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23. Control-released Alpha-lipoic acid-loaded PLGA microspheres enhance bone formation in type 2 diabetic rat model.

Author

Zhang ZZ, Song L, Zhang ZY, and Lv MM

Abstract

Since diabetes lead to alterations in bone metabolism with reductions in bone mineral content and delayed bone formation, the most effective method for bone regeneration in diabetes remains to be determined. In this study, type 2 diabetes were successfully induced via a high-fat diet and low-dose streptozotocin intraperitoneal injection. Excess reactive oxygen species (ROS) has been implicated in diabetes mellitus. Overexpression of ROS can lead to oxidative stress and subsequently to H 2 O 2 -mediated impaired proliferation and delayed cellular differentiation. As a result, antioxidant alpha-lipoic acid (ALA)-loaded poly (lactic-co-glycolic acid) (PLGA) microspheres were fabricated using the emulsion solvent evaporation method, and a sustained and controlled release of ALA was observed up to 27 days. It was demonstrated that biodegradable PLGA microspheres loaded with ALA acted as ROS scavengers and partially recover the mesenchymal stem cell proliferation and differentiation. The bone formation of ALA loaded scaffolds in rat cranial bone defects were greater than the prime three-dimensional collagen scaffold. These results suggest the application of ALA loaded PLGA microsphere exhibit good bioactivity and bone forming ability in diabetes., Competing Interests: None., (IJCEP Copyright © 2017.)

Published
2017

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