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Titolo:
Ovulation delay induced by blockade of the cholinergic system on dioestrus-1, is related to changes in dopaminergic activity of the preoptic anterior-hypothalamic area of the rat
Autore:
Cruz, ME; Villegas, G; Dominguez-Gonzalez, A; Chavira, R; Dominguez, R;
Indirizzi:
Univ Nacl Autonoma Mexico, Fac Estudios Super Zaragoza, Neuroendocrinol Lab, Unidad Invest Biol Reprod, Mexico City 04510, DF, Mexico Univ Nacl Autonoma Mexico Mexico City DF Mexico 04510 y 04510, DF, Mexico Inst Nacl Nutr Salvador Zubiran, Dept Reprod Biol, Mexico City, DF, MexicoInst Nacl Nutr Salvador Zubiran Mexico City DF Mexico o City, DF, Mexico
Titolo Testata:
BRAIN RESEARCH BULLETIN
fascicolo: 4, volume: 54, anno: 2001,
pagine: 339 - 344
SICI:
0361-9230(20010301)54:4<339:ODIBBO>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
HORMONE-RELEASING HORMONE; ESTROUS-CYCLE; OVARIECTOMIZED RATS; MUSCARINIC RECEPTORS; TYROSINE-HYDROXYLASE; MEDIAN-EMINENCE; NEURON ACTIVITY; HALOPERIDOL; FEEDBACK; RHYTHM;
Keywords:
atropine-sulphate; luteinizing hormone; 17 beta-oestradiol; oestrous cycle;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Cruz, ME UIBR, FES Zaragoza, AP 9-020,CP 15000, Mexico City, DF, Mexico UIBR AP 9-020,CP 15000 Mexico City DF Mexico co City, DF, Mexico
Citazione:
M.E. Cruz et al., "Ovulation delay induced by blockade of the cholinergic system on dioestrus-1, is related to changes in dopaminergic activity of the preoptic anterior-hypothalamic area of the rat", BRAIN RES B, 54(4), 2001, pp. 339-344

Abstract

One hour after the injection of 100 mg/kg of atropine-sulphate at 1300 h of dioestrus-l, there was an abrupt increase of 17 beta -oestradiol plasma level and a significant increase in dopaminergic neural activity in preopticanterior-hypothalamic area, without changes in luteinizing hormone serum level, in comparison with the saline injected group, Animals injected with atropine-sulphate showed a second increase in dopaminergic neural activity in the preoptic anterior-hypothalamic at 1100 of dioestrus-2 (atropine-sulphate 0.471 +/- 0.7 vs. saline 0.241 +/- 0.03, p < 0.01), In this group of animals, the preovulatory surges of 17<beta>-oestradiol and luteinizing hormone occurred simultaneously at 1700 h of the expected day of oestrus; spontaneous ovulation was delayed until the expected day of dioestrus-l. Present results suggest that during dioestrus-l there is a functional relationship between the cholinergic and dopaminergic systems in preoptic anterior-hypothalamic area, regulating the release of luteinizing hormone resulting in ovulation, (C) 2001 Elsevier Science Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/02/20 alle ore 14:50:09