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Pardo AC, Díaz Zegarra LA, González Arbeláez LF, Aiello EA, Mosca SM. Is N-methylacetazolamide a possible new therapy against ischemia-reperfusion injury? Front Pharmacol 2023; 14:1223132. [PMID: 37637427 PMCID: PMC10448815 DOI: 10.3389/fphar.2023.1223132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 07/24/2023] [Indexed: 08/29/2023] Open
Abstract
The increase of intracellular Ca2+ concentration, produced principally by its influx through the L-type Ca2+ channels, is one of the major contributors to the ischemia-reperfusion injury. The inhibition of those channels in different experimental models was effective to ameliorate the post-ischemic damage. However, at a clinical level, the results were contradictory. Recent results of our group obtained in an ¨ex vivo¨ heart model demonstrated that a chemical derived from acetazolamide, the N-methylacetazolamide (NMA) protected the heart against ischemia-reperfusion injury, diminishing the infarct size and improving the post-ischemic recovery of myocardial function and mitochondrial dynamic. A significant inhibitory action on L-type Ca2+ channels was also detected after NMA treatment, suggesting this action as responsible for the beneficial effects on myocardium exerted by this compound. Although these results were promising, the effectiveness of NMA in the treatment of ischemic heart disease in humans as well as the advantages or disadvantages in comparison to the classic calcium antagonists needs to be investigated.
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Affiliation(s)
- Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares “Dr Horacio E Cingolani”, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata. La Plata, Buenos Aires, Argentina
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Pardo AC, Mariangelo JIE, Arbeláez LFG, Fantinelli JC, Aiello EA, Mosca SM. Is soluble adenylyl cyclase (sAC) involved in ischemia-reperfusion injury? J Mol Cell Cardiol 2022. [DOI: 10.1016/j.yjmcc.2022.08.132] [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: 01/02/2023]
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Pardo AC, Zegarra LD, González Arbeláez LF, Ibáñez AM, Díaz RG, Aiello EA, Mosca SM. Cardioprotective effects of N-methylacetazolamide mediated by inhibition of L-type Ca2+ channel current. Biochim Biophys Acta Gen Subj 2022; 1866:130098. [DOI: 10.1016/j.bbagen.2022.130098] [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] [Received: 08/31/2021] [Revised: 01/20/2022] [Accepted: 01/22/2022] [Indexed: 11/25/2022]
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Ibañez AM, González Arbeláez LF, Ciocci Pardo A, Mosca S, Lofeudo JM, Velez Rueda JO, Aiello EA, De Giusti VC. Chronic GPER activation prevents ischemia/reperfusion injury in ovariectomized rats. Biochim Biophys Acta Gen Subj 2021; 1866:130060. [PMID: 34822923 DOI: 10.1016/j.bbagen.2021.130060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/26/2021] [Revised: 10/27/2021] [Accepted: 11/16/2021] [Indexed: 12/25/2022]
Abstract
During menopause women are exposed to an increase in cardiovascular risk. G protein-coupled estrogen receptor (GPER) is known to mediate several of the protective effects of such hormones. G1 was described as a selective and synthetic agonist for GPER. The aim of the present research is to evaluate the effect of a chronic treatment with G1 in ovariectomized (OVX) rats exposed to ischemia/reperfusion (I/R). Considering the hypothesis that an impaired mitochondrial state could be involved in the alterations produced in OVX rats, other objective of this study was to investigate it in an isolated preparation. Three months old rats were assigned to undergo either bilateral ovariectomy or sham operation. The OVX rats were randomly treated during one month with either G1 or vehicle. Cardiac mitochondria from OVX rats showed a depolarized membrane potential and a decreased calcium retention capacity in comparison with Sham rats, which were prevented by chronic G1 treatment. I/R caused a higher decrease of left ventricular developed pressure and a higher increase of left ventricular end diastolic pressure in OVX compared to Sham hearts. These altered mechanical parameters were prevented by G1. The induced infarct size was significantly higher in OVX, which was reduced by G1 treatment. These results indicate that the mitochondrial state in OVX rats is impaired, accompanied by an altered mechanical response after ischemia and reperfusion injury, which was effectively prevented with chronic treatment with G1. The present study may provide further insights for the potential development of a therapy based on the GPER modulation.
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Affiliation(s)
- Alejandro Martin Ibañez
- Centro de Investigaciones Cardiovasculares, Facultad de Ciencias Médicas, Universidad Nacional de La Plata-CONICET, La Plata, Argentina
| | - Luisa Fernanda González Arbeláez
- Centro de Investigaciones Cardiovasculares, Facultad de Ciencias Médicas, Universidad Nacional de La Plata-CONICET, La Plata, Argentina
| | - Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares, Facultad de Ciencias Médicas, Universidad Nacional de La Plata-CONICET, La Plata, Argentina
| | - Susana Mosca
- Centro de Investigaciones Cardiovasculares, Facultad de Ciencias Médicas, Universidad Nacional de La Plata-CONICET, La Plata, Argentina
| | - Juan Manuel Lofeudo
- Centro de Investigaciones Cardiovasculares, Facultad de Ciencias Médicas, Universidad Nacional de La Plata-CONICET, La Plata, Argentina
| | - Jorge Omar Velez Rueda
- Centro de Investigaciones Cardiovasculares, Facultad de Ciencias Médicas, Universidad Nacional de La Plata-CONICET, La Plata, Argentina
| | - Ernesto Alejandro Aiello
- Centro de Investigaciones Cardiovasculares, Facultad de Ciencias Médicas, Universidad Nacional de La Plata-CONICET, La Plata, Argentina.
| | - Verónica Celeste De Giusti
- Centro de Investigaciones Cardiovasculares, Facultad de Ciencias Médicas, Universidad Nacional de La Plata-CONICET, La Plata, Argentina.
