Publication: Population pharmacokinetics of piperaquine after two different treatment regimens with dihydroartemisinm-piperaquine in patients with Plasmodium falciparum malaria in Thailand
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Issued Date
2008-03-01
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ISSN
00664804
Other identifier(s)
2-s2.0-40549113955
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Mahidol University
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SCOPUS
Bibliographic Citation
Antimicrobial Agents and Chemotherapy. Vol.52, No.3 (2008), 1052-1061
Suggested Citation
J. Tarning, E. A. Ashley, N. Lindegardh, K. Stepniewska, L. Phaiphun, N. P J Day, R. McGready, M. Ashton, F. Nosten, N. J. White Population pharmacokinetics of piperaquine after two different treatment regimens with dihydroartemisinm-piperaquine in patients with Plasmodium falciparum malaria in Thailand. Antimicrobial Agents and Chemotherapy. Vol.52, No.3 (2008), 1052-1061. doi:10.1128/AAC.00955-07 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/19759
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Title
Population pharmacokinetics of piperaquine after two different treatment regimens with dihydroartemisinm-piperaquine in patients with Plasmodium falciparum malaria in Thailand
Abstract
The population pharmacokinetics of piperaquine in adults and children with uncomplicated Plasmodium falciparum malaria treated with two different dosage regimens of dihydroartemisinin-piperaquine were characterized. Piperaquine pharmacokinetics in 98 Burmese and Karen patients aged 3 to 55 years were described by a two-compartment disposition model with first-order absorption and interindividual random variability on all parameters and were similar with the three- and four-dose regimens. Children had a lower body weight-normalized oral clearance than adults, resulting in longer terminal elimination half-lives and higher total exposure to piperaquine (area under the concentration-time curve from 0 to 63 days [AUCday 0-63]). However, children had lower plasma concentrations in the therapeutically relevant posttreatment prophylactic period (AUCday 3-20) because of smaller body weight-normalized central volumes of distribution and shorter distribution half-lives. Our data lend further support to a simplified once-daily treatment regimen to improve treatment adherence and efficacy and indicate that weight-adjusted piperaquine doses in children may need to be higher than in adults. Copyright © 2008, American Society for Microbiology. All Rights Reserved.