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Han Y, Li CF, Zhang PZ, Yang XQ, Min JX, Wu QH, Xie YY, Jin DZ, Wang ZT, Shao F, Quan HX. Protective effects of 5(S)-5-carboxystrictosidine on myocardial ischemia-reperfusion injury through activation of mitochondrial KATP channels. Eur J Pharmacol 2022; 920:174811. [PMID: 35182546 DOI: 10.1016/j.ejphar.2022.174811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 01/15/2022] [Accepted: 02/08/2022] [Indexed: 12/12/2022]
Abstract
5(S)-5-carboxystrictosidine (5-CS) is a compound found in Mappianthus iodoides Hand.-Mazz., root, a traditional Chinese medicine used for the treatment of coronary artery disease. In this study, we investigated whether 5-CS protects heart against I/R injury. Sprague-Dawley rats were treated with 5-CS intraperitoneally for 7 days before the experiment. Hearts were perfused for 20 min global ischemia and 180 min reperfusion. 5-CS significantly inhibited an increase in the post-ischemic left ventricular end-diastolic pressure (LVEDP) and improved the post-ischemic left ventricular developed pressure (LVDP), dP/dt maximum and dP/dt minimum rates of pressure change, and coronary flow as compared with sham group. Pretreatment with 5-hydroxydecanoic acid (5-HD), an inhibitor of mitochondrial KATP channel, for 10 min before ischemia attenuated the improvement of LVEDP, LVDP, dP/dt maximum and dP/dt minimum rates of pressure change, and coronary flow induced by 5-CS. 5-CS markedly decreased the infarct size and attenuated the increased lactate dehydrogenase (LDH) level in effluent during reperfusion. Pretreatment with 5-HD also blocked these protective effects of 5-CS. 5-CS increased Mn-SOD, catalase, and HO-1 levels decreased by I/R injury and pretreatment of 5-HD blocked the 5-CS effects. Increases in Bax, cleaved caspase-3 and cytochrome c levels, caspase-3 and caspase-9 activity, and decrease in Bcl-2 level by I/R injury were attenuated by 5-CS treatment and pretreatment of 5-HD blocked its effects. These results suggest that the protective effects of 5-CS against myocardial I/R injury may be partly related to activating antioxidant enzymes and suppressing apoptosis through opening mitochondrial KATP channels.
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Affiliation(s)
- Ying Han
- Key Laboratory of Psychology of TCM and Brain Science, Jiangxi Administration of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province, China
| | - Chuan Feng Li
- Department of Physiology, College of Chinese Medicine and Life Science, Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province, China
| | - Pu Zhao Zhang
- Key Laboratory of Innovation Drug and Efficient Energy-saving Pharmaceutical Equipment, Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province, China
| | - Xiao Qi Yang
- Department of Physiology, College of Chinese Medicine and Life Science, Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province, China
| | - Jian Xin Min
- Department of Physiology, College of Chinese Medicine and Life Science, Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province, China
| | - Qing Hua Wu
- Department of Physiology, College of Chinese Medicine and Life Science, Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province, China
| | - Yong Yan Xie
- Department of Physiology, College of Chinese Medicine and Life Science, Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province, China
| | - De Zhong Jin
- Department of Physiology, College of Chinese Medicine and Life Science, Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province, China
| | - Zeng Tao Wang
- College of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province, China
| | - Feng Shao
- Key Laboratory of Innovation Drug and Efficient Energy-saving Pharmaceutical Equipment, Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province, China
| | - He Xiu Quan
- Department of Physiology, College of Chinese Medicine and Life Science, Jiangxi University of Chinese Medicine, Nanchang City, Jiangxi province, China.
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Shirriff CS, Heikkila JJ. Characterization of cadmium chloride-induced BiP accumulation in Xenopus laevis A6 kidney epithelial cells. Comp Biochem Physiol C Toxicol Pharmacol 2017; 191:117-128. [PMID: 27746171 DOI: 10.1016/j.cbpc.2016.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 10/05/2016] [Accepted: 10/10/2016] [Indexed: 12/22/2022]
Abstract
Endoplasmic reticulum (ER) stress can result in the accumulation of unfolded/misfolded protein in the ER lumen, which can trigger the unfolded protein response (UPR) resulting in the activation of various genes including immunoglobulin-binding protein (BiP; also known as glucose-regulated protein 78 or HSPA5). BiP, an ER heat shock protein 70 (HSP70) family member, binds to unfolded protein, inhibits their aggregation and re-folds them in an ATP-dependent manner. While cadmium, an environmental contaminant, was shown to induce the accumulation of HSP70 in vertebrate cells, less information is available regarding the effect of this metal on BiP accumulation or function. In this study, cadmium chloride treatment of Xenopus laevis A6 kidney epithelial cells induced a dose- and time-dependent increase in BiP, HSP70 and heme oxygenase-1 (HO-1) accumulation. Exposure of cells to a relatively low cadmium concentration at a mild heat shock temperature of 30°C greatly enhanced BiP and HSP70 accumulation compared to cadmium at 22°C. Treatment of cells with the glutathione synthesis inhibitor, buthionine sulfoximine, enhanced cadmium-induced BiP and HSP70 accumulation. Immunocytochemistry revealed that cadmium-induced BiP accumulation occurred in a punctate pattern in the perinuclear region. In some cells treated with cadmium chloride or the proteasomal inhibitor, MG132, large BiP complexes were observed that co-localized with aggregated protein or aggresome-like structures. These BiP/aggresome-like structures were also observed in cells treated simultaneously with cadmium at 30°C or in the presence of buthionine sulfoximine. In amphibians, the association of BiP with unfolded protein and its possible role in aggresome function may be vital in the maintenance of cellular proteostasis.
