宫颈上皮内瘤变及宫颈癌中TS、PCNA的表达及其意义

目的:探讨胸苷酸合成酶(thymidylate synthase,TS)在宫颈上皮内瘤变(cervical intraepithelial neoplasia,CIN)及宫颈癌发生、发展中的作用及与预后的关系。方法:采用免疫组化SP法检测TS、增殖细胞核抗原(proliferating cell nuclearantigen,PCNA)在慢性宫颈炎、宫颈上皮内瘤变及宫颈癌中的表达。结果:与慢性宫颈炎相比,CIN及宫颈癌中TS的表达率明显增高(P值分别为0.006、0.004);而CIN与宫颈癌组比较,差异无统计学意义(P=0.780);CIN各组之间差异亦无显著性。在宫颈癌中,TS的表达与临床分期、淋巴结转移有关(P值分别为0.033、0.015),与细胞分化程度及肌层浸润深度无关(P值分别为0.343、0.350)。PCNA在CIN和宫颈癌中的表达率明显高于慢性宫颈炎(P值分别为0.029、0.000),在宫颈癌中的表达率也明显高于CIN(P值为0.000)。在CIN和宫颈癌中,TS和PCNA的表达存在关联性(Pearson列联系数=0.319 6,χ2=8.371,P<0.005)。结论:TS作为一种促细胞增殖的蛋白与宫颈病变的发生有一定关系,对预测宫颈癌的预后有一定参考价值。

Expressions and clinical significances of TS and PCNA in cervical intraepithelial neoplasia and cervical carcinoma

Objective:To explore the role of thymidylate synthase(TS) in occurrence and development of cervical intraepithelial neoplasia(CIN) and cervical carcinoma and its relationship with prognosis. Methods:Immunohistochemical SP method was used to detect the expression levels of TS and proliferating cell nuclear antigen(PCNA) in chronic cervicitis,CIN and cervical carcinoma. Results:Compared with chronic cervicitis group,the expression rates of TS in CIN group and cervical carcinoma group increased significantly(P...