Abstract
Summary
Rats deprived of food at the beginning of the experiment were exposed to a cold environment at 3-5 °C for periods varying from 4 to 30 hours. The release of FFA by epididymal adipose tissue in vitro was compared to that from animals maintained at room temperature of 25°C. FFA was released in significantly greater amounts by the tissue of the animals exposed to cold until the fast had progressed for 30 hours, at which time there was no difference between the two groups. Following a fast of 18 hours, the adipose tissue from the cold-exposed group and from the warm room group responded similarly to epinephrine and norepinephrine.
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