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Titolo:
Prepubertal increases in the levels of two salmon gonadotropin-releasing hormone mRNAs in the ventral telencephalon and preoptic area of masu salmon
Autore:
Ando, H; Sasaki, Y; Okada, H; Urano, A;
Indirizzi:
Hokkaido Univ, Grad Sch Sci, Div Biol Sci, Sapporo, Hokkaido 0600810, Japan Hokkaido Univ Sapporo Hokkaido Japan 0600810 oro, Hokkaido 0600810, Japan Hokkaido Fishery Hatchery, Eniwa, Hokkaido 0611433, Japan Hokkaido FisheryHatchery Eniwa Hokkaido Japan 0611433 ido 0611433, Japan
Titolo Testata:
NEUROSCIENCE LETTERS
fascicolo: 2, volume: 307, anno: 2001,
pagine: 93 - 96
SICI:
0304-3940(20010713)307:2<93:PIITLO>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
ONCORHYNCHUS-MASOU; SOCKEYE-SALMON; BRAIN; GNRH; PRECURSOR; PUBERTY; GENES; RATS; RNA;
Keywords:
gonadotropin-releasing hormone; preoptic area; ontogenic change; sexual maturation; salmon; reverse transcription-polymerase chain reaction; gene expression;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Ando, H Hokkaido Univ, Grad Sch Sci, Div Biol Sci, Sapporo, Hokkaido 0600810, Japan Hokkaido Univ Sapporo Hokkaido Japan 0600810 kaido 0600810, Japan
Citazione:
H. Ando et al., "Prepubertal increases in the levels of two salmon gonadotropin-releasing hormone mRNAs in the ventral telencephalon and preoptic area of masu salmon", NEUROSCI L, 307(2), 2001, pp. 93-96

Abstract

Ontogenic changes in the expression levels of two salmon gonadotropin-releasing hormone genes (sGnRH-I and -II) were examined in the forebrain regionincluding the ventral telencephalon and preoptic area of masu salmon by competitive reverse transcription-polymerase chain reaction (RT-PCR). Two genes showed similar expression patterns throughout the lifetime in both sexes, although the levels of sGnRH-II mRNA were about 20 times higher than those of sGnRH-I mRNA. In males, the levels of sGnRH mRNAs increased at the beginning of the second year and reached their maximum in the autumn. The levels decreased gradually until the autumn of the third year when fish sexually matured. In females, the levels reached their maximum in the first autumnand fluctuated considerably along with the seasons in the third year. These results suggest that, in the salmon brain, sGnRH genes are activated longbefore the sexual maturation under sexually different control mechanisms. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 07:56:26