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Xiang C, Yu S, Ren Q, Jiang B, Li J, Zhang D, Wei Y. Metabolomics analysis in rat hearts with ischemia/reperfusion injury after diazoxide postconditioning. Front Mol Biosci 2023; 10:1196894. [PMID: 37304068 PMCID: PMC10248136 DOI: 10.3389/fmolb.2023.1196894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/15/2023] [Indexed: 06/13/2023] Open
Abstract
Background: Diazoxide is a selective mitochondrial-sensitive potassium channel opening agent that has a definite effect on reducing myocardial ischemia/reperfusion injury (MIRI). However, the exact effects of diazoxide postconditioning on the myocardial metabolome remain unclear, which might contribute to the cardioprotective effects of diazoxide postconditioning. Methods: Rat hearts subjected to Langendorff perfusion were randomly assigned to the normal (Nor) group, ischemia/reperfusion (I/R) group, diazoxide (DZ) group and 5-hydroxydecanoic acid + diazoxide (5-HD + DZ) group. The heart rate (HR), left ventricular developed pressure (LVDP), left ventricular end-diastolic pressure (LVEDP), and maximum left ventricular pressure (+dp/dtmax) were recorded. The mitochondrial Flameng scores were analysed according to the ultrastructure of the ventricular myocardial tissue in the electron microscopy images. Rat hearts of each group were used to investigate the possible metabolic changes relevant to MIRI and diazoxide postconditioning. Results: The cardiac function indices in the Nor group were better than those in the other groups at the end point of reperfusion, and the HR, LVDP and +dp/dtmax of the Nor group at T2 were significantly higher than those of the other groups. Diazoxide postconditioning significantly improved cardiac function after ischaemic injury, and the HR, LVDP and +dp/dtmax of the DZ group at T2 were significantly higher than those of the I/R group, which could be abolished by 5-HD. The HR, LVDP and +dp/dtmax of the 5-HD + DZ group at T2 were significantly lower than those of the DZ group. The myocardial tissue in the Nor group was mostly intact, while it exhibited considerable damage in the I/R group. The ultrastructural integrity of the myocardium in the DZ group was higher than that in the I/R and 5-HD + DZ groups. The mitochondrial Flameng score in the Nor group was lower than that in the I/R, DZ and 5-HD + DZ groups. The mitochondrial Flameng score in the DZ group was lower than that in the I/R and 5-HD + DZ groups. Five metabolites, namely, L-glutamic acid, L-threonine, citric acid, succinate, and nicotinic acid, were suggested to be associated with the protective effects of diazoxide postconditioning on MIRI. Conclusion: Diazoxide postconditioning may improve MIRI via certain metabolic changes. This study provides resource data for future studies on metabolism relevant to diazoxide postconditioning and MIRI.
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Affiliation(s)
- Cen Xiang
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Anesthesiology, Zhuhai Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Shoujia Yu
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Qiyang Ren
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Boyi Jiang
- Department of Anesthesiology, Zhuhai Hospital of Integrated Traditional Chinese and Western Medicine, Zhuhai, China
| | - Jing Li
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Donghang Zhang
- Department of Anesthesiology, West China Hospital of Sichuan University, Chengdu, China
| | - Yiyong Wei
- Department of Anesthesiology, Longgang District Matemity and Child Healthcare Hospital of Shenzhen City (Longgang Matemity and Child Institute of Shantou University Medical College), Shenzhen, China
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Mitochondrial proteomics alterations in rat hearts following ischemia/reperfusion and diazoxide post‑conditioning. Mol Med Rep 2020; 23:161. [PMID: 33355377 PMCID: PMC7789131 DOI: 10.3892/mmr.2020.11800] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 08/07/2020] [Indexed: 02/07/2023] Open
Abstract
Diazoxide post-conditioning (D-Post) has been shown to be effective in alleviating myocardial ischemia/reperfusion (I/R) injury; however, the specific mechanisms are not fully understood. In the present study, isolated rat hearts were subjected to I/R injury and D-Post. The mitochondria were extracted, and mitochondrial protein expression was detected in normal, I/R and D-Post hearts using two-dimensional electrophoresis and matrix-assisted laser desorption ionization-time of flight mass spectrometry. Differentially expressed proteins were then identified using comparative proteomics. In total, five differentially expressed proteins were identified between the I/R and D-Post hearts. Compared with the I/R hearts, the expression of NADH dehydrogenase (ubiquinone) flavoprotein 1 (NDUFV1), NADH-ubiquinone oxidoreductase 75 kDa subunit (NDUFS1), 2-oxoglutarate dehydrogenase (OGDH) and ATP synthase α subunit (isoform CRA_b, gi|149029482) was increased in D-Post hearts. In addition, the expression of another isoform of ATP synthase α subunit (isoform CRA_c, gi|149029480) was decreased in the D-Post group compared with the I/R group. The expression profiles of NDUFV1, NDUFS1 and OGDH in the two groups were further validated via western blotting. The five differentially expressed proteins may be protective effectors in D-Post, as well as potential targets for the treatment of cardiac I/R injury.
