🌐 I. Quick Overview of the Research 💡 Diabetic foot ulcers are hampered by multiple pathological barriers including endogenous bioelectric disturbance, infection, inflammation and oxidative stress. In this study, an ionic thermoelectric device-based hydrogel dressing is fabricated. It harvests energy from the natural temperature difference between skin and air to reconstruct wound bioelectric signals and simultaneously remodel the wound microenvironment. A series of in vitro functional validations are carried out, and its repair efficacy is investigated using an infected wound model in diabetic rats.

🧪 II. Core Innovative Breakthroughs A triple-synergy strategy is established to integrate an ionic thermoelectric network, luteolin and zinc ions into a dual-network hydrogel. Thermoelectric stimulation regulates the reparative behaviors of fibroblasts, and the calcium ion-calmodulin-mediated PI3K/Akt-Erk signaling axis is identified as the downstream molecular pathway.

🤔 III. Key Material Design and Validation AMPS-Na serves as the thermoelectric skeleton, DPMA provides catechol groups, zinc ions form metal-phenolic coordination, and luteolin crosslinks the system via non-covalent interactions to construct the dual network. The material features wet adhesion and mechanical stability, and enables sequential release of active components. It achieves in vitro antibacterial and anti-biofilm effects, modulates macrophage polarization, exerts antioxidant activity, and promotes cell proliferation, migration and angiogenesis.

📄 IV. Insights and Outlook (1) Reverse thinking: Targeting the loss of wound bioelectricity, the inherent temperature difference of the human body is utilized for signal reconstruction without an external power supply. (2) Systematic design: The mechanical, electrical and bioactive properties of the material structure are co-designed to address multiple pathological issues of wounds through multi-targeted actions. (3) Platform potential: This composite hydrogel strategy can be extended to research on other chronic non-healing wounds.

📄 V. Article Information (1) Journal Source: Advanced Materials (2) Article Title: Bioelectric Reawakening by a Self‑Powered Thermoelectric Hydrogel Accelerates Diabetic Ulcer Repair

#Biomaterials #PostgradResearch #Literature #ResearchStudy #Hydrogel #DiabeticUlcer #TissueEngineering

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