Silver–Catechol Dynamic Redox Chemistry Provides Hydrogel Dressings with Sustained Antioxidant and Antibacterial Activity for Chronic Wound Care

). In a diabetic rat model, NPs-PSH demonstrates enhanced wound-healing efficacy by promoting epithelialization, reducing inflammation, and enhancing vascular regeneration, without frequent dressing changes (wear time up to 7 days). This study may provide a paradigm for the development of long-acting therapeutic strategies and undisturbed wound healing.