Evidence map›Paper›PMID 26714011›Full record

ArticlePloS one2015

Evasion of Immunity to Plasmodium falciparum: Rosettes of Blood Group A Impair Recognition of PfEMP1.

Kirsten Moll, Mia Palmkvist, Junhong Ch'ng, Mpungu Steven Kiwuwa, Mats Wahlgren

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
5.3field-weighted citation impact, top 4% 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

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 63 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Diamonds in the rif: Alignment-free comparative genomics analysis reveals strain-transcendent Plasmodium falciparum antigens amidst extensive genetic diversity.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2025
    Article
  5. Article
  6. Blood group antigens and malaria susceptibility.Frontiers in cellular and infection microbiology · 2025
    Review
  7. Article
  8. Observational
  9. Review
  10. Article
  11. Review
  12. Mechanism of Immune Evasion in Mosquito-Borne Diseases.Pathogens (Basel, Switzerland) · 2023
    Review
  13. Rosette formation byFrontiers in cellular and infection microbiology · 2023
    Article
  14. Review
  15. Review
  16. Influence of αJournal of blood medicine · 2022
    Article
  17. Article
  18. Article
  19. Revisiting the Mechanisms of Immune Evasion Employed by Human Parasites.Frontiers in cellular and infection microbiology · 2021
    Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

Kirsten MollDepartment of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Box 280, Nobels väg 16, SE-171 77 Stockholm, Sweden.
Mia PalmkvistDepartment of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Box 280, Nobels väg 16, SE-171 77 Stockholm, Sweden.
Junhong Ch'ngDepartment of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Box 280, Nobels väg 16, SE-171 77 Stockholm, Sweden.
Mpungu Steven KiwuwaDepartment of Pediatrics, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda.
Mats WahlgrenDepartment of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Box 280, Nobels väg 16, SE-171 77 Stockholm, Sweden.
Karolinska Institutet · SEMakerere University · UG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The ABO blood group antigens are expressed on erythrocytes but also on endothelial cells, platelets and serum proteins. Notably, the ABO blood group of a malaria patient determines the development of the disease given that blood group O reduces the probability to succumb in severe malaria, compared to individuals of groups A, B or AB. P. falciparum rosetting and sequestration are mediated by PfEMP1, RIFIN and STEVOR, expressed at the surface of the parasitized red blood cell (pRBC). Antibodies to these antigens consequently modify the course of a malaria infection by preventing sequestration and promoting phagocytosis of pRBC. Here we have studied rosetting P. falciparum and present evidence of an immune evasion mechanism not previously recognized. We find the accessibility of antibodies to PfEMP1 at the surface of the pRBC to be reduced when P. falciparum forms rosettes in blood group A RBC, as compared to group O RBC. The pRBC surrounds itself with tightly bound normal RBC that makes PfEMP1 inaccessible to antibodies and clearance by the immune system. Accordingly, pRBC of in vitro cloned P. falciparum devoid of ABO blood group dependent rosetting were equally well detected by anti-PfEMP1 antibodies, independent of the blood group utilized for their propagation. The pathogenic mechanisms underlying the severe forms of malaria may in patients of blood group A depend on the ability of the parasite to mask PfEMP1 from antibody recognition, in so doing evading immune clearance.

Indexed as

Immune EvasionRosette FormationABO Blood-Group SystemAnimalsAntibodies, ProtozoanErythrocytesHumansImmunoglobulin MPlasmodium falciparumProtein BindingProtozoan ProteinsABO Blood-Group SystemAntibodies, ProtozoanImmunoglobulin MProtozoan Proteins

Identifiers

PMID26714011
PMCPMC4694710
OpenAlexW2209914257

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.