Abstract
The purpose of this experiment was to prepare a new biological dressing for skin defect healing by electrospinning. Membranes consisting of egg white (EW) with 12% polyvinyl alcohol (PVA) solution (v/v, 60EW/40PVA, 50EW/50PVA, 40EW/60PVA) were obtained by electrospinning. The biological properties of the resulting fibrous membranes were tested in vitro and in vivo. Scanning electron microscopy (SEM) showed that the EW/PVA nanofiber membranes had a uniformly porous and smooth fibrous structure. The fiber thickened with increasing EW proportion. X-ray diffraction (XRD) showed that crosslinking improved the crystallinity of the composite fiber films. Fourier transform infrared (FT-IR) spectroscopy showed that PVA and EW existed independently in the composite fiber membranes after crosslinking. Mechanical tests showed that the tensile modulus and tensile strength of the fibrous membranes increased significantly after crosslinking. In vitro degradation experiments showed that crosslinking improved the stability of the EW/PVA nanofiber membranes in water. Cytotoxicity and cell proliferation tests proved the good biocompatibility of the fibrous membranes, with 60EW/40PVA significantly promoting cell proliferation. A full-thickness skin defect rat model confirmed that 60EW/40PVA significantly enhanced full-thickness skin wound healing and regeneration. This experiment verified the feasibility of using the EW/PVA composite material to prepare electrospun fiber dressings and promote skin defect repair and regeneration.
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Acknowledgements
This work was funded by the National Natural Science Foundation of China (81960416), Department of Science and Technology of Guizhou Province ([2020]6013, [2020]4Y137, [2010]3166), and Department of Science and Technology of Guiyang City (2019-1-3, 2019-1-38). Thanks to Dr. Yi Zhang and Dr. Liping Shu for providing an effective discussion in this study.
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Tao Lu, Qiang Zou and Chuan Ye conceived and designed the experiments. Tao Lu performed the experiments. Kunzhi Zhu, Daizhu Yuan and Minxian Ma contributed helpful discussion during the experiment. Kunzhi Zhu provided effective assistance in the supplementary data of the revised manuscript. All authors have been involved in drafting the manuscript. Chuan Ye reviewed and revised the manuscript. All authors agreed to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
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Lu, T., Zou, Q., Zhu, K. et al. Electrospun egg white/polyvinyl alcohol fiber dressing to accelerate wound healing. J Polym Res 28, 67 (2021). https://doi.org/10.1007/s10965-021-02422-3
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DOI: https://doi.org/10.1007/s10965-021-02422-3