Evidence map›Paper›PMID 26928448›Full record

ArticleMalaria journal2016

Population pharmacokinetics of a three-day chloroquine treatment in patients with Plasmodium vivax infection on the Thai-Myanmar border.

Richard Höglund, Younis Moussavi, Ronnatrai Ruengweerayut, Anurak Cheomung, Angela Äbelö, Kesara Na-Bangchang

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 15% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. [Chloroquine phosphate: therapeutic drug for COVID-19].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2020
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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

6 authors at 4 institutions in 2 countries.

Richard HöglundMahidol Oxford Tropical Medicine Research Unit (MORU), Mahidol University, Bangkok, Thailand. Richard.H@tropmedres.ac.
Younis MoussaviUnit for Pharmacokinetics and Drug Metabolism, Department Pharmacology, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden. yonismoussawi@hotmail.com.
Ronnatrai RuengweerayutMae Sot General Hospital, Mae Sot, Tak province, Thailand. ronnatrai@yahoo.com.
Anurak CheomungCenter of Excellence for Molecular Biology and Pharmacology of Malaria and Cholangiocarcinoma, International College of Medicine, Thammasat University, Bangkok, Pathumtanee, Thailand. anurak_ch9@yahoo.com.
Angela ÄbelöUnit for Pharmacokinetics and Drug Metabolism, Department Pharmacology, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden. angela.abelo@neuro.gu.se.
Kesara Na-BangchangCenter of Excellence for Molecular Biology and Pharmacology of Malaria and Cholangiocarcinoma, International College of Medicine, Thammasat University, Bangkok, Pathumtanee, Thailand. kesaratmu@yahoo.com.
Thammasat University · THUniversity of Gothenburg · SEMaesot General Hospital · THMahidol Oxford Tropical Medicine Research Unit · TH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA three-day course of chloroquine remains a standard treatment of Plasmodium vivax infection in Thailand with satisfactory clinical efficacy and tolerability although a continuous decline in in vitro parasite sensitivity has been reported. Information on the pharmacokinetics of chloroquine and its active metabolite desethylchloroquine are required for optimization of treatment to attain therapeutic exposure and thus prevent drug resistance development.

methodsThe study was conducted at Mae Tao Clinic for migrant worker, Tak province, Thailand. Blood samples were collected from a total of 75 (8 Thais and 67 Burmeses; 36 males and 39 females; aged 17-52 years) patients with mono-infection with P. vivax malaria [median (95 % CI) admission parasitaemia 4898 (1206-29,480)/µL] following treatment with a three-day course of chloroquine (25 mg/kg body weight chloroquine phosphate over 3 days). Whole blood concentrations of chloroquine and desethylchloroquine were measured using high performance liquid chromatography with UV detection. Concentration-time profiles of both compounds were analysed using a population-based pharmacokinetic approach.

resultsAll patients showed satisfactory response to standard treatment with a three-day course of chloroquine with 100 % cure rate within the follow-up period of 42 days. Neither recurrence of P. vivax parasitaemia nor appearance of P. falciparum occurred. A total of 1045 observations from 75 participants were included in the pharmacokinetic analysis. Chloroquine disposition was most adequately described by the two-compartment model with one transit compartment absorption model into the central compartment and a first-order transformation of chloroquine into desethylchloroquine with an additional peripheral compartment added to desethylchloroquine. First-order elimination from the central compartment of chloroquine and desethylchloroquine was assumed. The model exhibited a strong predictive ability and the pharmacokinetic parameters were estimated with adequate precision.

conclusionThe developed population-based pharmacokinetic model could be applied for future prediction of optimal dosage regimen of chloroquine in patients with P. vivax infection.

Indexed as

AdolescentAdultAntimalarialsChloroquineDrug ResistanceFemaleHumansMalaria, VivaxMaleMiddle AgedMyanmarPlasmodium vivaxThailandYoung AdultAntimalarialsChloroquine

Identifiers

PMID26928448
PMCPMC4772585
OpenAlexW2292052820

What OpenQuestion holds

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LicenceCC BY
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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.