摘要目的 探讨p40(△Np63)与p504s联合检测在前列腺良恶性病变鉴别诊断中的价值,并与p63表达进行对比.方法 应用免疫组织化学MaxVision法检测92例前列腺增生、67例前列腺癌组织中p40、p63、p504s的表达.结果 p40、p63在前列腺增生组织中的阳性率分别为95.7％(88/92)、87.0％(80/92)(x2=4.381,P＜ 0.05),其中p63较p40更多见断续表达及弱表达;p40、p63在前列腺癌组织中均未见表达,但p63在癌细胞内出现胞质异常着色占17.9 ％(12/67);联合检测p40和p504s诊断前列腺增生及前列腺癌的特异度均高达100％.结论 p40对前列腺基底细胞具有更高的敏感性,联合检测p40和p504s对鉴别前列腺良恶性病变具有很高的实用价值.

abstractsObjective To investigate the expression of p40 (ANp63),p504s and their diagnostic value in benign and malignant lesions of the prostate,also to compare with the expression of p63.Methods The expression of p40 (ANp63),p63 and p504s in 92 cases of benign prostatic hyperplasia and 67 cases of prostatic carcinoma were detected by immunohistochemical MaxVision method.Results p40 and p63 were positive in 95.7 ％ (88/92) and 87.0 ％ (80/92) of benign prostatic hyperplasia,and the intermittent and low expression in p63 were more common than those in p40.The positive expression rate of p40 was obviously higher than that of p63 in benign prostatic hyperplasia (x2 =4.381,P ＜ 0.05).Both p40 and p63 showed no expression in prostatic carcinoma,but p63 appeared with abnormal cytoplasmic staining in many cases of cancer cells,which was 17.9 ％ (12/67).The specificity of combined detection of p40 and p504s in the diagnosis of benign prostatic hyperplasia and prostate carcinoma was as high as 100 ％.Conclusion p40 is more sensitive than p63 in prostate basal cells.Combined detection of p40 and p504s is valuable to distinguish poorly differentiated benign prostatic hyperplasia from prostatic carcinoma.