在M.中非同义ERG11突变. 限制和限制M. arunalokei:对醇敏感性的影响
Cheryl Leong1, Wisely Chua1, Cheng-Shoong Chong2
1A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR) & Skin Research Institute of Singapore (SRIS), Singapore, Singapore.
Microbiology spectrum
|May 15, 2025
概括
马拉西亚酵母的抗真菌耐药性与ERG11基因突变和基因表达增加有关. 敏感性取决于内在因素,如突变和外在因素,如皮肤状况.
科学领域:
- 医学真菌学 医学真菌学
- 皮肤病学 皮肤病学
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 马拉塞西亚酵母是常见的皮肤居民,导致表面真菌菌.
- 醇抗真菌药物是第一线治疗,向埃尔戈斯特醇合成.
- ERG11基因突变和过度表达是对醇耐药性的关键机制.
研究的目的:
- 调查从健康皮肤中分离的马拉塞西亚菌的抗真菌敏感性概况.
- 为了识别与醇耐药性相关的新型ERG11突变.
- 了解影响抗真菌耐药性的综合因素.
主要方法:
- 培养和敏感性测试Malassezia restrita和Malassezia arunalokei的分离物.
- 基因组分析以确定ERG11突变.
- 基因表达和排泄活动测试.
主要成果:
- 凯托可纳和伊特拉可纳对两种物种都有很高的疗效.
- 一些分离物体对常见的醇 (如克洛特里马) 的敏感性降低.
- 在不太敏感的菌株中观察到新的ERG11突变 (例如R88C) 和高ERG11/efflux表达.
- 在QK178RQ ERG11变异中,可以区分M.restricta和M.arunalokei.
结论:
- 抗真菌敏感性是多因素的,涉及内在因素 (突变,基因表达,排泄) 和外在因素 (皮肤状况,先前暴露).
- 皮肤微生物组充当新抗真菌耐药机制和菌株表型的出现的储存库.
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