Different effects of ethylketocyclazocine on phencyclidine- and N-allylnormetazocine-induced stereotyped behaviors in rats.
The effects of ethylketocyclazocine (EKC) on the stereotyped behaviors induced by intraperitoneal injection of phencyclidine (PCP) or N-allylnormetazocine (SKF 10,047) were examined. EKC markedly antagonized PCP-induced stereotyped behaviors such as sniffing, head-weaving, turning and backpedalling. On the other hand, EKC failed to antagonize SKF 10,047-induced stereotyped behaviors, which are PCP-like stereotyped behaviors, except sniffing and head-weaving at 0-15 min after the SKF 10,047 injection. PCP-induced turning and backpedalling were potentiated by pretreatment with SKF 10,047, while PCP-induced sniffing and head-weaving were not. EKC failed to affect the enhancing effect of SKF 10,047 on PCP-induced turning and backpedalling. These results suggest that part of the PCP- and SKF 10,047-induced stereotypy may be mediated by different neuronal mechanisms.
D000701:Analgesics, Opioid / Q000494:pharmacology*; D000818:Animals; D003496:Cyclazocine / Q000031:analogs & derivatives* / Q000494:pharmacology; D016314:Ethylketocyclazocine; D008297:Male; D010620:Phenazocine / Q000031:analogs & derivatives* / Q000494:pharmacology; D010622:Phencyclidine / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains; D013239:Stereotyped Behavior / Q000187:drug effects*
D000701:Analgesics, Opioid; D016314:Ethylketocyclazocine; C012134:SK&F 10047; D010620:Phenazocine; D010622:Phencyclidine; D003496:Cyclazocine