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Oral bioavailability in pigs of a miconazole/Hydroxypropyl-γ-cyclodextrin/ L-tataric acid inclusion complex produced by supercritical carbon dioxide processing

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Abstract

The objective of this study was to determine the pharmacokinetic parameters of miconazole after oral administration of a miconazole/hydroxypropyl-γ-cyclodextrin(HPγCD)/ L-tartaric acid inclusion complex produced by supercritical carbon dioxide processing. The pharmacokinetics of the miconazole ternary complex (CPLX), of the corresponding physical mixture (PHYS), and of miconazole alone (MICO) were compared after oral administration. Six mixed-breed pigs received each formulation as a single dose (10 mg miconazole/kg) in a crossover design. Miconazole plasma concentrations were determined by a high-performance liquid chromatography method. Preliminary in vitro dissolution data showed that CPLX exhibits a faster and higher dissolution rate than either PHYS or MICO. Following CPLX oral administration, mean area under the plasma concentration curve (AUC0−∞) for miconazole was 95.0±55.8 μg/min/mL, with the peak plasma concentration (Cmax 0.59±0.39 μg/mL) at 19.30 minutes. The AUC0−∞ and Cmax values were significantly higher than those after oral administration of PHYS (AUC0−∞ 38.5±12.7 μg/min/mL and Cmax 0.24±0.08 μg/mL;P<.1) and of MICO (AUC0−∞ 24.1±14.0 μg/min/mL and Cmax 0.1±0.05 μg/mL;P<.1). There were also significant differences between PHYS and MICO (P<.1). The results of the study indicate that CPLX shows improved dissolution properties and a higher relative oral bioavailability compared with PHYS and MICO.

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Authors and Affiliations

  1. Laboratory of Pharmaceutical Technology, Department of Pharmacy, University of Liège, CHU-Tour 4, Bât B36 Avenue de l'Hopital, 1, B-4000, Liège 1, Belgium

    Valéry Barillaro, Brigitte Evrard, Luc Delattre & Géraldine Piel

Authors
  1. Valéry Barillaro
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  2. Brigitte Evrard
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  3. Luc Delattre
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  4. Géraldine Piel
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Correspondence to Valéry Barillaro.

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Published: August 18, 2005

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Barillaro, V., Evrard, B., Delattre, L. et al. Oral bioavailability in pigs of a miconazole/Hydroxypropyl-γ-cyclodextrin/ L-tataric acid inclusion complex produced by supercritical carbon dioxide processing. AAPS J 7, 16 (2005). https://doi.org/10.1208/aapsj070116

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  • DOI: https://doi.org/10.1208/aapsj070116

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