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Following either chronic exposure to 6 degrees C, or outdoor winter exposure, or chronic treatment with tyramine rats were exposed to -40 degrees C and their oxygen consumption and colonic temperature monitored. Fall in body temperature with time of exposure followed a sigmoid curve which had an inflection point around 32.9 degrees C. Both the time required for body temperature to reach this point and hypothermic resistance defined as the total O2 consumed up to the inflection time were useful indices of resistance to severe cold; Three days before the cold tests, capacity for norepinephrine-induced nonshivering thermogenesis was measured in all animals by examination of their metabolic response to tyraminemthe magnitude of response to tyramine correlated well with hypothermic resistance only for those rats chroncally treated with tyramine. It is concluded that it is impossible to predict with any reasonable degree of confidence the cold resistance of a rat from its tyramine response. In cold-acclimated rats, factors in addition to norepinephrine sensitivity are significantly involved in cold resistance and deserve further studies.
O Héroux, and
E Pagé, and
J Leblanc, and
J Leduc, and
R Gilbert, and
A Villemaire, and
P Rivest
January 1988,
European journal of applied physiology and occupational physiology,
O Héroux, and
E Pagé, and
J Leblanc, and
J Leduc, and
R Gilbert, and
A Villemaire, and
P Rivest
February 1977,
Journal of applied physiology: respiratory, environmental and exercise physiology,
O Héroux, and
E Pagé, and
J Leblanc, and
J Leduc, and
R Gilbert, and
A Villemaire, and
P Rivest
January 1969,
Federation proceedings,
O Héroux, and
E Pagé, and
J Leblanc, and
J Leduc, and
R Gilbert, and
A Villemaire, and
P Rivest
March 1976,
Zeitschrift fur Tierphysiologie, Tierernahrung und Futtermittelkunde,
O Héroux, and
E Pagé, and
J Leblanc, and
J Leduc, and
R Gilbert, and
A Villemaire, and
P Rivest
January 1982,
Comparative biochemistry and physiology. A, Comparative physiology,
O Héroux, and
E Pagé, and
J Leblanc, and
J Leduc, and
R Gilbert, and
A Villemaire, and
P Rivest
January 1987,
The Japanese journal of physiology,
O Héroux, and
E Pagé, and
J Leblanc, and
J Leduc, and
R Gilbert, and
A Villemaire, and
P Rivest
August 1974,
The American journal of physiology,
O Héroux, and
E Pagé, and
J Leblanc, and
J Leduc, and
R Gilbert, and
A Villemaire, and
P Rivest
January 1982,
The Japanese journal of physiology,
O Héroux, and
E Pagé, and
J Leblanc, and
J Leduc, and
R Gilbert, and
A Villemaire, and
P Rivest
January 1979,
Ceskoslovenska fysiologie,
O Héroux, and
E Pagé, and
J Leblanc, and
J Leduc, and
R Gilbert, and
A Villemaire, and
P Rivest
February 1984,
Brain research bulletin,
