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Li T, Li Y, Zeng Y, Zhou X, Zhang S, Ren Y. Construction of preclinical evidence for propofol in the treatment of reperfusion injury after acute myocardial infarction: A systematic review and meta-analysis. Biomed Pharmacother 2024; 174:116629. [PMID: 38640712 DOI: 10.1016/j.biopha.2024.116629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/04/2024] [Accepted: 04/17/2024] [Indexed: 04/21/2024] Open
Abstract
Propofol, a commonly used intravenous anesthetic, has demonstrated potential in protecting against myocardial ischemia/reperfusion injury (MIRI) based on preclinical animal studies. However, the clinical benefits of propofol in this context are subject to debate. We conducted a systematic search across eight databases to identify all relevant animal studies investigating the preventive effects of propofol on MIRI until October 30, 2023. We assessed the methodological quality of the included studies using SYRCLE's bias risk tool. Statistical analysis was performed using STATA 15.1. The primary outcome measures analyzed in this study were myocardial infarct size (IS) and myocardial injury biomarkers. This study presents a comprehensive analysis of 48 relevant animal studies investigating propofol's preventive effects on MIRI. Propofol administration demonstrated a reduction in myocardial IS and decreased levels of myocardial injury biomarkers (CK-MB, LDH, cTnI). Moreover, propofol improved myocardial function parameters (+dp/dtmax, -dP/dtmax, LVEF, LVFS), exhibited favorable effects on inflammatory markers (IL-6, TNF-α) and oxidative stress markers (SOD, MDA), and reduced myocardial cell apoptotic index (AI). These findings suggest propofol exerts cardioprotective effects by reducing myocardial injury, decreasing infarct size, and improving heart function. However, the absence of animal models that accurately represent comorbidities such as aging and hypertension, as well as inconsistent administration methods that align with clinical practice, may hinder its clinical translation. Further robust investigations are required to validate these findings, elucidate the underlying mechanisms of propofol, and facilitate its potential translation into clinical practice.
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Affiliation(s)
- Tao Li
- School of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yanwei Li
- Cardiology Department, Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yiwei Zeng
- School of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xin Zhou
- School of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Su Zhang
- School of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yulan Ren
- School of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China; School of Chinese Classics, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
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Li X, Lu K, Guo S, Xue S, Lian F. TRPV4 blockade alleviates endoplasmic reticulum stress mediated apoptosis in hypoxia-induced cardiomyocyte injury. Cell Signal 2024; 114:110973. [PMID: 37981067 DOI: 10.1016/j.cellsig.2023.110973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 10/23/2023] [Accepted: 11/13/2023] [Indexed: 11/21/2023]
Abstract
BACKGROUND Hypoxia-induced myocardial injury remains to be a huge health issue worldwide. Transient receptor potential vanilloid 4 (TRPV4) is a high-flux Ca2+ channel that is involved in numerous cardiovascular diseases. However, the role of TRPV4 in myocardial hypoxic injury remains unclear. Accordingly, this study aimed to investigate the antiapoptotic activity of TRPV4 inhibition and elucidate the underlying mechanisms in myocardial hypoxic injury. METHODS The ability of TRPV4 to modulate the endoplasmic reticulum stress (ERS) and apoptosis was assessed in vitro through the administration of the TRPV4 antagonist HC-067047 or the agonist GSK1016790A. Additionally, intracellular Ca2+ concentration was measured by Fluo-4 AM. RESULTS TRPV4 expression was significantly upregulated in hypoxic H9c2 cells compared with that in normoxic cardiomyocytes, accompanied with increased intracellular Ca2+ levels. Conversely, TRPV4 inhibition alleviated ERS in hypoxic H9c2 cells and prevented apoptosis, whereas TRPV4 agonist exacerbated such events. Furthermore, H9c2 cell apoptosis was attenuated with the administration of 4-PBA, an ERS inhibitor. CONCLUSION TRPV4 inhibition alleviates hypoxia-induced H9c2 cell apoptosis by mitigating ERS.
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Affiliation(s)
- Xueqing Li
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China
| | - Kongli Lu
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China
| | - Suxiang Guo
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China
| | - Song Xue
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China.
| | - Feng Lian
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China.
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Wang YC, Shao YD, Shao CL, Guan XQ, Lu PP, Ning K, Liu BN, Guo HD. Dihydrotanshinone I reduces H9c2 cell damage by regulating AKT and MAPK signaling pathways. In Vitro Cell Dev Biol Anim 2024; 60:89-97. [PMID: 38253954 DOI: 10.1007/s11626-023-00839-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 11/30/2023] [Indexed: 01/24/2024]
Abstract
Cardiovascular disease is the deadliest disease in the world. Previous studies have shown that Dihydrotanshinone I (DHT) can improve cardiac function after myocardial injury. This study aimed to observe the protective effect and mechanism of DHT on H9c2 cells by establishing an oxygen-glucose deprivation/reoxygenation (OGD/R) injury model. By constructing OGD/R injury simulation of H9c2 cells in a myocardial injury model, the proliferation of H9c2 cells treated with DHT concentrations of 0.1 μmol/L were not affected at 24, 48, and 72 h. DHT can significantly reduce the apoptosis of H9c2 cells caused by OGD/R. Compared with the OGD/R group, DHT treatment significantly reduced the level of MDA and increased the level of SOD in cells. DHT treatment of cells can significantly reduce the levels of ROS and Superoxide in mitochondria in H9c2 cells caused by OGD/R and H2O2. DHT significantly reduced the phosphorylation levels of P38MAPK and ERK in H9c2 cells induced by OGD/R, and significantly increased the phosphorylation levels of AKT in H9c2 cells. DHT can significantly reduce the oxidative stress damage of H9c2 cells caused by H2O2 and OGD/R, thereby reducing the apoptosis of H9c2 cells. And this may be related to regulating the phosphorylation levels of AKT, ERK, and P38MAPK.
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Affiliation(s)
- Ya-Chao Wang
- School of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Academy of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yi-da Shao
- School of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Academy of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Chang-le Shao
- School of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Academy of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiao-Qi Guan
- School of Traditional Chinese Medicine & School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ping-Ping Lu
- School of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ke Ning
- School of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Bao-Nian Liu
- School of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Hai-Dong Guo
- School of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
- Academy of Integrated Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
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Ndrepepa G, Kastrati A. Coronary No-Reflow after Primary Percutaneous Coronary Intervention-Current Knowledge on Pathophysiology, Diagnosis, Clinical Impact and Therapy. J Clin Med 2023; 12:5592. [PMID: 37685660 PMCID: PMC10488607 DOI: 10.3390/jcm12175592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/17/2023] [Accepted: 08/26/2023] [Indexed: 09/10/2023] Open
Abstract
Coronary no-reflow (CNR) is a frequent phenomenon that develops in patients with ST-segment elevation myocardial infarction (STEMI) following reperfusion therapy. CNR is highly dynamic, develops gradually (over hours) and persists for days to weeks after reperfusion. Microvascular obstruction (MVO) developing as a consequence of myocardial ischemia, distal embolization and reperfusion-related injury is the main pathophysiological mechanism of CNR. The frequency of CNR or MVO after primary PCI differs widely depending on the sensitivity of the tools used for diagnosis and timing of examination. Coronary angiography is readily available and most convenient to diagnose CNR but it is highly conservative and underestimates the true frequency of CNR. Cardiac magnetic resonance (CMR) imaging is the most sensitive method to diagnose MVO and CNR that provides information on the presence, localization and extent of MVO. CMR imaging detects intramyocardial hemorrhage and accurately estimates the infarct size. MVO and CNR markedly negate the benefits of reperfusion therapy and contribute to poor clinical outcomes including adverse remodeling of left ventricle, worsening or new congestive heart failure and reduced survival. Despite extensive research and the use of therapies that target almost all known pathophysiological mechanisms of CNR, no therapy has been found that prevents or reverses CNR and provides consistent clinical benefit in patients with STEMI undergoing reperfusion. Currently, the prevention or alleviation of MVO and CNR remain unmet goals in the therapy of STEMI that continue to be under intense research.
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Affiliation(s)
- Gjin Ndrepepa
- Deutsches Herzzentrum München, Technische Universität München, Lazarettstrasse 36, 80636 Munich, Germany;
| | - Adnan Kastrati
- Deutsches Herzzentrum München, Technische Universität München, Lazarettstrasse 36, 80636 Munich, Germany;
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 80336 Munich, Germany
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Fischer M, Zacherl MJ, Olivier J, Lindner S, Massberg S, Bartenstein P, Grawe F, Ziegler S, Brendel M, Lehner S, Boening G, Todica A. Detection of apoptosis by [ 18F]ML-10 after cardiac ischemia-reperfusion injury in mice. Ann Nucl Med 2023; 37:34-43. [PMID: 36306025 PMCID: PMC9813199 DOI: 10.1007/s12149-022-01801-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/20/2022] [Indexed: 01/09/2023]
Abstract
OBJECTIVE Myocardial infarction leads to ischemic heart disease and cell death, which is still a major obstacle in western society. In vivo imaging of apoptosis, a defined cascade of cell death, could identify myocardial tissue at risk. METHODS Using 2-(5-[18F]fluoropentyl)-2-methyl-malonic acid ([18F]ML-10) in autoradiography and positron emission tomography (PET) visualized apoptosis in a mouse model of transient ligation of the left anterior descending (LAD) artery. 2-deoxy-2-[18F]fluoro-D-glucose ([18F]FDG) PET imaging indicated the defect area. Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) histology stain indicated cardiac apoptosis. RESULTS [18F]ML-10 uptake was evident in the ischemic area after transient LAD ligation in ex vivo autoradiography and in vivo PET imaging. Detection of [18F]ML-10 is in line with the defect visualized by [18F]FDG and the histological approach of TUNEL staining. CONCLUSION The tracer [18F]ML-10 is suitable for detecting apoptosis after transient LAD ligation in mice.
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Affiliation(s)
- Maximilian Fischer
- Medizinische Klinik Und Poliklinik I, Klinikum Der Universität München, Ludwig-Maximilians-Universität, Marchioninistrasse 15, 81377, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, 80802, Munich, Germany
| | - Mathias J Zacherl
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Jessica Olivier
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Simon Lindner
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Steffen Massberg
- Medizinische Klinik Und Poliklinik I, Klinikum Der Universität München, Ludwig-Maximilians-Universität, Marchioninistrasse 15, 81377, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, 80802, Munich, Germany
| | - Peter Bartenstein
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Freba Grawe
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Sibylle Ziegler
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Matthias Brendel
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Sebastian Lehner
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Guido Boening
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Andrei Todica
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
- Die Radiologie, Munich, Germany.
