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枯草杆菌二联活菌对溃疡性结肠炎大鼠的作用及机制 被引量:7

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摘要 目的探讨枯草杆菌二联活菌肠溶胶囊(美常安)对溃疡性结肠炎(UC)大鼠结肠促炎症性细胞因子白细胞介素(IL)-1β和细胞黏附分子CD44表达的影响及其作用机制。方法采用2,4,6-三硝基苯磺酸(TNBS)/乙醇法灌肠建立UC大鼠模型。将SD大鼠随机分成正常对照组、模型组、美常安治疗组。观察各组疾病活动指数(DAI)、结肠组织病理学评分(HPS)。造模及美常安干预7 d后处死大鼠,取结肠行HE染色,观察镜下结肠病理变化。RT-PCR法检测各组大鼠肠黏膜细胞因子IL-1βmRNA表达,流式细胞仪检测各组大鼠结肠组织中黏附分子CD44的含量。结果模型组较正常对照组大鼠结肠黏膜可见脓性分泌物、糜烂及溃疡,美常安干预后显著改善UC大鼠结肠黏膜的病理变化,DAI和HPS评分下降显著,并明显降低UC大鼠IL-1βmRNA和CD44的表达(P<0.05)。结论枯草杆菌二联活菌可能通过下调UC大鼠IL-1βmRNA和CD44的表达而发挥干预作用。
出处 《中国老年学杂志》 CAS 北大核心 2017年第1期27-29,共3页 Chinese Journal of Gerontology
基金 广西壮族自治区卫生厅自筹经费科研课题(No.Z2014269)
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