Evidence map›Paper›PMID 22125593›Full record

ArticlePloS one2011

Elevated plasma von Willebrand factor and propeptide levels in Malawian children with malaria.

Happy T Phiri, Daniel J Bridges, Simon J Glover, Jan A van Mourik, Bas de Laat, Bridon M'baya, Terrie E Taylor, Karl B Seydel, Malcolm E Molyneux, E Brian Faragher and 2 more

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 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

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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

12 authors at 8 institutions in 4 countries.

Happy T PhiriMalawi-Liverpool-Wellcome Trust Clinical Research Programme, College of Medicine, Blantyre, Malawi.
Daniel J Bridges
Simon J Glover
Jan A van Mourik
Bas de Laat
Bridon M'baya
Terrie E Taylor
Karl B Seydel
Malcolm E Molyneux
E Brian Faragher
Alister G Craig
James E G Bunn
Liverpool School of Tropical Medicine · GBSanquin · NLUniversity of Liverpool · GBUniversity of Malawi · MWBlantyre Institute for Community Ophthalmology · MWMalawi Blood Transfusion Service · MWMalawi-Liverpool-Wellcome Trust Clinical Research Programme · MWMichigan State University · US

Funding

Wellcome TrustWellcome Trust 081345MA
6 · The paper itself

Abstract

backgroundIn spite of the significant mortality associated with Plasmodium falciparum infection, the mechanisms underlying severe disease remain poorly understood. We have previously shown evidence of endothelial activation in Ghanaian children with malaria, indicated by elevated plasma levels of both von Willebrand factor (VWF) and its propeptide. In the current prospective study of children in Malawi with retinopathy confirmed cerebral malaria, we compared these markers with uncomplicated malaria, non malarial febrile illness and controls. METHODS AND

findingsChildren with cerebral malaria, mild malaria and controls without malaria were recruited into the study. All comatose patients were examined by direct and indirect ophthalmoscopy. Plasma VWF and propeptide levels were measured by ELISA. Median VWF and propeptide levels were significantly higher in patients with uncomplicated malaria than in children with non-malarial febrile illness of comparable severity, in whom levels were higher than in non-febrile controls. Median concentrations of both markers were higher in cerebral malaria than in uncomplicated malaria, and were similar in patients with and without retinopathy. Levels of both VWF and propeptide fell significantly 48 hours after commencing therapy and were normal one month later.

conclusionsIn children with malaria plasma VWF and propeptide levels are markedly elevated in both cerebral and mild paediatric malaria, with levels matching disease severity, and these normalize upon recovery. High levels of both markers also occur in retinopathy-negative 'cerebral malaria' cases, many of whom are thought to be suffering from diseases other than malaria, indicating that further studies of these markers will be required to determine their sensitivity and specificity.

Indexed as

AdolescentAdultBiomarkersChildChild, PreschoolDiagnosis, DifferentialEnzyme-Linked Immunosorbent AssayFemaleFeverHumansInfantMalaria, CerebralMalaria, FalciparumMalawiMaleOphthalmoscopyBiomarkersProtein Precursorsvon Willebrand Factor

Identifiers

PMID22125593
PMCPMC3219631
OpenAlexW2051780587

What OpenQuestion holds

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LicenceCC BY
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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.