Evidence map›Paper›PMID 21653873›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2011

Single K ATP channel opening in response to action potential firing in mouse dentate granule neurons.

Geoffrey R Tanner, Andrew Lutas, Juan Ramón Martínez-François, Gary Yellen

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed
4.0field-weighted citation impact, top 5% 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

90 citing papers in PubMed, 154 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
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  16. The role ofFrontiers in cellular neuroscience · 2023
    Review
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  18. Mitochondrial CaCommunications biology · 2022
    Article
  19. Article
  20. Review

30 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 1 institution in 1 country.

Geoffrey R TannerDepartment of Neurobiology, Harvard Medical School, Boston, Massachusetts 02115, USA.
Andrew Lutas
Juan Ramón Martínez-François
Gary Yellen
Harvard University · US

Funding

HARVARD CLINICAL AND TRANSLATIONAL SCIENCE CENTER (UL1)UL1RR025758 · NCRR · HARVARD MEDICAL SCHOOL · PI NADLER, LEE MARSHALL · 2008 to 2011
$91.4M
Cellular mechanisms of dietary therapy for epilepsyR01NS055031 · NINDS · HARVARD MEDICAL SCHOOL · PI YELLEN, GARY I · 2008 to 2016
$3.2M
MOLECULAR PHYSIOLOGY OF POTASSIUM CHANNELSR01NS029693 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI YELLEN, GARY I · 1991 to 2006
$2.9M
NCRR NIH HHS RR025758NCRR NIH HHS UL1 RR025758NINDS NIH HHS NS029693NINDS NIH HHS NS055031NINDS NIH HHS R01 NS029693NINDS NIH HHS R01 NS055031
6 · The paper itself

Abstract

ATP-sensitive potassium channels (K(ATP) channels) are important sensors of cellular metabolic state that link metabolism and excitability in neuroendocrine cells, but their role in nonglucosensing central neurons is less well understood. To examine a possible role for K(ATP) channels in modulating excitability in hippocampal circuits, we recorded the activity of single K(ATP) channels in cell-attached patches of granule cells in the mouse dentate gyrus during bursts of action potentials generated by antidromic stimulation of the mossy fibers. Ensemble averages of the open probability (p(open)) of single K(ATP) channels over repeated trials of stimulated spike activity showed a transient increase in p(open) in response to action potential firing. Channel currents were identified as K(ATP) channels through blockade with glibenclamide and by comparison with recordings from Kir6.2 knock-out mice. The transient elevation in K(ATP) p(open) may arise from submembrane ATP depletion by the Na(+)-K(+) ATPase, as the pump blocker strophanthidin reduced the magnitude of the elevation. Both the steady-state and stimulus-elevated p(open) of the recorded channels were higher in the presence of the ketone body R-β-hydroxybutyrate, consistent with earlier findings that ketone bodies can affect K(ATP) activity. Using perforated-patch recording, we also found that K(ATP) channels contribute to the slow afterhyperpolarization following an evoked burst of action potentials. We propose that activity-dependent opening of K(ATP) channels may help granule cells act as a seizure gate in the hippocampus and that ketone-body-mediated augmentation of the activity-dependent opening could in part explain the effect of the ketogenic diet in reducing epileptic seizures.

Indexed as

Action PotentialsAnimalsDentate GyrusElectrophysiologyIon Channel GatingKATP ChannelsMembrane PotentialsMiceNeuronsKATP Channels

Identifiers

PMID21653873
PMCPMC3133530
OpenAlexW2038804886

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.