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Marwarha G, Røsand Ø, Slagsvold KH, Høydal MA. GSK3β Inhibition Is the Molecular Pivot That Underlies the Mir-210-Induced Attenuation of Intrinsic Apoptosis Cascade during Hypoxia. Int J Mol Sci 2022; 23:ijms23169375. [PMID: 36012628 PMCID: PMC9409400 DOI: 10.3390/ijms23169375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/09/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
Apoptotic cell death is a deleterious consequence of hypoxia-induced cellular stress. The master hypoxamiR, microRNA-210 (miR-210), is considered the primary driver of the cellular response to hypoxia stress. We have recently demonstrated that miR-210 attenuates hypoxia-induced apoptotic cell death. In this paper, we unveil that the miR-210-induced inhibition of the serine/threonine kinase Glycogen Synthase Kinase 3 beta (GSK3β) in AC-16 cardiomyocytes subjected to hypoxia stress underlies the salutary protective response of miR-210 in mitigating the hypoxia-induced apoptotic cell death. Using transient overexpression vectors to augment miR-210 expression concomitant with the ectopic expression of the constitutive active GSK3β S9A mutant (ca-GSK3β S9A), we exhaustively performed biochemical and molecular assays to determine the status of the hypoxia-induced intrinsic apoptosis cascade. Caspase-3 activity analysis coupled with DNA fragmentation assays cogently demonstrate that the inhibition of GSK3β kinase activity underlies the miR-210-induced attenuation in the hypoxia-driven apoptotic cell death. Further elucidation and delineation of the upstream cellular events unveiled an indispensable role of the inhibition of GSK3β kinase activity in mediating the miR-210-induced mitigation of the hypoxia-driven BAX and BAK insertion into the outer mitochondria membrane (OMM) and the ensuing Cytochrome C release into the cytosol. Our study is the first to unveil that the inhibition of GSK3β kinase activity is indispensable in mediating the miR-210-orchestrated protective cellular response to hypoxia-induced apoptotic cell death.
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Affiliation(s)
- Gurdeep Marwarha
- Group of Molecular and Cellular Cardiology, Department of Circulation and Medical Imaging, Faculty of Medicine and Health, Norwegian University of Science and Technology (NTNU), 7034 Trondheim, Norway
| | - Øystein Røsand
- Group of Molecular and Cellular Cardiology, Department of Circulation and Medical Imaging, Faculty of Medicine and Health, Norwegian University of Science and Technology (NTNU), 7034 Trondheim, Norway
| | - Katrine Hordnes Slagsvold
- Group of Molecular and Cellular Cardiology, Department of Circulation and Medical Imaging, Faculty of Medicine and Health, Norwegian University of Science and Technology (NTNU), 7034 Trondheim, Norway
- Department of Cardiothoracic Surgery, St. Olavs University Hospital, 7030 Trondheim, Norway
| | - Morten Andre Høydal
- Group of Molecular and Cellular Cardiology, Department of Circulation and Medical Imaging, Faculty of Medicine and Health, Norwegian University of Science and Technology (NTNU), 7034 Trondheim, Norway
- Correspondence: ; Tel.: +47-48134843
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Fischer M, Olivier J, Lindner S, Zacherl MJ, Massberg S, Bartenstein P, Ziegler S, Brendel M, Lehner S, Boening G, Todica A. Detection of cardiac apoptosis by [ 18F]ML-10 in a mouse model of permanent LAD ligation. Mol Imaging Biol 2022; 24:666-674. [PMID: 35352214 PMCID: PMC9296384 DOI: 10.1007/s11307-022-01718-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 11/26/2022]
Abstract
PURPOSE The loss of viable cardiac cells and cell death by myocardial infarction (MI) is still a significant obstacle in preventing deteriorating heart failure. Imaging of apoptosis, a defined cascade to cell death, could identify areas at risk. PROCEDURES Using 2-(5-[18F]fluoropentyl)-2-methyl-malonic acid ([18F]ML-10) in autoradiography and positron emission tomography (PET) visualized apoptosis in murine hearts after permanent ligation of the left anterior descending artery (LAD) inducing myocardial infarction (MI). 2-deoxy-2-[18F]fluoro-D-glucose ([18F]FDG) PET imaging localized the infarct area after MI. Histology by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining validated apoptosis in the heart. RESULTS Accumulation of [18F]ML-10 was evident in the infarct area after permanent ligation of the LAD in autoradiography and PET imaging. Detection of apoptosis by [18F]ML-10 is in line with the defect visualized by [18F]FDG and the histological approach. CONCLUSION [18F]ML-10 could be a suitable tracer for apoptosis imaging in a mouse model of permanent LAD ligation.
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Affiliation(s)
- Maximilian Fischer
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians-Universität, Marchioninistrasse 15, 81377, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, 80802, Munich, Germany
| | - Jessica Olivier
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Simon Lindner
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Mathias J Zacherl
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Steffen Massberg
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, Ludwig-Maximilians-Universität, Marchioninistrasse 15, 81377, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, 80802, Munich, Germany
| | - Peter Bartenstein
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Sibylle Ziegler
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Matthias Brendel
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Sebastian Lehner
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Ambulatory Healthcare Center Dr. Neumaier & Colleagues, Radiology, Nuclear Medicine, Radiation Therapy, Regensburg, Germany
| | - Guido Boening
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Andrei Todica
- Department of Nuclear Medicine, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
- DIE RADIOLOGIE, Munich, Germany.
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Xu C, Liu Y, Yang J, Zhai M, Fan Z, Qiao R, Jin P, Yang L. Effects of berbamine against myocardial ischemia/reperfusion injury: Activation of the 5' adenosine monophosphate-activated protein kinase/nuclear factor erythroid 2-related factor pathway and changes in the mitochondrial state. Biofactors 2022; 48:651-664. [PMID: 35129229 PMCID: PMC9305777 DOI: 10.1002/biof.1820] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/10/2021] [Indexed: 12/13/2022]
Abstract
This study was designed to investigate whether berbamine (BA)-induced cardioprotective effects were related to 5' adenosine monophosphate-activated protein kinase (AMPK)/nuclear factor erythroid 2-related factor (Nrf2) signaling and changes in the mitochondria in myocardial ischemia/reperfusion (I/R) injury. C57/BL6 mice were exposed to BA (10 mg/kg/d), with or without administration of the AMPK specific inhibitor compound C (5 mg/kg/d) or the Nrf2 specific inhibitor ML-385 (30 mg/kg/d), and then subjected to a myocardial I/R operation. As expected, BA significantly improved post-ischemic cardiac function, reduced infarct size and apoptotic cell death, decreased oxidative stress, and improved the mitochondrial state. Furthermore, BA markedly increased AMPK activation, Nrf2 nuclear translocation, and the levels of NAD(P)H quinone dehydrogenase and heme oxygenase-1. Nevertheless, these BA-induced changes were abrogated by compound C. In addition, ML-385 also canceled the cardioprotective effects of BA but had little effect on AMPK activation. Our results demonstrate that BA alleviates myocardial I/R injury and the mitochondrial state by inhibiting apoptosis and oxidative stress via the AMPK/Nrf2 signaling pathway.
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Affiliation(s)
- Chennian Xu
- Department of Cardiovascular SurgeryGeneral Hospital of Northern Theater CommandShenyangChina
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Yang Liu
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Jian Yang
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Mengen Zhai
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Zhenge Fan
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Rui Qiao
- Department of Cardiovascular SurgeryGeneral Hospital of Northern Theater CommandShenyangChina
| | - Ping Jin
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Lifang Yang
- Department of AnesthesiologyXi'an Children's HospitalXi'anChina
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Rout A, Tantry US, Novakovic M, Sukhi A, Gurbel PA. Targeted pharmacotherapy for ischemia reperfusion injury in acute myocardial infarction. Expert Opin Pharmacother 2020; 21:1851-1865. [PMID: 32659185 DOI: 10.1080/14656566.2020.1787987] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Achieving reperfusion immediately after acute myocardial infarction improves outcomes; despite this, patients remain at a high risk for mortality and morbidity at least for the first year after the event. Ischemia-reperfusion injury (IRI) has a complex pathophysiology and plays an important role in myocardial tissue injury, repair, and remodeling. AREAS COVERED In this review, the authors discuss the various mechanisms and their pharmacological agents currently available for reducing myocardial ischemia-reperfusion injury (IRI). They review important original investigations and trials in various clinical databases for treatments targeting IRI. EXPERT OPINION Encouraging results observed in many preclinical studies failed to show similar success in attenuating myocardial IRI in large-scale clinical trials. Identification of critical risk factors for IRI and targeting them individually rather than one size fits all approach should be the major focus of future research. Various newer therapies like tocilizumab, anakinra, colchicine, revacept, and therapies targeting the reperfusion injury salvage kinase pathway, survivor activating factor enhancement, mitochondrial pathways, and angiopoietin-like peptide 4 hold promise for the future.
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Affiliation(s)
- Amit Rout
- Sinai Center for Thrombosis Research and Drug Development, Sinai Hospital of Baltimore, Lifebridge Health , Baltimore, MD, USA
| | - Udaya S Tantry
- Sinai Center for Thrombosis Research and Drug Development, Sinai Hospital of Baltimore, Lifebridge Health , Baltimore, MD, USA
| | - Marko Novakovic
- Sinai Center for Thrombosis Research and Drug Development, Sinai Hospital of Baltimore, Lifebridge Health , Baltimore, MD, USA
| | - Ajaypaul Sukhi
- Sinai Center for Thrombosis Research and Drug Development, Sinai Hospital of Baltimore, Lifebridge Health , Baltimore, MD, USA
| | - Paul A Gurbel
- Sinai Center for Thrombosis Research and Drug Development, Sinai Hospital of Baltimore, Lifebridge Health , Baltimore, MD, USA
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Noureen S, Noreen S, Ghumman SA, Batool F, Bukhari SNA. The genus Cuscuta (Convolvolaceac): An updated review on indigenous uses, phytochemistry, and pharmacology. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2019; 22:1225-1252. [PMID: 32128087 PMCID: PMC7038433 DOI: 10.22038/ijbms.2019.35296.8407] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 05/10/2019] [Indexed: 01/05/2023]
Abstract
Cuscuta, commonly known as dodder, is a genus of family convolvolaceace. Approximately 170 species of Cuscuta are extensively distributed in temperate and subtropical areas of the world. Species of this genus are widely used as essential constituents in functional foods and traditional medicinal systems. Various parts of many members of Cuscuta have been found efficacious against a variety of diseases. Phytochemical investigations have confirmed presence of biologically active moieties such as flavonoids, alkaloids, lignans, saponines, phenolics, tannins, and fatty acids. Pharmacological studies and traditional uses of these plants have proved that they are effective antibacterial, antioxidant, antiostioporotic, hepatoprotective, anti-inflammatory, antitumor, antipyretic, antihypertensive, analgesic, anti hair fall, and antisteriogenic agents.
