of the death factor Bnip3 through a mechanism that is mutually dependent on HDAC-1.
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Affiliation(s)
- James Shaw
- Institute of Cardiovascular Sciences, St. Boniface General Hospital Research Centre Rm. 3016, 351 Taché Avenue, Winnipeg, Manitoba, Canada, R2H 2A6.
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25
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Javadov S, Baetz D, Rajapurohitam V, Zeidan A, Kirshenbaum LA, Karmazyn M. Antihypertrophic effect of Na+/H+ exchanger isoform 1 inhibition is mediated by reduced mitogen-activated protein kinase activation secondary to improved mitochondrial integrity and decreased generation of mitochondrial-derived reactive oxygen species. J Pharmacol Exp Ther 2006; 317:1036-43. [PMID: 16513848 DOI: 10.1124/jpet.105.100107] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Although inhibition of Na+/H+ exchanger isoform 1 (NHE-1) reduces cardiomyocyte hypertrophy, the mechanisms underlying this effect are not known. Recent evidence suggests that this may be associated with improved mitochondrial function. To understand the mechanistic bases for mitochondrial involvement in the antihypertrophic effect of NHE-1 inhibition, we examined the effect of the NHE-1-specific inhibitor N-[2-methyl-4,5-bis(methylsulphonyl)-benzoyl]-guanidine, hydrochloride (EMD, EMD87580; 5 microM) on the hypertrophic phenotype, mitogen-activated protein kinase (MAPK) activity, mitochondrial membrane potential (Deltapsim), permeability transition (MPT) pore opening, and superoxide generation in phenylephrine (PE)-treated neonatal rat cardiomyocytes. EMD significantly suppressed markers of cell hypertrophy, including cell surface area and gene expression of atrial natriuretic peptide and alpha-skeletal actin. EMD inhibited the PE-induced MPT pore opening, prevented the loss in Deltapsim, and attenuated superoxide generation induced by PE. Moreover, the activation of p38 MAPK (p38) and extracellular signal-regulated kinase (ERK) 1/2 MAPKs induced by PE was significantly attenuated in the presence of EMD as well as the antioxidant catalase. To examine the role of MPT and mitochondrial Ca2+ uniport in parallel with EMD, the effects of cyclosporin A (0.2 microM) and ruthenium red (10 microM) were evaluated. Both agents significantly attenuated PE-induced hypertrophy and inhibited both mitochondrial dysfunction and p38 and ERK1/2 MAPK activation. Our results suggest a novel mechanism for attenuation of the hypertrophic phenotype by NHE-1 inhibition that is mediated by a reduction in PE-induced MAPK activation and superoxide production secondary to improved mitochondrial integrity.
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Affiliation(s)
- Sabzali Javadov
- Department of Physiology and Pharmacology, University of Western Ontario, London, ON, N6A 5C1, Canada
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26
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Anzawa R, Bernard M, Tamareille S, Baetz D, Confort-Gouny S, Gascard JP, Cozzone P, Feuvray D. Intracellular sodium increase and susceptibility to ischaemia in hearts from type 2 diabetic db/db mice. Diabetologia 2006; 49:598-606. [PMID: 16425033 DOI: 10.1007/s00125-005-0091-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [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: 06/08/2005] [Accepted: 10/19/2005] [Indexed: 01/11/2023]
Abstract
AIMS/HYPOTHESIS An important determinant of sensitivity to ischaemia is altered ion homeostasis, especially disturbances in intracellular Na(+) (Na(i)(+)) handling. As no study has so far investigated this in type 2 diabetes, we examined susceptibility to ischaemia-reperfusion in isolated hearts from diabetic db/db and control db/+ mice and determined whether and to what extent the amount of (Na(i)(+)) increase during a transient period of ischaemia could contribute to functional alterations upon reperfusion. METHODS Isovolumic hearts were exposed to 30-min global ischaemia and then reperfused. (23)Na nuclear magnetic resonance (NMR) spectroscopy was used to monitor[Formula: see text] and (31)P NMR spectroscopy to monitor intracellular pH (pH(i)). RESULTS A higher duration of ventricular tachycardia and the degeneration of ventricular tachycardia into ventricular fibrillation were observed upon reperfusion in db/db hearts. The recovery of left ventricular developed pressure was reduced. The increase in[Formula: see text] induced by ischaemia was higher in db/db hearts than in control hearts, and the rate of pH(i) recovery was increased during reperfusion. The inhibition of Na(+)/H(+) exchange by cariporide significantly reduced (Na(i)(+)) gain at the end of ischaemia. This was associated with a lower incidence of ventricular tachycardia in both heart groups, and with an inhibition of the degeneration of ventricular tachycardia into ventricular fibrillation in db/db hearts. CONCLUSIONS/INTERPRETATION These findings strongly support the hypothesis that increased (Na(i)(+)) plays a causative role in the enhanced sensitivity to ischaemia observed in db/db diabetic hearts.