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Cao S, Zhang D, Yuan J, Liu C, Zhou W, Zhang L, Yu S, Qin B, Li Y, Deng W. MicroRNA And Circular RNA Expression In Affected Skin Of Patients With Postherpetic Neuralgia. J Pain Res 2019; 12:2905-2913. [PMID: 31695480 PMCID: PMC6802488 DOI: 10.2147/jpr.s221615] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 09/30/2019] [Indexed: 12/23/2022] Open
Abstract
Mechanisms of postherpetic neuralgia (PHN) are still not clear. Transcripts such as microRNA (miRNA) and circular RNA (circRNA) in the affected skin may take part in the initiation and development of this neuropathic pain; however, their expression profiles in skins of PHN patients have not been reported. The PHN affected skin and the mirror skin were collected and subjected to miRNA and circRNA microarray, and expression profiles were comparatively analyzed. There were 317 differently expressed miRNAs in PHN affected skin compared with mirror skin (fold change ≥2.0), and 13 of them showed fold change >10 in the PHN skin. Only one circRNA, hsa_circRNA_405463 showed fold change >2 in PHN skin, however, 31 circRNAs with fold change ≥1.5. To evaluate functions of differential miRNAs, their target mRNAs were predicted and bioinformatics analyses including gene ontology, Kyoto Encyclopedia of Genes and Genomes pathway were conducted. Target mRNAs significantly (P<0.05) enriched in 85 pathways, such as FoxO, AMPK, MAPK and pathway. These data reported for the first time that miRNA and circRNA differentially expressed in the PHN skin and these transcripts with abnormal expression could be potential targets to treat PHN.
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Affiliation(s)
- Song Cao
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, People's Republic of China.,Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi 563003, People's Republic of China
| | - Dexin Zhang
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, People's Republic of China
| | - Jie Yuan
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, People's Republic of China.,Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi 563003, People's Republic of China
| | - Chengxi Liu
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi 563003, People's Republic of China
| | - Wenjing Zhou
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi 563003, People's Republic of China
| | - Lin Zhang
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi 563003, People's Republic of China
| | - Shouyang Yu
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi 563003, People's Republic of China
| | - Bangyong Qin
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, People's Republic of China
| | - Ying Li
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, People's Republic of China
| | - Wenwen Deng
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, People's Republic of China
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Yu DL, Li HW, Wang Y, Li CQ, You D, Jiang L, Song YP, Li XH. Acyl-CoA dehydrogenase long chain expression is associated with esophageal squamous cell carcinoma progression and poor prognosis. Onco Targets Ther 2018; 11:7643-7653. [PMID: 30464513 PMCID: PMC6217208 DOI: 10.2147/ott.s171963] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Background Acyl-CoA dehydrogenase long chain (ACADL) was revealed to have a correlation with malignant progression of cancer. However, whether ACADL plays a role in clinical therapy remains unclear. The clinicopathological role of ACADL in esophageal squamous cell carcinoma (ESCC) will be discussed in this study. Materials and methods The expression of ACADL was analyzed via real-time PCR and Western blotting to assess mRNA and protein levels in ESCC cell lines and normal esophageal epithelial cells (NEECs), in six paired ESCC tumors and relative normal tissues. Furthermore, immunohistochemical staining was performed on 135 paraffin-embedded ESCC specimens to assess ACADL expression. The clinicopathological significance of ACADL expression was further investigated via survival analysis and Cox regression analysis. Results ACADL was found to be markedly upregulated in ESCC cell lines when compared with NEECs. Moreover, various experiments such as quantitative real-time PCR, Western blot, and immunohistochemical analyses all revealed that ACADL expression was increased in all six paired ESCC tumors and matched normal tissues. Furthermore, immunohistochemical analysis revealed an increased level of ACADL protein expression in all 135 paraffin-embedded samples from ESCC patients, which increased with disease progression. Conclusion We demonstrated that ACADL is overexpressed in ESCC, both in cell lines and clinical specimens. ACADL is found to be a vital regulator in ESCC progression and can predict a worse outcome for ESCC patients, suggesting that ACADL might be a valuable molecule to be targeted for clinical therapy of ESCC treatment.