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Affiliation(s)
- Shazia Noureen
- Department of Chemistry, University of Sargodha, Sargodha-40100, Pakistan
| | - Sobia Noreen
- Department of Chemistry, University of Sargodha, Sargodha-40100, Pakistan
| | | | - Fozia Batool
- Department of Chemistry, University of Sargodha, Sargodha-40100, Pakistan
| | - Syed Nasir Abbas Bukhari
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Aljouf, Sakaka2014, Saudi Arabia
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11
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Molecular machinery and interplay of apoptosis and autophagy in coronary heart disease. J Mol Cell Cardiol 2019; 136:27-41. [DOI: 10.1016/j.yjmcc.2019.09.001] [Citation(s) in RCA: 155] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/01/2019] [Accepted: 09/05/2019] [Indexed: 12/18/2022]
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Hobby ARH, Sharp TE, Berretta RM, Borghetti G, Feldsott E, Mohsin S, Houser SR. Cortical bone-derived stem cell therapy reduces apoptosis after myocardial infarction. Am J Physiol Heart Circ Physiol 2019; 317:H820-H829. [PMID: 31441690 DOI: 10.1152/ajpheart.00144.2019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Ischemic heart diseases such as myocardial infarction (MI) are the largest contributors to cardiovascular disease worldwide. The resulting cardiac cell death impairs function of the heart and can lead to heart failure and death. Reperfusion of the ischemic tissue is necessary but causes damage to the surrounding tissue by reperfusion injury. Cortical bone stem cells (CBSCs) have been shown to increase pump function and decrease scar size in a large animal swine model of MI. To investigate the potential mechanism for these changes, we hypothesized that CBSCs were altering cardiac cell death after reperfusion. To test this, we performed TUNEL staining for apoptosis and antibody-based immunohistochemistry on tissue from Göttingen miniswine that underwent 90 min of lateral anterior descending coronary artery ischemia followed by 3 or 7 days of reperfusion to assess changes in cardiomyocyte and noncardiomyocyte cell death. Our findings indicate that although myocyte apoptosis is present 3 days after ischemia and is lower in CBSC-treated animals, myocyte apoptosis accounts for <2% of all apoptosis in the reperfused heart. In addition, nonmyocyte apoptosis trends toward decreased in CBSC-treated hearts, and although CBSCs increase macrophage and T-cell populations in the infarct region, the occurrence of apoptosis in CD45+ cells in the myocardium is not different between groups. From these data, we conclude that CBSCs may be influencing cardiomyocyte and noncardiomyocyte cell death and immune cell recruitment dynamics in the heart after MI, and these changes may account for some of the beneficial effects conferred by CBSC treatment.NEW & NOTEWORTHY The following research explores aspects of cell death and inflammation that have not been previously studied in a large animal model. In addition, apoptosis and cell death have not been studied in the context of cell therapy and myocardial infarction. In this article, we describe interactions between cell therapy and inflammation and the potential implications for cardiac wound healing.
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Affiliation(s)
- Alexander R H Hobby
- Department of Physiology, Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Thomas E Sharp
- Cardiovascular Center of Excellence, Louisiana State University Health Science Center, New Orleans, Louisiana
| | - Remus M Berretta
- Department of Physiology, Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Giulia Borghetti
- Department of Physiology, Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Eric Feldsott
- Department of Physiology, Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Sadia Mohsin
- Department of Pharmacology, Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Steven R Houser
- Department of Physiology, Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
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Liu Z, Wang H, Hou G, Cao H, Zhao Y, Yang B. Notoginsenoside R1 protects oxygen and glucose deprivation‐induced injury by upregulation of miR‐21 in cardiomyocytes. J Cell Biochem 2018; 120:9181-9192. [PMID: 30552708 DOI: 10.1002/jcb.28194] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 11/12/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Zengjia Liu
- Institute of Forensic Medicine and Laboratory Medicine, Jining Medical University Jining Shandong China
- Forensic Science Center of Jining Medical University Jining Shandong China
| | - Haiyang Wang
- Department of Cardiology Qingdao Municipal Hospital Qingdao Shandong China
| | - Guoliang Hou
- Department of Cardiovascular Medicine Tengzhou Central People's Hospital Tengzhou Shandong China
| | - Honglei Cao
- Department of Cardiology Jining No. 1 People's Hospital Jining Shandong China
| | - Yan Zhao
- Department of Pain Treatment Jining No. 1 People's Hospital Jining Shandong China
| | - Baofa Yang
- Department of Cardiology Jining No. 1 People's Hospital Jining Shandong China
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Zimmer A, Bagchi AK, Vinayak K, Bello-Klein A, Singal PK. Innate immune response in the pathogenesis of heart failure in survivors of myocardial infarction. Am J Physiol Heart Circ Physiol 2018; 316:H435-H445. [PMID: 30525893 DOI: 10.1152/ajpheart.00597.2018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Among the different cardiovascular disease complications, atherosclerosis-induced myocardial infarction (MI) is the major contributor of heart failure (HF) and loss of life. This review presents short- and long-term features of post-MI in human hearts and animal models. It is known that the heart does not regenerate, and thus loss of cardiac cells after an MI event is permanent. In survivors of a heart attack, multiple neurohumoral adjustments as well as simultaneous remodeling in both infarcted and noninfarcted regions of the heart help sustain pump function post-MI. In the early phase, migration of inflammatory cells to the infarcted area helps repair and remove the cell debris, while apoptosis results in the elimination of damaged cardiomyocytes, and there is an increase in the antioxidant response to protect the survived myocardium against oxidative stress (OS) injury. However, in the late phase, it appears that there is a relative increase in OS and activation of the innate inflammatory response in cardiomyocytes without any obvious inflammatory cells. In this late stage in survivors of MI, a progressive slow activation of these processes leads to apoptosis, fibrosis, cardiac dysfunction, and HF. Thus, this second phase of an increase in OS, innate inflammatory response, and apoptosis results in wall thinning, dilatation, and consequently HF. It is important to note that this inflammatory response appears to be innate to cardiomyocytes. Blunting of this innate immune cardiomyocyte response may offer new hope for the management of HF.
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Affiliation(s)
- Alexsandra Zimmer
- Labaratòrio de Fisiologia Cardiovascular, Departmento de Fisiologia, Institute de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Ashim K Bagchi
- Institute of Cardiovascular Sciences, St. Boniface Hospital Albrechtsen Research Centre and Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg, Manitoba , Canada
| | - Kartik Vinayak
- Institute of Cardiovascular Sciences, St. Boniface Hospital Albrechtsen Research Centre and Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg, Manitoba , Canada
| | - Adriane Bello-Klein
- Labaratòrio de Fisiologia Cardiovascular, Departmento de Fisiologia, Institute de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil
| | - Pawan K Singal
- Institute of Cardiovascular Sciences, St. Boniface Hospital Albrechtsen Research Centre and Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg, Manitoba , Canada
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Acute papillary muscle rupture immediately after ST-segment elevation acute myocardial infarction: A case report. J Cardiol Cases 2018; 18:189-191. [DOI: 10.1016/j.jccase.2018.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/13/2018] [Accepted: 07/22/2018] [Indexed: 11/23/2022] Open
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Abstract
ST-segment elevation myocardial infarction is a major cause of morbidity and mortality worldwide. Reperfusion injury (RI) following the opening of an occluded coronary artery mitigates the effect of reperfusion by further accentuating ischemic damage and increasing infarct size. Experimental studies have shown that nearly 50% of final infarct size is attributable to RI, an elusive phenomenon that remains resistant to treatment. This review proposes a hypothesis to explain the failure of strategies that have been used in an attempt to prevent RI. This hypothesis suggests that, after a certain duration of myocardial ischemia in the affected myocardium, three phases of myocardial damage occur: reversible ischemia, irreversible ischemia, and necrosis. In the reversible ischemia phase, cellular adaptive responses remain functional, and cellular repair and thus recovery of cellular functions is possible, whereas in the irreversible ischemia phase protective maneuvers fail to confer cytoprotection. Preventive therapies for RI fail because they cannot prevent cell death once cells have entered the irreversible ischemia phase, although they may succeed in postponing cell death. Failure to salvage myocardium with irreversible ischemia in addition to postponement and change in the mode of cell death (mainly from necrosis to apoptosis) by various RI preventive strategies may be the key to understanding the failure of these strategies in the clinical setting, despite their success in the reduction of infarct size in the experimental setting. Early reperfusion before large amounts of myocardium at risk reach the stage of irreversible ischemia is the best strategy for reduction of RI-related myocardial damage.
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Tong F, Liu S, Yan B, Li X, Ruan S, Yang S. Endogenous ornithine decarboxylase/polyamine system mediated the antagonist role of insulin/PEG-CMCS preconditioning against heart ischemia/reperfusion injury in diabetes mellitus. Int J Nanomedicine 2018; 13:2507-2520. [PMID: 29719397 PMCID: PMC5922236 DOI: 10.2147/ijn.s160848] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
INTRODUCTION Insulin has shown antioxidation and cytoprotective effects to decrease heart ischemia/reperfusion injury (HI/RI) in diabetes mellitus (DM), but the role of insulin/poly(ethylene glycol)-carboxymethyl chitosan (PEG-CMCS) on HI/RI in DM is not known. This research explored whether insulin/PEG-CMCS revealed a protective effect on HI/RI in DM through ornithine decarboxylase (ODC)/polyamine systems. MATERIALS AND METHODS Diabetes was induced via streptozotocin (STZ) in Sprague Dawley (SD) rats, which suffered from HI via blocking the left circumflex artery for 45 minutes, followed by 2 hours of reperfusion. α-Difluoromethylornithine-ethylglyoxal bis (guanylhydrazone) (DFMO-EGBG) and insulin/PEG-CMCS were administered to diabetic rats to explore their roles on severity of HI/RI. RESULTS Insulin could be fleetly and efficiently loaded via the nanocarrier PEG-CMCS at pH =6, showing efficient loading and stable release. In addition, insulin/PEG-CMCS showed significant hypoglycemic activity in diabetic rats. On the other hand, ischemia/reperfusion obviously augmented the contents of creatine kinase (CK), lactic dehydrogenase (LDH), putrescine (Pu), myocardial infarct size, and NF-κB and spermidine/spermine N'-acetyltransferase (SSAT) expressions and decreased the levels of spermine (Sp), polyamine pools (PAs), heart rate (HR), coronary blood flow (CF), left ventricular developed pressure (LVDP), and ODC expression, compared with Sham. Administration of insulin and insulin/PEG-CMCS both reduced the contents of CK, LDH, Pu, myocardial infarct size, and NF-κB and SSAT expressions and increased the levels of Sp, PAs, HR, CF, LVDP, and ODC expression, while insulin/PEG-CMCS significantly indicated the protective results, and DFMO-EGBG showed the opposite effects. CONCLUSION The research showed that insulin/PEG-CMCS could play a protective effect on HR/RI in diabetic rats via its antioxidative, antiapoptotic, and anti-inflammatory roles and modulating ODC/polyamine systems.
