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Titolo:
Thyroid peroxidase activity, hepatic glucose-6-phosphate dehydrogenase activity and corticosterone level in plasma and tissues of rats fed different dietary fats
Autore:
Rosolowska-Huszcz, D; Gromadzka-Ostrowska, J; Wilczak, J; Romanowicz, K; Borysiak, M; Debska, M; Mazurek, B;
Indirizzi:
Agr Univ Warsaw, Dept Dietet, Fac Human Nutr & Home Econ, PL-02787 Warsaw,Poland Agr Univ Warsaw Warsaw Poland PL-02787 Home Econ, PL-02787 Warsaw,Poland Agr Univ Warsaw, Fac Vet Sci, Dept Anim Physiol, PL-02787 Warsaw, Poland Agr Univ Warsaw Warsaw Poland PL-02787 Physiol, PL-02787 Warsaw, Poland Polish Acad Sci, Kielanowski Inst Anim Physiol & Nutr, PL-05110 Jablonna, Poland Polish Acad Sci Jablonna Poland PL-05110 Nutr, PL-05110 Jablonna, Poland
Titolo Testata:
JOURNAL OF ANIMAL AND FEED SCIENCES
fascicolo: 1, volume: 10, anno: 2001,
pagine: 185 - 200
SICI:
1230-1388(2001)10:1<185:TPAHGD>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
GENE-EXPRESSION; MESSENGER-RNA; HORMONE; GLUCOCORTICOIDS; CHOLESTEROL; ACIDS; TRIIODOTHYRONINE; THYROXINE; LIPOGENESIS; METABOLISM;
Keywords:
adrenal gland; corticosterone; dietary fat; glucose-6-phosphate dehydrogenase; thyroid peroxidase;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Rosolowska-Huszcz, D Agr Univ Warsaw, Dept Dietet, Fac Human Nutr & Home Econ, Nowoursynowska 166, PL-02787 Warsaw, Poland Agr Univ Warsaw Nowoursynowska 166 Warsaw Poland PL-02787
Citazione:
D. Rosolowska-Huszcz et al., "Thyroid peroxidase activity, hepatic glucose-6-phosphate dehydrogenase activity and corticosterone level in plasma and tissues of rats fed different dietary fats", J ANIM FEED, 10(1), 2001, pp. 185-200

Abstract

Thyroid and adrenal gland activity were evaluated together with liver lipogenic activity in rats fed diets containing different fats. After one- weekof a fat- free regimen, male Wistar rats weighing 100-120 g (at the beginning of the experiment) were divided into four groups fed diets with different fats: L - lard, S - sunflower oil, P - palm oil, R - rape seed oil. The activity of thyroid peroxidase (TPO), the key enzyme in thyroid hormone biosynthesis, corticosterone (Cs) concentration in plasma, the adrenal glands,aorta, and heart, plasma total cholesterol concentration and glucose-6-phosphate dehydrogenase (G-6-PD) activity in the liver, as an index of lipogenic activity, were determined after fat-free feeding and after one and threeweeks of fat-supplying diets. TPO activity increased after one week on fat-containing diets fed to groups S and P; after three weeks it was higher than after the fat-free period in groups P, S and L and directly related to palmitic acid intake and plasma total cholesterol concentration. Various patterns of changes in Cs concentration in plasma and tissues were observed suggesting an influence of dietary fat composition on hormone distribution. After three weeks of feeding fat, Cs concentration in plasma was lower than after the fat-free regimen and did not differ among dietary groups, while in tissues it was dependent on the type of dietary fat. Tissue Cs was higherin the adrenals in groups P and R, in the aorta in group R, and in the heart in groups L and S, After three weeks of feeding fat the Cs concentrationin the aorta of groups S and L, and in the adrenals in group S was lower than after the fat- free regimen, whereas in the heart it was higher in all groups. The decrease in hepatic G-6-PD activity after introducing diets with fats depended on the kind of dietary fat it decreased to lower levels in groups S and R than in groups L and P. The results obtained indicate that dietary fat composition can affect thyroid activity, hepatic lipogenesis and corticosterone secretion and/or distribution in different manners. This suggests that, among others, metabolic effects of dietary fat can result from changes in relations between thyroid and adrenal gland activities.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 03:52:25