title: [Comparative study of expression of p21 and c-myc protein in hepatocellular carcinoma with pericarcinomatous liver tissue].
abstract: 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) 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.
authors.affiliation: Department of Pathology, Hunan Medical University, Changsha.
authors.forename: D
authors.initials: D
authors.lastname: Feng
authors.forename: R
authors.initials: R
authors.lastname: Cheng
authors.forename: Y
authors.initials: Y
authors.lastname: Yan
mesh_terms: D000328:Adult; D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000378:metabolism*; D005260:Female; D015870:Gene Expression; D006801:Humans; D007150:Immunohistochemistry; D008099:Liver / Q000378:metabolism*; D008113:Liver Neoplasms / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D015689:Oncogene Protein p21(ras) / Q000096:biosynthesis*; D016271:Proto-Oncogene Proteins c-myc / Q000096:biosynthesis*
chemical_list: D016271:Proto-Oncogene Proteins c-myc; D015689:Oncogene Protein p21(ras)