Relation between stage, grade, proliferation, and expression of p53 and CD44 in adenomas and carcinomas of the colorectum

被引:34
作者
Jackson, PA
Green, MA
Pouli, A
Hubbard, R
Marks, CG
Cook, MG
机构
[1] Royal Surrey County Hospital, Guildford
关键词
CD44; MIB-1; p53; adenoma; carcinoma; colorectum;
D O I
10.1136/jcp.48.12.1098
中图分类号
R36 [病理学];
学科分类号
100104 ;
摘要
Aims-To investigate the changes in and relations among p53, CD44 and MIB-1 expression in adenocarcinomas of the colorectum and to determine whether these changes are progressive across the adenoma-carcinoma sequence. Methods-Expression of p53 protein, CD44 adhesion molecule and MIB-1 proliferation antigen was detected using immunohistochemistry in 68 colorectal carcinomas and 32 colorectal adenomas. The staining characteristics were compared with degree of dysplasia in adenomas, and differentiation and Dukes' stage in carcinomas. Results were analysed and assessed using Spearman's rank correlation and independent t tests. Results-p53 staining was present in some adenomas and correlated with the degree of dysplasia. There was significantly more staining in carcinomas than adenomas and significant correlation between staining and Dukes' stage. CD44 staining was maximal in adenomas, diminished in carcinomas and was minimal in metastasising carcinomas. There was an inverse correlation between p53 and CD44 expression across the adenoma-carcinoma-metastasising carcinoma sequence. MIB-1 expression was highest in carcinomas but did not correlate with either p53 or CD44 expression. Conclusions-There are progressive changes in p53, CD44 and MIB-1 expression in adenomas and carcinomas. A combination of these tests may prove useful in assessing which patients with adenomas are at greatest risk of progressing to carcinoma.
引用
收藏
页码:1098 / 1101
页数:4
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