title: Differential actions of d- and 1-amphetamine on the metabolism of 3H-norepinephrine in rat brain.
abstract: Approximately equieffective doses of d- and l-amphetamine, using suppression of operant fixed-ratio responding for food reinforcement as the determinant of potency, were compared for their ability to alter the disposition of the major and minor metabolites of NE in push-pull perfusates from rat brain lateral ventricle. While 3 mg d-amphetamine/kg and 6 mg l-amphetamine/kg both increased total 3H and the relative amounts of the minor metabolites 3H-normetanephrine and 3H-dihydroxymandelic acid, only 1-amphetamine caused a significant increase in the major 3H-NE metabolite, methoxyhydroxyphenylethylene-glycol. The data is discussed in relation to the abilities of the isomers of amphetamine to stereoselectively interact with noradrenergic neurons at doses that produce similar effects upon operant behavior.
mesh_terms: D000661:Amphetamine / Q000494:pharmacology; D000662:Amphetamines / Q000494:pharmacology*; D000818:Animals; D001921:Brain / Q000187:drug effects / Q000378:metabolism*; D003216:Conditioning, Operant / Q000187:drug effects; D003913:Dextroamphetamine / Q000494:pharmacology; D007536:Isomerism; D008734:Methoxyhydroxyphenylglycol / Q000378:metabolism; D009638:Norepinephrine / Q000378:metabolism*; D009647:Normetanephrine / Q000378:metabolism; D051381:Rats; D013997:Time Factors
chemical_list: D000662:Amphetamines; D009647:Normetanephrine; D008734:Methoxyhydroxyphenylglycol; D000661:Amphetamine; D003913:Dextroamphetamine; D009638:Norepinephrine