Evidence map›Paper›PMID 21532754›Full record

ArticlePloS one2011

A role for fetal hemoglobin and maternal immune IgG in infant resistance to Plasmodium falciparum malaria.

Chanaki Amaratunga, Tatiana M Lopera-Mesa, Nathaniel J Brittain, Rushina Cholera, Takayuki Arie, Hisashi Fujioka, Jeffrey R Keefer, Rick M Fairhurst

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing 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

58 citing papers in PubMed, 99 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Review
  4. Article
  5. Review
  6. Human genetic variations conferring resistance to malaria.Journal of translational medicine · 2025
    Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Malaria in newborn: A missed entity for primary care physician.Journal of family medicine and primary care · 2023
    Review
  14. Article
  15. Article
  16. Dynamics of IgG antibody response againstFrontiers in immunology · 2023
    Article
  17. Article
  18. Age-Related Changes in Malaria Clinical Phenotypes During Infancy Are Modified by Sickle Cell Trait.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2021
    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 at 5 institutions in 2 countries.

Chanaki AmaratungaLaboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America.
Tatiana M Lopera-Mesa
Nathaniel J Brittain
Rushina Cholera
Takayuki Arie
Hisashi Fujioka
Jeffrey R Keefer
Rick M Fairhurst
National Institutes of Health · USNational Institute of Allergy and Infectious Diseases · USCase Western Reserve University · USJohns Hopkins University · USOsaka Prefecture University · JP

Funding

International Research in Cambodia: Tropical Medicine and Vector Research ZIAAI001066 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI YEK, CHRISTINA · 2009 to 2025
$10.8M
Malaria Pathogenesis and Human ImmunityZIAAI001000 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI FAIRHURST, RICK · 2009 to 2017
$9.3M
Intramural NIH HHS
6 · The paper itself

Abstract

backgroundIn Africa, infant susceptibility to Plasmodium falciparum malaria increases substantially as fetal hemoglobin (HbF) and maternal immune IgG disappear from circulation. During the first few months of life, however, resistance to malaria is evidenced by extremely low parasitemias, the absence of fever, and the almost complete lack of severe disease. This resistance has previously been attributed in part to poor parasite growth in HbF-containing red blood cells (RBCs). A specific role for maternal immune IgG in infant resistance to malaria has been hypothesized but not yet identified. METHODS AND

findingsWe found that P. falciparum parasites invade and develop normally in fetal (cord blood, CB) RBCs, which contain up to 95% HbF. However, these parasitized CB RBCs are impaired in their binding to human microvascular endothelial cells (MVECs), monocytes, and nonparasitized RBCs--cytoadherence interactions that have been implicated in the development of high parasite densities and the symptoms of malaria. Abnormal display of the parasite's cytoadherence antigen P. falciparum erythrocyte membrane protein-1 (PfEMP-1) on CB RBCs accounts for these findings and is reminiscent of that on HbC and HbS RBCs. IgG purified from the plasma of immune Malian adults almost completely abolishes the adherence of parasitized CB RBCs to MVECs.

conclusionsOur data suggest a model of malaria protection in which HbF and maternal IgG act cooperatively to impair the cytoadherence of parasitized RBCs in the first few months of life. In highly malarious areas of Africa, an infant's contemporaneous expression of HbC or HbS and development of an immune IgG repertoire may effectively reconstitute the waning protective effects of HbF and maternal immune IgG, thereby extending the malaria resistance of infancy into early childhood.

Indexed as

Disease SusceptibilityImmunity, Maternally-AcquiredAnimalsCells, CulturedErythrocytesFemaleFetal HemoglobinHumansImmunoglobulin GInfantInfant, NewbornMalaria, FalciparumPlasmodium falciparumFetal HemoglobinImmunoglobulin G

Identifiers

PMID21532754
PMCPMC3075246
OpenAlexW1974074965

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Registered trials

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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.