Evidence map›Paper›PMID 32220613›Full record

ArticleClinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association2021

Persistent Diarrhea in Patients With Crohn's Disease After Mucosal Healing Is Associated With Lower Diversity of the Intestinal Microbiome and Increased Dysbiosis.

Karen Boland, Larbi Bedrani, Williams Turpin, Boyko Kabakchiev, Joanne Stempak, Krzysztof Borowski, Geoffrey Nguyen, A Hillary Steinhart, Michelle I Smith, Kenneth Croitoru and 1 more

Open access · greenAbstract read
In one paragraph

Article in Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
4.3field-weighted citation impact, top 6% 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

18 citing papers in PubMed, 36 citations in OpenAlex.

  1. Irritable bowel syndrome.Nature reviews. Disease primers · 2026
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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

11 authors at 2 institutions in 1 country.

Karen BolandDivision of Gastroenterology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada; Zane Cohen Centre for Digestive Diseases, Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada. Electronic address: karenjboland@gmail.com.
Larbi BedraniZane Cohen Centre for Digestive Diseases, Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.
Williams TurpinZane Cohen Centre for Digestive Diseases, Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.
Boyko KabakchievZane Cohen Centre for Digestive Diseases, Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.
Joanne StempakZane Cohen Centre for Digestive Diseases, Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.
Krzysztof BorowskiZane Cohen Centre for Digestive Diseases, Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.
Geoffrey NguyenDivision of Gastroenterology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.
A Hillary SteinhartDivision of Gastroenterology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.
Michelle I SmithZane Cohen Centre for Digestive Diseases, Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.
Kenneth CroitoruDivision of Gastroenterology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada; Zane Cohen Centre for Digestive Diseases, Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.
Mark S SilverbergDivision of Gastroenterology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada; Zane Cohen Centre for Digestive Diseases, Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.
Lunenfeld-Tanenbaum Research Institute · CAMount Sinai Hospital · CA

Funding

Impact of Genetic Variability on Cellular Pathways and Host-Microbiome InteractioU01DK062423 · NIDDK · SINAI HEALTH SYSTEM · PI MARK S. SILVERBERG · 2002 to 2026
$7.5M
NIDDK NIH HHS U01 DK062423
6 · The paper itself

Abstract

BACKGROUND &

aimsIn patients with inflammatory bowel diseases (IBDs), symptoms do not always associate with the severity of endoscopic inflammation and can persist after mucosal healing. We investigated whether symptoms in patients with successfully treated IBD are related to the composition of the intestinal microbiome.

methodsWe analyzed 590 tissue biopsy specimens from 215 patients with IBD and 48 healthy individuals (controls). We obtained mucosal biopsy specimens from 2 colon sites (ascending and rectosigmoid) and from the terminal ileum along with clinical data. Bacterial DNA was extracted from the biopsy specimens and the V4 region of 16s ribosomal RNA sequenced by Miseq and processed using the QIIME v1.9 pipeline.

resultsMucosal biopsy specimens from patients with Crohn's disease (CD) who achieved mucosal healing (Mayo scores of 0-1 or segmental endoscopic severity CD scores of 0-5) had lower Chao1 diversity than biopsy specimens from patients with ulcerative colitis (UC) or unclassified IBD (IBD-U), or controls. After endoscopic evidence of improvement in patients with UC or IBD-U, diversity of the tissue-associated microbiota did not differ significantly from that of controls. Colon biopsy specimens from patients with CD had lower microbial diversity, before and after healing (segmental endoscopic severity CD scores, 0-2), than colon biopsy specimens from controls (P < .002). In patients with CD who achieved mucosal healing, residual clinical activity (CD activity index scores >150; P = .03) and persistent diarrhea were associated with reduced microbial diversity (P = .01). Continued diarrhea was associated with a trend toward dysbiosis, based on the microbial dysbiosis index (P = .059). In patients with UC or IBD-U with moderate to severe inflammation, increasing severity of diarrhea was associated with reduced microbial diversity (P = .03).

conclusionsIn an analysis of biopsy specimens from patients with IBD and controls, we found that despite endoscopic evidence of improvement or remission, α-diversity of the tissue-associated intestinal microbiome remained lower in patients with CD than in controls. This observation, along with the reduced Chao1 diversity and greater dysbiosis in intestinal microbiota of patients with residual symptoms of IBD, indicates that microbiome composition could be associated with persistent diarrhea.

Indexed as

Colitis, UlcerativeCrohn DiseaseGastrointestinal MicrobiomeDiarrheaDysbiosisHumansIntestinal MucosaMicrobeOutcomePrognostic FactorResponse to Therapy

Identifiers

PMID32220613
PMCPMC7511440
OpenAlexW3013719235

What OpenQuestion holds

Textmetadata
LicenceTDM
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.