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Oncogene expression in the peri-articular osteophytes.
Temitope O Alonge1, Paul Rooney, Olusola O Oni
1Department of Surgery, College of Medicine, University of Ibadan, University College Hospital, Ibadan, Nigeria. alonget@skannet.com
West African Journal of Medicine
|December 14, 2004
Summary
Peri-articular osteophytes show active proliferation, indicated by c-myc oncogene expression in chondrocytes. Basal chondrocytes express c-fos oncogene, suggesting transformation potential, making osteophytes a possible source for cartilage repair tissue.
Area of Science:
- Orthopedics
- Oncology
- Cell Biology
Background:
- Peri-articular osteophytes are associated with osteoarthritis and represent a form of neoplastic repair tissue.
- Understanding the cellular behavior of osteophytes is crucial for potential therapeutic applications.
Purpose of the Study:
- To investigate the proliferative and reparative potentials of peri-articular osteophytes.
- To evaluate the expression of c-myc, c-jun, and c-fos oncogenes in osteophytic tissue.
Main Methods:
- Osteophyte sections from osteoarthritis patients undergoing knee arthroplasty were analyzed.
- Immunohistochemistry was used to detect c-myc, c-jun, and c-fos oncogene expression.
- Normal articular cartilage and breast carcinoma served as negative and positive controls, respectively.
Main Results:
- Chondrocytes throughout the osteophyte cartilage mantle expressed c-myc oncogene.
- Basal chondrocytes in the deep layer of the osteophyte cartilage mantle expressed c-fos oncogene.
- No expression of c-myc, c-jun, or c-fos was observed in normal articular cartilage.
Conclusions:
- C-myc expression indicates active proliferation of osteophytic chondrocytes.
- C-fos expression in basal chondrocytes suggests potential for cellular transformation.
- Peri-articular osteophytes possess proliferative capacity and may serve as a source for osteochondral grafting.