Evidence map›Paper›PMID 38383905›Full record

ArticleCell and tissue research2024

Identification of vagal afferent nerve endings in the mouse colon and their spatial relationship with enterochromaffin cells.

Nick J Spencer, Melinda A Kyloh, Lee Travis, Timothy J Hibberd

Open access · hybridAbstract read
In one paragraph

Article in Cell and tissue research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
9.3field-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

22 citing papers in PubMed, 20 citations in OpenAlex.

  1. Trial
  2. Review
  3. Enteroendocrine cells wire the gut-brain vagal axis.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Gut-brain communication: types of sensory nerves and mechanisms of activation.Nature reviews. Gastroenterology & hepatology · 2026
    Review
  8. Mechanisms and clinical implications of gut-brain interactions.The Journal of clinical investigation · 2026
    Review
  9. Article
  10. Review
  11. Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Unique properties of proximal and distal colon reflect distinct motor functions.American journal of physiology. Gastrointestinal and liver physiology · 2025
    Review
  17. Article
  18. Article
  19. Spinal sensory innervation of the intestine.Current opinion in neurobiology · 2025
    Review
  20. Review
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

4 authors at 1 institution in 1 country.

Nick J SpencerVisceral Neurophysiology Laboratory, Flinders Health and Medical Research Institute & College of Medicine and Public Health, Flinders University of South Australia, GPO Box 2100, Bedford Park, Adelaide, South Australia, 5042, Australia. Nicholas.spencer@flinders.edu.au.ORCID http://orcid.org/0000-0003-2190-5303
Melinda A KylohVisceral Neurophysiology Laboratory, Flinders Health and Medical Research Institute & College of Medicine and Public Health, Flinders University of South Australia, GPO Box 2100, Bedford Park, Adelaide, South Australia, 5042, Australia.
Lee TravisVisceral Neurophysiology Laboratory, Flinders Health and Medical Research Institute & College of Medicine and Public Health, Flinders University of South Australia, GPO Box 2100, Bedford Park, Adelaide, South Australia, 5042, Australia.
Timothy J HibberdVisceral Neurophysiology Laboratory, Flinders Health and Medical Research Institute & College of Medicine and Public Health, Flinders University of South Australia, GPO Box 2100, Bedford Park, Adelaide, South Australia, 5042, Australia.
Flinders University · AU

Funding

Australian Research Council DP220100070National Health and Medical Research Council 1156416
6 · The paper itself

Abstract

Understanding how the gut communicates with the brain, via sensory nerves, is of significant interest to medical science. Enteroendocrine cells (EEC) that line the mucosa of the gastrointestinal tract release neurochemicals, including the largest quantity of 5-hydroxytryptamine (5-HT). How the release of substances, like 5-HT, from enterochromaffin (EC) cells activates vagal afferent nerve endings is unresolved. We performed anterograde labelling from nodose ganglia in vivo and identified vagal afferent axons and nerve endings in the mucosa of whole-mount full-length preparations of mouse colon. We then determined the spatial relationship between mucosal-projecting vagal afferent nerve endings and EC cells in situ using 3D imaging. The mean distances between vagal afferent nerve endings in the mucosa, or nearest varicosities along vagal afferent axon branches, and the nearest EC cell were 29.6 ± 19.2 μm (n = 107, N = 6) and 25.7 ± 15.2 μm (n = 119, N = 6), respectively. No vagal afferent endings made close contacts with EC cells. The distances between EC cells and vagal afferent endings are many hundreds of times greater than known distances between pre- and post-synaptic membranes (typically 10-20 nm) that underlie synaptic transmission in vertebrates. The absence of any close physical contacts between 5-HT-containing EC cells and vagal afferent nerve endings in the mucosa leads to the inescapable conclusion that the mechanism by which 5-HT release from ECs in the colonic mucosa occurs in a paracrine fashion, to activate vagal afferents.

Indexed as

ColonEnterochromaffin CellsVagus NerveAnimalsMaleMiceMice, Inbred C57BLNerve EndingsNeurons, AfferentNodose GanglionEnterochromaffin cellGut-brain axisSerotoninSpinal afferentVagal afferent anterograde tracing

Identifiers

PMID38383905
PMCPMC11144134
OpenAlexW4392774188

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.