红芪多糖对非酒精性脂肪肝大鼠脂代谢及硬脂酰辅酶A去饱和酶1基因表达的影响

目的观察红芪多糖对非酒精性脂肪肝(NAFLD)大鼠脂代谢及调控基因硬脂酰辅酶A去饱和酶1(SCD-1)表达的影响,探讨其对NAFLD的干预效应。方法受试动物按随机数字表法分为空白组和实验组,实验组采用高脂饲料喂养8周造模,随机分为模型组、阳性对照组、红芪多糖组,药物干预8周后分别检测各组大鼠血清丙氨酸氨基转移酶(ALT)、天冬氨酸氨基转移酶(AST)水平及三酰甘油(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-c)、低密度脂蛋白胆固醇(LDL-c)含量,采用半定量PCR检测肝脏SCD-1基因表达。结果与空白组比较,模型组大鼠血清ALT、AST和LDL-c、TC、TG升高(P0.05,P0.01),HDL-c降低(P0.01);SCD-1基因表达降低(P0.01);与模型组比较,红芪多糖组血清ALT、AST降低(P0.01),LDL-c、TC、TG降低(P0.05,P0.01),HDL-c升高(P0.01);肝组织SCD-1基因表达升高(P0.01)。结论红芪多糖具有调节NAFLD大鼠脂代谢紊乱和促进调控基因SCD-1表达的作用。

Effects of Hedysarum Polybotys Saccharide on Lipid Metabolism and Expression of Stearoyl-CoA Desaturase-1 Gene in NAFLD Rats

Objective To investigate the effects of hedysarum polybotys saccharide （HPS） on lipid metabolism and the expression of stearoyl-CoA desaturase-1（SCD-1） gene in rats with non-alcoholic fatty liver disease （NAFLD）. To discuss the interfering effects of HPS on NAFLD. Methods The SD rats were randomly divided into the blank control group and the experiment group. Rats in the experiment group were fed with lipid rich food for 8 weeks to establish model and were randomly divided into model group, drug positive group and HPS group. After 8 weeks of drug intervention, the level of ALT, AST, TC, TG, HDL-c and LDL-c were measured with automatic chemistry analyzer, and expression of SCD-1 gene was measured by semi-quantitative polymerase chain reaction.Results Compared with blank control group, serum ALT, AST and TC, TG, LDL-c of model group were higher （P〈0.05,P〈0.01）, the level of HDL-c of model group and the expression of SCD-1 gene were lower （P〈0.01）. Compared with model group, HPS was useful to decrease serum ALT, AST, LDL-c, TC and TG （P〈0.05,P〈0.01）, and increase the level of HDL-c （P〈0.01） and the expression of SCD-1 gene （P〈0.01）.ConclusionHPS had a positive effect on regulating lipid metabolic disturbance of NAFLD rats and promoting the expression of regulatory gene SCD-1.