Evidence map›Paper›PMID 20807203›Full record

ArticleMolecular microbiology2010

Chloroquine susceptibility and reversibility in a Plasmodium falciparum genetic cross.

Jigar J Patel, Drew Thacker, John C Tan, Perri Pleeter, Lisa Checkley, Joseph M Gonzales, Bingbing Deng, Paul D Roepe, Roland A Cooper, Michael T Ferdig

Open access · bronzeAbstract read
In one paragraph

Article in Molecular microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
7.9field-weighted citation impact, top 2% 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

40 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Plasmodium falciparum chloroquine resistance transporter is a H+-coupled polyspecific nutrient and drug exporter.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

10 authors at 3 institutions in 1 country.

Jigar J PatelThe Eck Institute for Global Health, Department of Biological Sciences, University of Notre Dame, 205 Galvin Life Sciences, Notre Dame, IN 46556, USA.
Drew Thacker
John C Tan
Perri Pleeter
Lisa Checkley
Joseph M Gonzales
Bingbing Deng
Paul D Roepe
Roland A Cooper
Michael T Ferdig
University of Notre Dame · USGeorgetown University · USOld Dominion University · US

Funding

Chloroquine Resistance and pfcrt Variants in PNGR01AI052312 · NIAID · CASE WESTERN RESERVE UNIVERSITY · PI ZIMMERMAN, PETER A. · 2002 to 2006
$2.7M
Determinants of growth and fitness in drug resistant malaria parasitesR01AI071121 · NIAID · UNIVERSITY OF NOTRE DAME · PI FERDIG, MICHAEL T · 2008 to 2012
$1.8M
Genetic control of cross-resistances in P. falciparumR01AI055035 · NIAID · UNIVERSITY OF NOTRE DAME · PI FERDIG, MICHAEL T · 2003 to 2007
$1.6M
NIAID NIH HHS AI052312NIAID NIH HHS AI055035NIAID NIH HHS AI071121NIAID NIH HHS R01 AI052312NIAID NIH HHS R01 AI055035NIAID NIH HHS R01 AI071121
6 · The paper itself

Abstract

Mutations in the Plasmodium falciparum chloroquine (CQ) resistance transporter (PfCRT) are major determinants of verapamil (VP)-reversible CQ resistance (CQR). In the presence of mutant PfCRT, additional genes contribute to the wide range of CQ susceptibilities observed. It is not known if these genes influence mechanisms of chemosensitization by CQR reversal agents. Using quantitative trait locus (QTL) mapping of progeny clones from the HB3 × Dd2 cross, we show that the P. falciparum multidrug resistance gene 1 (pfmdr1) interacts with the South-East Asia-derived mutant pfcrt haplotype to modulate CQR levels. A novel chromosome 7 locus is predicted to contribute with the pfcrt and pfmdr1 loci to influence CQR levels. Chemoreversal via a wide range of chemical structures operates through a direct pfcrt-based mechanism. Direct inhibition of parasite growth by these reversal agents is influenced by pfcrt mutations and additional loci. Direct labelling of purified recombinant PfMDR1 protein with a highly specific photoaffinity CQ analogue, and lack of competition for photolabelling by VP, supports our QTL predictions. We find no evidence that pfmdr1 copy number affects CQ response in the progeny; however, inheritance patterns indicate that an allele-specific interaction between pfmdr1 and pfcrt is part of the complex genetic background of CQR.

Indexed as

AntimalarialsChloroquineDrug ResistanceGene DosageMembrane Transport ProteinsMutationPlasmodium falciparumProtozoan ProteinsQuantitative Trait LociVerapamilAntimalarialsChloroquineMembrane Transport ProteinsPfCRT protein, Plasmodium falciparumProtozoan ProteinsVerapamil

Identifiers

PMID20807203
PMCPMC3091165
OpenAlexW2100465176

What OpenQuestion holds

Textmetadata
LicenceTDM
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.