INVESTIGADORES
VISSIO Paula Gabriela
artículos
Título:
Distribution of neuropeptide Y neuron and fibers in the brain of the pejerrey Odontesthes bonariensis (Teleostei, Atherinidae)
Autor/es:
TRAVERSO, J; RAVAGLIA, M; VISSIO, PAULA; MAGGESE, M. CRISTINA; PAZ, D
Revista:
ANATOMIA HISTOLOGIA EMBRYOLOGIA-JOURNAL OF VETERINARY MEDICINE SERIES C
Editorial:
BLACKWELL PUBLISHING
Referencias:
Año: 2003 vol. 32 p. 29 - 35
ISSN:
0340-2096
Resumen:
The aim of this study was to determine the distribution of
Neuropeptide-Y (NPY) immunoreactive neurons and fibres in
the brain and pituitary of Odontesthes bonariensis by immunohistochemical
methods. A wide distribution of immunoreactive
NPY (ir-NPY) cells and fibres in the forebrain and
midbrain was observed. A prominent ir-NPY nucleus was
found in the ventral telencephalon and other ir-NPY cells
groups were recognized at the dorso-medial telencephalon.
The diencephalon showed ir-NPY cells in the Nucleus entopeduncularis,
the Nucleus preopticus periventricularis and in
the Nucleus lateralis tuberis. Ir-NPY fibres were conspicuous
in the preoptic region and the hypothalamus. There were also
numerous ir-NPY fibres at the epithalamic level running
ventrally to the hypothalamus and the pituitary stalk. At the
rhomboencephalic level, the ir-NPY neurons were observed in
the Locus coeruleus. Double-labelled immunostaining showed
a close association between ir-NPY fibres that reach the
adenohypophysis and growth hormone (GH)- and gonadotropin
(GtH)-expressing cells. Although our results exhibit
some relevant differences when compared to other fish groups,
they support the existence of a conserved NPY system in
teleosts.