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胃癌及癌旁组织中TRAIL、DcR1、DR4、caspase3与Bcl-2表达的研究

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摘要 目的:探讨TRAIL选择性诱导肿瘤细胞凋亡,而不损伤正常组织的可能机制。方法:采用免疫组化S-P法,检测38例胃癌及癌旁组织,14例正常胃粘膜组织中TRAIL及DcR1、DR4受体、caspase3、Bcl-2在胃癌及癌旁组织中的蛋白表达情况,结合其临床病理学资料,分析它们之间的相关性。结果TRAIL、DcR1、DR4、caspase3与Bcl-2在正常胃粘膜、癌旁5cm组织、癌组织上皮中阳性表达差异有显著性(P<0.05),其中TRAIL、DcR1、DR4、caspase3、Bcl-2癌组织上皮与正常胃粘膜阳性表达差异均有统计意义(P<0.05),TRAIL、DcR1、DR4、Bcl-2在癌组织上皮与癌旁5cm组织上皮中的表达差异有显著性(P<0.05);TRAIL、DcR1、DR4、caspase3与Bcl-2在正常胃粘膜与癌旁5cm组织上皮中的达差异均无显著性(P>0.05);TRAIL与Bcl-2高中分化癌组织中与低分化癌组织中的表达差异均有显著性(P<0.05);DcR1、DR4、caspase3与肿瘤分化程度无关;TRAIL、DcR1、DR4、caspase3与Bcl-2在癌组织中的表达与性别、年龄、分期、肿瘤位置、肿瘤大小及组织类型无关(P>0.05)。结论:DcR1、DR4、caspase3与Bcl-2与TRAIL作用机制相关,其中DcR1与Bcl-2可能是抑制因素,而DR4、caspase3是TRAIL作用环节的关键指标。
出处 《兵团医学》 2012年第1期3-6,共4页 Journal of BingTuan Medicine
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