A Cell-Free Collagen Type I Device for the Treatment of Focal Cartilage Defects

被引:21
|
作者
Gavenis, Karsten [1 ]
Schmidt-Rohlfing, Bernhard [2 ]
Andereya, Stefan [1 ]
Mumme, Torsten [1 ]
Schneider, Ulrich [3 ]
Mueller-Rath, Ralf [1 ]
机构
[1] Aachen Univ Hosp, Dept Orthoped Surg, D-52074 Aachen, Germany
[2] Aachen Univ Hosp, Dept Trauma Surg, D-52074 Aachen, Germany
[3] Arthro Nova Clin, Tegernsee, Germany
关键词
Cartilage repair; Human articular chondrocyte; Collagen gel plug; Tissue engineering; MATRIX SYNTHESIS; GEL; CHONDROCYTES; VITRO; KNEE; PROLIFERATION;
D O I
10.1111/j.1525-1594.2009.00776.x
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
The purpose of this study was to evaluate the potential value of a cell-free collagen type I gel plug for the treatment of focal cartilage defects. Cellular migration and proliferation was addressed in vitro, and the formation of repair tissue in a nude mouse-based defect model. A cell-free plug made of collagen type I was placed in the center of an incubation plate. Surrounding space was filled with a collagen type I gel (Arthro Kinetics, Esslingen, Germany) seeded with 2 x 10(5) human articular chondrocytes/mL gel. After cultivation for up to 6 weeks in vitro, samples were subject to histological and immunohistochemical staining and gene expression analysis. Subsequently, chondral defects of human osteochondral blocks were treated with the plug, and specimens were cultivated subcutaneously in nude mice for 6 weeks. The repair tissue was evaluated macroscopically, and collagen type II production was investigated immunohistochemically. In vitro, morphology of immigrated cells did not show any differences, as did collagen type II gene expression. After 4 weeks, the plug was homogeneously inhabited. After 6 weeks of cultivation in nude mice, collagen gel plug treatment led to a macroscopically excellent repair tissue. Histological staining revealed a tight bonding, and the collagen gel plug started to be remodeled. We conclude that the novel collagen gel plug device offers an environment favorable for the migration of articular chondrocytes and leads to a good-quality repair tissue in the nude mouse model. The arthroscopic transplantation of a collagen gel plug may be one option in the treatment of focal cartilage defects.
引用
收藏
页码:79 / 83
页数:5
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