过氧化预氧化作为一种增强抗微生物光动力学作用的策略,用于对抗抗甲基西林耐药的金黄色葡萄球菌
Kamila Jessie Sammarro Silva1, Alessandra Ramos Lima2, Lucas Danilo Dias3
1Environmental Biophotonics Laboratory, São Carlos Institute of Physics (IFSC), University of São Paulo (USP), 13563-120 São Carlos/SP, Brazil
Journal of water and health
|December 28, 2023
概括
这项研究表明,用过氧化 (H2O2) 进行预处理可以增强使用黄素对抗抗生素耐药细菌的抗微生物光动力治疗 (aPDT). 这种协同方法为水消毒提供了一个有希望的战略.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 摄影化学的使用.
背景情况:
- 抗微生物光动力处理 (aPDT) 显示出对水的消毒有希望,特别是对抗生素耐药细菌 (ARB) 的消毒.
- 过氧化 (H2O2) 是一种有效的消毒剂,具有环保的残留物,适用于水处理.
- 黄素是一种天然的光敏感剂,正在探索改善aPDT的疗效.
研究的目的:
- 调查过氧化预氧化和基于黄素的aPDT对抗抗甲素耐药金黄色葡萄球菌 (MRSA) 的协同效应.
- 评估这种综合方法在加强水和废水消毒方面的潜力.
主要方法:
- 涉及H2O2预氧化的连续处理,随后使用黄素进行蓝光 (450nm) 介导的aPDT.
- 对抗甲素耐药黄金葡萄球菌 (MRSA) 的测试.
- 细菌不活化的量化 (log10 CFU mL−1).
主要成果:
- 在H2O2预氧化和黄素aPDT之间观察到对MRSA的合作,协同效应.
- 最佳的H2O2度导致显著的细菌失活 (≥7 log10).
- 非常低的H2O2度显示,最初对aPDT的效率有轻微的阻碍.
结论:
- H2O2预氧化和黄aPDT的组合显示出协同作用,显著提高了消毒效率.
- 这一战略有可能解决水和废水中抗生素耐药细菌的传播问题.
- 鼓励对这种辅助技术的最佳操作条件进行进一步的研究.
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