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Titolo:
Paradigms of growth in fish
Autore:
Mommsen, TP;
Indirizzi:
Univ Victoria, Dept Biochem & Microbiol, Victoria, BC V8W 3P6, Canada UnivVictoria Victoria BC Canada V8W 3P6 ol, Victoria, BC V8W 3P6, Canada
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
fascicolo: 2-3, volume: 129, anno: 2001,
pagine: 207 - 219
SICI:
1096-4959(200106)129:2-3<207:POGIF>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
TROUT ONCORHYNCHUS-MYKISS; AMINO-ACID-ABSORPTION; STRIPED BASS HYBRIDS; SALMON SALMO-SALAR; CYPRINUS-CARPIO L; RAINBOW-TROUT; PROTEIN-SYNTHESIS; SKELETAL-MUSCLE; CHANNEL CATFISH; DYNAMIC ACTION;
Keywords:
insulin; IGF-I; receptors; arginine; indeterminate growth; growth hormone; muscle fibers; myostatin; proteolysis; creatine;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
71
Recensione:
Indirizzi per estratti:
Indirizzo: Mommsen, TP Univ Victoria, Dept Biochem & Microbiol, POB 3055, Victoria, BC V8W 3P6, Canada Univ Victoria POB 3055 Victoria BC Canada V8W 3P6 3P6, Canada
Citazione:
T.P. Mommsen, "Paradigms of growth in fish", COMP BIOC B, 129(2-3), 2001, pp. 207-219

Abstract

Most fish are indeterminate growers with white muscle making up the majority of the acquired bulk. Within the muscle, the myofibrillar fraction accounts for almost two-thirds of the protein synthetic activity, implying that it is accretion of myofibrillar proteins that makes the single most important contribution to fish growth. Fish muscle growth itself is not linear andoccurs through a combination of hyperplasia and hypertrophy in post-juvenile stages. Superimposed on periodicity of growth in length and mass can be other phases governed by lunar, reproductive or circannual cycles. Data on fish growth are discussed in the framework of site-specific muscle abundance, metabolic and functional zonation of muscle, proliferation and differentiation of satellite cells and the contribution of myofibrillar proteins. Hormonal control of muscle growth is described against the backdrop of plasmaavailability of myogens (insulin, IGF-I, growth hormone), distribution anddynamics of their respective receptors, and their interactions. Important contributions of the 'supply side' are discussed with hormones regulating amino acid resorption from the intestine, intestinal growth, liver processing and amino acid uptake by the muscle. Data are also interpreted from metabolic angles, to explain lipolytic and nitrogen-sparing effects of growth hormones, and lipogenic effects of insulin and high protein diets. Finally, special attention is devoted to the multifaceted roles of arginine in fish growth, as precursor, intermediate and hormone secretagogue. (C) 2001 Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 22:15:47