Evidence map›Paper›PMID 25838264›Full record

ArticleThe Journal of infectious diseases2015

Analysis of Erythrocyte Invasion Mechanisms of Plasmodium falciparum Clinical Isolates Across 3 Malaria-Endemic Areas in Ghana.

Henrietta E Mensah-Brown, Nicholas Amoako, James Abugri, Lindsay B Stewart, Godfred Agongo, Emmanuel K Dickson, Michael F Ofori, José A Stoute, David J Conway, Gordon A Awandare

Abstract read
In one paragraph

Article in The Journal of infectious diseases, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
5.3field-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

31 citing papers in PubMed, 35 citations in OpenAlex.

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  8. Phenotypic characterization of GhanaianFrontiers in immunology · 2022
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  9. Localization and function of aExperimental biology and medicine (Maywood, N.J.) · 2021
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  10. Genome-Wide Scans for GhanaianFrontiers in cellular and infection microbiology · 2021
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  13. Molecular Characterization and Immuno-Reactivity Patterns of a NovelFrontiers in cellular and infection microbiology · 2020
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  14. Cell trace far-red is a suitable erythrocyte dye for multi-colorExperimental biology and medicine (Maywood, N.J.) · 2020
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  20. Parasite-Related Genetic and Epigenetic Aspects and Host Factors InfluencingFrontiers in cellular and infection microbiology · 2018
    Review
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 5 institutions in 3 countries.

Henrietta E Mensah-BrownWest African Center for Cell Biology of Infectious Pathogens Department of Biochemistry, Cell and Molecular Biology.
Nicholas AmoakoKintampo Health Research Center.
James AbugriWest African Center for Cell Biology of Infectious Pathogens Department of Biochemistry, Cell and Molecular Biology.
Lindsay B StewartLondon School of Hygiene and Tropical Medicine, United Kingdom.
Godfred AgongoNavrongo Health Research Center, Ghana.
Emmanuel K DicksonDepartment of Immunology, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon.
Michael F OforiDepartment of Immunology, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon.
José A StouteDepartment of Medicine, Pennsylvania State University College of Medicine, Hershey.
David J ConwayLondon School of Hygiene and Tropical Medicine, United Kingdom.
Gordon A AwandareWest African Center for Cell Biology of Infectious Pathogens Department of Biochemistry, Cell and Molecular Biology Department of Immunology, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon.
London School of Hygiene & Tropical Medicine · GBKintampo Health Research Centre · GHNoguchi Memorial Institute for Medical Research · GHPennsylvania State University · USUniversity of Ghana · GH

Funding

ROLE OF COMPLEMENT RECEPTOR 1 IN ERYTHROCYTE INVASION BY PLASMODIUM FALCIPARUM INR01AI102848 · NIAID · NOGUCHI MEMORIAL INSTITUTE / MEDICAL RES · PI AWANDARE, GORDON AKANZUWINE · 2012 to 2016
$253k
NIAID NIH HHS 1R01AI102848NIAID NIH HHS R01 AI102848
6 · The paper itself

Abstract

backgroundPlasmodium falciparum invades human erythrocytes by using an array of ligands that interact with several receptors, including sialic acid (SA), complement receptor 1 (CR1), and basigin. We hypothesized that in malaria-endemic areas, parasites vary invasion pathways under immune pressure. Therefore, invasion mechanisms of clinical isolates collected from 3 zones of Ghana with different levels of endemicity (from lowest to highest, Accra, Navrongo, and Kintampo) were compared using standardized methods.

methodsBlood samples were collected from children aged 2-14 years in whom malaria was diagnosed, and erythrocyte invasion phenotypes were determined using the enzymes neuraminidase, chymotrypsin, and trypsin, which differentially cleave receptors from the erythrocyte surface. In addition, antibodies against CR1 and basigin were used to determine the contributions of these receptors to invasion. Gene expression levels of P. falciparum invasion ligands were also examined.

resultsThe parasites generally expressed SA-independent invasion phenotypes across the malaria-endemic areas, with parasites from Kintampo showing the highest invasion rates in neuraminidase-treated erythrocytes. CR1 was a major mediator of SA-independent invasion, while basigin was essential for both SA-dependent and SA-independent invasion mechanisms. Furthermore, expression of the basigin ligand PfRh5 was the best predictor of donor parasitemia.

conclusionsErythrocyte invasion phenotypes expressed by P. falciparum are influenced by endemicity levels, and the PfRh5-basigin pathway is a potential vaccine target.

Indexed as

Endemic DiseasesAdolescentBasiginCarrier ProteinsChildChild, PreschoolErythrocytesFemaleGhanaHumansMalaria, FalciparumMaleN-Acetylneuraminic AcidNeuraminidaseParasitemiaPlasmodium falciparumBasiginBSG protein, humanCarrier ProteinsCR1 protein, humanN-Acetylneuraminic AcidNeuraminidaseReceptors, Complement 3bRH5 protein, Plasmodium falciparumbasigincomplement receptor 1endemicityerythrocyte invasionligand gene expressionmalariaPlasmodium falciparum

Identifiers

PMID25838264
PMCPMC4577045
OpenAlexW2269090040

What OpenQuestion holds

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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.