Evidence map›Paper›PMID 28945794›Full record

ArticlePloS one2017

Variations in the quality of malaria-specific antibodies with transmission intensity in a seasonal malaria transmission area of Northern Ghana.

Kwadwo A Kusi, Emmanuel A Manu, Theresa Manful Gwira, Eric Kyei-Baafour, Emmanuel K Dickson, Jones A Amponsah, Edmond J Remarque, Bart W Faber, Clemens H M Kocken, Daniel Dodoo and 5 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.5field-weighted citation impact, top 11% 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

17 citing papers in PubMed, 21 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

15 authors at 3 institutions in 2 countries.

Kwadwo A KusiDepartment of Immunology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana.ORCID http://orcid.org/0000-0001-5483-9985
Emmanuel A ManuDepartment of Biochemistry, Cell and Molecular Biology, College of Basic and Applied Sciences, University of Ghana, Legon, Ghana.
Theresa Manful GwiraDepartment of Biochemistry, Cell and Molecular Biology, College of Basic and Applied Sciences, University of Ghana, Legon, Ghana.
Eric Kyei-BaafourDepartment of Immunology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana.
Emmanuel K DicksonDepartment of Immunology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana.
Jones A AmponsahDepartment of Immunology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana.
Edmond J RemarqueDepartment of Parasitology, Biomedical Primate Research Centre, Rijswijk, The Netherlands.
Bart W FaberDepartment of Parasitology, Biomedical Primate Research Centre, Rijswijk, The Netherlands.
Clemens H M KockenDepartment of Parasitology, Biomedical Primate Research Centre, Rijswijk, The Netherlands.
Daniel DodooDepartment of Immunology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana.
Ben A GyanDepartment of Immunology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana.
Gordon A AwandareDepartment of Biochemistry, Cell and Molecular Biology, College of Basic and Applied Sciences, University of Ghana, Legon, Ghana.
Frank AtugubaNavrongo Health Research Centre, Ghana Health Service, Navrongo, Ghana.
Abraham R OduroNavrongo Health Research Centre, Ghana Health Service, Navrongo, Ghana.
Kwadwo A KoramWest African Centre for Cell Biology of Infectious Pathogens, College of Basic and Applied Sciences, University of Ghana, Legon, Ghana.
University of Ghana · GHBiomedical Primate Research Centre · NLNavrongo Health Research Centre · GH

Funding

NIAID NIH HHS HHSN266200400016C
6 · The paper itself

Abstract

introductionPlasmodium falciparum induced antibodies are key components of anti-malarial immunity in malaria endemic areas, but their antigen targets can be polymorphic. Induction of a high proportion of strain-specific antibodies will limit the recognition of a broad diversity of parasite strains by these responses. There are indications that circulating parasite diversity varies with malaria transmission intensity, and this may affect the specificity of elicited anti-malarial antibodies. This study therefore assessed the effect of varying malaria transmission patterns on the specificity of elicited antibody responses and to identify possible antibody correlates of naturally acquired immunity to malaria in children in an area of Ghana with seasonal malaria transmission.

methodsThis retrospective study utilized plasma samples collected longitudinally at six time points from children aged one to five years. Multiplex assays were used to measure antibody levels against four P. falciparum AMA 1 variants (from the 3D7, FVO, HB3 and CAMP parasite strains) and the 3D7 variant of the EBA 175 region II antigen and the levels compared between symptomatic and asymptomatic children. The relative proportions of cross-reactive and strain-specific antibodies against the four AMA 1 variants per sampling time point were assessed by Bland-Altman plots. The levels of antibodies against allelic AMA1 variants, measured by singleplex and multiplex luminex assays, were also compared.

resultsThe data show that increased transmission intensity is associated with higher levels of cross-reactive antibody responses, most likely a result of a greater proportion of multiple parasite clone infections during the high transmission period. Anti-AMA1 antibodies were however associated with a history of infection rather than protection in this age group.

conclusionThe data contribute to understanding the underlying mechanism of the acquisition of strain-transcending antibody immunity following repeated exposure to diverse parasite strains.

Indexed as

Amino Acid SequenceAnimalsAntibodies, ProtozoanAntibody SpecificityAntigens, ProtozoanChildChild, PreschoolCohort StudiesCross ReactionsFemaleGhanaHumansImmunoassayInfantLongitudinal StudiesMalaria, FalciparumAntibodies, ProtozoanAntigens, Protozoanapical membrane antigen I, PlasmodiumMembrane ProteinsProtozoan Proteins

Identifiers

PMID28945794
PMCPMC5612719
OpenAlexW2758236225

What OpenQuestion holds

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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.