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  • Title: Oral administration of itraconazole solution has superior efficacy in experimental oral and oesophageal candidiasis in mice than its intragastric administration.
    Author: Ishibashi H, Uchida K, Nishiyama Y, Yamaguchi H, Abe S.
    Journal: J Antimicrob Chemother; 2007 Feb; 59(2):317-20. PubMed ID: 17107970.
    Abstract:
    OBJECTIVE: The therapeutic activities of cyclodextrin-associated itraconazole oral solution (itraconazole OS) by two administration routes in experimental oral and oesophageal candidiasis in mice were examined and compared. METHODS: Using experimental oral and oesophageal candidiasis models in ICR mice, we investigated the efficacy of oral and intragastric administration of itraconazole OS and checked the concentration of itraconazole and its metabolite hydroxyitraconazole (OH-itraconazole) in tongues or oesophagus tissue after administration of itraconazole OS. RESULTS: Oral administration of itraconazole OS at doses of 0.8, 4.0 or 20 mg/kg/day clearly decreased the number of viable Candida albicans cells in the oral cavity of mice with oral candidiasis in a dose-dependent manner at 3 days after infection. Intragastric administration of itraconazole OS at doses of 4 and 20 mg/kg/day once a day were also effective but to a lesser degree than that of oral administration. In the oesophageal candidiasis model, oral administration of itraconazole OS displayed superior therapeutic efficacy to the intragastric route. In coincidence with the greater efficacy, itraconazole was detected in lesional tissues after oral administration of itraconazole OS. CONCLUSIONS: Oral administration of itraconazole OS displayed therapeutic efficacy against murine oral and oesophageal candidiasis superior to that achieved by intragastric administration. This can be explained by there being higher concentrations of itraconazole in tongues or oesophagus tissues after administration of the suspension by the oral route.
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