title: Consequence of boar edible tissue consumption on urinary profiles of nandrolone metabolites. II. Identification and quantification of 19-norsteroids responsible for 19-norandrosterone and 19-noretiocholanolone excretion in human urine.
abstract: In previous work (Le Bizec et al., Rapid Commun. Mass Spectrom. 2000; 14: 1058), it was demonstrated that a boar meal intake could lead to possible false accusations of abuse of 17beta-nortestosterone in antidoping control. The aim of the present study was to identify and quantify endogenous 19-norsteroids in boar edible tissue at concentrations that can alter the steroid urinary profile in humans, and lead to excretion of 19-norandrosterone (19-NA) and 19-noretiocholanolone (19-NE). The samples were analysed in two laboratories. The methodologies used for extraction and detection (GC/MS(EI) and LC/MS/MS(APCI+)) are compared and discussed. 19-Norandrostenedione (NAED), 17beta- and 17alpha-nortestosterone (bNT, aNT), and 17beta- and 17alpha-testosterone (bT, aT) were quantified. The largest concentrations of NAED and bNT were observed in testicles (83 and 172 microg/kg), liver (17 and 63 microg/kg) and kidney (45 and 38 microg/kg). A correlation between the bNT and NAED content of a typical meal prepared with boar parts and the excreted concentrations of 19-NA and 19-NE in human urine was demonstrated.
authors.affiliation: Laboratory of Chemical Analysis, Ghent University, Faculty of Veterinary Medicine, Salisburylaan 133, B-9820 Merelbeke, Belgium. Katia.DeWasch@rug.ac.be
authors.forename: K
authors.initials: K
authors.lastname: De Wasch
authors.forename: B
authors.initials: B
authors.lastname: Le Bizec
authors.forename: H
authors.initials: H
authors.lastname: De Brabander
authors.forename: F
authors.initials: F
authors.lastname: André
authors.forename: S
authors.initials: S
authors.lastname: Impens
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004044:Dietary Proteins; D004962:Estranes / Q000652:urine*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D013058:Mass Spectrometry / Q000379:methods; D008460:Meat; D009277:Nandrolone / Q000378:metabolism*; D009654:Norsteroids / Q000652:urine*; D013552:Swine
chemical_list: D004044:Dietary Proteins; D004962:Estranes; D009654:Norsteroids; C036015:19-norandrosterone; D009277:Nandrolone