CDCA在C57BL/6小鼠中上调肝脏成纤维细胞生长因子21表达及其效应
Journal of Third Military Medical University(2012)
Abstract
目的研究法尼酯X受体(farnesoid X receptor,FXR)的激活对C57BL/6小鼠肝脏中纤维细胞生长因子21(fibroblast growth factor 21,FGF21)基因表达的影响。方法将18只3~4周龄C57BL/6小鼠随机分为3组,分别使用不同浓度鹅脱氧胆酸(chenodeoxy cholic acid,CDCA,0、10 mg/kg和50 mg/kg)给小鼠灌胃7 d,处死后分别提取小鼠肝脏总RNA和总蛋白,采用RT-PCR法和Western blot法检测各组小鼠FGF21RNA和蛋白表达水平的变化;同时用酶法测定检测小鼠血甘油三酯(TG)、胆固醇(TC)及血糖(GLU)变化。结果 C57BL/6小鼠肝脏中FGF21 RNA和蛋白的表达水平呈CDCA剂量依赖型增高;小鼠血脂及血糖测定结果显示:TG,TC和血糖随CDCA浓度的升高而下降。结论 CDCA可上调C57BL/6小鼠肝脏中FGF21的表达并导致血TG、TC及GLU下降。
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Key words
chenodesoxycholic acid,farnesoid X receptor,blood glucose,plasma lipid,fibroblast growth factor 21
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