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Ciocci Pardo A, González Arbeláez LF, Fantinelli JC, Álvarez BV, Mosca SM, Swenson ER. Myocardial and mitochondrial effects of the anhydrase carbonic inhibitor ethoxzolamide in ischemia-reperfusion. Physiol Rep 2021; 9:e15093. [PMID: 34806317 PMCID: PMC8606860 DOI: 10.14814/phy2.15093] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/21/2021] [Accepted: 09/21/2021] [Indexed: 11/24/2022] Open
Abstract
We have previously demonstrated that inhibition of extracellularly oriented carbonic anhydrase (CA) isoforms protects the myocardium against ischemia-reperfusion injury. In this study, our aim was to assess the possible further contribution of CA intracellular isoforms examining the actions of the highly diffusible cell membrane permeant inhibitor of CA, ethoxzolamide (ETZ). Isolated rat hearts, after 20 min of stabilization, were assigned to the following groups: (1) Nonischemic control: 90 min of perfusion; (2) Ischemic control: 30 min of global ischemia and 60 min of reperfusion (R); and (3) ETZ: ETZ at a concentration of 100 μM was administered for 10 min before the onset of ischemia and then during the first 10 min of reperfusion. In additional groups, ETZ was administered in the presence of SB202190 (SB, a p38MAPK inhibitor) or chelerythrine (Chel, a protein kinase C [PKC] inhibitor). Infarct size, myocardial function, and the expression of phosphorylated forms of p38MAPK, PKCε, HSP27, and Drp1, and calcineurin Aβ content were assessed. In isolated mitochondria, the Ca2+ response, Ca2+ retention capacity, and membrane potential were measured. ETZ decreased infarct size by 60%, improved postischemic recovery of myocardial contractile and diastolic relaxation increased P-p38MAPK, P-PKCε, P-HSP27, and P-Drp1 expression, decreased calcineurin content, and normalized calcium and membrane potential parameters measured in isolated mitochondria. These effects were significantly attenuated when ETZ was administered in the presence of SB or Chel. These data show that ETZ protects the myocardium and mitochondria against ischemia-reperfusion injury through p38MAPK- and PKCε-dependent pathways and reinforces the role of CA as a possible target in the management of acute cardiac ischemic diseases.
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Affiliation(s)
- Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E Cingolani¨CCT‐CONICETFacultad de Ciencias MédicasUniversidad Nacional de La PlataLa PlataBuenos AiresArgentina
| | - Luisa F. González Arbeláez
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E Cingolani¨CCT‐CONICETFacultad de Ciencias MédicasUniversidad Nacional de La PlataLa PlataBuenos AiresArgentina
| | - Juliana C. Fantinelli
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E Cingolani¨CCT‐CONICETFacultad de Ciencias MédicasUniversidad Nacional de La PlataLa PlataBuenos AiresArgentina
| | - Bernardo V. Álvarez
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E Cingolani¨CCT‐CONICETFacultad de Ciencias MédicasUniversidad Nacional de La PlataLa PlataBuenos AiresArgentina
- Present address:
Department of BiochemistryMembrane Protein Disease Research GroupUniversity of AlbertaEdmontonAlbertaT6G 2H7Canada
| | - Susana M. Mosca
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E Cingolani¨CCT‐CONICETFacultad de Ciencias MédicasUniversidad Nacional de La PlataLa PlataBuenos AiresArgentina
| | - Erik R. Swenson
- Department of Medicine, Pulmonary and Critical Care MedicineVA Puget Sound Health Care SystemUniversity of WashingtonSeattleWashingtonUSA
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Sepúlveda M, Burgos JI, Ciocci Pardo A, González Arbelaez L, Mosca S, Vila Petroff M. CaMKII-dependent ryanodine receptor phosphorylation mediates sepsis-induced cardiomyocyte apoptosis. J Cell Mol Med 2021; 24:9627-9637. [PMID: 33460250 PMCID: PMC7520277 DOI: 10.1111/jcmm.15470] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 05/01/2020] [Accepted: 05/12/2020] [Indexed: 11/27/2022] Open
Abstract
Sepsis is associated with cardiac dysfunction, which is at least in part due to cardiomyocyte apoptosis. However, the underlying mechanisms are far from being understood. Using the colon ascendens stent peritonitis mouse model of sepsis (CASP), we examined the subcellular mechanisms that mediate sepsis‐induced apoptosis. Wild‐type (WT) CASP mice hearts showed an increase in apoptosis respect to WT‐Sham. CASP transgenic mice expressing a CaMKII inhibitory peptide (AC3‐I) were protected against sepsis‐induced apoptosis. Dantrolene, used to reduce ryanodine receptor (RyR) diastolic sarcoplasmic reticulum (SR) Ca2+ release, prevented apoptosis in WT‐CASP. To examine whether CaMKII‐dependent RyR2 phosphorylation mediates diastolic Ca2+ release and apoptosis in sepsis, we evaluated apoptosis in mutant mice hearts that have the CaMKII phosphorylation site of RyR2 (Serine 2814) mutated to Alanine (S2814A). S2814A CASP mice did not show increased apoptosis. Consistent with RyR2 phosphorylation‐dependent enhancement in diastolic SR Ca2+ release leading to mitochondrial Ca2+ overload, mitochondrial Ca2+ retention capacity was reduced in mitochondria isolated from WT‐CASP compared to Sham and this reduction was absent in mitochondria from CASP S2814A or dantrolene‐treated mice. We conclude that in sepsis, CaMKII‐dependent RyR2 phosphorylation results in diastolic Ca2+ release from SR which leads to mitochondrial Ca2+ overload and apoptosis.
