Evidence map›Paper›PMID 28228489›Full record

ArticleGut2018

Age-dependent shift in macrophage polarisation causes inflammation-mediated degeneration of enteric nervous system.

Laren Becker, Linh Nguyen, Jaspreet Gill, Subhash Kulkarni, Pankaj Jay Pasricha, Aida Habtezion

Open access · greenAbstract read
In one paragraph

Article in Gut, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 118 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
118citing papers in PubMed, 1 pooled it
9.2field-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

118 citing papers in PubMed, 1 synthesis or guideline pooled it, 184 citations in OpenAlex.

  1. Pooled it
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  4. Phenotypic switching of gastrointestinal smooth muscle cells and the regulatory role of macrophages: a literature review.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2026
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58 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Laren BeckerDivision of Gastroenterology and Hepatology, Department of Medicine, Stanford University, Stanford, California, USA.
Linh NguyenDivision of Gastroenterology and Hepatology, Department of Medicine, Stanford University, Stanford, California, USA.
Jaspreet GillDivision of Gastroenterology and Hepatology, Department of Medicine, Stanford University, Stanford, California, USA.
Subhash KulkarniDivision of Gastroenterology and Hepatology, Department of Medicine, Johns Hopkins University, Baltimore, Maryland, USA.
Pankaj Jay PasrichaDivision of Gastroenterology and Hepatology, Department of Medicine, Johns Hopkins University, Baltimore, Maryland, USA.
Aida HabtezionDivision of Gastroenterology and Hepatology, Department of Medicine, Stanford University, Stanford, California, USA.
Stanford University · USJohns Hopkins Medicine · USJohns Hopkins University · US

Funding

Stanford Islet Research CoreP30DK116074 · NIDDK · STANFORD UNIVERSITY · PI Seung K Kim · 2017 to 2026
$19.5M
Translational Research Enhancement CoreP30DK089502 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI POTTER, JAMES JOHN · 2011 to 2020
$12.0M
Genes, Environment & Neural Stem Cell Transplantation in the GutR01DK080920 · NIDDK · STANFORD UNIVERSITY · PI PASRICHA, PANKAJ J · 2009 to 2017
$2.9M
Age induced enteric neural stem cell loss through Foxo3 dependent inflammationK08DK103966 · NIDDK · STANFORD UNIVERSITY · PI BECKER, LAREN · 2015 to 2019
$912k
Enteric Neural Stem Cell Loss with Aging: Role of Immune Cells and InflammationR21AG049622 · NIA · STANFORD UNIVERSITY · PI HABTEZION, AIDA · 2015 to 2016
$446k
Effect of aging on enteric neural stem cells is dependent on the PI3K/Akt pathwayR03AG045098 · NIA · STANFORD UNIVERSITY · PI BECKER, LAREN · 2013 to 2014
$158k
NIA NIH HHS R03 AG045098NIA NIH HHS R21 AG049622NIDDK NIH HHS K08 DK103966NIDDK NIH HHS P30 DK089502NIDDK NIH HHS P30 DK116074NIDDK NIH HHS R01 DK080920
6 · The paper itself

Abstract

objectiveThe enteric nervous system (ENS) undergoes neuronal loss and degenerative changes with age. The cause of this neurodegeneration is poorly understood. Muscularis macrophages residing in close proximity to enteric ganglia maintain neuromuscular function via direct crosstalk with enteric neurons and have been implicated in the pathogenesis of GI motility disorders like gastroparesis and postoperative ileus. The aim of this study was to assess whether ageing causes alterations in macrophage phenotype that contributes to age-related degeneration of the ENS.

designLongitudinal muscle and myenteric plexus from small intestine of young, mid-aged and old mice were dissected and prepared for whole mount immunostaining, flow cytometry, Luminex immunoassays, western blot analysis, enteric neural stem cell (ENSC) isolation or conditioned media. Bone marrow derived macrophages were prepared and polarised to classic (M1) or alternative (M2) activation states. Markers for macrophage phenotype were measured using quantitative RT-PCR.

resultsAgeing causes a shift in macrophage polarisation from anti-inflammatory 'M2' to proinflammatory 'M1' that is associated with a rise in cytokines and immune cells in the ENS. This phenotypic shift is associated with a neural response to inflammatory signals, increase in apoptosis and loss of enteric neurons and ENSCs, and delayed intestinal transit. An age-dependent decrease in expression of the transcription factor FoxO3, a known longevity gene, contributes to the loss of anti-inflammatory behaviour in macrophages of old mice, and FoxO3-deficient mice demonstrate signs of premature ageing of the ENS.

conclusionsA shift by macrophages towards a proinflammatory phenotype with ageing causes inflammation-mediated degeneration of the ENS.

Indexed as

AgingAnimalsApoptosisBlotting, WesternCells, CulturedCytokinesEnteric Nervous SystemFlow CytometryForkhead Box Protein O3Gene Expression RegulationInflammationMacrophagesMaleMiceMice, Inbred C57BLPhenotypeCytokinesForkhead Box Protein O3FoxO3 protein, mouseAGEINGENTERIC NERVOUS SYSTEMINFLAMMATIONMACROPHAGES

Identifiers

PMID28228489
PMCPMC5565713
OpenAlexW2591085270

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.