PMID: 41697Jan 1, 1979

Progress toward a voluntary oral consumption model of alcoholism

Drug and Alcohol Dependence
T K LiM B Waller


With the goal of obtaining a suitable animal model for voluntary oral consumption of ethanol, the investigators selectively bred lines of alcohol-preferring and alcohol-nonpreferring rats, with preference considered as a function of the concentration of ethanol ingested. Studies with these animals showed that drinking is voluntary and not contingent on caloric restriction; that they will work to obtain ethanol even when food and water are freely available, and in so doing, show psychological or behavioral tolerance; that the amount of ethanol voluntarily consumed approaches their apparent maximum capacity for ethanol elimination. This amount of ethanol was capable of altering brain neurotransmitter content, thus exerting a CNS pharmocologic effect. In addition, the rats will bar-press for intravenous administration of ethanol, and with prolonged, free-choice consumption, ethanol intake increases to as much as 12 g per kg body weight per day without producing behavioral deficits, suggesting the development of tolerance.


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Related Concepts

Behavior, Animal
Ethanol Measurement
Drug Tolerance
Withdrawal Symptoms
Weighing Patient
Alcohol Abuse

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