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Titolo:
Exogenous melatonin affects lipids and enzyme activities in mink (Mustela vison) liver
Autore:
Nieminen, P; Kakela, R; Mustonen, AM; Hyvarinen, H; Asikainen, J;
Indirizzi:
Univ Joensuu, Dept Biol, FIN-80101 Joensuu, Finland Univ Joensuu JoensuuFinland FIN-80101 Biol, FIN-80101 Joensuu, Finland
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
fascicolo: 2, volume: 128, anno: 2001,
pagine: 203 - 211
SICI:
1532-0456(200102)128:2<203:EMALAE>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
WINTER FUR GROWTH; ENERGY-METABOLISM; WEIGHT-LOSS; FARM MINK; PROLACTIN; MOLT;
Keywords:
glucose-6-phosphatase; lipase esterase; lipids; liver enzymes; melatonin; mink; Mustela vison; phosphorylase; seasonality; weight regulation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Nieminen, P Univ Joensuu, Dept Biol, POB 111, FIN-80101 Joensuu, Finland Univ Joensuu POB 111 Joensuu Finland FIN-80101 ensuu, Finland
Citazione:
P. Nieminen et al., "Exogenous melatonin affects lipids and enzyme activities in mink (Mustela vison) liver", COMP BIOC C, 128(2), 2001, pp. 203-211

Abstract

Exogenous melatonin as subcutaneous 2.7-mg implants was given to eight female and male minks in late July with an equal number of animals in the control groups. The liver enzyme activities and major lipids of liver and plasma were measured in October-November. Melatonin had Very pronounced effects on the lipid and carbohydrate metabolism of the minks and there was also a clear sexual dimorphism. In the males, melatonin decreased the lipase esterase activity of the liver. In the liver of the females, however, melatonin increased the glucose-6-phosphatase activity. Due to melatonin treatment the liver triacylglycerol contents diminished in both sexes. At the same time, in the females the liver cholesterol levels were decreased. In the plasmalipids, the only change was a fall in the polar lipids of the melatonin-treated females. Melatonin seems to be responsible for the metabolic changes associated with the onset of wintering, especially for the acceleration of the deposition of subcutaneous fat reserves. The smaller females experiencethe effects of exogenous melatonin more rapidly than the males. Perhaps the smaller body size requires an earlier onset of metabolic preparation for the winter. (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 10/04/20 alle ore 01:34:48