Objective To observe the protective effect of Panaxadiol Saponins (PDS)on rabbit heart failure model induced by acute alcohol infusion, and to explore its action mechanism of protecting myocardium. Methods 1 5 healthy rabbits were randomly divided into control group, model group and PDS group, 5 rabbits in each group.The rabbits in control group were given 0.2 g·mL-1 saline by intravenous drip at constant speed,the rabbits in model group were given 20% ethanol with same method, and the rabbits in PDS group were given 0.025 g·kg-1 PDS by intravenous injection before intravenous drip of 20% ethanol.The hemodynamic changes were observed by ventricular intubation;the levels of serum lactate dehydrogenase (LDH),creatine kinase (CK), and creatine kinase isoenzyme (CKMB)were determined by colormetric method.The level of malondialdehyde (MDA)in myocardial tissue homogenate,the activities of superoxide dismutase (T-SOD),glutathione peroxidase (GSH-Px)and catalase (CAT)were also detected.Results Compared with control group,the left ventricular end-diastolic pressure (LVEDP)of the rabbits in model group was significantly decreased at 30 min(P<0.05);the serum LDH,CK and CKMB levels were increased(P<0.05),the MDA level in myocardial tissue homogenate was increased(P<0.05),and the T-SOD,GSH-Px and CAT activities were decreased (P<0.05).Compared with model group,the LVEDP of the rabbits in PDS group was increased,the serum LDH,CK,and CKMB levels were decreased(P<0.05),the MDA level was decreased(P<0.05),and the activities of T-SOD,GSH-Px and CAT were increased(P<0.05).Conclusion PDS has protective effect on heart failure induced by acute alcohol infusion,and its mechanism may be related to the improvement of cardiac peroxidation.%目的:探讨人参二醇组皂苷(PDS)对家兔酒精性心力衰竭的保护作用,阐明 PDS保护心肌的作用机制。方法:15只健康家兔随机分为对照组、模型组和 PDS 组,每组5只。对照组家兔静脉滴注生理盐水0.2 g·mL-1,模型组家兔恒速静脉滴注20%酒精(0.1 g·kg-1·min-1),PDS 组家兔静脉滴注酒精前给予PDS 0.025 g·kg-1。心室内插管检测各组家兔的血流动力学变化;比色法检测家兔血清中乳酸脱氢酶(LDH)、肌酸激酶(CK)和肌酸激酶同工酶(CKMB)水平,检测心肌组织匀浆中丙二醛(MDA)水平、总超氧化物歧化酶(T-SOD)、谷胱甘肽过氧化物酶(GSH-Px)和过氧化氢酶(CAT)活性。结果:与对照组比较,模型组家兔左心室内舒张末期压(LVEDP)在开始记录30 min时显著降低(P<0.05),血清 LDH、CK 和 CKMB水平升高(P<0.05),心肌组织匀浆中 MDA水平升高(P<0.05),T-SOD、GSH-Px和 CAT活性下降(P<0.05);与模型组比较,PDS组家兔 LVEDP显著升高,血清 LDH、CK及CKMB水平下降(P<0.05),心肌组织匀浆中 MDA水平下降(P<0.05),T-SOD、GSH-Px及CAT活性升高(P<0.05)。结论:PDS对家兔急性酒精性心力衰竭具有保护作用,其作用机制可能与改善心肌过氧化损伤有关。
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