胃腺癌中p53、E-cadherin的表达及其预后因素分析

目的 研究胃腺癌组织中p53、E-cadherin的表达,分析它们和临床病理参数对预后的影响.方法 采用组织芯片和免疫组化检测150例胃腺癌中p53、E-cadherin的表达,分析它们和临床病理参数对预后的影响.单因素分析用Kaplan-Meier法计算累积生存率并比较患者术后平均生存时间,多因素分析用COX回归.结果 150例胃腺癌中p53阳性率为31.3%;E-cadherin阳性率为91.3%.随访到的74例胃腺癌患者1年生存率为83.8%,3年生存率为70.3%,5年生存率为63.5%.单因素分析年龄、分化程度、Laurén分类、浸润深度、淋巴结状况、pTNM分期是影响胃腺癌预后的因素;多因素分析p53、年龄、淋巴结状况为影响胃腺癌预后的独立因素(P<0.05).结论 p53、年龄、分化程度、Laurén分类、浸润深度、淋巴结状况和pTNM分期是影响胃腺癌预后的因素,而E-cadherin和组织学分类不是影响胃腺癌预后的因素.

Expression of p53 and E-cadherin in gastric adenocarcinoma and their relationship with prognosis

Purpose To investigate the protein expression of p53 and E-cadherin in gastric adenocarcinoma and the effects of them and the clinicopathological parameters on prognosis of patients.Methods Expression of p53,E-cadherin in 150 cases of gastric adenocarcinoma was detected by tissue microarray and immunohistochemistry.The effects of them and the clinicopathological parameters on the prognosis of patients were studied by Kaplan-Meier method to calculate and compare the cumulative survival rate and postoperative mean survival time.Multivariate analysis was also performed by COX regression.Results The positive rate of p53 and E-cadherin expression in 150 cases of gastric adenocarcinoma was 31.3% and 91.3%,respectively.74 cases were followed up, and the 1-,3-,and 5-year survival rates were 83.8%,70.3% and 63.5%,respectively.The invasion, lymph node status and pTNM stages were prognostic factors;multivariate analysis revealed that p53,age and lymph node status were independent prognostic invasion, lymph node status and pTNM stages are important prognostic factors in gastric adenocarcinoma. Nevertheless, E-cadherin and histological classification are not prognostic factors.