[Research advances on multifunctional hydrogel dressings for treatment of diabetic chronic wounds].

Diabetes can lead to a variety of complications, such as chronic wound (diabetic foot), which is one of the important causes of death for patients with diabetes. Unfavorable factors such as high blood glucose, high level of oxidative stress and inflammation, and susceptibility to infection lead to difficult healing and even worsening of diabetic chronic wounds. Due to the advantages of high water content, good biocompatibility, and tunable physicochemical properties, the hydrogels have become hot-spot materials in wound dressing research. Compared with the traditional dressings such as gauze, the hydrogel dressings can provide a moist environment that is beneficial for wound healing. By loading of bioactive components and modulation of compositions and structures of hydrogels, the hydrogel dressings can be endowed with excellent tissue adhesion, antibacterial ability, anti-oxidation, and inflammation regulation effect, etc., and thus show great prospects in wound dressing applications. Based on the characteristics of hydrogel materials and microenvironment of diabetic chronic wound, this review summarized the research advances on new multifunctional hydrogel dressings for the treatment of diabetic chronic wounds in recent years, and discussed the drawbacks of current hydrogel dressings with prospects proposed.糖尿病会导致多种并发症如慢性创面（糖尿病足），是导致糖尿病患者死亡的重要原因之一。高血糖、高氧化应激水平、高炎症水平以及易感染等不利因素使糖尿病致慢性创面难以愈合，甚至进一步恶化。水凝胶材料由于具有含水量高、生物相容性好和理化性能可调控等优点，已成为当前创面敷料研究中的热点材料。相较于纱布等传统敷料，水凝胶敷料可为创面提供有利于愈合的湿润环境。通过负载活性物质和改变水凝胶组成及结构，水凝胶敷料可被赋予优异的组织黏附、抗菌、抗氧化以及调控炎症因子表达等功能，因此其在创面敷料应用领域中具有广阔的前景。本文基于糖尿病致慢性创面微环境和水凝胶材料的特点，总结了近年来用于治疗糖尿病致慢性创面的新型多功能水凝胶敷料的研究进展，同时探讨了当前水凝胶敷料的不足并提出展望。.