Tyrosine hydroxylase-like immunoreactive synaptic boutons in the inferior colliculus of the cat

Citation
Am. Paloff et Kg. Usunoff, Tyrosine hydroxylase-like immunoreactive synaptic boutons in the inferior colliculus of the cat, ANN ANATOMY, 182(5), 2000, pp. 423-426
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Experimental Biology
Journal title
ANNALS OF ANATOMY-ANATOMISCHER ANZEIGER
ISSN journal
0940-9602 → ACNP
Volume
182
Issue
5
Year of publication
2000
Pages
423 - 426
Database
ISI
SICI code
0940-9602(200009)182:5<423:THISBI>2.0.ZU;2-2
Abstract
The data on the distribution of catecholaminergic cells and fibers in such a significant subcortical relay auditory center as the inferior colliculus (IC) are both few and controversial, and ultrastructural data are lacking. Young adult mongrel cats of both sexes were used. Following routine prepara tion procedures, the ultrathin sections were prepared for the ultrastructur al examination of tyrosine hydroxylase (TH)-like immunoreactivity. TH-posit ive neuronal perikarya were not detected in the IC. On the other hand, an a ppreciable number of TH-immunoreactive unmyelinated axons and synaptic bout ons were found in all subdivisions of the IC, most often in the nucleus ext ernus, followed by the nucleus pericentralis, and a few were seen in the do rsomedial part of the central nucleus. The boutons measured 0.5-1.8 mu m, c ontained pleomorphic synaptic vesicles, and established symmetrical synapti c contacts almost exclusively with dendrites of small caliber.