Evidence map›Paper›PMID 31513658›Full record

ArticlePloS one2019

Levels of serum eosinophil cationic protein are associated with hookworm infection and intensity in endemic communities in Ghana.

Benjamin Amoani, Bright Adu, Margaret T Frempong, Tracy Sarkodie-Addo, Samuel Victor Nuvor, Michael D Wilson, Ben Gyan

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
1.4field-weighted citation impact, top 23% 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, 2 syntheses or guidelines pooled it, 13 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

7 authors at 3 institutions in 1 country.

Benjamin AmoaniDepartment of Biomedical Science, College of Health Sciences, University of Cape Coast, Cape Coast, Ghana.ORCID 0000-0002-4086-3033
Bright AduDepartment of Immunology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana.
Margaret T FrempongMolecular Medicine Department, School of Medical Sciences, Kwame Nkrumah University of Science and Technology, Ghana.
Tracy Sarkodie-AddoDepartment of Immunology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana.
Samuel Victor NuvorDepartment of Microbiology, College of Health Sciences, University of Cape Coast, Cape Coast, Ghana.
Michael D WilsonParasitology Department, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana.
Ben GyanDepartment of Immunology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana.
University of Ghana · GHUniversity of Cape Coast · GHKwame Nkrumah University of Science and Technology · GH

Funding

Epidemiology and molecular mechanisms of anthelminthic treatment failure in KintaR01AI099623 · NIAID · NOGUCHI MEMORIAL INSTITUTE / MEDICAL RES · PI WILSON, MICHAEL D · 2012 to 2016
$605k
NIAID NIH HHS R01 AI099623
6 · The paper itself

Abstract

backgroundThe eosinophil cationic protein (ECP) is a cytotoxic protein mainly secreted by eosinophils granulocytes and plays a role in host defense against parasitic infections. Infection with Necator americanus (hookworm) is traditionally diagnosed by the Kato-Katz method which is inherently tedious, subjective and known to underestimate infection intensity. This study aimed to assess levels of serum ECP in relation to hookworm infection intensity.

methodsStool samples from 984 (aged 4 to 80 years) participants in a cross-sectional study conducted in the Kintampo North Municipality of Ghana were examined using the Kato-Katz and formol-ether concentration methods. Serum ECP levels were measured by ECP assay kit and compared between 40 individuals infected with hookworm only, 63 with hookworm- Plasmodium falciparum co-infection, 59 with P. falciparum infection and 36 with no infection.

resultsHookworm infection prevalence was 18.1% (178/984). ECP levels were significantly higher in individuals infected with hookworm only (β = 2.96, 95%CI = 2.69, 3.23, p<0.001) or co-infected with P. falciparum (β = 3.15, 95%CI = 2.91, 3.39, p<0.001) compared to the negative control. Levels of ECP were similar between those with only P. falciparum infection and the uninfected control (p>0.05). Increased hookworm intensity was associated with a significant increase in ECP level (β = 4.45, 95%CI = 2.25, 9.11, rs = 0.193, n = 103, p<0.01). ECP threshold of 84.98ng/ml was associated with a positive predictive value (PPV) of 98% (95% CI = 92, 100), and negative predictive value (NPV) of 76% (95% CI = 62, 87) in classifying hookworm infection status with an AUROC of 96.3%.

conclusionSerum ECP level may be a good biomarker of hookworm infection and intensity and warrant further investigations to help improve current hookworm diagnosis.

Indexed as

AdolescentAdultAgedAged, 80 and overAncylostomatoideaAnimalsBiomarkersChildChild, PreschoolCross-Sectional StudiesEosinophil Cationic ProteinFecesFemaleGhanaHookworm InfectionsHumansBiomarkersEosinophil Cationic Protein

Identifiers

PMID31513658
PMCPMC6742367
OpenAlexW2972876448

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.