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Titolo:
Neuropeptide-Y: A possible mediator of prolactin-induced feeding and regulator of energy balance in the ring dove (Streptopelia risoria)
Autore:
Strader, AD; Buntin, JD;
Indirizzi:
Univ Wisconsin, Dept Biol Sci, Milwaukee, WI 53201 USA Univ Wisconsin Milwaukee WI USA 53201 t Biol Sci, Milwaukee, WI 53201 USA
Titolo Testata:
JOURNAL OF NEUROENDOCRINOLOGY
fascicolo: 4, volume: 13, anno: 2001,
pagine: 386 - 392
SICI:
0953-8194(200104)13:4<386:NAPMOP>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
FOOD-INTAKE; INDUCED HYPERPHAGIA; GROWTH-HORMONE; PEPTIDE-YY; BEHAVIOR; RATS; INJECTION; BRAIN; IMMUNOREACTIVITY; LOCALIZATION;
Keywords:
avian; neuropeptide-y; prolactin; hypothalamus; food intake;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Buntin, JD Univ Wisconsin, Dept Biol Sci, POB 413, Milwaukee, WI 53201 USAUniv Wisconsin POB 413 Milwaukee WI USA 53201 kee, WI 53201 USA
Citazione:
A.D. Strader e J.D. Buntin, "Neuropeptide-Y: A possible mediator of prolactin-induced feeding and regulator of energy balance in the ring dove (Streptopelia risoria)", J NEUROENDO, 13(4), 2001, pp. 386-392

Abstract

Although neuropeptide-Y (NPY) has been widely reported to be a potent stimulator of feeding activity and regulator of energy homeostasis, most of thesupportive evidence for such effects has been gathered in mammalian species. This study characterized the orexigenic potency of NPY in an avian species, the ring dove, and measured changes in hypothalamic NPY-immunoreactive (NPY-ir) cell numbers in response to energy state fluctuations or intracranial administration of the potent orexigenic hormone prolactin. Food intake was significantly elevated in male doves at 1 h after intracerebroventricular (i.c.v.) injection of 0.25 and 0.5 mug NPY but not after injection of a higher dose (1.0 mug). In time course studies, food intake was increased at1 h after i.c.v. injection of 0.5 mug NPY but was not elevated at 2, 3, or4 h. The number of NPY-ir cell bodies in the infundibular region of the dove hypothalamus increased two to four-fold following acute food deprivation, chronic food restriction, or repeated i.c.v. injections of prolactin. No additive effects were observed when food restriction and prolactin treatment were combined. These findings suggest that NPY is involved in energy homeostasis in doves and are consistent with the hypothesis that prolactin-induced hyperphagia is mediated in part by NPY.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 21:51:44