Abstract
Electrospinning is a versatile technique to make biomimetic and nanostructured scaffolds for skin tissue engineering. In this study we have electrospun and characterized chitosan (C)–poly(vinyl alcohol) (PVA) blend nanofibers as dermal substitutes and compared with 2D C–PVA films. The in vitro characterization of the C–PVA nanofibers and 2D films were evaluated using mouse 3T3 fibroblast cells and our results demonstrated that the cells adhered and proliferated on the surface of C–PVA nanofibers. In our animal studies, the implantation of C–PVA nanofibers along with topical administration of growth factor R-Spondin 1 on full thickness wounds created on rats showed 98.6% wound closure after two weeks post-surgery. The catalase and superoxide dismutase activity of the healing tissue was significantly higher in the groups treated with topical administration of growth factor and C–PVA nanofibers (p < 0.05). Thus these C–PVA nanofibers along with novel growth factor are promising new biomaterials that could be used as dermal substitutes for accelerated wound healing.
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