Azole-Containing Agar Plates and Antifungal Susceptibility Testing for the Detection of Azole-Resistant Aspergillus Species in Hospital Environmental Samples

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dc.contributor.authorGhazanfari, Mona
dc.contributor.authorAbastabar, Mahdi
dc.contributor.authorHaghani, Iman
dc.contributor.authorMoazeni, Maryam
dc.contributor.authorHedayati, Shakiba
dc.contributor.authorYaalimadad, Sanaz
dc.contributor.authorShirvan, Bahador Nikoueian
dc.contributor.authorBongomin, Felix
dc.contributor.authorHedayati, Mohammad T.
dc.date.accessioned2024-02-05T13:11:11Z
dc.date.available2024-02-05T13:11:11Z
dc.date.issued2023
dc.description.abstractThe indoor environment of hospitals should be considered as an important reservoir of azole resistant Aspergillus species. In this study, we evaluated azole-containing agar plates (ACAPs) and antifungal susceptibility testing (AFST) for the detection of azole-resistant Aspergillus species in hospital environmental samples. Between September 2021 and January 2022, environmental samples (108 instruments and 12 air) were collected from different wards of 4 educational hospitals in Mazandaran province, Iran. All samples were cultured using ACAPs. Recovered Aspergillus isolates were molecularly identified at species level using partial DNA sequencing of beta-tubulin gene. AFST of Aspergillus species was performed using the Clinical and Laboratory Standards Institute M38-A3 guideline. Screening for cyp51A mutations was also done. Overall, 18 (15.0%) isolates of Aspergillus species were recovered from ACAPs, of which Aspergillus tubingensis (50%) and Aspergillus fumigatus (38.9%) were the commonest species. No isolate of Aspergillus species grew on posaconazole (PCZ)-containing agar plates. Among the 18 Aspergillus isolated species from ACAPs, 83.3% were related to samples from instruments. Of the nine isolates of A. tubingensis, 22.2% and 44.4% isolates showed minimum inhibitory concentration (MIC) = 2 mg/mL against voriconazole (VCZ) and itraconazole, respectively; and 44.4% isolates showed MIC= 1 mg/mL against PCZ. Of the seven isolates of A. fumigatus, one (14.3%) was resistant to VCZ. This isolate showed F46Y, G54E, G138C, M172V, M220I, D255E, T289F, G432C, and G448S mutation in cyp51A. Our finding showed the emergence of high MICs in cryptic and non-fumigatus species of Aspergillus such as A. tubingensis and VCZ resistance in A. fumigatus in indoor environment of hospitalsen_US
dc.description.sponsorshipThis study was supported by a research fund (No. 5219)from Invasive Fungi Research Center of Mazandaran University of Medical Sciences, Sari, Iran.en_US
dc.identifier.citationGhazanfari, M., Abastabar, M., Haghani, I., Moazeni, M., Hedayati, S., Yaalimadad, S., ... & Hedayati, M. T. (2023). Azole-Containing Agar Plates and Antifungal Susceptibility Testing for the Detection of Azole-Resistant Aspergillus Species in Hospital Environmental Samples. Microbial Drug Resistance, 29(12), 561-567.en_US
dc.identifier.uri: 10.1089/mdr.2023.0002
dc.identifier.urihttps://hdl.handle.net/20.500.14270/459
dc.language.isoenen_US
dc.publisherMary Ann Lieberten_US
dc.relation.ispartofseriesMICROBIAL DRUG RESISTANCE;Volume 29, Number 12, 2023
dc.subjectAspergillusen_US
dc.subjectazole resistanceen_US
dc.subjectazole-containing agar platesen_US
dc.subjectantifungal susceptibility testingen_US
dc.titleAzole-Containing Agar Plates and Antifungal Susceptibility Testing for the Detection of Azole-Resistant Aspergillus Species in Hospital Environmental Samplesen_US
dc.typeArticleen_US

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