Intrasubject Variability in Intravenous and Oral Probes for Hepatic and First-Pass CYP3A Activity.
Autor: | Kharasch ED; Department of Anesthesiology, Duke University School of Medicine, 905 S. LaSalle St, GSRB1 Room 2031, Box 3094, Durham, NC, 27710, USA. evan.kharasch@duke.edu.; Bermaride LLC, Durham, NC, 27712, USA. evan.kharasch@duke.edu., Hoffer C; Department of Anesthesiology, University of Washington, Seattle, WA, USA., Bedynek P; Department of Anesthesiology, University of Washington, Seattle, WA, USA. |
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Jazyk: | angličtina |
Zdroj: | Clinical pharmacokinetics [Clin Pharmacokinet] 2024 Aug; Vol. 63 (8), pp. 1121-1135. Date of Electronic Publication: 2024 Jul 29. |
DOI: | 10.1007/s40262-024-01406-y |
Abstrakt: | Background and Objectives: Clearances and the area under the plasma concentration-time curve extrapolated to infinity (AUC Methods: Twelve volunteers were studied in a four-period protocol, with each period identical and separated by approximately 2 weeks. In each period, participants received 1 mg IV midazolam then 15 μg/kg IV alfentanil 1 h later. The next day, they received 3 mg oral midazolam then 60 μg/kg oral alfentanil. Plasma drug concentrations were determined by liquid chromatography-mass spectrometry (LCMS). Dark-adapted pupil diameters were measured coincident with blood sampling. Plasma concentrations and pupil effects (miosis) were analyzed using noncompartmental methods. The results were the coefficient of variation (%CV, mean ± SD) across four sessions in 12 participants. Results: For IV midazolam: AUC Conclusions: Midazolam and alfentanil had comparable intrasubject variabilities of clearance and AUC (© 2024. The Author(s), under exclusive licence to Springer Nature Switzerland AG.) |
Databáze: | MEDLINE |
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