Preparation of Antibacterial, Arginine-Modified Ag Nanoclusters in the Hydrogel Used for Promoting Diabetic, Infected Wound Healing.
Housen JiangQin XuXiaolin WangLin ShiXuedong YangJianmin SunXifan MeiPublished in: ACS omega (2023)
Diabetic foot ulcers with complex healing wounds accompanied by bacterial infection are considered a significant clinical problem which are made worse by the lack of effective treatments. Traditional antibiotics and dressings have failed to address wound infection and healing, and multifunctional combination therapies are attractive for treating chronic wounds. In this study, arginine (Arg) was loaded onto the surface of silver nanoclusters and encapsulated in a hydrogel to achieve antibacterial, anti-inflammatory, angiogenic, and collagen deposition functions through the slow release of Arg combined with silver nanoclusters. In vitro studies indicated that Arg-Ag@H composites inhibited methicillin-resistant Staphylococcus aureus and Escherichia coli by 94 and 97%, respectively. The inhibition of bacterial biofilms reached 85%, and the migration ability of human venous endothelial cells (HUVECs) increased by 50%. In vitro studies showed that Arg-Ag@H composites increased the healing area of wounds by 26% and resulted in a 98% skin wound-healing rate. Safety studies confirmed the excellent biocompatibility of Arg-Ag@H. The results suggest that Arg-Ag@H offers new possibilities for treating chronic diabetic wounds.
Keyphrases
- wound healing
- endothelial cells
- quantum dots
- visible light
- methicillin resistant staphylococcus aureus
- sensitive detection
- escherichia coli
- highly efficient
- anti inflammatory
- nitric oxide
- case control
- gold nanoparticles
- fluorescent probe
- drug delivery
- energy transfer
- silver nanoparticles
- type diabetes
- pseudomonas aeruginosa
- candida albicans
- cancer therapy
- cystic fibrosis
- vascular endothelial growth factor
- label free
- klebsiella pneumoniae
- biofilm formation
- essential oil