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Different expression of Bcl-2 in diffuse and intestinal type stomach carcinomas
Oncology Reports
|May 20, 2011
Summary
Bcl-2 expression is common in stomach cancer, particularly in intestinal types. While related to differentiation, Bcl-2 staining does not aid in clinical staging for these patients.
Area of Science:
- Oncology
- Molecular Biology
- Pathology
Background:
- Stomach carcinomas exhibit varied expression of apoptosis-related proteins.
- Bcl-2, an anti-apoptotic protein, plays a role in cancer development and progression.
Purpose of the Study:
- To investigate the immunohistochemical expression of Bcl-2 in stomach carcinomas.
- To correlate Bcl-2 expression with clinicopathological features, including tumor type and staging.
Main Methods:
- Immunohistochemical staining using a monoclonal antibody against Bcl-2.
- Analysis of 40 stomach carcinoma samples and four cell lines.
- Correlation with pTNM staging and tumor grading.
Main Results:
- Bcl-2 expression was observed in 60% of stomach carcinomas.
- Positive Bcl-2 staining was significantly higher in intestinal type (87%) versus diffuse type (44%) carcinomas.
- No significant correlation was found between Bcl-2 expression and pTNM staging or tumor grade.
Conclusions:
- Bcl-2 expression is a frequent event in stomach carcinomas.
- Bcl-2 expression is associated with more differentiated (intestinal type) tumors.
- Bcl-2 detection is not a direct indicator for clinical staging in stomach cancer.
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