Evidence map›Paper›PMID 21950338›Full record

ArticleBritish journal of clinical pharmacology2012

Artesunate/dihydroartemisinin pharmacokinetics in acute falciparum malaria in pregnancy: absorption, bioavailability, disposition and disease effects.

Rose McGready, Aung Pyae Phyo, Marcus J Rijken, Joel Tarning, Niklas Lindegardh, Warunee Hanpithakpon, Hla Hla Than, Nathar Hlaing, Naw Thida Zin, Pratap Singhasivanon and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in British journal of clinical pharmacology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 5 pooled it
4.7field-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

42 citing papers in PubMed, 5 syntheses or guidelines pooled it, 68 citations in OpenAlex.

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  11. Effect of high-dose or split-dose artesunate on parasite clearance in artemisinin-resistant falciparum malaria.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2013
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  19. Anti-CMV therapy, what next? A systematic review.Frontiers in microbiology · 2023
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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

12 authors at 2 institutions in 2 countries.

Rose McGreadyShoklo Malaria Research Unit, PO Box 46, Mae Sot Tak 63110 Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand.
Aung Pyae Phyo
Marcus J Rijken
Joel Tarning
Niklas Lindegardh
Warunee Hanpithakpon
Hla Hla Than
Nathar Hlaing
Naw Thida Zin
Pratap Singhasivanon
Nicholas J White
François Nosten
Mahidol University · THShoklo Malaria Research Unit · TH

Funding

Wellcome Trust 089275Wellcome Trust 093956
6 · The paper itself

Abstract

aimTo determine if reported lower plasma concentrations of artemisinin derivatives for malaria in pregnancy result from reduced oral bioavailability, expanded volume of distribution or increased clearance.

methodsIn a sequentially assigned crossover treatment study, pregnant women with uncomplicated falciparum malaria received i.v. artesunate (i.v. ARS) (4mgkg(-1) ) on the first day and oral ARS (4mgkg(-1) ) on the second, or, oral on the first and i.v. on the second, in both groups followed by oral ARS (4mgkg(-1) day(-1) ) for 5 days. Plasma concentrations of ARS and dihyroartemisinin (DHA) were measured by liquid chromatography-mass-spectrometry on days 0, 1, 2 and 6. Controls were the same women restudied when healthy (3 months post partum).

resultsI.v. ARS administration resulted in similar ARS and DHA pharmacokinetics in pregnant women with malaria (n= 20) and in controls (n= 14). Oral administration resulted in higher total drug exposure in pregnancy [AUC (95% CI) in (ngml(-1) h)/(mgkg(-1) )] of 55.1 (30.1, 100.0) vs. 26.5 (12.2, 54.3) for ARS, P= 0.002 and 673 (386, 1130) vs. 523 (351, 724) for DHA, P= 0.007. The corresponding median absolute oral bioavailability (F%) was 21.7 (12.6, 75.1) vs. 9.9 (6.0, 36.81) for ARS (P= 0.046) and 77.0 (42.2, 129) vs. 72.7 (42.0, 87.7) for DHA, P= 0.033. Total DHA exposure was lower at day 6 in pregnant women with malaria (P < 0.001) compared with day 0 or 1, but not in the controls (P= 0.084).

conclusionsThis study demonstrates the effects of malaria on oral ARS drug disposition are greater than those of pregnancy. This probably results from a disease related reduction in first pass metabolism. The data are reassuring regarding current dosing recommendations.

Indexed as

AdolescentAdultAntimalarialsArtemisininsArtesunateBiological AvailabilityDose-Response Relationship, DrugFemaleHumansMalaria, FalciparumMetabolic Clearance RatePostpartum PeriodPregnancyPregnancy Complications, ParasiticSeverity of Illness IndexYoung AdultAntimalarialsArtemisininsartenimolArtesunate

Identifiers

PMID21950338
PMCPMC3370352
OpenAlexW2099534544

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.