依達(dá)拉奉通過SIRT1抑制小鼠阿霉素心肌損傷的作用研究
[Abstract]:Objective: to investigate the protective effect of Edaravone (EDA) on adriamycin-induced myocardial injury in mice. Methods: adriamycin (3mg/kg) was injected intraperitoneally once every other day for 7 times to induce myocardial injury in mice. At the same time, the model was injected intraperitoneally with low and high dose of EDA (5 ~ 10 mg / kg) for 2 weeks. The changes of myocardium morphology, the activities of serum creatine kinase (CK) and lactate dehydrogenase (LDH), and the levels of inflammatory factor TNF- 偽 and interleukin 6 (IL-6), which reflect myocardial tissue, were observed under light microscope. Changes of (SOD), malondialdehyde (MDA) and nitric oxide (no) (NO) contents in myocardial tissue by colorimetric method; Western blot was used to detect the expression of transforming growth factor 尾 1 (TGF- 尾 1) and mammalian homologue 1 (SIRT1) of silencing signaling factor 2 in myocardial tissue. Results: after intervention of EDA, myocardial morphology and myocardial enzyme activity were reduced in mice with myocardial injury induced by doxorubicin. EDA decreased the expression of TNF- 偽 and IL-6 protein in myocardial tissue. EDA also significantly increased the expression of SIRT1 protein and inhibited the expression of TGF- 尾 1 protein in the heart of adriamycin mice. Conclusion: EDA has protective effect on myocardial injury induced by adriamycin, and its mechanism may be by regulating the activity of SIRT1, inhibiting the expression of TGF- 尾 1 protein in the heart, and increasing the ability of antioxidant stress, thus reducing the myocardial damage caused by doxorubicin.
【作者單位】: 咸寧市第一人民醫(yī)院心內(nèi)科;
【分類號】:R965
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