复方青黛颗粒对溃疡性结肠炎模型大鼠结肠toll样受体2,4基因表达的影响

[目的]观察复方青黛颗粒对溃疡性结肠炎（UC）模型大鼠结肠toll样受体2,4（TLR2,TLR4）基因表达的影响,探讨其治疗UC的可能作用机制。[方法]用三硝基苯磺酸（TNBS）制备UC大鼠模型,将52只SD实验大鼠随机分为正常对照（空白）组、模型组、柳氮磺胺吡啶（SASP）组（500 mg/kg）,复方青黛颗粒低（600 mg/kg）、中（900 mg/kg）、高（1 200 mg/kg）剂量组,从造模后第3天开始分别每天灌胃给药1次至实验结束,第14 d（灌胃10 d后）,用逆转录聚合酶链反应（RT-PCR）法检测TLR2、TLR4的基因表达水平。[结果]模型组TLR2、TLR4基因相对表达量均明显高于空白组（P〈0.01）;复方青黛颗粒中、高剂量组TLR2相对表达量及高剂量组TLR4相对表达量与SASP组比较差异均无统计学意义,但均明显低于模型组（均P〈0.05）。[结论]复方青黛颗粒能有效治疗TNBS诱导的UC模型大鼠,可能与复方青黛颗粒抑制TLR2、TLR4基因表达有关。

Qingdai Granules down-regulate TLR2, TLR4 mRNA expression in the colonic mucosa of rats with ulcerative colitis

[Objective]To investigate the effects of Qingdai Granules(QDG)on the expression of TLR2,TLR4 mRNAs in the colonic mucosa of rats with ulcerative colitis.[Methods]Ulcerative colitis was induced in rats by giving an enema of trinitrobenzene sulphonic acid(TNBS)and ethanol.Fifty two experimental animals were randomly divided into six groups:normal group,model group,sulfasalazine(SASP)group(500 mg/kg),and low,medium and high-dose QDG groups(600,900and 1 200 mg/kg).Except the normal group,the other groups were g...