Evidence map›Paper›PMID 26177896›Full record

ArticleNature communications2015

GABA depolarizes immature neurons and inhibits network activity in the neonatal neocortex in vivo.

Knut Kirmse, Michael Kummer, Yury Kovalchuk, Otto W Witte, Olga Garaschuk, Knut Holthoff

Open access · goldAbstract read
PubMed Publisher
In one paragraph

Article in Nature communications, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 125 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
125citing papers in PubMed, 1 pooled it
9.4field-weighted citation impact, top 1% 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

125 citing papers in PubMed, 1 synthesis or guideline pooled it, 231 citations in OpenAlex.

  1. Pooled it
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  16. Network state transitions during cortical development.Nature reviews. Neuroscience · 2024
    Review
  17. Article
  18. Article
  19. Article
  20. Optogenetic Determination of Dynamic and Cell-Type-Specific Inhibitory Reversal Potentials.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article

65 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

6 authors at 2 institutions in 1 country.

Knut KirmseHans-Berger Department of Neurology, University Hospital Jena, D-07747 Jena, Germany.
Michael KummerHans-Berger Department of Neurology, University Hospital Jena, D-07747 Jena, Germany.
Yury KovalchukInstitute of Physiology II, Eberhard-Karls University Tübingen, D-72074 Tübingen, Germany.
Otto W WitteHans-Berger Department of Neurology, University Hospital Jena, D-07747 Jena, Germany.
Olga GaraschukInstitute of Physiology II, Eberhard-Karls University Tübingen, D-72074 Tübingen, Germany.
Knut HolthoffHans-Berger Department of Neurology, University Hospital Jena, D-07747 Jena, Germany.
Jena University Hospital · DEUniversity of Tübingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A large body of evidence from in vitro studies suggests that GABA is depolarizing during early postnatal development. However, the mode of GABA action in the intact developing brain is unknown. Here we examine the in vivo effects of GABA in cells of the upper cortical plate using a combination of electrophysiological and Ca(2+)-imaging techniques. We report that at postnatal days (P) 3-4, GABA depolarizes the majority of immature neurons in the occipital cortex of anaesthetized mice. At the same time, GABA does not efficiently activate voltage-gated Ca(2+) channels and fails to induce action potential firing. Blocking GABA(A) receptors disinhibits spontaneous network activity, whereas allosteric activation of GABA(A) receptors has the opposite effect. In summary, our data provide evidence that in vivo GABA acts as a depolarizing neurotransmitter imposing an inhibitory control on network activity in the neonatal (P3-4) neocortex.

Indexed as

Action PotentialsAnimalsAnimals, NewbornGABA Agentsgamma-Aminobutyric AcidMiceNeocortexNerve NetNeural InhibitionNeuronsOccipital LobePatch-Clamp TechniquesReceptors, GABA-ASynaptic TransmissionGABA Agentsgamma-Aminobutyric AcidReceptors, GABA-A

Identifiers

PMID26177896
OpenAlexW2254149533

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.