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光启动的氧化释放作为慢性伤口的抗菌治疗

Courtney R Johnson¹, Mark H Schoenfisch^1,2

¹Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.

ACS biomaterials science & engineering

|February 11, 2025

概括

这项研究将光生物调制 (PBM) 和氧化 (NO) 结合起来,使用创伤包中的改性纳米粒子. 这种新的方法有效地杀死慢性伤口中的细菌,同时对皮肤细胞保持安全.

科学领域:

生物材料科学生物材料科学
纳米技术纳米技术
伤口治愈研究研究伤口治愈研究

背景情况:

由于持续的细菌感染,慢性伤口带来了重大挑战.
目前的治疗方法经常面临有效性和细菌耐药性的局限性.
氧化 (NO) 和光生物调制 (PBM) 显示出作为抗菌策略的前景.

研究的目的:

开发一种可调节,按需治疗慢性伤口的治疗方法.
为了结合PBM和NO的抗菌作用.
评估一种新型伤口带的疗效和安全性.

主要方法:

合成的S-nitrosothiol修饰的半孔性二氧化纳米粒子 (RSNO-MSNs).
用多乙烯 (PU) 合RSNO-MSN来制造伤口带.
在不同的光线条件下 (405,430,530 nm) 研究了NO释放动力学和有效载荷.
评估了对 Pseudomonas aeruginosa 和金黄色葡萄球菌的抗菌活性.
证实了与人类表皮皮细胞的细胞相容性.

主要成果:

结合PBM和NO释放纳米颗粒显示出强大的杀菌活性.
可调节的NO释放是通过改变光参数来实现的.
这种伤口剂配方对常见的慢性伤口病原体具有很高的疗效.
没有观察到对皮肤细胞的不良影响,这表明细胞兼容性良好.

结论:

开发的RSNO-MSN合PU包裹为慢性伤口感染提供了有前途的双重作用治疗方法.
这种方法提供了一种可调节和按需的方法,用于输送抗菌NO.
该疗法对关键的伤口病原体有效,对宿主细胞安全,为先进的伤口护理解决方案铺平了道路.

关键词:

对于S-尼特罗斯醇而言,这是一个很好的例子.慢性伤口病原体慢性伤口病原体通过光介导的释放.半孔的二氧化纳米粒子.氧化氧化的使用方法

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