Food deprivation and hypothermia in desynchronized sleep-deprived rats
Braz. j. med. biol. res
;
29(1): 41-6, Jan. 1996. graf
Artigo
em Inglês
| LILACS
| ID: lil-161651
RESUMO
Reports of the effect of desynchronized sleep (DS) deprivation on body temperature (Tb) of rats in the literature are contradictory. Since conspicuous body weight loss is common in such deprivation, the effect of food plus DS deprivation on Tb of adult male Wistar rats was studied. DS deprivation carried out by the small platform method with food ad libitum (N = 8) induced hyperthermia (Tb above 38.5 degrees Celsius) in 1 to 3 rats daily until the 8th day, when a case of discrete hypothermia (Tb below 36.9 degrees Celsius) appeared. Food deprivation alone started to induce hypothermia on the third day in one (20 percent) out of five rats. Fasting imposed from the 5th to the 8th day of DS deprivation (N = 12) caused hypothermia in 33 percent and 67 percent of the animals on the second and third day of starvation, respectively. DS compensatory manifestations in 6 starved rats intensified (N = 2) or precipitated (N = 2) hypothermia after the end of sleep deprivation. It is concluded that the hypothermia is not a primary effect of DS deprivation, and this state of sleep seems to have its particular functional role which is independent of thermoregulation.
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LILACS (Américas)
Assunto principal:
Privação do Sono
/
Temperatura Corporal
/
Privação de Alimentos
/
Hipotermia
Limite:
Animais
Idioma:
Inglês
Revista:
Braz. j. med. biol. res
Assunto da revista:
Biologia
/
Medicina
Ano de publicação:
1996
Tipo de documento:
Artigo
/
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