对结核瘤细菌群落的多样性和功能潜力的分析
E A Orlova1, O B Ogarkov2, I G Kondratov2
1Scientific Center for Family Health and Human Reproduction Problems, Irkutsk, Russia. elizaveta.a.orlova@gmail.com.
Bulletin of experimental biology and medicine
|July 3, 2024
概括
结核肺部微生物群在健康和感染组织之间存在显著差异. 结核病由Mycobacterium tuberculosis主导,具有不同的预测代谢途径.
科学领域:
- 微生物学 微生物学
- 肺部医学 肺部医学
- 基因组学就是基因组学.
背景情况:
- 肺部微生物群在结核病 (TB) 发病过程中的作用尚不清楚.
- 在受结核病影响的肺部中描述微生物群落对于了解疾病动态至关重要.
研究的目的:
- 研究受结核病影响的人类肺组织中的细菌群落的多样性和代谢潜力.
- 为了比较健康的肺组织和结核病变 (结核瘤) 之间的肺微生物组成.
主要方法:
- 在手术切除的结核病焦点和正常的肺活检样本上进行了16S rRNA基因测序.
- 包括PICRUSt2在内的生物信息分析被用来预测已识别的细菌群体的代谢潜力.
主要成果:
- 在健康的肺和结核瘤之间观察到分类学多样性和社区结构的显著差异.
- 健康的肺部微生物群表现出各种各样的多样性,包括格拉姆阳性和格拉姆阴性细菌.
- 结核病绝大多数是由Mycobacterium tuberculosis (99.9%) 占主导地位.
- 结核瘤中预测的代谢途径包括胆固醇代谢,硫酸盐同化和细胞壁生物合成.
结论:
- 肺部微生物群的组成在结核病中发生了巨大的变化,结核病菌菌在病变中占主导地位.
- 在结核病变的微生物群中预测了不同的代谢途径,可能反映了适应或宿主-病原体相互作用.
相关概念视频
Modern Molecular Taxonomy
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
Applications of Molecular Taxonomy
Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
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...
Methods to Assess Microbial Communities
Microbial communities, comprising bacteria, archaea, and eukaryotic microorganisms, inhabit diverse ecosystems and play crucial roles in environmental and biological processes. Their diversity is defined by three main parameters: species richness (the number of distinct species), species abundance (the relative quantity of each species), and species evenness (how uniformly individual species are distributed in various locations). These factors together shape the structure and ecological balance...


