Journal
ANNALS OF BIOMEDICAL ENGINEERING
Volume 32, Issue 3, Pages 430-434Publisher
SPRINGER
DOI: 10.1023/B:ABME.0000017545.84833.7c
Keywords
biomechanics (molecular, cellular and tissue)/cell; and tissue engineering; modeling and simulation in bioengineering/animal; model; miomaterials and biological interfaces/musculoskeletal joint systems
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This study explores the use of mesenchymal stem cells (MSCs) for intervertebral disc regeneration. We used an in vivo model to investigate the feasibility of exogenous cell delivery, retention, and survival in the pressurized disc space. MSC injection into rat coccygeal discs was performed using 15% hyaluronan gel as a carrier. Injections of gel with or without MSCs were performed. Immediately after injection, fluorescently labeled stem cells were visible on sections of cell-injected discs. Seven and 14 days after injection, stem cells were still present within the disc, but their numbers were significantly decreased. At 28 days, a return to the initial number of injected cells was observed, and viability was 100%. A trend of increased disc height compared to blank get suggests an increase in matrix synthesis. The results indicate that MSCs can maintain viability and proliferate within the rat intervertebral disc.
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