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Titolo:
AFFERENTS TO THE NUCLEUS-RETICULARIS PARVICELLULARIS OF THE CAT MEDULLA-OBLONGATA - A TRACT-TRACING STUDY WITH CHOLERA-TOXIN B-SUBUNIT
Autore:
FORT P; LUPPI PH; JOUVET M;
Indirizzi:
UNIV LYON 1,DEPT EXPTL MED,INSERM,U52,8 AVE ROCKEFELLER F-69373 LYON 08 FRANCE UNIV LYON 1,CNRS,URA 1195 F-69373 LYON 08 FRANCE
Titolo Testata:
Journal of comparative neurology
fascicolo: 4, volume: 342, anno: 1994,
pagine: 603 - 618
SICI:
0021-9967(1994)342:4<603:ATTNPO>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
ROSTRAL VENTROLATERAL MEDULLA; CENTRAL AMYGDALOID NUCLEUS; TRIGEMINAL MOTOR NUCLEUS; EDINGER-WESTPHAL NUCLEUS; BRAIN-STEM PROJECTIONS; SPINAL-CORD; HORSERADISH-PEROXIDASE; DESCENDING PROJECTIONS; CHOLINERGIC AFFERENTS; EFFERENT CONNECTIONS;
Keywords:
MUSCLE ATONIA; PARADOXICAL SLEEP; MONOAMINES; CHOLINE ACETYLTRANSFERASE; IMMUNOHISTOCHEMISTRY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
71
Recensione:
Indirizzi per estratti:
Citazione:
P. Fort et al., "AFFERENTS TO THE NUCLEUS-RETICULARIS PARVICELLULARIS OF THE CAT MEDULLA-OBLONGATA - A TRACT-TRACING STUDY WITH CHOLERA-TOXIN B-SUBUNIT", Journal of comparative neurology, 342(4), 1994, pp. 603-618

Abstract

The aim of this study was to examine anatomical evidence in cats of whether the nucleus reticularis parvicellularis (Pc) is part of the circuit responsiblefor the inhibition of brainstem motoneurons during paradoxical sleep. For this purpose, we made iontophoretic injections of the retrograde and anterograde tracer cholera toxin B subunit (CTb) inthe Pc. After CTb injections in the Pc, a large number of retrogradely labeled neurons were seen in the central nucleus of the amygdala, the lateral part of the bed nucleus of the stria terminalis, the posterior hypothalamic areas, the mesencephalic reticular formation, the nucleus locus subcoeruleus, the nucleus pontis caudalis, other portions ofthe Pc, the nucleus reticularis dorsalis, the trigeminal sensory complex, and the nucleus of the solitary tract. We further found that the Pc receives 1) serotoninergic afferents from the raphe dorsalis,magnus, and obscurus nuclei; 2) noradrenergic inputs from the dorsolateral pontine tegmentum; 3) cholinergic afferents from the lateral medullary reticularformation; 4) substance P-like afferents from the central nucleus of the amygdala, bed nucleus of the stria terminalis, periaqueductal gray, and nucleus ofthe solitary tract; and 5) methionine-enkephalin-like projections from the periaqueductal gray, the nucleus of the solitary tract, the lateral pontine and medullary reticular formation, and the spinal trigeminal nucleus. We further found that the Pc do notreceive afferents from brainstem structures responsible for muscle atonia, such as the ventromedial medulla and the dorsomedial pontine tegmentum, and therefore may not be part of the circuit inhibiting the brainstem motoneurons during paradoxical sleep. (C) 1994 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 21:00:48