Evidence map›Paper›PMID 25484919›Full record

ArticleGenome medicine2014

The conjunctival microbiome in health and trachomatous disease: a case control study.

Yanjiao Zhou, Martin J Holland, Pateh Makalo, Hassan Joof, Chrissy H Roberts, David Cw Mabey, Robin L Bailey, Matthew J Burton, George M Weinstock, Sarah E Burr

Open access · goldAbstract read
In one paragraph

Article in Genome medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 110 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
110citing papers in PubMed, 3 pooled it
7.7field-weighted citation impact, top 2% 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

110 citing papers in PubMed, 3 syntheses or guidelines pooled it, 194 citations in OpenAlex.

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50 more citing papers are in PubMed but not listed here.

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

10 authors at 5 institutions in 3 countries.

Yanjiao ZhouThe Genome Institute, Washington University, St Louis, MO 63108 USA ; Department of Pediatrics, Washington University School of Medicine, St Louis, MO 63130 USA.
Martin J HollandDepartment of Clinical Research, London School of Hygiene and Tropical Medicine, London, WC1E 7HT UK.
Pateh MakaloDisease Control and Elimination Theme, Medical Research Council Unit, Fajara, POB273 The Gambia.
Hassan JoofDisease Control and Elimination Theme, Medical Research Council Unit, Fajara, POB273 The Gambia.
Chrissy H RobertsDepartment of Clinical Research, London School of Hygiene and Tropical Medicine, London, WC1E 7HT UK.
David Cw MabeyDepartment of Clinical Research, London School of Hygiene and Tropical Medicine, London, WC1E 7HT UK.
Robin L BaileyDepartment of Clinical Research, London School of Hygiene and Tropical Medicine, London, WC1E 7HT UK.
Matthew J BurtonDepartment of Clinical Research, London School of Hygiene and Tropical Medicine, London, WC1E 7HT UK.
George M WeinstockThe Genome Institute, Washington University, St Louis, MO 63108 USA ; The Jackson Laboratory for Genomic Medicine, Farmington, CT 06030 USA.
Sarah E BurrDepartment of Clinical Research, London School of Hygiene and Tropical Medicine, London, WC1E 7HT UK ; Disease Control and Elimination Theme, Medical Research Council Unit, Fajara, POB273 The Gambia.
London School of Hygiene & Tropical Medicine · GBMRC Unit the Gambia · GMUniversity of London · GBJackson Laboratory · USWashington University in St. Louis · US

Funding

Sequencing the Human MicrobiomeU54HG004968 · NHGRI · WASHINGTON UNIVERSITY · PI WILSON, RICHARD K. · 2009 to 2012
$16.7M
NHGRI NIH HHS U54 HG004968Wellcome Trust 98481
6 · The paper itself

Abstract

backgroundTrachoma, caused by Chlamydia trachomatis, remains the world's leading infectious cause of blindness. Repeated ocular infection during childhood leads to scarring of the conjunctiva, in-turning of the eyelashes (trichiasis) and corneal opacity in later life. There is a growing body of evidence to suggest non-chlamydial bacteria are associated with clinical signs of trachoma, independent of C. trachomatis infection.

methodsWe used deep sequencing of the V1-V3 region of the bacterial 16S rRNA gene to characterize the microbiome of the conjunctiva of 220 residents of The Gambia, 105 with healthy conjunctivae and 115 with clinical signs of trachoma in the absence of detectable C. trachomatis infection. Deep sequencing was carried out using the Roche-454 platform. Sequence data were processed and analyzed through a pipeline developed by the Human Microbiome Project.

resultsThe microbiome of healthy participants was influenced by age and season of sample collection with increased richness and diversity seen in younger participants and in samples collected during the dry season. Decreased diversity and an increased abundance of Corynebacterium and Streptococcus were seen in participants with conjunctival scarring compared to normal controls. Abundance of Corynebacterium was higher still in adults with scarring and trichiasis compared to adults with scarring only.

conclusionsOur results indicate that changes in the conjunctival microbiome occur in trachomatous disease; whether these are a cause or a consequence is yet unknown.

Identifiers

PMID25484919
PMCPMC4256740
OpenAlexW2140375207

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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.