A wound-friendly antibacterial hyaluronic acid dressing with on-demand removability for infected wound healing

• Published in: Biomaterials research Vol. 27; no. 1; p. 38
• Main Authors: Hu, Datao, Wen, Jinpeng, Zhao, Xinxin, Liu, Kailai, Zhang, Yuchen, Bu, Yizhuo, Wang, Ke
• Format: Journal Article
• Language: English
• Published: England BioMed Central Ltd 01.05.2023; BioMed Central; American Association for the Advancement of Science (AAAS); 한국생체재료학회
• Subjects: Angiogenesis; Antibacterial; Antibacterial activity; Antibacterial agents; Antimicrobial agents; Care and treatment; Collagen; Cytotoxicity; Dressings; Electrostatic properties; Hyaluronic acid; Injectable; Methods; On-demand removal; Patient compliance; Polylysine; Rheology; Scanning electron microscopy; Sodium chloride; Staphylococcus infections; Statistical analysis; Wound dressing; Wound healing; Wounds and injuries; 의공학; United States > US; China; On-demand removal; Injectable; Wound dressing; Antibacterial
• ISSN: 1226-4601; 2055-7124; 2055-7124
• DOI: 10.1186/s40824-023-00340-7

Antibacterial activity and on-demand removability are key characteristics governing the effectiveness of clinic wound dressing. However, the excellent tissue adhesion of new dressings is often overemphasized without a detailed discussion of dressing replacement. Besides, the inherent antibacterial ability of dressings is beneficial for promoting the healing of infected wound. Therefore, we rationally design an injectable antibacterial wound dressing with on-demand removability to accelerate infected wound healing. We design this wound dressing with a simple and feasible method based on the electrostatic self-assembly of hyaluronic acid and ε-polylysine. We investigated the efficacy of this dressing in terms of its microtopography, rheology, self-healing performance, adhesive ability, antimicrobial, hemostatic, on-demand removal properties, and wound healing promotion through various tests. The prepared dressing possesses injectability, self-healing ability and antibacterial activity, showing NaCl-triggered on-demand dissolution due to the disruption of electrostatic interactions. When used as dressings for healing full-thickness wounds, it could effectively accelerate wound healing by killing bacteria, downregulating inflammation, promoting collagen deposition, enhancing keratinocyte migration and angiogenesis due to its excellent adhesion ability, favorable hemostatic property, and potent antibacterial performance. All results indicate that this is a simple and practical dressing for clinical application. This strategy provides a novel idea for developing on-demand removal dressings with antibacterial and injectable properties.