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Affiliation(s)
- Cody S Shirriff
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - John J Heikkila
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
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Zhang M, Cai S, Ma J. Evaluation of cardio-protective effect of soybean oligosaccharides. Gene 2015; 555:329-34. [PMID: 25447924 DOI: 10.1016/j.gene.2014.11.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 10/25/2014] [Accepted: 11/11/2014] [Indexed: 11/30/2022]
Abstract
The aim of the present study was to investigate whether soybean oligosaccharides (SO) protects heart function against myocardium ischemia reperfusion (MIR) injury. Hearts were 20min global ischemia and 50min reperfusion. Rats were fed for 30days with saline (sham and MIR groups) or the SO (200 or 400mg/kg body weight, daily). At the end of 30days, the left main coronary artery was occluded for 30min, followed by 24h reperfusion, in anesthetized rats. Sham operated animals were subjected to the same surgical procedures, except that the suture under the left anterior descending coronary artery was not tied. Results showed that SO decreased malondialdehyde (MDA) level and increased antioxidant enzymes activities in the SO-treatment group. Pre-treated with SO it showed a significant recovery in cardiac contractile function, reduction in infarct size, and decrease in creatine kinase (CK), aspartate transaminase (AST) and lactate dehydrogenase (LDH) activities. Moreover, SO also significantly increased the expression of p-JAK2 and p-STAT3 proteins in rat heart. However, no significant change in JAK2 and STAT3 levels was observed. Activation of JAK2/STAT3 pathway showed a significant protective role in the SO-treatment group. Perhaps, the altered activation of the JAK2/STAT3 pathway in ischemic myocardium is one mechanism by which SO is cardioprotective.
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Affiliation(s)
- Meng Zhang
- Department of Cardiology, Affiliated hospital of Qingdao University, Qingdao, 266021, China; Department of Cardiology, Affiliated Hospital of Jining Medical University, Jining, China
| | - ShangLang Cai
- Department of Cardiology, Affiliated hospital of Qingdao University, Qingdao, 266021, China.
| | - JiangWei Ma
- Department of Cardiology, Fengxian Branch of Shanghai 6th People's Hospital, Shanghai 201400, China.
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Park BM, Gao S, Cha SA, Park BH, Kim SH. Cardioprotective effects of angiotensin III against ischemic injury via the AT2 receptor and KATP channels. Physiol Rep 2013; 1:e00151. [PMID: 24400153 PMCID: PMC3871466 DOI: 10.1002/phy2.151] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 09/23/2013] [Accepted: 10/17/2013] [Indexed: 12/30/2022] Open
Abstract
Angiotensin III (Ang III) has similar effects on blood pressure and aldosterone secretion as Ang II, but cardioprotective effects are also proposed. In this study, we investigated whether Ang III protects the heart against ischemia/reperfusion (I/R) injury. After sacrificing Sprague-Dawley rats, the hearts were perfused with Krebs–Henseleit buffer for a 20 min preischemic period with and without Ang III followed by 20-min global ischemia and 50-min reperfusion. Pretreatment with Ang III (1 μmol/L) improved an increased postischemic left ventricular end-diastolic pressure (LVEDP) and a decreased postischemic left ventricular developed pressure (LVDP) induced by reperfusion compared to untreated hearts. Ang III markedly decreased infarct size and lactate dehydrogenase levels in effluent during reperfusion. Ang III increased coronary flow and the concentrations of atrial natriuretic peptide in coronary effluent during reperfusion. Pretreatment with Ang II type 2 receptor (AT2R) antagonist or ATP-sensitive K+ channel (KATP) blocker for 15 min before ischemia attenuated the improvement of LVEDP, LVDP, and ±dP/dt induced by Ang III. Ang III treatment increased Mn-superoxide dismutase, catalase, and heme oxygenase-1 protein levels, which was attenuated by pretreatment with AT2R antagonist or KATP blocker. Ang III treatment also decreased Bax, caspase-3, and caspase-9 protein levels, and increased Bcl-2 protein level, which were attenuated by pretreatment with AT2R antagonist or KATP blocker. These results suggest that the cardioprotective effects of Ang III against I/R injury may be partly related to activating antioxidant and antiapoptotic enzymes via AT2R and KATP channels.
