title: Analysis of N-n-propylnorapomorphine in plasma and tissue by capillary gas chromatography--electron-capture detection.
abstract: Capillary gas chromatography combined with electron-capture detection (GC-ECD) was applied to the detection and quantitation of N-n-propylnorapomorphine (NPA) and related compounds in serum and tissue using trifluoroacetyl (TFA) derivatives. The detection limits for NPA using GC-ECD of TFA derivative extend into the subpicogram level, but quantitation in serum was limited to levels of 100 ng/ml due to matrix interferences. The method was applied to the analysis of NPA in rat serum after administration of a moderate dose of the drug and was applied to the detection of NPA in rat brain after the peripheral administration of (-)10,11-methylenedioxy-N-n-propylnoraporphine (MDO-NPA). These results support previous proposals that MDO-NPA is a prodrug of NPA, which acts at cerebral dopamine-receptors.
mesh_terms: D000818:Animals; D001058:Apomorphine / Q000031:analogs & derivatives* / Q000032:analysis / Q000097:blood / Q000302:isolation & purification / Q000378:metabolism; D001921:Brain / Q000378:metabolism; D001923:Brain Chemistry; D002849:Chromatography, Gas; D051381:Rats; D011954:Receptors, Dopamine / Q000378:metabolism; D014269:Trifluoroacetic Acid
chemical_list: D011954:Receptors, Dopamine; C009074:N-n-propylnorapomorphine; C033829:10,11-methylenedioxy-N-propylnoraporphine; D014269:Trifluoroacetic Acid; D001058:Apomorphine