诺卡迪亚种类的抗菌活性. 和Streptomyces sp. 这两种类型. 关于导致新生儿败血症的多药耐药病原体
Janette Berenice González-Nava1, Gauddy Lizeth Manzanares-Leal1, Luis Ángel Zapi-Colín2
1Universidad Autónoma del Estado de México, Facultad de Medicina, Laboratorio de Investigación en Microbiología Médica y Ambiental, Toluca, Mexico.
Revista do Instituto de Medicina Tropical de Sao Paulo
|July 31, 2024
概括
从临床病例中分离出来的Actinobacteria菌株显示出针对导致新生儿败血症的多药耐药细菌的新抗菌药物的潜力. 一个菌株,Streptomyces albus,对关键病原体表现出显著的抗菌活性.
科学领域:
- 微生物学 微生物学
- 生物技术是生物技术.
- 药理学 药理学是指药理学的学科.
背景情况:
- 新生儿败血症构成重大威胁,特别是在资源较少的环境中,随着抗菌素耐药性的增加,标准治疗变得无效.
- 耐多药细菌,如克莱布西埃拉种类,大肠杆菌和金黄色葡萄球菌是新生儿败血症发病率和死亡率的主要贡献者.
- 迫切需要新型抗菌剂和替代源来对抗耐药细菌感染.
研究的目的:
- 为了研究从临床行为瘤病例中分离出来的动态细菌菌株的抗菌潜力.
- 为了确定这些菌株中生物合成基因集群 (PKS-I,PKS-II,NRPS-I,NRPS-II) 的存在,用于二次代谢物生产.
- 评估这些动态细菌菌株对涉及新生儿败血症的多药耐药细菌的疗效.
主要方法:
- 来自临床菌瘤病例的15种动态细菌菌株使用PCR进行了生物合成基因集群的选.
- 使用垂直交叉条纹方法对五种多药耐药细菌菌株进行了抗菌活性评估.
- 使用16S rRNA基因序列分析进行了菌株鉴定.
主要成果:
- 所有选的动态细菌都具有生物合成系统,NRPS-I是最常见的 (100%).
- 在27%的菌株中观察到NRPS-I和PKS-II的组合.
- 所有15种actinobacterial菌株都表现出对测试的多药耐药细菌的抗菌活性.
- 菌株Streptomyces albus 94.1572显示出最高的抗菌活性,抑制了所有五种耐药菌株.
结论:
- 从临床来源中分离出来的活性细菌是新型抗微生物化合物的有希望的来源.
- 鉴定到的生物合成基因集群表明,产生具有抗菌性质的多种二次代谢物具有很高的潜力.
- 白斑菌 (Streptomyces albus 94.1572) 值得进一步研究,因为它可能是针对多抗药新生儿败血症病原体的潜在治疗剂.
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