title: Pharmacokinetics of N'-nitrosonornicotine and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone in laboratory animals.
abstract: The pharmacokinetics of N'-nitrosonornicotine (NNN) and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) in the Syrian golden hamster, the CD-1 mouse, and the baboon were compared to the pharmacokinetics in the Fischer rat. The formation and biological half-life of 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL), the major metabolite of NNK, was also studied in these animal species. The biological half-life of NNN in these 4 animal species ranged from 0.24 h to 3.06 h, that of NNK from 0.21 h to 0.43 h and NNAL from 0.48 h to 2.9 h. The pharmacokinetic data obtained in the baboon suggest that treatment with NNN and NNK causes an enzyme induction which accelerates the rate of elimination of these compounds.
mesh_terms: D000818:Animals; D002273:Carcinogens / Q000378:metabolism*; D006224:Cricetinae; D006207:Half-Life; D007700:Kinetics; D008297:Male; D008647:Mesocricetus; D051379:Mice; D008815:Mice, Inbred Strains; D009602:Nitrosamines / Q000378:metabolism*; D010215:Papio; D051381:Rats; D011916:Rats, Inbred F344; D013045:Species Specificity
chemical_list: D002273:Carcinogens; D009602:Nitrosamines; C016583:4-(N-methyl-N-nitrosamino)-1-(3-pyridyl)-1-butanone; C008655:N'-nitrosonornicotine