Evidence map›Paper›PMID 15218076›Full record

ArticleThe Journal of physiology2004

Properties of single voltage-dependent K+ channels in dendrites of CA1 pyramidal neurones of rat hippocampus.

Xixi Chen, Daniel Johnston

Open access · greenAbstract readComparative Study
In one paragraph

Article in The Journal of physiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

46 citing papers in PubMed, 82 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Modeling Dendrites and Spatially-Distributed Neuronal Membrane Properties.Advances in experimental medicine and biology · 2022
    Review
  5. Sodium sensitivity of KJournal of neurophysiology · 2021
    Article
  6. Effects ofJournal of neurophysiology · 2021
    Article
  7. Review
  8. Review
  9. The Role of KFrontiers in physiology · 2020
    Review
  10. Article
  11. Modulation of Kv7 channels and excitability in the brain.Cellular and molecular life sciences : CMLS · 2017
    Review
  12. Article
  13. Analogous synaptic plasticity profiles emerge from disparate channel combinations.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015
    Article
  14. Article
  15. Article
  16. Heteromeric Kv7.2/7.3 channels differentially regulate action potential initiation and conduction in neocortical myelinated axons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2014
    Article
  17. Article
  18. Review
  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.

Xixi ChenDepartment of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA. xixi@ltp.neusc.bcm.tmc.edu
Daniel Johnston
Baylor College of Medicine · US

Funding

Regulation of Neuronal Excitability (P01)P01NS037444 · NINDS · UNIVERSITY OF TEXAS AUSTIN · PI JOHNSTON, DANIEL · 1999 to 2008
$8.4M
CELLULAR INFORMATION PROCESSING IN THE HIPPOCAMPUSR01MH048432 · NIMH · UNIVERSITY OF TEXAS AUSTIN · PI JOHNSTON, DANIEL · 1991 to 2012
$3.8M
PHARMACOLOGY OF MOSSY FIBER SYNAPTIC PLASTICITYR37MH044754 · NIMH · UNIVERSITY OF TEXAS AUSTIN · PI JOHNSTON, DANIEL · 1989 to 2008
$3.2M
NIMH NIH HHS MH44754NIMH NIH HHS MH48432NIMH NIH HHS R01 MH048432NIMH NIH HHS R37 MH044754NINDS NIH HHS NS37444NINDS NIH HHS P01 NS037444
6 · The paper itself

Abstract

Voltage-dependent K(+) channels in the apical dendrites of CA1 pyramidal neurones play important roles in regulating dendritic excitability, synaptic integration, and synaptic plasticity. Using cell-attached, voltage-clamp recordings, we found a large variability in the waveforms of macroscopic K(+) currents in the dendrites. With single-channel analysis, however, we were able to identify four types of voltage-dependent K(+) channels and we categorized them as belonging to delayed-rectifier, M-, D-, or A-type K(+) channels previously described from whole-cell recordings. Delayed-rectifier-type K(+) channels had a single-channel conductance of 19 +/- 0.5 pS, and made up the majority of the sustained K(+) current uniformly distributed along the apical dendrites. The M-type K(+) channels had a single-channel conductance of 11 +/- 0.8 pS, did not inactivate with prolonged membrane depolarization, deactivated with slow kinetics (time constant 100 +/- 6 ms at -40 mV), and were inhibited by bath-applied muscarinic agonist carbachol (10 microm). The D-type K(+) channels had a single-channel conductance of around 18 pS, and inactivated with a time constant of 98 +/- 4 ms at +54 mV. The A-type K(+) channels had a single-channel conductance of 6 +/- 0.6 pS, inactivated with a time constant of 23 +/- 2 ms at +54 mV, and contributed to the majority of the transient K(+) current previously described. These results suggest both functional and molecular complexity for K(+) channels in dendrites of CA1 pyramidal neurones.

Indexed as

AnimalsDendritesHippocampusIn Vitro TechniquesMembrane PotentialsPotassium Channels, Voltage-GatedPyramidal CellsRatsRats, Sprague-DawleyPotassium Channels, Voltage-Gated

Identifiers

PMID15218076
PMCPMC1665081
OpenAlexW2104794671

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.