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Updated: Jul 9, 2026
07:33
In vitro Organoid Culture of Primary Mouse Colon Tumors
Published on: May 17, 2013
ER-beta expression in large bowel adenomas: implications in colon carcinogenesis
A Di Leo1, M Barone, E Maiorano
1Section of Gastroenterology, Department of Emergency and Organ Transplantation (D.E.T.O.), Bari, Italy. a.dileo@gastro.uniba.it
Summary
Oestrogen receptor-beta (ERB) is significantly reduced in pre-cancerous colorectal lesions, correlating inversely with cell proliferation. This suggests ERB agonists may help prevent colon cancer.
Area of Science:
- Endocrinology
- Gastroenterology
- Oncology
Background:
- Oestrogen receptor-beta (ERB) plays a suggested role in human colon carcinogenesis.
- Limited data exist on ERB expression in colorectal pre-cancerous lesions.
Purpose of the Study:
- To evaluate ERB expression in colorectal adenomas and normal colon tissue.
- To assess the correlation between ERB expression, proliferative activity, and apoptosis.
Main Methods:
- Analysis of adenomatous tissue from 25 patients and normal tissue from 25 controls.
- Evaluation of ERB expression, colonocyte proliferation (PCNA positivity), and apoptosis.
Main Results:
- Significantly reduced ERB expression in adenomatous tissue compared to normal mucosa (10.1% vs. 44.2%).
- Oestrogen receptor-alpha expression remained unchanged.
- Increased cell proliferative activity (PCNA positivity) in adenomas, doubling the PCNA/apoptosis ratio.
- Inverse correlation between ERB and PCNA expression in adenomas (r=-0.81).
Conclusions:
- Demonstrates a significant reduction in ERB expression during the pre-cancerous phase of colon carcinogenesis.
- Suggests a potential role for selective ERB agonists in colorectal cancer prevention.
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