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Affiliation(s)
- R Anzawa
- UMR CNRS 8078, Université Paris-Sud XI, Hôpital Marie Lannelongue, 133 avenue de la Résistance, 92350 Le Plessis Robinson, France
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27
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Baetz D, Regula KM, Ens K, Shaw J, Kothari S, Yurkova N, Kirshenbaum LA. Nuclear factor-kappaB-mediated cell survival involves transcriptional silencing of the mitochondrial death gene BNIP3 in ventricular myocytes. Circulation 2006; 112:3777-85. [PMID: 16344406 DOI: 10.1161/circulationaha.105.573899] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.8] [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] [Indexed: 11/16/2022]
Abstract
BACKGROUND A survival role for the transcription factor nuclear factor-kappaB (NF-kappaB) in ventricular myocytes has been reported; however, the underlying mechanism is undefined. In this report we provide new mechanistic evidence that survival signals conferred by NF-kappaB impinge on the hypoxia-inducible death factor BNIP3. METHODS AND RESULTS Activation of the NF-kappaB signaling pathway by IKKbeta in ventricular myocytes suppressed mitochondrial permeability transition pore (PTP) opening and cell death provoked by BNIP3. Expression of IKKbeta or p65 NF-kappaB suppressed basal and hypoxia-inducible BNIP3 gene activity. Deletion analysis of the BNIP3 promoter revealed the NF-kappaB elements to be crucial for inhibiting basal and inducible BNIP3 gene activity. Cells derived from p65(-/-)-deficient mice or ventricular myocytes rendered defective for NF-kappaB signaling with a nonphosphorylative IkappaB exhibited increased basal BNIP3 gene expression, mitochondrial PTP, and cell death. Genetic or functional ablation of the BNIP3 gene in NF-kappaB-defective myocytes rescued them from mitochondrial defects and cell death. CONCLUSIONS The data provide new compelling evidence that NF-kappaB suppresses mitochondrial defects and cell death of ventricular myocytes through a mechanism that transcriptionally silences the death gene BNIP3. Collectively, our data provide new mechanistic insight into the mode by which NF-kappaB suppresses cell death and identify BNIP3 as a key transcriptional target for NF-kappaB-regulated expression in ventricular myocytes.
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Affiliation(s)
- Delphine Baetz
- Department of Physiology, Institute of Cardiovascular Sciences, St Boniface General Hospital Research Centre, Winnipeg, Manitoba, Canada
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28
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Affiliation(s)
- Delphine Baetz
- Institute of Cardiovascular Sciences, St. Boniface General Hospital Research Centre Rm. 3016, 351 Taché Avenue, Winnipeg, Manitoba, Canada, R2H 2A6
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29
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Abstract
Background—
Oxygen deprivation for prolonged periods of time provokes cardiac cell death and ventricular dysfunction. Preventing inappropriate cardiac cell death in patients with ischemic heart disease would be of significant therapeutic value as a means to improve ventricular performance. In the present study, we wished to ascertain whether activation of the cellular factor nuclear factor (NF)-κB suppresses mitochondrial defects and cell death of ventricular myocytes during hypoxic injury.
