期刊
CHEMISTRY & BIODIVERSITY
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cbdv.202300151
关键词
antifungal; eumycetoma; naphthazarin; naphthoquinone; neglected tropical disease
In this study, a series of natural naphthoquinones and anthraquinones were evaluated for their activity against the most common causative agent of eumycetoma. Naphthazarin was identified as a considerably active antifungal compound against Madurella mycetomatis, with reduced toxicity to Galleria mellonella larvae.
Eumycetoma, the fungal form of the neglected tropical disease mycetoma, is a crippling infectious disease with low response rates to currently available antifungal drugs. In this study, a series of natural naphthoquinones and anthraquinones was evaluated for their activity against Madurella mycetomatis, which is the most common causative agent of eumycetoma. The metabolic activity of Madurella mycetomatis as well as the viability of Galleria mellonella larvae upon treatment with quinones was investigated. Several hydroxy-substituted naphthoquinones exhibited activity against Madurella mycetomatis. In particular, naphthazarin (5,8-dihydroxy-1,4-naphthoquinone) was identified as a considerably active antifungal compound against Madurella mycetomatis (IC50=1.4 mu M), while it showed reduced toxicity to Galleria mellonella larvae, which is a well-established in vivo invertebrate model for mycetoma drug studies.
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