Objective To comparatively observe the effect of electroacupuncture at digestive system-related lower he-sea points on the expressions of serum interleukin-1β（IL-1 β）, tumor necrosis factor-α（TNF-α） of colon tissues and high mobility group box 1 protein（HMGB 1） of ulcerative colitis（UC） model rats, and to explore whether there is relative specificity of electroacupuncture at Shàngjùxū（上巨虚 ST 37）, one of lower he-sea points of large intestine, in treatment of bowel diseases. Method A total of 60 SD rats were randomly divided into control group, model group, ST 37 group, Zúsānl？（足三里 ST 36） group, Xiàjùxū（下巨虚 ST 39） group and Yánglíngquán（阳陵泉 GB 34） group. There were ten rats in each group; five were males, and five were females. UC models were established by clysis with 2, 4, 6-trinitrobenzene sulfonic acid/alcohol solution. After modeling, treatment was conducted for ten days, specimens were collected, colonic ulcers and inflammation were inspected visually and scored. The content of serum IL-1β and the expressions of TNF-α and HMGB 1 in colon were detected through ELISA. Results 1 Compared with control group, the scores of colonic ulcers and inflammation, the content of serum IL-1β and the expressions of TNF-α（except ST 37 group） and HMGB 1 were all higher（P〈0.05, P〈0.01）; 2 compared with model group, the scores of colonic ulcers in ST 36 group and ST 37 group were lower obviously（P〈0.05, P〈0.01）; the expressions of IL-1β, TNF-α and HMGB 1 in the four treatment groups were lower obviously（P〈0.01）; 3 compared with ST 37 group, the expressions of IL-1β, TNF-α and HMGB 1 in other three treatment groups were higher obviously（P〈0.05, P〈0.01）; and the scores of colonic ulcers in ST 39 group and GB 34 group were higher obviously（P〈0.05）. Conclusion 1 The score of colonic ulcers can be reduced through electroacupuncture at ST 37, ST 36, ST 39 and GB 34, which can also reduce the content of serum IL-1β
目的对比观察电针溃疡性结肠炎大鼠上巨虚、足三里、下巨虚、阳陵泉等穴后对结肠组织白介素-1β(IL-1β)及烟碱型乙酰胆碱受体a7信使核糖核酸(nchRa7mRNA)表达的影响,探讨大肠下合穴上巨虚治疗对应腑病是否存在相对特异性。方法将70只健康SD大鼠随机分为空白组、模型组、上巨虚组、足三里组、下巨虚组、阳陵泉组及承筋组,每组10只,雌雄各半。除空白组外均采用2-4-6三硝基苯磺酸/乙醇溶液灌肠诱导建立大鼠溃疡性结肠炎模型,造模成功并治疗10 d后,肉眼观察大鼠结肠黏膜溃疡及炎症情况,ELISA法检测大鼠结肠组织中IL-1b含量,RT-PCR检测nAchRa7mRNA的表达。结果与模型组比,各穴位组结肠损伤有不同程度好转,组织IL-1β含量明显偏低而n ACh Ra7m RNA表达均较高(P<0.05,P<0.01),且上巨虚组、足三里组结肠溃疡评分亦较低(P<0.05,P<0.01);与上巨虚组比,其他4个穴位组结肠n AChRa7mRNA表达均较低(P<0.01),而下巨虚组、阳陵泉组、承筋组结肠溃疡及炎症损伤较严重,结肠溃疡评分及IL-1b含量均偏高(P<0.05,P<0.01)。结论电针治疗溃疡性结肠炎的机制可能是通过影响IL-1β、n Ach Ra7m RNA等调节异常的免疫功能,改善结肠黏膜损伤等来实现的;上巨虚治疗溃疡性结肠炎的总体效应优于足三里、下巨虚、阳陵泉及承筋穴,说明上巨虚穴与对应大肠腑之间存在一定的相对特异性。
