Routine laboratory screening for cyp51a-related azole resistance in Aspergillus fumigatus using Etest: Concordance with gene sequencing.

IF 2.7 3区 医学 Q3 INFECTIOUS DISEASES
Charlotte Rabault, Yann Rakotoarivony, Sandrine Houzé, Christine Bonnal, Valentin Joste
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引用次数: 0

Abstract

We evaluated the combined performance of itraconazole and voriconazole Etest® gradient concentration strips for the detection of Aspergillus fumigatus azole resistance associated with cyp51a mutations confirmed by gene sequencing. Among 118 A. fumigatus clinical isolates collected in a French center, 6 (5%) had azole resistance mutations, 5 of which were probably of environmental origin. Using recent method-dependent epidemiological cutoff values as thresholds, the combination's sensitivity and specificity were 100% [95% confidence interval 61-100] and 99% [95-100]. Our results support itraconazole and voriconazole Etest® combined use as a promising self-sufficient method for simple, efficient and reliable cyp51a-related azole-resistant A. fumigatus detection.

使用 Etest 对烟曲霉中与 CYP51A 相关的唑类抗药性进行常规实验室筛查:与基因测序的一致性。
我们评估了伊曲康唑和伏立康唑Etest®梯度浓度条在检测烟曲霉对经基因测序确认的cyp51a突变相关的唑类药物耐药性方面的组合性能。在法国一家中心收集的 118 个烟曲霉临床分离物中,有 6 个(5%)出现了唑类抗药性突变,其中 5 个可能来自环境。以近期方法依赖的流行病学临界值(ECV)为阈值,该组合的灵敏度和特异性分别为 100%[95% 置信区间 61-100] 和 99% [95-100]。我们的研究结果表明,伊曲康唑和伏立康唑 Etest® 联合使用是一种很有前途的自给自足的方法,可用于简单、高效、可靠地检测与环丙唑51a相关的耐唑型烟曲霉。
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来源期刊
Medical mycology
Medical mycology 医学-兽医学
CiteScore
5.70
自引率
3.40%
发文量
632
审稿时长
12 months
期刊介绍: Medical Mycology is a peer-reviewed international journal that focuses on original and innovative basic and applied studies, as well as learned reviews on all aspects of medical, veterinary and environmental mycology as related to disease. The objective is to present the highest quality scientific reports from throughout the world on divergent topics. These topics include the phylogeny of fungal pathogens, epidemiology and public health mycology themes, new approaches in the diagnosis and treatment of mycoses including clinical trials and guidelines, pharmacology and antifungal susceptibilities, changes in taxonomy, description of new or unusual fungi associated with human or animal disease, immunology of fungal infections, vaccinology for prevention of fungal infections, pathogenesis and virulence, and the molecular biology of pathogenic fungi in vitro and in vivo, including genomics, transcriptomics, metabolomics, and proteomics. Case reports are no longer accepted. In addition, studies of natural products showing inhibitory activity against pathogenic fungi are not accepted without chemical characterization and identification of the compounds responsible for the inhibitory activity.
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