富硒蒜对实验性高脂血症大鼠血脂及脂质过氧化作用的影响

为了观察富硒蒜对实验性高脂血症大鼠脂和抗氧化能力的影响，取76只成年Wistar大鼠分为6组，雌雄各半，A组为正常对照组，B组为高脂（HFD）对照组，C组为HFD＋亚硒酸钠组，D组为HFD＋富硒蒜组，E组为HFD＋普通蒜组，F组为HFD＋普通蒜＋亚硒酸钠组，A，B、E组饲料硒水平为0．08mg/kg，其它三组为2．7mg/kg，实验期12周，结束时取血及肝，肾组织进行生化测定和肝病理检查，结果表明，C，D和F组动物血清总胆固醇，甘油三酯和低密度脂蛋白胆固醇含量都显著低于高脂对照组，而高密度脂蛋白胆固醇则高于高脂对照组，雌鼠的血脂对高脂饲料的反应比雄鼠更敏感。C，D，E，F组动物体内过氧化状态升高的程度均显著低于高脂对照组动物，表现为肝组织内脂质过氧化物丙二醛的含量显著降低及肝组织及红细胞内谷胱甘肽过氧化物酶活力和血浆内过氧化物歧化酶活力不同程度地升高，D，F组雄性动物肝，肾中硒含量高于C组，最显著的是在该两组雌雄动物红细胞中大量蓄积硒，病理检查发现，四个实验组动物肝组织含量高于C组，最显著的是在该两组雌雄动物红细胞中大量蓄积硒，病理检查发现，四个实验组动物肝组织脂肪变性的程度显著轻于高脂对照组动物，在D组动物中表现得尤明显结果说明，从预防高血脂和对抗脂质过氧化作用的角度，富硒蒜优于亚硒酸钠或普通蒜，也稍优于合并使用普通蒜和亚硒酸钠。

Effects of selenium-enriched garlic on blood lipids and lipid peroxidation in experimental hyperlipidemic rats

The modulating effects of selenium enriched garlic on lipid metabolism disorder and lipid peroxidation were studied in hyperlipidemic rats induced by high fat diet. Adult male and female Wistar rats were divided into 6 groups: (A) normal control; (B) high fat diet (HFD) control; (C) HFD+selenite; (D) HFD+selenium enriched garlic; (E) HFD+common garlic; (F) HFD+common garlic+selenite. The selenium content of diets in groups A, B and E was 0 08 mg/kg diet, while that of the other 3 groups was 2 7 mg/kg diet. At the end of the experimental period (12 weeks), blood and liver were collected for biochemical measurements and for histopathological examination of liver. The results showed that the serum concentrations of TC, TG and LDL C in groups C, D and F were significantly lower and HDL C higher than group B. Female rats were more sensitive to HFD exposure than male rats. The peroxidative status of all four experimental groups was significant inhibited as shown by the lower lipid peroxide (MDA) in liver and higher activities of GPX in erythrocytes and liver and SOD in plasma. Selenium contents in liver and kidney of male rats in groups D and F were higher than group C. Significant accumulation of selenium in erythrocytes was observed in groups D and F. The liver of all four experimental groups revealed ameliorated fatty liver induced by HFD. The amelioration of group D was more prominent than other three experimental groups. The results suggested that selenium enriched garlic is superior to selenite or common garlic in decreasing the blood lipid level and peroxidative status and slightly better than combined common garlic and selenite.