硫酸二对Bacillus cereus的抗菌活性机制
Manish Kumar Manjhi1, Prachi Chauhan1, Chandrama Prakash Upadhyaya1
1Department of Biotechnology, Dr. Harisingh Gour Vishwavidyalaya, Sagar, 470003, India.
Journal of Ayurveda and integrative medicine
|June 13, 2024
概括
白中的一种化合物硫酸二 (DAS) 通过破坏其细胞膜,有效地对抗细菌. 这种机制表明DAS可能是一种新型抗菌剂或辅助剂,对抗抗菌素耐药性至关重要.
科学领域:
- 微生物学 微生物学
- 自然产品化学 自然产品化学
- 食品安全 食品安全
背景情况:
- 抗菌素耐药性 (AMR) 是全球卫生危机,预计到2050年,每年有1000万人死亡.
- 植物化学物质,如大的有机硫化合物,显示作为新型抗菌剂对抗耐药细菌的承诺.
- 硫化 (DAS) 是大精油的关键成分,具有已知的抗菌特性.
研究的目的:
- 调查二硫化物 (DAS) 对细菌谷物菌的抗菌活性.
- 阐明DAS对B. cereus的抗菌作用的作用机制.
- 评估DAS作为一种新型抗菌剂或辅助疗法的潜力.
主要方法:
- 确定了针对Bacillus cereus的DAS的最小抑制度 (MIC).
- 从用 DAS.治疗的 B. cereus 细胞中量化细胞内蛋白质泄漏.
- 利用扫描电子显微镜 (SEM) 可视化DAS对B. cereus细胞形态的影响.
主要成果:
- DAS对B. cereus表现出显著的抗菌活性,MIC为54.75毫米.
- DAS治疗导致了细胞内蛋白质的剂量和时间依赖的泄漏,特别是在酸性pH下.
- 在SEM分析中,暴露于DAS的B. cereus细胞中发现了膜变形,表明细胞完整性受到损害.
结论:
- 硫酸二 (DAS) 通过破坏Bacillus cereus的细胞膜完整性来发挥其抗菌作用.
- DAS的膜损害机制表明耐药性发展的可能性较低.
- DAS显示出控制B. cereus感染的潜力,并可以作为一种新型抗菌剂或现有抗生素的辅助剂.
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