p27^kip1和ki67蛋白在不同类型胃息肉及胃癌中的表达及意义

目的研究p27^kip1和ki67蛋白在不同类型胃息肉中的表达及其与胃息肉和胃癌的相互关系。方法应用免疫组化法分别检测正常胃黏膜、增生性胃息肉、腺瘤性胃息肉及胃癌组织中p27^kip1和ki67蛋白的表达。结果p27^kip1蛋白在正常胃黏膜组、增生性胃息肉组、腺瘤性胃息肉组和胃癌组中表达的阳性率分别为90．00％、70．00％、65．00％和30．43％，胃癌组明显低于其他三组。Ki67蛋白在正常胃黏膜组、增生性胃息肉组、腺瘤性胃息肉组和胃癌组中表达的阳性率分别为10．00％、15．00％、45．00％和73．33％，胃癌组明显高于其他三组，腺瘤性胃息肉组明显高于正常胃黏膜组和增生性胃息肉组，差异均有统计学意义（P〈0．05）。p27^kip1和ki67蛋白在胃息肉中的表达无关（rs=-0．093，P〉0．05）。结论检测胃息肉中p27^kip1和ki67蛋白的表达，有助于早期诊断胃息肉癌变并判断其预后。

Expression and significance of p27kip1 and Ki67 proteins in various types of gastric polyp and carcinoma

Objective To study the expression of p27kip1 and Ki67 proteins in various types of gastric polyp and the relationship be-tween gastric polyp and gastric carcinoma (CA:). Methods The expression of p27kip1 and Ki67 proteins were detected in normal gastric mu-cosa, hyperplasie polyp, adenomatons polyp, and carcinoma by S-P immunohistochemical staining. Results In the normal gastric mucosa,hyperplasie polyp, adenomatous polyp and gastric carcinoma, the expression rate of the p27kip1 protein was 90. 00% ,70. 00% ,65.00% and 30. 43%, respectively. The positive rate of p27kip1 protein in gastric cancer was significantly lower than that in other tissues. The rate of Ki67 protein expression in those tissues was 10. 00%, 15.00%, 45.00%, and 73.33%, respectively. The positive rate of Ki67 protein in gastric cancer was significantly higher than that in other tissues. And the positive rate of Ki67 in adenomatous polyp was significantly higher than that in the normal gnstric mucosa and hyperplasic polyp. There were significant differences among them(P <0.05). There was no correlation between the expression of p27kip1 and Ki67 proteins in gastric polyp(rs=-0. 093, P >0. 05). Conclusion Detection of p27kip1 and Ki67 proteins in gastric polyp was very helpful in early diagnosis and prognosis of GC.