Multifaceted role of nanocomposite hydrogels in diabetic wound healing: enhanced biomedical applications and detailed molecular mechanisms

The complex microenvironment of diabetic wounds, which is characterized by persistent hyperglycemia, excessive inflammatory responses, and hypoxic conditions, significantly impedes the efficacy of traditional hydrogels. Nanocomposite hydrogels, which combine the high-water content and biocompatibility of hydrogels with the unique functionalities of nanomaterials, offer a promising solution. These hydrogels exhibit enhanced antibacterial, antioxidant, and drug-release properties. Incorporating nanomaterials increases the mechanical strength and bioactivity of hydrogels, allowing for dynamic regulation of the wound microenvironment and promoting cell migration, proliferation, and angiogenesis, thereby accelerating wound healing. This review provides a comprehensive overview of the latest advances in nanocomposite hydrogels for diabetic wound treatment and discusses their advantages and molecular mechanisms at various healing stages. The study aims to provide a theoretical foundation and practical guidance for future research and clinical applications. Furthermore, it highlights the challenges related to the mechanical durability, antimicrobial performance, resistance issues, and interactions with the cellular environments of these hydrogels. Future directions include optimizing smart drug delivery systems and personalized medical approaches to enhance the clinical applicability of nanocomposite hydrogels.