目的 探讨p63蛋白、芳香酶P450 (P450arom)及类固醇生成因子1(SF-1)在子宫内膜息肉中的表达变化及其在子宫内膜息肉发病机制中的作用.方法 选择2012年6月至10月在复旦大学附属妇产科医院就诊、因异常阴道流血或宫腔占位等行宫腔镜手术、术后病理诊断为子宫内膜息肉的患者30例;同时经患者及医院伦理委员会同意,取息肉周围内膜组织20例及正常子宫内膜组织25例.采用免疫组化SP法及实时荧光定量PCR技术检测p63、P450arom及SF-1蛋白和mRNA的表达情况(蛋白的表达以组织化学评分表示).结果 (1)蛋白表达:p63、P450arom及SF-1蛋白在子宫内膜息肉组织中的表达均显著升高(P＜0.05),评分分别为(0.8±0.5)、(1.2±1.1)、(1.1±0.8)分,正常子宫内膜组织中均无3种蛋白的表达(评分均为0).(2)mRNA表达:P450arom mRNA的表达水平在子宫内膜息肉组织中高于息肉周围内膜、正常子宫内膜组织,分别为0.274±0.082、0.105±0.052、0.105±0.065,分别比较,差异均有统计学意义(P＜0.01);而SF-1 mRNA(分别为0.105±0.049、0.053±0.043)及p63mRNA(分别为0.261±0.052、0.180±0.018)的表达水平在子宫内膜息肉与息肉周围内膜之间比较,差异均无统计学意义(P＞0.05).结论 p63、P450arom及SF-1可能是促进子宫内膜息肉形成的重要因子.%Objective To investigate the expression and signification of p63,aromatase P450 (P450arom) and steroidogenic factor-1 (SF-1) in endometrial polyp,and to explore its role in the pathogenesis of endometrial polyp.Methods Specimen were collected from hysteroscopic resection,pathologically confirmed endometrial polyp specimens of 30 cases of endometrial polyp and the adjoining endometrium around endometrial polyp in 20 cases,endometrial tissue of normal control group of 25 patients.Immunohistochemistry SP method and real-time PCR technology were used to detect the three groups in the expression of p63,P450arom and SF-1 protein and gene.Results P450arom gene (0.274±0.082) and protein (1.2± 1.1) expression in endometrial polyp was significantly higher than the adjoining endometrium and normal endometrium (P＜0.05); the expression of SF-1 protein (1.1 ±0.8) and p63 protein (0.8±0.5) were also higher in the endometrial polyp than the other two control groups (P＜0.05); while the expression of SF-1 mRNA (0.105±0.049 versus 0.053±0.043) and p63 mRNA (0.261±0.052 versus 0.180± 0.018) in endometrial polyp had no significant difference between endometrial polyp and the adjoining endometrial (P＞0.05).Conclusion p63,P450arom and SF-1 may play a role in the formation of endometrial polyp.
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