title: Animal pharmacology of Wy-16,225, a new analgesic agent.
abstract: The analgesic potency of Wy-16,225 in rodents and primates is greater than morphine while antagonist potency is slightly less than that of nalorphine. The compound demonstrates properties unlike those of standard narcotic and narcotic antagonist agents and has a wide margin of safety. In dependence liability studies, Wy-16,225 neither acutely substitutes for morphine nor produces direct dependence when administered chronically to monkeys. Wy-16,225 has no anti-inflammatory properties, is not constipating in rats, has no significant cardiovascular toxicity in dogs and produces minimal respiratory depression in monkeys.
mesh_terms: D000700:Analgesics / Q000494:pharmacology*; D000818:Animals; D001952:Bridged-Ring Compounds / Q000494:pharmacology*; D003248:Constipation / Q000139:chemically induced; D003516:Cycloparaffins / Q000494:pharmacology*; D004597:Electroshock; D006168:Guinea Pigs; D000882:Haplorhini; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D007082:Ileum / Q000187:drug effects; D066298:In Vitro Techniques; D008253:Macaca mulatta; D008297:Male; D051379:Mice; D009020:Morphine / Q000037:antagonists & inhibitors; D009043:Motor Activity / Q000187:drug effects; D009119:Muscle Contraction / Q000187:drug effects; D009270:Naloxone / Q000494:pharmacology; D009292:Narcotic Antagonists / Q000494:pharmacology; D051381:Rats; D011930:Reaction Time / Q000187:drug effects; D012119:Respiration / Q000187:drug effects; D012890:Sleep / Q000187:drug effects; D013375:Substance Withdrawal Syndrome / Q000139:chemically induced; D019966:Substance-Related Disorders / Q000209:etiology
chemical_list: D000700:Analgesics; D001952:Bridged-Ring Compounds; D003516:Cycloparaffins; D009292:Narcotic Antagonists; D009270:Naloxone; D009020:Morphine