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- W2609439463 abstract "// Yao Wang 1 , Su Wei 1 , Yi-Lu Wang 1 , Miao Liu 1 , Man Shang 1 , Qi Zhang 4 , Yan-Na Wu 1 , Ming-Lin Liu 2, 3 , Jun-Qiu Song 1 and Yan-Xia Liu 1 1 Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China 2 Section of Endocrinology, Department of Medicine, Temple University School of Medicine, Philadelphia, PA19140, USA 3 Section of Endocrinology, Department of Medicine, Temple University School of Medicine, Philadelphia, PA 19140, USA 4 Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA Correspondence to: Yan-Xia Liu, email: liu_yanxia126@126.com Jun-Qiu Song, email: song_junqiu@126.com Keywords: microvesicles, ischemia/reperfusion, apoptosis, Bcl-2/Bax, GRP78 Received: October 17, 2016 Accepted: March 28, 2017 Published: April 26, 2017 ABSTRACT Objective: To investigate the effects of circulating microvesicles derived from myocardial ischemia (I-MVs) on apoptosis in myocardial ischemia/reperfusion (I/R) injury in rats. Methods: I-MVs from rats undergoing myocardial left anterior descending (LAD) coronary artery ligation were isolated by ultracentrifugation from circulating blood and characterized by flow cytometry. I-MVs were administered intravenously (4.8 mg/kg) at 5 min before reperfusion procedure in I/R injury model which was induced by 30-min of ischemia and 120-min of reperfusion of LAD in rats. Results: Treatment with I-MVssignificantly reduced the size of myocardial infarction, the activities of serum CK-MB and LDH, and the number of apoptotic cardiomyocytes. The activities of caspase 3, caspase 9 and caspase 12 in myocardium were also decreased significantly with I-MVs treatment. Moreover, the expression of Bax was decreased but Bcl-2 was increased. The expression of glucose regulated protein 78 (GRP78), sarco/endoplasmic reticulum Ca 2+ -ATPase 2 (SERCA2) and phosphorylated phospholamban (p-PLB) were increased after being treated with I-MVs. Conclusion: I-MVs could protect hearts from I/R injury in rats through SERCA2 and p-PLB of calcium regulatory proteins to alleviate intrinsic myocardial apoptosis including mitochondrial and endoplasmic reticulum pathways." @default.
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- W2609439463 date "2017-04-26" @default.
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- W2609439463 title "Protective effects of circulating microvesicles derived from myocardial ischemic rats on apoptosis of cardiomyocytes in myocardial ischemia/reperfusion injury" @default.
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- W2609439463 doi "https://doi.org/10.18632/oncotarget.17424" @default.
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