Abstract
Chronic wounds cause serious health and economic burdens on patients and society. Herein, a wireless and flexible smart wound dressing was developed for matrix metalloproteinase-9 (MMP-9) monitoring and antimicrobial treatment toward chronic wound management. The highly sensitive radio frequency MMP-9 sensor was realized based on a bioresponsive hydrogel with bioactive sequences of the arginyl-glycyl-aspartic acid peptide. Taking advantage of the flexible inductive-capacitive (LC) circuit and bioresponsive hydrogel, the wireless and wearable smart wound dressing offered an efficient strategy for in-situ wound analysis. Besides, the controlled release of silver nanoparticles (AgNPs) from the degradable hydrogel exhibited significant antimicrobial efficacy against typical bacteria in wound infection including Escherichia coli and Staphylococcus aureus. The analysis of MMP-9 in wound exudate from diabetic foot ulcer (DFU) patients demonstrated good accuracy cross-validated with gold-standard fluorescent measurements, providing great potential for personalized wound management.
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