🔍 Core Insights of the Full Text Repair of long‑segment peripheral nerve injury still faces multiple challenges. Oxidative stress, inflammatory response, insufficient angiogenesis and limited axonal regeneration rate constitute the key bottlenecks. The core idea of this study is to precisely regulate the nerve regenerative microenvironment to facilitate cell migration and accelerate axonal outgrowth, so as to tackle these obstacles.

💡 Research Innovations and Breakthroughs This study first proposes the concept of "integrated regenerative microenvironment", which organically combines three regulatory approaches: chemical signals, nanostructures and electrical stimulation. Innovatively, sustained and responsive nitric‑oxide release is realized to dynamically modulate oxidative‑stress and inflammatory status. Meanwhile, a non‑invasive electroactive conduit is constructed to integrate external electrical stimulation with the delivery function of hydrogel scaffolds, providing multi‑dimensional synergistic regulation for nerve regeneration.

⚙️ Detailed Material Design and Fabrication Microgel‑based hydrogel: Gelatin‑lipoic‑acid microgel‑based hydrogel is designed to form an interconnected macroporous scaffold architecture, which greatly improves cell infiltration and proliferation, outperforming conventional hydrogels. Electroactive conduit system: A non‑invasive electroactive conduit is built to deliver stable external electrical stimulation, promoting nerve‑cell migration and secretion of relevant growth factors. Multi‑signal synergy: Nitric‑oxide signaling, physical support from hydrogel scaffolds, and biological effects of electrical stimulation work in concert to guide axonal regeneration and angiogenesis.

🧠 In‑depth Implications and Future Outlook This study validates the potential of multi‑signal synergistic regulation in tissue regeneration and offers new perspectives for repairing long‑segment peripheral nerve injury. Further exploration may focus on the adaptability of this modular delivery system in other neurological disorders and tissue‑regeneration scenarios, expanding its scope for fundamental research.

📌 Key Information Indexing Core Strategy: Modulate the nerve regenerative microenvironment Core Materials: Gelatin‑lipoic‑acid microgel‑based hydrogel, non‑invasive electroactive conduit Core Mechanism: Dynamic nitric‑oxide release + electrical‑stimulation regulation + macroporous‑structure support

📄 Article Information Journal Source: Advanced Materials Original Title: An Injectable and Modular NO‑Adaptive Delivery System for Modulating Regenerative Microenvironment in Long‑Segment Nerve Injury

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