Methods and Results—
In contrast to normoxic control cells, ventricular myocytes subjected to hypoxia displayed a 9.1-fold increase (
P
<0.05) in cell death, as determined by Hoechst 33258 nuclear staining and vital dyes. Mitochondrial defects consistent with permeability transition pore opening, loss of mitochondrial membrane potential (ΔΨm), and Smac release were observed in cells subjected to hypoxia. An increase in postmitochondrial caspase 9 and caspase 3 activity was observed in hypoxic myocytes. Adenovirus-mediated delivery of wild-type IKKβ (IKKβwt) resulted in a significant increase in NF-κB-dependent DNA binding and gene transcription in ventricular myocytes. Interestingly, subcellular fractionation of myocytes revealed that the p65 subunit of NF-κB was localized to mitochondria. Hypoxia-induced mitochondrial defects and cell death were suppressed in cells expressing IKKβwt but not in cells expressing the kinase-defective IKKβ mutant.
Conclusions—
To the best of our knowledge, the data provide the first direct evidence that activation of the NF-κB signaling pathways is sufficient to suppress cell death of ventricular myocytes during hypoxia. Moreover, our data further suggest that NF-κB averts cell death through a mechanism that prevents perturbations to the mitochondrion during hypoxic injury.
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Affiliation(s)
- Kelly M Regula
- Institute of Cardiovascular Sciences, St Boniface General Hospital Research Centre, Department of Physiology, Faculty of Medicine University of Manitoba, Winnipeg, Manitoba, Canada
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30
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Regula KM, Rzeszutek MJ, Baetz D, Seneviratne C, Kirshenbaum LA. Therapeutic opportunities for cell cycle re-entry and cardiac regeneration. Cardiovasc Res 2004; 64:395-401. [PMID: 15537492 DOI: 10.1016/j.cardiores.2004.09.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [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: 06/17/2004] [Revised: 08/20/2004] [Accepted: 09/03/2004] [Indexed: 11/24/2022] Open
Abstract
Over the last two decades, considerable effort has been made to better understand putative regulators and molecular switches that govern the cell cycle in attempts to reactivate cell cycle progression of cardiac muscle. Rapid advancements on the field of stem cycle biology including evidence of cardiac progenitors within the adult myocardium itself and reports of cardiomyocyte DNA synthesis, which each suggest that the adult myocardium may in fact have the capacity for de novo myocyte regeneration. Augmenting cardiomyocyte number by targeting specific cell cycle regulatory genes or by stimulating cardiac progenitor cells to differentiate into cardiac muscle may be of therapeutic value in repopulating the adult myocardium with functionally active cells in patients with end-stage heart failure. Advancements in the area of cardiomyocyte cell cycle control and regeneration and their therapeutic potential are discussed.
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Affiliation(s)
- Kelly M Regula
- The Institute of Cardiovascular Sciences, St. Boniface General Hospital Research Centre, University of Manitoba, Rm. 3016, 351 Taché Avenue, Winnipeg, Manitoba R2H 2A6, Canada
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31
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Baetz D, Bernard M, Pinet C, Tamareille S, Chattou S, El Banani H, Coulombe A, Feuvray D. Different pathways for sodium entry in cardiac cells during ischemia and early reperfusion. Mol Cell Biochem 2003. [PMID: 12619873 DOI: 10.1023/a:1021197930694] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A number of data are consistent with the hypothesis that increases in intracellular Na+ concentration (Na+i) during ischemia and early reperfusion lead to calcium overload and exacerbation of myocardial injury. However, the mechanisms underlying the increased Na+i remain unclear. 