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Affiliation(s)
- Dong-Lin Yu
- Department of basic Theory of traditional Chinese Medicine, Binzhou Medical University, Yantai, People's Republic of China
| | - Hong-Wei Li
- Department of Radiotherapy, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, People's Republic of China, ;
| | - Yang Wang
- Department of Radiotherapy, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, People's Republic of China, ;
| | - Cun-Qi Li
- Department of Radiotherapy, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, People's Republic of China, ;
| | - Dong You
- Department of Radiotherapy, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, People's Republic of China, ;
| | - Lei Jiang
- Department of Pathology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, People's Republic of China
| | - Yi-Peng Song
- Department of Radiotherapy, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, People's Republic of China, ;
| | - Xing-Hua Li
- Department of Radiotherapy, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, People's Republic of China, ;
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Shi B, Deng W, Long X, Zhao R, Wang Y, Chen W, Xu G, Sheng J, Wang D, Cao S. miR-21 increases c-kit + cardiac stem cell proliferation in vitro through PTEN/PI3K/Akt signaling. PeerJ 2017; 5:e2859. [PMID: 28168101 PMCID: PMC5289448 DOI: 10.7717/peerj.2859] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 12/03/2016] [Indexed: 01/04/2023] Open
Abstract
The low survival rate of cardiac stem cells (CSCs) in the ischemic myocardium is one of the obstacles in ischemic cardiomyopathy cell therapy. The MicroRNA (miR)-21 and one of its target protein, the tensin homolog deleted on chromosome ten (PTEN), contributes to the proliferation of many kinds of tissues and cell types. It is reported that miR-21 promotes proliferation through PTEN/PI3K/Akt pathway, but its effects on c-kit+ CSC remain unclear. The authors hypothesized that miR-21 promotes the proliferation in c-kit + CSC, and evaluated the involvement of PTEN/PI3K/Akt pathway in vitro. miR-21 up-regulation with miR-21 efficiently mimics accelerated cell viability and proliferation in c-kit + CSC, which was evidenced by the CCK-8, EdU and cell cycle analyses. In addition, the over-expression of miR-21 in c-kit + CSCs notably down-regulated the protein expression of PTEN although the mRNA level of PTEN showed little change. Gain-of-function of miR-21 also increased the phosphor-Akt (p-Akt) level. Phen, the selective inhibitor of PTEN, reproduced the pro-proliferation effects of miR-21, while PI3K inhibitor, LY294002, totally attenuated the pro-survival effect of miR-21. These results indicate that miR-21 is efficient in promoting proliferation in c-kit+ CSCs, which is contributed by the PTEN/PI3K/Akt pathway. miR-21 holds the potential to facilitate CSC therapy in ischemic myocardium.
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Affiliation(s)
- Bei Shi
- Department of Cardiology, Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, China
| | - Wenwen Deng
- Department of Cardiology, Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, China
| | - Xianping Long
- Department of Cardiology, Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, China
| | - Ranzun Zhao
- Department of Cardiology, Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, China
| | - Yan Wang
- Department of Cardiology, Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, China
| | - Wenming Chen
- Department of Cardiology, Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, China
| | - Guanxue Xu
- Department of Cardiology, Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, China
| | - Jin Sheng
- Department of Cardiology, Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, China
| | - Dongmei Wang
- Department of Cardiology, Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, China
| | - Song Cao
- Department of Anesthesiology, Zunyi Medical College, Zunyi, Guizhou, China.,Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical College, Zunyi, Guizhou, China
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Zhang L, Cao S, Deng S, Yao G, Yu T. Ischemic postconditioning and pinacidil suppress calcium overload in anoxia-reoxygenation cardiomyocytes via down-regulation of the calcium-sensing receptor. PeerJ 2016; 4:e2612. [PMID: 27833799 PMCID: PMC5101590 DOI: 10.7717/peerj.2612] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 09/26/2016] [Indexed: 01/23/2023] Open
Abstract
Ischemic postconditioning (IPC) and ATP sensitive potassium channel (KATP) agonists (e.g. pinacidil and diazoxide) postconditioning are effective methods to defeat myocardial ischemia-reperfusion (I/R) injury, but their specific mechanisms of reducing I/R injury are not fully understood. We observed an intracellular free calcium ([Ca2+]i) overload in Anoxia/reoxygenation (A/R) cardiomyocytes, which can be reversed by KATP agonists diazoxide or pinacidil. The calcium-sensing receptor (CaSR) regulates intracellular calcium homeostasis. CaSR was reported to be involved in the I/R-induced apoptosis in rat cardiomyocytes. We therefore hypothesize that IPC and pinacidil postconditioning (PPC) reduce calcium overload in I/R cardiomyocytes by the down-regulation of CaSR. A/R model was established with adult rat caridomyocyte. mRNA and protein expression of CaSR were detected, IPC, PPC and KATP’s effects on [Ca2+]i concentration was assayed too. IPC and PPC ameliorated A/R insult induced [Ca2+]i overload in cardiomyocytes. In addition, they down-regulated the mRNA and protein level of CaSR as we expected. CaSR agonist spermine and KATP blocker glibenclamide offset IPC’s effects on CaSR expression and [Ca2+]i modulation. Our data indicate that CaSR down-regulation contributes to the mitigation of calcium overload in A/R cardiomyocytes, which may partially represents IPC and KATP’s myocardial protective mechanism under I/R circumstances.
