Evidence map›Paper›PMID 24711432›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

Cholinergic neurotransmission links solitary chemosensory cells to nasal inflammation.

Cecil J Saunders, Michael Christensen, Thomas E Finger, Marco Tizzano

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 125 papers.

0numbers the graph read from it
0cells of the map it votes in
125citing papers in PubMed
7.8field-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

125 citing papers in PubMed, 210 citations in OpenAlex.

  1. Article
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  12. Chemosensory tobacco product toxicology part 1: sensory mechanisms.Toxicological sciences : an official journal of the Society of Toxicology · 2025
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Extragustatory bitter taste receptors in head and neck health and disease.Journal of molecular medicine (Berlin, Germany) · 2024
    Review
  18. Review
  19. Article
  20. Mechanisms and Functions of Sweet Reception in Oral and Extraoral Organs.International journal of molecular sciences · 2024
    Review

65 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

4 authors at 3 institutions in 2 countries.

Cecil J SaundersRocky Mountain Taste and Smell Center, Department of Cellular and Developmental Biology and Neuroscience Program, University of Colorado School of Medicine, Anschutz Medical Center, Aurora, CO 80045.
Michael Christensen
Thomas E Finger
Marco Tizzano
University of Colorado Denver · USAarhus University · DKTaste and Smell Clinic · US

Funding

NIDCD P30 Core: Rocky Mountain Taste and Smell CenterP30DC004657 · NIDCD · UNIVERSITY OF COLORADO DENVER · PI KINNAMON, SUE C., RESTREPO, DIEGO · 2000 to 2014
$7.6M
Nasal Solitary Chemoreceptor Cells: Detection of Pathogenic BacteriaR01DC009820 · NIDCD · UNIVERSITY OF COLORADO DENVER · PI FINGER, THOMAS E, KINNAMON, SUE C. · 2009 to 2013
$2.2M
Nasal solitary chemosensory cells linking irritation to inflammationR03DC012413 · NIDCD · UNIVERSITY OF COLORADO DENVER · PI TIZZANO, MARCO · 2012 to 2014
$445k
NIDCD NIH HHS P30 DC004657NIDCD NIH HHS P30DC04657NIDCD NIH HHS R01 DC009820NIDCD NIH HHS R01DC009820NIDCD NIH HHS R03 DC012413NIDCD NIH HHS R03DC012413
6 · The paper itself

Abstract

Solitary chemosensory cells (SCCs) of the nasal cavity are specialized epithelial chemosensors that respond to irritants through the canonical taste transduction cascade involving Gα-gustducin and transient receptor potential melastatin 5. When stimulated, SCCs trigger peptidergic nociceptive (or pain) nerve fibers, causing an alteration of the respiratory rate indicative of trigeminal activation. Direct chemical excitation of trigeminal pain fibers by capsaicin evokes neurogenic inflammation in the surrounding epithelium. In the current study, we test whether activation of nasal SCCs can trigger similar local inflammatory responses, specifically mast cell degranulation and plasma leakage. The prototypical bitter compound, denatonium, a well-established activator of SCCs, caused significant inflammatory responses in WT mice but not mice with a genetic deletion of elements of the canonical taste transduction cascade, showing that activation of taste signaling components is sufficient to trigger local inflammation. Chemical ablation of peptidergic trigeminal fibers prevented the SCC-induced nasal inflammation, indicating that SCCs evoke inflammation only by neural activity and not by release of local inflammatory mediators. Additionally, blocking nicotinic, but not muscarinic, acetylcholine receptors prevents SCC-mediated neurogenic inflammation for both denatonium and the bacterial signaling molecule 3-oxo-C12-homoserine lactone, showing the necessity for cholinergic transmission. Finally, we show that the neurokinin 1 receptor for substance P is required for SCC-mediated inflammation, suggesting that release of substance P from nerve fibers triggers the inflammatory events. Taken together, these results show that SCCs use cholinergic neurotransmission to trigger peptidergic trigeminal nociceptors, which link SCCs to the neurogenic inflammatory pathway.

Indexed as

Synaptic TransmissionAnimalsCell DegranulationChemoreceptor CellsCholinergic NeuronsExtravasation of Diagnostic and Therapeutic MaterialsInflammationMast CellsMiceModels, BiologicalNasal MucosaNociceptorsNoseReceptors, Neurokinin-1Receptors, NicotinicSignal TransductiongustducinReceptors, Neurokinin-1Receptors, NicotinicTransducinTrpm5 protein, mouseTRPM Cation Channelsairway irritationchemesthesisinnate immunityquorum sensingrhinitis

Identifiers

PMID24711432
PMCPMC4000837
OpenAlexW1965859904

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.