辛伐他汀抑制心肌梗死后心肌细胞凋亡及改善心功能的实验研究

目的:观察辛伐他汀对心肌梗死后心肌细胞凋亡及心功能的影响.方法:结扎大鼠左冠状动脉前降支造成心肌梗死模型,实验组给予药物处理(辛伐他汀40 mg/kg),7天后,TUNEL法检测心肌组织中的凋亡心肌细胞,超声检测左心室功能参数,生化法检测血脂水平.结果:辛伐他汀组较心肌梗死组在梗死区、梗死周边区、远离梗死区凋亡心肌细胞显著减少(P＜0.05),左心室功能改善(P＜0.05),血脂水平没有显著性差异(P＞0.05).结论:辛伐他汀抑制心肌梗死后心肌细胞凋亡,改善心功能.

Experimental study of inhibited cardiomyocyte apoptosis and improved cardiac function by simvastatin after myocardial infarction

Objective:To investigate the effect of simvastatin on cardiomyocyte apoptosis and cardiac dysfuction after myocardial infarction.Method:Simvastatin was administrated to the rats with myocardial infarction which was modeled by left anterior descending coronary artery ligation. After 7days, the apoptotic myocyte cells were quantified by TUNEL staining;left ventricular function index was measured by echocardiography and the level of serum lipid was measured by biochemical method.Results:Compared with infarction group, apoptotic myocyte cells in simvastatin group significantly decreased in infarction zone,border zone and non-infarction zone(P<0.05),and left ventricular function was improved significantly(P<0.05).There was no difference in the level of serum lipid between the groups(P>0.05).Conclusion:Simvastatin inhibits cardiomyocyte apoptosis and improves cardiac function after myocardial infarction.