褐藻糖胶(FPS)对高脂血症大鼠肝脏LDL-R mRNA表达的影响

目的：探讨褐藻糖胶（FPS）对高脂血症大鼠肝低密度脂蛋白受体（LDL—R）mRNA表达的影响。方法：取健康雄性SD大鼠60只，随机分为六组，正常组、模型组、绞股蓝组、FPS低剂组、FPS中剂组、FPS高剂组。除正常组外，其余各组以高脂乳剂灌胃形成大鼠高脂血症模型。观察各给药组大鼠肝脏LDL—RmRNA的表达。结果：FPS中、低剂量组LDL—RmRNA相对含量显著高于模型组；FPS中剂组与绞骨蓝组相比，含量无显著性差异。结论：FPS可显著增强高脂血症大鼠肝脏LDL—RmRNA的表达，促进低密度脂蛋白胆固醇（LDL—C）的清除，达到有效降低血清胆固醇的作用。

Influence of FPS on the Expression of LDL-R mRNA in the Liver Tissues of Hyperlipidemic Rats

OBJECTIVE: To explore the effect of FPS on low-density lipoprotein acceptor (LDL-R) mRNA in the liver tissues of hyperlipidemic rats. METHODS: Sixty healthy male SD rats were randomly divided into six groups: normal control, model control, Gynostemma pentaphyllum, FPS low dosage, FPS moderate dosage, and FPS high dosage group. Excepting the rats in the normal control group, the ones in other groups were all made rats' hyperlipidemic model by irrigating hyperlipidemic emulsion into the stomach and observed the expression of LDL-R mRNA in the liver tissues of rats of each group. RESULTS: Relative content of LDL-RmRNA in low and moderate dosage groups was notably higher than that inmodel group. The contents's difference was not remarkable between FPS moderate dosage group and Gynostemma pentaphyllum group. CONCLUSION: FPS can appreciably increase the expression of LDL-R mRNA in the liver tissues of hyperlipidemic rats and promote the elimination ofLDL-C to reduce serum cholesterol notably.