, Volume 197, Issue 3, pp 409–419

The effects of nicotine on ethanol-induced conditioned taste aversions in Long–Evans rats

  • Jennifer A. Rinker
  • Gregory D. Busse
  • Peter G. Roma
  • Scott A. Chen
  • Christina S. Barr
  • Anthony L. Riley
Original Investigation



Overall drug acceptability is thought to be a function of the balance between its rewarding and aversive effects, the latter of which is reportedly affected by polydrug use.


Given that nicotine and alcohol are commonly co-used, the present experiments sought to assess nicotine’s impact on ethanol’s aversive effects within a conditioned taste aversion design.

Materials and methods

Experiment 1 examined various doses of nicotine (0, 0.4, 0.8, 1.2 mg/kg) to determine a behaviorally active dose, and experiment 2 examined various doses of ethanol (0, 0.5, 1.0, 1.5 g/kg) to determine a dose that produced intermediate aversions. Experiment 3 then examined the aversive effects of nicotine (0.8 mg/kg) and ethanol (1.0 g/kg) alone and in combination. Additionally, nicotine’s effects on blood alcohol concentrations (BAC) and ethanol-induced hypothermia were examined.


Nicotine and ethanol combined produced aversions significantly greater than those produced by either drug alone or the summed aversive effects of the individual compounds. These effects were unrelated to changes in BAC, but nicotine and ethanol combined produced a prolonged hypothermic effect which may contribute to the increased aversions induced by the combination.


These data demonstrate that nicotine may interact with ethanol, increasing ethanol’s aversive effects. Although the rewarding effects of concurrently administered nicotine and ethanol were not assessed, these data do indicate that the reported high incidence of nicotine and ethanol co-use is unlikely due to reductions in the aversiveness of ethanol with concurrently administered nicotine. It is more likely attributable to nicotine-related changes in ethanol’s rewarding effects.


Nicotine Ethanol Drug interactions Polydrug use Drug acceptability Conditioned taste aversion Hypothermia Blood alcohol Rats Female 


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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Jennifer A. Rinker
    • 1
  • Gregory D. Busse
    • 1
  • Peter G. Roma
    • 1
  • Scott A. Chen
    • 2
  • Christina S. Barr
    • 2
  • Anthony L. Riley
    • 1
  1. 1.Psychopharmacology Laboratory, Department of PsychologyAmerican UniversityWashingtonUSA
  2. 2.Laboratory of Clinical and Translational Studies, Section on Primate StudiesNational Institute on Alcohol Abuse and AlcoholismPoolesvilleUSA

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