Journal
TISSUE ENGINEERING PART A
Volume 16, Issue 12, Pages 3779-3790Publisher
MARY ANN LIEBERT, INC
DOI: 10.1089/ten.tea.2010.0299
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Funding
- Hi-Tech Research and Development Program of China (863 Program) [2006AA02A128]
- Nature Science Foundation of China [30670667, 30770585]
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Bone marrow mesenchymal cells (MSCs) have attracted increasing research interest due to their possible use as support cells for nerve tissue-engineering approaches. We developed a novel design of tissue-engineered nerve grafts consisting of a chitosan/poly(lactic-co-glycolic acid) (PLGA)-based neural scaffold included with autologous MSCs. The graft was used as an alternative to nerve autografts for bridging 50-mm-long gaps in dog sciatic nerve, and the repair outcome at 6 months after nerve grafting was evaluated by a combination of electrophysiological assessment, FluoroGold retrograde tracing, and histological investigation to regenerated nerve tissue and reinnervated target muscle. The experimental results indicated that introduction of autologous MSCs to the chitosan/PLGA-based neural scaffold promoted sciatic nerve regeneration and functional recovery, demonstrating significant efficacy that was, to a certain degree, close to that by nerve autografting, a gold standard for treating large peripheral nerve gaps, and better than that by grafting with the chitosan/PLGA-based scaffold alone.
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