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Published on: December 10, 2010
Effect of psoralen on bone formation
Ricky W K Wong1, A Bakr M Rabie
1Biomedical and Tissue Engineering, Prince Philip Dental Hospital, University of Hong Kong, 34 Hospital Road, Sai Ying Pun, Hong Kong. fyoung@hkucc.hku.hk
Summary
Psoralen in a collagen matrix significantly increased new bone and bone cell formation in rabbit bone defects compared to collagen alone. This suggests psoralen-collagen matrix is a promising bone graft material.
Area of Science:
- Biomaterials Science
- Orthopedic Research
- Regenerative Medicine
Background:
- Bone defects require effective grafting materials for repair.
- Collagen matrices are used in bone regeneration.
- Psoralen's osteogenic potential requires further investigation.
Purpose of the Study:
- To evaluate the efficacy of psoralen in a collagen matrix for bone regeneration in vivo.
- To compare new bone and bone cell formation between psoralen-collagen matrix and collagen matrix alone.
Main Methods:
- Surgical creation of standardized parietal bone defects in New Zealand White rabbits.
- Grafting defects with psoralen-collagen matrix, collagen matrix alone, or leaving empty.
- Histological assessment and quantitative image analysis of new bone formation and osteoblasts at 14 days.
Main Results:
- Psoralen-collagen matrix demonstrated a 454% increase in new bone formation compared to collagen matrix alone.
- Significantly higher numbers of bone-forming osteoblasts were observed in the psoralen group.
- No new bone formation occurred in empty defects.
Conclusions:
- Psoralen incorporated into a collagen matrix effectively enhances local bone formation in vivo.
- Psoralen-collagen matrix shows potential as a novel bone graft material for orthopedic applications.
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