c-erbB-2过表达、nm23低表达与结直肠癌预后不良的关系

目的　探讨结直肠癌c erbB 2、CD4 4v6、nm2 3基因蛋白表达与临床病理特征的相关性及意义。方法　用免疫组织化学SP法检测了 92例结直肠癌组织c erbB 2、CD4 4v6、nm2 3蛋白表达 ,并对其中随访 10年以上的 2 8例作了生存分析。结果　c erbB 2和CD4 4v6的表达均与国际抗癌联盟(UICC)分期有关 (P <0 0 5 ) ,而且c erbB 2表达还与显著的瘤周淋巴样细胞浸润有关 (P <0 0 5 )。在随访 10年以上的 2 8例中 ,单因素分析显示 :患者生存率与组织分型、UICC分期、肿瘤生长方式、瘤周淋巴样细胞浸润以及c erbB 2、CD4 4v6、nm2 3表达均有关。但经多因素Cox比例风险分析 ,只有UICC分期、c erbB 2和nm2 3表达具有独立的预后意义。结论　除UICCⅢ、Ⅳ期之外 ,c erbB 2过表达和nm2 3表达减少似乎可作为结直肠癌预后不良的可行性指标

Overexpression of c-erbB-2 and hypoexpression of nm23 relating to poor prognosis of colorectal carcinoma

OBJECTIVE: To investigate the relationship between expression of c-erbB-2, CD44v6 and nm23 gene proteins and the clinicopathological features of colorectal carcinomas. METHODS: Immunohistochemical technique was adopted to detect the protein expression of c-erbB-2, CD44v6 and nm23 genes in 92 cases of colorectal carcinomas. Of the 92 cases, 28 cases were followed up for more than 10 years, in which the prognosis was analyzed. RESULTS: Expression of c-erbB-2 and CD44v6 was correlating with UICC staging (P < 0.05), and c-erbB-2 was associated with prominent peritumoral lymphocytic infiltration (P < 0.05). In the 28 cases with followed-up data, univariant analysis revealed that the survival rate was correlated with histological grading, UICC staging, tumor growth pattern, peritumoral lymphocytic infiltration, and expression of c-erbB-2, CD44v6 and nm23. However, Cox stepwise proportional hazards analysis showed that only UICC staging, c-erbB-2 and nm23 status retained significant independently in prospecting prognosis. CONCLUSIONS: Besides UICC III and IV stage, overexpression of c-erbB-2 and decreased expression of nm23 are considered acceptable as the parameters in predicting of poor prognosis in colorectal carcinoma.