参蛤散对腹主动脉缩窄心力衰竭大鼠心功能的影响

摘要

目的 研究参蛤散(生晒参、蛤蚧)对腹主动脉缩窄心力衰竭大鼠心功能的影响及其作用机制.方法 心力衰竭大鼠给予参蛤散[1.89 g/(kg·d)]或比索洛尔[1 mg/(kg· d)],给药12周后,观察假手术组、模型组、参蛤散组、比索洛尔组病理形态、血流动力学、心超指数及对过氧化物酶体增殖物激活受体γ辅激活因子-1α(PGC-1α)蛋白表达的影响.结果 与模型组比较,参蛤散升高射血分数(EF) (P＜0.05),降低左室舒张末压(LVEDP)(P＜0.01),改善左室压力最大上升速率(dp/dtmax)和左室压力最大下降速率(dp/dtmin)(P＜0.01),减少心肌组织病变和心肌纤维化.模型组与参蛤散组PGC-1α蛋白表达无显著差异.结论 参蛤散能改善心力衰竭大鼠左室功能,减少心肌组织病变.%AIM To investigate the effects of Shenge Powder (Ginseng Radix et Rhizoma,Gecko) on heart function in rats with heart failure by coarctation of abdominal aorta and its mechanism of action.METHODS The heart failure rats were fed with Shenge Powder [1.89 g/(kg · d)] or bisoprolol [1 mg/(kg · d)] for twelve weeks.The pathological morphology,hemodynamics,cardiographic index and effect on protein expression of PGC-1 α in sham operation group,model group,Shenge Powder group and Bisoprolol group were observed.RESULTS Compared with the model group,Shenge Powder increased ejection fraction (EF) (P ＜ 0.05),decreased left ventricular end-diastolic pressure (LVEDP) (P ＜ 0.01),improved maximal rate of left ventricular pressure development (dp/dtmax) and maximal rate of left ventricular pressure decay (dp/dtmin) (P ＜ 0.01),reduced myocardial tissue lesions and myocardial fibrosis.There was no significant difference in PGC-1α protein expression between the Shenge Powder group and the model group.CONCLUSION Shenge Powder can improve left ventricular function in rats with heart failure,and reduce the pathological changes of myocardium tissue.