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Apoptosis and expression of apoptosis-related proteins Bid and Bcl-xL in human small intestinal adenocarcinoma
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- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 11
- DOI:
- 10.3969/j.issn.1009-3079.2010.11.009
- Key Word:
- 小肠腺癌;凋亡;Bid;Bcl-xL
Abstract： 目的:探讨细胞凋亡及相关蛋白的表达与小肠腺癌发生发展的关系.方法:研究包括35例正常小肠(空肠)组织和7例手术切除的小肠腺癌组织,临床资料查阅病历;用TUNEL法检测细胞凋亡;用免疫组织化学检测相关蛋Bid和Bcl-xL的表达.结果:小肠腺癌的凋亡指数(apoptotic index,AI)明显低于正常小肠组织(0.29% vs 15.78%,t=6.51,P<0.01):蛋白Bid在小肠腺癌的表达低于正常小肠组织(28.57% vs 77.14%,P<0.05);蛋白Bcl-xL在小肠腺癌的表达高于正常组织(86.7 1% vs 34.29%,P<0.05):Bid/Bcl-xL≥1的样本数在小肠腺癌低于正常小肠(14.29% vs 80.00%,P<0.01).相关性分析显示AI和蛋白Bid的免疫组织化学得分呈正相关(r=0.368,P<0.05),但与蛋白Bcl-xL的免疫组织化学得分之间缺乏相关性(r=0.017,P>0.05).结论:细胞凋亡水平的降低;蛋白Bid的低表达和Bid/Bcl-xL比值的降低可能在小肠肿瘤的发生和发展过程中发挥重要的作用.
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