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Affiliation(s)
- Marisa Sepúlveda
- Centro de Investigaciones Cardiovasculares, Conicet La Plata, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Juan Ignacio Burgos
- Centro de Investigaciones Cardiovasculares, Conicet La Plata, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares, Conicet La Plata, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Luisa González Arbelaez
- Centro de Investigaciones Cardiovasculares, Conicet La Plata, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Susana Mosca
- Centro de Investigaciones Cardiovasculares, Conicet La Plata, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Martin Vila Petroff
- Centro de Investigaciones Cardiovasculares, Conicet La Plata, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
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Valverde CA, Mazzocchi G, Di Carlo MN, Ciocci Pardo A, Salas N, Ragone MI, Felice JI, Cely-Ortiz A, Consolini AE, Portiansky E, Mosca S, Kranias EG, Wehrens XHT, Mattiazzi A. Ablation of phospholamban rescues reperfusion arrhythmias but exacerbates myocardium infarction in hearts with Ca2+/calmodulin kinase II constitutive phosphorylation of ryanodine receptors. Cardiovasc Res 2020; 115:556-569. [PMID: 30169578 DOI: 10.1093/cvr/cvy213] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/03/2018] [Accepted: 08/27/2018] [Indexed: 12/12/2022] Open
Abstract
AIMS Abnormal Ca2+ release from the sarcoplasmic reticulum (SR), associated with Ca2+-calmodulin kinase II (CaMKII)-dependent phosphorylation of RyR2 at Ser2814, has consistently been linked to arrhythmogenesis and ischaemia/reperfusion (I/R)-induced cell death. In contrast, the role played by SR Ca2+ uptake under these stress conditions remains controversial. We tested the hypothesis that an increase in SR Ca2+ uptake is able to attenuate reperfusion arrhythmias and cardiac injury elicited by increased RyR2-Ser2814 phosphorylation. METHODS AND RESULTS We used WT mice, which have been previously shown to exhibit a transient increase in RyR2-Ser2814 phosphorylation at the onset of reperfusion; mice with constitutive pseudo-phosphorylation of RyR2 at Ser2814 (S2814D) to exacerbate CaMKII-dependent reperfusion arrhythmias and cardiac damage, and phospholamban (PLN)-deficient-S2814D knock-in (SDKO) mice resulting from crossbreeding S2814D with phospholamban knockout deficient (PLNKO) mice. At baseline, S2814D and SDKO mice had structurally normal hearts. Moreover none of the strains were arrhythmic before ischaemia. Upon cardiac I/R, WT, and S2814D hearts exhibited abundant arrhythmias that were prevented by PLN ablation. In contrast, PLN ablation increased infarct size compared with WT and S2814D hearts. Mechanistically, the enhanced SR Ca2+ sequestration evoked by PLN ablation in SDKO hearts prevented arrhythmogenic events upon reperfusion by fragmenting SR Ca2+ waves into non-propagated and non-arrhythmogenic events (mini-waves). Conversely, the increase in SR Ca2+ sequestration did not reduce but rather exacerbated I/R-induced SR Ca2+ leak, as well as mitochondrial alterations, which were greatly avoided by inhibition of RyR2. These results indicate that the increase in SR Ca2+ uptake is ineffective in preventing the enhanced SR Ca2+ leak of PLN ablated myocytes from either entering into nearby mitochondria and/or activating additional CaMKII pathways, contributing to cardiac damage. CONCLUSION Our results demonstrate that increasing SR Ca2+ uptake by PLN ablation can prevent the arrhythmic events triggered by CaMKII-dependent phosphorylation of RyR2-induced SR Ca2+ leak. These findings underscore the benefits of increasing SERCA2a activity in the face of SR Ca2+ triggered arrhythmias. However, enhanced SERCA2a cannot prevent but rather exacerbates I/R cardiac injury.
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Affiliation(s)
- Carlos A Valverde
- Centro de Investigaciones Cardiovasculares 'Dr. Horacio E. Cingolani', CCT-La Plata-CONICET, Facultad de Cs. Médicas, UNLP, 60 y 120 s/n, La Plata CP, Argentina
| | - Gabriela Mazzocchi
- Centro de Investigaciones Cardiovasculares 'Dr. Horacio E. Cingolani', CCT-La Plata-CONICET, Facultad de Cs. Médicas, UNLP, 60 y 120 s/n, La Plata CP, Argentina
| | - Mariano N Di Carlo
- Centro de Investigaciones Cardiovasculares 'Dr. Horacio E. Cingolani', CCT-La Plata-CONICET, Facultad de Cs. Médicas, UNLP, 60 y 120 s/n, La Plata CP, Argentina
| | - Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares 'Dr. Horacio E. Cingolani', CCT-La Plata-CONICET, Facultad de Cs. Médicas, UNLP, 60 y 120 s/n, La Plata CP, Argentina
| | - Nehuen Salas
- Centro de Investigaciones Cardiovasculares 'Dr. Horacio E. Cingolani', CCT-La Plata-CONICET, Facultad de Cs. Médicas, UNLP, 60 y 120 s/n, La Plata CP, Argentina
| | - María Ines Ragone
- Grupo de Farmacología Experimental, (GFEYEC), Departamento of Ciencias Biológicas, Facultad de Ciencias Exactas - CONICET., La Plata, Argentina
| | - Juan I Felice
- Centro de Investigaciones Cardiovasculares 'Dr. Horacio E. Cingolani', CCT-La Plata-CONICET, Facultad de Cs. Médicas, UNLP, 60 y 120 s/n, La Plata CP, Argentina
| | - Alejandra Cely-Ortiz
- Centro de Investigaciones Cardiovasculares 'Dr. Horacio E. Cingolani', CCT-La Plata-CONICET, Facultad de Cs. Médicas, UNLP, 60 y 120 s/n, La Plata CP, Argentina
| | - Alicia E Consolini
- Grupo de Farmacología Experimental, (GFEYEC), Departamento of Ciencias Biológicas, Facultad de Ciencias Exactas - CONICET., La Plata, Argentina
| | - Enrique Portiansky
- Laboratorio de Análisis de Imágenes, Facultad de Cs. Veterinarias, UNLP, La Plata, Argentina
| | - Susana Mosca
- Centro de Investigaciones Cardiovasculares 'Dr. Horacio E. Cingolani', CCT-La Plata-CONICET, Facultad de Cs. Médicas, UNLP, 60 y 120 s/n, La Plata CP, Argentina
| | - Evangelia G Kranias
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Xander H T Wehrens
