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Published on: May 11, 2014
Aberrant crypt foci: endoscopic assessment and cell kinetics characterization
Pedro Figueiredo1, Maria Donato, Marta Urbano
1Department of Gastroenterology, Hospitais da Universidade de Coimbra, Avenida Bissaya Barreto, 3000-075 Coimbra, Portugal. pedro.n.figueiredo@clix.pt
International Journal of Colorectal Disease
|September 5, 2008
Summary
Aberrant crypt foci (ACF) likely precede colorectal neoplasia. Increased ACF numbers may help predict the presence of colorectal neoplastic lesions, aiding early detection.
Area of Science:
- Gastroenterology
- Oncology
- Pathology
Background:
- Aberrant crypt foci (ACF) are recognized preneoplastic lesions in animal models of colorectal cancer.
- Their role in human colorectal carcinogenesis and predictive potential for neoplasia remain under investigation.
Purpose of the Study:
- To investigate the involvement of ACF in human colorectal cancer development.
- To determine if ACF can predict the presence of colorectal neoplasia.
Main Methods:
- A study involving 182 patients (2003-2005) with varying colorectal conditions (adenoma, carcinoma, no lesions, polyps).
- Rectal ACF numbers were quantified via colonoscopy.
- Immunohistochemistry was used to assess proliferation and apoptosis indexes in ACF, normal mucosa, and cancerous tissue.
Main Results:
- Patients with rectal neoplasia exhibited a significantly higher mean number of rectal ACF.
- Lower apoptosis indexes in ACF correlated with older age and the presence of colorectal carcinoma or adenoma.
- Higher proliferation indexes were observed in ACF of younger patients with colorectal neoplasia.
Conclusions:
- Aberrant crypt foci are likely precursors to colorectal neoplasia.
- ACF may serve as a valuable biomarker for predicting the presence of colorectal neoplastic lesions.
