Evidence map›Paper›PMID 25848972›Full record

ArticleMalaria journal2015

Multinormal in vitro distribution of Plasmodium falciparum susceptibility to piperaquine and pyronaridine.

Aurélie Pascual, Marilyn Madamet, Sébastien Briolant, Tiphaine Gaillard, Rémy Amalvict, Nicolas Benoit, Dominique Travers, Bruno Pradines, French National Reference Centre for Imported Malaria Study Group

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
6.0field-weighted citation impact, top 4% 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

24 citing papers in PubMed, 36 citations in OpenAlex.

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  17. In Vitro Sensitivity of Pyronaridine in Thai Isolates ofThe American journal of tropical medicine and hygiene · 2018
    Article
  18. Article
  19. Influence of theThe American journal of tropical medicine and hygiene · 2017
    Article
  20. Association between Polymorphisms in the PfAntimicrobial agents and chemotherapy · 2017
    Article
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

9 authors at 5 institutions in 2 countries.

Aurélie Pascual
Marilyn Madamet
Sébastien Briolant
Tiphaine Gaillard
Rémy Amalvict
Nicolas Benoit
Dominique Travers
Bruno Pradines
French National Reference Centre for Imported Malaria Study Group
Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes · FRInstitut de Médecine Tropicale du Service de Santé des Armées · FRCentre National de la Recherche Scientifique · FRHôpital Laveran · FRInserm · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn 2002, the World Health Organization recommended that artemisinin-based combination therapy (ACT) be used to treat uncomplicated malaria. Dihydroartemisinin-piperaquine and artesunate-pyronaridine are two of these new combinations. The aim of the present work was to assess the distribution of the in vitro values of pyronaridine (PND) and piperaquine (PPQ) and to define a cut-off for reduced susceptibility for the two anti-malarial drugs.

methodsThe distribution and range of the 50% inhibitory concentration values (IC₅₀) of PND and PPQ were determined for 313 isolates obtained between 2008 and 2012 from patients hospitalized in France for imported malaria. The statistical Bayesian analysis was designed to answer the specific question of whether Plasmodium falciparum has different phenotypes of susceptibility to PND and PPQ.

resultsThe PND IC₅₀ values ranged from 0.6 to 84.6 nM, with a geometric mean of 21.1 ± 16.0 nM (standard deviation). These values were classified into three components. The PPQ IC₅₀ values ranged from 9.8 to 217.3 nM, and the geometric mean was 58.0 ± 34.5 nM. All 313 PPQ values were classified into four components. Isolates with IC₅₀ values greater than 60 nM or four-fold greater than 3D7 IC₅₀ are considered isolates that have reduced susceptibility to PND and those with IC₅₀ values greater than 135 nM or 2.3-fold greater than 3D7 IC₅₀ are considered isolates that have reduced susceptibility to PPQ.

conclusionThe existence of at least three phenotypes for PND and four phenotypes for PPQ was demonstrated. Based on the cut-off values, 18 isolates (5.8%) and 13 isolates (4.2%) demonstrated reduced susceptibility to PND and PPQ, respectively.

Indexed as

AfricaAntimalarialsDrug ResistanceHumansInhibitory Concentration 50Malaria, FalciparumNaphthyridinesPiperazinesPlasmodium falciparumQuinolinesAntimalarialsNaphthyridinespiperaquinePiperazinespyronaridineQuinolines

Identifiers

PMID25848972
PMCPMC4323025
OpenAlexW2111658433

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.