naphthoquinones and Mycetoma

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 (IC

Topics: Animals; Anthraquinones; Antifungal Agents; Coleoptera; Larva; Madurella; Moths; Mycetoma; Naphthoquinones

The use of natural, nontoxic, convenient and eco-friendly dyes for histopathological diagnosis avoids some of the synthetic dyes' hazards. I used an aqueous extract of henna at a concentration of 20 g/ml and acidified with acetic acid to stain mycetoma grains. Henna stained mycetoma grains orange-red to brown. The engulfed mycetoma grains within inflammatory cells stained well with henna extract compared to hematoxylin and eosin (H & E) and hexamine silver.

Topics: Coloring Agents; Humans; Mycetoma; Naphthoquinones; Staining and Labeling