人乳头瘤病毒16/18感染与膀胱癌组织中Rb和p16蛋白表达的相关性分析

目的探讨人乳头瘤病毒(HPV)16/18感染与膀胱癌组织中Rb和p16蛋白表达的相关性,分析HPV与膀胱癌发病之间的关系。方法以40例膀胱癌标本、40例正常膀胱组织标本为研究对象,采用免疫组化法检测HPV16/18E6及E7基因编码的蛋白(E6/E7蛋白)、RB、p16蛋白的表达情况,分析其与膀胱癌病理分级、国际抗癌联盟(UICC)分期、复发与否间的相关关系。结果膀胱癌标本中HPV16/18E6/E7蛋白、RB、p16阳性率分别为65.0%、47.5%、42.5%,与正常膀胱组织标本对应阳性率22.5%、92.5%、87.5%对比,差异均有统计学意义(P0.05);HPV16/18E6/E7蛋白、Rb、p16蛋白的表达均与膀胱癌病理分级、分期相关(P0.05),与肿瘤复发无关(P0.05);HPV16/18E6/E7蛋白与Rb及p16蛋白的表达均无显著相关(P0.05),Rb与p16蛋白的表达呈显著负相关(P0.05)。结论 HPV 16/18感染与膀胱癌的发生及发展有关,但其作用机制可能与Rb及p16蛋白的表达异常无关。

Correlation analysis of human papilloma virus 16/18 infection and the expression of Rb and p16 protein in bladder cancer tissue

Objective To investigate the correlation between human papilloma virus(HPV) 16/18 infection and the expression of Rb and p16 protein in bladder cancer tissue,and to analyze the relationship between HPV infection and the incidence of bladder cancer.Methods The expression of HPV16/18 E6 and E7 gene encoded protein,RB and p16 were detected by immunohistochemical method in 40 cases of bladder cancer and 40 cases of normal bladder tissues,and the correlation between them and pathological grading,stage of international union of cancer(UICC),whether recurrence or not after receiving surgery was analyzed.Results In bladder cancer tissues,HPV16/18 E6 and E7 gene encoded protein,RB and p16 positive rates were 65%,47.5%,42.5%,compared with the positive rate of normal bladder tissue samples(22.5%,92.5%,87.5%),the differences were statistically significant(P<0.05).The expression of HPV16/18 E6 and E7 gene encoded protein,Rb and p16 proteins were associated with pathological grading and staging of bladder cancer(P<0.05),but were not related to the tumor recurrence(P>0.05).The expression of HPV16/18 E6 and E7 gene encoded protein and Rb,p16 protein were not significantly correlated(P>0.05),The expression of Rb and p16 protein were negatively correlated(P<0.05).Conclusion HPV 16/18 infection is related to the occurrence and development of bladder cancer,but its mechanism might not be related to the abnormal expression of Rb and p16 protein.