Evidence map›Paper›PMID 27959333›Full record

Trial reportTranslational psychiatry2016

A single high dose of dexamethasone affects the phosphorylation state of glutamate AMPA receptors in the human limbic system.

M W Lopes, R B Leal, R Guarnieri, M L Schwarzbold, A Hoeller, A P Diaz, G L Boos, K Lin, M N Linhares, J C Nunes and 5 more

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Translational psychiatry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

12 citing papers in PubMed, 25 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

15 authors at 6 institutions in 4 countries.

M W LopesDepartment of Biochemistry, Federal University of Santa Catarina, Floranópolis, Brazil.
R B LealDepartment of Biochemistry, Federal University of Santa Catarina, Floranópolis, Brazil.
R GuarnieriCenter for Applied Neuroscience, Hospital Universitário, Federal University of Santa Catarina, Florianópolis, Brazil.
M L SchwarzboldCenter for Applied Neuroscience, Hospital Universitário, Federal University of Santa Catarina, Florianópolis, Brazil.
A HoellerDepartment of Biochemistry, Federal University of Santa Catarina, Floranópolis, Brazil.
A P DiazCenter for Applied Neuroscience, Hospital Universitário, Federal University of Santa Catarina, Florianópolis, Brazil.
G L BoosAnesthesiology Division, Hospital Governador Celso Ramos, Florianópolis, Brazil.
K LinCenter for Applied Neuroscience, Hospital Universitário, Federal University of Santa Catarina, Florianópolis, Brazil.
M N LinharesCenter for Applied Neuroscience, Hospital Universitário, Federal University of Santa Catarina, Florianópolis, Brazil.
J C NunesPathology Division, HU, Federal University of Santa Catarina, Florianópolis, Brazil.
J QuevedoTranslational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA.
Z A BortolottoLaboratory of Neurosciences, Graduate Program in Health Sciences, University of Southern Santa Catarina, Criciúma, Brazil.
H J MarkowitschPhysiological Psychology, University of Bielefeld, Bielefeld, Germany.
S L LightmanCentre for Synaptic Plasticity, School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, UK.
R WalzCenter for Applied Neuroscience, Hospital Universitário, Federal University of Santa Catarina, Florianópolis, Brazil.
Universidade Federal de Santa Catarina · BRBielefeld University · DEGovernador Celso Ramos Hospital · BRThe University of Texas Health Science Center at Houston · USUniversidade do Sul de Santa Catarina · BRUniversity of Bristol · GB

Funding

Biotechnology and Biological Sciences Research CouncilMedical Research CouncilWellcome Trust
6 · The paper itself

Abstract

Glucocorticoids (GC) released during stress response exert feedforward effects in the whole brain, but particularly in the limbic circuits that modulates cognition, emotion and behavior. GC are the most commonly prescribed anti-inflammatory and immunosuppressant medication worldwide and pharmacological GC treatment has been paralleled by the high incidence of acute and chronic neuropsychiatric side effects, which reinforces the brain sensitivity for GC. Synapses can be bi-directionally modifiable via potentiation (long-term potentiation, LTP) or depotentiation (long-term depression, LTD) of synaptic transmission efficacy, and the phosphorylation state of Ser831 and Ser845 sites, in the GluA1 subunit of the glutamate AMPA receptors, are a critical event for these synaptic neuroplasticity events. Through a quasi-randomized controlled study, we show that a single high dexamethasone dose significantly reduces in a dose-dependent manner the levels of GluA1-Ser831 phosphorylation in the amygdala resected during surgery for temporal lobe epilepsy. This is the first report demonstrating GC effects on key markers of synaptic neuroplasticity in the human limbic system. The results contribute to understanding how GC affects the human brain under physiologic and pharmacologic conditions.

Indexed as

AdultAmygdalaAnti-Inflammatory AgentsDexamethasoneEpilepsy, Temporal LobeFemaleHippocampusHumansLimbic SystemMaleNeuronal PlasticityPhosphorylationReceptors, AMPASignal TransductionTemporal LobeAnti-Inflammatory AgentsDexamethasoneReceptors, AMPA

Identifiers

PMID27959333
PMCPMC5290343
OpenAlexW2561744811

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.