The nitric oxide synthase (NOS)-like immunoreactive extrahypophysial projections of the neurosecretory preoptic nucleus of the electric ray (elasmobranchs) suggest a neuroregulatory role for this nucleus.
Neurosci Lett
; 195(2): 85-8, 1995 Aug 04.
Article
em En
| MEDLINE
| ID: mdl-7478274
ABSTRACT
The extrahypohysial projections of the neurosecretory preoptic nucleus (PON) of the electric ray were studied with the aid of an antibody against nitric oxide synthase (NOS). PON neurons were the only NOS-like-immunoreactive (NOS-ir) cells in the brain. These neurons gave rise to both hypophysial and extrahypophysial NOS-ir projections. Some fibres coursed from the PON to the neurointermediate lobe in the preoptic-hypophysial tract. Other NOS-ir fibres coursed either rostrally or caudally forming terminal fields in the telencephalon (subpallial region), diencephalon (preoptic nucleus, ventrolateral thalamus and posterior recess nucleus), tuberal region (area tegmentalis ventralis and substantia nigra), mesencephalon (lateral tegmentum), rhombencephalon (isthmal nucleus, vagal viscerosensory column and ventrolateral reticular area) and the spinal cord (intermediate horn). The possible involvement of the extrahypophysial PON projections in neuroregulation of visceral centres is discussed.
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Base de dados:
MEDLINE
Assunto principal:
Hipófise
/
Área Pré-Óptica
/
Torpedo
/
Óxido Nítrico Sintase
Limite:
Animals
Idioma:
En
Revista:
Neurosci Lett
Ano de publicação:
1995
Tipo de documento:
Article
País de afiliação:
Espanha