多药耐药格拉姆阴性病原体中的抗微生物耐药异质性:表型,基因型和蛋白质组分析
Tanshi Mehrotra1, Dipasri Konar2, Agila Kumari Pragasam1
1Infection and Immunology Division, Functional Genomics Laboratory, Centre for Microbial Research, Translational Health Science and Technology Institute, Faridabad 121001, India.
概括
基因组分析揭示了来自印度的临床细菌分离物中的病原体特异性抗微生物耐药性 (AMR) 基因和移动遗传元素. 这种理解有助于AMR诊断和选择有效的抗菌疗法.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 传染性疾病 传染性疾病
背景情况:
- 微生物进化涉及基因组修改和水平基因转移,导致抗菌素耐药性 (AMR) 等特征.
- 了解临床病原体中的AMR动态对于有效的治疗策略至关重要.
研究的目的:
- 在印度解码导致败血症,尿路感染和呼吸道感染的细菌病原体的基因组序列.
- 确定病原体特异性抗微生物耐药性基因 (ARG) 和移动遗传元素 (MGE).
- 分析AMR的功能性强度及其在临床环境中的动态.
主要方法:
- 在印度收集临床样本的多中心研究.
- 细菌病原体的基因组测序.细菌病原体的基因组测序.
- 对广泛耐药菌株的全细胞蛋白质组分析.
主要成果:
- 在 *Escherichia coli*, *Klebsiella pneumoniae*, *Pseudomonas aeruginosa* 和 *Acinetobacter baumannii* 中发现了特定病原体的 ARG 和 MGE.
- 观察到的流行ARG如*E. coli*中的*bla*NDM-5和*bla*TEM-1B, *K. pneumoniae*中的*bla*OXA-232等.
- 在对抗生素的反应中检测到与耐药性相关的蛋白质的差异性丰度.
结论:
- 病原体特异性耐药特征和蛋白质概况可以增强AMR诊断.
- 研究结果支持对抗微生物药物组合进行知情选择,以获得有效的治疗.
相关概念视频
Development of Antibiotic Resistance
40
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...
40
Modern Molecular Taxonomy
52
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...
52
Antibiotic Selection
54.7K
Overview
54.7K
Antimicrobial Effectiveness
48
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
48
Methods of Classification and Identification
37
Bacterial identification relies on a diverse array of techniques to classify and understand microorganisms, each tailored to uncover specific characteristics. Traditional morphological approaches, while still valuable, are limited for closely related or structurally simple organisms. Modern methods integrate biochemical, serological, genetic, and advanced molecular tools to achieve greater accuracy.Morphological and Biochemical TechniquesMorphological characteristics, such as cell shape and...
37


