Evidence map›Paper›PMID 24795551›Full record

ArticleFrontiers in neuroscience2014

Neural mechanisms of peristalsis in the isolated rabbit distal colon: a neuromechanical loop hypothesis.

Phil G Dinning, Lukasz Wiklendt, Taher Omari, John W Arkwright, Nick J Spencer, Simon J H Brookes, Marcello Costa

Open access · goldAbstract read
In one paragraph

Article in Frontiers in neuroscience, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

33 citing papers in PubMed, 69 citations in OpenAlex.

  1. Article
  2. Article
  3. Unique properties of proximal and distal colon reflect distinct motor functions.American journal of physiology. Gastrointestinal and liver physiology · 2025
    Review
  4. Article
  5. Article
  6. Article
  7. Calcium image analysis in the moving gut.Neurogastroenterology and motility · 2023
    Article
  8. Article
  9. Review
  10. Article
  11. Gut feelings: mechanosensing in the gastrointestinal tract.Nature reviews. Gastroenterology & hepatology · 2022
    Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Embryogenesis of the peristaltic reflex.The Journal of physiology · 2019
    Article
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 2 institutions in 1 country.

Phil G DinningDepartment of Gastroenterology and Surgery, Flinders Medical Centre, Flinders University Bedford Park, SA, Australia ; Department of Human Physiology, School of Medicine, Flinders University Bedford Park, SA, Australia.
Lukasz WiklendtDepartment of Human Physiology, School of Medicine, Flinders University Bedford Park, SA, Australia.
Taher OmariDepartment of Human Physiology, School of Medicine, Flinders University Bedford Park, SA, Australia ; Gastroenterology Unit, Child, Youth and Women's Health Service Adelaide, SA, Australia.
John W ArkwrightMaterial Science and Engineering, CSIRO Sydney, NSW, Australia.
Nick J SpencerDepartment of Human Physiology, School of Medicine, Flinders University Bedford Park, SA, Australia.
Simon J H BrookesDepartment of Human Physiology, School of Medicine, Flinders University Bedford Park, SA, Australia.
Marcello CostaDepartment of Human Physiology, School of Medicine, Flinders University Bedford Park, SA, Australia.
Flinders University · AUCommonwealth Scientific and Industrial Research Organisation · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Propulsive contractions of circular muscle are largely responsible for the movements of content along the digestive tract. Mechanical and electrophysiological recordings of isolated colonic circular muscle have demonstrated that localized distension activates ascending and descending interneuronal pathways, evoking contraction orally and relaxation anally. These polarized enteric reflex pathways can theoretically be sequentially activated by the mechanical stimulation of the advancing contents. Here, we test the hypothesis that initiation and propagation of peristaltic contractions involves a neuromechanical loop; that is an initial gut distension activates local and oral reflex contraction and anal reflex relaxation, the subsequent movement of content then acts as new mechanical stimulus triggering sequentially reflex contractions/relaxations at each point of the gut resulting in a propulsive peristaltic contraction. In fluid filled isolated rabbit distal colon, we combined spatiotemporal mapping of gut diameter and intraluminal pressure with a new analytical method, allowing us to identify when and where active (neurally-driven) contraction or relaxation occurs. Our data indicate that gut dilation is associated with propagating peristaltic contractions, and that the associated level of dilation is greater than that preceding non-propagating contractions (2.7 ± 1.4 mm vs. 1.6 ± 1.2 mm; P < 0.0001). These propagating contractions lead to the formation of boluses that are propelled by oral active neurally driven contractions. The propelled boluses also activate neurally driven anal relaxations, in a diameter dependent manner. These data support the hypothesis that neural peristalsis is the consequence of the activation of a functional loop involving mechanical dilation which activates polarized enteric circuits. These produce propulsion of the bolus which activates further anally, polarized enteric circuits by distension, thus closing the neuromechanical loop.

Indexed as

active contractionactive relaxationcolon motilityneural pathwaysperistalsis

Identifiers

PMID24795551
PMCPMC3997013
OpenAlexW2059078232

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.