title: Sparteine oxidation polymorphism in Denmark.
abstract: Sparteine oxidation was polymorphic among 301 healthy Danish volunteers. Hence 22 subjects or 7.3% were phenotyped as poor metabolizers (PM) whereas 279 subjects were classified as extensive metabolizers (EM). The metabolic ratio (MR) between sparteine and 2- and 5-dehydrosparteine (% of dose) in 12 hrs urine ranged from 0.11-12.6 in EM and from 30-394 in PM. Urinary excretion of 2- and 5-dehydrosparteine also discriminated between PM and EM. Age, sex, and smoking habits did not influence the MR. This study confirms that sparteine is a useful probe drug in pharmacogenetic investigations.
mesh_terms: D003718:Denmark; D005260:Female; D006801:Humans; D008297:Male; D010084:Oxidation-Reduction; D010641:Phenotype; D011110:Polymorphism, Genetic; D013034:Sparteine / Q000378:metabolism* / Q000652:urine
chemical_list: D013034:Sparteine