Evidence map›Paper›PMID 20498227›Full record

ArticleThe Journal of physiology2010

Intracellular Ca(2+) and TRPM5-mediated membrane depolarization produce ATP secretion from taste receptor cells.

Yijen A Huang, Stephen D Roper

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
8.4field-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

58 citing papers in PubMed, 96 citations in OpenAlex.

  1. Temperature effects on taste preferences are influenced by TRPM8.bioRxiv : the preprint server for biology · 2026
    Article
  2. Article
  3. Review
  4. TRPM3, TRPM4, and TRPM5 as thermo-sensitive channels.The journal of physiological sciences : JPS · 2024
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. "Tripartite Synapses" in Taste Buds: A Role for Type I Glial-like Taste Cells.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  13. Article
  14. On the molecular nature of large-pore channels.Journal of molecular biology · 2021
    Review
  15. Recent Advances in Understanding Peripheral Taste Decoding I: 2010 to 2020.Endocrinology and metabolism (Seoul, Korea) · 2021
    Review
  16. Sensing Senses: Optical Biosensors to Study Gustation.Sensors (Basel, Switzerland) · 2020
    Review
  17. Review
  18. Article
  19. Article
  20. 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

2 authors at 1 institution in 1 country.

Yijen A HuangDepartment of Physiology and Biophysics, University of Miami School of Medicine, Miami, FL 33136, USA.
Stephen D Roper
University of Miami · US

Funding

CHEMOSENSORY TRANSDUCTION IN TASTE CELLSR01DC000374 · NIDCD · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI ROPER, STEPHEN D. · 1989 to 2012
$4.2M
A new method to measure taste bud functionR01DC007630 · NIDCD · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI ROPER, STEPHEN D. · 2006 to 2016
$3.1M
NIDCD NIH HHS 5R01DC000374NIDCD NIH HHS 5R01DC007630NIDCD NIH HHS R01 DC000374NIDCD NIH HHS R01 DC007630
6 · The paper itself

Abstract

ATP is a transmitter secreted from taste bud receptor (Type II) cells through ATP-permeable gap junction hemichannels most probably composed of pannexin 1. The elevation of intracellular Ca(2+) and membrane depolarization are both believed to be involved in transmitter secretion from receptor cells, but their specific roles have not been fully elucidated. In the present study, we show that taste-evoked ATP secretion from mouse vallate receptor cells is evoked by the combination of intracellular Ca(2+) release and membrane depolarization. Unexpectedly, ATP secretion is not blocked by tetrodotoxin, indicating that transmitter release from these cells still takes place in the absence of action potentials. Taste-evoked ATP secretion is absent in receptor cells isolated from TRPM5 knockout mice or in taste cells from wild type mice where current through TRPM5 channels has been eliminated. These findings suggest that membrane voltage initiated by TRPM5 channels is required for ATP secretion during taste reception. Nonetheless, even in the absence of TRPM5 channel activity, ATP release could be triggered by depolarizing cells with KCl. Collectively, the findings indicate that taste-evoked elevation of intracellular Ca(2+) has a dual role: (1) Ca(2+) opens TRPM5 channels to depolarize receptor cells and (2) Ca(2+) plus membrane depolarization opens ATP-permeable gap junction hemichannels.

Indexed as

Action PotentialsAdenosine TriphosphateAnimalsCalciumCell MembraneCell SeparationCHO CellsCricetinaeCricetulusElectric StimulationElectrophysiologyFemaleMaleMiceMice, Inbred C57BLNeurotransmitter AgentsAdenosine TriphosphateCalciumNeurotransmitter AgentsTrpm5 protein, mouseTRPM Cation Channels

Identifiers

PMID20498227
PMCPMC2915511
OpenAlexW1600689548

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.