生长抑素类似物对急性胰腺炎胰腺组织转化生长因子β1基因改变的研究

被引:11
作者
袁耀宗
楼恺娴
龚自华
涂水平
翟祖康
徐家裕
机构
[1] 上海第二医科大学瑞金医院消化科
关键词
急性胰腺炎; 生长抑素类似物; 转化生长因子β1;
D O I
暂无
中图分类号
R657.51 [];
学科分类号
1002 ; 100210 ;
摘要
目的 观察比较生长抑素类似物治疗大鼠急性胰腺炎前后胰腺组织转化生长因子 β1(trans forminggrowthfactorβ1,TGF β1)的表达、DNA合成及总蛋白含量 ,并探讨其作用机制。方法 以雨蛙肽腹腔注射诱导大鼠急性胰腺炎模型 ,并于生长抑素类似物治疗前后 6、2 4、48、72、96h处死大鼠。同时应用逆转录多聚酶链反应 (RT PCR)技术检测治疗前后胰腺组织TGF β1mRNA表达 ,核素体外掺入法测定胰腺组织DNA合成及Lowry法测定胰腺组织总蛋白含量。 结果 胰腺炎诱导后血清淀粉酶上升 ,生长抑素类似物治疗后显著下降。正常胰腺组织、胰腺炎诱导后 6h ,未见TGF β1mRNA表达。TGF β12 4h后出现表达 ,72h时达高峰。生长抑素类似物治疗后 6h即可检测到TGF β1表达 ,且 2 4h、48h时表达均较非治疗组显著增强 ,并于 2 4h时达最大值。同时胰腺炎诱导后 72h ,DNA合成显著下降 ,治疗后 96hDNA合成明显增加。胰腺炎诱导后 48h总蛋白含量下降 ,治疗后 48h总蛋白含量有明显增高 ,至 96h达高峰。结论 生长抑素类似物治疗急性胰腺炎促进胰腺再生 ,可能是通过诱导TGF β1基因表达增强 ,促进多种细胞外基质成分的合成 ,增加胰腺DNA合成和蛋白含量 ,从而加速胰腺组织的再生和修复
引用
收藏
页码:24 / 27
页数:4
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