Evidence map›Paper›PMID 33570153›Full record

ArticleInflammatory bowel diseases2021

Human Intestinal Macrophages Are Involved in the Pathology of Both Ulcerative Colitis and Crohn Disease.

Suranga Dharmasiri, Eva M Garrido-Martin, Richard J Harris, Adrian C Bateman, Jane E Collins, J R Fraser Cummings, Tilman Sanchez-Elsner

Open access · hybridAbstract read
In one paragraph

Article in Inflammatory bowel diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 107 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
107citing papers in PubMed, 1 pooled it
21.3field-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

107 citing papers in PubMed, 1 synthesis or guideline pooled it, 171 citations in OpenAlex.

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47 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

7 authors at 3 institutions in 2 countries.

Suranga DharmasiriClinical and Experimental Sciences, Sir Henry Wellcome Laboratories, University of Southampton School of Medicine, Southampton, United Kingdom.
Eva M Garrido-MartinClinical and Experimental Sciences, Sir Henry Wellcome Laboratories, University of Southampton School of Medicine, Southampton, United Kingdom.ORCID 0000-0002-8094-2668
Richard J HarrisClinical and Experimental Sciences, Sir Henry Wellcome Laboratories, University of Southampton School of Medicine, Southampton, United Kingdom.
Adrian C BatemanUniversity Hospital Southampton NHS FT, Southampton, United Kingdom.
Jane E CollinsClinical and Experimental Sciences, Sir Henry Wellcome Laboratories, University of Southampton School of Medicine, Southampton, United Kingdom.
J R Fraser CummingsClinical and Experimental Sciences, Sir Henry Wellcome Laboratories, University of Southampton School of Medicine, Southampton, United Kingdom.
Tilman Sanchez-ElsnerClinical and Experimental Sciences, Sir Henry Wellcome Laboratories, University of Southampton School of Medicine, Southampton, United Kingdom.ORCID 0000-0003-1915-2410
University Hospital Southampton NHS Foundation Trust · GBUniversity of Southampton · GBCentro de Investigación Biomédica en Red de Cáncer · ES

Funding

Cancer Research UK 22100Cancer Research UK C30718/A22100
6 · The paper itself

Abstract

backgroundIntestinal macrophages are key immune cells in the maintenance of intestinal immune homeostasis and have a role in the pathogenesis of inflammatory bowel disease (IBD). However, the mechanisms by which macrophages exert a pathological influence in both ulcerative colitis (UC) and Crohn disease (CD) are not yet well understood.

methodsWe purified intestinal macrophages from gastrointestinal mucosal biopsies (patients with UC, patients with CD, and healthy donors) and analyzed their transcriptome by RNA sequencing and bioinformatics, confirming results with quantitative polymerase chain reaction and immunohistochemistry.

resultsCompared with those of healthy donors, intestinal macrophages in patients with UC and with CD showed cellular reprograming of 1287 and 840 dysregulated genes, respectively (false discovery rate ≤ 0.1). The UC and CD intestinal macrophages showed an activated M1 inflammatory phenotype and the downregulation of genes engaged in drug/xenobiotic metabolism. Only macrophages from CD showed, concomitant to an M1 phenotype, a significant enrichment in the expression of M2 and fibrotic and granuloma-related genes. For the first time, we showed (and validated by quantitative polymerase chain reaction and immunohistochemistry) that intestinal macrophages in patients with IBD present both M1 and M2 features, as recently described for tumor-associated macrophages, that affect key pathways for IBD pathology, represented by key markers such as MMP12 (fibrosis), CXCL9 (T-cell attraction), and CD40 (T-cell activation).

conclusionsOur data support the therapeutic targeting of macrophages to maintain remission in IBD but also indicate that a shift toward an M2 program-as proposed by some reports-may not limit the recruitment and activation of T cells because M2 features do not preclude M1 activation in patients with UC or CD and could exacerbate M2-related CD-specific features such as fibrosis and the formation of granulomas.

Indexed as

ColitisColitis, UlcerativeCrohn DiseaseInflammatory Bowel DiseasesFibrosisHumansIntestinal MucosaMacrophagesCrohn diseaseinflammationinflammatory bowel diseaseintestinal macrophagesulcerative colitis

Identifiers

PMID33570153
PMCPMC8522792
OpenAlexW3126863866

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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.