1. 刺槐素对大鼠心肌缺血再灌注损伤的保护作用与机制研究.
- Author
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王洋洋, 杨英来, 信小兵, 陈嘉媛, 韩媛媛, 李丽丹, 朱丽丽, 陈浣洁, 邹 燕, 雷 琎, 李婷婷, 耿广耀, and 王新春
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MYOCARDIAL reperfusion , *ENZYME-linked immunosorbent assay , *REPERFUSION injury , *MYOCARDIAL infarction , *CORONARY occlusion , *TETRAZOLIUM chloride - Abstract
Objective: To explore the effect of acacetin on myocardial ischemia reperfusion injury in rats and its possible mechanism. 24 SPF rats were randomly divided into sham operation group, model control group, acacetin administration group, acacetin+AG490 group, with 6 rats in each group. Myocardial ischemia reperfusion injury model was induced by 30 minutes coronary occlusion followed by 2 h reperfusion in rats. The myocardial infarct area was measured by triphenyltetrazolium chloride, the activities of CK-MB and LDH in serum were detected by ultraviolet spectrophotometer and enzyme linked immunoassay, and the relative expression levels of Bcl-2, Bax, Stat3 and p-Stat3 proteins in myocardium were investigated by Western blot. Compared with the sham operation group, the activities of CK-MB and LDH in serum rose obviously in the model group (P<0.01), the percentage of myocardial infarction area increased significantly (P<0.01), the ratio of p-Stat3/Stat3 and Bcl-2/Bax decreased notably (P<0.01); Compared with the model group, the activities of CK-MB and LDH, the percentage of myocardial infarction area were significantly decreased (P<0.05), and the ratios of Bcl-2/Bax and p-Stat3/Stat3 were increased significantly in the acacetin treated group. However, the protective effect of acacetin on damaged myocardium was cleared by AG490 in the group of acacetin+AG490. Acacetin could alleviate myocardial damage and exert myocardial protection in MIRI rats, and its mechanism might be related to the inhibition of cardiomyocyte apoptosis by activating Jak2/Stat3 signal pathway. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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