Release, spread and persistence of immunoreactive neurokinin A in the dorsal horn of the cat following noxious cutaneous stimulation. Studies with antibody microprobes

In barbiturate anaesthetized spinal cats antibody microprobes were used to examine release of immunoreactive neurokinin A following cutaneous thermal and mechanical stimulation. In the absence of peripheral stimuli, microprobes detected a diffuse basal presence of immunoreactive neurokinin A. Noxiou...

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Veröffentlicht in:Neuroscience 1990, Vol.35 (1), p.195-202
Hauptverfasser: Duggan, A.W., Hope, P.J., Jarrott, B., Schaible, H.-G., Fleetwood-Walker, S.M.
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container_end_page 202
container_issue 1
container_start_page 195
container_title Neuroscience
container_volume 35
creator Duggan, A.W.
Hope, P.J.
Jarrott, B.
Schaible, H.-G.
Fleetwood-Walker, S.M.
description In barbiturate anaesthetized spinal cats antibody microprobes were used to examine release of immunoreactive neurokinin A following cutaneous thermal and mechanical stimulation. In the absence of peripheral stimuli, microprobes detected a diffuse basal presence of immunoreactive neurokinin A. Noxious mechanical and to a lesser extent noxious thermal stimuli increased the levels of immunoreactive neurokinin A diffusely throughout the dorsal horn which, in many cases, spread into the adjacent white matter. These diffuse stimulus-evoked increases contrast with previous experiments where the same stimuli produced discrete focal increases in levels of immunoreactive substance P. Evidence was obtained that released immunoreactive neurokinin A persisted in the spinal cord for at least 30 min beyond the period of stimulation. Neurokinin A needs consideration as the agent responsible for the long-lasting increases in excitability of some spinal neurons found by several laboratories to follow a brief input from unmyelinated primary afferents.
doi_str_mv 10.1016/0306-4522(90)90134-P
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Studies with antibody microprobes</title><title>Neuroscience</title><addtitle>Neuroscience</addtitle><description>In barbiturate anaesthetized spinal cats antibody microprobes were used to examine release of immunoreactive neurokinin A following cutaneous thermal and mechanical stimulation. In the absence of peripheral stimuli, microprobes detected a diffuse basal presence of immunoreactive neurokinin A. Noxious mechanical and to a lesser extent noxious thermal stimuli increased the levels of immunoreactive neurokinin A diffusely throughout the dorsal horn which, in many cases, spread into the adjacent white matter. These diffuse stimulus-evoked increases contrast with previous experiments where the same stimuli produced discrete focal increases in levels of immunoreactive substance P. Evidence was obtained that released immunoreactive neurokinin A persisted in the spinal cord for at least 30 min beyond the period of stimulation. Neurokinin A needs consideration as the agent responsible for the long-lasting increases in excitability of some spinal neurons found by several laboratories to follow a brief input from unmyelinated primary afferents.</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Cats</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Immunohistochemistry</subject><subject>immunoreactive</subject><subject>neurokinin A</subject><subject>Neurokinin A - metabolism</subject><subject>NKA</subject><subject>Nociceptors - metabolism</subject><subject>Nociceptors - physiology</subject><subject>Pain - metabolism</subject><subject>PBS</subject><subject>phosphate-buffered saline</subject><subject>Skin - innervation</subject><subject>Somesthesis and somesthetic pathways (proprioception, exteroception, nociception); interoception; electrolocation. 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Psychology</topic><topic>Immunohistochemistry</topic><topic>immunoreactive</topic><topic>neurokinin A</topic><topic>Neurokinin A - metabolism</topic><topic>NKA</topic><topic>Nociceptors - metabolism</topic><topic>Nociceptors - physiology</topic><topic>Pain - metabolism</topic><topic>PBS</topic><topic>phosphate-buffered saline</topic><topic>Skin - innervation</topic><topic>Somesthesis and somesthetic pathways (proprioception, exteroception, nociception); interoception; electrolocation. 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source MEDLINE; Elsevier ScienceDirect Journals
subjects Animals
Biological and medical sciences
Cats
Fundamental and applied biological sciences. Psychology
Immunohistochemistry
immunoreactive
neurokinin A
Neurokinin A - metabolism
NKA
Nociceptors - metabolism
Nociceptors - physiology
Pain - metabolism
PBS
phosphate-buffered saline
Skin - innervation
Somesthesis and somesthetic pathways (proprioception, exteroception, nociception)
interoception
electrolocation. Sensory receptors
Spinal Cord - metabolism
Spinal Cord - physiopathology
substance P
Vertebrates: nervous system and sense organs
title Release, spread and persistence of immunoreactive neurokinin A in the dorsal horn of the cat following noxious cutaneous stimulation. Studies with antibody microprobes
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