摘要
目的:探讨错配修复蛋白hMLH1和hMSH2在正常子宫内膜、不典型增生内膜及子宫内膜癌中的表达,及其与子宫内膜癌发生过程中的意义。方法:免疫组织化学法(sp)检测正常子宫内膜14例、不典型增生子宫内膜27例、子宫内膜癌31例中的hMLH1和hMSH2蛋白的表达情况。结果:在正常、不典型增生和癌组织中hMLH1的阳性表达率分别为100%(14/14)、81%(22/27)和61%(19/31),组间差异有显著性(P<0.05),hMLH1的核表达率分别为14%(2/14)、19%(5/27)和19%(6/31);hMSH2的胞质表达率分别为100%(14/14)、78%(21/27)、81%(25/31),不典型增生组和癌组显著低于正常组(P<0.05);hMSH2的核表达率分别为43%(6/14)、59%(16/27)、68%(21/31),癌组显著高于正常组(P<0.05)。结论:错配修复蛋白hMLH1和hMSH2的细胞内表达缺失可提示子宫内膜的异常增生,同时检测两种蛋白的表达及表达位置有助于子宫内膜癌的早期发现。
Objective To investigate the expressions and significances of mismatch repair proteins (hMLH1 and hMSH2) in endometrial carcinoma. Methods The expressions of hMLH1 and hMSH2 in 14 samples of normal endometrium (NE), 27 samples of atypical hyperplasia endometrium (AHE), and 31 samples of endometrial carcinoma (EC) were detected by immunohistochemistry. Results The expression rates of hMLH1 in NE, AHE, and EC were 100% (14/14), 81% (22/27), and 61% (19/31) (EC and AHE vs. NE, P 〈 0.05); and 14% (2/14), 19% (5/ 27), and 19% (6/31) in nucleus, respectively; those of hMSH2 were 100% (14/14), 78% (21/27), and 81% (25/31), (EC and AHE vs. NE, P〈 0.05); and 43% (6/14), 59% (16/27), and 68% (21/31) in nucleus, respectively (EC vs. NE, P 〈 0.05). Conclusion The deletion of hMSH2 and hMLH1 in endometrium may predict atypical hyperplasia. Combined detection of the expressions and express-location of both hMSH2 and hMLH1 is benefit to early diagnosis of endometrial carcinoma.
出处
《实用医学杂志》
CAS
北大核心
2009年第23期3923-3924,共2页
The Journal of Practical Medicine
基金
辽宁省自然科学基金资助(编号:2050962)
关键词
子宫内膜肿瘤
错配修复蛋白
免疫组化
Endometrial neoplasms
Mismatch repair proteins
Immunohistochemistry