Korean J Thorac Cardiovasc Surg.
2004 Jun;37(6):474-481.
Formation of an Intestine-Cartilage Composite Graft for Tracheal Reconstruction
- Affiliations
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- 1Department of Thoracic and Cardiovascular Surgery, College of Medicine, Catholic University of Daegu, Korea. jheon@snu.ac.kr
- 2Department of Anesthesiology, College of Medicine, Catholic University of Daegu, Korea.
- 3Biomedical Research Institute, Kyungpook National University, Korea.
- 4Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Korea.
Abstract
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BACKGROUND: Tracheal transplantation is necessary in patients with extensive tracheal stenosis, congenital lesions and other oncologic conditions but bears many critical problems compared to other organ transplantations. The purpose of this study was to develop intestine-cartilage composite grafts for potential application in tracheal reconstruction by free intestinal graft.
MATERIAL AND METHOD: Hyaline cartilage was harvested from trachea of 2 weeks old New Zealand White Rabbits. Chondrocytes were isolated and cultured for 8 weeks. Cultured chondrocytes were seeded in the PLGA scaffolds and mixed in pluronic gel. Chondrocyte bearing scaffolds and gel mixture were embedded in submucosal area of stomach and colon of 3 kg weighted New Zealand White Rabbits under general anesthesia. 10 weeks after implantation, bowels were harvested for evaluation.
RESULT: We identified implantation site by gross examination and palpation. Developed cartilage made a good frame for shape memory. Microscopic examinations included special stain s howed absorption of scaffold and cartilage formation even though it was not fully matured.
CONCLUSION
Intestine-cartilage composite graft could be applicable in the future as tracheal substitute and should be further investigated.
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