生物黄Baicalein通过抑制Staphylococcus aureus中的排泄来调节四环素耐药性
Soumitra Moulick1,2, Dijendra Nath Roy2
1TCG Lifesciences Private Limited, Kolkata, India.
Microbial drug resistance (Larchmont, N.Y.)
|August 12, 2024
概括
植物化合物拜卡莱因 (Baicalein) 通过阻断排泄,增强了对抗生素耐药黄金葡萄球菌 (Staphylococcus aureus) 的四环素有效性. 这种组合疗法在治疗危险的细菌感染方面表现有前途.
科学领域:
- 微生物学与传染病的研究
- 药理学和药物发现
- 自然产品化学 自然产品化学
背景情况:
- 黄金葡萄球菌 (Staphylococcus aureus) 的抗生素耐药性是全球主要的健康威胁.
- 黄金葡萄球菌使用排泄,生物膜形成和药物修饰来抵抗抗生素.
- 需要新的策略来克服S. aureus的多药性耐药性.
研究的目的:
- 为了研究贝卡莱因在 Staphylococcus aureus 中克服四环素耐药性的潜力.
- 为了评估贝卡莱因与四环素的协同作用.
- 探索贝卡莱因的作用机制,包括排泄的抑制.
主要方法:
- 最低抑制度 (MIC) 测定贝卡莱因和四环素.
- 分数抑制度指数 (FICI) 计算以评估协同效应.
- 时间杀伤动力学,乙化积累试验,DNA合成抑制试验,生物膜形成试验和细胞入侵试验.
主要成果:
- 拜卡莱因显著降低了四环素的MIC的8倍,表明了协同作用 (FICI=0.375).
- 拜卡莱因抑制了排泄,导致乙基化物积累增加.
- 贝卡莱因和四环素的组合抑制了DNA合成 (92%),减少了生物膜形成 (52%),并减少了细菌入侵.
结论:
- 拜卡莱因增强了对黄金葡萄球菌 (Staphylococcus aureus) 的四环素活性.
- 拜卡莱因的作用部分是通过抑制细菌排泄来起作用.
- 拜卡莱因是一种有前途的辅助治疗剂,用于对抗多药耐药的金黄色葡萄球菌感染.
更多相关视频
07:47Anti-virulent Disruption of Pathogenic Biofilms using Engineered Quorum-quenching Lactonases
Published on: January 1, 2016
11.5K
05:06Author Spotlight: Advancing Antibiotic Resistance Research Using an Efflux-Deficient Bacterial Strain and a Single-Copy Gene Expression System
Published on: January 5, 2024
564
相关概念视频
01:27Combined Effects of Drugs: Synergism
3.8K
Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Such synergistic combinations...
3.8K
01:31Defense Against Bacterial Pathogens
1.4K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
1.4K