Variability in initial nicotine sensitivity due to sex, history of other drug use, and parental smoking.
Initial sensitivity to nicotine's effects during early exposure to tobacco may relate to dependence vulnerability. We examined the association of initial nicotine sensitivity with individual difference factors of sex, other drug use history (i.e. cross-tolerance or cross-sensitization), and parental smoking status in young adult nonsmokers (N=131). Participants engaged in 4 sessions, the first 3 to assess the dose-response effects of nasal spray nicotine (0, 5, 10 microg/kg) on rewarding, mood, physiological, sensory processing, and performance effects, and the fourth to assess nicotine reinforcement using a choice procedure. Men had greater initial sensitivity than women to some self-reported effects of nicotine related to reward and incentive salience and to impairment in sensory processing, but men and women did not differ on most other effects. Prior marijuana use was associated with greater nicotine reward, nicotine reinforcement was greater in men versus women among those with prior marijuana use, and having parents who smoked was related to increased incentive salience. However, history of other drug use and parental smoking were not otherwise associated with initial nicotine sensitivity. These findings warrant replication with other methods of nicotine administration, especially cigarette smoking, and in more diverse samples of subjects naïve to nicotine. Yet, they suggest that sex differences in initial sensitivity to nicotine reward occur before the onset of dependence. They also suggest that parental smoking may not increase risk of nicotine dependence in offspring by altering initial nicotine sensitivity, and that cross-tolerance between other drugs and nicotine may not be robust in humans.
Perkins
Kenneth A
KA
Department of Psychiatry, University of Pittsburgh School of Medicine, 3811 O'Hara Street, Pittsburgh, PA 15213, USA. perkinska@upmc.edu
Coddington
Sarah B
SB
Karelitz
Joshua L
JL
Jetton
Christopher
C
Scott
John A
JA
Wilson
Annette S
AS
Lerman
Caryn
C
D000281:Administration, Intranasal; D000328:Adult; D000339:Affect / Q000187:drug effects; D001794:Blood Pressure / Q000187:drug effects; D003215:Conditioning, Eyelid / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D004361:Drug Tolerance; D004493:Education; D005006:Ethnicity; D005260:Female; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D017533:Marital Status; D009538:Nicotine / Q000008:administration & dosage / Q000494:pharmacology*; D018722:Nicotinic Agonists / Q000008:administration & dosage / Q000494:pharmacology*; D010290:Parents; D011597:Psychomotor Performance / Q000187:drug effects; D012201:Reward; D018570:Risk Assessment; D012737:Sex Factors; D012907:Smoking / Q000453:epidemiology*; D012959:Socioeconomic Factors; D019966:Substance-Related Disorders / Q000453:epidemiology*; D055815:Young Adult
D018722:Nicotinic Agonists; D009538:Nicotine
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