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Affiliation(s)
- Fei Tong
- Department of Endocrinology and Diabetes, The First Affiliated Hospital, Xiamen University, Xiamen, China
- Department of Pathology and Pathophysiology, Provincial Key Discipline of Pharmacology, Jiaxing University Medical College, Jiaxing, China
| | - Suhuan Liu
- Department of Endocrinology and Diabetes, The First Affiliated Hospital, Xiamen University, Xiamen, China
| | - Bing Yan
- Department of Endocrinology and Diabetes, The First Affiliated Hospital, Xiamen University, Xiamen, China
| | - Xuejun Li
- Department of Endocrinology and Diabetes, The First Affiliated Hospital, Xiamen University, Xiamen, China
| | - Shiwei Ruan
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Shuyu Yang
- Department of Endocrinology and Diabetes, The First Affiliated Hospital, Xiamen University, Xiamen, China
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18
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Lin S, Chu J, Zhang L, Chen D, Xiao F, Chen H, Lin J, Chen Y, Zhu Y, Peng J. Protective effects of Shexiang Tongxin Dropping Pill on pituitrin‑induced acute myocardial ischemia in rats. Mol Med Rep 2017; 16:3125-3132. [PMID: 28714023 PMCID: PMC5547953 DOI: 10.3892/mmr.2017.6963] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 05/16/2017] [Indexed: 12/12/2022] Open
Abstract
Shexiang Tongxin Dropping Pill (STP) is an established traditional Chinese medicine that is widely used for the treatment of ischemic heart disease (IHD), although its mechanisms remain unclear. The present study investigated the protective effects of STP following pituitrin (PTT)‑induced myocardial ischemia in rats. ST‑segment elevation, blood rheology, and the serum levels of creatine kinase‑MB (CK‑MB) and lactate dehydrogenase (LDH) were measured. Following heart excision, histological analysis using hematoxylin and eosin and terminal deoxynucleotidyl transferase dUTP nick end labeling were performed. The mRNA expression levels of B‑cell lymphoma 2 (Bcl‑2) and Bcl‑2‑associated X protein (Bax) were determined using reverse transcription‑quantitative polymerase chain reaction, and their protein expression was detected using immunohistochemistry. The results demonstrated that STP treatment protected against ST elevation, lowered whole blood viscosity, and reduced the serum levels of CK‑MB and LDH following acute myocardial ischemia. In addition, STP treatment restored the histopathological change following PTT‑induced myocardial ischemia, and resulted in downregulated expression of Bax and upregulated expression of Bcl‑2 in myocardial tissue. The present study demonstrates the cardioprotective ability of STP in a rat model of myocardial ischemic injury, which may be attributed to its anti‑apoptotic properties. The cardioprotective properties of STP require further investigation to determine whether it may be used for the clinical treatment of IHDs.
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Affiliation(s)
- Shan Lin
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Jianfeng Chu
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Ling Zhang
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Daxin Chen
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Fei Xiao
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Hongwei Chen
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Jiumao Lin
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Youqin Chen
- Rainbow Babies and Children's Hospital, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Yuling Zhu
- Inner Mongolia Conba Pharmaceutical Co., Ltd., Shanghai 201318, P.R. China
| | - Jun Peng
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
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19
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Wang JF, Ren X, DeAngelis J, Min J, Zhang Y, Hampton TG, Amende I, Morgan JP. Differential Patterns of Cocaine-Induced Organ Toxicity in Murine Heart versus Liver. Exp Biol Med (Maywood) 2016; 226:52-60. [PMID: 11368239 DOI: 10.1177/153537020122600108] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
To determine cocaine's toxicity in different organs, BALB/c mice were intraperitoneally injected daily for 15 days with either saline or cocaine: 10 mg/kg, 30 mg/kg, or 60 mg/kg. Cardiac function, hepatic pathophysiology, heart and liver apoptosis, and tumor necrosis factor (TNF-α) levels were analyzed. After administration of cocaine, cardiac function decreased. Inflammatory cell infiltration and eosinophilic contraction bands were visible in the hearts of mice treated with 60mg/kg cocaine. Moreover, histopathology demonstrated that cocaine caused hepatic necrosis. TdT-mediated dUTP nick end-labeling (TUNEL) staining and DNA ladder analysis indicated that cocaine caused apoptosis in both the heart and liver. Moreover, immunoassay showed that TNF-α levels significantly increased in the heart and liver with cocaine administration. However, our RT-PCR study showed that there was no significant difference in either the heart or liver in the levels of mRNA for TNF-α between cocaine-treated and saline control mice. The present study demonstrated that cocaine is toxic to multiple organs, and at low dose can induce hepatic damage without gross pathological injury to the heart. The results suggest that the liver is more sensitive than the heart to cocaine toxicity, and induction of apoptosis or TNF-α elevation may be a common mechanism responsible for cocaines toxicity.
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Affiliation(s)
- J F Wang
- The Charles A. Dana Research Institute and Harvard-Thorndike Laboratory, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA
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20
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Sun SL, Guo L, Ren YC, Wang B, Li RH, Qi YS, Yu H, Chang ND, Li MH, Peng HS. Anti-apoptosis effect of polysaccharide isolated from the seeds of Cuscuta chinensis Lam on cardiomyocytes in aging rats. Mol Biol Rep 2014; 41:6117-24. [PMID: 24972571 DOI: 10.1007/s11033-014-3490-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 06/17/2014] [Indexed: 12/19/2022]
Abstract
To investigate the mechanism of apoptosis in myocardial cells of aging rats induced by D-galactose and to study the effect of the Polysaccharide isolated from the seeds of Cuscuta chinensis Lam (PCCL) on apoptosis of cardiomyocytes and its corresponding machinasim in aging rat model. Fifty male SD rats were randomly divided into 5 groups. Normal control group (NC). D-galactose (100 mg · kg(-1)d(-1) for 56 day) indued aging group (MC), D-galactose plus 100 mg kg(-1) d(-1) PCCL group (ML), D-galactose plus 200 mg kg(-1) d(-1) PCCL group (MM), and D-galactose plus 400 mg kg(-1) d(-1) PCCL group (MH). Same volume of solution (water, or PCCL aqueous solution) was given by gavage for 56 days. Then the hearts were collected and apoptosis parameters were evaluated. Caspase-3 and Cyt c were determined by fluorescence spectrometer, the apoptosis rate was assessed by AnnexinV-FITC method by Flow-Cytometry, [Ca(2+)]i and [Ca(2+)]i overloaded by KCL were observed by laser scanning confocal microscopy (LSCM); Bcl-2 and Bax were examined by immunohistochemistry. The content of Cyt C, [Ca(2+)]i of cardiomyocytes, the activity of Caspase-3, Bax expression level in D-galactose induced aging group were higher than NC (p < 0.05). The ratio of Bcl-2/Bax was decreased in D-galactose induced aging group compared to NC. On the other hand, the content of Cyt C, [Ca(2+)]i of cardiomyocytes, the activity of Caspase-3 and apoptosis rate, as well as Bax expression level in all three PCCL groups were decreased compared to galactose induced group (p < 0.05). Bcl-2/Bax ratio was increased in all PCCL groups compared to galactose induced aging group. PCCL could decrease the apoptosis of cardiomyocytes by the mitochondria apoptosis pathway.
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Affiliation(s)
- Shou-Li Sun
- Daqing Campus, Harbin Medical University, Qaqing, China
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21
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Salminen PR, Dahle GO, Moen CA, Wergeland A, Jonassen AK, Haaverstad R, Matre K, Grong K. Reperfusion therapy with low-dose insulin or insulin-like growth factor 2; myocardial function and infarct size in a porcine model of ischaemia and reperfusion. Basic Clin Pharmacol Toxicol 2014; 115:438-47. [PMID: 24751184 PMCID: PMC4291099 DOI: 10.1111/bcpt.12255] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 04/09/2014] [Indexed: 01/04/2023]
Abstract
In an open-chest porcine model, we examined whether myocardial pharmacological conditioning at the time of reperfusion with low-dose insulin or insulin-like growth factor 2 (IGF2), not affecting serum glucose levels, could reduce infarct size and improve functional recovery. Two groups of anaesthetized pigs with either 60 or 40 min. of left anterior descending artery occlusion (total n = 42) were randomized to receive either 0.9% saline, insulin or IGF2 infusion for 15 min., starting 5 min. before a 180-min. reperfusion period. Repeated fluorescent microsphere injections were used to confirm ischaemia and reperfusion. Area at risk and infarct size was determined with Evans blue and triphenyltetrazolium chloride staining. Local myocardial function was evaluated with multi-layer radial tissue Doppler strain and speckle-tracking strain from epicardial echocardiography. Western blotting and TUNEL staining were performed to explore apoptosis. Infarct size did not differ between treatment groups and was 56.7 ± 6.8%, 49.7 ± 9.6%, 56.2 ± 8.0% of area at risk for control, insulin and IGF2 group, respectively, in the 60-min. occlusion series. Corresponding values were 45.6 ± 6.0%, 48.4 ± 7.2% and 34.1 ± 5.8% after 40-min. occlusion. Global and local cardiac function did not differ between treatment groups. No differences related to treatment could be found in myocardial tissue cleaved caspase-3 content or the degree of TUNEL staining. Reperfusion therapy with low-dose insulin or with IGF2 neither reduced infarct size nor improved function in reperfused myocardium in this in vivo porcine model.
