Evidence map›Paper›PMID 20713675›Full record

Trial reportAntimicrobial agents and chemotherapy2010

Population pharmacokinetics and pharmacodynamics of artemether and lumefantrine during combination treatment in children with uncomplicated falciparum malaria in Tanzania.

Sofia Friberg Hietala, Andreas Mårtensson, Billy Ngasala, Sabina Dahlström, Niklas Lindegårdh, Anna Annerberg, Zul Premji, Anna Färnert, Pedro Gil, Anders Björkman and 1 more

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Antimicrobial agents and chemotherapy, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 3 pooled it
4.6field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 3 syntheses or guidelines pooled it, 52 citations in OpenAlex.

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  13. Artemisinin-resistant malaria.Clinical microbiology reviews · 2024
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 7 institutions in 5 countries.

Sofia Friberg HietalaDepartment of Pharmacology, University of Gothenburg, Gothenburg, Sweden. sofiafriberghietala@gmail.com
Andreas Mårtensson
Billy Ngasala
Sabina Dahlström
Niklas Lindegårdh
Anna Annerberg
Zul Premji
Anna Färnert
Pedro Gil
Anders Björkman
Michael Ashton
Karolinska University Hospital · SEMuhimbili University of Health and Allied Sciences · TZUniversity of Gothenburg · SEKarolinska Institutet · SEMahidol Oxford Tropical Medicine Research Unit · THMahidol University · THUniversity of Algarve · PT

Funding

Wellcome TrustWellcome Trust 077166/Z/05/Z
6 · The paper itself

Abstract

The combination of artemether (ARM) and lumefantrine is currently the first-line treatment of uncomplicated falciparum malaria in mainland Tanzania. While the exposure to lumefantrine has been associated with the probability of adequate clinical and parasitological cure, increasing exposure to artemether and the active metabolite dihydroartemisinin (DHA) has been shown to decrease the parasite clearance time. The aim of this analysis was to describe the pharmacokinetics and pharmacodynamics of artemether, dihydroartemisinin, and lumefantrine in African children with uncomplicated malaria. In addition to drug concentrations and parasitemias from 50 Tanzanian children with falciparum malaria, peripheral parasite densities from 11 asymptomatic children were included in the model of the parasite dynamics. The population pharmacokinetics and pharmacodynamics of artemether, dihydroartemisinin, and lumefantrine were modeled in NONMEM. The distribution of artemether was described by a two-compartment model with a rapid absorption and elimination through metabolism to dihydroartemisinin. Dihydroartemisinin concentrations were adequately illustrated by a one-compartment model. The pharmacokinetics of artemether was time dependent, with typical oral clearance increasing from 2.6 liters/h/kg on day 1 to 10 liters/h/kg on day 3. The pharmacokinetics of lumefantrine was sufficiently described by a one-compartment model with an absorption lag time. The typical value of oral clearance was estimated to 77 ml/h/kg. The proposed semimechanistic model of parasite dynamics, while a rough approximation of the complex interplay between malaria parasite and the human host, adequately described the early effect of ARM and DHA concentrations on the parasite density in malaria patients. However, the poor precision in some parameters illustrates the need for further data to support and refine this model.

Indexed as

AntimalarialsArtemetherArtemisininsBody TemperatureChildChild, PreschoolEthanolaminesFemaleFluorenesHumansInfantLumefantrineMalaria, FalciparumMaleTanzaniaTreatment OutcomeAntimalarialsArtemetherArtemisininsartenimolEthanolaminesFluorenesLumefantrine

Identifiers

PMID20713675
PMCPMC2976134
OpenAlexW2127740142

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.