23Na nuclear magnetic resonance spectroscopy was used to monitor Na+i in isolated rat hearts perfused with a high concentration of fatty acid as can occur under some pathological conditions. Whole-cell patch-clamp experiments were also performed on isolated cardiomyocytes in order to investigate the role of voltage-gated sodium channels. Na+i increased to substantially above control levels during no-flow ischemia. The results show that a pharmacological reduction of Na+i increase by cariporide (1 micromol/L, a Na+/H+ exchange blocker) is not the only protection against ischemia-reperfusion damage, but that such protection may also be brought about by metabolic action aimed at reducing fatty acid utilization by myocardial cells. This action was obtained in the presence of etomoxir (0.1 micromol/L), an inhibitor of carnitine palmitoyltransferase-1 (the key enzyme involved in fatty acid uptake by the mitochondria) which also decreases long-chain acyl carnitine accumulation. The possibility of Na+ channels participating in Na+i increase as a consequence of alterations in cardiac metabolism was studied in isolated cells. Sustained I(Na) was stimulated by the presence of lysophosphatidylcholine (LPC, 10 micromol/L) whose accumulation during ischemia is, at least partly, dependent on increased long-chain acyl carnitine. Current activation was particularly significant in the range of potentials between -60 and -20 mV. This may have particular relevance in ischemia. The quantity of charge carried by sustained I(Na) was reduced by 24% in the presence of 1 micromol/L cariporide. Therefore, limitation of long-chain fatty acid metabolism, and consequent limitation of ischemia-induced long-chain acyl carnitine accumulation, may contribute to reducing intracellular Na+ increase during ischemia-reperfusion.
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Affiliation(s)
- Delphine Baetz
- CNRS UMR 8078, Hôpital Marie Lannelongue, Université Paris-Sud XI, Orsay, France
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32
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Baetz D, Bernard M, Pinet C, Tamareille S, Chattou S, El Banani H, Coulombe A, Feuvray D. Different pathways for sodium entry in cardiac cells during ischemia and early reperfusion. Mol Cell Biochem 2003; 242:115-20. [PMID: 12619873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
A number of data are consistent with the hypothesis that increases in intracellular Na+ concentration (Na+i) during ischemia and early reperfusion lead to calcium overload and exacerbation of myocardial injury. However, the mechanisms underlying the increased Na+i remain unclear. 23Na nuclear magnetic resonance spectroscopy was used to monitor Na+i in isolated rat hearts perfused with a high concentration of fatty acid as can occur under some pathological conditions. Whole-cell patch-clamp experiments were also performed on isolated cardiomyocytes in order to investigate the role of voltage-gated sodium channels. Na+i increased to substantially above control levels during no-flow ischemia. The results show that a pharmacological reduction of Na+i increase by cariporide (1 micromol/L, a Na+/H+ exchange blocker) is not the only protection against ischemia-reperfusion damage, but that such protection may also be brought about by metabolic action aimed at reducing fatty acid utilization by myocardial cells. This action was obtained in the presence of etomoxir (0.1 micromol/L), an inhibitor of carnitine palmitoyltransferase-1 (the key enzyme involved in fatty acid uptake by the mitochondria) which also decreases long-chain acyl carnitine accumulation. The possibility of Na+ channels participating in Na+i increase as a consequence of alterations in cardiac metabolism was studied in isolated cells. Sustained I(Na) was stimulated by the presence of lysophosphatidylcholine (LPC, 10 micromol/L) whose accumulation during ischemia is, at least partly, dependent on increased long-chain acyl carnitine. Current activation was particularly significant in the range of potentials between -60 and -20 mV. This may have particular relevance in ischemia. The quantity of charge carried by sustained I(Na) was reduced by 24% in the presence of 1 micromol/L cariporide. Therefore, limitation of long-chain fatty acid metabolism, and consequent limitation of ischemia-induced long-chain acyl carnitine accumulation, may contribute to reducing intracellular Na+ increase during ischemia-reperfusion.
