Journal
NEUROSCIENCE LETTERS
Volume 703, Issue -, Pages 145-148Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2019.03.024
Keywords
Nicotine; Metabolites; Cotinine; Conditioned place preference; Planarians
Categories
Funding
- South Dakota Research and Scholarship Support Fund
- Scholarly Excellence Fund
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While the psychoactive stimulant nicotine has been the subject of extensive research, considerably less attention has focused on other compounds found in either tobacco smoke or that are nicotine metabolites. Recent papers have suggested that some of the compounds in question may either alter nicotine's effects or have reinforcing properties themselves, although they would only be experienced after consumption of tobacco. The potential for these compounds to function as reinforcers or to potentiate the reinforcing properties of nicotine merits investigation. To pursue this line of inquiry, we examined cotinine in a planarian model of environmental place preference. In the present study, planarians demonstrated that the compound cotinine, which is present in tobacco smoke, and is also the principal nicotine metabolite, establishes a conditioned place preference. These data represent the first ever demonstration that cotinine will establish a conditioned place preference in planarians and possibly contribute to the addictive properties of nicotine.
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