Journal
ADVANCED HEALTHCARE MATERIALS
Volume 12, Issue 17, Pages -Publisher
WILEY
DOI: 10.1002/adhm.202202770
Keywords
chronic wounds; dressing materials; photo-responsiveness; secondary damage; trauma reconstruction
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Dressing change is crucial for wound healing, but it can cause secondary damage and delay recovery. A non-contact refreshable hydrogel dressing that allows fast and remote-controllable dressing change has been developed for chronic wounds. In a diabetic murine model, this dressing considerably improves wound healing within 2-3 weeks, facilitates epithelialization, collagen deposition, cell proliferation, and inflammatory regulation, showing promising therapeutic efficiency.
Dressing change is a significant and inevitable process during wound healing. Possible secondary damage caused through dressing removal may impose a great threat on wound recovery, thus resulting in healing delays and ultimately a higher cost of hospitalization. Hence, a non-contact refreshable dressing with an ease of operation is of great desire, especially for chronic wounds where a long-term and repeated dressing change would be performed. Herein, an all-light-operated hydrogel dressing that would achieve a fast and remote-controllable dressing change (30 s for gelation/4 min for dissolution upon light irradiation) for chronic wounds is presented. In a diabetic murine model, substantially improved wound healing within 2-3 weeks is observed due to attenuated secondary damage during repeated dressing changes. Moreover, a promising facilitation of the healing processes of epithelialization, collagen deposition, cell proliferation, and inflammatory regulation is also detected, representing a synergistic effect of the photo-responsive hydrogel dressing for therapeutic efficiency.
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