- Department of Molecular Physiology and Biophysics, Cardiovascular Research Institute, Center for Space Medicine, Baylor College of Medicine, Houston, TX, USA.,Department of Medicine (in Cardiology), Cardiovascular Research Institute, Center for Space Medicine, Baylor College of Medicine, Houston, TX, USA.,Department of Pediatrics, Cardiovascular Research Institute, Center for Space Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Alicia Mattiazzi
- Centro de Investigaciones Cardiovasculares 'Dr. Horacio E. Cingolani', CCT-La Plata-CONICET, Facultad de Cs. Médicas, UNLP, 60 y 120 s/n, La Plata CP, Argentina
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González Arbeláez LF, Ciocci Pardo A, Fantinelli JC, Rojano B, Schinella GR, Mosca SM. Isoespintanol, a monoterpene isolated from oxandra cf xylopioides, ameliorates the myocardial ischemia-reperfusion injury by AKT/PKCε/eNOS-dependent pathways. Naunyn Schmiedebergs Arch Pharmacol 2019; 393:629-638. [PMID: 31776590 DOI: 10.1007/s00210-019-01761-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 11/01/2019] [Indexed: 01/21/2023]
Abstract
PURPOSE To determine the actions of isoespintanol (Isoesp) on post-ischemic myocardial and mitochondrial alterations. METHODS Hearts removed from Wistar rats were perfused by 20 min. After this period, the coronary flow was interrupted by half an hour and re-established during 1 h. In the treated group, Isoesp was administered at the beginning of reperfusion. To assess the participation of ε isoform of protein kinase C (PKCε), protein kinase B (PKB/Akt), and nitric oxide synthase (NOS), hearts were treated with Isoesp plus the respective inhibitors (chelerythrine, wortmannin, and N-nitro-L-arginine methyl ester). Cell death was determined by triphenyl tetrazolium chloride staining technique. Post-ischemic recovery of contractility, oxidative stress, and content of phosphorylated forms of PKCε, Akt, and eNOS were also examined. Mitochondrial state was assessed through the measurement of calcium-mediated response, calcium retention capacity, and mitochondrial potential. RESULTS Isoesp limited cell death, decreased post-ischemic dysfunction and oxidative stress, improved mitochondrial state, and increased the expression of PKCε, Akt, and eNOS phosphorylated. All these beneficial effects achieved by Isoesp were annulled by the inhibitors. CONCLUSION These findings suggest that activation of Akt/eNOS and PKCε signaling pathways are involved in the development of Isoesp-induced cardiac and mitochondria tolerance to ischemia-reperfusion.
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Affiliation(s)
- Luisa F González Arbeláez
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E. Cingolani¨, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, 60 y 120, 1900, La Plata, Argentina
| | - Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E. Cingolani¨, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, 60 y 120, 1900, La Plata, Argentina
| | - Juliana C Fantinelli
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E. Cingolani¨, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, 60 y 120, 1900, La Plata, Argentina
| | - Benjamín Rojano
- Laboratorio de Ciencias de los Alimentos, Facultad de Ciencias, Universidad Nacional de Colombia (sede Medellín), Bogotá, Colombia
| | - Guillermo R Schinella
- Facultad de Ciencias Médicas, Universidad Nacional de La Plata CIC-PBA, La Plata, Argentina
| | - Susana M Mosca
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E. Cingolani¨, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, 60 y 120, 1900, La Plata, Argentina.
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Ciocci Pardo A, González Arbeláez LF, Fantinelli JC, Aiello EA, Mosca SM. Calcineurin/P38MAPK/HSP27-dependent pathways are involved in the attenuation of postischemic mitochondrial injury afforded by sodium bicarbonate co-transporter (NBCe1) inhibition. Biochem Pharmacol 2019; 161:26-36. [PMID: 30615862 DOI: 10.1016/j.bcp.2019.01.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 11/01/2018] [Accepted: 01/02/2019] [Indexed: 12/14/2022]
Abstract
The electrogenic sodium bicarbonate co-transporter isoform 1 (NBCe1) plays an important role in ischemia-reperfusion injury. The cardioprotective action of an antibody directed to the extracellular loop 3 (a-L3) of NBCe1 was previously demonstrated by us. However, the role of a-L3 on mitochondrial post-ischemic alterations has not yet been determined. In this study, we aimed to elucidate the effects of a-L3 on post-ischemic mitochondrial state and dynamics analysing the involved mechanisms. Isolated rat hearts were assigned to the following groups: 1) Non-ischemic control (NIC): 110 min of perfusion; 2) Ischemic control (IC): 30 min of global ischemia and 60 min of reperfusion (R); 3) a-L3: a-L3 was administered during the initial 10 min of R; 4) SB + a-L3: SB202190 (p38MAPK inhibitor) plus a-L3. Infarct size (IS) was measured by TTC staining. Developed pressure (LVDP), maximal velocities of rise and decay of LVP (+dP/dt max, -dP/dt max) and end-diastolic pressure (LVEDP) of the left ventricle were used to assess systolic and diastolic function. Mitochondrial Ca2+ response (CaR), Ca2+ retention capacity (CRC), membrane potential (ΔΨm) and MnSOD levels were measured. The expression of P-p38MAPK, calcineurin, P-HSP27, P-Drp1, Drp1, and OPA1 were determined. a-L3 decreased IS, improved post-ischemic recovery of myocardial function, increased P-p38MAPK, P-HSP27, P-Drp1, cytosolic Drp1, and OPA1 expression and decreased calcineurin. These effects were abolished by p38MAPK inhibition with SB. These data show that NBCe1 inhibition by a-L3 limits the cell death, improves myocardial post-ischemic contractility and mitochondrial state and dynamic through calcium decrease/calcineurin inhibition-mediated p38MAPK activation and p38MAPK/HSP27-dependent pathways. Thus, we demonstrated that a-L3 is a potential therapeutic strategy in post-ischemic alterations.
