黄芪总皂甙对病毒性心肌炎小鼠心肌损伤及肌浆网钙泵的影响

目的：观察黄芪总皂甙（ＡＳ）及黄芪注射液（ＡＩ）对病毒性心肌炎（ＶＭＣ）小鼠心肌损伤的保护作用及其对心肌肌浆网钙泵的影响。方法：腹腔接种柯萨奇Ｂ３亲心肌病毒株建立小鼠ＶＭＣ模型，分成模型组，ＡＳ组，ＡＩ组及正常对照组，分别观察各组小鼠死亡率，心肌病理变化，血清心肌肌钙蛋白Ｉ（ｃＴｎＩ）含量及心肌肌浆网钙泵（ＳＥＲＣＡ）活力等指标，结果：模型组死亡率高于对照组（Ｐ＝０．００４２）ＡＳ组及ＡＩ组（Ｐ〉

Effects of Astragaloside in Treating Myocardial Injury and Myocardial Sarco/Endoplasmic Ca2+-ATPase of Viral Myocarditis Mice

To investigate the effects on myocardial injury and sarcoplasmic reticulum (SR) Ca 2 ATPase of viral myocarditis mice treated with Astragaloside (AS) and Astragalus Injection (AI). Methods: Viral myocarditis model was created by intraperitoneal inoculation with coxsackievirus B 3m (CVB 3m ) solution and were divided into model, AS, AI and normal control groups. The mortality, myocardial pathological changes, serum cardiac troponin I (cTnI) and the activity of myocardial Sarco/Endoplasmic Ca 2 ATPase (SERCA) were observed. Results: The mortality of model was higher than that of the normal control (P=0.0042), AS and AI (P<0 05). The serum level of cTnI of model was significantly higher than that of the normal control (P<0 001), AS (P<0 025) and AI (P<0 05). The myocardial necrosis and inflammatory changes of AS and AI groups were alleviated than that of model (P<0 01). The activity of myocardial SERCA of model were significantly lower than that of normal control (P<0 001), AS (P<0 01) and AI (P<0 05). Conclusions: AS and AI have some protecting effects on myocardial injury of viral myocarditis mice. AS is the effective component of Astragalus membranaceus in treating viral myocarditis. One of the mechanisms of Astragalus membranaceus and AS for viral myocarditis mice depriving of the myocardial injury may be due to improve the activity of myocardial SERCA in the mice.