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Title: [Repair of articular cartilage defect with homogeneous chondrocytes combined with pluronic]. Author: Lin JH, Wu ZY, Chen L. Journal: Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi; 2003 May; 17(3):255-8. PubMed ID: 12822365. Abstract: OBJECTIVE: To investigate the possibility of repairing the cartilage cartilage defect with homogeneous chondrocytes combined with Pluronic. METHODS: Homogeneous cartilage chondrocytes of adult New Zealand rabbits were harvested and cultured in vitro, which were marked by 3H-TdR and mixed with Pluronic. The medial or lateral condyle defects were made (phi 4 mm, extending down to the calcified zone) in 20 rabbits. In the experimental group, the right defects were repaired by homogeneous chondrocytes combined with Pluronic; in the control group, the left defects were repaired by Pluronic only or were left un-repaired. The animals were sacrificed in the 4th, 8th and 16th weeks after operation respectively. The repair results were observed and the cell source of repair tissue was distinguished. RESULTS: In the experimental group, the cartilage defects were repaired by the cartilage-like tissue after 8 weeks of operation; the defects were completely filled with mature cartilage tissue, which integrated smoothly with articular cartilage 16 weeks later. In the control group, only a small amount fibrous tissues were seen on the surface of defects. Autoradiographic assessment showed that the repair cells came from the implants, but not from self-chondrocytes. CONCLUSION: It is a good way to repair articular cartilage defects with homograft of tissue engineering cartilage. It is a convenient method to mark with 3H-TdR to discriminate the resource of the repair cells.[Abstract] [Full Text] [Related] [New Search]