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Glial Cell AMPA Receptors in Nervous System Health, Injury and Disease

1
Instituto de Investigación Sanitaria San Carlos (IdISSC), 28040 Madrid, Spain
2
Departamento de Bioquímica y Biología Molecular, CIBERNED, IRICYS. Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
3
Neuroscience and Ophthalmology Research Group, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2019, 20(10), 2450; https://doi.org/10.3390/ijms20102450
Received: 12 March 2019 / Revised: 11 April 2019 / Accepted: 22 April 2019 / Published: 17 May 2019
(This article belongs to the Special Issue Glutamate Receptors in Health and Disease)
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Abstract

Glia form a central component of the nervous system whose varied activities sustain an environment that is optimised for healthy development and neuronal function. Alpha-amino-3-hydroxy-5-methyl-4-isoxazole (AMPA)-type glutamate receptors (AMPAR) are a central mediator of glutamatergic excitatory synaptic transmission, yet they are also expressed in a wide range of glial cells where they influence a variety of important cellular functions. AMPAR enable glial cells to sense the activity of neighbouring axons and synapses, and as such many aspects of glial cell development and function are influenced by the activity of neural circuits. However, these AMPAR also render glia sensitive to elevations of the extracellular concentration of glutamate, which are associated with a broad range of pathological conditions. Excessive activation of AMPAR under these conditions may induce excitotoxic injury in glial cells, and trigger pathophysiological responses threatening other neural cells and amplifying ongoing disease processes. The aim of this review is to gather information on AMPAR function from across the broad diversity of glial cells, identify their contribution to pathophysiological processes, and highlight new areas of research whose progress may increase our understanding of nervous system dysfunction and disease. View Full-Text
Keywords: glia; AMPA receptor; astrocyte; microglia; glutamate; excitotoxicity; inflammation; hypoxia; ischemia; multiple sclerosis; neurodegeneration glia; AMPA receptor; astrocyte; microglia; glutamate; excitotoxicity; inflammation; hypoxia; ischemia; multiple sclerosis; neurodegeneration
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Ceprian, M.; Fulton, D. Glial Cell AMPA Receptors in Nervous System Health, Injury and Disease. Int. J. Mol. Sci. 2019, 20, 2450.

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