title: Interactions between phencyclidine and delta 9-tetrahydrocannabinol in mice following smoke exposure.
abstract: The behavioral and pharmacological interactions between delta 9-tetrahydrocannabinol (delta 9-THC) and phencyclidine (PCP) were studied following coadministration of the drugs in smoke to mice. While delta 9-THC (25, 50 or 100 mg/cigarette) had little effect on spontaneous motor activity, all doses attenuated the hyperactivity elicited by PCP X HCl (25 and 50 mg/cigarette). delta 9-THC produced a dose-related hypothermia. PCP X HCl (50 mg/cigarette) had no effect on body temperature but enhanced hypothermia when combined with 25 mg of delta 9-THC. delta 9-THC (100 mg/cigarette) had no effect on the biodisposition of 3H-PCP and its pyrolytic product, 3H-phenylcyclohexene (3H-PC), when examined immediately after 3H-PCP X HCl (50 mg/ cigarette) exposure. At 30 min, brain, liver, lung and plasma contained higher concentrations of 3H-PC and fat and plasma contained lower concentrations of 3H-PCP in the mice exposed to both drugs compared to 3H-PCP X HCl alone. It appears, therefore, that delta 9-THC has the potential for altering the behavioral, pharmacological and pharmacokinetic sequelae of PCP abuse.
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism; D000818:Animals; D001831:Body Temperature / Q000187:drug effects; D001921:Brain / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D013759:Dronabinol / Q000378:metabolism*; D008099:Liver / Q000378:metabolism; D008168:Lung / Q000378:metabolism; D051379:Mice; D009043:Motor Activity / Q000187:drug effects; D010622:Phencyclidine / Q000378:metabolism*; D012906:Smoke
chemical_list: D012906:Smoke; D013759:Dronabinol; D010622:Phencyclidine