Evidence map›Paper›PMID 23297311›Full record

ArticleThe Journal of physiology2013

A critical re-evaluation of the specificity of action of perivagal capsaicin.

K N Browning, T Babic, G M Holmes, E Swartz, R A Travagli

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
3.7field-weighted citation impact, top 7% 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

38 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
  2. Review
  3. Abdominal ultrasound activates afferent vagus nerve fibers and induces anti-inflammatory effects.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Sex differences in GABAergic neurotransmission to rat DMV neurons.American journal of physiology. Gastrointestinal and liver physiology · 2019
    Article
  15. Article
  16. Article
  17. Vagally mediated gastric effects of brain stem αAmerican journal of physiology. Gastrointestinal and liver physiology · 2018
    Article
  18. Apelin-13 inhibits gastric motility through vagal cholinergic pathway in rats.American journal of physiology. Gastrointestinal and liver physiology · 2018
    Article
  19. Article
  20. Vagally mediated effects of brain stem dopamine on gastric tone and phasic contractions of the rat.American journal of physiology. Gastrointestinal and liver physiology · 2017
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

K N BrowningDepartment of Neural and Behavioral Sciences, Penn State College of Medicine, 500 University Drive, MC H109, Hershey, PA 17033, USA.
T Babic
G M Holmes
E Swartz
R A Travagli
Pennsylvania State University · US

Funding

BRAINSTEM CIRCUITS CONTROLLING GASTROINTESTINAL FUNCTIONR01DK055530 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI BROWNING, KIRSTEEN NAIRN · 1998 to 2020
$4.6M
NIDDK NIH HHS DK 55530NIDDK NIH HHS R01 DK055530
6 · The paper itself

Abstract

Perivagal application of capsaicin (1% solution) is considered to cause a selective degeneration of vagal afferent C fibres and has been used extensively to examine the site of action of many gastrointestinal (GI) neuropeptides. The actions of both capsaicin and GI neuropeptides may not be restricted to vagal afferent fibres, however, as other non-sensory neurones have displayed sensitivity to capsaicin and brainstem microinjections of these neuropeptides induce GI effects similar to those obtained upon systemic application. The aim of the present study was to test the hypothesis that perivagal capsaicin induces degeneration of vagal efferents controlling GI functions. Experiments were conducted 7-14 days after 30 min unilateral perivagal application of 0.1-1% capsaicin. Immunohistochemical analyses demonstrated that, as following vagotomy, capsaicin induced dendritic degeneration, decreased choline acetyltransferase but increased nitric oxide synthase immunoreactivity in rat dorsal motor nucleus of the vagus (DMV) neurones. Electrophysiological recordings showed a decreased DMV input resistance and excitability due, in part, to the expression of a large conductance calcium-dependent potassium current and the opening of a transient outward potassium window current at resting potential. Furthermore, the number of DMV neurones excited by thyrotrophin-releasing hormone and the gastric motility response to DMV microinjections of TRH were decreased significantly. Our data indicate that perivagal application of capsaicin induced DMV neuronal degeneration and decreased vagal motor responses. Treatment with perivagal capsaicin cannot therefore be considered selective for vagal afferent C fibres and, consequently, care is needed when using perivagal capsaicin to assess the mechanism of action of GI neuropeptides.

Indexed as

Action PotentialsAnimalsBrain StemCalciumCapsaicinCholine O-AcetyltransferaseDendritesGastrointestinal MotilityGene ExpressionMotor NeuronsNitric Oxide SynthasePotassiumRatsRats, Sprague-DawleyThyrotropin-Releasing HormoneVagotomyCalciumCapsaicinCholine O-AcetyltransferaseNitric Oxide SynthasePotassiumThyrotropin-Releasing Hormone

Identifiers

PMID23297311
PMCPMC3607173
OpenAlexW1482716043

What OpenQuestion holds

Textmetadata
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.