Evidence map›Paper›PMID 22343839›Full record

ArticleCritical care medicine2012

Angiopoietin-2 levels are associated with retinopathy and predict mortality in Malawian children with cerebral malaria: a retrospective case-control study*.

Andrea L Conroy, Simon J Glover, Michael Hawkes, Laura K Erdman, Karl B Seydel, Terrie E Taylor, Malcolm E Molyneux, Kevin C Kain

Abstract read
In one paragraph

Article in Critical care medicine, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed, 2 pooled it
14.5field-weighted citation impact, top 1% 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

82 citing papers in PubMed, 2 syntheses or guidelines pooled it, 114 citations in OpenAlex.

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  10. Febrile temperature enhancesbioRxiv : the preprint server for biology · 2025
    Article
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  12. A comprehensive review of cerebral malaria.Journal of parasitic diseases : official organ of the Indian Society for Parasitology · 2025
    Review
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22 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Andrea L ConroySandra A Rotman Laboratories, McLaughlin-Rotman Centre for Global Health, University Health Network-Toronto General Hospital, University of Toronto, Toronto, Canada.
Simon J Glover
Michael Hawkes
Laura K Erdman
Karl B Seydel
Terrie E Taylor
Malcolm E Molyneux
Kevin C Kain
University Health Network · CA

Funding

CLINICOPATHOLOGICAL CORRELATES OF CEREBRAL MALARIAR01AI034969 · NIAID · MICHIGAN STATE UNIVERSITY · PI TAYLOR, TERRIE ELLEN · 1996 to 2011
$3.2M
CIHR 13721CIHR MOP-115160NIAID NIH HHS 5R01AI034969NIAID NIH HHS R01 AI034969Wellcome Trust 074125
6 · The paper itself

Abstract

objectiveTo investigate the relationship among the angiopoietin-Tie-2 system, retinopathy, and mortality in children with cerebral malaria.

designA case-control study of retinopathy-positive vs. retinopathy-negative children with clinically defined cerebral malaria.

settingQueen Elizabeth Central Hospital in Blantyre, Malawi. SUBJECTS: One hundred fifty-five children presenting with severe malaria and meeting a strict definition of clinical cerebral malaria (Blantyre Coma Score ≤ 2, Plasmodium falciparum parasitemia, no other identifiable cause for coma) were included in the study.

interventionsNone. MEASUREMENTS AND MAIN

resultsClinical and laboratory parameters were recorded at admission and funduscopic examinations were performed. Admission levels of angiopoietin-1, angiopoietin-2, and a soluble version of their cognate receptor were measured by enzyme-linked immunosorbent assay. We show that angiopoietin-1 levels are decreased and angiopoietin-2 and soluble Tie-2 levels are increased in children with cerebral malaria who had retinopathy compared with those who did not. Angiopoietin-2 and soluble Tie-2 were independent predictors of retinopathy (adjusted odds ratio [95% CI], angiopoietin-2, 4.3 [1.3-14.6], p = .019; soluble Tie-2, 9.7 [2.1-45.8], p = .004). Angiopoietin-2 and soluble Tie-2 were positively correlated with the number of hemorrhages, the severity or retinal whitening, and the extent of capillary whitening observed on funduscopic examination (p < .05 after adjustment for multiple comparisons). Angiopoietin-2 and soluble Tie-2 levels were elevated in children with cerebral malaria who subsequently died and angiopoetin-2 was an independent predictor of death (adjusted odds ratio: 3.9 [1.2-12.7], p = .024). When combined with clinical parameters, angiopoetin-2 improved prediction of mortality using logistic regression models and classification trees.

conclusionsThese results provide insights into mechanisms of endothelial activation in cerebral malaria and indicate that the angiopoietin-Tie-2 axis is associated with retinopathy and mortality in pediatric cerebral malaria.

Indexed as

AdultAgedAngiopoietin-2BiomarkersCase-Control StudiesFemaleHumansMalaria, CerebralMalawiMaleMiddle AgedPredictive Value of TestsPrognosisRetinal DiseasesRetrospective StudiesYoung AdultAngiopoietin-2Biomarkers

Identifiers

PMID22343839
PMCPMC3284252
OpenAlexW1987058934

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Read underepoch 390

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.