Information de reference pour ce titreAccession Number: | 00019515-200404000-00009.
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Author: | Wexler, D *; Courtney, R; Richards, W; Banfield, C; Lim, J; Laughlin, M
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Institution: | Schering-Plough Research Institute, K-15-2650, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA
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Title: | |
Source: | European Journal of Pharmaceutical Sciences. 21(5):645-653, April 2004.
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Abstract: | : Posaconazole is an antifungal with a wide-spectrum of activity against common and emerging fungal pathogens. In this randomised, open-label, two-way crossover study, the potential for drug interactions with posaconazole via the cytochrome P450 (CYP450) enzyme pathway was evaluated. Thirteen subjects received posaconazole tablets (2x100 mg) once daily for 10 days or no treatment; following a 14-day washout period, subjects were crossed over to the alternate treatment. The inhibition spectra of posaconazole were examined using a cocktail of the following probe substrates: caffeine (CYP1A2), tolbutamide (CYP2C8/9), dextromethorphan (CYP2D6 and total CYP3A4), chlorzoxazone (CYP2E1), and midazolam (hepatic CYP3A4). Except for midazolam, which was intravenously infused on Day 10, the cocktail probes were administered simultaneously on Day 9 during both treatment periods. Blood and urine samples were collected at specified times to quantitate probe substrates and/or metabolites. Based on insignificant differences in mean probe ratios, posaconazole did not inhibit CYP1A2, 2C8/9, 2D6, or 2E1. However, the midazolam AUC(tf) was higher in the posaconazole than no-treatment group (93.4 ng h/ml versus 51.4 ng h/ml, P<0.01), indicating inhibition of hepatic CYP3A4. Drug interactions mediated by various CYP450 are common with the currently available triazole antifungals, however these results suggest that posaconazole may have an improved and more narrow drug interaction profile (CYP3A4 only) compared with other triazoles.
(C) 2004Elsevier, Inc.
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Author Keywords: | Antifungals; Cytochrome P450; Fungal infections; Posaconazole.
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Language: | English.
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Document Type: | Articles.
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ISSN: | 0928-0987
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NLM Journal Code: | c7r, 9317982
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DOI Number: | https://dx.doi.org/10.1016/j.ejp...- ouverture dans une nouvelle fenêtre
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