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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Type of diet modulates the metabolic response to sleep deprivation in rats

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Martins, Paulo J. F. [1] ; Fernandes, Leandro [1] ; de Oliveira, Allan C. [1] ; Tufik, Sergio [1] ; D'Almeida, Vania [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Fed Sao Paulo, Dept Psychobiol, Sao Paulo - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: NUTRITION & METABOLISM; v. 8, DEC 12 2011.
Citações Web of Science: 10

Background: Evidence suggests that sleep loss is associated with an increased risk of obesity and diabetes; however, animal models have failed to produce weight gain under sleep deprivation (SD). Previous studies have suggested that this discrepancy could be due to more extreme SD conditions in experimental animals, their higher resting metabolic rate than that of humans, and the decreased opportunity for animals to ingest high-calorie foods. Thus, our objective was to determine whether diets with different textures/compositions could modify feeding behavior and affect the metabolic repercussions in SD in rats. Methods: Three groups of male rats were used: one was designated as control, one was sleep deprived for 96 h by the platform technique (SD 96h) and one was SD 96h followed by a 24-h recovery (rebound). In the first experiment, the animals were fed chow pellets (CPs); in the second, they received high-fat diet and in the third, they were fed a liquid diet (LD). Results: We observed that SD induces energy deficits that were related to changes in feeding behavior and affected by the type of diet consumed. Regardless of the diet consumed, SD consistently increased animals' glucagon levels and decreased their leptin and triacylglycerol levels and liver glycogen stores. However, such changes were mostly avoided in the rats on the liquid diet. SD induces a wide range of metabolic and hormonal changes that are strongly linked to the severity of weight loss. Conclusions: The LD, but not the CP or high-fat diets, favored energy intake, consequently lessening the energy deficit induced by SD. (AU)

Processo FAPESP: 98/14303-3 - Center for Sleep Studies
Beneficiário:Sergio Tufik
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs