何首乌二苯乙烯苷的调节血脂作用

目的：研究何首乌的2,3,5,4′-四羟基二苯乙烯-2-O-β-D-葡萄糖苷(TSG)对实验性高脂血症大鼠的调脂作用。方法：高脂血症大鼠分别给予TSG 90,180 mg·kg^-1,阿托伐他汀钙10 mg·kg^-1和生理盐水2 mL灌胃,每日1次,连续给药1周,同时设正常对照组。检测给药前后血清总胆固醇(TC)、总甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)和高密度脂蛋白胆固醇(HDL-C)含量,并计算动脉粥样硬化指数；检测给药后各组低密度脂蛋白受体(LDLR)和羟甲戊二酰辅酶A受体mRNA的表达量。结果：TSG给药1周,能够有效控制高脂血症模型大鼠血清TC和LDL-C升高,可显著降低动脉粥样硬化指数,并且能够增加LDLR的表达。结论：TSG具有良好的调节血脂作用,是中药何首乌调节血脂作用的主要活性成分,具有显著降低血清TC,LDL-C和AI的作用。其中,TSG对于LDL-C和AI的调节作用,以及对基因表达的影响为首次报道。

Blood lipid-regulation of stilbene glycoside from Polygonum multiflorum

OBJECTIVE: To study lipid-regulating action of 2, 3, 5, 4'-tetrahydroxy stilbene-2-O-beta-D-glucopyranoside (TSG) from Polygonum multiflorum on experimental model hyperlipidemic rats. METHOD: TSG 90 and 180 mg x kg(-10 x d(-1), atorvastatin mg kg(-1) x d(-1) and saline 2 mL x d(-1) were administered to hyperlipidemic rats. Groups of rats were determined and compared with those of saline group. The LDLR and HMGR mRNA expression were also detected. RESULT: TSG significantly reduced serum TC and LDL-C level and atherosclerosis index, increased the expression of LDLR in the liver cells. CONCLUSION: TSG, which shows effects and mechanism in part like atorcastatin, is a major constituent with blood-lipid regulating effect of P. multiflorum and can be explored as a potent medication for hyperlipidemia. Effects on LDL-C and AI, as well as on gene expression of TSG were first reported.