Population pharmacokinetic assessment of the effect of food on piperaquine bioavailability in patients with uncomplicated malaria
Previously published literature reports various impacts of food on the oral bioavailability of piperaquine. The aim of this study was to use a population modeling approach to investigate the impact of concomitant intake of a small amount of food on piperaquine pharmacokinetics. This was an open, ran...
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th-mahidol.347272018-11-09T10:12:07Z Population pharmacokinetic assessment of the effect of food on piperaquine bioavailability in patients with uncomplicated malaria Joel Tarning Niklas Lindegardh Khin Maung Lwin Anna Annerberg Lily Kiricharoen Elizabeth Ashley Nicholas J. White François Nosten Nicholas P.J. Day Mahidol University Nuffield Department of Clinical Medicine Medicine Pharmacology, Toxicology and Pharmaceutics Previously published literature reports various impacts of food on the oral bioavailability of piperaquine. The aim of this study was to use a population modeling approach to investigate the impact of concomitant intake of a small amount of food on piperaquine pharmacokinetics. This was an open, randomized comparison of piperaquine pharmacokinetics when administered as a fixed oral formulation once daily for 3 days with (n = 15) and without (n = 15) concomitant food to patients with uncomplicated Plasmodium falciparum malaria in Thailand. Nonlinear mixed-effects modeling was used to characterize the pharmacokinetics of piperaquine and the influence of concomitant food intake. A modified Monte Carlo mapped power approach was applied to evaluate the relationship between statistical power and various degrees of covariate effect sizes of the given study design. Piperaquine population pharmacokinetics were described well in fasting and fed patients by a three-compartment distribution model with flexible absorption. The final model showed a 25% increase in relative bioavailability per dose occasion during recovery from malaria but demonstrated no clinical impact of concomitant intake of a low-fat meal. Body weight and age were both significant covariates in the final model. The novel power approach concluded that the study was adequately powered to detect a food effect of at least 35%. This modified Monte Carlo mapped power approach may be a useful tool for evaluating the power to detect true covariate effects in mixed-effects modeling and a given study design. A small amount of food does not affect piperaquine absorption significantly in acute malaria. Copyright © 2014 Tarning et al. 2018-11-09T02:57:47Z 2018-11-09T02:57:47Z 2014-01-01 Article Antimicrobial Agents and Chemotherapy. Vol.58, No.4 (2014), 2052-2058 10.1128/AAC.02318-13 10986596 00664804 2-s2.0-84896981219 https://repository.li.mahidol.ac.th/handle/123456789/34727 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84896981219&origin=inward |
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Medicine Pharmacology, Toxicology and Pharmaceutics Joel Tarning Niklas Lindegardh Khin Maung Lwin Anna Annerberg Lily Kiricharoen Elizabeth Ashley Nicholas J. White François Nosten Nicholas P.J. Day Population pharmacokinetic assessment of the effect of food on piperaquine bioavailability in patients with uncomplicated malaria |
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Previously published literature reports various impacts of food on the oral bioavailability of piperaquine. The aim of this study was to use a population modeling approach to investigate the impact of concomitant intake of a small amount of food on piperaquine pharmacokinetics. This was an open, randomized comparison of piperaquine pharmacokinetics when administered as a fixed oral formulation once daily for 3 days with (n = 15) and without (n = 15) concomitant food to patients with uncomplicated Plasmodium falciparum malaria in Thailand. Nonlinear mixed-effects modeling was used to characterize the pharmacokinetics of piperaquine and the influence of concomitant food intake. A modified Monte Carlo mapped power approach was applied to evaluate the relationship between statistical power and various degrees of covariate effect sizes of the given study design. Piperaquine population pharmacokinetics were described well in fasting and fed patients by a three-compartment distribution model with flexible absorption. The final model showed a 25% increase in relative bioavailability per dose occasion during recovery from malaria but demonstrated no clinical impact of concomitant intake of a low-fat meal. Body weight and age were both significant covariates in the final model. The novel power approach concluded that the study was adequately powered to detect a food effect of at least 35%. This modified Monte Carlo mapped power approach may be a useful tool for evaluating the power to detect true covariate effects in mixed-effects modeling and a given study design. A small amount of food does not affect piperaquine absorption significantly in acute malaria. Copyright © 2014 Tarning et al. |
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Mahidol University |
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Mahidol University Joel Tarning Niklas Lindegardh Khin Maung Lwin Anna Annerberg Lily Kiricharoen Elizabeth Ashley Nicholas J. White François Nosten Nicholas P.J. Day |
format |
Article |
author |
Joel Tarning Niklas Lindegardh Khin Maung Lwin Anna Annerberg Lily Kiricharoen Elizabeth Ashley Nicholas J. White François Nosten Nicholas P.J. Day |
author_sort |
Joel Tarning |
title |
Population pharmacokinetic assessment of the effect of food on piperaquine bioavailability in patients with uncomplicated malaria |
title_short |
Population pharmacokinetic assessment of the effect of food on piperaquine bioavailability in patients with uncomplicated malaria |
title_full |
Population pharmacokinetic assessment of the effect of food on piperaquine bioavailability in patients with uncomplicated malaria |
title_fullStr |
Population pharmacokinetic assessment of the effect of food on piperaquine bioavailability in patients with uncomplicated malaria |
title_full_unstemmed |
Population pharmacokinetic assessment of the effect of food on piperaquine bioavailability in patients with uncomplicated malaria |
title_sort |
population pharmacokinetic assessment of the effect of food on piperaquine bioavailability in patients with uncomplicated malaria |
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2018 |
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https://repository.li.mahidol.ac.th/handle/123456789/34727 |
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1763494453006303232 |