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Effects of hypophysectomy and adrenalectomy on naloxone-induced analgesia
1School of Psychology, University of New South Wales, Sydney, Australia.
Psychopharmacology
|January 1, 1991
Abstract:
Experiment 1 demonstrated that pairings of the opiate antagonist, naloxone, with a heated floor came to induce analgesia, as indexed by the latencies with which rats licked their paws. This analgesia appears to be neurally mediated because it is unaffected by either hypophysectomy (experiment 2) or adrenalectomy (experiment 3). However, there was evidence for a pituitary involvement, as its removal potentiated the analgesic effect accruing from naloxone-stressor pairings.