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Alcoholism (alcohol dependence) is characterized by a compulsion to seek and ingest alcohol (ethanol), loss of control over intake, and the emergence of a negative emotional state during withdrawal. Animal models are critical in promoting our knowledge of the neurobiological mechanisms underlying alcohol dependence. Here, we review the studies involving operant alcohol self-administration in rat models...
A functional connection between the circadian timing system and alcohol consumption is suggested by multiple lines of converging evidence. Ethanol consumption perturbs physiological rhythms in hormone secretion, sleep, and body temperature; and conversely, genetic and environmental perturbations of the circadian system can alter alcohol intake. A fundamental property of the circadian pacemaker, the...
One of the most critical attributes of chronic abstinence from alcohol is a state of anxiety, which can lead to mood disturbances and negative affect that can last for months or even years in alcoholics. Within hours after their final exposure to ethanol in experimental conditions, laboratory animals also exhibit an anxiety-like state. This state is accompanied by an enhanced stress response and can...
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