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Affiliation(s)
- Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares Dr Horacio E Cingolani, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Luisa F González Arbeláez
- Centro de Investigaciones Cardiovasculares Dr Horacio E Cingolani, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Juliana C Fantinelli
- Centro de Investigaciones Cardiovasculares Dr Horacio E Cingolani, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Ernesto A Aiello
- Centro de Investigaciones Cardiovasculares Dr Horacio E Cingolani, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Susana M Mosca
- Centro de Investigaciones Cardiovasculares Dr Horacio E Cingolani, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina.
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González Arbeláez LF, Ciocci Pardo A, Swenson ER, Álvarez BV, Mosca SM, Fantinelli JC. Cardioprotection of benzolamide in a regional ischemia model: Role of eNOS/NO. Exp Mol Pathol 2018; 105:345-351. [PMID: 30308197 DOI: 10.1016/j.yexmp.2018.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/22/2018] [Accepted: 10/04/2018] [Indexed: 11/29/2022]
Abstract
BACKGROUND Recent studies from our laboratory show the cardioprotective action of benzolamide (BZ, carbonic anhydrase inhibitor) against ischemia-reperfusion injury. However, the mechanisms involved have not been fully elucidated. OBJECTIVE To examine the participation of the endothelial nitric oxide synthase (eNOS)/nitric oxide (NO) in the effects of BZ in a model of regional ischemia. METHODS Isolated rat hearts perfused by Langendorff technique were submitted to 40 min of coronary artery occlusion followed by 60 min of reperfusion (IC). Other hearts received BZ during the first 10 min of reperfusion in absence or presence of L-NAME, NOS inhibitor. The infarct size (IS) and the post-ischemic recovery of myocardial function were measured. Oxidative/nitrosative damage were assessed by reduced glutathione (GSH) content, thiobarbituric acid reactive substances (TBARS) and 3-nitrotyrosine levels. The expression of phosphorylated forms of Akt, p38MAPK and eNOS, and the concentration of inducible nitric oxide synthase (iNOS) were also determined. RESULTS BZ significantly decreased IS (6.2 ± 0.5% vs. 34 ± 4%), improved post-ischemic contractility, preserved GSH levels and diminished TBARS and 3-nitrotyrosine. In IC hearts, P-Akt, P-p38MAPK and P-eNOS decreased and iNOS increased. After BZ addition the levels of P-kinases and P-eNOS increased and iNOS decreased. Except for P-Akt, P-p38MAPK and iNOS, the effects of BZ were abolished by L-NAME. CONCLUSIONS Our data demonstrate that the treatment with BZ at the onset of reperfusion was effective to reduce cell death, contractile dysfunction and oxidative/nitrosative damage produced by coronary artery occlusion. These BZ-mediated beneficial actions appear mediated by eNOS/NO-dependent pathways.
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Affiliation(s)
| | | | - Erik R Swenson
- Department of Medicine, Pulmonary and Critical Care Medicine, VA Puget Sound Health Care System, University of Washington, Seatle, WA 98108, USA
| | - Bernardo V Álvarez
- "Dr Horacio E. Cingolani", Universidad Nacional de La Plata, La Plata, Argentina
| | - Susana M Mosca
- "Dr Horacio E. Cingolani", Universidad Nacional de La Plata, La Plata, Argentina
| | - Juliana C Fantinelli
- "Dr Horacio E. Cingolani", Universidad Nacional de La Plata, La Plata, Argentina.
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González Arbeláez LF, Ciocci Pardo A, Fantinelli JC, Schinella GR, Mosca SM, Ríos JL. Cardioprotection and natural polyphenols: an update of clinical and experimental studies. Food Funct 2018; 9:6129-6145. [DOI: 10.1039/c8fo01307a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Mechanisms involved in ischemia–reperfusion injury.
