Evidence map›Paper›PMID 21347351›Full record

ArticlePLoS pathogens2011

Short-lived IFN-γ effector responses, but long-lived IL-10 memory responses, to malaria in an area of low malaria endemicity.

Jiraprapa Wipasa, Lucy Okell, Supachai Sakkhachornphop, Chaisuree Suphavilai, Kriangkrai Chawansuntati, Witaya Liewsaree, Julius C R Hafalla, Eleanor M Riley

Abstract read
In one paragraph

Article in PLoS pathogens, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
–field-weighted citation impact
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

33 citing papers in PubMed.

  1. Hepatitis B Vaccination Induced TNF-Journal of immunology research · 2018
    Trial
  2. Trial
  3. Trial
  4. Regulatory T cell memory: implications for malaria.Journal of immunology (Baltimore, Md. : 1950) · 2025
    Review
  5. Article
  6. Article
  7. Article
  8. TFrontiers in immunology · 2019
    Review
  9. Article
  10. Article
  11. Article
  12. Interferon-PeerJ · 2017
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  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

8 authors.

Jiraprapa WipasaResearch Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand.
Lucy Okell
Supachai Sakkhachornphop
Chaisuree Suphavilai
Kriangkrai Chawansuntati
Witaya Liewsaree
Julius C R Hafalla
Eleanor M Riley

Funding

Wellcome TrustWellcome Trust 072182Wellcome Trust 079920
6 · The paper itself

Abstract

Immunity to malaria is widely believed to wane in the absence of reinfection, but direct evidence for the presence or absence of durable immunological memory to malaria is limited. Here, we analysed malaria-specific CD4+ T cell responses of individuals living in an area of low malaria transmission in northern Thailand, who had had a documented clinical attack of P. falciparum and/or P. vivax in the past 6 years. CD4+ T cell effector memory (CD45RO+) IFN-γ (24 hours ex vivo restimulation) and cultured IL-10 (6 day secretion into culture supernatant) responses to malaria schizont antigens were detected only in malaria-exposed subjects and were more prominent in subjects with long-lived antibodies or memory B cells specific to malaria antigens. The number of IFN-γ-producing effector memory T cells declined significantly over the 12 months of the study, and with time since last documented malaria infection, with an estimated half life of the response of 3.3 (95% CI 1.9-10.3) years. In sharp contrast, IL-10 responses were sustained for many years after last known malaria infection with no significant decline over at least 6 years. The observations have clear implications for understanding the immunoepidemiology of naturally acquired malaria infections and for malaria vaccine development.

Indexed as

AdultCD4-Positive T-LymphocytesCells, CulturedEndemic DiseasesFemaleGeographyHumansImmunologic MemoryInterferon-gammaInterleukin-10MalariaMaleMiddle AgedThailandTime FactorsYoung AdultIL10 protein, humanInterferon-gammaInterleukin-10

Identifiers

PMID21347351
PMCPMC3037361

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.