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Titolo:
Mechanisms underlying the cost of living in animals
Autore:
Hulbert, AJ; Else, PL;
Indirizzi:
Univ Wollongong, Metab Res Ctr, Wollongong, NSW 2522, Australia Univ Wollongong Wollongong NSW Australia 2522 ongong, NSW 2522, Australia Univ Wollongong, Dept Biol Sci, Wollongong, NSW 2522, Australia Univ Wollongong Wollongong NSW Australia 2522 ongong, NSW 2522, Australia Univ Wollongong, Dept Biomed Sci, Wollongong, NSW 2522, Australia Univ Wollongong Wollongong NSW Australia 2522 ongong, NSW 2522, Australia
Titolo Testata:
ANNUAL REVIEW OF PHYSIOLOGY
, volume: 62, anno: 2000,
pagine: 207 - 235
SICI:
0066-4278(2000)62:<207:MUTCOL>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
FATTY-ACID COMPOSITION; INNER MEMBRANE PHOSPHOLIPIDS; CYTOCHROME-OXIDASE ACTIVITY; LIPID-PROTEIN INTERACTIONS; MITOCHONDRIAL PROTON LEAK; STANDARD METABOLIC-RATE; AGE-RELATED-CHANGES; LIVER-MITOCHONDRIA; ENERGY-METABOLISM; OXYGEN-CONSUMPTION;
Keywords:
metabolism; membranes; polyunsaturation; active transport; allometry;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
162
Recensione:
Indirizzi per estratti:
Indirizzo: Hulbert, AJ Univ Wollongong, Metab Res Ctr, Wollongong, NSW 2522, Australia Univ Wollongong Wollongong NSW Australia 2522 2522, Australia
Citazione:
A.J. Hulbert e P.L. Else, "Mechanisms underlying the cost of living in animals", ANN R PHYSL, 62, 2000, pp. 207-235

Abstract

The cost of living can be measured as an animal's metabolic rate. Basal metabolic rate (BMR) is factorially related to other metabolic rates. Analysis of BMR variation suggests that metabolism is a series of linked processesvarying in unison. Membrane processes, such as maintenance of ion gradients, are important costs and components of BMR. Membrane bilayers in metabolically active systems are more polyunsaturated and less monounsaturated thanmetabolically less-active systems. Such polyunsaturated membranes have been proposed to result in an increased molecular activity of membrane proteins, and in this manner the amount of membrane and its composition can act asa pacemaker for metabolism. The potential importance of membrane acyl composition in metabolic depression, hormonal control of metabolism, the evolution of endothermy, as well as its implications for lifespan and human health, are briefly discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 13:24:03