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Affiliation(s)
- Lin Zhang
- Department of Anesthesiology, Zunyi Medical College, Zunyi, Guizhou, China.,Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical College, Zunyi, Guizhou, China
| | - Song Cao
- Department of Anesthesiology, Zunyi Medical College, Zunyi, Guizhou, China.,Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical College, Zunyi, Guizhou, China
| | - Shengli Deng
- Department of Anesthesiology, Zunyi Medical College, Zunyi, Guizhou, China.,Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical College, Zunyi, Guizhou, China
| | - Gang Yao
- Department of Anesthesiology, Zunyi Medical College, Zunyi, Guizhou, China.,Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical College, Zunyi, Guizhou, China
| | - Tian Yu
- Department of Anesthesiology, Zunyi Medical College, Zunyi, Guizhou, China.,Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical College, Zunyi, Guizhou, China
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miR-21 Reduces Hydrogen Peroxide-Induced Apoptosis in c-kit + Cardiac Stem Cells In Vitro through PTEN/PI3K/Akt Signaling. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:5389181. [PMID: 27803763 PMCID: PMC5075640 DOI: 10.1155/2016/5389181] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 07/06/2016] [Accepted: 07/19/2016] [Indexed: 12/18/2022]
Abstract
The low survival rate of cardiac stem cells (CSCs) in the infarcted myocardium hampers cell therapy for ischemic cardiomyopathy. MicroRNA-21 (miR-21) and one of its target proteins, PTEN, contribute to the survival and proliferation of many cell types, but their prosurvival effects in c-kit+ CSC remain unclear. Thus, we hypothesized that miR-21 reduces hydrogen peroxide- (H2O2-) induced apoptosis in c-kit+ CSC and estimated the contribution of PTEN/PI3K/Akt signaling to this oxidative circumstance. miR-21 mimics efficiently reduced H2O2-induced apoptosis in c-kit+ CSC, as evidenced by the downregulation of the proapoptosis proteins caspase-3 and Bax and upregulation of the antiapoptotic Bcl-2. In addition, the gain of function of miR-21 in c-kit+ CSC downregulated the protein level of PTEN although its mRNA level changed slightly; in the meantime, miR-21 overexpression also increased phospho-Akt (p-Akt). The antiapoptotic effects of miR-21 were comparable with Phen (bpV), the selective inhibitor of PTEN, while miR-21 inhibitor or PI3K's inhibitor LY294002 efficiently attenuated the antiapoptotic effect of miR-21. Taken together, these results indicate that the anti-H2O2-induced apoptosis effect of miR-21 in c-kit+ CSC is contributed by PTEN/PI3K/Akt signaling. miR-21 could be a potential molecule to facilitate the c-kit+ CSC therapy in ischemic myocardium.
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Pinacidil-postconditioning is equivalent to ischemic postconditioning in defeating cardiac ischemia-reperfusion injury in rat. Eur J Pharmacol 2016; 780:26-32. [DOI: 10.1016/j.ejphar.2016.03.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/11/2016] [Accepted: 03/15/2016] [Indexed: 11/21/2022]
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Zhang Y, Pan S, Zheng X, Wan Q. Cytomembrane ATP-sensitive K + channels in neurovascular unit targets of ischemic stroke in the recovery period. Exp Ther Med 2016; 12:1055-1059. [PMID: 27446320 PMCID: PMC4950624 DOI: 10.3892/etm.2016.3373] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 05/20/2016] [Indexed: 12/14/2022] Open
Abstract
The present study was to analyze the mechanism of cytomembrane ATP-sensitive K+ channels (KATP) in the neurovascular unit treatment of ischemic stroke in the recovery period. A total of 24 healthy adult male Wistar rats of 5–8 weeks age, weighing 160–200 g were randomly divided into the control (sham-operation group), model, KATP blocker and KATP opener groups (n=6 rats per group). Nylon cerebral artery occlusion was conducted using nylon monofilament coated with Poly-L-lysine, which was used to produce a cerebral infarction model. After feeding normally for 3 days, 5-hydroxydecanoate (40 mg/Kg), and diazoxide (40 mg/Kg) were injected to the abdominal cavity in the blocker, and opener groups, respectively. The control received an equivalent normal saline that was injected into the sham-operation and model groups. The animals were mutilated and samples were collected after 3 days. RT-PCR was used to detect the expression levels of the three subunits of KATP, i.e., kir6.1, and sulfonylurea receptor (SUR) 1 and SUR2 mRNA, as well as to calculate infarct size in tetrazolium chloride staining. The expression level of mRNA in the opener group were significantly higher, followed by the model and blocker groups, with the control group being the lowest (P<0.05). Infarct size in the opener group was markedly smaller than the model and blocker groups, and infarct size in the blocker group was significantly larger (P<0.05). Thus, the target treatment on KATP may improve the prognosis of ischemic stroke during the recovery period.
