基因多样性和环境的抗真菌易感性Cryptococcus neoformans和Cryptococcus gattii物种复合体
Mohamed Taha1, Yasmine H Tartor2, Rana M Abd Elaziz3
1Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt.
IMA fungus
|July 26, 2024
概括
这项研究调查了埃及的Cryptococcus neoformans和C. gattii,揭示了遗传多样性和抗真菌耐药性. 富可纳和安福特里辛B的组合显示出对所有基因型的协同效应.
科学领域:
- 菌类学 菌类学是指菌类学.
- 传染性疾病 传染性疾病
- 环境微生物学 环境微生物学
背景情况:
- 由Cryptococcus neoformans和C. gattii引起的Cryptococcosis在全球范围内是一个重要的机会性感染.
- 监测环境中孤立的抗真菌易感性对于管理密码菌病和检测耐药性至关重要.
- 埃及环境Cryptococcus物种的数据有限.
研究的目的:
- 来自埃及环境来源的C. neoformans和C. gattii的遗传多样性.
- 分析它们的抗真菌易感性,并评估抗真菌组合.
- 为了将敏感性模式与已识别的基因型相关联.
主要方法:
- 环境样本 (鸟类和树木) 被收集并选Cryptococcus spp.
- 用M13 PCR指纹和URA5基因RFLP分析进行基因型鉴定.
- 进行了抗真菌敏感性测试 (MICs) 和分数抑制度 (FIC) 指数.
主要成果:
- 这是Cryptococcus spp. 在14.5%的样本中发现,其中44个来自鸟类和14个来自树木的隔离物.
- 基因型检测发现了C. neoformans VNI,VNII,VNIII和C. gattii VGI,VGII,VGIII的基因型.
- 观察到对醇,安波特素B和特尔比纳的耐药性;C. gattii VGIII对可纳和伊特拉可纳的敏感性降低.
- 发现了某些抗真菌药物MIC之间的显著相关性.
- 可纳 + 二乙组合显示对所有测试的基因型具有协同作用.
结论:
- 这项研究提供了对埃及环境中C. neoformans和C. gattii的基因构成和抗真菌耐药性的见解.
- 这些发现突显了抗真菌耐药性的潜力和联合抗真菌治疗的疗效.
- 建议进一步研究埃及环境和临床隔离的相关性.
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