Document Detail

Articular cartilage repair using an intra-articular magnet and synovium-derived cells.
MedLine Citation:
PMID:  21064159     Owner:  NLM     Status:  Publisher    
The purpose of this study was to investigate the chondrogenic potential of magnetically labeled synovium-derived cells (M-SDCs) and examine whether M-SDCs could repair the articular cartilage using an intra-articular magnet after delivery to the lesion. Synovium-derived cells (SDCs) were cultured from the synovium of a rat knee, and were magnetically labeled with ferumoxides. M-SDCs were examined with a transmission electron microscope. A pellet culture system was used to evaluate the chondrogenic potential of M-SDCs in a magnetic field. In a rat model, allogeneic M-SDCs were injected into the knee after we made an osteochondral defect on the patellar groove and implanted an intra-articular magnet at the bottom of the defect. We histologically examined the defects at 48 h, 4 weeks, 8 weeks, and 12 weeks after treatment. Electron microscopy showed the transfection of ferumoxides into SDCs. The pellet cultures revealed the chondrogenic potential of M-SDCs in a magnetic field. M-SDCs accumulated in the osteochondral defect at 48 h after treatment, and we confirmed the regeneration of the articular cartilage at 4 weeks, 8 weeks, and 12 weeks after treatment using an intra-articular magnet. We demonstrated that articular cartilage defects could be repaired using an intra-articular magnet and M-SDCs. We believe that this system will be useful to repair human articular cartilage defects. © 2010 Orthopaedic Research Society Published by Wiley Periodicals, Inc. J Orthop Res.
Junji Hori; Masataka Deie; Takaaki Kobayashi; Yuji Yasunaga; Seiichi Kawamata; Mitsuo Ochi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2010-11-9
Journal Detail:
Title:  Journal of orthopaedic research : official publication of the Orthopaedic Research Society     Volume:  -     ISSN:  1554-527X     ISO Abbreviation:  -     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8404726     Medline TA:  J Orthop Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan.
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