桑蚕蛹油对大鼠血脂水平及血小板功能的影响

Effects of silkworm pupa oil on serum lipids level and platelet function in rats

为观察桑蚕蛹油和桑蚕蛹油加维生素E(VE)对大鼠血脂水平和血小板功能的影响 ,选取雄性成年Wistar大鼠 40只 ,按血脂水平分为 4组 :正常对照组 ,高脂对照组 ,桑蚕蛹油组和桑蚕蛹油 +VE组 ,分别喂饲各组饲料。 6周后 ,测定血脂水平和血小板功能。结果显示 ,(1)与高脂对照组相比 ,桑蚕蛹油可显著降低大鼠血清总胆固醇 (TC)、甘油三酯 (TG)、低密度脂蛋白胆固醇 (LDL C)水平和致动脉粥样硬化指数 (AI) ,升高血清高密度脂蛋白胆固醇 (HDL C)水平 ;血小板聚集率 ,血浆血栓素B2 (TXB2 )水平以及TXB2 6 k PGF1α(T P)比值显著降低 ,6 酮前列腺素F1α(6 k PGF1α)水平显著上升 ;(2 )桑蚕蛹油 +VE组大鼠血清TC、LDL C水平显著低于桑蚕蛹油组 ,血小板聚集率 ,T P比值也显著降低。提示 ,富含α 亚麻酸的桑蚕蛹油能降低大鼠血脂水平 ,抑制血小板聚集 ,加入VE后 。

To observe the effects of silkworm pupa oil on serum lipids level and platelet function in rats, accordiong to serum TG,TC level, 40 male Wistar rats are divided into four groups ( normal control group, high fat control group, silkworm pupa oil group and silkworm pupa oil + VE group). The rats are fed different diets and six weeks later, serum lipids level and platelet function are measured. The results show that (1)Compared with high fat control group, serum TC, TG, LDL-C level, AI value, Platelet aggregability, plasma TXB 2 level and T/P ratio decrease significantly while HDL-C level and 6-k-PGF 1αlevel increase in silkworm pupa oil group; (2) Serum TC,LDL-C level , T/P ratio and platelet aggregability are significantly lower in silkworm pupa oil+VE group than in silkworm pupa oil group. It is suggested that silkworm pupa oil rich in alpha-linolenic acid can reduce serum lipids level and inhibit platelet aggregation, which is more effective with the supplementation with VE.