An injectable thermosensitive pluronic F127 loaded-nanohydroxyapatite / Polydopamine for promoting sciatic nerve repair after crush injury.

Colloids Surf B Biointerfaces

Shanghai Frontiers Science Center of Drug Target Identification and Delivery, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China; Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, and School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China; National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, Shanghai 200240, China; Inner Mongolia Research Institute of Shanghai Jiao Tong University, Hohhot 010070, China. Electronic address:

Published: January 2025

Peripheral nerve injury (PNI) remains an urgent issue due to its huge financial burden and high rate of disability. Here, an injectable HAP/PDA thermosensitive pluronic F-127 (PF-127) hydrogel is proposed for peripheral nerve repair. We investigated the surface characteristics of HAP/PDA and evaluated biocompatibility, cellular proliferation, differentiation, and apoptosis in vitro. After injecting the hydrogel into the injured site of rats, we recorded the recovery of motor function and judged the degree of nerves through electrophysiological and morphological changes. The hydrogel was found to accelerate the nerve regeneration. Collectively, the HAP/PDA thermosensitive PF-127 hydrogel has potential in promoting sciatic nerve repair.

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http://dx.doi.org/10.1016/j.colsurfb.2024.114324DOI Listing

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