Evidence map›Paper›PMID 29980206›Full record

ArticleMalaria journal2018

Haemolysis and haem oxygenase-1 induction during persistent "asymptomatic" malaria infection in Burkinabé children.

Jason P Mooney, Aissata Barry, Bronner P Gonçalves, Alfred B Tiono, Shehu S Awandu, Lynn Grignard, Chris J Drakeley, Christian Bottomley, Teun Bousema, Eleanor M Riley

Open 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. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
0.8field-weighted citation impact, top 28% 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

15 citing papers in PubMed, 20 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Hemozoin: a Complex Molecule with Complex Activities.Current clinical microbiology reports · 2021
    Article
  9. Review
  10. Frontiers in cellular and infection microbiology · 2020
    Article
  11. Review
  12. Article
  13. Functional antibodies againstWellcome open research · 2018
    Article
  14. Neutrophils and Malaria.Frontiers in immunology · 2018
    Review
  15. 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

10 authors at 4 institutions in 3 countries.

Jason P MooneyDepartment of Immunology and Infection, London School of Hygiene and Tropical Medicine, London, UK. jason.mooney@roslin.ed.ac.uk.
Aissata BarryCentre National de Recherche et de Formation sur le Paludisme, Université de Ouagadougou, Ouagadougou, Burkina Faso.
Bronner P GonçalvesDepartment of Immunology and Infection, London School of Hygiene and Tropical Medicine, London, UK.
Alfred B TionoCentre National de Recherche et de Formation sur le Paludisme, Université de Ouagadougou, Ouagadougou, Burkina Faso.
Shehu S AwanduRadboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands.
Lynn GrignardDepartment of Immunology and Infection, London School of Hygiene and Tropical Medicine, London, UK.
Chris J DrakeleyDepartment of Immunology and Infection, London School of Hygiene and Tropical Medicine, London, UK.
Christian BottomleyDepartment of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.
Teun BousemaRadboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands.
Eleanor M RileyDepartment of Immunology and Infection, London School of Hygiene and Tropical Medicine, London, UK.
London School of Hygiene & Tropical Medicine · GBCentre National de Recherche et de Formation sur le Paludisme · BFRadboud University Nijmegen · NLRoslin Institute · GB

Funding

Bill and Melinda Gates Foundation OPP1034789Bill and Melinda Gates Foundation OPP1173572European Research Council ERC-2014-StG 639776Medical Research Council MR/K012126/1Medical Research Council MR/P000959/1Medical Research Council MR/P000959/2
6 · The paper itself

Abstract

backgroundThe haemolysis associated with clinical episodes of malaria results in the liberation of haem, which activates the enzyme haem oxygenase-1 (HO-1). HO-1 has been shown to reduce neutrophil function and increase susceptibility to invasive bacterial disease. However, the majority of community-associated malaria infections are subclinical, often termed "asymptomatic" and the consequences of low-grade haemolysis during subclinical malaria infection are unknown. STUDY DESIGN AND

resultsAs part of an ongoing study of subclinical malaria in Burkina Faso, 23 children with subclinical Plasmodium falciparum infections (determined by qPCR) were compared with 21 village-matched uninfected control children. Infected children showed evidence of persistent haemolysis over 35 days, with raised plasma haem and HO-1 concentrations. Concentrations of IL-10, which can also directly activate HO-1, were also higher in infected children compared to uninfected children. Regression analysis revealed that HO-1 was associated with haemolysis, but not with parasite density, anaemia or IL-10 concentration.

conclusionsThis study reveals that subclinical P. falciparum malaria infection is associated with sustained haemolysis and the induction of HO-1. Given the association between HO-1, neutrophil dysfunction and increased risk of Salmonella bacteraemia, prolonged HO-1 induction may explain epidemiological associations and geographic overlap between malaria and invasive bacterial disease. Further studies are needed to understand the consequences of persistent subclinical malaria infection, low-grade haemolysis and raised HO-1 on immune cell function and risk of comorbidities.

Indexed as

HemolysisAsymptomatic InfectionsBurkina FasoChildChild, PreschoolFemaleHeme Oxygenase-1HumansMalaria, FalciparumMalePlasmodium falciparumHeme Oxygenase-1AnaemiaBurkina FasoHaemolysisHO-1IL-10Subclinical malaria

Identifiers

PMID29980206
PMCPMC6035425
OpenAlexW2881337585

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.