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Affiliation(s)
- Pirjo-Riitta Salminen
- Section of Cardiothoracic Surgery, Department of Heart Disease, Haukeland University Hospital, Bergen, Norway; Department of Clinical Science, University of Bergen, Bergen, Norway
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22
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Anti-apoptotic cardioprotective effects of SHP-1 gene silencing against ischemia–reperfusion injury: Use of deoxycholic acid-modified low molecular weight polyethyleneimine as a cardiac siRNA-carrier. J Control Release 2013; 168:125-34. [DOI: 10.1016/j.jconrel.2013.02.031] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 02/01/2013] [Accepted: 02/21/2013] [Indexed: 01/31/2023]
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23
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Bune LT, Larsen JR, Thaning P, Bune NET, Rasmussen P, Rosenmeier JB. Adenosine diphosphate reduces infarct size and improves porcine heart function after myocardial infarct. Physiol Rep 2013; 1:e00003. [PMID: 24303097 PMCID: PMC3831933 DOI: 10.1002/phy2.3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 04/17/2013] [Accepted: 04/18/2013] [Indexed: 12/21/2022] Open
Abstract
Acute myocardial infarction continues to be a major cause of morbidity and mortality. Timely reperfusion can substantially improve outcomes and the administration of cardioprotective substances during reperfusion is therefore highly attractive. Adenosine diphosphate (ADP) and uridine-5-triphoshate (UTP) are both released during myocardial ischemia, influencing hemodynamics. Both mediate the release of tissue plasminogen activator (t-PA), which can reduce infarct size (IS). The objective of this study was to investigate whether exogenous ADP and UTP administration during reperfusion could reduce myocardial IS and whether this correlated to t-PA release or improvements in hemodynamic responses. Hemodynamic variables and t-PA were measured in 22 pigs before, during, and after 45 min of left anterior coronary artery occlusion. During reperfusion, the pigs were randomized to 240 min of intracoronary infusion of ADP, UTP, or control (no intervention). Ischemic area compared to the area at risk [IS/AAR] was measured. [IS/AAR] was 52 ± 11% in the control animals. ADP decreased [IS/AAR] by 19% (P < 0.05), while UTP increased [IS/AAR] by 15% (P < 0.05). Cardiac output (CO) increased from 3.4 to 3.5 L/min (P < 0.05) and mean arterial pressure (MAP) decreased from 87 to 73 mmHg in the ADP group (P < 0.05). t-PA concentration increased in the ADP and UTP group from 2.0 ng/mL to 2.5 and 2.4 ng/mL, respectively (P < 0.05) but remained unchanged in the control group. In conclusion, intracoronary ADP infusion during reperfusion reduces IS by ∼20% independently from systemic release of t-PA. ADP-induced reduction in both preload and afterload could account for the beneficial myocardial effect.
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Affiliation(s)
- Laurids T Bune
- The Copenhagen Muscle Research Centre, Rigshospitalet, University of Copenhagen Copenhagen, Denmark
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24
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Olea FD, De Lorenzi A, Cortés C, Cuniberti L, Fazzi L, Flamenco MDP, Locatelli P, Cabeza Meckert P, Bercovich A, Laguens R, Crottogini A. Combined VEGF gene transfer and erythropoietin in ovine reperfused myocardial infarction. Int J Cardiol 2013; 165:291-8. [DOI: 10.1016/j.ijcard.2011.08.078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 08/17/2011] [Accepted: 08/20/2011] [Indexed: 11/29/2022]
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25
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Falk T, Ljungvall I, Zois N, Höglund K, Olsen L, Pedersen HD, Häggström J. Cardiac Troponin-I Concentration, Myocardial Arteriosclerosis, and Fibrosis in Dogs with Congestive Heart Failure because of Myxomatous Mitral Valve Disease. J Vet Intern Med 2013; 27:500-6. [DOI: 10.1111/jvim.12075] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 12/07/2012] [Accepted: 02/04/2013] [Indexed: 11/30/2022] Open
Affiliation(s)
- T. Falk
- Department of Clinical and Animal Sciences; Faculty of Health and Medical Sciences; University of Copenhagen; Fredriksberg Denmark
| | - I. Ljungvall
- Department of Clinical Sciences; Swedish University of Agricultural Sciences; Uppsala Sweden
| | - N.E. Zois
- Department of Clinical and Animal Sciences; Faculty of Health and Medical Sciences; University of Copenhagen; Fredriksberg Denmark
| | - K. Höglund
- Department of Anatomy; Physiology and Biochemistry; Swedish University of Agricultural Sciences; Uppsala Sweden
| | - L.H. Olsen
- Department of Veterinary Disease Biology; Faculty of Health and Medical Sciences; University of Copenhagen; Fredriksberg Denmark
| | | | - J. Häggström
- Department of Clinical Sciences; Swedish University of Agricultural Sciences; Uppsala Sweden
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Gálvez-Montón C, Prat-Vidal C, Roura S, Farré J, Soler-Botija C, Llucià-Valldeperas A, Díaz-Güemes I, Sánchez-Margallo FM, Arís A, Bayes-Genis A. Transposition of a pericardial-derived vascular adipose flap for myocardial salvage after infarct. Cardiovasc Res 2011; 91:659-67. [PMID: 21576133 DOI: 10.1093/cvr/cvr136] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AIMS Coronary artery occlusion is associated with the risk of ventricular remodelling, heart failure, and cardiogenic shock. Novel strategies are sought to treat these ominous complications. We examined the effect of a pericardial-derived fat flap secured over an acute infarct caused by coronary occlusion. METHODS AND RESULTS A novel intervention consisting of the pericardial isolation of a vascularized adipose flap and its transposition fully covering acute infarcted myocardium was developed in the swine model of coronary artery ligation (n= 52). Left ventricular (LV) ejection fraction and LV end-diastolic and end-systolic volumes were assessed using magnetic resonance imaging (MRI). Infarct size and gene expression analysis were performed on Day 6 and 1 month. Histological changes, collagen volume fraction (CVF), and vascular density were also evaluated on postmortem sections. One month after the intervention, a 18.8% increase in LV ejection fraction (P= 0.007), and significant reductions in LV end-systolic (P= 0.009) and LV end-diastolic volumes (P= 0.03) were found in treated animals compared with the control-MI group. At Day 6, histopathology confirmed a significant infarct size reduction (P= 0.018), the presence of vascular connections at the flap-myocardium interface, and less apoptosis in the infarct border zone compared with control animals (P< 0.001). Up-regulation of genes involved in cell cycle progression, cellular growth and proliferation, and angiogenesis were identified within the flap. CONCLUSIONS Our results indicate that a vascular fat flap exerts beneficial effects on LV function and limits myocardial remodelling. Future studies must confirm whether these findings provide an alternative therapeutic approach for myocardial salvage after infarction.
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Affiliation(s)
- Carolina Gálvez-Montón
- ICREC Research Program, IGTP, Cardiology Service, Hospital Universitari Germans Trias i Pujol, Ctra. Can Ruti, Camí de Escoles, s/n, 08916 Badalona, Barcelona, Spain.
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Zhong H, Xin H, Wu LX, Zhu YZ. Salidroside attenuates apoptosis in ischemic cardiomyocytes: a mechanism through a mitochondria-dependent pathway. J Pharmacol Sci 2011; 114:399-408. [PMID: 21160132 DOI: 10.1254/jphs.10078fp] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
In the present study, we investigated cardioprotective effects of salidroside, isolated from Rhodiola rosea L, on oxygen-glucose deprivation (OGD)-induced cardiomyocyte death and ischemic injury evoked by acute myocardial infarction (AMI) in rats. Pretreatment with salidroside notably ameliorated cell viability losses in a dose-dependant manner and in parallel it alleviated morphologic injury detected by electron microscopy. Mechanistically, diminished OGD-induced cardiomyocyte apoptosis was shown in salidroside-pretreated cardiomyocytes, in accordance with minimal reactive oxygen species (ROS) burst. Moreover, salidroside markedly upregulated the Bcl-2/Bax ratio and preserved mitochondrial transmembrane potential (ΔΨm). Salidroside administration also inhibited myocardial apoptosis in AMI rats by increasing phosphorylation of Akt and decreasing activation of caspase-3. These findings suggest that salidroside reduced ischemia-mediated myocardial damage. Salidroside therefore has potential to be a promising drug for preventing and treating myocardial ischemic diseases.
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Affiliation(s)
- Han Zhong
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
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Laskar A, Miah S, Andersson RGG, Li W. Prevention of 7β-hydroxycholesterol-induced cell death by mangafodipir is mediated through lysosomal and mitochondrial pathways. Eur J Pharmacol 2010; 640:124-8. [PMID: 20452343 DOI: 10.1016/j.ejphar.2010.04.046] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Revised: 04/05/2010] [Accepted: 04/24/2010] [Indexed: 01/23/2023]
Abstract
Mangafodipir, a MRI contrast agent, has been used as a viability marker in patients with myocardial infarction and showed vascular relaxation effect. It confers myocardial protection against oxidative stress. However mechanisms underlying such protection have not yet been investigated. In this investigation we first studied whether mangafodipir inhibits apoptosis induced by 7beta-hydroxycholesterol (7betaOH), a cytotoxic cholesterol oxidation product found in atherosclerotic lesions in humans and in heart of ethanol-fed rats. We then focused on whether mangafodipir influences the production of reactive oxygen species, lysosomal and mitochondrial membrane permeabilities in the cell model. Our results revealed that pre-treatment with mangafodipir (400 microM) protected against cellular reactive oxygen species production, apoptosis, and permeabilization of lysosomal and mitochondrial membranes induced by 7betaOH. In conclusion, a novel effect of mangafodipir on 7betaOH-induced apoptosis is via reduction of cellular reactive oxygen species and stabilization of lysosomal and mitochondrial membranes. This is the first report to show the additional cytoprotective effect of mangafodipir, which may suggest possible use of the drug.
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Affiliation(s)
- Amit Laskar
- Division of Drug Research/Pharmacology, Department of Medical and Health Sciences, Faculty of Health Sciences, Linköping University, SE-581 85 Linköping, Sweden
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Charan Sahoo K, Arora S, Goyal S, Kishore K, Ray R, Chandra Nag T, Singh Arya D. Cardioprotective effects of benazepril, an angiotensin-converting enzyme inhibitor, in an ischaemia-reperfusion model of myocardial infarction in rats. J Renin Angiotensin Aldosterone Syst 2009; 10:201-9. [DOI: 10.1177/1470320308353059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Introduction. The present study evaluated the effects of benazepril, an angiotensin-converting enzyme inhibitor on haemodynamic, biochemical, and immunohistochemical (Bax and Bcl-2 protein) indices in ischaemia and reperfusion (IR) injury. Materials and methods. Male Wistar albino rats were divided into three groups and were orally administered saline once daily (IR-sham and IR-control) or benazepril (30 mg/kg/day; IR-benazepril) for 14 days. On the 15th day, in the IR-control and IR-benazepril groups, rats were subjected to left anterior descending coronary artery occlusion for 45 minutes followed by a one-hour reperfusion. Haemodynamic parameters were recorded and rats were sacrificed; hearts were isolated for biochemical estimation and immunohistochemistry. Results. In the IR-control group, significant ventricular dysfunctions (p<0.05 vs. IR-sham group) were observed along with enhanced expression of pro-apoptotic protein Bax. A decline in lactate dehydrogenase activity and increased content of thiobarbituric acid reactive substances, a marker of lipid peroxidation, were observed. Benazepril pretreatment significantly improved mean arterial pressure (p<0.01), reduced left ventricular end-diastolic pressure (p<0.05), and improved both inotropic and lusitropic function of the heart (+LVdP/dt and — LVdP/dt) (p<0.05; p<0.01) as compared to IR-control. Furthermore, benazepril treatment significantly decreased the level of thiobarbituric acid reactive substances and restored the activity of lactate dehydrogenase towards normal value (p<0.05 vs. IR-control). Conclusion. This study demonstrates that benazepril upregulated Bcl-2 protein and decreased Bax protein expression, thus exhibiting anti-apoptotic effects. These beneficial effects of benazepril will have an important implication in the therapeutic use of benazepril in ischaemic heart disease.
