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J Physiol Vol 244, Issue 1 pp 197-206
Copyright © 1975 by The Physiological Society
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Behavioural and autonomic induction of prostaglandin E-1 fever in squirrel monkeys.

 L I Crawshaw and J T Stitt

1. Prostaglandins E1 (PGE1) was injected into the preoptic/anterior hypothalamic (PO/AH) area of the squirrel monkey. 2. Increases in rectal temperature (Tre) produced by PGE1 injections of 20 ng to 500 ng were dose-dependent. 3. When ambient temperature (Ta) was below the thermoneutral zone, increases in Tre were produced entirely by increases in metabolic rate. With Ta at the upper end of the thermoneutral zone, increases in Tre were produced by vasoconstriction in addition to lesser increases in metabolic rate. 4. During sessions of behavioural temperature regulation, PGE1 injections were followed by the selection of a higher Ta, increased skin temperature and subsequent increases in Tre. 5. PGE1 injections produce dose-dependent increases in Tre which are similar regardless of ambient temperature or whether behavioural or autonomic means are utilized to raise the heat content of the body.




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