alexa Acellular Hydrogels for Regenerative Burn Wound Healing: Translation from a Porcine Model.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Tissue Science & Engineering

Author(s): Shen YI, Song HH, Papa AE, Burke JA, Volk SW,

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Abstract Currently available skin grafts and skin substitutes for healing following third-degree burn injuries are fraught with complications, often resulting in long-term physical and psychological sequelae. Synthetic treatment that can promote wound healing in a regenerative manner would provide an off-the-shelf, non-immunogenic strategy to improve clinical care of severe burn wounds. Here, we demonstrate the vulnerary efficacy and accelerated healing mechanism of a dextran-based hydrogel in a third-degree porcine burn model. The model was optimized to allow examination of the hydrogel treatment for clinical translation and its regenerative response mechanisms. Hydrogel treatment accelerated third-degree burn wound healing by rapid wound closure, improved re-epithelialization, enhanced extracellular matrix remodeling, and greater nerve reinnervation, compared with the dressing-treated group. These effects appear to be mediated through the ability of the hydrogel to facilitate a rapid but brief initial inflammatory response that coherently stimulates neovascularization within the granulation tissue during the first week of treatment, followed by an efficient vascular regression to promote a regenerative healing process. Our results suggest that the dextran-based hydrogels may substantially improve healing quality and reduce skin grafting incidents and thus pave the way for clinical studies to improve the care of severe burn injury patients.
This article was published in J Invest Dermatol and referenced in Journal of Tissue Science & Engineering

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