P27蛋白在胞浆中的表达与鼻咽癌临床病理学特征的关系

目的评估p27蛋白在胞浆中表达与鼻咽癌患者临床病理学特征的关系。方法利用免疫组化检测P27蛋白在鼻咽癌组织
与鼻咽组织之间的表达。利用统计学方法分析P27蛋白在鼻咽癌与鼻咽组织胞浆中表达差异以及P27蛋白在胞浆中表达与与
鼻咽癌患者临床病理参数之间的相关性。结果免疫组化结果显示，P27蛋白是一个核浆表达蛋白。与正常鼻咽组织相比，P27
蛋白在鼻咽癌组织胞浆中的表达明显下调（P=0.047），且下调表达与T分级（P=0.033）呈负相关。此外，P27蛋白在鼻咽癌组织
胞浆中的表达与淋巴结转移和临床分期虽然无显著意义，但也展现了明显负相关趋势（P=0.157，P=0.090）。结论P27蛋白在细
胞胞浆中过低表达可能促进鼻咽癌的发生发展，且其可作为预测鼻咽癌患者预后的不利因素之一。

Cytoplasmic expression of P27 protein and its correlation with clinicopathologic features of nasopharyngeal carcinoma

Objective To evaluate the correlation of p27 protein expression in the cytoplasm with the clinicopathologic features
of nasopharyngeal carcinoma (NPC). Methods Immunohistochemistry was employed to examine P27 protein expression in the
cytoplasm of NPC samples and nasopharyngeal (NP) tissue samples. The differential expression of P27 protein between NPCs
and NPs and the correlation of cytoplasmic P27 protein expression with the clinicopathologic parameters of NPC patients was
analyzed. Results Immunohistochemistry indicated significantly down-regulated t p27 protein expression in NPC tissues
compared to that in NP tissues (P=0.047). The reduction of P27 expression was inversely correlated with T classification of NPC
(P=0.033). Although cytoplasmic p27 protein expression was not significantly correlated with lymph node metastasis (P=0.157)
or clinical stages of NPC (P=0.090), an obvious trend of inverse correlations between them was noted. Conclusion
Down-regulated cytoplasmic p27 protein expression may promote the carcinogenesis of NPC and can be an unfavorable
prognostic factor for survival of NPC patients.