在 Pseudomonas aeruginosa 中通过 uL4 和 uL22 核糖体突变产生宏类耐药性
Lise Goltermann1, Pablo Laborda1, Oihane Irazoqui2
1Department of Clinical Microbiology 9301, Rigshospitalet, 2100, Copenhagen, Denmark.
Nature communications
|October 16, 2024
概括
麦克罗利德有效治疗Pseudomonas aeruginosa呼吸道感染,与此前的看法相反. 然而,长时间使用可能会导致耐药性突变,因此需要对患有囊性纤维化和原发性纤维功能障碍的患者进行仔细监测.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 抗生素耐药性 抗生素耐药性
背景情况:
- Pseudomonas aeruginosa 通常对宏类药物具有耐药性,这限制了它们作为抗生素的使用.
- 麦克罗利德具有免疫调节和抗病毒性质,对持久的P. aeruginosa感染有益.
研究的目的:
- 在人类呼吸道模型中研究宏化物对P. aeruginosa的疗效.
- 确定宏类耐药性机制及其对P. aeruginosa毒性和致病性的影响.
主要方法:
- 利用模拟人类呼吸道的空气-液体接口 (ALI) 感染模型.
- 在患有囊性纤维化和原发性纤维功能障碍的患者中分析了对P. aeruginosa的宏类治疗效应.
- 研究的核糖体蛋白突变 (uL4 和 uL22) 赋予了宏类耐药性.
主要成果:
- 麦克罗利德在ALI模型中证明了对P. aeruginosa的有效性.
- 在P. aeruginosa.中,麦克罗利德治疗诱导了耐药性突变 (uL4, uL22).
- 这些突变减少了细菌的生长,毒性和病原性,即使没有抗生素.
结论:
- 麦克罗利德应被视为有效的抗生素,用于对抗P. aeruginosa的呼吸道感染.
- 在长期治疗期间,监测宏类耐药性至关重要.
- 诱导的耐药性突变通过减少P. aeruginosa的毒性,具有附带的好处.
更多相关视频
05:23Gastric Mucosa Quantitative Polymerase Chain Reaction Analysis for Detecting Helicobacter pylori and Antibiotic Resistance
Published on: March 7, 2025
285
08:34Generation of In-Frame Gene Deletion Mutants in Pseudomonas aeruginosa and Testing for Virulence Attenuation in a Simple Mouse Model of Infection
Published on: January 8, 2020
6.7K
相关概念视频
01:28Gene Regulation in Microbial Communities: Quorum Sensing
3
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
3
01:30Development of Antibiotic Resistance
Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...