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Efferent projections of the subthalamic nucleus in the rat: Light and electron microscopic analysis with the PHA‐L method

Efferent projections of the subthalamic nucleus in the rat: Light and electron microscopic... Efferent projections of rat subthalamic nucleus were studied by use of the axonal transport of phaseolus vulgaris‐leucoagglutinin (PHA‐L), and the results were analyzed with light and electron microscopes. PHA‐L injections in the subthalamic nucleus (STH) resulted in heavy labeling of fiber plexus with en passant boutons and terminals in the pallidal complex, i.e., the entopeduncular nucleus (EP), the globus pallidus (GP) and the ventral pallidum (VP), and the substantia nigra pars reticulata (SNR). Labeling in GP was characterized by two distinct bands of labeled terminals oriented dorsoventrally, whereas labeling in SNR was patchy. STH efferents to the pallidum and SNR, displayed a mediolateral topographic organization. With regard to dorsoventral organization, projections to GP were inverted, but those to SNR were not. There were moderate projections to the neostriatum and sparse projections to the frontal cortex, substantia innominata, substantia nigra pars compacta (SNC), pedunculopontine tegmental nucleus, ventral part of the central gray matter including the dorsal raphe nucleus, and the mesencephalic and pontine reticular formation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Comparative Neurology Wiley

Efferent projections of the subthalamic nucleus in the rat: Light and electron microscopic analysis with the PHA‐L method

The Journal of Comparative Neurology , Volume 260 (3) – Mar 15, 1988

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References (98)

Publisher
Wiley
Copyright
"Copyright © 1987 Wiley Subscription Services, Inc., A Wiley Company"
ISSN
0021-9967
eISSN
1096-9861
DOI
10.1002/cne.902600309
pmid
2439552
Publisher site
See Article on Publisher Site

Abstract

Efferent projections of rat subthalamic nucleus were studied by use of the axonal transport of phaseolus vulgaris‐leucoagglutinin (PHA‐L), and the results were analyzed with light and electron microscopes. PHA‐L injections in the subthalamic nucleus (STH) resulted in heavy labeling of fiber plexus with en passant boutons and terminals in the pallidal complex, i.e., the entopeduncular nucleus (EP), the globus pallidus (GP) and the ventral pallidum (VP), and the substantia nigra pars reticulata (SNR). Labeling in GP was characterized by two distinct bands of labeled terminals oriented dorsoventrally, whereas labeling in SNR was patchy. STH efferents to the pallidum and SNR, displayed a mediolateral topographic organization. With regard to dorsoventral organization, projections to GP were inverted, but those to SNR were not. There were moderate projections to the neostriatum and sparse projections to the frontal cortex, substantia innominata, substantia nigra pars compacta (SNC), pedunculopontine tegmental nucleus, ventral part of the central gray matter including the dorsal raphe nucleus, and the mesencephalic and pontine reticular formation.

Journal

The Journal of Comparative NeurologyWiley

Published: Mar 15, 1988

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