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Xiaozheng Zhong,Xiaoyu Li,Lingling Qian,Yiming Xu,Yan Lu,Jing Zhang,Nan Li,Xudong Zhu,Jingjing Ben,Qing Yang,Qi Chen.Journal of Biomedical Research,2012,26(5):/span>
Glycine attenuates myocardial ischemia-reperfusion injury by inhibiting myocardial apoptosis in rats
DOI:10.7555/JBR.26.20110124
Keywordsglycine, glycine receptor 2 subunit, ischemia reperfusion, apoptosis, cardiomyocytes
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Xiaozheng Zhong Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu , China
Xiaoyu Li Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu , China;State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu , China.
Lingling Qian Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu , China
Yiming Xu State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu , China.
Yan Lu Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu , China
Jing Zhang State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu , China.
Nan Li Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu , China
Xudong Zhu State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu , China.
Jingjing Ben Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu , China
Qing Yang Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu , China
Qi Chen Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu , China;State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu , China.
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Abstract
Glycine is a well-documented cytoprotective agent. However, whether it has a protective effect against myocardial ischemia-reperfusion injury in vivo is still unknown. By using an open-chest anesthetized rat model, we found that glycine reduced the infarct size by 21% in ischemia-reperfusion injury rats compared with that in the vehicle-treated MI/R rats. The left ventricular ejection fraction and fractional shortening were increased by 19.11% and 30.98%, respectively, in glycine-treated rats. The plasma creatine kinase levels in ischemia-reperfusion injury rats decreased following glycine treatment. Importantly, administration of glycine significantly inhibited apoptosis in post-ischemia-reperfusion myocardium, which was accompanied by suppression of phosphorylated p38 mitogen-activated protein kinase and c-Jun NH2-terminal kinase, as well as the Fas ligand. These results suggest that glycine attenuates myocardial ischemia-reperfusion injury in vivo by inhibiting cardiomyocytes apoptosis.
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