Evidence map›Paper›PMID 21288820›Full record

ArticleThe Journal of infectious diseases2011

Methotrexate is highly potent against pyrimethamine-resistant Plasmodium vivax.

Mallika Imwong, Bruce Russell, Rossarin Suwanarusk, Alexis Nzila, Mara L Leimanis, Kanlaya Sriprawat, Supaporn Kaewpongsri, Aung Pyae Phyo, Georges Snounou, Francois Nosten and 1 more

Open access · hybridAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.8field-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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
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  5. Observational
  6. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 5 institutions in 4 countries.

Mallika ImwongDepartment of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok.
Bruce Russell
Rossarin Suwanarusk
Alexis Nzila
Mara L Leimanis
Kanlaya Sriprawat
Supaporn Kaewpongsri
Aung Pyae Phyo
Georges Snounou
Francois Nosten
Laurent Renia
Shoklo Malaria Research Unit · THAgency for Science, Technology and Research · SGSingapore Immunology Network · SGKenya Medical Research Institute · KEMahidol Oxford Tropical Medicine Research Unit · TH

Funding

Wellcome TrustWellcome Trust 080867/Z/06/Z
6 · The paper itself

Abstract

Resistance of vivax malaria to treatment with antifolates, such as pyrimethamine (Pyr), is spreading as mutations in the dihydrofolatereductase (dhfr) genes are selected and disseminated. We tested the antitumor drug methotrexate (MTX), a potent competitive inhibitor of dhfr, against 11 Plasmodium vivax isolates ex vivo, 10 of which had multiple dhfr mutations associated with Pyr resistance. Despite high-grade resistance to Pyr (median 50% inhibitory concentration [IC₅₀], 13,345 nM), these parasites were all highly susceptible to MTX (median IC₅₀, 2.6 nM). Given its potency against Pyr-resistant P. vivax, the antimalarial potential of MTX deserves further investigation.

Indexed as

AntimalarialsDrug ResistanceHumansInhibitory Concentration 50Malaria, VivaxMethotrexateMutation, MissensePlasmodium vivaxProtozoan ProteinsPyrimethamineTetrahydrofolate DehydrogenaseAntimalarialsMethotrexateProtozoan ProteinsPyrimethamineTetrahydrofolate Dehydrogenase

Identifiers

PMID21288820
PMCPMC3071051
OpenAlexW1980780826

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.