Evidence map›Paper›PMID 9151727›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience1997

The responses of rat trigeminal ganglion neurons to capsaicin and two nonpungent vanilloid receptor agonists, olvanil and glyceryl nonamide.

L Liu, Y Lo, I Chen, S A Simon

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
3.9field-weighted citation impact, top 6% 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

24 citing papers in PubMed, 105 citations in OpenAlex.

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  14. Cannabinoids desensitize capsaicin and mustard oil responses in sensory neurons via TRPA1 activation.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2008
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  19. TRPV1 recapitulates native capsaicin receptor in sensory neurons in association with Fas-associated factor 1.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2006
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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 4 institutions in 2 countries.

L LiuDepartments of Neurobiology and Anesthesiology, Duke University Medical Center, Durham, North Carolina 27710, USA.
Y Lo
I Chen
S A Simon
Duke Medical Center · USDuke University · USDuke University Hospital · USKaohsiung Medical University · TW

Funding

MODULATION OF TASTE RESPONSES BY THE TRIGEMINAL SYSTEMR01DC001065 · NIDCD · DUKE UNIVERSITY · PI SIMON, SIDNEY A · 1991 to 2010
$3.1M
NIDCD NIH HHS DC 01065
6 · The paper itself

Abstract

Capsaicin, the pungent ingredient in hot pepper, activates and subsequently desensitizes a subset of polymodal nociceptors. Because its initial application to skin produces pain, nonpungent analogs such as olvanil and glyceryl nonivamide (GLNVA) were synthesized to enhance its clinical use. To explore how these nonpungent analogs differ from capsaicin, whole-cell patch-clamp recordings were performed on cultured rat trigeminal ganglion neurons. In neurons held at -60 mV, capsaicin, olvanil, and GLNVA were found to activate one or two kinetically distinct inward currents. Two inward currents were also activated when extracellular Ca2+ was replaced with Ba2+ and also when intracellular chloride was replaced by aspartate. The reversal potentials of the rapidly and slowly activating currents were 15.3 +/- 6 and -4.0 +/- 2.5 mV, respectively. These data provide strong evidence for subtypes of vanilloid receptors. One difference among these agonists is that, on average, the activation kinetics of the currents evoked by 1 microM olvanil and 30 microM GLNVA are considerably slower than those evoked by 1 microM capsaicin. Measurements of the peak current, Ip, versus agonist concentration were fit to the Hill equation to yield values of the half maximal concentrations (K1/2), and the Hill coefficients (n). For capsaicin, olvanil, and GLNVA, K1/2 = 0.68, 0.59, and 27.0 microM and n = 1.38, 1.32, and 1.24, respectively. We propose that olvanil and GLNVA are nonpungent because they activate different subtypes of receptors and/or because of their activation kinetics (compared with capsaicin) are, on average, slower than the rate they inhibit action potentials from polymodal nociceptors.

Indexed as

AnimalsAnti-Inflammatory Agents, Non-SteroidalCapsaicinCells, CulturedDose-Response Relationship, DrugGlycerolNeuronsPainPatch-Clamp TechniquesRatsRats, Sprague-DawleyReceptors, DrugTachyphylaxisTasteTrigeminal GanglionAnti-Inflammatory Agents, Non-SteroidalCapsaicincapsazepineGlycerolN-(4-O-glycerol-3-methoxybenzyl)nonivamideolvanilReceptors, Drug

Identifiers

PMID9151727
PMCPMC6573573
OpenAlexW2132119503

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.