Evidence map›Paper›PMID 25596182›Full record

ArticleGut2015

Spatial variation of the colonic microbiota in patients with ulcerative colitis and control volunteers.

A Lavelle, G Lennon, O O'Sullivan, N Docherty, A Balfe, A Maguire, H E Mulcahy, G Doherty, D O'Donoghue, J Hyland and 7 more

Open access · hybridAbstract read
In one paragraph

Article in Gut, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 161 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
161citing papers in PubMed, 2 pooled it
10.2field-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

161 citing papers in PubMed, 2 syntheses or guidelines pooled it, 276 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
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  7. Article
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  20. Research Progress with Atractylone as an Antitumor Agent.Molecules (Basel, Switzerland) · 2024
    Review

101 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

17 authors at 6 institutions in 1 country.

A LavelleUniversity College Dublin, School of Medicine and Medical Science, Dublin, Ireland Centre for Colorectal Disease, Saint Vincent's University Hospital, Dublin, Ireland.
G LennonUniversity College Dublin, School of Medicine and Medical Science, Dublin, Ireland Centre for Colorectal Disease, Saint Vincent's University Hospital, Dublin, Ireland.
O O'SullivanTeagasc, Food Research Centre, Moorepark, Fermoy, County Cork, Ireland.
N DochertyDepartment of Physiology, Trinity College Dublin, Dublin, Ireland.
A BalfeUniversity College Dublin, School of Medicine and Medical Science, Dublin, Ireland.
A MaguireCentre for Colorectal Disease, Saint Vincent's University Hospital, Dublin, Ireland.
H E MulcahyCentre for Colorectal Disease, Saint Vincent's University Hospital, Dublin, Ireland.
G DohertyCentre for Colorectal Disease, Saint Vincent's University Hospital, Dublin, Ireland.
D O'DonoghueCentre for Colorectal Disease, Saint Vincent's University Hospital, Dublin, Ireland.
J HylandCentre for Colorectal Disease, Saint Vincent's University Hospital, Dublin, Ireland.
R P RossTeagasc, Food Research Centre, Moorepark, Fermoy, County Cork, Ireland Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland.
J C Coffey4i Centre for Interventions in Infection, Inflammation and Immunity, Graduate Entry Medical School, University of Limerick, Limerick, Ireland.
K SheahanCentre for Colorectal Disease, Saint Vincent's University Hospital, Dublin, Ireland.
P D CotterTeagasc, Food Research Centre, Moorepark, Fermoy, County Cork, Ireland Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland.
F ShanahanAlimentary Pharmabiotic Centre, University College Cork, Cork, Ireland.
D C WinterUniversity College Dublin, School of Medicine and Medical Science, Dublin, Ireland Centre for Colorectal Disease, Saint Vincent's University Hospital, Dublin, Ireland.
P R O'ConnellUniversity College Dublin, School of Medicine and Medical Science, Dublin, Ireland Centre for Colorectal Disease, Saint Vincent's University Hospital, Dublin, Ireland.
St. Vincent's University Hospital · IEUniversity College Dublin · IETeagasc - The Irish Agriculture and Food Development Authority · IEUniversity College Cork · IETrinity College Dublin · IEUniversity of Limerick · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThe relevance of spatial composition in the microbial changes associated with UC is unclear. We coupled luminal brush samples, mucosal biopsies and laser capture microdissection with deep sequencing of the gut microbiota to develop an integrated spatial assessment of the microbial community in controls and UC.

designA total of 98 samples were sequenced to a mean depth of 31,642 reads from nine individuals, four control volunteers undergoing routine colonoscopy and five patients undergoing surgical colectomy for medically-refractory UC. Samples were retrieved at four colorectal locations, incorporating the luminal microbiota, mucus gel layer and whole mucosal biopsies.

resultsInterpersonal variability accounted for approximately half of the total variance. Surprisingly, within individuals, asymmetric Eigenvector map analysis demonstrated differentiation between the luminal and mucus gel microbiota, in both controls and UC, with no differentiation between colorectal regions. At a taxonomic level, differentiation was evident between both cohorts, as well as between the luminal and mucosal compartments, with a small group of taxa uniquely discriminating the luminal and mucosal microbiota in colitis. There was no correlation between regional inflammation and a breakdown in this spatial differentiation or bacterial diversity.

conclusionsOur study demonstrates a conserved spatial structure to the colonic microbiota, differentiating the luminal and mucosal communities, within the context of marked interpersonal variability. While elements of this structure overlap between UC and control volunteers, there are differences between the two groups, both in terms of the overall taxonomic composition and how spatial structure is ascribable to distinct taxa.

Indexed as

AdultBacteriaBiopsyColitis, UlcerativeColonColonoscopyFemaleHumansIntestinal MucosaMaleMicrobiotaMiddle AgedRNA, BacterialVolunteersYoung AdultRNA, BacterialCOLONIC BACTERIAINFLAMMATORY BOWEL DISEASEINTESTINAL MICROBIOLOGYULCERATIVE COLITIS

Identifiers

PMID25596182
PMCPMC4602252
OpenAlexW2105480441

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.