山楂、魔芋及其复合物对高脂血症大鼠脂质代谢及血浆NO水平的影响

Interventional effects of hawthorn, konjac and their compound on the levels of lipid and NO in plasma of rats being induced to hyperlipidemia

目的观察山楂、魔芋及其复合物对高脂饲料诱导的高脂血症大鼠脂质代谢、血浆一氧化氮(NO)水平的影响,为通过营养干预防治高脂血症及心血管疾病提供实验依据。方法选择50只健康成年Wistar大鼠随机分为5组,分别饲以基础饲料、高脂饲料、高脂饲料补充山楂粉、高脂饲料补充魔芋精粉及高脂饲料补充山楂魔芋复合物。饲养8周后测定血中脂质及NO含量。结果山楂、魔芋及山楂魔芋复合物能显著降低高脂饲料诱导的大鼠血清总胆固醇、甘油三酯、极低密度脂蛋白胆固醇、低密度脂蛋白胆固醇的升高,同时显著升高大鼠血清高密度脂蛋白胆固醇以及血浆NO值。结论山楂、魔芋及山楂魔芋复合物具有明显的降血脂作用,同时升高血清高密度脂蛋白胆固醇和NO。提示具有保护血管内皮细胞及防治心脑血管疾病的作用。且复合组降低极低密度脂蛋白胆固醇及升高大鼠血清高密度脂蛋白胆固醇显著优于山楂组。

Objective To investigate the effects of hawthorn powder, refined konjac flour and their compound on the levels of lipid and NO in plasma of rats being induced to hyperlipidemia by high-fat and high-cholesterol diet. Methods Fifty adult Wistar rats were randomly divided into five groups which were fed with normal diet, high-fat and high-cholesterol diet (HFD), HFD plus hawthorn powder, HFD plus refined konjac flour, HFD plus hawthorn and konjac compound, respectively. At week 4 and 8, 20 and 30 rats respectively were sacrificed for detecting the levels of lipid and NO in the blood. Results Hawthorn powder, refined konjac flour and their compound could significantly inhibit the increase of blood total cholesterol, triglycerol, VLDL-C, LDL-C induced by HFD and can significantly increase HDL-C and NO in plasma. Conclusion Hawthorn powder, refined konjac flour and their compound have the lipid-lowering effect. The hawthorn and konjac compound has better effects on increasing HDL-D and reducing VLDL-C. So they are beneficial to the prevention of atherosclerosis.