An antifungal drug, itraconazole (ITZ) is effective for chromomycosis patients, but the distribution of ITZ and its metabolite, hydroxy-intraconazole (OH-ITZ) is unclear in pathological tissues. This study investigated how much ITZ and OH-ITZ accumulated in the lesional tissues of chromomycosis and non-lesional skin after oral treatment with ITZ. We determined the concentrations of ITZ and OH-ITZ in the lesional tissues of chromomycosis by Foncecaea pedrosoi and non-lesional skin after oral treatment with a total dose of 2.3g of ITZ. ITZ concentration was significantly higher in pathological skin than non-pathological skin. The ITZ concentration in the lesional tissues was higher in the central site than in the marginal site. No difference was seen in the OH-ITZ concentrations among three skin parts, the center and the margin in lesional skin, and non-lesional skin adjacent to the lesion. This study showed higher concentrations of ITZ in pathological tissues than in non-pathological tissues.
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