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Bai S, Wang X, Wu H, Chen T, Li X, Zhang L, Li X, Er L, Du R. Cardioprotective effect of anisodamine against ischemia/reperfusion injury through the mitochondrial ATP-sensitive potassium channel. Eur J Pharmacol 2021; 901:174095. [PMID: 33862063 DOI: 10.1016/j.ejphar.2021.174095] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 03/31/2021] [Accepted: 04/06/2021] [Indexed: 11/15/2022]
Abstract
Previous clinical studies have shown that anisodamine could improve no-reflow phenomenon and prevent reperfusion arrhythmias, but whether this protective effect is related to the antagonism of the M-type cholinergic receptor or other potential mechanisms is uncertain. The aim of the present study was to investigate the role of the mitochondrial ATP-sensitive potassium channel (mitoK ATP ) in cardioprotective effect of anisodamine against ischemia/reperfusion injury. Anisodamine and 5- hydroxydecanoic acid were used to explore the relationship between anisodamine and mitoK ATP . Using a Langendorff isolated heart ischemia/reperfusion injury model, hemodynamic parameters and reperfusion ventricular arrhythmia were evaluated; in addition, changes in myocardial infarct size, cTnI from coronary effluent and myocardial ultrastructure, as well as ATP, MDA and SOD in myocardial tissues, were detected. In the hypoxia/reoxygenation injury model of neonatal rat cardiomyocyte, cTnI release in the culture medium and levels of ATP, MDA and SOD in cardiomyocytes and mitochondrial membrane potential, were analyzed. Overall, anisodamine could significantly improve the hemodynamic indexes of isolated rat heart injured by ischemia/reperfusion, reduce the occurrence of ventricular reperfusion arrhythmia and myocardial infarction area, and improve the ultrastructural damage of myocardium and mitochondria. The in vitro results demonstrated that anisodamine could improve mitochondrial energy metabolism, reduce oxidative stress and stabilize mitochondrial membrane potential. The cardioprotective effects were significantly inhibited by 5-hydroxydecanoic acid. In conclusion, this study suggests that the opening of mitoK ATP could play an important role in the protective effect of anisodamine against myocardial ischemia/reperfusion injury.
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Affiliation(s)
- Shiru Bai
- Department of Cardiology, Hebei General Hospital, Shijiazhuang, Hebei, 050000, China
| | - Xuechao Wang
- Department of Cardiology, Hebei General Hospital, Shijiazhuang, Hebei, 050000, China
| | - Haibo Wu
- Department of Cardiology, Hebei General Hospital, Shijiazhuang, Hebei, 050000, China
| | - Tianlei Chen
- Department of Cardiology, Hebei General Hospital, Shijiazhuang, Hebei, 050000, China
| | - Xinning Li
- Department of Cardiology, Hebei General Hospital, Shijiazhuang, Hebei, 050000, China
| | - Lina Zhang
- Department of Cardiology, Hebei General Hospital, Shijiazhuang, Hebei, 050000, China
| | - Xiangming Li
- Department of Cardiology, Hebei General Hospital, Shijiazhuang, Hebei, 050000, China
| | - Lu Er
- Department of Cardiology, Hebei General Hospital, Shijiazhuang, Hebei, 050000, China
| | - Rongpin Du
- Department of Cardiology, Hebei General Hospital, Shijiazhuang, Hebei, 050000, China.
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Papanicolaou KN, Ashok D, Liu T, Bauer TM, Sun J, Li Z, da Costa E, D'Orleans CC, Nathan S, Lefer DJ, Murphy E, Paolocci N, Foster DB, O'Rourke B. Global knockout of ROMK potassium channel worsens cardiac ischemia-reperfusion injury but cardiomyocyte-specific knockout does not: Implications for the identity of mitoKATP. J Mol Cell Cardiol 2020; 139:176-189. [PMID: 32004507 PMCID: PMC7849919 DOI: 10.1016/j.yjmcc.2020.01.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 01/16/2020] [Accepted: 01/23/2020] [Indexed: 01/29/2023]
Abstract
The renal-outer-medullary‑potassium (ROMK) channel, mutated in Bartter's syndrome, regulates ion exchange in kidney, but its extra-renal functions remain unknown. Additionally, ROMK was postulated to be the pore-forming subunit of the mitochondrial ATP-sensitive K+ channel (mitoKATP), a mediator of cardioprotection. Using global and cardiomyocyte-specific knockout mice (ROMK-GKO and ROMK-CKO respectively), we characterize the effects of ROMK knockout on mitochondrial ion handling, the response to pharmacological KATP channel modulators, and ischemia/reperfusion (I/R) injury. Mitochondria from ROMK-GKO hearts exhibited a lower threshold for Ca2+-triggered permeability transition pore (mPTP) opening but normal matrix volume changes during oxidative phosphorylation. Isolated perfused ROMK-GKO hearts exhibited impaired functional recovery and increased infarct size when I/R was preceded by an ischemic preconditioning (IPC) protocol. Because ROMK-GKO mice exhibited severe renal defects and cardiac remodeling, we further characterized ROMK-CKO hearts to avoid confounding systemic effects. Mitochondria from ROMK-CKO hearts had unchanged matrix volume responses during oxidative phosphorylation and still swelled upon addition of a mitoKATP opener, but exhibited a lower threshold for mPTP opening, similar to GKO mitochondria. Nevertheless, I/R induced damage was not exacerbated in ROMK-CKO hearts, either ex vivo or in vivo. Lastly, we examined the response of ROMK-CKO hearts to ex vivo I/R injury with or without IPC and found that IPC still protected these hearts, suggesting that cardiomyocyte ROMK does not participate significantly in the cardioprotective pathway elicited by IPC. Collectively, our findings from these novel strains of mice suggest that cardiomyocyte ROMK is not a central mediator of mitoKATP function, although it can affect mPTP activation threshold.
