Repair of Articular Cartilage Defect with Cell-Loaded Nano-HA/PLGA Composites

Abstract:

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A novel porous composite scaffold of nano-HA/poly (lactic-co-glycolic) (PLGA) was fabricated by solvent casting/particulate leaching method. Chondrocytes were isolated from the knee articular joints of a rabbit, and then seeded in the scaffolds. The cell-loaded scaffolds were cultured in vitro for 5 days before implantation. Full-thickness articular cartilage defects were created in rabbits, and filled with and without the cell-loaded nano-HA/PLGA scaffolds. The implants were harvested after in vivo incubation of 2 and 5 weeks. Cartilaginous tissues were observed at defects repaired with the cell-loaded scaffolds, while only fibrous tissues were found for the control groups. The repaired tissues were evaluated histologically by hematoxylin and eosin staining. Results revealed that nano-HA/PLGA composite scaffolds facilitated adheration of cells in vitro, and the nano-HA particles could prevented the scaffolds from collapsing and promoted the formation of cartilaginous tissue in vivo.

Info:

Periodical:

Key Engineering Materials (Volumes 330-332)

Main Theme:

Edited by:

Xingdong Zhang, Xudong Li, Hongsong Fan, Xuanyong Liu

Pages:

1185-1188

DOI:

10.4028/www.scientific.net/KEM.330-332.1185

Citation:

H. Lu et al., "Repair of Articular Cartilage Defect with Cell-Loaded Nano-HA/PLGA Composites", Key Engineering Materials, Vols. 330-332, pp. 1185-1188, 2007

Online since:

February 2007

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Price:

$35.00

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