植物化学-抗生素组合的光动态激活,用于对抗来自急性伤口感染的金黄色葡萄球菌
Ariana S C Gonçalves1, Miguel M Leitão2, José R Fernandes3
1LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; ALICE-Associate Laboratory for Innovation in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal; Environmental Health Department, Portuguese National Health Institute Doutor Ricardo Jorge, Porto, Portugal.
Journal of photochemistry and photobiology. B, Biology
|July 13, 2024
概括
这项研究探讨了使用植物化学品与抗生素对抗抗生素耐药黄金葡萄球菌 (MRSA) 在伤口感染. 光动力学激活显著增强了治疗,降低了细菌水平并恢复了抗生素的有效性.
科学领域:
- 微生物学 微生物学
- 摄影化学的使用.
- 药理学 药理学是指药理学的学科.
背景情况:
- 黄金葡萄球菌,特别是耐甲西林菌株 (MRSA),由于抗生素耐药性高,在伤口感染中构成了重大挑战.
- 持续的急性金黄色细菌感染可能导致慢性,增加治疗复杂性和患者的风险.
- 传统的抗生素往往不足以对抗抗性S. aureus菌株.
研究的目的:
- 在急性伤口感染模型中研究将植物化学品与抗生素结合用于消除金黄色细菌的疗效.
- 评估光动力学激活的潜力,以增强这些组合的抗菌活性.
- 为了减轻急性黄金色杆菌伤口感染进展到慢性状态的风险.
主要方法:
- 选的植物化学物质 (贝贝林,黄素,法内索尔,酸,素) 和抗生素对MRSA和MSSA菌株的抗菌活性进行选.
- 使用不同剂量的蓝色 (420nm) 或UV-A (365nm) LED光进行评估的光动力学活性.
- 评估了植物化学-抗生素组合的协同效应,包括光动力学激活和没有光动力学激活.
主要成果:
- 所有测试的植物化学物质都恢复了抗生素活性;9和13组合分别对MSSA和MRSA产生了增强作用.
- 用蓝光 (420nm) 进行光动力学激活,可以将柏柏林和黄素的杀菌度降低8至80倍.
- 柏柏林和黄素与蓝光光动力学激活的组合减少了S. aureus的培养能力约为9 log CFU/mL,并恢复了珍塔米辛和托布拉米辛的活性.
结论:
- 植物化学与抗生素的组合显示出对抗黄金色球菌的协同效应.
- 抗微生物光动力失活显著提高了这些组合的杀菌效果.
- 这种双重方法提供了一个有前途的策略,以减少伤口感染中的金黄色细菌负担,并克服抗生素耐药性.
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