Evidence map›Paper›PMID 23881859›Full record

ArticleEuropean journal of immunology2013

Long-lived Plasmodium falciparum specific memory B cells in naturally exposed Swedish travelers.

Francis M Ndungu, Klara Lundblom, Josea Rono, Joseph Illingworth, Sara Eriksson, Anna Färnert

Open access · hybridAbstract read
In one paragraph

Article in European journal of immunology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
7.2field-weighted citation impact, top 3% 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

43 citing papers in PubMed, 67 citations in OpenAlex.

  1. Trial
  2. Trial
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  5. Differences in phenotype between long-lived memory B cells againstbioRxiv : the preprint server for biology · 2024
    Article
  6. Naturally acquired IgG responses toFrontiers in immunology · 2024
    Article
  7. Article
  8. Article
  9. Article
  10. Article
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  12. Frontiers in immunology · 2022
    Article
  13. Review
  14. Review
  15. Review
  16. Accelerator or Brake: Immune Regulators in Malaria.Frontiers in cellular and infection microbiology · 2020
    Review
  17. Naturally Acquired Humoral Immunity AgainstFrontiers in immunology · 2020
    Review
  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

6 authors at 4 institutions in 3 countries.

Francis M NdunguCentre for Geographical Medicine Research (Coast), Kenya Medical Research Institute, Kilifi, Kenya; Centres for Clinical Vaccinology and Tropical Medicine, Nuffield Department of Medicine, University of Oxford, Oxford, UK.
Klara Lundblom
Josea Rono
Joseph Illingworth
Sara Eriksson
Anna Färnert
Karolinska University Hospital · SENuffield Orthopaedic Centre · GBKarolinska Institutet · SEKenya Medical Research Institute · KE

Funding

Wellcome Trust
6 · The paper itself

Abstract

Antibodies (Abs) are critical for immunity to malaria. However, Plasmodium falciparum specific Abs decline rapidly in absence of reinfection, suggesting impaired immunological memory. This study determines whether residents of Sweden that were treated for malaria following international travel maintained long-lasting malaria-specific Abs and memory B cells (MBCs). We compared levels of malaria-specific Abs and MBCs between 47 travelers who had been admitted with malaria at the Karolinska University Hospital between 1 and 16 years previously, eight malaria-naïve adult Swedes without histories of travel, and 14 malaria-immune adult Kenyans. Plasmodium falciparum-lysate-specific Ab levels were above naïve control levels in 30% of the travelers, whereas AMA-1, merozoite surface protein-142 , and merozoite surface protein-3-specific Ab levels were similar. In contrast, 78% of travelers had IgG-MBCs specific for at least one malaria antigen (59, 45, and 28% for apical merozoite antigen-1, merozoite surface protein-1, and merozoite surface protein-3, respectively) suggesting that malaria-specific MBCs are maintained for longer than the cognate serum Abs in the absence of re-exposure to parasites. Five travelers maintained malaria antigen-specific MBC responses for up to 16 years since the diagnosis of the index episode (and had not traveled to malaria-endemic regions in the intervening time). Thus P. falciparum can induce long-lasting MBCs, maintained for up to 16 years without reexposure.

Indexed as

AdultAntibodies, ProtozoanAntigens, ProtozoanB-LymphocytesFemaleHumansImmunoglobulin GImmunologic MemoryMalaria, FalciparumMaleMembrane ProteinsMerozoitesMerozoite Surface Protein 1Plasmodium falciparumProtozoan ProteinsSurveys and QuestionnairesAntibodies, ProtozoanAntigens, Protozoanapical membrane antigen I, PlasmodiumImmunoglobulin GMembrane ProteinsMerozoite Surface Protein 1merozoite surface protein 3, PlasmodiumProtozoan ProteinsAntibodiesLongevityMalariaMemory B cellsPlasmodium falciparum

Identifiers

PMID23881859
PMCPMC4114544
OpenAlexW2022024392

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.