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Affiliation(s)
- Luisa F. González Arbeláez
- Centro de Investigaciones Cardiovasculares
- CCT-CONICET
- Universidad Nacional de la Plata
- 1900 La Plata
- Argentina
| | - Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares
- CCT-CONICET
- Universidad Nacional de la Plata
- 1900 La Plata
- Argentina
| | - Juliana C. Fantinelli
- Centro de Investigaciones Cardiovasculares
- CCT-CONICET
- Universidad Nacional de la Plata
- 1900 La Plata
- Argentina
| | - Guillermo R. Schinella
- Cátedra de Farmacología Básica
- Facultad de Ciencias Médicas
- Universidad Nacional de La Plata
- 1900 La Plata
- Argentina
| | - Susana M. Mosca
- Centro de Investigaciones Cardiovasculares
- CCT-CONICET
- Universidad Nacional de la Plata
- 1900 La Plata
- Argentina
| | - José-Luis Ríos
- Departament de Farmacologia
- Facultat de Farmàcia
- Universitat de València
- 46100 Burjassot
- Spain
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Ciocci Pardo A, Scuri S, González Arbeláez LF, Caldiz C, Fantinelli J, Mosca SM. Survival kinase-dependent pathways contribute to gender difference in the response to myocardial ischemia-reperfusion and ischemic post-conditioning. Cardiovasc Pathol 2017; 33:19-26. [PMID: 29414428 DOI: 10.1016/j.carpath.2017.12.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 11/07/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 01/02/2023] Open
Abstract
The response to ischemia/reperfusion and the effects of ischemic post-conditioning (IPC) are sex-dependent, but the mechanisms have not been clarified. Male (M) and female (F) rat hearts isolated and perfused using the Langendorff technique were subject to 30 min of global ischemia (GI) and 60 min reperfusion (R). In IPC hearts, three cycles of 30-sec GI/30-sec R were applied at the beginning of R. Infarct size and myocardial function were assessed. Superoxide production, antioxidant systems, and expressions of phosphorylated forms of serine/threonine kinase (Akt), glycogen synthase kinase 3β (GSK-3β), protein kinase C ε (PKCε), endothelial nitric oxide synthase (eNOS), and apoptosis were measured. In the basal state, superoxide production and apoptosis were lower, and antioxidant systems and phospho-kinase expressions were higher in F rather than in M hearts. After ischemia-reperfusion, infarct size was less in F hearts, and post-ischemic recovery of myocardial function was higher in F rather than in M hearts. Superoxide production, phospho-kinase activity, phospho-eNOS, and apoptosis increased in both sexes while antioxidants decreased in both sexes. After IPC, infarct size, superoxide production, and apoptosis decreased and phospho-eNOS increased in F and M hearts but phospho-kinase expressions and post-ischemic recovery of myocardial function improved only in M hearts. These results show that Akt/GSK-3β/PKCε/eNOS-dependent pathways-mediated superoxide production and apoptosis appear as important factors involved in the observed gender differences.
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Affiliation(s)
- Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E. Cingolani¨, CCT-CONICET, Universidad Nacional de La Plata, La Plata, Argentina
| | - Sergio Scuri
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E. Cingolani¨, CCT-CONICET, Universidad Nacional de La Plata, La Plata, Argentina
| | - Luisa F González Arbeláez
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E. Cingolani¨, CCT-CONICET, Universidad Nacional de La Plata, La Plata, Argentina
| | - Claudia Caldiz
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E. Cingolani¨, CCT-CONICET, Universidad Nacional de La Plata, La Plata, Argentina
| | - Juliana Fantinelli
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E. Cingolani¨, CCT-CONICET, Universidad Nacional de La Plata, La Plata, Argentina
| | - Susana M Mosca
- Centro de Investigaciones Cardiovasculares ¨Dr Horacio E. Cingolani¨, CCT-CONICET, Universidad Nacional de La Plata, La Plata, Argentina.
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Ciocci Pardo A, Díaz RG, González Arbeláez LF, Pérez NG, Swenson ER, Mosca SM, Alvarez BV. Benzolamide perpetuates acidic conditions during reperfusion and reduces myocardial ischemia-reperfusion injury. J Appl Physiol (1985) 2017; 125:340-352. [PMID: 29357509 DOI: 10.1152/japplphysiol.00957.2017] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
During ischemia, increased anaerobic glycolysis results in intracellular acidosis. Activation of alkalinizing transport mechanisms associated with carbonic anhydrases (CAs) leads to myocardial intracellular Ca2+ increase. We characterize the effects of inhibition of CA with benzolamide (BZ) during cardiac ischemia-reperfusion (I/R). Langendorff-perfused isolated rat hearts were subjected to 30 min of global ischemia and 60 min of reperfusion. Other hearts were treated with BZ (5 μM) during the initial 10 min of reperfusion or perfused with acid solution (AR, pH 6.4) during the first 3 min of reperfusion. p38MAPK, a kinase linked to membrane transporters and involved in cardioprotection, was examined in hearts treated with BZ in presence of the p38MAPK inhibitor SB202190 (10 μM). Infarct size (IZ) and myocardial function were assessed, and phosphorylated forms of p38MAPK, Akt, and PKCε were evaluated by immunoblotting. We determined the rate of intracellular pH (pHi) normalization after transient acid loading in the absence and presence of BZ or BZ + SB202190 in heart papillary muscles (HPMs). Mitochondrial membrane potential (ΔΨm), Ca2+ retention capacity and Ca2+-mediated swelling after I/R were also measured. BZ, similarly to AR, reduced IZ, improved postischemic recovery of myocardial contractility, increased phosphorylation of Akt, PKCε, and p38MAPK, and normalized ΔΨm and Ca2+ homeostasis, effects abolished after p38MAPK inhibition. In HPMs, BZ slowed pHi recovery, an effect that was restored after p38MAPK inhibition. We conclude that prolongation of acidic conditions during reperfusion by BZ could be responsible for the cardioprotective benefits of reduced infarction and better myocontractile function, through p38MAPK-dependent pathways. NEW & NOTEWORTHY Carbonic anhydrase inhibition by benzolamide (BZ) maintains acidity, decreases infarct size, and improves postischemic myocardial dysfunction in ischemia-reperfusion (I/R) hearts. Protection afforded by BZ mimicked the beneficial effects elicited by an acidic solution (AR). Increased phosphorylation of p38MAPK occurs in I/R hearts reperfused with BZ or with AR. Mitochondria from I/R hearts possess abnormal Ca2+ handling and a more depolarized membrane potential compared with control hearts, and these changes were restored by treatment with BZ or AR.
