Evidence map›Paper›PMID 25470251›Full record

ArticlePloS one2014

Associations between red cell polymorphisms and Plasmodium falciparum infection in the middle belt of Ghana.

Nicholas Amoako, Kwaku Poku Asante, George Adjei, Gordon A Awandare, Langbong Bimi, Seth Owusu-Agyei

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
3.5field-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

23 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.

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  14. Effect of inherited red cell defects on growth ofThe Indian journal of medical research · 2018
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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

6 authors at 2 institutions in 1 country.

Nicholas AmoakoKintampo Health Research Centre, Kintampo, Brong Ahafo Region, Ghana.
Kwaku Poku AsanteKintampo Health Research Centre, Kintampo, Brong Ahafo Region, Ghana.
George AdjeiKintampo Health Research Centre, Kintampo, Brong Ahafo Region, Ghana.
Gordon A AwandareInfectious Diseases Research Laboratory, Department of Biochemistry, Cell and Molecular Biology. University of Ghana, Legon, Ghana.
Langbong BimiDepartment of Animal Biology and Conservation Science, University of Ghana, Legon, Ghana.
Seth Owusu-AgyeiKintampo Health Research Centre, Kintampo, Brong Ahafo Region, Ghana.
Kintampo Health Research Centre · GHUniversity of Ghana · GH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRed blood cell (RBC) polymorphisms are common in malaria endemic regions and are known to protect against severe forms of the disease. Therefore, it is important to screen for these polymorphisms in drugs or vaccines efficacy trials. This study was undertaken to evaluate associations between clinical malaria and RBC polymorphisms to assess biological interactions that may be necessary for consideration when designing clinical trials.

methodIn a cross-sectional study of 341 febrile children less than five years of age, associations between clinical malaria and common RBC polymorphisms including the sickle cell gene and G6PD deficiency was evaluated between November 2008 and June 2009 in the middle belt of Ghana, Kintampo. G6PD deficiency was determined by quantitative methods whiles haemoglobin variants were determined by haemoglobin titan gel electrophoresis. Blood smears were stained with Giemsa and parasite densities were determined microscopically.

resultsThe prevalence of clinical malarial among the enrolled children was 31.9%. The frequency of G6PD deficiency was 19.0% and that for the haemoglobin variants were 74.7%, 14.7%, 9.1%, 0.9% respectively for HbAA, HbAC, HbAS and HbSS. In Multivariate regression analysis, children with the HbAS genotype had 79% lower risk of malaria infection compared to those with the HbAA genotypes (OR = 0.21, 95% CI: 0.06-0.73, p = 0.01). HbAC genotype was not significantly associated with malaria infection relative to the HbAA genotype (OR = 0.70, 95% CI: 0.35-1.42, p = 0.33). G6PD deficient subgroup had a marginally increased risk of malaria infection compared to the G6PD normal subgroup (OR = 1.76, 95% CI: 0.98-3.16, p = 0.06).

conclusionThese results confirm previous findings showing a protective effect of sickle cell trait on clinical malaria infection. However, G6PD deficiency was associated with a marginal increase in susceptibility to clinical malaria compared to children without G6PD deficiency.

Indexed as

Child, PreschoolCross-Sectional StudiesFemaleGenotypeGhanaGlucosephosphate DehydrogenaseGlucosephosphate Dehydrogenase DeficiencyHemoglobins, AbnormalHumansInfantInfant, NewbornMalaria, FalciparumMalePlasmodium falciparumPolymorphism, GeneticRisk FactorsGlucosephosphate DehydrogenaseHemoglobins, Abnormal

Identifiers

PMID25470251
PMCPMC4254276
OpenAlexW2009116647

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.