Isolation of triazole-resistant Aspergillus fumigatus harbouring cyp51A mutations from five patients with invasive pulmonary aspergillosis in Yunnan, China
MYCOLOGY-AN INTERNATIONAL JOURNAL ON FUNGAL BIOLOGY(2024)
Abstract
Invasive aspergillosis (IA) is the most severe type of Aspergillus infection. Yunnan has developed agriculture, and the proportion of triazole-resistant A. fumigatus induced by triazole fungicides is much higher than that in other regions of China. Inhalation of triazole-resistant A. fumigatus is one of the main factors inducing IA. We gathered five strains of A. fumigatus from the sputum or bronchoalveolar lavage fluid (BALF) of patients with IA in Yunnan. Subsequent testing showed that all of these strains were resistant to triazoles and harboured mutations in the tandem repeat sequence of the cyp51A promoter region, suggesting that they may be triazole-resistant A. fumigatus present in the environment.
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Key words
Invasive aspergillosis,Aspergillus fumigatus,triazole-resistant,cyp51A mutation
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