瑞舒伐他汀抗糖尿病性心肌病的实验研究

目的探讨瑞舒伐他汀对大鼠糖尿病性心肌病(DCM)的影响。方法将雄性Wistar大鼠50只随机分为正常对照组(n=8)、DCM组(n=21)和DCM+瑞舒伐他汀组(n=21)。DCM组和DCM+瑞舒伐他汀组腹腔注射链脲佐菌素(STZ)建立DCM大鼠模型,DCM+瑞舒伐他汀组大鼠每天以瑞舒伐他汀20mg/kg灌胃,20周后评价各组的体质量、空腹血糖、空腹胰岛素、甘油三酯及胆固醇。采用彩色多普勒超声心动图仪观测左室舒张末期内径(LVIDd)、左室收缩末期内径(LVIDs)、短轴缩短率(FS)及射血分数(EF),二尖瓣及三尖瓣瓣膜返流情况、二尖瓣口E波最大速度、A波最大速度、E/A的比值、E波减速时间(EDT′)、等容舒张时间(IVRT′)及主动脉血流最大速度(APV)等改变。结果①注射STZ1周后,与正常对照组相比,DCM组和DCM+瑞舒伐他汀组大鼠体质量均显著升高(P均<0.05),空腹胰岛素、血清胆固醇及甘油三酯均明显升高(P<0.01,P<0.05);实验末,与正常对照组相比,DCM组和DCM+瑞舒伐他汀组大鼠体质量显著下降(P均<0.01),空腹胰岛素水平明显降低(P均<0.05),空腹血糖及甘油三酯水平显著升高(P均<0.01),DCM组胆固醇水平显著升高(P<0.01);②超声心动图显示,与正常对照组相比,DCM组和DCM+瑞舒伐他汀组大鼠实验末LVIDd值及LVIDs值明显增加(P均<0.01),二尖瓣和三尖瓣瓣膜返流发生率显著增加(P均<0.05),E/A比值及LVEF降低(P均<0.01);DCM+瑞舒伐他汀组大鼠LVIDd值及LVIDs值较DCM组减小(P均<0.05),房室瓣瓣膜返流发生率减少(P均<0.05),E/A比值及EF升高(P均<0.05)。结论瑞舒伐他汀对DCM大鼠的心功能和心肌重构有一定改善作用。

Effects of resovastain on prevention of experimental diabetic cardiomyopathy in rats

Objective To investigate effects of resovastain on the cardiac function of diabetic cardiomyopathy(DCM) in rats.Methods 50 Wistar rats 8 week old were randomly divided into three groups: the normal control group(n=8),the DCM group(n=21) and the DCM plus resovastain group(n=21).Four weeks later,the DCM animal model was established by intraperitoneal injection of streptozotocin(STZ),which reached the standard was used for the following procedure;the DCM plus resovastatin group was intragastrically administere...