阿醇耐药性在阿斯伯吉卢斯黄菌和相关的健身成本
Elie Djenontin1,2, Anne Debourgogne3, Bita Mousavi2
1Unité de Parasitologie-Mycologie, Département de Virologie, Bactériologie-Hygiène, Parasitologie-Mycologie, CHU Henri Mondor, AP-HP, Créteil, France.
Mycoses
|July 15, 2024
概括
阿斯伯吉卢斯黄菌中的醇抗真菌耐药性与CYP51A基因的突变有关,导致毒性降低和体外生长. 这项研究证实了体内耐药性,并为耐醇真菌感染的治疗策略提供了信息.
科学领域:
- 菌类学和传染病的研究
- 分子生物学和遗传学分子生物学和遗传学
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 阿斯伯吉卢斯黄菌中新出现的醇抗真菌药物耐药性构成了重大的临床挑战.
- 在CYP51 (细胞染色体P450) 基因的突变是对醇耐药性的假设机制,但数据有限.
- 在体外和体内,耐醇抗性Aspergillus flavus菌株的行为仍然不太清楚.
研究的目的:
- 为了比较耐醇和易受酸菌株之间的CYP51A,B和C基因序列.
- 为了调查与阿斯伯吉illus flavus中醇耐药性相关的潜在健身成本.
- 通过使用Galleria mellonella感染模型,评估voriconazole和posaconazole对抗性菌株的体内疗效.
主要方法:
- 来自七个耐药和四个易受感染的阿斯伯吉卢斯黄菌株的CYP51A,B和C基因的比较测序.
- 评估RPMI介质中的真菌生长和Galleria mellonella幼虫中的毒性,以确定健康成本.
- 在体内治疗感染Galleria mellonella幼虫的沃里康纳和波萨康纳以评估抗真菌活性.
主要成果:
- 特定的核酸替代物 (A91T,C708T,A1296T) 仅在耐药菌株的CYP51A基因中被确定.
- 耐醇Aspergillus flavus菌株在Galleria mellonella体内表现出减少的生长和减少的毒性.
- 在体内对波萨可纳的耐药性已在表现出高最小抑制度 (MIC) 值的菌株中得到证实.
结论:
- 在CYP51基因中的突变,特别是CYP51A,对阿斯伯吉illus flavus.的醇耐药性有显著的贡献.
- 需要进一步研究药物剂量,治疗持续时间,耐药性和健身成本之间的关系.
- 这些发现为开发对抗醇耐药Aspergillus flavus菌株引起的感染的治疗建议提供了基础.
关键词:
亚斯伯吉勒斯 (Aspergillus flavususus) 是一种有的植物.梅罗内拉画廊 (Galleria mellonella) 是一个著名的画廊.在CYP51的研究中,健身费用 健身费用 健身费用电阻的阻力可以更多相关视频
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