Abstract
The concept of nonsynaptic communication between neurons, once a heretic idea, has become a self-evident fact during the almost forty years since its original discovery [1]. In this review we investigate whether the archetypical synaptic transmitters of the central nervous system, Glu and GABA, can operate via nonsynaptic transmission. While experimental data supporting the general concept of nonsynaptic transmission has been progressively accumulating during these years, most of the evidence regarding nonsynaptic transmission by Glu and GABA are results of the last decade. In this paper we collect evidence for different forms of nonsynaptic transmission by the Gluergic and GABAergic system. We investigate two theoretical predictions of the concept of nonsynaptic transmission in the light of recent progress in the field: i) since extrasynaptic receptors experience a lower concentration of agonist, they are likely to have higher affinity for the agonist ii) extrasynaptic receptors are expected to be more important pharmacological targets.
Keywords: Glu spillover, phasic and tonic GABA spillover, ambient Glu and GABA, concept of nonsynaptic transmission
Current Topics in Medicinal Chemistry
Title: Nonsynaptic Receptors for GABA and Glutamate
Volume: 6 Issue: 10
Author(s): E. S. Vizi and Arpad Mike
Affiliation:
Keywords: Glu spillover, phasic and tonic GABA spillover, ambient Glu and GABA, concept of nonsynaptic transmission
Abstract: The concept of nonsynaptic communication between neurons, once a heretic idea, has become a self-evident fact during the almost forty years since its original discovery [1]. In this review we investigate whether the archetypical synaptic transmitters of the central nervous system, Glu and GABA, can operate via nonsynaptic transmission. While experimental data supporting the general concept of nonsynaptic transmission has been progressively accumulating during these years, most of the evidence regarding nonsynaptic transmission by Glu and GABA are results of the last decade. In this paper we collect evidence for different forms of nonsynaptic transmission by the Gluergic and GABAergic system. We investigate two theoretical predictions of the concept of nonsynaptic transmission in the light of recent progress in the field: i) since extrasynaptic receptors experience a lower concentration of agonist, they are likely to have higher affinity for the agonist ii) extrasynaptic receptors are expected to be more important pharmacological targets.
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Cite this article as:
Vizi S. E. and Mike Arpad, Nonsynaptic Receptors for GABA and Glutamate, Current Topics in Medicinal Chemistry 2006; 6 (10) . https://dx.doi.org/10.2174/156802606777323782
DOI https://dx.doi.org/10.2174/156802606777323782 |
Print ISSN 1568-0266 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4294 |
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