生物膜产生的生物及其在慢性辅助性中耳炎中对抗生素的敏感性:一个横截面研究
Zaaraasmat Ahesannawaz Mujahid1, Shilpa Saji Palal1, Gopika Gopan1
1Department of Otorhinolaryngology, Bangalore Medical College and Research Institute, Bangalore, Karnataka India.
概括
生物膜对慢性辅助性中耳炎 (CSOM) 和抗生素耐药性有显著的贡献. 对生物膜形成的查对于有效的CSOM治疗和对抗多药物耐药性至关重要.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
背景情况:
- 慢性辅助性中耳炎 (CSOM) 的特征是中耳裂炎症.
- 细菌生物膜越来越多地被认为是CSOM病原体的关键贡献者.
- 生物膜促进抗生素耐药性,基因交换和免疫逃避.
研究的目的:
- 为了确定CSOM中生物膜产生细菌的范围.
- 评估这些产生生物膜的细菌对抗生素的敏感性.
- 突出生物膜查在CSOM管理中的临床影响.
主要方法:
- 从CSOM患者的外部听觉介质收集了648个样本.
- 处理的样本用于细菌培养和抗生素敏感性测试.
- 在细菌分离物中检测和量化了生物膜的形成.
主要成果:
- 伪 (62.6%) 和MRSA (13.8%) 是500个培养阳性样本中最常见的分离物.
- 70%的分离物产生了生物膜,其中Pseudomonas是最常见的生产者 (74.6%).
- 亨塔米辛对生物膜制造者表现出最高的疗效,而阿莫西西林 - 克拉夫兰酸,塞夫特里亚克,塞福洛キシ姆和米诺环素表现出耐药性.
结论:
- 多种药物耐药性在CSOM病原体中普遍存在,特别是生物膜生产者.
- 对于CSOM协议,建议在抗生素图谱的同时进行生物膜形成的例行查.
- 整合生物膜评估将改善治疗选择,并解决抗菌素耐药性问题.
相关概念视频
Biofilms
2
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...
2
Gene Regulation in Microbial Communities: Quorum Sensing
4
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,...
4
Bacterial Phylum Actinobacteria
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
Development of Antibiotic Resistance
1
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...
1
Defense 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


