Evidence map›Paper›PMID 22295123›Full record

ArticlePloS one2012

A plasma survey using 38 PfEMP1 domains reveals frequent recognition of the Plasmodium falciparum antigen VAR2CSA among young Tanzanian children.

Andrew V Oleinikov, Valentina V Voronkova, Isaac Tyler Frye, Emily Amos, Robert Morrison, Michal Fried, Patrick E Duffy

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
5.0field-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

31 citing papers in PubMed, 41 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. 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

7 authors at 2 institutions in 1 country.

Andrew V OleinikovSeattle Biomedical Research Institute, Seattle, Washington, United States of America. andrew.oleinikov@seattlebiomed.org
Valentina V Voronkova
Isaac Tyler Frye
Emily Amos
Robert Morrison
Michal Fried
Patrick E Duffy
Center for Infectious Disease Research · USNational Institute of Allergy and Infectious Diseases · US

Funding

Mali International Center for Excellence in Research: Malaria Clinical ResearchZIAAI001056 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI DUFFY, PATRICK · 2009 to 2024
$43.1M
Malaria Pathogenesis in young children and vaccine discoveryZIAAI001134 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI DUFFY, PATRICK · 2010 to 2025
$11.3M
Pathogenesis of falciparum malaria in infancyR01AI052059 · NIAID · SEATTLE BIOMEDICAL RESEARCH INSTITUTE · PI DUFFY, PATRICK E · 2001 to 2004
$2.7M
Pregnancy Malaria: Pathogenesis and ImmunityZIAAI001178 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI DUFFY, PATRICK · 2012 to 2015
$2.1M
Identification of vaccine candidates against severe malariaR01AI092120 · NIAID · SEATTLE BIOMEDICAL RESEARCH INSTITUTE · PI OLEINIKOV, ANDREW V · 2011 to 2014
$1.6M
High Throughput Analysis of Malarial Surface AntigensR21AI064503 · NIAID · SEATTLE BIOMEDICAL RESEARCH INSTITUTE · PI OLEINIKOV, ANDREW V · 2007 to 2008
$503k
NIAID NIH HHS 1R01AI092120NIAID NIH HHS 1R21AI064503NIAID NIH HHS R01 AI052059NIAID NIH HHS R01 AI092120NIAID NIH HHS R01AI52059NIAID NIH HHS R21 AI064503
6 · The paper itself

Abstract

PfEMP1 proteins comprise a family of variant antigens that appear on the surface of P. falciparum-infected erythrocytes and bind to multiple host receptors. Using a mammalian expression system and BioPlex technology, we developed an array of 24 protein constructs representing 38 PfEMP1 domains for high throughput analyses of receptor binding as well as total and functional antibody responses. We analyzed the reactivity of 561 plasma samples from 378 young Tanzanian children followed up to maximum 192 weeks of life in a longitudinal birth cohort. Surprisingly, reactivity to the DBL5 domain of VAR2CSA, a pregnancy malaria vaccine candidate, was most common, and the prevalence of reactivity was stable throughout early childhood. Reactivity to all other PfEMP1 constructs increased with age. Antibodies to the DBL2βC2(PF11_0521) domain, measured as plasma reactivity or plasma inhibition of ICAM1 binding, predicted reduced risk of hospitalization for severe or moderately severe malaria. These data suggest a role for VAR2CSA in childhood malaria and implicate DBL2βC2(PF11_0521) in protective immunity.

Indexed as

Data CollectionAntigens, ProtozoanCD36 AntigensFemaleHospitalizationHumansImmunoglobulin GInfantIntercellular Adhesion Molecule-1Longitudinal StudiesMalaria, FalciparumMalePlasmodium falciparumPregnancyProtein Structure, TertiaryProtozoan ProteinsAntigens, ProtozoanCD36 Antigenserythrocyte membrane protein 1, Plasmodium falciparumImmunoglobulin GIntercellular Adhesion Molecule-1Protozoan ProteinsVAR2CSA protein, Plasmodium falciparum

Identifiers

PMID22295123
PMCPMC3266279
OpenAlexW1966921870

What OpenQuestion holds

Textmetadata
LicenceCC0
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.