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Affiliation(s)
- Kyriakos N Papanicolaou
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Deepthi Ashok
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Ting Liu
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Tyler M Bauer
- Cardiovascular Branch, NHLBI, NIH, 10 Center Drive, Bethesda, MD, USA
| | - Junhui Sun
- Cardiovascular Branch, NHLBI, NIH, 10 Center Drive, Bethesda, MD, USA
| | - Zhen Li
- Cardiovascular Center of Excellence, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA; Department of Pharmacology and Experimental Therapeutics, LSU Health Sciences Center, New Orleans, LA, USA
| | - Eduardo da Costa
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Charles Crepy D'Orleans
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Sara Nathan
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - David J Lefer
- Cardiovascular Center of Excellence, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA; Department of Pharmacology and Experimental Therapeutics, LSU Health Sciences Center, New Orleans, LA, USA
| | - Elizabeth Murphy
- Cardiovascular Branch, NHLBI, NIH, 10 Center Drive, Bethesda, MD, USA
| | - Nazareno Paolocci
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - D Brian Foster
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Brian O'Rourke
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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Yuan F, Fu H, Sun K, Wu S, Dong T. Effect of dexmedetomidine on cerebral ischemia-reperfusion rats by activating mitochondrial ATP-sensitive potassium channel. Metab Brain Dis 2017; 32:539-546. [PMID: 28035625 DOI: 10.1007/s11011-016-9945-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 12/26/2016] [Indexed: 12/24/2022]
Abstract
The aim of the study reported here was to evaluate whether the mitochondrial ATP-sensitive potassium (mitoKATP) channel could participate in the effect of dexmedetomidine on cerebral ischemia-reperfusion (I/R) rats. Forty rats were randomly assigned into 5 groups: sham operation (S) group; cerebral I/R group; dexmedetomidine (D) group; 5-hydroxydecanoate (5-HD) group; 5-HD + D group. The cerebral I/R were produced by 2 h right middle cerebral artery occlusion followed by 24 h reperfusion. Dexmedetomidine (50μg/kg) was injected intraperitoneally before ischemia and after the onset of reperfusion. 5-HD (30 mg/kg) was injected intraperitoneally at 1 h before ischemia. The neurological deficit score (NDS) and the levels of super oxide dismutase (SOD), malondialdehyde (MDA), myeloperoxidase (MPO), Interleukin 6 (IL-6) and tumor necrosis factor-α (TNF-α) were evaluated. Compared to group S, NDS and the levels of MDA, MPO, IL-6 and TNF-α were significantly higher, and SOD levels were significantly lower in the other groups (P < 0.05). Compared to group I/R,NDS and the levels of MDA, MPO, IL-6 and TNF-α were significantly lower, and SOD level was significantly higher in group D (P < 0.05). Compared to group D, NDS and the levels of MDA, MPO, IL-6 and TNF-α were significantly higher, and SOD level was significantly lower in group5-HD + D (P < 0.05). The activation of the mitoKATP channel could contribute to the protective effect of dexmedetomidine on rats induced by focal cerebral ischemia-reperfusion injury.
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Affiliation(s)
- Feng Yuan
- Department of Anesthesiology, The Second Affiliated Hospital of Zhengzhou University, No. 2 of Jingba road of Jinshui District, Zhengzhou, 450014, China
| | - Hongguang Fu
- Department of Anesthesiology, The Second Affiliated Hospital of Zhengzhou University, No. 2 of Jingba road of Jinshui District, Zhengzhou, 450014, China
| | - Kai Sun
- Department of Anesthesiology, The Second Affiliated Hospital of Zhengzhou University, No. 2 of Jingba road of Jinshui District, Zhengzhou, 450014, China
| | - Shubiao Wu
- Department of Anesthesiology, The Second Affiliated Hospital of Zhengzhou University, No. 2 of Jingba road of Jinshui District, Zhengzhou, 450014, China
| | - Tieli Dong
- Department of Anesthesiology, The Second Affiliated Hospital of Zhengzhou University, No. 2 of Jingba road of Jinshui District, Zhengzhou, 450014, China.
