摘要:
Objective After the islet transplantation,observed blood glucose and survival time in the islet transplantation mice model to explore the effect of intestinal epithelial γδT cell in islet transplantation rejection.Methods Established the mice model of islet transplantation,divided into wild type mice group,γδ gene knockout mice group and γδ gene knockout γδT cell reinfusion mice group,observed blood glucose in 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29 days after surgery and pathological conditions aft er two weeks of transplantation.Results After transplantation,the rising blood glucose of wild type mice group and γδ gene knockout γδT cell reinfusion mice group were significantly slower than that of γδ gene knockout mice group (P<0.05),but there was no significant difference in between two groups (P>0.05).The survival time of wild-type mice group was (27±2) days,and γδ gene knockout γδT cell reinfusion mice group was (24±1) days,they were significantly longer than (17±3) days of γδ gene knockout mice group (P< 0.05).Conclusion As a special kind of T cells,γδT intestinal epithelial cell plays an important role in the islet transplantation rejection.%目的 通过胰岛移植模型,观察移植后小鼠血糖及存活时间,从而探讨肠上皮γδT细胞在胰岛移植排斥反应中的作用.方法 建立小鼠胰岛移植模型,分为野生型小鼠组、γδ敲基因小鼠组和γδ敲基因回输γδT细胞小鼠组,移植后分别于1、3、5、7、9、11、13、15、17、19、21、23、25、27、29 d测量空腹血糖,并于术后两周取移植物观察病理情况.结果 术后野生型小鼠组和γδ敲基因回输γδT细胞小鼠组移植后血糖升高明显慢于γδ敲基因小鼠组,差异有统计学意义(P<0.05),γδ敲基因回输γδT细胞小鼠组与野生型小鼠组差异无统计学意义(P>0.05).野生型小鼠组存活时间(27±2)d及γδ敲基因再回输组小鼠组存活时间(24±1)d均明显长于γδ敲基因小鼠组的(17±3)d,差异有统计学意义(P<0.05).结论 肠上皮γδT细胞作为一种特殊的T细胞在胰岛移植排斥反应中起着重要作用.