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Co-expression of PACAP with VIP, SP and CGRP in the porcine nodose ganglion sensory neurons


, : Co-expression of PACAP with VIP, SP and CGRP in the porcine nodose ganglion sensory neurons. Anatomia, Histologia, Embryologia 44(2): 86-91

Our previous study revealed the expression of substance P (SP) and calcitonin gene-related peptide (CGRP) in sensory distal ganglion of the vagus (nodose ganglion) neurons in the pig. As these neuropeptides may be involved in nociception, the goal of these investigations was to determine possible expression of vasoactive intestinal polypeptide (VIP), SP and CGRP in the pituitary adenylate cyclase-activating polypeptide-immunoreactive (PACAP-IR) porcine nodose perikarya. Co-expression of these substances was examined using a double-labelling immunofluorescence technique. To reveal the ganglionic cell bodies, the pan-neuronal marker protein gene product 9.5 (PGP 9.5) was used. Quantitative analysis of the neurons revealed that 67.25% of the PGP 9.5+ somata in the right-side ganglion and 66.5% in the left side, respectively, co-expressed PACAP-IR. Moreover, 60.6% of the PACAP-IR cells in the right-side ganglion and 62.1% in the left, respectively, co-expressed VIP. SP-IR was observed in 52.2 and 39.9% of the right and left ganglia, respectively. CGRP was found in 27.7 and 34.1% of the right and left distal ganglion of the vagus, respectively. High level of co-expression of PACAP with VIP, SP and CGRP in the distal ganglia of the vagus sensory perikarya directly implicates studied peptides in their functional interaction during nociceptive vagal transduction.

US$19.90

PMID: 24713103

DOI: 10.1111/ahe.12111


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