槐角总黄酮对高脂血症大鼠降血脂及抗氧化能力的实验研究

目的：观察槐角总黄酮对高脂血症大鼠的降血脂及抗脂质过氧化作用.方法：用高脂饲料喂养大鼠4wk,建立实验性高脂血症大鼠模型,给予槐角总黄酮40,80,160mg/kg体质量,连续6wk,以绞股蓝总皂苷为阳性对照,检测血清总胆固醇（TC）、甘油三酯（TG）、高密度脂蛋白胆固醇（HDL-C）、低密度脂蛋白胆固醇（LDL-C）含量;测定血液黏度、肝脏丙二醛（MDA）含量、超氧化物歧化酶（SOD）活力及总抗氧化能力（T-AOC）的变化;逆转录-多聚酶链反应（RT-PCR）检测肝低密度脂蛋白受体（LDL-R）基因mRNA的表达.结果：槐角总黄酮能降低高脂血症大鼠血清TC,TG,LDL-C水平（P〈0.05或P〈0.01）,升高HDL-C水平（P〈0.05）;降低全血黏度,使肝组织MDA水平降低,SOD及T-AOC活力升高,促进LDL-R基因mRNA的表达.结论：槐角总黄酮对高脂血症模型大鼠脂代谢紊乱具有较好的调节作用,可能是通过降低血液黏度、抗脂质过氧化,对肝LDL-R基因mRNA表达的调控来实现其降脂作用.

Study of total flavonoid from fructus sophorae on lipid-lowering in hyperlipidemic rats and its antioxidant capacity

AIM:To explore the antioxidation and the serum lipid lowing effects of total flavonoid from fructus sophorae(TFFS)on experimental hyperlipidemic rat.METHODS:To establish hyperlipoidemic rats model with high lipid diet for 4 weeks and then give experimental treatment with TFFS with dose of 40,80,120 mg/kg of body weight for 6 weeks.Gypenosides was also used as a positive control,the serum were collected to measure the total cholesterol(TC),triglyceride(TG),high density lipoprotein cholesterol(HDL-C),low dens...