细菌衍生的脂可以抑制和消灭热带 (Candida tropicalis) 生物膜:一个体外探索
Madhuri Madduri1, Shivaprakash M Rudramurthy2, Utpal Roy1
1Department of Biological Sciences, BITS Pilani K.K. Birla Goa Campus, NH 17B Bypass Road, Goa, 403726, India.
Biofilm
|July 17, 2025
概括
来自Bacillus subtilis的天然脂AF4和AF5有效地对抗Candida tropicalis生物膜. 这些化合物防止粘附,抑制形成,并消除成熟的生物膜,显示出强大的抗真菌剂的潜力.
科学领域:
- 菌类学 菌类学是指菌类学.
- 生物化学 生物化学
- 微生物学 微生物学
背景情况:
- 热带是一种重要的机会性真菌病原体,引起各种感染.
- 抗真菌耐药性的增加需要新的治疗策略,特别是天然药物.
- 生物和非生物表面上的C. tropicalis生物膜形成是一个重大的临床挑战.
研究的目的:
- 评估脂AF4和AF5对Candida tropicalis的抗生物膜疗效.
- 为了研究AF4和AF5与可纳的协同作用潜力.
- 评估这些脂对生物膜结构和活性的影响.
主要方法:
- 使用半准备的HPLC从细菌细菌中净化脂AF4和AF5.
- 在体外评估使用晶体紫色,XTT减小,EPS量化和ATR-FTIR的抗生物膜活性.
- 同焦激光扫描显微镜 (CLSM) 和COMSTAT分析用于形态评估.
主要成果:
- 脂AF4和AF5在6小时内有效地阻止了C.热带的粘附,并抑制了生物膜的形成.
- 成熟的生物膜被消灭,生物质和代谢活动显著减少.
- AF4和AF5破坏了生物膜结构,损伤了细胞表面和减少了状细胞;AF5显示与可纳的协同作用.
结论:
- 脂AF4和AF5是对Candida tropicalis生物膜的强有力的天然剂.
- AF4显示出作为所有生物膜阶段的独立剂的强大潜力.
- 这些脂代表了管理具有挑战性的真菌感染的有希望的替代品.
相关概念视频
01:29Biofilms
284
Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...
284
01:28Biological Methods for Microbial Control
209
Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
209
01:28Gene Regulation in Microbial Communities: Quorum Sensing
96
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,...
96