Early history of glycine receptor biology in mammalian spinal cord circuits

In this review we provide an overview of key in vivo experiments, undertaken in the cat spinal cord in the 1950s and 1960s, and point out their contributions to our present understanding of glycine receptor (GlyR) function. Importantly, some of these discoveries were made well before an inhibitory r...

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Main Authors: Robert J Callister, Brett A Graham
Format: Article
Language:English
Published: Frontiers Media S.A. 2010-05-01
Series:Frontiers in Molecular Neuroscience
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fnmol.2010.00013/full
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author Robert J Callister
Brett A Graham
author_facet Robert J Callister
Brett A Graham
author_sort Robert J Callister
collection DOAJ
description In this review we provide an overview of key in vivo experiments, undertaken in the cat spinal cord in the 1950s and 1960s, and point out their contributions to our present understanding of glycine receptor (GlyR) function. Importantly, some of these discoveries were made well before an inhibitory receptor, or its agonist, was identified. These contributions include the universal acceptance of a chemical mode of synaptic transmission, that GlyRs are chloride channels, are involved in reciprocal and recurrent spinal inhibition, are selectively blocked by strychnine, and can be distinguished from the GABAA receptor by their insensitivity to bicuculline. The early in vivo work on inhibitory mechanisms in spinal neurons also contributed to several enduring principles on synaptic function, such as the time associated with synaptic delay, the extension of Dale’s hypothesis (regarding the chemical unity of nerve cells and their terminals) to neurons within the central nervous system, and the importance of inhibition for synaptic integration in motor and sensory circuits. We hope the work presented here will encourage those interested in GlyR biology and inhibitory mechanisms to seek out and read some of the “classic” articles that document the above discoveries.
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spelling doaj.art-0154d4e202194aa9aa726fa4650f1d4e2022-12-22T03:09:27ZengFrontiers Media S.A.Frontiers in Molecular Neuroscience1662-50992010-05-01310.3389/fnmol.2010.000131289Early history of glycine receptor biology in mammalian spinal cord circuitsRobert J Callister0Brett A Graham1The University of Newcastle and Hunter Medical Research InstituteThe University of Newcastle and Hunter Medical Research InstituteIn this review we provide an overview of key in vivo experiments, undertaken in the cat spinal cord in the 1950s and 1960s, and point out their contributions to our present understanding of glycine receptor (GlyR) function. Importantly, some of these discoveries were made well before an inhibitory receptor, or its agonist, was identified. These contributions include the universal acceptance of a chemical mode of synaptic transmission, that GlyRs are chloride channels, are involved in reciprocal and recurrent spinal inhibition, are selectively blocked by strychnine, and can be distinguished from the GABAA receptor by their insensitivity to bicuculline. The early in vivo work on inhibitory mechanisms in spinal neurons also contributed to several enduring principles on synaptic function, such as the time associated with synaptic delay, the extension of Dale’s hypothesis (regarding the chemical unity of nerve cells and their terminals) to neurons within the central nervous system, and the importance of inhibition for synaptic integration in motor and sensory circuits. We hope the work presented here will encourage those interested in GlyR biology and inhibitory mechanisms to seek out and read some of the “classic” articles that document the above discoveries.http://journal.frontiersin.org/Journal/10.3389/fnmol.2010.00013/fullBicucullineStrychnineSynaptic Transmissioninhibitionmotoneuronchloride channel
spellingShingle Robert J Callister
Brett A Graham
Early history of glycine receptor biology in mammalian spinal cord circuits
Frontiers in Molecular Neuroscience
Bicuculline
Strychnine
Synaptic Transmission
inhibition
motoneuron
chloride channel
title Early history of glycine receptor biology in mammalian spinal cord circuits
title_full Early history of glycine receptor biology in mammalian spinal cord circuits
title_fullStr Early history of glycine receptor biology in mammalian spinal cord circuits
title_full_unstemmed Early history of glycine receptor biology in mammalian spinal cord circuits
title_short Early history of glycine receptor biology in mammalian spinal cord circuits
title_sort early history of glycine receptor biology in mammalian spinal cord circuits
topic Bicuculline
Strychnine
Synaptic Transmission
inhibition
motoneuron
chloride channel
url http://journal.frontiersin.org/Journal/10.3389/fnmol.2010.00013/full
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