Naloxone interactions with morphine-and shock-potentiated tonic immobility in chickens.
Opiate receptor involvement in tonic immobility was examined by administering various does of the opiate antagonist naloxone before measuring morphine-potentiated, shock-poteniated or unpotentiated tonic immobility in chickens. Naloxone attenuated morphine-potentiated, but not shock-potentiated or unpotentiated tonic immobility. Morphine-potentiated tonic immobility appears to be opiate specific.
D000818:Animals; D002389:Catatonia / Q000139:chemically induced / Q000209:etiology / Q000503:physiopathology*; D002645:Chickens; D004347:Drug Interactions; D004597:Electroshock; D006801:Humans; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009270:Naloxone / Q000494:pharmacology*
D009270:Naloxone; D009020:Morphine