Evidence map›Paper›PMID 14634201›Full record

ArticleThe Journal of physiology2004

Activation of bronchopulmonary vagal afferent nerves with bradykinin, acid and vanilloid receptor agonists in wild-type and TRPV1-/- mice.

M Kollarik, B J Undem

Open access · greenAbstract readComparative Study
In one paragraph

Article in The Journal of physiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed
3.5field-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

63 citing papers in PubMed, 154 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Infectious and Inflammatory Pathways to Cough.Annual review of physiology · 2023
    Review
  7. Article
  8. KThe Journal of physiology · 2022
    Article
  9. Article
  10. Review
  11. Air Pollution-Induced Autonomic Modulation.Physiology (Bethesda, Md.) · 2020
    Review
  12. Article
  13. Article
  14. Review
  15. Review
  16. Review
  17. Targeting C-fibers for peripheral acting anti-tussive drugs.Pulmonary pharmacology & therapeutics · 2019
    Review
  18. Article
  19. Review
  20. Opposing effects of bronchopulmonary C-fiber subtypes on cough in guinea pigs.American journal of physiology. Regulatory, integrative and comparative physiology · 2018
    Article

3 more citing papers are in PubMed but not listed here.

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

2 authors at 2 institutions in 1 country.

M KollarikJohns Hopkins Asthma Center, Johns Hopkins School of Medicine, 5501 Hopkins Bayview Circle, Baltimore, MD 21224, USA.
B J Undem
Johns Hopkins Bayview Medical Center · USJohns Hopkins University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The vanilloid receptor TRPV1 (formerly VR1) has been implicated in the activation of nociceptive sensory nerves by capsaicin, noxious heat, protons, bradykinin, cannabinoids such as anandamide, and certain metabolites of arachidonic acid. Using TRPV1 knockout mouse (TRPV1-/-) we address the question of whether TRPV1 is obligatory for action potential discharge in vagal C-fibre terminals evoked by capsaicin, anandamide, acid and bradykinin. The response of a defined subtype of the vagal afferent bronchopulmonary C-fibres (conduction velocity < 0.7 ms(-1)) to the putative TRPV1 activators was studied in vitro in the mouse isolated/perfused lung-nerve preparation. Capsaicin (1 microm) evoked action potential discharge of approximately 90% (28/31) of C-fibres in the TRPV1+/+ mice, but failed to activate bronchopulmonary C-fibres in TRPV1-/- animals (n = 10). Anandamide (3-100 microm) induced concentration-dependent activation of capsaicin-sensitive TRPV1+/+ C-fibres with a threshold of 3-10 microm, but failed to evoke substantive discharge in TRPV1-/- C-fibres. In the TRPV1+/+ mice, the B2 receptor-mediated activation by bradykinin (1 microm) was restricted to the capsaicin-sensitive C-fibres. Bradykinin was effective in evoking B2 receptor-mediated action potential discharge in TRPV1-/- C-fibres, but the response was significantly (P < 0.05) less persistent than in TRPV1+/+ C-fibres. Exposing the tissue to acid (pH = 5) excited both TRPV1+/+ and TRPV1-/- C-fibres. We conclude that TRPV1 is obligatory for vagal C-fibre activation by capsaicin and anandamide. By contrast, whereas TRPV1 may have a modulatory role in bradykinin and acid-induced activation of bronchopulmonary C-fibres, it is not required for action potential discharge evoked by these stimuli.

Indexed as

Action PotentialsAfferent PathwaysAnimalsArachidonic AcidsBradykininDose-Response Relationship, DrugEndocannabinoidsIn Vitro TechniquesLungMaleMiceMice, Inbred C57BLMice, KnockoutNerve Fibers, UnmyelinatedPolyunsaturated AlkamidesReceptors, DruganandamideArachidonic AcidsBradykininEndocannabinoidsPolyunsaturated AlkamidesReceptors, Drug

Identifiers

PMID14634201
PMCPMC1664811
OpenAlexW2117953016

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.