Cited by 109Inflammatory Bowel DiseaseGastrointestinal motility and disordersNeuropeptides and Animal Physiology

Diverse effects of gut-derived serotonin in intestinal inflammation

Shajib, Md. Sharif, Baranov, Adriana, Khan, Waliul I.·2017·ACS Chemical Neuroscience

Abstract

The gut is the largest producer of serotonin or 5-hydroxytryptamine (5-HT) in the human body, and 5-HT has been recognized as an important signaling molecule in the gut for decades. There are two distinct sources of enteric 5-HT. Mucosal 5-HT is predominantly produced by enterochromaffin (EC) cells of the gastrointestinal (GI) tract, and neuronal 5-HT in the gut is produced by serotonergic neurons of the enteric nervous system (ENS). The quantity of mucosal 5-HT produced vastly eclipses the amount of neuronal 5-HT in the gut. Though it is difficult to separate the functions of neuronal and mucosal 5-HT, in the normal gut both types of enteric 5-HT work synergistically playing a prominent role in the maintenance of GI functions. In inflammatory conditions of the gut, like inflammatory bowel disease (IBD) recent studies have revealed new diverse functions of enteric 5-HT. Mucosal 5-HT plays an important role in the production of pro-inflammatory mediators from immune cells, and neuronal 5-HT provides neuroprotection in the ENS. Based on searches for terms such as "5-HT", "EC cell", "ENS", and "inflammation" in pubmed.gov as well as by utilizing pertinent reviews, the current review aims to provide an update on the role of enteric 5-HT and its immune mediators in the context of intestinal inflammation.

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Registry

Crossref · 10.1021/acschemneuro.6b00414

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149 of 149 references verified0 citation errors · 0 not checkable

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  • A direct effect of intestinally produced 5-HT on the brain is unlikely because it cannot penetrate the blood-brain barrier; stimulation of vagal afferents and regulation of immune responses could be potential signaling pathways.

    “While a direct effect of intestinally produced 5-HT on the brain is unlikely as it cannot penetrate the BBB, stimulation of vagal afferents and regulation of the immune responses could be potential signaling pathways (388, 389).”

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Authors
Shajib, M. S., Baranov, A., & Khan, W. I.
Affiliations
  • McMaster University (CA)
  • Hamilton Regional Laboratory Medicine Program (CA)
Corresponding author
Khan, Waliul I.
Venue
ACS Chemical Neuroscience
Published
2017-03-27
Volume
8
Issue
5
Pages
920-931
ISSN
1948-7193 (ISSN-L)
OpenAlex
W2600368530
Cited by
109
References
149
Citations by year
2026: 9 · 2025: 13 · 2024: 13 · 2023: 13 · 2022: 16 · 2021: 16 · 2020: 14 · 2019: 8 · 2018: 7
FWCI
1.02
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Chemical Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Canadian Institutes of Health Research
  • Crohn’s and Colitis Canada
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
serotonin, intestinal inflammation, enterochromaffin cells, enteric nervous system, serotonergic neurons, inflammatory bowel disease, pro-inflammatory mediators, neuroprotection
MeSH terms
Animals, Enterochromaffin Cells, Humans, Inflammation, Serotonin, Inflammatory Bowel Diseases, Enteric Nervous System, Serotonergic Neurons

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