NDLI: Alcohol drinking during adolescence increases consumptive responses to alcohol in adulthood in Wistar rats.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Amodeo, Leslie R. Kneiber, Diana Wills, Derek N. Ehlers, Cindy L.
Description	Country affiliation: United States Author Affiliation: Amodeo LR ( Department of Molecular and Cellular Neuroscience, The Scripps Research Institute, La Jolla, CA, 92037, USA.); Kneiber D ( Department of Molecular and Cellular Neuroscience, The Scripps Research Institute, La Jolla, CA, 92037, USA.); Wills DN ( Department of Molecular and Cellular Neuroscience, The Scripps Research Institute, La Jolla, CA, 92037, USA.); Ehlers CL ( Department of Molecular and Cellular Neuroscience, The Scripps Research Institute, La Jolla, CA, 92037, USA. Electronic address: cindye@scripps.edu.)
Abstract	Binge drinking and the onset of alcohol-use disorders usually peak during the transition between late adolescence and early adulthood, and early adolescent onset of alcohol consumption has been demonstrated to increase the risk for alcohol dependence in adulthood. In the present study, we describe an animal model of early adolescent alcohol consumption where animals drink unsweetened and unflavored ethanol in high concentrations (20%). Using this model, we investigated the influence of drinking on alcohol-related appetitive behavior and alcohol consumption levels in early adulthood. Further, we also sought to investigate whether differences in alcohol-related drinking behaviors were specific to exposure in adolescence versus exposure in adulthood. Male Wistar rats were given a 2-bottle choice between 20% ethanol and water in one group and between two water bottles in another group during their adolescence (Postnatal Day [PD] 26-59) to model voluntary drinking in adolescent humans. As young adults (PD85), rats were trained in a paradigm that provided free access to 20% alcohol for 25 min after completing up to a fixed-ratio (FR) 16 lever press response. A set of young adult male Wistar rats was exposed to the same paradigm using the same time course, beginning at PD92. The results indicate that adolescent exposure to alcohol increased consumption of alcohol in adulthood. Furthermore, when investigating differences between adolescent high and low drinkers in adulthood, high consumers continued to drink more alcohol, had fewer FR failures, and faster completion of FR schedules in adulthood, whereas the low consumers were no different from controls. Rats exposed to ethanol in young adulthood also increased future intake, but there were no differences in any other components of drinking behavior. Both adolescent- and adult-exposed rats did not exhibit an increase in lever pressing during the appetitive challenge session. These data indicate that adolescent and early adult alcohol exposure can increase consumptive aspects of drinking but that adolescent exposure may preferentially influence the motivation to drink.
File Format	HTM / HTML
ISSN	07418329
Journal	Alcohol
Volume Number	59
e-ISSN	18736823
Language	English
Publisher	Elsevier
Publisher Date	2017-03-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Substance-Related Disorders
Content Type	Text
Resource Type	Article
Subject	Neurology Medicine Behavioral Neuroscience Health (social science) Biochemistry Toxicology

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