Evidence map›Paper›PMID 28833064›Full record

ArticleEuropean journal of immunology2017

Patterns of protective associations differ for antibodies to P. falciparum-infected erythrocytes and merozoites in immunity against malaria in children.

Jo-Anne Chan, Danielle I Stanisic, Michael F Duffy, Leanne J Robinson, Enmoore Lin, James W Kazura, Christopher L King, Peter M Siba, Freya Ji Fowkes, Ivo Mueller and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in European journal of immunology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
4.5field-weighted citation impact, top 5% 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, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Naturally Acquired Antibodies againstPathogens (Basel, Switzerland) · 2021
    Review
  11. Review
  12. Mediterranean Diet: Lipids, Inflammation, and Malaria Infection.International journal of molecular sciences · 2020
    Review
  13. Article
  14. Naturally Acquired Humoral Immunity AgainstFrontiers in immunology · 2020
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. 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

11 authors at 6 institutions in 3 countries.

Jo-Anne ChanMacfarlane Burnet Institute for Medical Research and Public Health, Melbourne, Victoria, Australia.
Danielle I StanisicWalter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
Michael F DuffyDepartment of Medicine and Melbourne School of Public Health, University of Melbourne, Parkville, Victoria, Australia.
Leanne J RobinsonMacfarlane Burnet Institute for Medical Research and Public Health, Melbourne, Victoria, Australia.
Enmoore LinPapua New Guinea Institute of Medical Research, Madang, Papua New Guinea.
James W KazuraCenter for Global Health and Diseases, Case Western Reserve University, Cleveland, OH, USA.
Christopher L KingCenter for Global Health and Diseases, Case Western Reserve University, Cleveland, OH, USA.
Peter M SibaPapua New Guinea Institute of Medical Research, Madang, Papua New Guinea.
Freya Ji FowkesMacfarlane Burnet Institute for Medical Research and Public Health, Melbourne, Victoria, Australia.
Ivo MuellerWalter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
James G BeesonMacfarlane Burnet Institute for Medical Research and Public Health, Melbourne, Victoria, Australia.ORCID 0000-0002-1018-7898
Burnet Institute · AUCenter for Global Health · USPapua New Guinea Institute of Medical Research · PGGriffith University · AUThe University of Melbourne · AUWalter and Eliza Hall Institute of Medical Research · AU

Funding

TransmissionU19AI089686 · NIAID · CASE WESTERN RESERVE UNIVERSITY · PI KAZURA, JAMES WALTER · 2010 to 2016
$9.9M
Understanding, tracking and eliminating malaria transmission in the Asia - Pacific RegionU19AI129392 · NIAID · WALTER AND ELIZA HALL INST MEDICAL RES · PI Ivo J Mueller · 2017 to 2026
$7.1M
NIAID NIH HHS U19 AI089686NIAID NIH HHS U19 AI129392
6 · The paper itself

Abstract

Acquired antibodies play an important role in immunity to P. falciparum malaria and are typically directed towards surface antigens expressed by merozoites and infected erythrocytes (IEs). The importance of specific IE surface antigens as immune targets remains unclear. We evaluated antibodies and protective associations in two cohorts of children in Papua New Guinea. We used genetically-modified P. falciparum to evaluate the importance of PfEMP1 and a P. falciparum isolate with a virulent phenotype. Our findings suggested that PfEMP1 was the dominant target of antibodies to the IE surface, including functional antibodies that promoted opsonic phagocytosis by monocytes. Antibodies were associated with increasing age and concurrent parasitemia, and were higher among children exposed to a higher force-of-infection as determined using molecular detection. Antibodies to IE surface antigens were consistently associated with reduced risk of malaria in both younger and older children. However, protective associations for antibodies to merozoite surface antigens were only observed in older children. This suggests that antibodies to IE surface antigens, particularly PfEMP1, play an earlier role in acquired immunity to malaria, whereas greater exposure is required for protective antibodies to merozoite antigens. These findings have implications for vaccine design and serosurveillance of malaria transmission and immunity.

Indexed as

AdolescentAge FactorsAntibodies, ProtozoanCell Line, TumorChildChild, PreschoolCohort StudiesErythrocytesHumansImmunityMalaria, FalciparumMerozoitesMonocytesPapua New GuineaPhagocytosisPlasmodium falciparumAntibodies, Protozoanerythrocyte membrane protein 1, Plasmodium falciparumProtozoan ProteinsAntibodiesImmunityMalariaPfEMP1Plasmodium falciparum

Identifiers

PMID28833064
PMCPMC5893221
OpenAlexW2749078347

What OpenQuestion holds

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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.