三重抗菌组合具有强大的协同作用,对抗M. (abscessus) 是一种的情况
Yanqin Huang1,2, Lucius Chiaraviglio2, Ibidunni Bode-Sojobi1,2
1Harvard Medical School, Boston, Massachusetts, USA.
Antimicrobial agents and chemotherapy
|March 14, 2025
概括
新的三重抗微生物组合显示对Mycobacterium abscessus的协同作用. 某些组合使抗性菌株对亚齐胺素重新敏感,为治疗提供了新的途径.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 菌根是一种机会性病原体,会导致严重的肺部感染.
- 由于内在和获得的抗菌素耐药性,治疗M. abscessus感染具有挑战性.
- 迫切需要新的治疗策略来对抗M.疹感染.
研究的目的:
- 评估新型三重抗菌组合对当代M. abscessus分离物的协同活性.
- 评估这些组合在克服M. abscessus.宏类耐药性的有效性.
- 为了确定潜在的临床应用的强效抗微生物组合.
主要方法:
- 使用2D和3D棋盘测试对抗微生物组合的协同测试.
- 与当代Mycobacterium abscessus分离物的小组进行评估.
- 确定分数抑制度 (FIC) 指数以定义协同作用.
主要成果:
- 在分别33%,31%,62%和66%的隔离物中,三重组合的奥马达环素-阿兹罗米辛-克洛法齐明,tigecycline-azithromycin-clofazimine,奥马达环素-阿兹罗米辛-linezolid和奥马达环素-阿兹罗米辛-contezolid显示出协同作用.
- 值得注意的是,抗化物耐药的M. abscessus亚种. 部和M.部亚种. 在所有评估的三重组合中,bolletii分离物对亚齐胺素重新敏感.
- 具有 clofazimine 最低抑制度 (MIC) 较高的隔离物也对 clofazimine 重新敏感.
结论:
- 某些三重抗菌药物组合在对抗Mycobacterium abscessus时表现出显著的协同作用.
- 这些组合显示出克服宏化物和克洛法胺耐药机制的潜力.
- 这些发现支持进一步研究这些协同疗法来治疗M. abscessus感染.
相关概念视频
Combined Effects of Drugs: Synergism
3.7K
Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Such synergistic combinations...
3.7K
Antimicrobial Proteins
852
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
852
Hand hygiene
3.1K
Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
Hand washing...
Hand washing...
3.1K
Surface Membrane Barriers
805
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
805
Treating Helicobacter pylori in Peptic Ulcers: Antimicrobial Therapy
297
Helicobacter pylori, a resilient gram-negative bacterium, can thrive in the stomach's harsh, acidic environment. Infection with H. pylori leads to a cascade of events within the stomach lining. One of the critical disruptions caused by this bacterium is the interference with somatostatin production, a hormone responsible for regulating acid secretion. This interference tips the balance, escalating acid secretion and diminishing bicarbonate levels. This imbalance compromises the defensive...
297
Antibiotic Selection
52.1K
Overview
52.1K


