Immunoreactive calcitonin gene-related peptide and substance P coexist in sensory neurons to the spinal cord and interact in spinal behavioral responses of the rat.

Z Wiesenfeld-Hallin,F.A Tschopp,J.A Fischer,W.G Forssmann,M Reinecke,T Hökfelt,J.M Lundberg

doi:10.1016/0304-3940(84)90374-4

Immunoreactive calcitonin gene-related peptide and substance P coexist in sensory neurons to the spinal cord and interact in spinal behavioral responses of the rat.

Z Wiesenfeld-Hallin, F.A Tschopp + Show 5 more

https://doi.org/10.1016/0304-3940(84)90374-4

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Journal: Neuroscience letters	Publication Date: Nov 1, 1984
Citations: 611

Affiliation: Integrated Cardio Metabolic Centre, Heidelberg University, University of Zurich, Karolinska Institutet

#Calcitonin Gene-related Peptide #Coexistence Of Calcitonin Gene-related Peptide + Show 8 more

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Abstract

Using immunohistochemistry evidence was obtained for the coexistence of calcitonin gene-related peptide (CGRP)- and substance P (SP)-like immunoreactivity in spinal sensory neurons. Analysis of caudally directed biting and scratching (CBS) behavior was carried out after intrathecal administration of CGRP and SP alone or in combination. Thus, SP (up to 20 micrograms) alone caused CBS only for a few minutes after injection, whereas SP (10 micrograms) plus CGRP (20 micrograms) caused a response with a duration up to 40 min. CGRP (20 micrograms) alone had no effects in this model. These findings provide support for a possible interaction of the two peptides at synapses in the dorsal horn of the spinal cord.

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