Evidence map›Paper›PMID 19012737›Full record

ArticleJournal of neurochemistry2009

The glutamatergic nature of TRPV1-expressing neurons in the spinal dorsal horn.

Hong-Yi Zhou, Shao-Rui Chen, Hong Chen, Hui-Lin Pan

Open access · greenAbstract read
In one paragraph

Article in Journal of neurochemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

31 citing papers in PubMed, 56 citations in OpenAlex.

  1. Article
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  4. Histone Methyltransferase G9a in Primary Sensory Neurons Promotes Inflammatory Pain and Transcription ofThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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  14. Spinal Circuits for Touch, Pain, and Itch.Annual review of physiology · 2018
    Review
  15. Article
  16. Article
  17. Article
  18. Persistent Nociception Triggered by Nerve Growth Factor (NGF) Is Mediated by TRPV1 and Oxidative Mechanisms.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015
    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

4 authors at 1 institution in 1 country.

Hong-Yi ZhouDepartment of Anesthesiology and Pain Medicine, The University of Texas M D Anderson Cancer Center, Houston, Texas 77030, USA.
Shao-Rui Chen
Hong Chen
Hui-Lin Pan
The University of Texas MD Anderson Cancer Center · US

Funding

Mechanisms of Neural Plasticity in Neuropathic PainR01GM064830 · NIGMS · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI PAN, HUI-LIN · 2001 to 2010
$2.0M
Spinal Plasticity In Diabetic Neuropathic PainR01NS045602 · NINDS · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI PAN, HUI-LIN · 2003 to 2010
$1.9M
NIGMS NIH HHS GM64830NIGMS NIH HHS R01 GM064830NINDS NIH HHS NS45602NINDS NIH HHS R01 NS045602
6 · The paper itself

Abstract

The transient receptor potential vanilloid receptor 1 (TRPV1) is expressed on primary afferent terminals and spinal dorsal horn neurons. However, the neurochemical phenotypes and functions of TRPV1-expressing post-synaptic neurons in the spinal cord are not clear. In this study, we tested the hypothesis that TRPV1-expressing dorsal horn neurons are glutamatergic. Immunocytochemical labeling revealed that TRPV1 and vesicular glutamate transporter-2 were colocalized in dorsal horn neurons and their terminals in the rat spinal cord. Resiniferatoxin (RTX) treatment or dorsal rhizotomy ablated TRPV1-expressing primary afferents but did not affect TRPV1- and vesicular glutamate transporter-2-expressing dorsal horn neurons. Capsaicin significantly increased the frequency of glutamatergic spontaneous excitatory post-synaptic currents and miniature excitatory post-synaptic currents in almost all the lamina II neurons tested in control rats. In RTX-treated or dorsal rhizotomized rats, capsaicin still increased the frequency of spontaneous excitatory post-synaptic currents and miniature excitatory post-synaptic currents in the majority of neurons examined, and this effect was abolished by a TRPV1 blocker or by non-NMDA receptor antagonist. In RTX-treated or in dorsal rhizotomized rats, capsaicin also produced an inward current in a subpopulation of lamina II neurons. However, capsaicin had no effect on GABAergic and glycinergic spontaneous inhibitory post-synaptic currents of lamina II neurons in RTX-treated or dorsal rhizotomized rats. Collectively, our study provides new histological and functional evidence that TRPV1-expressing dorsal horn neurons in the spinal cord are glutamatergic and that they mediate excitatory synaptic transmission. This finding is important to our understanding of the circuitry and phenotypes of intrinsic dorsal horn neurons in the spinal cord.

Indexed as

6-Cyano-7-nitroquinoxaline-2,3-dioneAnimalsCapsaicinDiterpenesExcitatory Amino Acid AntagonistsExcitatory Postsynaptic PotentialsGanglia, SpinalGene ExpressionGlutamic AcidGlycoproteinsIn Vitro TechniquesLectinsMaleMuscarinic AgonistsOxotremorinePatch-Clamp Techniques6-Cyano-7-nitroquinoxaline-2,3-dioneCapsaicinDiterpenesExcitatory Amino Acid AntagonistsGlutamic AcidGlycoproteinsLectinsMuscarinic AgonistsOxotremorineresiniferatoxinSlc17a6 protein, ratTrpv1 protein, ratTRPV Cation ChannelsVcan protein, ratVersicansVesicular Glutamate Transport Protein 2

Identifiers

PMID19012737
PMCPMC2688444
OpenAlexW2065944920

What OpenQuestion holds

Textmetadata
LicenceTDM
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.