Expression of beta-catenin in human colorectal adenoma and carcinoma / 浙江大学学报·医学版
Journal of Zhejiang University. Medical sciences
;
(6): 121-124, 2004.
Article
in Chinese
| WPRIM
| ID: wpr-341927
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the expression of beta-catenin and its significance in colorectal neoplasms.</p><p><b>METHODS</b>Tissue specimens of normal colorectal mucosa, mucosa adjacent to carcinoma, colorectal adenoma and adenocarcinoma were examined for beta-catenin with immunohistochemistry.</p><p><b>RESULTS</b>Beta-catenin was mainly expressed in the cytomembrane of normal mucosa and mucosa adjacent to cancer (the positive rates were 94.6% and 86.5%, respectively) and also in the cytoplasm (the positive rates were 38.7% and 55.0%, respectively), while its expression was negative in the cell nucleus. In adenoma and adenocarcinoma, beta-catenin was mainly expressed in the cytoplasm (the positive rates were 85.1%,and 93.7%, respectively) and partially in the cell nucleus (the positive rates were 12.8% and 23.4%, respectively). Compared with normal mucosa and mucosa adjacent to cancer, the expression of beta- catenin in the cytomembrane of adenoma and adenocarcinoma was significantly lower (P<0.05), while its expression in the cytoplasm and cell nucleus of adenoma and adenocarcinoma was significantly higher (P<0.05). The positive rates of cytoplasm in highly-and moderately differentiated adenocarcinoma were significantly higher than that in poorly-differentiated adenocarcinoma (the positive rates were 100%, 95.5% and 68.8%, respectively). Beta-catenin expression rate in cytoplasm was correlated with Dukes'stages of adenocarcinoma, which was significantly lower in stage A than in stage B/C.</p><p><b>CONCLUSION</b>The expression of beta-catenin is significantly correlated with differentiation and Dukes'stages of colorectal carcinoma and it can be used as an indicator for the prognosis of colorectal carcinoma.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Prognosis
/
Immunohistochemistry
/
Colorectal Neoplasms
/
Adenocarcinoma
/
Adenoma
/
Trans-Activators
/
Chemistry
/
Cytoplasm
/
Cytoskeletal Proteins
Type of study:
Prognostic study
Limits:
Humans
Language:
Chinese
Journal:
Journal of Zhejiang University. Medical sciences
Year:
2004
Type:
Article
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