Cheng Liang, Zhang Song, Zhang Qian, Gao Wenjie, Mu Shengzhi, Wang Benfeng
Department of Burns and Plastic Surgery, Shaanxi Provincial People's Hospital, Xi'an, 710068, China.
Heliyon. 2024 Aug 10;10(17):e36118. doi: 10.1016/j.heliyon.2024.e36118. eCollection 2024 Sep 15.
In this study, we green synthesized silver nanoparticles (Ag Nps) from leaves (HE-Ag NPs) and evaluated their antimicrobial and wound-healing properties. The synthesized HE-Ag NPs were characterized using various techniques, revealing face-centered polygonal structures, a well-dispersed appearance, and an average particle size of 42-51 nm. The antimicrobial effects of HE-Ag NPs and their embedded cotton fabrics were tested against several pathogens, showing effective inhibition of growth. The cytotoxicity and anti-inflammatory properties of HE-Ag NPs were assessed using MTT assays on L929 and RAW 264.7 cells and by measuring inflammatory cytokine levels in LPS-treated RAW 264.7 cells. HE-Ag NPs did not affect the viability of L929 and RAW 264.7 cells and significantly reduced inflammatory cytokine levels. studies using an excision wound model demonstrated that HE-Ag NPs-loaded ointment significantly increased hydroxyproline, total protein, and antioxidant levels and enhanced the wound contraction rate. These findings suggest that HE-Ag NPs have potent antimicrobial properties and promote wound healing, indicating their potential for use in topical ointments for wound care.
在本研究中,我们从树叶中绿色合成了银纳米颗粒(HE-Ag NPs),并评估了它们的抗菌和伤口愈合特性。使用各种技术对合成的HE-Ag NPs进行了表征,结果显示其为面心多边形结构,外观分散良好,平均粒径为42-51纳米。测试了HE-Ag NPs及其嵌入的棉织物对几种病原体的抗菌效果,结果显示对生长有有效抑制作用。使用MTT法对L929和RAW 264.7细胞进行检测,并通过测量脂多糖处理的RAW 264.7细胞中的炎性细胞因子水平,评估了HE-Ag NPs的细胞毒性和抗炎特性。HE-Ag NPs不影响L929和RAW 264.7细胞的活力,并显著降低炎性细胞因子水平。使用切除伤口模型的研究表明,负载HE-Ag NPs的软膏显著提高了羟脯氨酸、总蛋白和抗氧化剂水平,并提高了伤口收缩率。这些发现表明,HE-Ag NPs具有强大的抗菌特性并促进伤口愈合,表明它们在用于伤口护理的外用软膏中的应用潜力。