麻子仁丸对便秘型小鼠模型通便功能、胃蛋白酶活性和对淋巴细胞增殖的实验研究

目的:观察麻子仁丸对便秘型小鼠模型通便功能、胃蛋白酶活性和对淋巴细胞增值的实验研究。方法:72只小鼠随机分为空白组、模型组、观察组,每组24只,其中模型组和观察组建立便秘模型。空白对照组和模型组不采取任何干预,观察组10丸/d麻子仁丸溶水灌胃。1次/d,疗程7 d。通过墨汁推进法计算肠道推进率观察小鼠通便功能;采用苏木素-伊红染色(HE染色)在显微镜下观察肠道病理学情况;检测胃蛋白酶活性,并通过MTT和流式细胞仪检测淋巴细胞增殖表达情况。结果:1)观察组和模型组的粪便粒数、粪便重量、粒粪便重量和肠道推进率均较空表组减少(P0.05);与模型组比较,观察组中的通便功能明显改善(P0.05)。2)与空白组小鼠比较,模型组小鼠结肠黏膜炎性反应细胞浸涧,肌层变薄,经过药物治疗后,炎性反应有所改善,肌层有所增厚。3)与空白组比较,模型组和观察组2 h胃液量和胃蛋白酶活性明显下降(P0.05);与模型组比较,观察组中的2 h胃液量和胃蛋白酶活性明显提高(P0.05)。4)与空白组比较,模型组和观察组淋巴细胞增殖能力(P0.05),包括T淋巴细胞亚群CD4~+、CD8~+百分数和CD4~+/CD8~+比例均下降(P0.05);与模型组比较,观察组中淋巴细胞增殖能力(P0.05),包括T淋巴细胞亚群CD4~+、CD8~+百分数和CD4~+/CD8~+比例均身高(P0.05)。结论:麻子仁丸能有效改善便秘型小鼠通便功能,提高小鼠胃液蛋白酶活性,其疗效机制可能与提高了淋巴细胞增殖能力,尤其是T淋巴细胞亚群CD4~+、CD8~+百分数和CD4~+/CD8~+比例有关。

Experimental Study on Hemp Seed Pill on Defecation Function, Pepsin Activity and Lymphocyte Proliferation on Rat Constipation Model

To observe the hemp seed pill on defecation function, pepsin activity and lymphocyte proliferation on rat constipation model. Methods: Seventy two rats were randomly divided into three groups: blank control group, model group and treatment group, twenty four rats in each group. The model group and the treatment group were used to establish constipation model. The blank control group and model group were not given intervention. The treatment group was given 10 hemp seed pills by gavage and in drinking water, once a day for a week. The intestine propulsion rate was calculated by ink propelling test to observe the defecation function of rats; Hematoxylin and eosin (H&E) stains were observed under the microscope to observe the conditions of intestinal tract; Pepsin activity was tested and lymphocyte proliferation was observed by using MTT and flow cytometry. Results: 1) Compared with the blank control group, fecal number, fecal weight, particle weight and the intestine propulsion rate in the model group and the treatment group decreased (P<0.05); Compared with the model group, the defecation function of the treatment group was significantly improved (P<0.05). 2) Compared with the blank control group, the inflammatory cell infiltration in colon and the thinning layer of muscle were observed in the model group. After drug treatment, the inflammation was improved and the muscle layer was thicken. 3) Compared with the blank control group, 2 h gastric juice volume and pepsin activity in the model group and the treatment group decreased significantly (P<0.05); Compared with the model group, 2 h gastric juice volume and pepsin activity in the treatment group increased significantly (P<0.05). 4) Compared with the blank control group, the lymphocyte proliferation (P<0.05), including the percentage of CD4+, CD8+ T-cells and T-lymphocyte subsets (CD4+/CD8+) ratios in model group and treatment group decreased (P<0.05); Compared with the model group, the lymphocyte proliferation (P<0.05), including the percentage of CD4+, CD8+ T-cells and T-lymphocyte subsets (CD4+/CD8+) ratios in the treatment group increased (P<0.05). Conclusion: Hemp seed pill can effectively improve defecation function and enhance the enzymatic activity of pepsin, which is relevant with the increasing lymphocyte proliferation, especially with the percentage of CD4+, CD8+ T-cells, and T-lymphocyte subsets (CD4+/CD8+) ratios.