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Affiliation(s)
- Yang Zhang
- Department of Neurology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Sipei Pan
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Xiaolu Zheng
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Qi Wan
- Department of Neurology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
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Cao S, Liu Y, Wang H, Mao X, Chen J, Liu J, Xia Z, Zhang L, Liu X, Yu T. Ischemic postconditioning influences electron transport chain protein turnover in Langendorff-perfused rat hearts. PeerJ 2016; 4:e1706. [PMID: 26925330 PMCID: PMC4768691 DOI: 10.7717/peerj.1706] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 01/28/2016] [Indexed: 01/03/2023] Open
Abstract
Ischemia postconditioning (IPo) is a promising strategy in reducing myocardial ischemia reperfusion (I/R) injury (MIRI), but its specific molecular mechanism is incompletely understood. Langendorff-perfused isolated rat hearts were subjected to global I/R and received IPo in the absence or presence of the mitochondrial ATP-sensitive potassium channel (mitoKATP) blocker 5-hydroxydecanoate (5-HD). Myocardial mitochondria were extracted and mitochondrial comparative proteomics was analyzed. IPo significantly reduces post-ischemic myocardial infarction and improved cardiac function in I/R rat hearts, while 5-HD basically cancelled IPo's myocardial protective effect. Joint application of two-dimensional polyacrylamide gel electrophoresis (2DE) and MALDI-TOF MS identified eight differentially expressed proteins between groups. Expression of cardiac succinate dehydrogenase (ubiquinone) flavoprotein subunit (SDHA) increased more than two-fold after I/R, while IPo led to overexpression of dihydrolipoyl dehydrogenase (DLD), NADH dehydrogenase (ubiquinone) flavoprotein 1 and isoform CRA_b (NDUFV1). When the mitoKATP was blocked, MICOS complex subunit Mic60 (IMMT) and Stress-70 protein (Grp75) were over expressed, while DLDH, ATPase subunit A (ATPA) and rCG44606 were decreased. Seven of the differential proteins belong to electron transport chain (ETC) or metabolism regulating proteins, and five of them were induced by closing mitoKATP in I/R hearts. We thus conclude that IPo's myocardial protective effect relies on energy homeostasis regulation. DLD, SDHA, NDUFV1, Grp75, ATPA and rCG44606 may contribute to IPo's cardial protective effect.
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Affiliation(s)
- Song Cao
- Department of Anesthesiology, Zunyi Medical College, Zunyi, China; Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical College, Zunyi, China; Department of Pain Medicine, Affiliated Hospital of Zunyi Medical College, Zunyi, China
| | - Yun Liu
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical College, Zunyi, China; Research Center for Medicine & Biology, Zunyi Medical College, Zunyi, China
| | - Haiying Wang
- Department of Anesthesiology, Zunyi Medical College , Zunyi , China
| | - Xiaowen Mao
- Department of Anesthesiology, The University of Hong Kong , Hong Kong , China
| | - Jincong Chen
- Department of Anesthesiology, Zunyi Medical College , Zunyi , China
| | - Jiming Liu
- Department of Anesthesiology, Zunyi Medical College , Zunyi , China
| | - Zhengyuan Xia
- Department of Anesthesiology, The University of Hong Kong , Hong Kong , China
| | - Lin Zhang
- Department of Anesthesiology, Zunyi Medical College, Zunyi, China; Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical College, Zunyi, China
| | - Xingkui Liu
- Department of Anesthesiology, Zunyi Medical College , Zunyi , China
| | - Tian Yu
- Department of Anesthesiology, Zunyi Medical College, Zunyi, China; Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical College, Zunyi, China
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