Evidence map›Paper›PMID 20876370›Full record

ArticleAntimicrobial agents and chemotherapy2010

In vitro activity of pyronaridine against multidrug-resistant Plasmodium falciparum and Plasmodium vivax.

R N Price, J Marfurt, F Chalfein, E Kenangalem, K A Piera, E Tjitra, N M Anstey, B Russell

Abstract read
In one paragraph

Article 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 28 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 4 pooled it
5.2field-weighted citation impact, top 5% 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

28 citing papers in PubMed, 4 syntheses or guidelines pooled it, 42 citations in OpenAlex.

  1. Pooled it
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  6. Article
  7. AreBiomedicines · 2024
    Article
  8. Review
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  13. In Vitro Sensitivity of Pyronaridine in Thai Isolates ofThe American journal of tropical medicine and hygiene · 2018
    Article
  14. The Biology ofCold Spring Harbor perspectives in medicine · 2017
    Review
  15. Diagnosis and Treatment of Plasmodium vivax Malaria.The American journal of tropical medicine and hygiene · 2016
    Article
  16. Article
  17. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 4 countries.

R N PriceGlobal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Australia. rprice@menzies.edu.au
J Marfurt
F Chalfein
E Kenangalem
K A Piera
E Tjitra
N M Anstey
B Russell
Charles Darwin University · AUMenzies School of Health Research · AUMinistry of Health · IDState University of Papua · ID

Funding

Wellcome Trust 091625Wellcome Trust GR071614MA
6 · The paper itself

Abstract

Pyronaridine, a Mannich base antimalarial, has demonstrated high in vivo and in vitro efficacy against chloroquine-resistant Plasmodium falciparum. Although this drug has the potential to become a prominent artemisinin combination therapy, little is known about its efficacy against drug-resistant Plasmodium vivax. The in vitro antimalarial susceptibility of pyronaridine was assessed in multidrug-resistant P. vivax (n = 99) and P. falciparum (n = 90) isolates from Papua, Indonesia, using a schizont maturation assay. The median 50% inhibitory concentration (IC(50)) of pyronaridine was 1.92 nM (range, 0.24 to 13.8 nM) against P. falciparum and 2.58 nM (range, 0.13 to 43.6 nM) against P. vivax, with in vitro susceptibility correlating significantly with chloroquine, amodiaquine, and piperaquine (r(s) [Spearman's rank correlation coefficient] = 0.45 to 0.62; P < 0.001). P. falciparum parasites initially at trophozoite stage had higher IC(50)s of pyronaridine than those exposed at the ring stage (8.9 nM [range, 0.6 to 8.9 nM] versus 1.6 nM [range, 0.6 to 8.9 nM], respectively; P = 0.015), although this did not reach significance for P. vivax (4.7 nM [range, 1.4 to 18.7 nM] versus 2.5 nM [range, 1.4 to 15.6 nM], respectively; P = 0.085). The excellent in vitro efficacy of pyronaridine against both chloroquine-resistant P. vivax and P. falciparum highlights the suitability of the drug as a novel partner for artemisinin-based combination therapy in regions where the two species are coendemic.

Indexed as

AnimalsAntimalarialsChloroquineDrug Resistance, MultipleInhibitory Concentration 50NaphthyridinesPlasmodium falciparumPlasmodium vivaxAntimalarialsChloroquineNaphthyridinespyronaridine

Identifiers

PMID20876370
PMCPMC2981240
OpenAlexW2133465110

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.