Intraarticular Injection of Allogenic Mesenchymal Stem Cells has a Protective Role for the Osteoarthritis / 中华医学杂志(英文版)
Chinese Medical Journal
;
(24): 2516-2523, 2015.
Article
in English
| WPRIM
| ID: wpr-315304
ABSTRACT
<p><b>BACKGROUND</b>Researchers initially proposed the substitution of apoptotic chondrocytes in the superficial cartilage by injecting mesenchymal stem cells (MSCs) intraarticularly. This effect was termed as bio-resurfacing. Little evidence supporting the treatment of osteoarthritis (OA) by the delivery of a MSC suspension exists. The aim of this study was to investigate the effects of injecting allogenic MSCs intraarticularly in a rat OA model and to evaluate the influence of immobility on the effects of this treatment.</p><p><b>METHODS</b>We established a rat knee OA model after 4 and 6 weeks and cultured primary bone marrow MSCs. A MSC suspension was injected into the articular space once per week for 3 weeks. A subgroup of knee joints was immobilized for 3 days after each injection, while the remaining joints were nonimmobilized. We used toluidine blue staining, Mankin scores, and TdT-mediated dUTP-biotin nick end labeling staining to evaluate the therapeutic effect of the injections. Comparisons between the therapy side and the control side of the knee joint were made using paired t-test, and comparisons between the immobilized and nonimmobilized subgroups were made using the unpaired t-test. A P value < 0.05 was considered significant.</p><p><b>RESULTS</b>The three investigative approaches revealed less degeneration on the therapy sides of the knee joints than the control sides in both the 4- and 6-week groups (P < 0.05), regardless of immobilization. No significant differences were observed between the immobilized and nonimmobilized subgroups (P > 0.05).</p><p><b>CONCLUSIONS</b>Therapy involving the intraarticular injection of allogenic MSCs promoted cartilage repair in a rat arthritis model, and 3-day immobility after injection had little effect on this therapy.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Therapeutics
/
Cartilage, Articular
/
Osteoarthritis, Knee
/
Cell Biology
/
Mesenchymal Stem Cell Transplantation
/
Mesenchymal Stem Cells
/
Injections, Intra-Articular
/
Methods
Type of study:
Prognostic study
Limits:
Animals
Language:
English
Journal:
Chinese Medical Journal
Year:
2015
Type:
Article
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