摘要
目的:观察黄连解毒汤对高脂血症大鼠血脂代谢及其相关基因表达的影响。方法:将50只SD大鼠随机分为正常对照组、模型组、立普妥(阿托伐他汀)组和低、高剂量黄连解毒汤组。除正常对照组外,其他组大鼠喂饲高脂饲料建立高脂血症大鼠模型。连续给药8周后,检测血清总胆固醇(total cholesterol,TC)、三酰甘油(triacylglycerol,TAG)、低密度脂蛋白胆固醇(low-density lipoprotein choles-terol,LDL-C)和高密度脂蛋白胆固醇(high-density lipoprotein cholesterol,HDL-C)水平,并检测各组大鼠肝脏脂蛋白脂酶(lipoproteinlipase,LPL)和肝脂酶(hepatic lipase,HL)活性;利用逆转录聚合酶链反应技术检测各组大鼠肝脏组织低密度脂蛋白受体(low-density lipoprotein receptor,LDLR)和过氧化物体增殖物活化受体γ(peroxisome proliferator-activated receptorγ,PPARγ)mRNA的表达水平。结果:与正常对照组比较,模型组大鼠血清TC、TAG和LDL-C水平显著升高,HDL-C水平显著降低;肝脏LPL、HL活性和LDLR、PPARγmRNA表达水平明显下降。黄连解毒汤组血脂水平均较模型组有不同程度的改善,肝脏LPL、HL活性和LDLR、PPARγmRNA表达水平明显升高。结论:黄连解毒汤可能是通过提高肝脏脂代谢酶的活性,促进肝脏LDLR和PPARγmRNA的表达来调节脂质代谢紊乱的。
Objective.. To observe the effects of Huanglian Jiedu Decoction (HJD), a compound traditional Chinese herbal medicine, on lipid metabolism and its related gene expressions in rats with hyperlipidemia.Methods: Fifty SD rats were randomly divided into normal control group, untreated group, Lipitor (atorvastatin) group, and low- and high-dose HJD groups. Except the normal control group, rats in the other groups were fed with high-fat diet to induce hyperlipidemia. Then the rats were administered with corresponding drugs for g weeks. After treatment, the serum levels of total cholesterol (TC), triacylglycerol (TAG), low-density lipoprotein cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C) were assayed. The activities of lipoprotein lipase (LPL) and hepatic lipase (HL) in liver tissues were measured. Low-density lipoprotein receptor (LDLR) and peroxisome proliferator-activated receptor γ (PPARγ) mRNA expressions in liver tissues were determined by reverse transcription-polymerase chain reaction.Results: Compared with the normal control group, the levels of serum TC, TAG and LDL-C in the untreated group were increased and the level of serum HDL-C was reduced. The activities of LPL and HL and expressions of LDLR and PPARγ mRNAs in the untreated group were lower than those in the normal control group. After treatment, high-dose HJD significantly improved hyperlipemia by decreasing TC, TAG and LDL-C and increasing HDL-C. The activities of LPL and HL and expression levels of LDLR and PPARγ, mRNAs in liver tissues were also markedly enhanced in the high-dose HJD group as compared with those in the untreated group. Conclusion: HJD can activate the activity of lipid metabolism enzyme, and enhance the expressions of LDLR and PPARγ mRNAs to modulate the lipid metabolic disorders in rats with hyperlipidemia.
出处
《中西医结合学报》
CAS
2010年第3期275-279,共5页
Journal of Chinese Integrative Medicine
基金
吉林省科技发展计划青年基金资助项目(No.20080140)
关键词
复方
高脂血症
低密度脂蛋白受体
过氧化物体增殖物活化受体γ
大鼠
compound (TCD)
hyperlipidemia
low-density lipoprotein receptor
peroxisome proliferatoractivated receptor γ
rats