Results 41 to 50 of about 1,542 (158)

Stargazin controls the pharmacology of AMPA receptor potentiators [PDF]

open access: yesProceedings of the National Academy of Sciences, 2006
Glutamate is the major excitatory neurotransmitter in brain, and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA)-type glutamate receptors (AMPARs) mediate the majority of postsynaptic depolarization. AMPAR ion channels display rapid gating, and their deactivation and desensitization determine the timing of synaptic transmission.
Susumu, Tomita   +4 more
openaire   +2 more sources

Functional genomic analyses highlight a shift in Gpr17‐regulated cellular processes in oligodendrocyte progenitor cells and underlying myelin dysregulation in the aged mouse cerebrum

open access: yesAging Cell, Volume 20, Issue 4, April 2021., 2021
Ageing reduces the number of OPCs and their ‘stemness’. Genomic analysis resolved key mechanisms underpinning the age related decline in OPCs, most notably reduced expression of Gpr17 in a subpopulation of differentiation committed OPCs. Pharmacogenomics identified small molecules that have the potential to rejuvenate OPCs and promote myelination and ...
Andrea D. Rivera   +6 more
wiley   +1 more source

The Impact of Glutamatergic Synapse Dysfunction in the Corticothalamocortical Network on Absence Seizure Generation

open access: yesFrontiers in Molecular Neuroscience, 2022
Childhood absence epilepsy (CAE) is the most common pediatric epilepsy affecting 10–18% of all children with epilepsy. It is genetic in origin and the result of dysfunction within the corticothalamocortical (CTC) circuitry.
Beulah Leitch
doaj   +1 more source

mRNA Trafficking in the Nervous System: A Key Mechanism of the Involvement of Activity‐Regulated Cytoskeleton‐Associated Protein (Arc) in Synaptic Plasticity

open access: yesNeural Plasticity, Volume 2021, Issue 1, 2021., 2021
Synaptic activity mediates information storage and memory consolidation in the brain and requires a fast de novo synthesis of mRNAs in the nucleus and proteins in synapses. Intracellular localization of a protein can be achieved by mRNA trafficking and localized translation. Activity‐regulated cytoskeleton‐associated protein (Arc) is a master regulator
Michal Fila   +5 more
wiley   +1 more source

Screening for AMPA receptor auxiliary subunit specific modulators. [PDF]

open access: yesPLoS ONE, 2017
AMPA receptors (AMPAR) are ligand gated ion channels critical for synaptic transmission and plasticity. Their dysfunction is implicated in a variety of psychiatric and neurological diseases ranging from major depressive disorder to amyotrophic lateral ...
Caleigh M Azumaya   +6 more
doaj   +1 more source

Regulation of the Stability and Localization of Post-synaptic Membrane Proteins by Liquid-Liquid Phase Separation

open access: yesFrontiers in Physiology, 2021
Synaptic plasticity is a cellular mechanism of learning and memory. The synaptic strength can be persistently upregulated or downregulated to update the information sent to the neuronal network and form a memory engram.
Tomohisa Hosokawa, Pin-Wu Liu
doaj   +1 more source

Expression and Interaction Proteomics of GluA1- and GluA3-Subunit-Containing AMPARs Reveal Distinct Protein Composition

open access: yesCells, 2022
The AMPA glutamate receptor (AMPAR) is the major type of synaptic excitatory ionotropic receptor in the brain. AMPARs have four different subunits, GluA1–4 (each encoded by different genes, Gria1, Gria2, Gria3 and Gria4), that can form distinct ...
Sophie J. F. van der Spek   +7 more
doaj   +1 more source

Synaptic Changes in AMPA Receptor Subunit Expression in Cortical Parvalbumin Interneurons in the Stargazer Model of Absence Epilepsy

open access: yesFrontiers in Molecular Neuroscience, 2017
Feedforward inhibition is essential to prevent run away excitation within the brain. Recent evidence suggests that a loss of feed-forward inhibition in the corticothalamocortical circuitry may underlie some absence seizures.
Nadia K. Adotevi, Beulah Leitch
doaj   +1 more source

Auxiliary subunits keep AMPA receptors compact during activation and desensitization

open access: yeseLife, 2018
Signal transduction at vertebrate excitatory synapses involves the rapid activation of AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazole propionate) receptors, glutamate-gated ion channels whose four subunits assemble as a dimer-of-dimers.
Jelena Baranovic, Andrew JR Plested
doaj   +1 more source

Paradoxical proepileptic response to NMDA receptor blockade linked to cortical interneuron defect in stargazer mice

open access: yesFrontiers in Cellular Neuroscience, 2013
Paradoxical seizure exacerbation by antiepileptic medication is a well-known clinical phenomenon in epilepsy, but the cellular mechanisms remain unclear.
Atul eMaheshwari   +2 more
doaj   +1 more source

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