Nicotine metabolism and addiction among adolescent smokers.
- Authors
- Rubinstein, Mark L; Shiffman, Saul; Moscicki, Anna-Barbara; Rait, Michelle A; Sen, Saunak; Benowitz, Neal L
- Year
- 2013
- Journal
- Addiction (Abingdon, England)
- PMID
- 22823143
- DOI
- 10.1111/j.1360-0443.2012.04026.x
- PMCID
- PMC3504133
AIMS: The purpose of this study was to determine the association between the nicotine metabolic rate and smoking behavior, including addiction, in adolescent smokers. DESIGN: Baseline data from a prospective study of adolescent smoking behaviors and nicotine metabolism. SETTING: The setting was an out-patient university hospital in San Francisco. PARTICIPANTS: Adolescent smokers (n = 164) aged 13-17 years old. MEASUREMENTS: Participants completed self-report measures of smoking behavior and nicotine dependence (modified Fagerström Tolerance Questionnaire: mFTQ). The nicotine metabolite ratio (NMR), a phenotypic marker of the rate of nicotine metabolism, was calculated using the ratio of concentrations of deuterium-labeled 3'-hydroxycotinine to cotinine-d(4) . FINDINGS: Participants reported smoking a mean of 2.86 cigarettes per day (CPD) [median = 1.78, standard deviation (SD) = 3.35] for 1.37 years (median = 1.0, SD = 1.36). Results from multivariate analyses accounting for age, race/ethnicity, gender and duration of smoking indicated that slower metabolizers smoked more CPD than faster metabolizers (the NMR was inversely related to CPD; P = 0.02). Slower metabolizers also showed greater dependence on the mFTQ (NMR was negatively associated with the mFTQ; P = 0.02). CONCLUSIONS: In adolescence, slower clearance of nicotine may be associated with greater levels of addiction, perhaps mediated by a greater number of cigarettes smoked.
Saliva 3HC-d4/cotinine-d4 ratios in the study sample.
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