Laminar-related projection of primary trigeminal fibers in the caudal medulla demonstrated by transganglionic transport of horseradish peroxidase.

Autor: Shigenaga Y, Nishimori T, Suemune S, Chen YC, Nasution ID, Sato H, Okamoto T, Sera M, Tabuchi K, Kagawa K, et. al.
Jazyk: angličtina
Zdroj: Brain research [Brain Res] 1984 Sep 10; Vol. 309 (2), pp. 341-5.
DOI: 10.1016/0006-8993(84)90600-0
Abstrakt: The mode of termination of primary afferent fibers within the cat trigeminal nucleus caudalis was investigated by means of the transganglionic transport of horseradish peroxidase (HRP). Several types of laminar-related labeling were observed, depending upon the survival time after HRP application. At the earliest survival time (28-34 h) the highest density of labeling was found in laminae I and II. At 2 and 3 days survival laminae III and IV were heavily labeled, in addition to laminae I and II where the amount of labeling was greatly increased in lamina I, but not in lamina II. At 5 days survival time an abrupt drop of labeling occurred in laminae I and II, while this pattern was not predominant in laminae III and IV. In lamina V the pattern of labeling was less intense and not changeable through all survival times observed. These findings indicating a differentiation of the primary afferent terminals have good correspondence with a functional specialization of neuronal locations since the functional properties of neurons vary according to their locations.
Databáze: MEDLINE