胃粘膜异型增生和胃癌中Survivin基因的表达及相关性研究

Expression of survivin gene in the dysplasia of gastric mucous epithelium and the gastric carcinoma and its significance

目的 :探讨凋亡相关基因survivin在胃癌和胃粘膜异型增生组织中的表达 ,及其与bcl 2、p53和PCNA表达的相关性。方法 :利用免疫组织化学SP法检测 60例胃癌、3 0例胃粘膜异型增生和 8例正常胃粘膜中survivin、bcl 2、p53和PCNA的表达。 结果 :survivin在轻中重度异型增生和癌组织中阳性表达率分别是 10 %、13 %、80 %和 82 %。轻中重度异型增生survivin阳性表达率明显低于重度异型增生和癌 (P <0 0 1)而在重度异型增生与癌间无显著性差异 (P >0 0 5)。survivin阳性表达与胃癌组织学类型无关 (P >0 0 5) ,与浸润深度、淋巴结转移和生存期关系密切 (P <0 0 1、P <0 0 1、P <0 0 5)。survivin表达与bcl 2、p53和PCNAⅢ～Ⅳ级呈正相关 (P <0 0 1)。结论 :survivin基因在胃癌的发生、发展中起重要作用 ,检测survivin基因蛋白可对胃癌预后分析和进一步治疗提供有效依据 ,survivin与bcl 2和

Purpose:To study the expression of survivin a nd its relationship with the expression of bcl-2,p53,PCNA in the dysplasia of gastric mucous epithelium and gastric carcinoma.Methods:The expression of survivin,bcl-2,p53,PCNA was detected in 60 cases of gastric carcinoma, 30 cases of dysplasia of gastric mucous epithelim and 8 cases of normal gastric mucous tissue by using immunohistochemical SP method. Results:The positive rates of survivin were 10%,13%,80% and 82%, respectively, in mild, moderate and svere dysplasia and gastric carcinoma. The positive rates of survivin in mild and moderate dy splasia were significantly lower than in severe dysplasia and carcinoma (P<0 01). No significant difference was observed for survivin expression level getween severe dysplasia and carcinoma (P>0 05). There was a relationship between survivin gene expression with the invasive depth of gastric carcinoma. lymph node metastases and survival stage (P<0 01,P<0 01,P<0 05). The expression of survivin was positively correlated with that of bcl-2,p53,PCNA. Conclusions:This experiment suggests that survivin gene may play a role in the oncogenesis and progression of gastric carcinoma. Detection of the gene products has positive effects on early diagnosis and treatment of gastric carcinoma.