Evidence map›Paper›PMID 22905743›Full record

ArticleMalaria journal2012

Genetic polymorphisms associated with anti-malarial antibody levels in a low and unstable malaria transmission area in southern Sri Lanka.

Rajika L Dewasurendra, Prapat Suriyaphol, Sumadhya D Fernando, Richard Carter, Kirk Rockett, Patrick Corran, Dominic Kwiatkowski, Nadira D Karunaweera, 7 MalariaGEN Consortium

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.6field-weighted citation impact, top 15% 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

20 citing papers in PubMed, 24 citations in OpenAlex.

  1. Trial
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  3. Serological surveillance on potentialFrontiers in cellular and infection microbiology · 2023
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  20. The host genetic diversity in malaria infection.Journal of tropical medicine · 2012
    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 6 institutions in 3 countries.

Rajika L DewasurendraDepartment of Parasitology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka.
Prapat Suriyaphol
Sumadhya D Fernando
Richard Carter
Kirk Rockett
Patrick Corran
Dominic Kwiatkowski
Nadira D Karunaweera
7 MalariaGEN Consortium
University of Colombo · LKCentre for Human Genetics · GBSiriraj Hospital · THUniversity of Edinburgh · GBUniversity of London · GBUniversity of Oxford · GB

Funding

Medical Research Council G0600230Medical Research Council G0600718Wellcome Trust 075491/Z04Wellcome Trust 077012/Z/05/ZWellcome Trust 090532Wellcome Trust 090532/Z/09/ZWellcome Trust 090770Wellcome Trust 090770/Z/09/ZWellcome Trust WT077383/Z/05/Z
6 · The paper itself

Abstract

backgroundThe incidence of malaria in Sri Lanka has significantly declined in recent years. Similar trends were seen in Kataragama, a known malaria endemic location within the southern province of the country, over the past five years. This is a descriptive study of anti-malarial antibody levels and selected host genetic mutations in residents of Kataragama, under low malaria transmission conditions.

methodsSera were collected from 1,011 individuals residing in Kataragama and anti-malarial antibodies and total IgE levels were measured by a standardized ELISA technique. Host DNA was extracted and used for genotyping of selected SNPs in known genes associated with malaria. The antibody levels were analysed in relation to the past history of malaria (during past 10 years), age, sex, the location of residence within Kataragama and selected host genetic markers.

resultsA significant increase in antibodies against Plasmodium falciparum antigens AMA1, MSP2, NANP and Plasmodium vivax antigen MSP1 in individuals with past history of malaria were observed when compared to those who did not. A marked increase of anti-MSP1(Pf) and anti-AMA1(Pv) was also evident in individuals between 45-59 years (when compared to other age groups). Allele frequencies for two SNPs in genes that code for IL-13 and TRIM-5 were found to be significantly different between those who have experienced one or more malaria attacks within past 10 years and those who did not. When antibody levels were classified into a low-high binary trait, significant associations were found with four SNPs for anti-AMA1(Pf); two SNPs for anti-MSP1(Pf); eight SNPs for anti-NANP(Pf); three SNPs for anti-AMA1(Pv); seven SNPs for anti-MSP1(Pv); and nine SNPs for total IgE. Eleven of these SNPs with significant associations with anti-malarial antibody levels were found to be non-synonymous.

conclusionsEvidence is suggestive of an age-acquired immunity in this study population in spite of low malaria transmission levels. Several SNPs were in linkage disequilibrium and had a significant association with elevated antibody levels, suggesting that these host genetic mutations might have an individual or collective effect on inducing or/and maintaining high anti-malarial antibody levels.

Indexed as

Polymorphism, Single NucleotideAdolescentAdultAgedAged, 80 and overAge FactorsAntibodies, ProtozoanFemaleHumansLinkage DisequilibriumMalaria, FalciparumMalaria, VivaxMaleMiddle AgedPlasmodium falciparumPlasmodium vivaxAntibodies, Protozoan

Identifiers

PMID22905743
PMCPMC3459805
OpenAlexW2144023590

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.