Experimental Phaeohyphomycosis of Curvularia lunata

Author:

Al-Odaini Najwa,Pan Kai-su,Liao Liu-wei,Mo Nan-fang,Jiang Zhi-wen,Li Tian-tian,Li Xiu-ying,He Xiao-juan,Zheng Dong-yan,Cao Cun-wei

Abstract

Originally considered to be a plant pathogen, reports of phaeohyphomycosis due to Curvularia lunata (C. lunata) in animals and humans are increasing. However, studies on the pathogenesis, virulence, and epidemiology of C. lunata have rarely been discussed. In the present study, BALB/c mice were experimentally inoculated with C. lunata suspension by different routes and the course of infection was evaluated. In addition, the in vitro antifungal susceptibility of C. lunata against six commonly used antifungals was evaluated using the microdilution method. Inoculation resulted in skin lesions in animals inoculated intraperitonially and subcutaneously. Infection was confirmed by both mycological and histopathologic examination. C. lunata spores and hyphae were detected in the histopathologic sections stained with hexamine silver staining. In addition, voriconazole (VRC) demonstrated greater activity against C. lunata when compared to the other antifungals, whereas fluconazole (FLC) was the least active antifungal with a minimum inhibitory concentration (MIC) range of 8–16 μg/mL. Further studies are necessary to understand the pathogenicity of C. lunata and uncover the mystery of this fungus.

Publisher

MDPI AG

Subject

General Medicine

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