| Comparison of plasma, venous and capillary blood levels of piperaquine in patients with uncomplicated falciparum malaria. | |
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MedLine Citation:
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PMID: 20300743 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: Dihydroartemisinin-piperaquine (DP) is a fixed-dose artemisinin-based combination treatment. Field pharmacokinetic studies would be simplified and facilitated by being able to use small volume capillary assays rather than venous blood. The aim of this study was to describe the relationship between piperaquine concentrations measured in capillary blood, venous blood and venous plasma. METHODS: Samples of plasma, whole blood obtained by venesection and capillary blood were taken simultaneously from patients with uncomplicated Plasmodium falciparum malaria treated with DP between 0 and 9 weeks after treatment. Piperaquine concentrations in venous and capillary samples were measured using solid phase extraction and analysis by liquid chromatography with ultraviolet detection. RESULTS: A total of 161 sets of the three measures were obtained from 54 patients. Piperaquine concentrations in the venous blood samples were approximately twofold higher and those in the capillary blood samples were threefold higher than the corresponding venous plasma concentrations. Capillary blood piperaquine concentrations were approximately 1.7-fold higher than venous blood concentrations, and this difference also increased with time. CONCLUSION: Differences in whole blood and plasma levels of piperaquine suggest compartmentalisation of the drug within blood cells, as also occurs with the structurally related quinoline chloroquine. The relationship between piperaquine concentrations in the venous plasma, venous blood and capillary blood is variable and unpredictable at low concentrations. However, within the range of concentrations usually present in patients between 3 and 21 days after treatment with currently recommended doses, the relationship between capillary and venous whole blood is predictable; consequently, capillary blood sampling can be used in field assessments. |
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Authors:
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Elizabeth A Ashley; Kasia Stepniewska; Niklas Lindegardh; Anna Annerberg; Joel Tarning; Rose McGready; Lucy Phaiphun; Pratap Singhasivanon; Nicholas J White; François Nosten |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-03-19 |
Journal Detail:
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Title: European journal of clinical pharmacology Volume: 66 ISSN: 1432-1041 ISO Abbreviation: Eur. J. Clin. Pharmacol. Publication Date: 2010 Jul |
Date Detail:
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Created Date: 2010-06-10 Completed Date: 2010-09-22 Revised Date: 2010-09-30 |
Medline Journal Info:
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Nlm Unique ID: 1256165 Medline TA: Eur J Clin Pharmacol Country: Germany |
Other Details:
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Languages: eng Pagination: 705-12 Citation Subset: IM |
Affiliation:
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Shoklo Malaria Research Unit, Mae Sot, Thailand. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Antimalarials / administration & dosage, analysis, blood Artemisinins / administration & dosage Blood Chemical Analysis / methods* Capillaries / chemistry* Child Child, Preschool Drug Combinations Female Fingers / blood supply Humans Malaria, Falciparum / blood*, drug therapy Male Middle Aged Phlebotomy Plasma / chemistry* Quinolines / administration & dosage, blood* Randomized Controlled Trials as Topic |
| Grant Support | |
ID/Acronym/Agency:
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//Wellcome Trust |
| Chemical | |
Reg. No./Substance:
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0/Antimalarials; 0/Artemisinins; 0/Drug Combinations; 0/Quinolines; 4085-31-8/piperaquine; 71939-50-9/dihydroquinghaosu |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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