Evidence map›Paper›PMID 21957311›Full record

ArticleJournal of virology2011

Glutamate excitotoxicity is involved in the induction of paralysis in mice after infection by a human coronavirus with a single point mutation in its spike protein.

Elodie Brison, Hélène Jacomy, Marc Desforges, Pierre J Talbot

Abstract read
In one paragraph

Article in Journal of virology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 20% 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

47 citing papers in PubMed, 1 synthesis or guideline pooled it, 70 citations in OpenAlex.

  1. Pooled it
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  11. A suitable model to investigate acute neurological consequences of coronavirus infection.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2023
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  15. Outcomes of RIP Kinase Signaling During Neuroinvasive Viral Infection.Current topics in microbiology and immunology · 2023
    Review
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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.

Elodie BrisonLaboratory of Neuroimmunovirology, INRS-Institut Armand Frappier, 513 boulevard des Prairies, Laval, Québec, Canada H7V 1B7.
Hélène Jacomy
Marc Desforges
Pierre J Talbot
Institut National de la Recherche Scientifique · CA

Funding

Canadian Institutes of Health Research MT-9203
6 · The paper itself

Abstract

Human coronaviruses (HCoV) are recognized respiratory pathogens, and some strains, including HCoV-OC43, can infect human neuronal and glial cells of the central nervous system (CNS) and activate neuroinflammatory mechanisms. Moreover, HCoV-OC43 is neuroinvasive, neurotropic, and neurovirulent in susceptible mice, where it induces chronic encephalitis. Herein, we show that a single point mutation in the viral spike (S) glycoprotein (Y241H), acquired during viral persistence in human neural cells, led to a hind-limb paralytic disease in infected mice. Inhibition of glutamate excitotoxicity using a 2-amino-3-(5-methyl-3-oxo-1,2-oxazol-4-yl)propranoic acid (AMPA) receptor antagonist (GYKI-52466) improved clinical scores related to the paralysis and motor disabilities in S mutant virus-infected mice, as well as protected the CNS from neuronal dysfunctions, as illustrated by restoration of the phosphorylation state of neurofilaments. Expression of the glial glutamate transporter GLT-1, responsible for glutamate homeostasis, was downregulated following infection, and GYKI-52466 also significantly restored its steady-state expression level. Finally, GYKI-52466 treatment of S mutant virus-infected mice led to reduced microglial activation, which may lead to improvement in the regulation of CNS glutamate homeostasis. Taken together, our results strongly suggest an involvement of excitotoxicity in the paralysis-associated neuropathology induced by an HCoV-OC43 mutant which harbors a single point mutation in its spike protein that is acquired upon persistent virus infection.

Indexed as

AnimalsBenzodiazepinesBlotting, WesternCoronavirus InfectionsCoronavirus OC43, HumanExcitatory Amino Acid AntagonistsFemaleGlutamic AcidHumansImmunoenzyme TechniquesMembrane GlycoproteinsMiceMice, Inbred BALB CNeurogliaNeuronsParalysisBenzodiazepinesExcitatory Amino Acid AntagonistsGlutamic AcidGYKI 52466Membrane GlycoproteinsReceptors, AMPASpike Glycoprotein, CoronavirusViral Envelope Proteins

Identifiers

PMID21957311
PMCPMC3209392
OpenAlexW2101316860

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.