Abstract：
:The combination piperaquine and dihydroartemisinin is emerging as first line treatment of uncomplicated falciparum malaria in Southeast Asia. The aim of this study was to determine the influence of a standard Vietnamese meal on the single-dose pharmacokinetics of piperaquine when administered in combination with dihydroartemisinin, and to gain extended data on the terminal half-life of piperaquine in healthy Vietnamese volunteers. Subjects were randomly assigned to take a single oral dose of piperaquine phosphate (640 mg)+dihydroartemisinin (80 mg) together with a standardized Vietnamese meal (n=16) or to remain fasting for 4h following drug intake (n=16). Frequent blood sampling was conducted during 36 h, followed by weekly samples for 7 weeks. The pharmacokinetic parameters of piperaquine were determined by noncompartmental analysis. The median (80% central range) AUC(0-last) was 11.5 (6.9-17.3)h mg/L in fed and 13.9 (2.8-19.3)h mg/L in fasting subjects, indicating a considerable variability in exposure in both groups. The estimated overall oral clearance was 0.27 (0.12-1.49)L/(h kg), the volume of distribution during the terminal elimination phase was 230 (102-419)L/kg and estimated terminal half-life was 18 (5-93) days. This study did not demonstrate a significant impact of a standardized Vietnamese meal on the oral absorption of piperaquine.
journal_name
Acta Tropjournal_title
Acta tropicaauthors
Hai TN,Hietala SF,Van Huong N,Ashton Mdoi
10.1016/j.actatropica.2008.05.013subject
Has Abstractpub_date
2008-08-01 00:00:00pages
145-9issue
2eissn
0001-706Xissn
1873-6254pii
S0001-706X(08)00148-4journal_volume
107pub_type
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