1. Flexible Organic Photovoltaic‐Powered Hydrogel Bioelectronic Dressing With Biomimetic Electrical Stimulation for Healing Infected Diabetic Wounds
- Author
-
Yi‐Wei Hu, Yu‐Heng Wang, Fang Yang, Ding‐Xin Liu, Guang‐Hao Lu, Sheng‐Tao Li, Zhi‐Xiang Wei, Xiang Shen, Zhuang‐De Jiang, Yi‐Fan Zhao, Qian Pang, Bai‐Yang Song, Ze‐Wen Shi, Shareen Shafique, Kun Zhou, Xiao‐Lian Chen, Wen‐Ming Su, Jia‐Wen Jian, Ke‐Qi Tang, Tie‐Long Liu, and Ya‐Bin Zhu
- Subjects
conducting hydrogel ,electrical stimulation ,flexible photovoltaic cells ,proteomics ,wound dressing ,Science - Abstract
Abstract Electrical stimulation (ES) is proposed as a therapeutic solution for managing chronic wounds. However, its widespread clinical adoption is limited by the requirement of additional extracorporeal devices to power ES‐based wound dressings. In this study, a novel sandwich‐structured photovoltaic microcurrent hydrogel dressing (PMH dressing) is designed for treating diabetic wounds. This innovative dressing comprises flexible organic photovoltaic (OPV) cells, a flexible micro–electro–mechanical systems (MEMS) electrode, and a multifunctional hydrogel serving as an electrode–tissue interface. The PMH dressing is engineered to administer ES, mimicking the physiological injury current occurring naturally in wounds when exposed to light; thus, facilitating wound healing. In vitro experiments are performed to validate the PMH dressing's exceptional biocompatibility and robust antibacterial properties. In vivo experiments and proteomic analysis reveal that the proposed PMH dressing significantly accelerates the healing of infected diabetic wounds by enhancing extracellular matrix regeneration, eliminating bacteria, regulating inflammatory responses, and modulating vascular functions. Therefore, the PMH dressing is a potent, versatile, and effective solution for diabetic wound care, paving the way for advancements in wireless ES wound dressings.
- Published
- 2024
- Full Text
- View/download PDF