【摘要】 目的:探讨经膳食补充抗氧化剂维生素E(VE)、硒及槲皮素对大鼠急性肝损伤早期肝脏星型细胞激活相关性基因zf-9mRNA表达的影响。方法:90只SD大鼠随机分为正常对照组、病理对照组、VE和硒补充组及槲皮素补充组。通过灌胃分别补充VE、Se(VE20mg/kg bw·d,硒16μg/kgbw﹒d)和槲皮素(50mg/kg bw·d)2w后,腹腔内注射CCl4造成急性肝损伤,分别于注射后的3、6、12和24h检测抗氧化状态及肝功能;用胶原酶和链霉蛋白酶灌注肝脏并分离急性肝损伤期各时间点的肝星型细胞,应用半定量聚合酶链反应(RT-PCR)研究zf-9mRNA的表达。结果:膳食补充VE、硒和槲皮素可显著减少急性肝损伤大鼠血清MDA水平,增强SOD活性,保护肝功能;下向调控肝星型细胞激活早期zf-9mRNA的表达。结论:膳食补充抗氧化剂VE、硒及槲皮素可有效地调控HSC激活相关性基因zf-9mRNA的表达。更多还原

【Abstract】 Objective:To investigate the effect of vitamin E, selenium and quercetin on the expression of zf-9 mRNA of hepatic stellate cells (HSC) during early acute liver injury in rats. Methods:90 healthy SD rats were randomly divided into four groups: normal control, pathological control, VE 20 mg/(kg bw﹒d) + Se 16 μg/(kgbw﹒d) supplement, and quercetin 50 mg/(kg bw﹒d) supplement through intragastric way for 15 d respectively. The normal control group was injected with normal saline, the others were given intraperitonal CCl4 once to induce acute liver injury model. The serum levels of MDA, SOD, ALT and AST were determined at 3 h, 6 h, 12 h and 24 h after CCl4 injection respectively. The pronase-collagenase perfusion of liver was used to isolate HSC, and the expression of zf-9 mRNA was examined by RT-PCR. Results: Serum levels of MDA were lower in VE+Se supplement group and quercetin supplement group than pathological group. Supplementation with VE+Se and quercetin could decrease the level of ALT and AST and down-regulate the expression of zf-9 mRNA. Conclusion:Dietary supplementation of VE,Se and quercetin could effectively down-regulate the expression of zf-9 mRNA in HSC during early acute liver injury in rats.更多还原