Evidence map›Paper›PMID 23687570›Full record

ArticleJournal of the Pediatric Infectious Diseases Society2012

Evidence of Endothelial Activation in Asymptomatic Plasmodium falciparum Parasitemia and Effect of Blood Group on Levels of von Willebrand Factor in Malaria.

Gregory S Park, Kathleen F Ireland, Robert O Opoka, Chandy C John

Abstract read
In one paragraph

Article in Journal of the Pediatric Infectious Diseases Society, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
–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

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. Review
  7. Article
  8. Von Willebrand Factor Facilitates Intravascular Dissemination of MicrosporidiaFrontiers in cellular and infection microbiology · 2021
    Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. 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

4 authors.

Gregory S ParkDepartment of Pediatrics, University of Minnesota Medical School, Minneapolis.
Kathleen F IrelandDepartment of Pediatrics, University of Minnesota Medical School, Minneapolis.
Robert O OpokaMakerere University Faculty of Medicine, Kampala, Uganda.
Chandy C JohnDepartment of Pediatrics, University of Minnesota Medical School, Minneapolis ccj@umn.edu.

Funding

Severe Malaria And Risk to The Brain (SMART Brain)R01NS055349 · NINDS · UNIVERSITY OF MINNESOTA · PI Chandy C. John, Ruth Namazzi · 2008 to 2026
$11.2M
Research Training in Infection and Neurodevelopment in UgandaD43NS078280 · NINDS · UNIVERSITY OF MINNESOTA · PI JOHN, CHANDY C. · 2011 to 2015
$1.1M
Cognitive and Neurologic Sequelae in Cerebral MalariaR21TW006794 · FIC · UNIVERSITY OF MINNESOTA TWIN CITIES · PI JOHN, CHANDY C · 2003 to 2007
$330k
FIC NIH HHS R21 TW006794NINDS NIH HHS D43 NS078280NINDS NIH HHS R01 NS055349
6 · The paper itself

Abstract

backgroundEndothelial activation may contribute to development of severe disease from Plasmodium falciparum infection, but optimal markers of endothelial activation in severe malaria, the extent of endothelial activation in asymptomatic infection, and the effect of blood group O on endothelial activation have not been defined.

methodsSerum levels of 3 markers of endothelial activation-von Willebrand factor (VWF), soluble intercellular adhesion molecule-1 (sICAM-1), and soluble vascular cell adhesion molecule-1 (sVCAM-1)-were assessed in Ugandan children with cerebral malaria (CM) (n = 86), children with uncomplicated malaria (UM) (n = 81), and community children (CC) (n = 90).

resultsSerum VWF, sICAM-1, and sVCAM-1 levels were all elevated in asymptomatic community children with microscopy-confirmed parasitemia when compared with children without parasitemia by microscopy or polymerase chain reaction (all, P ≤ .05). Levels of VWF, sICAM-1, and sVCAM-1 were higher in children with UM than in CC (all, P < 0.001), but only VWF levels effectively distinguished CM from UM (P < 0.001), a finding confirmed by receiver operating characteristic analyses (area under the curve = 0.67; 95% confidence interval, .58-.75). Von Willebrand factor levels were lower in children with blood group O versus non-O blood groups across the disease spectrum, but VWF levels remained higher in CM versus UM, even after controlling for blood group.

conclusionsEndothelial activation, as assessed by serum levels of VWF, sICAM-1, and sVCAM-1, occurs even in subclinical P. falciparum parasitemia. Von Willebrand factor levels increase with greater malaria disease severity. Blood group O is associated with lower VWF levels, but presence of blood group O alone does not explain the higher VWF levels seen in children with CM.

Identifiers

PMID23687570
PMCPMC3656549

What OpenQuestion holds

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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.