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胆汁酸衍生物INT-767激活FXR及TGR5降低小鼠动脉粥样硬化风险 被引量:5

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摘要 目的探讨胆汁酸衍生物INT-767激活FXR及TGR5及其对小鼠动脉粥样硬化风险的影响。方法选取8周龄载脂蛋白(Apo)E-/-和低密度脂蛋白(LDL)R-/-的C57BL/6J小鼠分别用含INT-767(30 mg/kg)高纯度饲料(D12079B)喂养12 w和16 w,收集样本后进行组织生化分析(主动脉窦组织生化分析),对CD68和MCP1进行免疫荧光检测,血清样本进行快速蛋白液相色谱分析;血清胆汁酸水平通过q TRAP LC-MS/MS法检测。血清炎性细胞因子水平通过酶联免疫吸附(ELISA)试剂盒检测。采用电泳迁移率实验(EMSA)测定核转录因子(NF)-κB与DNA的结合活性。结果 INT-767可降低Apo E-/-和LDLR-/-小鼠血清胆固醇和甘油三酯水平,抑制肝CYPB1表达下调血清胆酸和去氧胆酸水平,从而抑制LDLR-/-和APOE-/-小鼠动脉粥样硬化斑块形成、降低Apo E-/-小鼠巨噬细胞浸润和炎症水平;INT-767主要是通过激活TGR5降低巨噬细胞细胞因子表达水平。结论胆汁酸的类似物INT-767可通过双激活TGR5和FXR调控靶基因,降低和减缓动脉粥样硬化的风险。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2015年第16期4488-4491,4491,共4页 Chinese Journal of Gerontology
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参考文献12

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