Rare/cryptic Aspergillus species infections and importance of antifungal susceptibility testing.

Autor: Tsang CC; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong., Tang JYM; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong., Ye H; Department of Clinical Microbiology and Infection Control, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China., Xing F; Department of Clinical Microbiology and Infection Control, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China., Lo SKF; Department of Clinical Microbiology and Infection Control, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China., Xiao C; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.; Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.; Department of Clinical Microbiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China., Han L; Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.; Department of Clinical Microbiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China., Wu AKL; Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong., Ngan AHY; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong., Law KC; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.; Department of Clinical Pathology, Tuen Mun Hospital, Tuen Mun, Hong Kong., To YN; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.; Department of Clinical Pathology, Tuen Mun Hospital, Tuen Mun, Hong Kong., Sze DTT; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.; Department of Pathology, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong., Chim OHY; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong., Hui TWS; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.; Department of Clinical Pathology, Tuen Mun Hospital, Tuen Mun, Hong Kong., Leung CWH; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong., Zhu T; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.; School of Public Health, Southern Medical University, Guangzhou, China., Yao C; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.; Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China., Tse BPH; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.; Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong., Lau SKP; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.; Department of Clinical Microbiology and Infection Control, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China., Woo PCY; Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.; Department of Clinical Microbiology and Infection Control, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China.
Jazyk: angličtina
Zdroj: Mycoses [Mycoses] 2020 Dec; Vol. 63 (12), pp. 1283-1298. Date of Electronic Publication: 2020 Oct 03.
DOI: 10.1111/myc.13158
Abstrakt: Background: The number of patients infected with Aspergillus rose dramatically in recent years. However, studies on the clinical spectrum and antifungal susceptibilities of non-classical (non-fumigatus, non-flavus, non-niger and non-terreus) pathogenic Aspergillus species are very limited.
Objectives: We examined the clinical spectrum and antifungal susceptibilities of 34 non-duplicated, non-classical Aspergillus isolates collected from Hong Kong, Shenzhen and Shanghai.
Methods: The Aspergillus isolates were identified by internal transcribed spacer, partial BenA and partial CaM sequencing and phylogenetic analyses. Susceptibility testing against eight antifungals was performed following the European Committee for Antimicrobial Susceptibility Testing's methodology.
Results: The 34 Aspergillus isolates were identified as 14 different rare/cryptic species of four sections (Flavi [n = 8], Nidulantes [n = 8], Nigri [n = 17] and Restricti [n = 1]). Except for one patient whose clinical history could not be retrieved, 72.7% of the remaining patients had underlying conditions predisposing them to Aspergillus infections. The most common diseases were pulmonary infections (n = 15), followed by skin/nail infections (n = 6), chronic otitis externa and/or media (n = 5), wound infections (n = 2) and mastoiditis/radionecrosis (n = 1), while three were colonisations. Five patients succumbed due to the infections during the admission, and another two died 5 years later because of chronic pulmonary aspergillosis. Antifungal susceptibility testing showed that they possessed different susceptibility profiles compared to the classical Aspergillus species. The majority of isolates characterised were sensitive or wild-type to amphotericin B. The minimum effective concentrations for all the three echinocandins were also low.
Conclusion: Susceptibility testing should be performed for infections due to these rare/cryptic Aspergillus species to guide proper patient management.
(© 2020 Wiley-VCH GmbH.)
Databáze: MEDLINE
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