胆管癌组织中高迁移率族蛋白B1与突变型p53的表达及临床意义

目的 探讨高迁移率族蛋白B1(HMGB1)和突变型p53(mutp53)在胆管癌组织中的表达及临床意义.方法 应用免疫组织化学方法检测47例胆管癌组织与25例正常胆管组织中HMGB1和mutp53的表达情况,并分析两者的表达与胆管癌临床病理特征之间的关系.结果 HMGB1与mutp53在胆管癌组织中的阳性表达率分别为78.72％ (37/47)、63.83％(30/47),而在正常胆管组织中的阳性表达率为12.00％(3/25)、4.00％(1/25),差异均有统计学意义(P＜0.01).HMGB1与mutp53在胆管癌组织中的阳性表达与患者的性别、年龄、胆红素水平、肿瘤直径大小及肿瘤所在部位均无相关性(P＞0.05);而与肿瘤的分化程度、淋巴结转移、神经侵犯及肿瘤的TNM分期密切相关,差异均有统计学意义(P＜0.05).HMGB1与mutp53在胆管癌组织中的表达呈正相关(r=0.574,P＜0.05).结论 HMGB1与mutp53在胆管癌组织中均呈高表达.HMGB1与mutp53在胆管癌的发生、发展、浸润及转移过程中起到重要作用.

Expression and clinical significance of HMGB1 and mutant p53 in cholangiocarcinoma tissues

Objective To investigate the expressions and clinical significance of HMGB1 and mutp53 in bile duct carcinoma tissue.Methods The expressions of HMGB1 and mutp53 were detected by immunohistochemistry in 47 cases cholangiocarcinoma tissue and 25 cases normal biliary duct tissue,and their correlation with clinicopathological parameters of cholangiocarcinoma was analyzed.Results The expression of HMGB1 and mutp53 was positive in 78.72％ (37/47) and 63.83％ (30/47) respectively of the cases with cholangiocarcinoma tissue,and 12.00％ (3/25) and 4.00％ (1/25)respectively of the cases in normal biliary duct tissue(all P ＜0.01).The expression of HMGB1 and mutp53 in cholangiocarcinoma tissue was relating to degree of tumor differentiation,lymph node metastasis,perineural invasion and TNM-staging(all P ＜ 0.05),and no relation to age,gender,serum bilirubin level,metastasis of tumor and site of tumor(all P ＞0.05).The expression of HMGB1 was positively correlated with that of mutp53 in bile duct carcinoma tissue(r =0.574,P ＜ 0.05).Conclusion The expressions of HMGB1 and mutp53 were increased in cholangiocarcinoma tissue,both of them play critical role for the occurrence,development,invasion and metastasis of cholangiocarcinoma.