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Affiliation(s)
- Delphine Baetz
- CNRS UMR 8078, Hôpital Marie Lannelongue, Université Paris-Sud XI, Orsay, France
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Abstract
The sarcolemmal Na(+)-HCO cotransporter (NBC) is stimulated by intracellular acidification and acts as an acid extruder. We examined the role of the ERK pathway of the MAPK cascade as a potential mediator of NBC activation by intracellular acidification in the presence and absence of angiotensin II (ANG II) in adult rat ventricular myocytes. Intracellular pH (pH(i)) was recorded with the use of seminaphthorhodafluor-1. The NH method was used to induce an intracellular acid load. NBC activation was significantly decreased with the ERK inhibitors PD-98059 and U-0126. NBC activity after acidification was increased in the presence of ANG II (pH(i) range of 6.75-7.00). ANG II plus PD-123319 (AT(2) antagonist) still increased NBC activity, whereas ANG II plus losartan (AT(1) antagonist) did not affect it. ERK phosphorylation (measured by immunoblot analysis) during intracellular acidification was increased by ANG II, an effect that was abolished by losartan and U-0126. In conclusion, the MAPK(ERK)-dependent pathway facilitates the rate of pH(i) recovery from acid load through NBC activity and is involved in the AT(1) receptor-mediated stimulation of such activity by ANG II.
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Affiliation(s)
- Delphine Baetz
- Laboratoire de Physiologie Cellulaire and Centre National de la Recherche Scientifique, Hôpital Marie Lannelongue-Université Paris XI, 91405 Orsay Cedex, France
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34
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Baetz D, Feuvray D. The MAPK/ERK pathway mediates basal and AT, receptor activation of Na+-HCO3− cotransport in adult rat cardiomyocytes. J Mol Cell Cardiol 2002. [DOI: 10.1016/s0022-2828(02)90749-2] [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: 11/28/2022]
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Bernard M, Cabanes E, Baetz D, El Banani H, Lan C, Izquierdo M, Cozzone P, Feuvray D. Intracellular sodium in the ischemic and reperfused heart and its role in injury. MAGMA 2000; 11:5-6. [PMID: 11186986 DOI: 10.1007/bf02678480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- M Bernard
- Centre de Resonance Magnétique Biologique et Médicale (CRMBM), UMR CNRS 6612, Faculté de Médecine, Marseille, France.
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El Banani H, Bernard M, Baetz D, Cabanes E, Cozzone P, Lucien A, Feuvray D. Changes in intracellular sodium and pH during ischaemia-reperfusion are attenuated by trimetazidine. Comparison between low- and zero-flow ischaemia. Cardiovasc Res 2000; 47:688-96. [PMID: 10974217 DOI: 10.1016/s0008-6363(00)00136-x] [Citation(s) in RCA: 73] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE The aim of this study was to investigate whether trimetazidine (TMZ; 10(-6)M), which has been shown to inhibit fatty acid oxidation, reduces the ionic imbalance induced by ischaemia and reperfusion, especially through an attenuation in intracellular changes in H(+) and Na(+). METHODS Isovolumic rat hearts receiving 5.5 mM glucose and 1.2 mM palmitate as metabolic substrates were exposed to zero-flow ischaemia (TI) or low-flow ischaemia (LFI - coronary flow decreased by an average of 90%) (30 min at 37 degrees C) and then reperfused. 23Na nuclear magnetic resonance (NMR) spectroscopy was used to monitor intracellular Na(+) (Na(+)(i)) and 31P NMR spectroscopy was used to monitor intracellular pH (pH(i)). RESULTS During LFI the major effect of TMZ was a significant reduction in intracellular acidosis, whereas during TI the main effect of TMZ was a significant reduction in Na(+)(i) gain. In addition, the further gain in Na(+)(i) that occurred during the first minutes of reperfusion following TI, and to a far lesser extent following LFI, was suppressed in TMZ-treated hearts and also suppressed when hearts were perfused without fatty acid. In both LFI and TI, TMZ-induced attenuation of ionic imbalance was associated with a significantly improved recovery of ventricular function on reperfusion, as assessed by a lower increase in diastolic pressure and an increased recovery of developed pressure. CONCLUSION Our data provide evidence that specific myocardial metabolic modulation plays a significant role in reducing ionic imbalance during ischaemia and reperfusion.
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Affiliation(s)
- H El Banani
- Laboratoire de Physiologie Cellulaire, Université Paris XI, Orsay, France
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