Evidence map›Paper›PMID 30537973›Full record

ArticleMalaria journal2018

Malaria causes long-term effects on markers of iron status in children: a critical assessment of existing clinical and epidemiological tools.

Filip C Castberg, Edem W Sarbah, Kwadwo A Koram, Nicholas Opoku, Michael F Ofori, Bjarne Styrishave, Lars Hviid, Jørgen A L Kurtzhals

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Malaria journal, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 20% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Iron Deficiency Is Associated With Reduced Levels of Plasmodium falciparum-specific Antibodies in African Children.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2021
    Pooled it
  2. Trial
  3. Trial
  4. Article
  5. Article
  6. Article
  7. Article
  8. Longitudinal changes in iron homeostasis in human experimental and clinical malaria.medRxiv : the preprint server for health sciences · 2023
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Filip C CastbergCentre for Medical Parasitology, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.ORCID http://orcid.org/0000-0002-1140-5527
Edem W SarbahNoguchi Memorial Institute for Medical Research, Accra, Ghana.ORCID http://orcid.org/0000-0001-9327-7567
Kwadwo A KoramNoguchi Memorial Institute for Medical Research, Accra, Ghana.ORCID http://orcid.org/0000-0003-4274-6516
Nicholas OpokuHohoe Municipality Hospital, Hohoe, Ghana.ORCID http://orcid.org/0000-0001-9495-8874
Michael F OforiNoguchi Memorial Institute for Medical Research, Accra, Ghana.ORCID http://orcid.org/0000-0003-2341-7514
Bjarne StyrishaveToxicology and Drug Metabolism Group, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.ORCID http://orcid.org/0000-0003-1619-2468
Lars HviidCentre for Medical Parasitology, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.ORCID http://orcid.org/0000-0002-1698-4927
Jørgen A L KurtzhalsCentre for Medical Parasitology, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. joku@sund.ku.dk.ORCID http://orcid.org/0000-0003-2760-8713
University of Copenhagen · DKNoguchi Memorial Institute for Medical Research · GHUniversity of Health and Allied Sciences · GH

Funding

Danida Fellowship Centre (DK) 12/081RHFaculty of Health and Medical Sciences, University of Copenhagen A2027
6 · The paper itself

Abstract

backgroundMost epidemiological studies on the interplay between iron deficiency and malaria risk classify individuals as iron-deficient or iron-replete based on inflammation-dependent iron markers and adjustment for inflammation by using C-reactive protein (CRP) or α-1-acid glycoprotein (AGP). The validity of this approach and the usefulness of fibroblast growth factor 23 (FGF23) as a proposed inflammation-independent iron marker were tested.

methodsConventional iron markers and FGF23 were measured in children with acute falciparum malaria and after 1, 2, 4, and 6 weeks. Children, who were transfused or received iron supplementation in the follow-up period, were excluded, and iron stores were considered to be stable throughout. Ferritin levels 6 weeks after admission were used as a reference for admission iron status and compared with iron markers at different time points.

resultsThere were long-term perturbations in iron markers during convalescence from acute malaria. None of the tested iron parameters, including FGF23, were independent of inflammation. CRP and AGP normalized faster than ferritin after malaria episodes.

conclusionMalaria may bias epidemiological studies based on inflammation-dependent iron markers. Better markers of iron status during and after inflammation are needed in order to test strategies for iron supplementation in populations at risk of malaria.

Indexed as

Iron DeficienciesMalaria, FalciparumBiomarkersChildChild, PreschoolCohort StudiesDeficiency DiseasesFemaleFerritinsFibroblast Growth Factor-23Fibroblast Growth FactorsHepcidinsHumansInfantInflammationIronBiomarkersFerritinsFGF23 protein, humanFibroblast Growth Factor-23Fibroblast Growth FactorsHepcidinsIronFerritinFGF23HepcidinIron deficiencyMalaria

Identifiers

PMID30537973
PMCPMC6290551
OpenAlexW2903575048

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.