甲鱼蛋粉调节大鼠血清胆固醇的基础研究

目的　研究甲鱼蛋粉对高胆固醇血症大鼠血清胆固醇的调节作用。方法　将 5 0只健康雄性SD大鼠按体重和血清胆固醇水平随机分成 5组 ,每组 10只 ,分别接受正常饲料、高脂饲料、高脂饲料加甲鱼蛋粉灌胃 (低、中、高剂量分别为 0 75、1 5 0、3 0 0 kgBW)处理 ,实验周期为 2 4周 ,实验期末 ,收集大鼠粪便 ,股动脉取血 ,酶法测定血清胆固醇 (TC)、高密度脂蛋白胆固醇 (HDL C)和低密度脂蛋白胆固醇 (LDL C)的含量 ,气相色谱法检测粪便胆固醇、粪甾醇、粪甾烯 ,循环酶法测定总胆汁酸的含量。结果　与高脂饲料组相比 ,中剂量和高剂量的甲鱼蛋粉均能显著降低 (P <0 0 5 )高胆固醇血症大鼠血清TC ,且剂量为 1 5 0g kgBW时能显著降低血清LDL水平 ;两剂量组均显著增加粪便胆固醇、粪甾醇和粪甾烯以及胆汁酸的排出。结论　甲鱼蛋粉是通过增加粪便固醇类以及胆汁酸的排出来达到降低模型大鼠血清胆固醇的作用

Fundamental study on the cholesterol-lowering effect of whole turtle egg powder in SD rats

Objective In order to study the cholesterol-lowering effects of whole turtle egg powder.Methods Fifty male SD rats were randomly divided into 5 groups according to body weight and serum cholesterol levels. They were fed one of five diets, a chow diet, a high fat supplemented diet (HF) and a HF diet supplemented with 0.75, 1.50 and or 3.00g/kg BW whole turtle egg powder. After 24 weeks, collecting of the fecal and blood, serum total cholesterol (TC), high density lipoprotein cholesterol (HDL-C) and low density lipoprotein cholesterol (LDL-C) levels were determined by enzymic methods on an automatic analyzer. Results The serum TC levels were significantly decreased in both 1.50g/kg BW group and 3.00g/kg BW group compared with the HF rats (P<0.05). Both 1.50g/kg BW and 3.00g/kg BW whole turtle egg powder increased fecal cholesterol, coprostanol and coprostanone excretion as well as total bile acids. Conclusion The whole turtle egg powder lowered serum cholesterol by increasing the fecal steroids and turtle bile acids excretion.