Evidence map›Paper›PMID 31533729›Full record

ArticleMalaria journal2019

Rare mutations in Pfmdr1 gene of Plasmodium falciparum detected in clinical isolates from patients treated with anti-malarial drug in Nigeria.

Abel O Idowu, Wellington A Oyibo, Sanjib Bhattacharyya, Manjeet Khubbar, Udoma E Mendie, Violet V Bumah, Carolyn Black, Joseph Igietseme, Anthony A Azenabor

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 8% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Article
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  11. Review
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  14. Polymorphism Analysis ofDiseases (Basel, Switzerland) · 2021
    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 4 institutions in 2 countries.

Abel O IdowuDepartment of Biomedical Sciences, College of Health Sciences, University of Wisconsin, 2400 E. Hartford Avenue, Milwaukee, WI, 53211, USA.
Wellington A OyiboANDI Centre of Excellence in Malaria Diagnosis, College of Medicine, University of Lagos, Lagos, Nigeria.
Sanjib BhattacharyyaCity of Milwaukee Health Department Laboratory, Milwaukee, USA.
Manjeet KhubbarCity of Milwaukee Health Department Laboratory, Milwaukee, USA.
Udoma E MendieDepartment of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, University of Lagos, Lagos, Nigeria.
Violet V BumahDepartment of Biology, North Life Science 317, San Diego State University, San Diego, CA, 92182, USA.
Carolyn BlackMolecular Pathogenesis Laboratory, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.
Joseph IgietsemeMolecular Pathogenesis Laboratory, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.
Anthony A AzenaborDepartment of Biomedical Sciences, College of Health Sciences, University of Wisconsin, 2400 E. Hartford Avenue, Milwaukee, WI, 53211, USA. caxisonny@gmail.com.
University of Lagos · NGCenters for Disease Control and Prevention · USMilwaukee Health Department · USSan Diego State University · US

Funding

Nigeria-US Fulbright Commission 15160886
6 · The paper itself

Abstract

backgroundPlasmodium falciparum, the deadliest causative agent of malaria, has high prevalence in Nigeria. Drug resistance causing failure of previously effective drugs has compromised anti-malarial treatment. On this basis, there is need for a proactive surveillance for resistance markers to the currently recommended artemisinin-based combination therapy (ACT), for early detection of resistance before it become widespread.

methodsThis study assessed anti-malarial resistance genes polymorphism in patients with uncomplicated P. falciparum malaria in Lagos, Nigeria. Sanger and Next Generation Sequencing (NGS) methods were used to screen for mutations in thirty-seven malaria positive blood samples targeting the P. falciparum chloroquine-resistance transporter (Pfcrt), P. falciparum multidrug-resistance 1 (Pfmdr1), and P. falciparum kelch 13 (Pfk13) genes, which have been previously associated with anti-malarial resistance.

resultsExpectedly, the NGS method was more proficient, detecting six Pfmdr1, seven Pfcrt and three Pfk13 mutations in the studied clinical isolates from Nigeria, a malaria endemic area. These mutations included rare Pfmdr1 mutations, N504K, N649D, F938Y and S967N, which were previously unreported. In addition, there was moderate prevalence of the K76T mutation (34.6%) associated with chloroquine and amodiaquine resistance, and high prevalence of the N86 wild type allele (92.3%) associated with lumefantrine resistance.

conclusionWidespread circulation of mutations associated with resistance to current anti-malarial drugs could potentially limit effective malaria therapy in endemic populations.

Indexed as

MutationPolymorphism, GeneticAntimalarialsATP-Binding Cassette, Sub-Family C ProteinsDrug ResistanceMembrane Transport ProteinsNigeriaPlasmodium falciparumPrevalenceProtozoan ProteinsAntimalarialsATP-Binding Cassette, Sub-Family C ProteinsMdr1 protein, Plasmodium falciparumMembrane Transport ProteinsPfCRT protein, Plasmodium falciparumProtozoan ProteinsAntimalarial gene polymorphismInfectious disease epidemiologyMalariaParasitic disease epidemiology and controlPlasmodium

Identifiers

PMID31533729
PMCPMC6751857
OpenAlexW2974494339

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

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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.