Evidence map›Paper›PMID 32366857›Full record

ArticleScientific reports2020

Increased O-GlcNAcylation rapidly decreases GABA

L T Stewart, K Abiraman, J C Chatham, L L McMahon

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 31% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

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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.

L T Stewart *Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
K Abiraman *Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
J C ChathamDepartment of Pathology, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
L L McMahonDepartment of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, 35294, USA. mcmahon@uab.edu.
University of Alabama at Birmingham · US

Funding

O-GlcNAcylation and Hippocampal Synaptic PlasticityR01NS076312 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI CHATHAM, JOHN C, MCMAHON, LORI LYNN · 2011 to 2015
$1.6M
Rapid modulation of hippocampal GABAergic Inhibition by O-GlcNAcylationR21NS111945 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI CHATHAM, JOHN C, MCMAHON, LORI LYNN · 2019 to 2019
$408k
O-GlcNAcylation dampens hyper-excitability in hippocampus during acute epileptiform activityF31NS095568 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI STEWART, LUKE THOMAS · 2015 to 2016
$68k
NINDS NIH HHS F31 NS095568NINDS NIH HHS R01 NS076312NINDS NIH HHS R21 NS111945
6 · The paper itself

Abstract

O-GlcNAcylation, a post-translational modification involving O-linkage of β-N-acetylglucosamine to Ser/Thr residues on target proteins, is increasingly recognized as a critical regulator of synaptic function. Enzymes that catalyze O-GlcNAcylation are found at both presynaptic and postsynaptic sites, and O-GlcNAcylated proteins localize to synaptosomes. An acute increase in O-GlcNAcylation can affect neuronal communication by inducing long-term depression (LTD) of excitatory transmission at hippocampal CA3-CA1 synapses, as well as suppressing hyperexcitable circuits in vitro and in vivo. Despite these findings, to date, no studies have directly examined how O-GlcNAcylation modulates the efficacy of inhibitory neurotransmission. Here we show an acute increase in O-GlcNAc dampens GABAergic currents onto principal cells in rodent hippocampus likely through a postsynaptic mechanism, and has a variable effect on the excitation/inhibition balance. The overall effect of increased O-GlcNAc is reduced synaptically-driven spike probability via synaptic depression and decreased intrinsic excitability. Our results position O-GlcNAcylation as a novel regulator of the overall excitation/inhibition balance and neuronal output.

Indexed as

Neuronal PlasticityProtein Processing, Post-TranslationalSynaptic TransmissionAnimalsCA1 Region, HippocampalCA3 Region, HippocampalFemaleGlycosylationMaleRatsRats, Sprague-DawleyReceptors, GABA-ASynapsesReceptors, GABA-A

Identifiers

PMID32366857
PMCPMC7198489
OpenAlexW3022427204

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.