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Affiliation(s)
- Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares CIC-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata , La Plata , Argentina
| | - Romina G Díaz
- Centro de Investigaciones Cardiovasculares CIC-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata , La Plata , Argentina
| | - Luisa F González Arbeláez
- Centro de Investigaciones Cardiovasculares CIC-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata , La Plata , Argentina
| | - Néstor G Pérez
- Centro de Investigaciones Cardiovasculares CIC-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata , La Plata , Argentina
| | - Erik R Swenson
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington, Department of Veterans Affairs Puget Sound Health Care System , Seattle, Washington
| | - Susana M Mosca
- Centro de Investigaciones Cardiovasculares CIC-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata , La Plata , Argentina
| | - Bernardo V Alvarez
- Centro de Investigaciones Cardiovasculares CIC-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata , La Plata , Argentina
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Fantinelli JC, Cuéllar Álvarez LN, González Arbeláez LF, Ciocci Pardo A, Galeano García PL, Schinella GR, Mosca SM. Acute treatment with copoazú fermented extract ameliorates myocardial ischemia-reperfusion injury via eNOS activation. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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15
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González Arbeláez LF, Fantinelli JC, Ciocci Pardo A, Caldiz CI, Ríos JL, Schinella GR, Mosca SM. Effect of an Ilex paraguariensis (yerba mate) extract on infarct size in isolated rat hearts: the mechanisms involved. Food Funct 2016; 7:816-24. [PMID: 26661577 DOI: 10.1039/c5fo01255d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Tea made from Ilex paraguariensis (IP) dried and minced leaves is a beverage widely consumed by large populations in South America as a source of caffeine (stimulant action) and for its medicinal properties. However, there is little information about the action of IP on the myocardium in the ischemia-reperfusion condition. Therefore, the objective of this study was to examine the effects of an aqueous extract of IP on infarct size in a model of regional ischemia. Isolated rat hearts were perfused by the Langendorff technique and subjected to 40 min of coronary artery occlusion followed by 60 min of reperfusion (ischemic control hearts). Other hearts received IP 30 μg mL(-1) during the first 10 min of reperfusion in the absence or presence of l(G)-nitro-l-arginine methyl ester [l-NAME, a nitric oxide synthase (NOS) inhibitor]. The infarct size was determined by triphenyltetrazolium chloride (TTC) staining. Post-ischemic myocardial function and coronary perfusion were also assessed. Cardiac oxidative damage was evaluated by using the thiobarbituric acid reactive substance (TBARS) concentration and the reduced glutathione (GSH) content. To analyze the mechanisms involved, the expressions of phosphorylated forms of eNOS and Akt were measured. In isolated mitochondria the Ca(2+)-induced mitochondrial permeability transition pore (mPTP) opening was determined. IP significantly decreased the infarct size and improved post-ischemic myocardial function and coronary perfusion. TBARS decreased, GSH was partially preserved, the levels of P-eNOS and P-Akt increased and mPTP opening diminished after IP addition. These changes were abolished by l-NAME. Therefore, our data demonstrate that acute treatment with IP only during reperfusion was effective in reducing myocardial post-ischemic alterations. These actions would be mediated by a decrease of mitochondrial permeability through IP-activated Akt/eNOS-dependent pathways.
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Affiliation(s)
- Luisa F González Arbeláez
- Centro de Investigaciones Cardiovasculares, Universidad Nacional de La Plata-CONICET, La Plata, Argentina.
| | - Juliana C Fantinelli
- Centro de Investigaciones Cardiovasculares, Universidad Nacional de La Plata-CONICET, La Plata, Argentina.
| | - Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares, Universidad Nacional de La Plata-CONICET, La Plata, Argentina.
| | - Claudia I Caldiz
- Centro de Investigaciones Cardiovasculares, Universidad Nacional de La Plata-CONICET, La Plata, Argentina.
| | - José Luis Ríos
- Departament de Farmacologia, Facultat de Farmàcia, Universitat de València, Spain
| | - Guillermo R Schinella
- Cátedra de Farmacología Básica, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, CIC, Provincia de Buenos Aires, La Plata, Argentina
| | - Susana M Mosca
- Centro de Investigaciones Cardiovasculares, Universidad Nacional de La Plata-CONICET, La Plata, Argentina.
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16
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González Arbeláez LF, Ciocci Pardo A, Fantinelli JC, Caldiz C, Ríos JL, Schinella GR, Mosca SM. Ex Vivo Treatment with a Polyphenol-Enriched Cocoa Extract Ameliorates Myocardial Infarct and Postischemic Mitochondrial Injury in Normotensive and Hypertensive Rats. J Agric Food Chem 2016; 64:5180-5187. [PMID: 27281548 DOI: 10.1021/acs.jafc.6b01669] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Our objective was to determine the effects of a polyphenol-enriched cocoa extract (PCE) on myocardial postischemic alterations in normotensive (Wistar rats, W) and spontaneously hypertensive rats (SHR). Isolated hearts were submitted to 110 min of perfusion or 20 min stabilization, 30 min global ischemia, and 60 min reperfusion (R). Other hearts were treated with PCE at the onset of R. Infarct size, the reduced glutathione (GSH), and the expression of phospho-Akt, P-GSK-3β, and P-eNOS were assessed. In isolated mitochondria, the Ca(2+)-mediated response of mitochondrial permeability transition pore (mPTP), membrane potential (Δψm), and superoxide production were determined. PCE decreased infarct size, partly preserved GSH, increased the P-Akt, P-GSK-3β, and P-eNOS contents, improved mPTP response to Ca(2+), decreased the superoxide production, and restored Δψm. These data show that PCE decreases the cardiac postischemic damage in W rats and SHR and suggest that Akt/GSK-3β/eNOS dependent pathways are involved.
