• Neuroscience · Feb 2021

    Review

    Regulatory roles of metabotropic glutamate receptors on synaptic communication mediated by gap junctions.

    • Roger Cachope and Alberto E Pereda.
    • CHDI Foundation, USA; Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA.
    • Neuroscience. 2021 Feb 21; 456: 85-94.

    AbstractVariations of synaptic strength are thought to underlie forms of learning and can functionally reshape neural circuits. Metabotropic glutamate receptors play key roles in regulating the strength of chemical synapses. However, information within neural circuits is also conveyed via a second modality of transmission: gap junction-mediated synapses. We review here evidence indicating that metabotropic glutamate receptors also play important roles in the regulation of synaptic communication mediated by neuronal gap junctions, also known as 'electrical synapses'. Activity-driven interactions between metabotropic glutamate receptors and neuronal gap junctions can lead to long-term changes in the strength of electrical synapses. Further, the regulatory action of metabotropic glutamate receptors on neuronal gap junctions is not restricted to adulthood but is also of critical relevance during brain development and contributes to the pathological mechanisms that follow brain injury.Copyright © 2020 IBRO. Published by Elsevier Ltd. All rights reserved.

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