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. 1990 Dec;48(6):641-51.
doi: 10.1038/clpt.1990.208.

Disposition of nicotine and eight metabolites in smokers and nonsmokers: identification in smokers of two metabolites that are longer lived than cotinine

G A Kyerematen  1 , M L Morgan, B Chattopadhyay, J D deBethizy, E S Vesell
Affiliations

Disposition of nicotine and eight metabolites in smokers and nonsmokers: identification in smokers of two metabolites that are longer lived than cotinine

G A Kyerematen et al. Clin Pharmacol Ther. 1990 Dec.

Abstract

The disposition of a single intravenous dose of 14C-nicotine was investigated in six cigarette smokers and six nonsmokers. Plasma and urinary elimination of both nicotine and cotinine was faster in smokers than in nonsmokers. In the urine of both smokers and nonsmokers, we identified nicotine and eight metabolites, including two new metabolites: metabolite A (3-hydroxycotinine glucuronide) and metabolite G (demethylcotinine delta 2',3'-enamine). Metabolites A and G were of particular interest because, in smokers, they both persisted longer than cotinine. This property renders them more sensitive than cotinine as potential indicators of passive exposure to cigarette smoke.

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Comment in

  • Nicotine metabolism in humans.
    Benowitz NL, Jacob P 3rd. Benowitz NL, et al. Clin Pharmacol Ther. 1991 Oct;50(4):462-4. doi: 10.1038/clpt.1991.165. Clin Pharmacol Ther. 1991. PMID: 1914383 No abstract available.

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