Abstract
A novel hydrogel (HA-az-F127 hydrogel) formed by reacting hydrazide modified hyaluronic acid (HAAD) and benzaldehyde terminated F127 triblock copolymers (BAF127) was developed in this work. The hydrogel with dynamic covalent chemically and micellar physically double-cross-linked networks exhibited rapid gelation and shear thinning properties. Besides, the hydrogel possessed functions, such as adaptable mechanical strength, self-healability, liquid-absorption, or drainage and tissue adhesion, which are important for wound treatment. Studies on cytocompatibility and histopathology by 3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyl tetrazolium bromide tests, live/death staining, and cell counting kit 8 assay demonstrated excellent biocompatibility of the hydrogels. After it was applied in the deep partial-thickness burn model, the hydrogel contributed effectively in promoting burn wound repair. Therefore, the HA-az-F127 hydrogel combined multiple functions in one system, demonstrating potential application in promoting burn wound healing.
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