Evidence map›Paper›PMID 32845969›Full record

ArticleThe Journal of infectious diseases2022

How Does Blood-Retinal Barrier Breakdown Relate to Death and Disability in Pediatric Cerebral Malaria?

Ian J C MacCormick, Valentina Barrera, Nicholas A V Beare, Gabriela Czanner, Michael Potchen, Samuel Kampondeni, Robert S Heyderman, Alister G Craig, Malcolm E Molyneux, Macpherson Mallewa and 6 more

Open access · hybridAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
6.5field-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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

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  12. A proposed theoretical framework for retinal biomarkers.Alzheimer's & dementia (Amsterdam, Netherlands) · 2022
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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

16 authors at 8 institutions in 4 countries.

Ian J C MacCormickDepartment of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, a Member of Liverpool Health Partners, Liverpool, United Kingdom.
Valentina BarreraDepartment of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, a Member of Liverpool Health Partners, Liverpool, United Kingdom.
Nicholas A V BeareDepartment of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, a Member of Liverpool Health Partners, Liverpool, United Kingdom.ORCID 0000-0001-8086-990X
Gabriela CzannerDepartment of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, a Member of Liverpool Health Partners, Liverpool, United Kingdom.
Michael PotchenDepartment of Imaging Sciences, University of Rochester Medical Center, Rochester, New York, USA.
Samuel KampondeniDepartment of Imaging Sciences, University of Rochester Medical Center, Rochester, New York, USA.
Robert S HeydermanMalawi-Liverpool-Wellcome Trust Clinical Research Programme, Queen Elizabeth Central Hospital, Blantyre, Malawi.
Alister G CraigLiverpool School of Tropical Medicine, Pembroke Place, Liverpool, United Kingdom.
Malcolm E MolyneuxMalawi-Liverpool-Wellcome Trust Clinical Research Programme, Queen Elizabeth Central Hospital, Blantyre, Malawi.
Macpherson MallewaDepartment of Paediatrics and Child Health, Queen Elizabeth Central Hospital, Blantyre, Malawi.
Valerie A WhiteDepartment of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada.
Dan MilnerAmerican Society for Clinical Pathology, Chicago, Illinois, USA.
Paul HiscottDepartment of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, a Member of Liverpool Health Partners, Liverpool, United Kingdom.
Terrie E TaylorBlantyre Malaria Project, University of Malawi College of Medicine, Blantyre, Malawi.
Karl B SeydelBlantyre Malaria Project, University of Malawi College of Medicine, Blantyre, Malawi.
Simon P HardingDepartment of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, a Member of Liverpool Health Partners, Liverpool, United Kingdom.
University of Liverpool · GBUniversity of Malawi · MWAmerican Society for Clinical Pathology · USLiverpool School of Tropical Medicine · GBNHS Blood and Transplant · GBQueen Elizabeth Central Hospital · MWUniversity of British Columbia · CAUniversity of Rochester Medical Center · US

Funding

CLINICOPATHOLOGICAL CORRELATES OF CEREBRAL MALARIAR01AI034969 · NIAID · MICHIGAN STATE UNIVERSITY · PI TAYLOR, TERRIE ELLEN · 1996 to 2011
$3.2M
NIAID NIH HHS R01 AI034969Wellcome Trust
6 · The paper itself

Abstract

backgroundIn cerebral malaria, the retina can be used to understand disease pathogenesis. The mechanisms linking sequestration, brain swelling, and death remain poorly understood. We hypothesized that retinal vascular leakage would be associated with brain swelling.

methodsWe used retinal angiography to study blood-retinal barrier integrity. We analyzed retinal leakage, histopathology, brain magnatic resonance imaging (MRI), and associations with death and neurological disability in prospective cohorts of Malawian children with cerebral malaria.

resultsThree types of retinal leakage were seen: large focal leak (LFL), punctate leak (PL), and vessel leak. The LFL and PL were associated with death (odds ratio [OR] = 13.20, 95% confidence interval [CI] = 5.21-33.78 and OR = 8.58, 95% CI = 2.56-29.08, respectively) and brain swelling (P < .05). Vessel leak and macular nonperfusion were associated with neurological disability (OR = 3.71, 95% CI = 1.26-11.02 and OR = 9.06, 95% CI = 1.79-45.90). Large focal leak was observed as an evolving retinal hemorrhage. A core of fibrinogen and monocytes was found in 39 (93%) white-centered hemorrhages.

conclusionsBlood-retina barrier breakdown occurs in 3 patterns in cerebral malaria. Associations between LFL, brain swelling, and death suggest that the rapid accumulation of cerebral hemorrhages, with accompanying fluid egress, may cause fatal brain swelling. Vessel leak, from barrier dysfunction, and nonperfusion were not associated with severe brain swelling but with neurological deficits, suggesting hypoxic injury in survivors.

Indexed as

Brain EdemaMalaria, CerebralBlood-Retinal BarrierChildHumansProspective StudiesRetinablood-brain barrierbrain swellingcerebral malariafluorescein angiographymalarial retinopathy

Identifiers

PMID32845969
PMCPMC8922008
OpenAlexW3080271821

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.