石墨烯氧化物的杀菌活性测试对选定的微生物进行了测试
Katarzyna Olczak1, Witold Jakubowski2, Witold Szymański2
1Department of Endodontics, Medical University of Lodz, Pomorska 251, 92-213 Lodz, Poland.
Materials (Basel, Switzerland)
|June 10, 2023
概括
石墨烯氧化物 (GO) 对大肠杆菌和金黄色杆菌等常见细菌具有显著的抗菌特性. 更高的GO度和更长的暴露时间增强了其杀菌潜力,提供了有前途的抗菌应用.
科学领域:
- 材料科学 材料科学 材料科学
- 微生物学 微生物学
- 纳米技术纳米技术
背景情况:
- 氧化石墨烯 (GO) 是一种具有潜在生物医学应用的新型纳米材料.
- 了解它对各种细菌物种的抗菌疗效对于开发新的抗菌策略至关重要.
研究的目的:
- 研究石墨烯氧化物 (GO) 的杀菌潜力.
- 评估GO度和化时间对细菌活力的影响.
- 将GO的抗菌活性与四种不同的细菌物种进行比较:大肠杆菌,S. mutans,S. aureus和E. faecalis.
主要方法:
- 细菌细胞悬浮液在不同的时间点 (5-60分钟) 中以不同度的GO (50-500μg/mL) 进行化.
- 活/死染色被用来评估细菌的生存能力.
- 流细胞计 (BD Accuri C6) 和专门的软件 (BD CSampler) 用于数据采集和分析.
主要成果:
- 在所有测试的GO度和化时间中观察到细菌活力的显著降低.
- 抗菌活性是剂量依赖和时间依赖的,在300和500微克/毫升GO时有效性更高.
- 大肠杆菌表现出对GO的最高敏感性,死亡率在60分钟后在500μg/mL时达到96%的死亡率.
- 黄金菌的易感性较低,60分钟后500μg/mL的死亡率为55%,60分钟后死亡率为55%.
结论:
- 石墨烯氧化物具有显著的杀菌特性,可以对抗阴性细菌 (大肠杆菌) 和阳性细菌 (金黄色细菌,S. mutans,E. faecalis).
- 作为一种抗微生物药物的GO的有效性受到其度和暴露时间的显著影响.
- 基因基因证明了在抗微生物应用中使用的潜力,其有效性因细菌物种而异.
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