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Preparation of Highly Swelling/Antibacterial Cross-Linked -Maleoyl-Functional Chitosan/Polyethylene Oxide Nanofiber Meshes for Controlled Antibiotic Release.

Chen CK, Liao MG, Wu YL, Fang ZY, Chen JA. Preparation of Highly Swelling/Antibacterial Cross-Linked -Maleoyl-Functional Chitosan/Polyethylene Oxide Nanofiber Meshes for Controlled Antibiotic Release. Molecular pharmaceutics. 2020 Sep 8; 17(9):3461-3476.

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Abstract:

Due to the cell affinity of chitosan (CS) and the hydrophilicity of polyethylene oxide (PEO), CS/PEO composited nanofiber meshes (NFMs) have been extensively used as wound healing dressings for skin tissue regeneration. Nonetheless, numerous innate drawbacks of the NFM system such as the use of toxic spinning solvents and cross-linkers, moderate water regain capacity, and lack of triggered release function significantly hampered their biomedical applications. In order to enhance their performances in promoting cell growth and preventing bacterial infection, highly swelling cross-linked -maleoyl-functional chitosan (MCS)/PEO NFMs have been developed as the next-generation CS/PEO NFM system through an acid-free electrospinning process and a UV-irradiated cross-linked treatment without the use of aldehyde-containing cross-linkers. With the simultaneous introduction of ethylene oxide chains and disulfide bonds in the cross-linkages, this new NFM system displays enhanced swelling capability, antibacterial ability, triggered antibiotic release, and high biocompatibility. These biomedical merits enable the new NFM systems to be utilized as tissue scaffolds, especially for functional wound healing dressings.





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