High- or low-salt diet from weaning to adulthood: effect on body weight, food intake and energy balance in rats.
Nutr Metab Cardiovasc Dis
; 16(2): 148-55, 2006 Mar.
Article
en En
| MEDLINE
| ID: mdl-16487915
ABSTRACT
OBJECTIVE:
To get some additional insight on the mechanisms of the effect of salt intake on body weight. DESIGN ANDMETHODS:
Rats were fed a low (LSD), normal (NSD), or high (HSD) salt diet. In a first set, body weight, tail-cuff blood pressure, fasting plasma thyroid-stimulating hormone, triiodothyronine, L-thyroxine, glucose, insulin, and angiotensin II were measured. Angiotensin II content was determined in white and brown adipose tissues. Uncoupling protein 1 expression was measured in brown adipose tissue. In a second set, body weight, food intake, energy balance, and plasma leptin were determined. In a third set of rats, motor activity and body weight were evaluated.RESULTS:
Blood pressure increased on HSD. Body weight was similar among groups at weaning, but during adulthood it was lower on HSD and higher on LSD. Food intake, L-thyroxine concentration, uncoupling protein 1 expression and energy expenditure were higher in HSD rats, while non-fasting leptin concentration was lower in these groups compared to NSD and LSD animals. Plasma thyroid-stimulating hormone decreased on both HSD and LSD while plasma glucose and insulin were elevated only on LSD. A decrease in plasma angiotensin II was observed in HSD rats. On LSD, an increase in brown adipose tissue angiotensin II content was associated to decreased uncoupling protein 1 expression and energy expenditure. In this group, a low angiotensin II content in white adipose tissue was also found. Motor activity was not influenced by the dietary salt content.CONCLUSIONS:
Chronic alteration in salt intake is associated with changes in body weight, food intake, hormonal profile, and energy expenditure and tissue angiotensin II content.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Peso Corporal
/
Ingestión de Energía
/
Cloruro de Sodio Dietético
/
Dieta Hiposódica
/
Ingestión de Alimentos
/
Metabolismo Energético
Límite:
Animals
Idioma:
En
Revista:
Nutr Metab Cardiovasc Dis
Asunto de la revista:
ANGIOLOGIA
/
CARDIOLOGIA
/
CIENCIAS DA NUTRICAO
/
METABOLISMO
Año:
2006
Tipo del documento:
Article
País de afiliación:
Brasil