Abstract
Nociceptive primary afferents release glutamate, activating postsynaptic glutamate receptors on spinal cord dorsal horn neurons. Glutamate receptors, both ionotropic and metabotropic, are also expressed on presynaptic terminals, where they regulate neurotransmitter release. During the last two decades, a wide number of studies have characterized the properties of presynaptic glutamatergic receptors, particularly those expressed on primary afferent fibers. This review describes the subunit composition, distribution and function of presynaptic glutamate ionotropic (AMPA, NMDA, kainate) and metabotropic receptors expressed in rodent spinal cord dorsal horn. The role of presynaptic receptors in modulating nociceptive information in experimental models of acute and chronic pain will be also discussed.
Keywords: Spinal cord, pain, glutamate, presynaptic modulation, primary afferent fiber, primary afferent depolarization.
Current Neuropharmacology
Title:Role of Presynaptic Glutamate Receptors in Pain Transmission at the Spinal Cord Level
Volume: 11 Issue: 5
Author(s): Rita Bardoni
Affiliation:
Keywords: Spinal cord, pain, glutamate, presynaptic modulation, primary afferent fiber, primary afferent depolarization.
Abstract: Nociceptive primary afferents release glutamate, activating postsynaptic glutamate receptors on spinal cord dorsal horn neurons. Glutamate receptors, both ionotropic and metabotropic, are also expressed on presynaptic terminals, where they regulate neurotransmitter release. During the last two decades, a wide number of studies have characterized the properties of presynaptic glutamatergic receptors, particularly those expressed on primary afferent fibers. This review describes the subunit composition, distribution and function of presynaptic glutamate ionotropic (AMPA, NMDA, kainate) and metabotropic receptors expressed in rodent spinal cord dorsal horn. The role of presynaptic receptors in modulating nociceptive information in experimental models of acute and chronic pain will be also discussed.
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Cite this article as:
Bardoni Rita, Role of Presynaptic Glutamate Receptors in Pain Transmission at the Spinal Cord Level, Current Neuropharmacology 2013; 11 (5) . https://dx.doi.org/10.2174/1570159X11311050002
DOI https://dx.doi.org/10.2174/1570159X11311050002 |
Print ISSN 1570-159X |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6190 |
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