脂联素受体在胰岛细胞表达,脂联素促进胰岛素的分泌

被引:32
作者
顾卫琼
陈名道
顾元骏
唐金凤
孙首悦
刘长勤
洪洁
张翼飞
李小英
宁光
机构
[1] 上海第二医科大学附属瑞金医院内分泌代谢病科
[2] 上海市内分泌代谢临床医学中心
[3] 上海内分泌代谢病研究所
关键词
脂联素; 受体,脂联素; 胰岛; 胰岛素分泌;
D O I
暂无
中图分类号
R587 [胰岛疾病];
学科分类号
1002 ; 100201 ;
摘要
目的 检测脂联素受体(AR)在大鼠胰岛细胞的表达和脂联素对体外胰岛细胞分泌胰岛素的影响。方法 RT PCR和免疫细胞化学方法检测AR1、AR2的mRNA和蛋白表达;并在体外用脂联素(100μg/L)和不同浓度葡萄糖(3. 3, 5. 6, 16. 7mmol/L)处理胰岛细胞,放免法测定上清液的胰岛素浓度。结果 RT PCR扩增出胰岛AR1和AR2基因,并经直接和亚克隆测序证实;胰岛免疫细胞化学荧光染色AR1和AR2呈阳性;经脂联素处理后的胰岛细胞,在高糖(16. 7mmol/)培养 6~24h,其胰岛素分泌持续增加(均P<0. 05)。结论 胰岛细胞上存在AR1和AR2,以前者为主。在高糖情况下,一定浓度的脂联素可在体外促进胰岛细胞的胰岛素分泌和释放。
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页码:72 / 74
页数:3
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