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EXPERIMENTAL NEUROLOGY 90, 2i 5-223 (1985) Sources of the Catecholaminergic Innervation of the
 

Summary: EXPERIMENTAL NEUROLOGY 90, 2i 5-223 (1985)
Sources of the Catecholaminergic Innervation of the
Trigeminal Nucleus Caudalis in Cat
RICHARD T. STEVENS, A. VANIA APKARIAN,
AND CHARLES J. HODGE, JR.'
Department of Neurosurgery, Upstate Medical Center, Syracuse, New York 13210
Received April 8, 1985; revision received June IO. I985
Injections of the retrogradely transported fluorescent dye, Evans blue, into the
trigeminal nucleus caudalis were combined with the glyoxylic acid histofluorescence
technique to determine the sourcesof catecholamine-containing varicosities innervating
nucleus caudalis. Results indicate that the sources of this catecholamine innervation
are widespread, originating from cell bodies throughout the brain stem including the
medullary catecholamine cell groups as well as the noradrenergic nuclei of the
dorsolateral pons, including locus ceruleus, subceruleus, Kdlliker-Fuse, and the
parabrachial nuclei. A small projection from the presumably dopaminergic neurons
of the hypothalamus was also noted. The catecholamine innervation of n. caudalis
in the cat is from widespread brain stem sources, a pattern different from the
catecholamine innervation of the spinal cord, which receivesits major catecholamine
input from the Kolliker-Fuse nucleus. 0 1985 Academic PISS, IIIC.
INTRODUCTION

  

Source: Apkarian, A. Vania - Department of Physiology, Northwestern University

 

Collections: Biology and Medicine