半夏泻心汤对溃疡性结肠炎大鼠结肠组织中TLRs/NF-κB通路相关因子表达的影响
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篇名: 半夏泻心汤对溃疡性结肠炎大鼠结肠组织中TLRs/NF-κB通路相关因子表达的影响
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摘要: 目的:观察半夏泻心汤对溃疡性结肠炎(UC)大鼠结肠组织中核转录因子κB p65(NF-κB p65)、NF-κB抑制蛋白α(IκB-α)及Toll样受体4(TLR4)表达的影响,探讨其治疗UC的可能机制。方法:将大鼠随机分为正常组(生理盐水)、模型组(生理盐水)、柳氮磺吡啶肠溶片(SASP,阳性对照,0.3 g/kg)和半夏泻心汤低、中、高剂量组(3.9、7.8、11.7 g/kg),每组8只。除正常组外,其余各组大鼠均采用三硝基苯磺酸-乙醇法复制UC模型。成模后,ig给药,每天1次,连续3周。给药结束后,检测各组大鼠结肠组织中NF-κB p65、IκB-α、TLR4 mRNA及蛋白的表达。结果:与正常组比较,其余各组大鼠结肠组织中NF-κB p65、IκB-α、TLR4 mRNA及蛋白表达水平均显著升高(P<0.05)。与模型组比较,各给药组大鼠结肠组织中NF-κB p65、IκB-α、TLR4 mRNA及蛋白表达水平均显著降低(P<0.05);半夏泻心汤具有一定的剂量依赖性,且高剂量组大鼠结肠组织中上述水平的降低程度均高于SASP组(P<0.05)。结论:半夏泻心汤可下调UC大鼠结肠组织中NF-κB p65、IκB-α及TLR4 mRNA及蛋白的表达,这可能是其治疗UC的作用机制之一。
ABSTRACT: OBJECTIVE: To observe the effect of Banxia Xiexin decoction on nuclear transcription factor κB p65 (NF-κB p65), NF-κB inhibitory protein α (IκB-α) and Toll-like receptor 4 (TLR4) in colon tissue of rats with ulcerative colitis (UC), and explore the possible mechanism for UC treatment. METHODS: Rats were randomly divided into normal group (normal saline), model group (normal saline), Sulfasalazine enteric coated tablet (SASP, positive group, 0.3 g/kg), Banxia Xiexin decoction low-dose, medium-dose, high-dose groups (3.9, 7.8, 11.7 g/kg), 8 in each group. Except for normal group, other groups were used trinitrobenzene sulfonic acid-ethanol method to reduce UC model. After modeling, they were administrated, ig, once a day, for 3 weeks. After administration, NF-κB p65, IκB-α, TLR4 mRNA and protein expressions in colon tissue of rats in each group were detected. RESULTS: Compared with normal group, NF-κB p65, IκB-α, TLR4 mRNA and protein expressions in colon tissue of rats in other groups were significantly increased (P<0.05). Compared with model group, NF-κB p65, IκB-α, TLR4 mRNA and protein expressions in colon tissue of rats in each administration group were significantly decreased (P<0.05); showing certain dose-dependent, and the decreasing degree of above indexes in colon tissue of rats in Banxia Xiexin decoction high-dose group were higher than SASP group (P<0.05). CONCLUSIONS: Banxia Xiexin decoction can down-regulate the NF-κB p65, IκB-α, TLR4 mRNA and protein expressions in colon tissue of UC rats, which may be one of the mechanisms for UC treatment.
期刊: 2017年第28卷第22期
作者: 赵增强
AUTHORS: ZHAO Zengqiang
关键字: 半夏泻心汤;溃疡性结肠炎;核转录因子κB p65;NF-κB抑制蛋白α;Toll样受体4
KEYWORDS:  Banxia Xiexin decoction; Ulcerative colitis; Nuclear transcription factor κB p65; NF-κB inhibitory protein α; Toll-like receptor 4
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