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Affiliation(s)
- Byung Mun Park
- Department of Physiology, Research Institute for Endocrine Sciences, Chonbuk National University Medical School Jeonju, Korea
| | - Shan Gao
- Department of Physiology, Research Institute for Endocrine Sciences, Chonbuk National University Medical School Jeonju, Korea
| | - Seung Ah Cha
- Department of Physiology, Research Institute for Endocrine Sciences, Chonbuk National University Medical School Jeonju, Korea
| | - Byung Hyun Park
- Department of Biochemistry, Research Institute for Endocrine Sciences, Chonbuk National University Medical School Jeonju, Korea
| | - Suhn Hee Kim
- Department of Physiology, Research Institute for Endocrine Sciences, Chonbuk National University Medical School Jeonju, Korea
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Gao S, Oh YB, Park BM, Park WH, Kim SH. Urotensin II protects ischemic reperfusion injury of hearts through ROS and antioxidant pathway. Peptides 2012; 36:199-205. [PMID: 22609449 DOI: 10.1016/j.peptides.2012.05.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2012] [Revised: 05/08/2012] [Accepted: 05/08/2012] [Indexed: 12/19/2022]
Abstract
Urotensin II (UII) is a vasoactive peptide which is bound to a G protein-coupled receptor. UII and its receptor are upregulated in ischemic and chronic hypoxic myocardium, but the effect of UII on ischemic reperfusion (I/R) injury is still controversial. The aim of the present study was to investigate whether UII protects heart function against I/R injury. Global ischemia was performed using isolated perfused Langendorff hearts of Sprague-Dawley rats. Hearts were perfused with Krebs-Henseleit buffer for 20min pre-ischemic period followed by a 20min global ischemia and 50min reperfusion. Pretreatment with UII (10nM) for 10min increased recovery percentage of the post-ischemic left ventricular developed pressure and ±dp/dt, and decreased post-ischemic left ventricular end-diastolic pressure as compared with I/R group. UII decreased infarct size and an increased lactate dehydrogenase level during reperfusion. Cardioprotective effects of UII were attenuated by pretreatment with UII receptor antagonist. The hydrogen peroxide activity was increased in UII-treated heart before ischemia. The Mn-SOD, catalase, heme oxygenase-1 and Bcl-2 levels were increased, and the Bax and caspase-9 levels were decreased in UII-treated hearts. These results suggest that UII has cardioprotective effects against I/R injury partly through activating antioxidant enzymes and reactive oxygen species.
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Affiliation(s)
- Shan Gao
- Department of Physiology, Research Center for Endocrine Sciences, Chonbuk National University Medical School, Jeonju, Republic of Korea
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Kim JA, Jung YS, Kim MY, Yang SY, Lee S, Kim YH. Protective effect of components isolated from Lindera erythrocarpa against oxidative stress-induced apoptosis of H9c2 cardiomyocytes. Phytother Res 2011; 25:1612-7. [PMID: 21412863 DOI: 10.1002/ptr.3465] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 01/27/2011] [Accepted: 02/08/2011] [Indexed: 11/08/2022]
Abstract
Eight compounds were isolated from the methanol fraction of Lindera erythrocarpa and assessed for their ability to protect H9c2 cardiomyocytes against oxidative stress-induced cell death. Three of the compounds significantly reduced the release of lactate dehydrogenase from H9c2 cardiomyocytes treated with buthionine-[S,R]-sulfoximine and reduced the uptake of propidium iodide by these cells. These effects were concentration-dependent. The three inhibitory compounds were identified as (-)-epicatechin, avicularin and quercitrin by spectroscopic techniques including one- and two-dimensional NMR and mass spectroscopy.
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Affiliation(s)
- Jeong Ah Kim
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea
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Piao CS, Gao S, Lee GH, Kim DS, Park BH, Chae SW, Chae HJ, Kim SH. Sulforaphane protects ischemic injury of hearts through antioxidant pathway and mitochondrial KATP channels. Pharmacol Res 2010; 61:342-8. [DOI: 10.1016/j.phrs.2009.11.009] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2009] [Revised: 11/17/2009] [Accepted: 11/17/2009] [Indexed: 10/20/2022]
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Pattanayak P, Pratihar JL, Patra D, Mitra S, Bhattacharyya A, Man Lee H, Chattopadhyay S. Synthesis, structure and reactivity of azosalophen complexes of vanadium(IV): studies on cytotoxic properties. Dalton Trans 2009:6220-30. [DOI: 10.1039/b903352a] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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