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Yang SS, Zheng MX, Xu HC, Cui XZ, Zhang Y, Zhao WL, Bai R. The effect of mitochondrial ATP-sensitive potassium channels on apoptosis of chick embryo cecal cells by Eimeria tenella. Res Vet Sci 2015; 99:188-95. [PMID: 25744434 DOI: 10.1016/j.rvsc.2015.02.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 01/17/2015] [Accepted: 02/06/2015] [Indexed: 11/30/2022]
Abstract
The objective of this study was to investigate the effect of mitochondrial ATP-sensitive potassium (mitoKATP) channels on apoptosis induced by Eimeria tenella. At 24, 48, 72, 96 and 120 h after Eimeria tenella infection, TUNEL assays and translation of phosphatidyl serines to the host cell plasma membrane surface showed that diazoxide-treated chick embryo cecal cells underwent less apoptosis (P <0.05), while light microscopy showed that infection rates of treated cells were higher (P <0.01) than untreated cells. Caspase 9 and caspase 3 of infected cells were activated less (P <0.01) in diazoxide-treated cells than untreated cells. These results indicate that opening mitoKATP channels can protect chick embryo cecal cells from mitochondria-dependent apoptosis induced by Eimeria tenella by inhibiting activations of caspase 9 and caspase 3.
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Affiliation(s)
- Sha-sha Yang
- College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China
| | - Ming-xue Zheng
- College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China.
| | - Huan-cheng Xu
- College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China
| | - Xiao-zhen Cui
- College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China
| | - Yan Zhang
- College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China
| | - Wen-long Zhao
- College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China
| | - Rui Bai
- College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China
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Nogueira MA, Coelho AMM, Sampietre SN, Patzina RA, Pinheiro da Silva F, D'Albuquerque LAC, Machado MCC. Beneficial effects of adenosine triphosphate-sensitive K + channel opener on liver ischemia/reperfusion injury. World J Gastroenterol 2014; 20:15319-15326. [PMID: 25386080 PMCID: PMC4223265 DOI: 10.3748/wjg.v20.i41.15319] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 05/28/2014] [Accepted: 07/11/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of diazoxide administration on liver ischemia/reperfusion injury.
METHODS: Wistar male rats underwent partial liver ischemia performed by clamping the pedicle from the medium and left anterior lateral segments for 1 h under mechanical ventilation. They were divided into 3 groups: Control Group, rats submitted to liver manipulation, Saline Group, rats received saline, and Diazoxide Group, rats received intravenous injection diazoxide (3.5 mg/kg) 15 min before liver reperfusion. 4 h and 24 h after reperfusion, blood was collected for determination of aspartate transaminase (AST), alanine transaminase (ALT), tumor necrosis factor (TNF-α), interleukin-6 (IL-6), interleukin-10 (IL-10), nitrite/nitrate, creatinine and tumor growth factor-β1 (TGF-β1). Liver tissues were assembled for mitochondrial oxidation and phosphorylation, malondialdehyde (MDA) content, and histologic analysis. Pulmonary vascular permeability and myeloperoxidase (MPO) were also determined.
RESULTS: Four hours after reperfusion the diazoxide group presented with significant reduction of AST (2009 ± 257 U/L vs 3523 ± 424 U/L, P = 0.005); ALT (1794 ± 295 U/L vs 3316 ± 413 U/L, P = 0.005); TNF-α (17 ± 9 pg/mL vs 152 ± 43 pg/mL, P = 0.013; IL-6 (62 ± 18 pg/mL vs 281 ± 92 pg/mL); IL-10 (40 ± 9 pg/mL vs 78 ± 10 pg/mL P = 0.03), and nitrite/nitrate (3.8 ± 0.9 μmol/L vs 10.2 ± 2.4 μmol/L, P = 0.025) when compared to the saline group. A significant reduction in liver mitochondrial dysfunction was observed in the diazoxide group compared to the saline group (P < 0.05). No differences in liver MDA content, serum creatinine, pulmonary vascular permeability and MPO activity were observed between groups. Twenty four hours after reperfusion the diazoxide group showed a reduction of AST (495 ± 78 U/L vs 978 ± 192 U/L, P = 0.032); ALT (335 ± 59 U/L vs 742 ± 182 U/L, P = 0.048), and TGF-β1 (11 ± 1 ng/mL vs 17 ± 0.5 ng/mL, P = 0.004) serum levels when compared to the saline group. The control group did not present alterations when compared to the diazoxide and saline groups.
CONCLUSION: Diazoxide maintains liver mitochondrial function, increases liver tolerance to ischemia/reperfusion injury, and reduces the systemic inflammatory response. These effects require further evaluation for using in a clinical setting.
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