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Addiction Biology
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Addiction Biology
Article . 2009 . Peer-reviewed
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PRECLINICAL STUDY: Effects of concurrent access to multiple ethanol concentrations and repeated deprivations on alcohol intake of high‐alcohol‐drinking (HAD) rats

Authors: Richard L. Bell; Lawrence Lumeng; Kelly A. Kuc; James M. Murphy; William J. McBride; Zachary A. Rodd;

PRECLINICAL STUDY: Effects of concurrent access to multiple ethanol concentrations and repeated deprivations on alcohol intake of high‐alcohol‐drinking (HAD) rats

Abstract

ABSTRACTHigh‐alcohol‐drinking rats, given access to 10% ethanol, expressed an alcohol deprivation effect (ADE) only after multiple deprivations. In alcohol‐preferring (P) rats, concurrent access to multiple ethanol concentrations combined with repeated cycles of EtOH access and deprivation produced excessive ethanol drinking. The current study was undertaken to examine the effects of repeated alcohol deprivations with concurrent access to multiple concentrations of ethanol on ethanol intake of HAD replicate lines of rats. HAD‐1 and HAD‐2 rats received access to 10, 20 and 30% (v/v) ethanol for 6 weeks. Rats from each replicate line were assigned to: (1) a non‐deprived group; (2) a group initially deprived of ethanol for 2 weeks; or (3) a group initially deprived for 8 weeks. Following the restoration of the ethanol solutions, cycle of 2 weeks of ethanol exposure and 2 weeks of alcohol deprivation was repeated three times for a total of four deprivations. Following the initial ethanol deprivation period, deprived groups significantly increased ethanol intakes during the initial 24‐hour re‐exposure period. Multiple deprivations increased ethanol intakes, shifted preference to higher ethanol concentrations and prolonged the duration of the elevated ethanol intakes for up to 5 days. In addition, repeated deprivations increased ethanol intake in the first 2‐hour re‐exposure period as high as 5–7 g/kg (which are equivalent to amounts consumed in 24 hours by HAD rats), and produced blood ethanol levels in excess of 150 mg%. The results indicate that HAD rats exhibit ‘loss‐of‐control’ of alcohol drinking with repeated deprivations when multiple ethanol concentrations are available.

Keywords

Male, Behavior, Animal, Ethanol, Choice Behavior, Rats, Alcoholism, Disease Models, Animal, Animals, Food Deprivation

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
44
Average
Top 10%
Top 10%
bronze
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