p21和c-myc蛋白在肝细胞癌与癌旁肝组织中表达的对比研究

本文用连续切片免疫组化法检测了肝细胞癌及癌旁组织ｐ２１和ｃ－ｍｙｃ蛋白的表达。ｐ２１和ｃ－ｍｙｃ蛋白在肝癌及癌旁组织的阳性率分别为５３．３％和９６．７％；４０％和８６．７％；两者表达率均以癌旁组织为高（Ｐ＜０．０１）。ｐ２１和ｃ－ｍｙｃ蛋白阳性信号形态呈浆膜和／或核型；其表达均以近癌组织的癌旁肝细胞为强，肝硬变结节尤甚。本文结果进一步支持ｒａｓ和ｃ－ｍｙｃ癌基因异常激活和表达与肝细胞癌发生具相关性的观点。

COMPARATIVE STUDY OF EXPRESSION OF p21 AND c myc PROTEIN IN HEPATOCELLULAR CARCINOMA WITH PERICARCINOMATOUS LIVER TISSUE

Expression of p21 and c myc protein in hepatocellular carcinomas and their surrounding liver tissue was detected on serial sections by immunohistochemical method. The results showed that the positive rates of p21 expression were 53.3% (16/30) and 96.7% (29/30) in hepatocellular carcinomas and pericarcinomatous liver tissue, and 40% (12/30) and 86.7% (26/30) for c myc protein expression respectively. Their incidences in pericarcinomatous liver tissue were higher than that in cancer tissue (P<0.01). The patterns of p21 and c myc protein in cells were cytoplasm, membrane and/or nuclear types. Their expression was more intensive in pericarcinomatous hepatocytes, especially in liver cirrhosis nodes. The results indicate that abnormal activiation and expression of oncogene ras and c myc may be related to hepatocellular carcinogenesis.