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Affiliation(s)
- Kanhei Charan Sahoo
- Department of Pharmacology, All India Institute of Medical Sciences, Ansari Nager, New Delhi-110029, India
| | - Sachin Arora
- Department of Pharmacology, All India Institute of Medical Sciences, Ansari Nager, New Delhi-110029, India
| | - Sameer Goyal
- Department of Pharmacology, All India Institute of Medical Sciences, Ansari Nager, New Delhi-110029, India
| | - Kamal Kishore
- Department of Pharmacology, All India Institute of Medical Sciences, Ansari Nager, New Delhi-110029, India
| | - Ruma Ray
- Department of Pathology, All India Institute of Medical Sciences, Ansari Nager, New Delhi-110029, India
| | - Tapas Chandra Nag
- Department of Anatomy, All India Institute of Medical Sciences, Ansari Nager, New Delhi-110029, India
| | - Dharamvir Singh Arya
- Department of Pharmacology, All India Institute of Medical Sciences, Ansari Nager, New Delhi-110029, India,
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Overexpression of the NHE1 isoform of the Na+/H+ exchanger causes elevated apoptosis in isolated cardiomyocytes after hypoxia/reoxygenation challenge. Mol Cell Biochem 2009; 338:47-57. [DOI: 10.1007/s11010-009-0337-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Accepted: 11/19/2009] [Indexed: 12/27/2022]
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Nozyński J, Zakliczyński M, Konecka-Mrówka D, Zegleń S, Przybylski R, Zembala M, Lange D, Zembala-Nozyńska E, Mecik-Kronenberg T, Dabrówka K. Differences in antiapoptotic, proliferative activities and morphometry in dilated and ischemic cardiomyopathy: study of hearts explanted from transplant recipients. Transplant Proc 2009; 41:3171-8. [PMID: 19857704 DOI: 10.1016/j.transproceed.2009.09.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Antiapoptotic as well as replacement and proliferative mechanisms take place in the myocardium in dilated cardiomyopathy (DCM) and ischemic heart disease (IHD). We sought to estimate antiapoptotic, proliferative and replacement activities in cardiomyopathies. MATERIALS The study groups included seven hearts with DCM and eight with IHD, which had been explanted at the time of transplantation. The comparator group consisted of cases of myocardial hypertrophy and the control group, donor fragments. METHODS Antiapoptotic and proliferative responses were determined immunohistochemically as Bcl-2 and Ki67 expression by semiquantitative assessment of the intensity of staining. We also measured and statistically analyzed the integrative morphometric measurements of the fraction of fibrosis area, the nucleosarcoplasmic ratio, and cardiocyte diameter. RESULTS No Bcl-2 expression was observed in the controls. The strongest reaction was seen in the DCM group, then in the IHD, and in the comparator group of myocardial hypertrophy. Proliferative activity was seen only in endocardial and interstitial fibroblasts in DCM and IHD cases. The cardiocyte diameter showed no statistical association between myocardial hypertrophy and IHD, or IHD and DCM, whereas the nucleosarcoplasmic ratios were significantly different from control groups for all comparisons. Myocardial fibrosis showed the highest values in DCM and IHD. Discriminant analysis showed the value of interstitial fibrosis and cardiocyte diameter to categorize the analyzed groups. CONCLUSIONS Antiapoptotic Bcl-2 activity seemed to play an important role in cardiocyte preservation, while proliferative activity was resticted to interstitial connective tissue cells as a replacement process. Myocardial Bcl-2 expression, the extent of myocardial fibrosis, and cardiocyte diameter may serve as additional diagnostic tools to differentiate cardiomyopathies.
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Affiliation(s)
- J Nozyński
- Silesian Centre for Heart Diseases, 41-800 Zabrze, Poland
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Zhao WS, Xu L, Wang LF, Zhang L, Zhang ZY, Liu Y, Liu XL, Yang XC, Cui L, Zhang L. A 60-s postconditioning protocol by percutaneous coronary intervention inhibits myocardial apoptosis in patients with acute myocardial infarction. Apoptosis 2009; 14:1204-11. [DOI: 10.1007/s10495-009-0387-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Nakamura R, Takahashi A, Yamada T, Miyai N, Irie H, Kinoshita N, Sawada T, Azuma A, Matsubara H. Erythropoietin in patients with acute coronary syndrome and its cardioprotective action after percutaneous coronary intervention. Circ J 2009; 73:1920-6. [PMID: 19690392 DOI: 10.1253/circj.cj-09-0219] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Erythropoietin (EPO) has been shown to have effects beyond hematopoiesis, such as prevention of cardiac apoptosis. The purpose of the current study is to examine the influence of the time-course change in the serum concentration of endogenous EPO on cardiac functions in the chronic phase in patients with acute coronary syndrome, who successfully achieved reperfusion by primary percutaneous coronary intervention (PCI). METHODS AND RESULTS The prospective study included 34 patients with angiographically documented coronary artery disease, including 24 patients with acute myocardial infarction (AMI) and 10 patients with unstable angina pectoris (UAP) who underwent successful PCI within 24 h from the onset. Serum EPO concentration significantly increased at Day 3 and Day 7 compared with that at Day 1 in the AMI group, and the level at Day 3 was significantly higher in the AMI group than in the UAP group. There were significant correlations between DeltaEPO and Delta left ventricular ejection fraction (LVEF) or Delta left ventricular end-diastolic volume index and between peak EPO concentration and DeltaLVEF. CONCLUSIONS These data showed the time-dependent increase of serum EPO in AMI patients after primary PCI, indicating its possible contribution to cardioprotective effect in the chronic phase.
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Affiliation(s)
- Reo Nakamura
- Department of Cardiology, Kouseikai Takeda Hospital, Kyoto, Japan.
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Dincer Y, Himmetoglu S, Bozcali E, Vural VA, Akcay T. Circulating p53 and cytochrome c levels in acute myocardial infarction patients. J Thromb Thrombolysis 2009; 29:41-5. [PMID: 19551350 DOI: 10.1007/s11239-009-0328-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Accepted: 03/02/2009] [Indexed: 02/01/2023]
Abstract
BACKGROUND Apoptosis causes myocardiocyte loss during and after myocardial infarction. Therapeutic approaches designed to arrest apoptosis would be a significant new development in the recovery of acute myocardial infarction (AMI). In order to examine apoptotic markers in the circulation, serum levels of p53 and cytochrome c were assessed in patients with AMI. METHODS Blood samples were taken on admission (before initiation of therapy) and on the 3rd and 7th days of hospitalization. Serum levels of p53 and cytochrome c were measured by enzyme-linked immunassay. RESULTS The serum level of p53 was higher in AMI patients on admission compared to the control group. A time-dependent decrease was observed in the serum level of p53, but there was no significant change in the serum level of cytochrome c during therapy. CONCLUSIONS p53, but not cytochrome c, appears to have potential as a biomarker for reporting on apoptosis following myocardial infarction.
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Affiliation(s)
- Yildiz Dincer
- Department of Biochemistry, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey.
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Park M, Shen YT, Gaussin V, Heyndrickx GR, Bartunek J, Resuello RRG, Natividad FF, Kitsis RN, Vatner DE, Vatner SF. Apoptosis predominates in nonmyocytes in heart failure. Am J Physiol Heart Circ Physiol 2009; 297:H785-91. [PMID: 19465551 DOI: 10.1152/ajpheart.00310.2009] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The goal of this investigation was to determine the distribution of myocardial apoptosis in myocytes and nonmyocytes in primates and patients with heart failure (HF). Almost all clinical cardiologists and cardiovascular investigators believe that myocyte apoptosis is considered to be a cardinal sign of HF and a major factor in its pathogenesis. However, with the knowledge that 75% of the number of cells in the heart are nonmyocytes, it is important to determine whether the apoptosis in HF is occurring in myocytes or in nonmyocytes. We studied both a nonhuman primate model of chronic HF, induced by rapid pacing 2-6 mo after myocardial infarction (MI), and biopsies from patients with ischemic cardiomyopathy. Dual labeling with a cardiac muscle marker was used to discriminate apoptosis in myocytes versus nonmyocytes. Left ventricular ejection fraction decreased following MI (from 78% to 60%) and further with HF (35%, P < 0.05). As expected, total apoptosis was increased in the myocardium following recovery from MI (0.62 cells/mm(2)) and increased further with the development of HF (1.91 cells/mm(2)). Surprisingly, the majority of apoptotic cells in MI and MI + HF, and in both the adjacent and remote areas, were nonmyocytes. This was also observed in myocardial biopsies from patients with ischemic cardiomyopathy. We found that macrophages contributed the largest fraction of apoptotic nonmyocytes (41% vs. 18% neutrophils, 16% fibroblast, and 25% endothelial and other cells). Although HF in the failing human and monkey heart is characterized by significant apoptosis, in contrast to current concepts, the apoptosis in nonmyocytes was eight- to ninefold greater than in myocytes.
