Neuropeptide distribution in the stellate ganglia of the domestic animal.
We used immunohistochemical techniques to analyze the localization and distribution of the catecholamine-synthesizing enzyme tyrosine hydroxylase (TH) and the neuropeptides methionine-endephalin (M-Enk), neuropeptide Y (NPY), vasoactive intestinal polypeptide (VIP), calretinin (Cal), calcitonin gene-related peptide (CGRP), substance P (SP), and galanin (Gal) in the stellate ganglia of two species of domestic animal (cattle and horses). NPY, VIP and Gal immunoreactive neurons (both cell body and nerve fiber) were observed in the stellate ganglia of both animals. M-Enk and CGRP immunoreactive nerve fibers were detected in the stellate ganglia of both animals, but positive cell bodies were found only in the stellate ganglia of the horse. In contrast, Cal- and SP-positive cell bodies existed in the stellate ganglia of cattle but not in the horse. SP-immunoreactive cells were observed only in young cattle. In both cattle and horses, almost all ganglion cell bodies exhibited TH immunoreactivity, but no positive nerve fibers were found.
Department of Veterinary Anatomy, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan.
Tetsuo
T
Nasu
Atsushi
A
Sueishi
Masatoshi
M
Morimoto
D000818:Animals; D000829:Animals, Domestic; D002417:Cattle; D006736:Horses; D009479:Neuropeptides / Q000378:metabolism*; D013233:Stellate Ganglion / Q000378:metabolism*; D014018:Tissue Distribution
D009479:Neuropeptides