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Titolo:
Osmoregulatory actions of the GH/IGF axis in non-salmonid teleosts
Autore:
Mancera, JM; McCormick, SD;
Indirizzi:
Univinadiz, Fac Ciencias Mar, Dept Biol Anim, Puerto Real 11510, Cadiz, Spa Univ Cadiz Puerto Real Cadiz Spain 11510 m, Puerto Real 11510, Cadiz, Spa USGS,01376 Resources Div, Conte Anadromous Fish Res Ctr, Turners Falls, MAUSGS Turners Falls MA USA 01376 nadromous Fish Res Ctr, Turners Falls, MA
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
fascicolo: 1, volume: 121, anno: 1998,
pagine: 43 - 48
SICI:
0305-0491(199809)121:1<43:OAOTGA>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROWTH-FACTOR-I; TILAPIA OREOCHROMIS-MOSSAMBICUS; CHLORIDE CELL-FUNCTION; IGF-I; HORMONE SECRETION; SPARUS-AURATA; FRESH-WATER; COHO SALMON; DIFFERENTIAL EXPRESSION; FUNDULUS-HETEROCLITUS;
Keywords:
growth hormone; insulin-like growth factor; fish; teleost; non-salmonids; osmoregulation; seawater adaptation; gill; Na+, K+-ATPase;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
57
Recensione:
Indirizzi per estratti:
Indirizzo: Mancera, JM Univinadiz, Fac Ciencias Mar, Dept Biol Anim, Puerto Real 11510, Cadiz, Spa Univ Cadiz Puerto Real Cadiz Spain 11510 al 11510, Cadiz, Spa
Citazione:
J.M. Mancera e S.D. McCormick, "Osmoregulatory actions of the GH/IGF axis in non-salmonid teleosts", COMP BIOC B, 121(1), 1998, pp. 43-48

Abstract

Salmonid fishes provided the first findings on the influence of the growthhormone (GH)/insulin-like growth factor I (IGF-I) axis on osmoregulation in teleost fishes. Recent studies on non-salmonid species, however, indicatethat this physiological action of the GH/IGF-I axis is not restricted to salmonids or anadromous fishes. GH-producing cells in the pituitary of fish acclimated to different salinities show different degrees of activation depending on the species studied. Plasma GH levels either increase or do not change after transfer of fish from freshwater to seawater. Treatment with GHor IGF-I increases salinity tolerance and/or increases gill Na+,K+-ATPase activity of killifish (Fundulus heteroclitus), tilapia (Oreochromis mossambicus and Oreochromis niloticus) and striped bass (Morone saxatilis). As in salmonids, a positive interaction between GH and cortisol for improving hypoosmoregulatory capacity has been described in tilapia (O. mossambicus). Research on the osmoregulatory role of the GH/IGF-I axis is derived from a small number of teleost species. The study of more species with different osmoregulatory patterns will be necessary to fully clarify the osmoregulatory role of GH/IGF-I axis in fish. The available data does suggest, however, that the influence of the GH/IGF-I axis on osmoregulation may be a common feature of euryhalinity in teleosts. (C) 1998 Elsevier Science Inc. All rightsreserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 04:27:00