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Affiliation(s)
- Misun Park
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, University of Medicineand Dentistry of New Jersey, New Jersey Medical School, Newark, New Jersey 07103, USA
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Casalod Y, Alegret R, Martinez-Jarreta B, Gomez Zapata M, Luna A. Association between immunohistochemical markers of myocardial damage and apoptosis. Leg Med (Tokyo) 2009; 11 Suppl 1:S311-2. [DOI: 10.1016/j.legalmed.2009.02.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2008] [Revised: 02/09/2009] [Accepted: 02/12/2009] [Indexed: 11/25/2022]
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French CJ, Spees JL, Zaman AKMT, Taatjes DJ, Sobel BE. The magnitude and temporal dependence of apoptosis early after myocardial ischemia with or without reperfusion. FASEB J 2008; 23:1177-85. [PMID: 19095733 DOI: 10.1096/fj.08-116509] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In view of the conventional wisdom in the cardiology literature that apoptosis is extensive early after myocardial ischemia, predicated largely from results with the TUNEL assay known to be nonspecific, this study was performed to delineate its extent with multiple assays and at multiple intervals. Coronary occlusion with and without subsequent revascularization was induced in 10-wk-old C57BL6 mice subjected to 1 or 4 h of transient ligation followed by 24 h of reperfusion, or 24 h persistent ligation. Apoptosis was quantified throughout the left ventricle immunohistochemically by assay of TUNEL, single-stranded DNA (ssDNA), and cleaved caspase 3; electron microscopy (EM); and activity assays of caspase 3 and 8. TUNEL staining was marked, but ssDNA and cleaved caspase 3 staining were significantly less (P<0.001 compared with TUNEL), and apoptosis defined by EM was virtually absent in all groups. Caspase 3 and caspase 8 activities per milligram protein were not significantly different from those in normal hearts. Only rare, potentially apoptotic cells were seen by EM in hearts from any group. Thus, the results with TUNEL were not specific, and the extent of apoptosis was markedly less than that predicated on the results with the TUNEL procedure. Apoptosis is de minimus early after transitory or persistent ischemia, though it is overestimated by TUNEL assays. Thus, antiapoptotic interventions per se are not likely to preserve substantial amounts of myocardium early after ischemic insults.
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Fliegel L. Regulation of the Na+/H+exchanger in the healthy and diseased myocardium. Expert Opin Ther Targets 2008; 13:55-68. [PMID: 19063706 DOI: 10.1517/14728220802600707] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Sodium tanshinone IIA sulfonate protects cardiomyocytes against oxidative stress-mediated apoptosis through inhibiting JNK activation. J Cardiovasc Pharmacol 2008; 51:396-401. [PMID: 18427283 DOI: 10.1097/fjc.0b013e3181671439] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Sodium tanshinone IIA sulfonate (STS) is a water-soluble derivative of tanshinone IIA, a well-known Chinese medicine for treating cardiovascular disorders. Cardiomyocyte apoptosis plays a major role in the development of cardiovascular diseases. The present study was designed to investigate the effects of STS on cardiomyocyte apoptosis induced by in vivo acute myocardial infarction (MI) in adult rats and by in vitro H2O2-treated neonatal rat ventricular myocytes. In MI rats, STS significantly reduced the infarct sizes, the blood lactate dehydrogenase (LDH) level, and the number of apoptotic cardiomyocytes in the infarcted hearts. In the in vitro study, STS reversed the decreased effect of cell viability induced by H2O2. In addition, STS also markedly inhibited H2O2-induced cardiomyocyte apoptosis. C-Jun N-terminal kinases/stress-activated protein kinases (JNKs/SAPKs) and p38 MAPK are classic oxidative stress-activated protein kinases. Our further mechanistic study revealed that increased JNK phosphorylation stimulated by H2O2 was abolished by STS treatment. In conclusion, inhibition of JNK activation plays a significant role in cardioprotective effects of STS.
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Cardiomyocyte death and renewal in the normal and diseased heart. Cardiovasc Pathol 2008; 17:349-74. [PMID: 18402842 DOI: 10.1016/j.carpath.2008.02.004] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2007] [Revised: 11/30/2007] [Accepted: 02/04/2008] [Indexed: 02/07/2023] Open
Abstract
During post-natal maturation of the mammalian heart, proliferation of cardiomyocytes essentially ceases as cardiomyocytes withdraw from the cell cycle and develop blocks at the G0/G1 and G2/M transition phases of the cell cycle. As a result, the response of the myocardium to acute stress is limited to various forms of cardiomyocyte injury, which can be modified by preconditioning and reperfusion, whereas the response to chronic stress is dominated by cardiomyocyte hypertrophy and myocardial remodeling. Acute myocardial ischemia leads to injury and death of cardiomyocytes and nonmyocytic stromal cells by oncosis and apoptosis, and possibly by a hybrid form of cell death involving both pathways in the same ischemic cardiomyocytes. There is increasing evidence for a slow, ongoing turnover of cardiomyocytes in the normal heart involving death of cardiomyocytes and generation of new cardiomyocytes. This process appears to be accelerated and quantitatively increased as part of myocardial remodeling. Cardiomyocyte loss involves apoptosis, autophagy, and oncosis, which can occur simultaneously and involve different individual cardiomyocytes in the same heart undergoing remodeling. Mitotic figures in myocytic cells probably represent maturing progeny of stem cells in most cases. Mitosis of mature cardiomyocytes that have reentered the cell cycle appears to be a rare event. Thus, cardiomyocyte renewal likely is mediated primarily by endogenous cardiac stem cells and possibly by blood-born stem cells, but this biological phenomenon is limited in capacity. As a consequence, persistent stress leads to ongoing remodeling in which cardiomyocyte death exceeds cardiomyocyte renewal, resulting in progressive heart failure. Intense investigation currently is focused on cell-based therapies aimed at retarding cardiomyocyte death and promoting myocardial repair and possibly regeneration. Alteration of pathological remodeling holds promise for prevention and treatment of heart failure, which is currently a major cause of morbidity and mortality and a major public health problem. However, a deeper understanding of the fundamental biological processes is needed in order to make lasting advances in clinical therapeutics in the field.
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Secondary necrosis in multicellular animals: an outcome of apoptosis with pathogenic implications. Apoptosis 2008; 13:463-82. [PMID: 18322800 PMCID: PMC7102248 DOI: 10.1007/s10495-008-0187-8] [Citation(s) in RCA: 155] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2008] [Accepted: 02/14/2008] [Indexed: 01/11/2023]
Abstract
In metazoans apoptosis is a major physiological process of cell elimination during development and in tissue homeostasis and can be involved in pathological situations. In vitro, apoptosis proceeds through an execution phase during which cell dismantling is initiated, with or without fragmentation into apoptotic bodies, but with maintenance of a near-to-intact cytoplasmic membrane, followed by a transition to a necrotic cell elimination traditionally called “secondary necrosis”. Secondary necrosis involves activation of self-hydrolytic enzymes, and swelling of the cell or of the apoptotic bodies, generalized and irreparable damage to the cytoplasmic membrane, and culminates with cell disruption. In vivo, under normal conditions, the elimination of apoptosing cells or apoptotic bodies is by removal through engulfment by scavengers prompted by the exposure of engulfment signals during the execution phase of apoptosis; if this removal fails progression to secondary necrosis ensues as in the in vitro situation. In vivo secondary necrosis occurs when massive apoptosis overwhelms the available scavenging capacity, or when the scavenger mechanism is directly impaired, and may result in leakage of the cell contents with induction of tissue injury and inflammatory and autoimmune responses. Several disorders where secondary necrosis has been implicated as a pathogenic mechanism will be reviewed.
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Kobara M, Sunagawa N, Abe M, Tanaka N, Toba H, Hayashi H, Keira N, Tatsumi T, Matsubara H, Nakata T. Apoptotic myocytes generate monocyte chemoattractant protein-1 and mediate macrophage recruitment. J Appl Physiol (1985) 2007; 104:601-9. [PMID: 18048593 DOI: 10.1152/japplphysiol.00254.2007] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The mechanisms by which apoptotic myocytes are removed by macrophages have not been fully elucidated. This study examined whether apoptotic myocytes actively recruit macrophages by generating monocyte chemoattractant protein-1 (MCP-1) in experiments in vitro and in vivo. Neonatal rat cardiac myocytes were incubated for 4 h in the presence or absence of staurosporine (STS, 0.2-1 mumol/l), an apoptosis inducer. Nuclear staining with DAPI showed that STS induced apoptosis in a dose-dependent fashion. STS (1 mumol/l) caused extensive DNA fragmentation and increased caspase-3 activity compared with a serum-deprived control. MCP-1 mRNA and protein levels in myocytes increased twofold and fourfold, respectively, on STS treatment, and immunochemical staining revealed that apoptotic myocytes expressed MCP-1. To elucidate the role of MCP-1 expressed in apoptotic myocytes to recruit macrophages/monocytes, rat monocytes were incubated in the supernatant of STS-treated myocytes using a trans-well system. The culture medium of STS-treated myocytes recruited monocytes in a MCP-1-dependent fashion. In addition, experiments were performed in vivo using ischemia-reperfused rat hearts. Rats were subjected to 30 min of ligation of the left coronary artery followed by 24 h of reperfusion. After the reperfusion, in the ischemic border myocardium, 17.1 +/- 1.1% of myocytes were terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) positive. Moreover, double staining using the TUNEL technique and immunohistochemistry with MCP-1 antibody showed that 69.8 +/- 3.9% of TUNEL-positive myocytes expressed MCP-1 protein. Concomitantly, activated macrophages infiltrated the areas of apoptosis remarkably. These results suggest that apoptotic myocytes produce MCP-1, which have a critical role in the active recruitment of macrophages.
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Affiliation(s)
- Miyuki Kobara
- Dept. of Clinical Pharmacology, Kyoto Pharmaceutical University, 5 Misasagi Nakauchi-cho, Yamashina-ku, Kyoto, Japan.
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Nozynski J, Zakliczynski M, Zembala-Nozynska E, Konecka-Mrowka D, Nikiel B, Przybylski R, Lange D, Maruszewski M, Zembala M. Transplanted Heart Cardiomyocytes Reveal Continous Expression of Antiapoptotic Bcl-2 Protein. Transplant Proc 2007; 39:2841-5. [DOI: 10.1016/j.transproceed.2007.08.075] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
The discovery of apoptosis sheds a new light on the role of cell death in myocardial infarction and other cardiovascular diseases. There is mounting evidence that apoptosis plays an important role at multiple points in the evolution of myocardial infarction, and comprises not only cardiomyocytes but also inflammatory cells, as well as cells of granulation tissue and fibrous tissue. It appears that apoptosis contributes to cardiomyocyte loss in the border zone and in remote myocardium in the early phase, as well as months after myocardial infarction, thus playing a role in remodeling and development of heart failure after myocardial infarction. Apoptosis, being a highly regulated process, is a potential target for therapeutic intervention. Caspases are the key effector molecules in apoptosis, and are therefore a particularly attractive target for pharmacological modulation of apoptosis. Although several potential therapeutic agents have been tested in animal models of ischemia/reperfusion heart injury with some success, nearly none of the specific antiapoptotic agents have reached the stage of clinical research.
