两种胆汁淤积模型肝毒性及胆汁酸代谢调控模式研究

被引:9
作者
陈楚颖
代曼云
徐港铭
华慧英
刘爱明
机构
[1] 宁波大学医学院生理药理学系
关键词
胆汁淤积; LCA; ANIT; 胆汁酸代谢;
D O I
暂无
中图分类号
R575 [肝及胆疾病];
学科分类号
100201 [内科学];
摘要
目的:建立石胆酸(LCA)胆汁淤积性小鼠模型与α-荼异硫氰酸酯(ANIT)胆汁淤积模型,系统评价其生化、病理、胆汁酸代谢转运调控机制等,探索其规律性并比较两模型间的差异,为胆汁淤积性肝病的治疗提供实验依据。方法:20只雄性小鼠随机分为4组:LCA对照组、LCA实验组、ANIT对照组、ANIT实验组。LCA实验组小鼠按照300 mg/kg/d予以LCA灌胃,2次/d,连续5天,第5次给药完毕12 h后处死。ANIT实验组小鼠按照75 mg/kg单剂量予ANIT灌胃,48 h后处死。分析和比较两种模型小鼠生化指标、组织病理学变化、胆汁酸代谢转运调控规律。结果:两组模型小鼠生化指标终点一致,但生化指标上升过程及病理表现则不同,LCA主要是直接损伤肝细胞,ANIT是直接损伤胆管系统;两者在胆汁酸合成、转运、排泄基因表达程度等方面有差异,但调控模式都属于反馈性调控。结论:LCA与ANIT胆汁淤积模型都是研究肝内胆汁淤积的可靠模型,两个模型终点生化指标一致、对胆汁酸的代谢与转运的调控模式一致;但两者病理损伤机制不同,ANIT是首先损伤胆管系统,而LCA主要损伤肝细胞。
引用
收藏
页码:230 / 233+258 +258
页数:5
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