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Small intestinal adenocarcinoma in common marmosets (Callithrix jacchus)
A D Miller1, J A Kramer, K C Lin
1New England Regional Primate Research Center, Harvard Medical School, One Pine Hill Drive, Southborough, MA 01760, USA. Andrew_Miller@hms.harvard.edu
Veterinary Pathology
|May 13, 2010
Summary
Small intestinal adenocarcinoma, rare in humans and nonhuman primates, was studied in common marmosets. These tumors are the leading cause of death in aged marmosets, offering a potential model for human disease.
Area of Science:
- Veterinary Pathology
- Comparative Oncology
- Primate Neoplasia
Background:
- Small intestinal adenocarcinomas are rare in humans and nonhuman primates.
- Their pathogenesis is thought to resemble colorectal carcinoma.
- This study focuses on a rare occurrence in common marmosets.
Purpose of the Study:
- To characterize small intestinal adenocarcinoma in common marmosets.
- To evaluate their potential as an animal model for human disease.
Main Methods:
- Retrospective analysis of necropsy records.
- Histologic, immunohistochemical, and molecular evaluation of tumors.
- Detection of specific bacteria and viruses.
Main Results:
- Small intestinal adenocarcinoma is the most common cancer in aged marmosets.
- Tumors predominantly occurred in the proximal small intestine.
- Histologic and immunohistochemical features showed similarities to human cases, with notable E-cadherin and beta-catenin expression changes.
Conclusions:
- Small intestinal adenocarcinoma is a significant neoplastic disease in aged common marmosets.
- These marmoset tumors share key characteristics with human small intestine carcinoma.
- Marmosets represent a valuable model for studying human small intestinal adenocarcinoma.