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Affiliation(s)
- Nina Zidar
- Institute of Pathology, Medical Faculty, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia
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Gok S, Vatansever S, Vural K, Sekuri C, Izanli A, Tezcan A, Cilaker S. The role of ATP sensitive K+ channels and of nitric oxide synthase on myocardial ischemia/reperfusion-induced apoptosis. Acta Histochem 2006; 108:95-104. [PMID: 16566960 DOI: 10.1016/j.acthis.2006.01.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2005] [Revised: 01/08/2006] [Accepted: 01/15/2006] [Indexed: 10/24/2022]
Abstract
During ischemia, ATP-sensitive K+ channels (KATP channels) open, and this triggers necrotic processes and apoptosis. In this study, we investigated whether selective sarcoplasmic and mitochondrial KATP channel blockers affected myocardial apoptosis and nitric oxide synthase (NOS) activity in a rat model of myocardial ischemia/reperfusion in vitro. Isolated rat hearts were subjected to 30 min of coronary artery occlusion followed by 30 min of reperfusion. A selective sarcKATP channel blocker, HMR1098 and a selective mitoKATP channel blocker, 5-hydroxydecanoate, were added to the perfusion fluid 10 min before occlusion. Myocardial apoptosis was detected immunohistochemically using the TUNEL method. Myocardial inducible NOS (iNOS) and endothelial NOS (eNOS) were determined immunohistochemically. In control hearts, apoptosis induction was associated with a greater immunoreactivity of iNOS than eNOS. Treatment with HMR1098, at a concentration of 3 micromol/l, significantly reduced the TUNEL-positive cardiomyocytes and this was associated with decreased iNOS and increased eNOS immunoreactivity. When this drug was administered at a higher concentration, at 30 micromol/l, a more marked reduction in apoptosis was observed but, in contrast to the effects observed at the lower drug concentration, eNOS immunoreactivity was almost completely abolished while iNOS was strong. Moreover, ischemia-induced cardiac dysfunction (e.g. contractile force and recovery of coronary flow) was increased by the higher concentration of HMR 1098. In hearts treated with 5-hydroxydecanoate, myocyte apoptosis was slightly reduced, and this was associated with an almost equal increase in both iNOS and eNOS immunoreactivity. These findings suggest that iNOS appears to be more important than eNOS in the reduction of apoptosis. However, the further inhibition of apoptosis by the higher concentration of HMR 1098 was associated with poorer cardiac function.
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Affiliation(s)
- Sule Gok
- Department of Pharmacology, School of Medicine, Celal Bayar University, 45020 Manisa, Turkey.
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Capano M, Crompton M. Bax translocates to mitochondria of heart cells during simulated ischaemia: involvement of AMP-activated and p38 mitogen-activated protein kinases. Biochem J 2006; 395:57-64. [PMID: 16321138 PMCID: PMC1409704 DOI: 10.1042/bj20051654] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2005] [Revised: 11/23/2005] [Accepted: 12/01/2005] [Indexed: 11/17/2022]
Abstract
The cytosolic protein Bax plays a key role in apoptosis by migrating to mitochondria and releasing proapoptotic proteins from the mitochondrial intermembrane space. The present study investigates the movement of Bax in isolated rat neonatal cardiomyocytes subjected to simulated ischaemia (minus glucose, plus cyanide), using green fluorescent protein-tagged Bax as a means of imaging Bax movements. Simulated ischaemia induced Bax translocation from the cytosol to mitochondria, commencing within 20 min of simulated ischaemia and progressing for several hours. Under the same conditions, there was an increase in the active, phosphorylated forms of p38 MAPK (mitogen-activated protein kinase) and AMPK (AMP-activated protein kinase). The AMPK activators AICAR (5-aminoimidazole-4-carboxamide ribonucleoside) and metformin also stimulated Bax translocation. Inhibition of p38 MAPK with SB203580 attenuated the phosphorylation of the downstream substrates, MAPK-activated protein kinases 2 and 3, but not that of the upstream MAPK kinase 3, nor of AMPK. Under all conditions (ischaemia, AICAR and metformin), SB203580 blocked Bax translocation completely. It is concluded that Bax translocation to mitochondria is an early step in ischaemia and that it occurs in response to activation of p38 MAPK downstream of AMPK.
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Key Words
- amp-activated protein kinase (ampk)
- bax
- green fluorescent protein
- imaging
- ischaemia
- phosphorylation
- aicar, 5-aminoimidazole-4-carboxamide ribonucleoside
- ampk, amp-activated protein kinase
- ampkk, ampk kinase
- gfp, green fluorescent protein
- jnk, c-jun n-terminal kinase
- mapk, mitogen-activated protein kinase
- mapkapk, mapk-activated protein kinase
- mkk3, mapk kinase 3
- mtr, mitotracker red
- stkii, serine/threonine-protein kinase ii
- vdac, voltage-dependent anion channel
- zmp, aicar monophosphate
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Affiliation(s)
- Michela Capano
- Department of Biochemistry and Molecular Biology, University College London, Gower Street, London WC1E 6BT, U.K
| | - Martin Crompton
- Department of Biochemistry and Molecular Biology, University College London, Gower Street, London WC1E 6BT, U.K
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Abstract
The recognition that cardiac myocytes die by multiple mechanisms and thus substantially affect ventricular remodeling in diseased human hearts supports the concept of ongoing myocyte death in the progression of heart failure and constitutes the basis of this review. In addition, based on the pathophysiology of myocardial cell deaths, the present study emphasizes that currently methodologies, although with some inherent limitations, are available to recognize and measure quantitatively the contribution of myocyte cell death to the progression of the pathologic state of the heart. Our own studies show that application of such methodologies including modern microscopy techniques and the use of different molecular and immunohistochemical markers may generate the consensus that myocyte cell death is a quantifiable parameter in the normal and pathological human heart. The present study also demonstrates that myocyte cell death, apoptotic, oncotic or autophagic in nature, has to be regarded as an additional critical variable of the multifactorial events implicated in the alterations of cardiac anatomy and myocardial structure of the diseased human heart.
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Affiliation(s)
- Sawa Kostin
- Department of Experimental Cardiology, Max-Planck Institute, Bad Nauheim, Germany
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49
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Schwarz K, Simonis G, Yu X, Wiedemann S, Strasser RH. Apoptosis at a distance: Remote activation of caspase-3 occurs early after myocardial infarction. Mol Cell Biochem 2006; 281:45-54. [PMID: 16328956 DOI: 10.1007/s11010-006-0233-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2005] [Accepted: 06/27/2005] [Indexed: 11/27/2022]
Abstract
OBJECTIVE After an acute myocardial infarction, the viable myocardium remote from the infarct zone is subjected to ventricular remodeling. Besides hypertrophy, processes of apoptosis may contribute to these remodeling processes. Reports on apoptosis in this area have been doubted because they were mainly based on in-situ nick-end DNA labeling (TUNEL) measurements, with questionable specifity. Moreover, the time course of initiation of these processes has not been characterized. Therefore the goals of this study were to (1) reliably determine if in the remote area of the infarcted heart apoptosis may be initiated using highly specific biochemical markers and (2) evaluate the time course of such an activation. METHODS A well-defined model, regional myocardial infarction induced by ligation of the left anterior coronary artery in rats in vivo, was used. Heart and lung wet weights, the left ventricular end-diastolic pressure (LVEDP), and the serum level of the atrial natriuretic propeptide (proANP) were determined from 1 day up to 4 weeks as indicators of developing heart failure. In transmural biopsies from the non-ischemic left ventricular wall of the infarcted heart, the activation of caspase-3, the bcl-2/bax ratio (Western blot analysis), and the DNA laddering (LM-PCR) were determined. RESULTS Although heart- and lung weights did not increase before 1 week after infarction, proANP levels were elevated already 1 day after myocardial infarction suggesting early sub-clinical heart failure. The activity of caspase-3 increased significantly to 160+/- 20% compared to sham operated controls as early as 1 day after ligation and remained elevated over the entire time course. In parallel, the bcl-2/bax ratio shifted toward the pro-apoptotic bax. Moreover, these clear and specific biochemical indicators of apoptosis in the remote area of the infarcted heart were paralleled by the fragmentation of genomic DNA. CONCLUSION These data demonstrate that apoptotic markers are activated in the surviving zone of the heart remote from the infarct area as early as 1 day after myocardial infarction with persistence for up to 4 weeks. This activation coincides with early markers of heart failure. The exact regulation of this apoptotic process remains to be elucidated.
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Affiliation(s)
- Kerstin Schwarz
- Clinic for Internal Medicine/Cardiology, University of Technology, Dresden, Germany
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Zidar N, Dolenc-Strazar Z, Jeruc J, Stajer D. Immunohistochemical expression of activated caspase-3 in human myocardial infarction. Virchows Arch 2005; 448:75-9. [PMID: 16205944 DOI: 10.1007/s00428-005-0073-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2005] [Accepted: 08/19/2005] [Indexed: 10/25/2022]
Abstract
There is mounting evidence that apoptosis is important in the pathogenesis of myocardial infarction (MI). One of the key events in the process of apoptosis is activation of caspase-3. Much attention has been recently paid to caspase inhibition as a potential treatment for ischemic cardiac disease. To predict the long-term effect of such treatment, it is essential to understand the significance of caspase-3 in the evolution of MI. Our aim was therefore to analyze immunohistochemical expression of activated caspase-3 in MI. Our study included autopsy samples of infarcted heart tissue from 50 patients with MI. Immunohistochemistry was performed by a sensitive peroxidase-streptavidin method on formalin-fixed, paraffin-embedded tissue, using monoclonal antibodies against activated (cleaved) caspase-3. We found caspase-3-positive myocytes in 18 MI less than 24 h old and in 3 MI that were presumably 48 h old. Their density (number of labeled myocytes/mm(2)) was greater in patients who received reperfusion treatment (mean 0.160+/-0.373 vs 0.025+/-0.037, p=0.06). In MI older than 48 h, positive reaction was observed in neutrophil granulocytes in the interstitium and, in subacute MI, it was observed in mononuclear inflammatory cells, myofibroblasts, and vascular endothelial cells. Our results suggest that apoptosis of myocytes is an important mode of cell death in the early MI, being enhanced in patients who received reperfusion treatment. After 48 h, apoptosis is an important mechanism of the clearance of neutrophil granulocytes and other inflammatory cells and of scar formation. Treatment with caspase inhibitors therefore will not only affect myocyte loss but will also interfere with the clearance of neutrophils and with the transformation of granulation tissue into a scar.
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Affiliation(s)
- Nina Zidar
- Institute of Pathology, Medical Faculty, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia.
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