Evidence map›Paper›PMID 25686526›Full record

ArticleNeuroscience2015

Local knockdown of the NaV1.6 sodium channel reduces pain behaviors, sensory neuron excitability, and sympathetic sprouting in rat models of neuropathic pain.

W Xie, J A Strong, J-M Zhang

Open access · greenAbstract read
In one paragraph

Article in Neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 1 pooled it
5.8field-weighted citation impact, top 3% 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

65 citing papers in PubMed, 1 synthesis or guideline pooled it, 90 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Shaping the Action Potential in Dorsal Root and Trigeminal Ganglia Neurons: Relevance to Pain Mechanisms.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Review
  4. Article
  5. Review
  6. Small-molecule natural product sophoricoside reduces peripheral neuropathic pain via directly blocking of NaV1.6 in dorsal root ganglion nociceptive neurons.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
    Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Upregulation of NaCells · 2022
    Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Autistic-like behavior, spontaneous seizures, and increased neuronal excitability in a Scn8a mouse model.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2021
    Article

5 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

3 authors at 1 institution in 1 country.

W XiePain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0531, USA. Electronic address: XIEWE@UCMAIL.UC.EDU.
J A StrongPain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0531, USA. Electronic address: Judith.Strong@uc.edu.
J-M ZhangPain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0531, USA. Electronic address: Jun-Ming.Zhang@uc.edu.
University of Cincinnati Medical Center · US

Funding

STUDY OF ACTIVITY-DEPENDENT SYMPATHETIC SPROUTINGR01NS045594 · NINDS · UNIVERSITY OF CINCINNATI · PI ZHANG, JUN-MING · 2004 to 2025
$8.6M
NEURAL AND CHEMICAL BASIS OF PATHOLOGIC PAINR01NS055860 · NINDS · UNIVERSITY OF CINCINNATI · PI ZHANG, JUN-MING · 2008 to 2017
$3.7M
NINDS NIH HHS NS45594NINDS NIH HHS NS55860NINDS NIH HHS R01 NS045594NINDS NIH HHS R01 NS055860
6 · The paper itself

Abstract

In the spinal nerve ligation (SNL) model of neuropathic pain, as in other pain models, abnormal spontaneous activity of myelinated sensory neurons occurs early and is essential for establishing pain behaviors and other pathologies. Sympathetic sprouting into the dorsal root ganglion (DRG) is observed after SNL, and sympathectomy reduces pain behavior. Sprouting and spontaneous activity may be mutually reinforcing: blocking neuronal activity reduces sympathetic sprouting, and sympathetic spouts functionally increase spontaneous activity in vitro. However, most studies in this field have used nonspecific methods to block spontaneous activity, methods that also block evoked and normal activity. In this study, we injected small inhibitory (si) RNA directed against the NaV1.6 sodium channel isoform into the DRG before SNL. This isoform can mediate high-frequency repetitive firing, like that seen in spontaneously active neurons. Local knockdown of NaV1.6 markedly reduced mechanical pain behaviors induced by SNL, reduced sympathetic sprouting into the ligated sensory ganglion, and blocked abnormal spontaneous activity and other measures of hyperexcitability in myelinated neurons in the ligated sensory ganglion. Immunohistochemical experiments showed that sympathetic sprouting preferentially targeted NaV1.6-positive neurons. Under these experimental conditions, NaV1.6 knockdown did not prevent or strongly alter single evoked action potentials, unlike previous less specific methods used to block spontaneous activity. NaV1.6 knockdown also reduced pain behaviors in another pain model, chronic constriction of the sciatic nerve, provided the model was modified so that the lesion site was relatively close to the siRNA-injected lumbar DRGs. The results highlight the relative importance of abnormal spontaneous activity in establishing both pain behaviors and sympathetic sprouting, and suggest that the NaV1.6 isoform may have value as a therapeutic target.

Indexed as

Action PotentialsAnimalsDisease Models, AnimalFemaleGanglia, SpinalGene Knockdown TechniquesHyperalgesiaLigationMaleNAV1.6 Voltage-Gated Sodium ChannelNerve Fibers, MyelinatedNeuralgiaRats, Sprague-DawleyRNA, Small InterferingSciatic NerveSensory Receptor CellsNAV1.6 Voltage-Gated Sodium ChannelRNA, Small InterferingScn8a protein, ratallodyniaectopic activityScn8aspinal nerve ligationspontaneous activitysympathetic sprouting

Identifiers

PMID25686526
PMCPMC4369447
OpenAlexW2038050499

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.