Evidence map›Paper›PMID 18212081›Full record

ArticleInfection and immunity2008

Duration of naturally acquired antibody responses to blood-stage Plasmodium falciparum is age dependent and antigen specific.

Onome J Akpogheneta, Nancy O Duah, Kevin K A Tetteh, Samuel Dunyo, David E Lanar, Margaret Pinder, David J Conway

Abstract read
In one paragraph

Article in Infection and immunity, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 125 papers.

0numbers the graph read from it
0cells of the map it votes in
125citing papers in PubMed
9.5field-weighted citation impact, top 2% 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

125 citing papers in PubMed, 180 citations in OpenAlex.

  1. Trial
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  6. Parasite epidemiology and control · 2024
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  9. High Prevalence of PolyclonalTropical medicine and infectious disease · 2023
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  15. Article
  16. Naturally Acquired Antibodies againstPathogens (Basel, Switzerland) · 2021
    Review
  17. Article
  18. Article
  19. Article
  20. Article

65 more citing papers are in PubMed but not listed here.

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

7 authors at 4 institutions in 3 countries.

Onome J AkpoghenetaMedical Research Council Laboratories, Fajara, P.O. Box 273, Banjul, The Gambia.
Nancy O Duah
Kevin K A Tetteh
Samuel Dunyo
David E Lanar
Margaret Pinder
David J Conway
London School of Hygiene & Tropical Medicine · GBMRC Unit the Gambia · GMUniversity of London · GBWalter Reed Army Institute of Research · US

Funding

Medical Research Council MC_U190074193
6 · The paper itself

Abstract

Naturally acquired antibody responses provide partial protection from clinical malaria, and blood-stage parasite vaccines under development aim to prime such responses. To investigate the determinants of antibody response longevity, immunoglobulin G (IgG) antibodies to several blood-stage vaccine candidate antigens in the sera of two cohorts of children of up to 6 years of age during the dry seasons of 2003 and 2004 in The Gambia were examined. The first cohort showed that most antibodies were lost within less than 4 months of the first sampling if a persistent infection was not present, so the study of the second-year cohort involved collecting samples from individuals every 2 weeks over a 3-month period. Antibody responses in the second cohort were also influenced by persistent malaria infection, so analysis focused particularly on children in whom parasites were not detected after the first time point. Antibodies to most antigens declined more slowly in children in the oldest age group (>5 years old) and more rapidly in children in the youngest group (<3 years old). However, antibodies to merozoite surface protein 2 were shorter lived than antibodies to other antigens and were not more persistent in older children. The age-specific and antigen-specific differences were not explained by different IgG subclass response profiles, indicating the probable importance of differential longevities of plasma cell populations rather than antibody molecules. It is likely that young children mostly have short-lived plasma cells and thus experience rapid declines in antibody levels but that older children have longer-lasting antibody responses that depend on long-lived plasma cells.

Indexed as

AgingAnimalsAntibodies, ProtozoanAntigens, ProtozoanChildChild, PreschoolCohort StudiesGambiaHumansInfantMalaria, FalciparumPlasmodium falciparumSeasonsTime FactorsAntibodies, ProtozoanAntigens, Protozoan

Identifiers

PMID18212081
PMCPMC2292892
OpenAlexW2169012335

What OpenQuestion holds

Textmetadata
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.