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JOURNAL ARTICLE

In vitro and in vivo evaluation of chitosan scaffolds combined with simvastatin-loaded nanoparticles for guided bone regeneration

Yan Xue, Mingyao Wu, Zongren Liu, Jinhua Song, Shuyu Luo, Hongjie Li, Yuan Li, Lichun Jin, Binbin Guan, Mingli Lin, Fuyu Chen, Chenxin Jin, Deping Liu, Yanqiu Li, Xu Zhang
Journal of Materials Science. Materials in Medicine 2019 April 12, 30 (4): 47
30980130
The objective of this study was to fabricate and characterize chitosan combined with different amounts of simvastatin-loaded nanoparticles and to investigate their potential for guided bone regeneration in vitro and in vivo. Different SIM-CSN formulations were combined into a chitosan scaffold (SIM-CSNs-S), and the morphology, simvastatin release profile, and effect on cell proliferation and differentiation were investigated. For in vivo experiments, ectopic osteogenesis and the critical-size cranial defect model in SD rats were chosen to evaluate bone regeneration potential. All three SIM-CSNs-S formulations had a porous structure and exhibited sustained simvastatin release. CSNs-S showed excellent degradation and biocompatibility characteristics. The 4 mg SIM-CSNs-S formulation stimulated higher BMSC ALP activity levels, demonstrated significantly earlier collagen enhancement, and led to faster bone regeneration than the other formulations. SIM-CSNs-S should have a significant effect on bone regeneration.

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