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- W3045666346 abstract "Abstract Background During antifungal prophylaxis, micafungin is generally infused IV once daily over 1 h. In practice, less-frequent dosing could improve the quality of life in patients requiring long-term treatment or prophylaxis. The feasibility of this approach was assessed using humanized doses of daily or infrequent micafungin regimens. Objectives To evaluate the effectiveness of intermittent high-dose micafungin, simulating human exposure, for prophylaxis of invasive candidiasis in a rat model of chronic Candida albicans gastrointestinal colonization and systemic dissemination. Methods Two weeks post-infection with an oral challenge of C. albicans, Sprague–Dawley rats were immunocompromised with a cytotoxic drug and a steroid. Rats received IV infusions of: daily vehicle control; daily subcutaneous micafungin (20 mg/kg SC); high-dose micafungin (20 mg/kg bolus SC + 80 mg/kg infusion/72 h, to simulate intermittent human dosing of 300 mg/72 h); or daily fluconazole by mouth (10 mg/kg PO). The effects of antifungal prophylaxis on faecal fungal burden and systemic C. albicans dissemination were evaluated. Results A rat model of chronic C. albicans gastrointestinal colonization and systemic dissemination was established, characterized by a sustained microbiological burden over 29 days and fungal recovery from normally sterile tissues. Using this model, intermittent high-dose micafungin (delivered via iPrecio pumps) to simulate humanized doses of 300 mg/72 h was significantly more effective than vehicle control, as effective as once-daily micafungin and similar to daily fluconazole at reducing faecal burden and preventing systemic dissemination. Conclusions These data indicate that intermittent high-dose micafungin can be as effective as daily therapy, supporting clinical assessment in high-risk patients requiring long-term antifungal prophylaxis." @default.
- W3045666346 created "2020-08-03" @default.
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- W3045666346 date "2020-07-28" @default.
- W3045666346 modified "2023-10-17" @default.
- W3045666346 title "Intermittent micafungin for prophylaxis in a rat model of chronic Candida albicans gut colonization" @default.
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- W3045666346 doi "https://doi.org/10.1093/jac/dkaa243" @default.
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