Evidence map›Paper›PMID 21288822›Full record

ArticleThe Journal of infectious diseases2011

Selective sweeps and genetic lineages of Plasmodium falciparum drug -resistant alleles in Ghana.

Md Tauqeer Alam, Dziedzom K de Souza, Sumiti Vinayak, Sean M Griffing, Amanda C Poe, Nancy O Duah, Anita Ghansah, Kwame Asamoa, Laurence Slutsker, Michael D Wilson and 3 more

Open access · bronzeAbstract 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 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed
4.9field-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

59 citing papers in PubMed, 101 citations in OpenAlex.

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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

13 authors at 6 institutions in 3 countries.

Md Tauqeer AlamMalaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, GA 30329, USA. hsf1@cdc.gov
Dziedzom K de Souza
Sumiti Vinayak
Sean M Griffing
Amanda C Poe
Nancy O Duah
Anita Ghansah
Kwame Asamoa
Laurence Slutsker
Michael D Wilson
John W Barnwell
Venkatachalam Udhayakumar
Kwadwo A Koram
Center for Global Health · USInstitute of Parasitology · CZDivision of Parasitic Diseases and Malaria · USEmory University · USNoguchi Memorial Institute for Medical Research · GHUniversity of Ghana · GH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn 2005, Ghana adopted artemisinin-based combination therapy (ACT) for primary treatment of falciparum malaria. A comprehensive study of the drug-resistance-associated mutations and their genetic lineages will lead to a better understanding of the evolution of antimalarial drug resistance in this region.

methodsThe pfcrt, pfmdr1, dhps, and dhfr mutations associated with chloroquine (CQ) and sulfadoxine-pyrimethamine (SP) resistance and the microsatellite loci flanking these genes were genotyped in Plasmodium falciparum isolates from Ghana.

resultsThe prevalence of mutations associated with both CQ and SP resistance was high in Ghana. However, we observed a decrease in prevalence of the pfcrt K76T mutation in northern Ghana after the change in drug policy from CQ to ACT. Analysis of genetic diversity and differentiation at microsatellite loci flanking all 4 genes indicated that they have been under strong selection, because of CQ and SP use. The triple-mutant pfcrt and dhfr alleles in Ghana were derived from Southeast Asia, whereas the double-mutant dhfr, dhps, and pfmdr1 alleles were of African lineage.

conclusionBecause of the possible role of pfmdr1 in amodiaquine and mefloquine resistance, demonstrating selection on pfmdr1 and defining lineages of resistant alleles in an African population holds great importance.

Indexed as

AllelesDrug ResistanceAmino Acid SubstitutionAntimalarialsATP-Binding Cassette, Sub-Family C ProteinsBiological EvolutionChild, PreschoolChloroquineDihydropteroate SynthaseDNA, ProtozoanDrug CombinationsEvolution, MolecularGenotypeGhanaHumansInfantAntimalarialsATP-Binding Cassette, Sub-Family C ProteinsChloroquineDihydropteroate SynthaseDNA, ProtozoanDrug Combinationsfanasil, pyrimethamine drug combinationMdr1 protein, Plasmodium falciparumMembrane Transport ProteinsPfCRT protein, Plasmodium falciparumProtozoan ProteinsPyrimethamineSulfadoxineTetrahydrofolate Dehydrogenase

Identifiers

PMID21288822
PMCPMC3071065
OpenAlexW2138687474

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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.