Evidence map›Paper›PMID 14762142›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2004

KCNQ2 is a nodal K+ channel.

Jérôme J Devaux, Kleopas A Kleopa, Edward C Cooper, Steven S Scherer

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 227 papers.

0numbers the graph read from it
0cells of the map it votes in
227citing 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

227 citing papers in PubMed, 439 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Review
  4. Coupling of functionality to trafficking of KCNQ2/3 potassium channels at the axon initial segment.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Cytoskeletal scaffolding of NaCurrent opinion in cell biology · 2025
    Review
  9. Article
  10. Review
  11. Review
  12. Whole exome sequencing revealed ultra-rare genetic variations in juvenile myoclonic epilepsy.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Article
  13. Article
  14. Review
  15. An ankyrin G-binding motif mediates TRAAK periodic localization at axon initial segments of hippocampal pyramidal neurons.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  16. Plural molecular and cellular mechanisms of pore domainbioRxiv : the preprint server for biology · 2024
    Article
  17. Review
  18. Glial KCNQ KNeuron · 2024
    Article
  19. Functional myelin in cognition and neurodevelopmental disorders.Cellular and molecular life sciences : CMLS · 2024
    Review
  20. Article

167 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 2 institutions in 3 countries.

Jérôme J DevauxDepartment of Neurology, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-6077, USA. jdevaux@mail.med.upenn.edu
Kleopas A Kleopa
Edward C Cooper
Steven S Scherer
University of Pennsylvania · USInstitute for Neurosciences of Montpellier · FR

Funding

Mechanisms of benign neonatal familial convulsionsR01NS049119 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI COOPER, EDWARD C · 2005 to 2017
$3.8M
The Role of Connexin32 in the Pathogenesis of CMTXR01NS042878 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI SCHERER, STEVEN SIMON · 2002 to 2006
$1.9M
NINDS NIH HHS R01 NS042878NINDS NIH HHS R01 NS049119NINDS NIH HHS R01 NS42878
6 · The paper itself

Abstract

Mutations in the gene encoding the K+ channel KCNQ2 cause neonatal epilepsy and myokymia, indicating that KCNQ2 regulates the excitability of CNS neurons and motor axons, respectively. We show here that KCNQ2 channels are functional components of axon initial segments and nodes of Ranvier, colocalizing with ankyrin-G and voltage-dependent Na+ channels throughout the CNS and PNS. Retigabine, which opens KCNQ channels, diminishes axonal excitability. Linopirdine, which blocks KCNQ channels, prolongs the repolarization of the action potential in neonatal nerves. The clustering of KCNQ2 at nodes and initial segments lags that of ankyrin-G during development, and both ankyrin-G and KCNQ2 can be coimmunoprecipitated in the brain. KCNQ3 is also a component of some initial segments and nodes in the brain. The diminished activity of mutant KCNQ2 channels accounts for neonatal epilepsy and myokymia; the cellular locus of these effects may be axonal initial segments and nodes.

Indexed as

Amino Acid SubstitutionAnimalsAnkyrinsBrainHeLa CellsHumansImmunoblottingImmunohistochemistryKCNQ2 Potassium ChannelKCNQ3 Potassium ChannelMiceMutationMyokymiaOptic NervePotassium ChannelsPotassium Channels, Voltage-GatedANK3 protein, humanAnk3 protein, mouseAnk3 protein, ratAnkyrinsKCNQ2 Potassium ChannelKCNQ2 protein, humanKcnq2 protein, ratKCNQ3 Potassium ChannelKCNQ3 protein, humanKcnq3 protein, mouseKcnq3 protein, ratPotassium ChannelsPotassium Channels, Voltage-Gated

Identifiers

PMID14762142
PMCPMC6793582
OpenAlexW2165094762

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.