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Affiliation(s)
- Luisa F González Arbeláez
- Centro de Investigaciones Cardiovasculares CCT-CONICET, Universidad Nacional de La Plata , 60 y 120, 1900 La Plata, Argentina
| | - Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares CCT-CONICET, Universidad Nacional de La Plata , 60 y 120, 1900 La Plata, Argentina
| | - Juliana C Fantinelli
- Centro de Investigaciones Cardiovasculares CCT-CONICET, Universidad Nacional de La Plata , 60 y 120, 1900 La Plata, Argentina
| | - Claudia Caldiz
- Centro de Investigaciones Cardiovasculares CCT-CONICET, Universidad Nacional de La Plata , 60 y 120, 1900 La Plata, Argentina
| | - José Luis Ríos
- Departament de Farmacologia, Facultat de Farmàcia, Universitat de València , 46010 València, Spain
| | - Guillermo R Schinella
- Facultad de Ciencias Médicas, Universidad Nacional de La Plata, CIC , 1900 La Plata, Provincia de Buenos Aires, Argentina
| | - Susana M Mosca
- Centro de Investigaciones Cardiovasculares CCT-CONICET, Universidad Nacional de La Plata , 60 y 120, 1900 La Plata, Argentina
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Ciocci Pardo A, Rinaldi GJ, Mosca SM. Data supporting the cardiac mitochondria calcium handling in female normotensive and spontaneously hypertensive rats. Data Brief 2016; 7:406-10. [PMID: 26977446 PMCID: PMC4782001 DOI: 10.1016/j.dib.2016.02.056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 02/04/2016] [Accepted: 02/20/2016] [Indexed: 11/01/2022] Open
Abstract
In association with the published article "Mitochondrial calcium handling in normotensive and spontaneously hypertensive rats: correlation with systolic blood pressure levels" [1], this data article contains information about calcium handling of cardiac mitochondria isolated from female of both rats strains (WKY and SHR). Dataset of mitochondrial permeability transition pore (mPTP) resistance to opening Ca(2+)-mediated, Ca(2+) retention capacity (CRC), time constants and mitochondrial membrane potential (ΔΨm) are showed.
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Affiliation(s)
- Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares "Dr. Horacio E. Cingolani", CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Argentina
| | - Gustavo J Rinaldi
- Centro de Investigaciones Cardiovasculares "Dr. Horacio E. Cingolani", CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Argentina
| | - Susana M Mosca
- Centro de Investigaciones Cardiovasculares "Dr. Horacio E. Cingolani", CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Argentina
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González Arbeláez LF, Ciocci Pardo A, Fantinelli JC, Mosca SM. Cyclosporine-A mimicked the ischemic pre- and postconditioning-mediated cardioprotection in hypertensive rats: Role of PKCε. Exp Mol Pathol 2016; 100:266-75. [PMID: 26844384 DOI: 10.1016/j.yexmp.2016.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 01/07/2016] [Accepted: 01/29/2016] [Indexed: 12/11/2022]
Abstract
Our aim was to assess the action of cyclosporine-A (CsA) against reperfusion injury in spontaneously hypertensive rats (SHR) compared to the effects of ischemic pre- (IP) and postconditioning (IPC), examining the role played by PKCε. Isolated hearts were submitted to the following protocols: IC: 45 min global ischemia (GI) and 1h reperfusion (R); IP: a cycle of 5 min GI and 10 min of R prior to 45 min-GI; and IPC: three cycles of 30s-GI/30s-R at the start of R. Other hearts of the IC, IP and IPC groups received CsA (mitochondrial permeability transition pore inhibitor) or chelerythrine (Che, non-selective PKC inhibitor). Infarct size (IS) was assessed. TBARS and reduced glutathione (GSH) content - as parameters of oxidative damage, the expression of P-Akt, P-GSK-3β, P-PKCε and cytochrome c (Cyc) release - as an index of mitochondrial permeability and the response of isolated mitochondria to Ca(2+) were also measured. IS similarly decreased in preconditioned, postconditioned and CsA treated heart showing the highest values in the combinations IP+CsA and IPC+CsA. TBARS decreased and GSH was partially preserved after all interventions. The content of P-Akt, P-GSK-3β and P-PKCε increased in cytosol and decreased in mitochondria after IP and IPC. In CsA treated hearts these enzymes increased in both fractions reaching the highest values. Cyc release was attenuated and the response of mitochondria to Ca(2+) was improved by the interventions. The beneficial effects of IP and IPC were annulled when PKC was inhibited with Che. A PKCε/VDAC association was also detected. These data show that, in SHR, the CsA treatment mimicked and reinforced the cardioprotective action afforded by IP and IPC in which PKCε-mediated attenuation of mitochondrial permeability appears as the main mechanism involved.
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Pardo AC, Rinaldi GJ, Mosca SM. Mitochondrial calcium handling in normotensive and spontaneously hypertensive rats: correlation with systolic blood pressure levels. Mitochondrion 2014; 20:75-81. [PMID: 25530492 DOI: 10.1016/j.mito.2014.12.003] [Citation(s) in RCA: 10] [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: 10/14/2014] [Revised: 12/04/2014] [Accepted: 12/11/2014] [Indexed: 01/10/2023]
Abstract
The aim was to study the mitochondrial Ca(2+) handling of mitochondria isolated from normotensive Wistar Kyoto (WKY) and spontaneously hypertensive rats (SHR) hearts and to establish a possible correlation with systolic blood pressure (SBP). Mitochondrial swelling after Ca(2+) addition, Ca(2+)-retention capacity (CRC) by calcium green method, and membrane potential (ΔΨm) were assessed. SBP was 124±1 (WKY) and 235±6mmHg (SHR). CRC, Ca(2+) response and ΔΨm were lower in SHR than WKY mitochondria. The conclusion is: the more depolarized state of SHR than WKY mitochondria results in an abnormal Ca(2+) handling and this event is closely associated with the SBP.
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Affiliation(s)
- Alejandro Ciocci Pardo
- Centro de Investigaciones Cardiovasculares, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Gustavo J Rinaldi
- Centro de Investigaciones Cardiovasculares, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Susana M Mosca
- Centro de Investigaciones Cardiovasculares, CCT-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina.
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