Increased drinking during withdrawal from intermittent ethanol exposure is blocked by the CRF receptor antagonist D-Phe-CRF(12-41)

Deborah (Deb) Finn, Christopher Snelling, Andrea M. Fretwell, Michelle A. Tanchuck, Lisa Underwood, Maury Cole, John Jr Crabbe, Amanda J. Roberts

Research output: Contribution to journalArticle

144 Citations (Scopus)

Abstract

Background: Studies in rodents have determined that intermittent exposure to alcohol vapor can increase subsequent ethanol self-administration, measured with operant and 2-bottle choice procedures. Two key procedural factors in demonstrating increased alcohol intake are the establishment of stable alcohol self-administration before alcohol vapor exposure and the number of bouts of intermittent vapor exposure. The present studies provide additional behavioral validation and initial pharmacological validation of this withdrawal-associated drinking procedure. Methods: Studies at 2 different sites (Portland and Scripps) examined the effect of intermittent ethanol vapor exposure (3 cycles of 16 hours of ethanol vapor+8 hours air) on 2-hour limited access ethanol preference drinking in male C57BL/6 mice. Separate studies tested 10 or 15% (v/v) ethanol concentrations, and measured intake during the circadian dark. In one study, before measuring ethanol intake after the second bout of intermittent vapor exposure, mice were tested for handling-induced convulsions (HICs) indicative of physical dependence on ethanol. In a second study, the effect of bilateral infusions of the corticotropin-releasing factor (CRF) receptor antagonist d-Phe-CRF(12-41) (0.25 μg/0.5 μL) into the central nucleus of the amygdala (CeA) on ethanol intake was compared in vapor-exposed animals and air controls. Results: Intermittent ethanol vapor exposure significantly increased ethanol intake by 30 to 40%, and the mice had higher blood ethanol concentrations than controls. Intra-amygdala infusions of d-Phe-CRF(12-41) significantly decreased the withdrawal-associated increase in ethanol intake without altering ethanol consumption in controls. Following the second bout of intermittent vapor exposure, mice exhibited an increase in HICs, when compared with their own baseline scores or the air controls. Conclusions: Intermittent alcohol vapor exposure significantly increased alcohol intake and produced signs of physical dependence. Initial pharmacological studies suggest that manipulation of the CRF system in the CeA can block this increased alcohol intake.

Original languageEnglish (US)
Pages (from-to)939-949
Number of pages11
JournalAlcoholism: Clinical and Experimental Research
Volume31
Issue number6
DOIs
StatePublished - Jun 2007

Fingerprint

Corticotropin-Releasing Hormone Receptors
Corticotropin-Releasing Hormone
Drinking
Ethanol
Vapors
Alcohols
Self Administration
Air
Seizures
Pharmacology
Bottles
Amygdala
Inbred C57BL Mouse

Keywords

  • Alcohol Intake
  • Alcohol Vapor
  • Amygdala
  • C57BL/6 Mice
  • Dependence

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Toxicology

Cite this

Increased drinking during withdrawal from intermittent ethanol exposure is blocked by the CRF receptor antagonist D-Phe-CRF(12-41). / Finn, Deborah (Deb); Snelling, Christopher; Fretwell, Andrea M.; Tanchuck, Michelle A.; Underwood, Lisa; Cole, Maury; Crabbe, John Jr; Roberts, Amanda J.

In: Alcoholism: Clinical and Experimental Research, Vol. 31, No. 6, 06.2007, p. 939-949.

Research output: Contribution to journalArticle

Finn, Deborah (Deb) ; Snelling, Christopher ; Fretwell, Andrea M. ; Tanchuck, Michelle A. ; Underwood, Lisa ; Cole, Maury ; Crabbe, John Jr ; Roberts, Amanda J. / Increased drinking during withdrawal from intermittent ethanol exposure is blocked by the CRF receptor antagonist D-Phe-CRF(12-41). In: Alcoholism: Clinical and Experimental Research. 2007 ; Vol. 31, No. 6. pp. 939-949.
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abstract = "Background: Studies in rodents have determined that intermittent exposure to alcohol vapor can increase subsequent ethanol self-administration, measured with operant and 2-bottle choice procedures. Two key procedural factors in demonstrating increased alcohol intake are the establishment of stable alcohol self-administration before alcohol vapor exposure and the number of bouts of intermittent vapor exposure. The present studies provide additional behavioral validation and initial pharmacological validation of this withdrawal-associated drinking procedure. Methods: Studies at 2 different sites (Portland and Scripps) examined the effect of intermittent ethanol vapor exposure (3 cycles of 16 hours of ethanol vapor+8 hours air) on 2-hour limited access ethanol preference drinking in male C57BL/6 mice. Separate studies tested 10 or 15{\%} (v/v) ethanol concentrations, and measured intake during the circadian dark. In one study, before measuring ethanol intake after the second bout of intermittent vapor exposure, mice were tested for handling-induced convulsions (HICs) indicative of physical dependence on ethanol. In a second study, the effect of bilateral infusions of the corticotropin-releasing factor (CRF) receptor antagonist d-Phe-CRF(12-41) (0.25 μg/0.5 μL) into the central nucleus of the amygdala (CeA) on ethanol intake was compared in vapor-exposed animals and air controls. Results: Intermittent ethanol vapor exposure significantly increased ethanol intake by 30 to 40{\%}, and the mice had higher blood ethanol concentrations than controls. Intra-amygdala infusions of d-Phe-CRF(12-41) significantly decreased the withdrawal-associated increase in ethanol intake without altering ethanol consumption in controls. Following the second bout of intermittent vapor exposure, mice exhibited an increase in HICs, when compared with their own baseline scores or the air controls. Conclusions: Intermittent alcohol vapor exposure significantly increased alcohol intake and produced signs of physical dependence. Initial pharmacological studies suggest that manipulation of the CRF system in the CeA can block this increased alcohol intake.",
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T1 - Increased drinking during withdrawal from intermittent ethanol exposure is blocked by the CRF receptor antagonist D-Phe-CRF(12-41)

AU - Finn, Deborah (Deb)

AU - Snelling, Christopher

AU - Fretwell, Andrea M.

AU - Tanchuck, Michelle A.

AU - Underwood, Lisa

AU - Cole, Maury

AU - Crabbe, John Jr

AU - Roberts, Amanda J.

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N2 - Background: Studies in rodents have determined that intermittent exposure to alcohol vapor can increase subsequent ethanol self-administration, measured with operant and 2-bottle choice procedures. Two key procedural factors in demonstrating increased alcohol intake are the establishment of stable alcohol self-administration before alcohol vapor exposure and the number of bouts of intermittent vapor exposure. The present studies provide additional behavioral validation and initial pharmacological validation of this withdrawal-associated drinking procedure. Methods: Studies at 2 different sites (Portland and Scripps) examined the effect of intermittent ethanol vapor exposure (3 cycles of 16 hours of ethanol vapor+8 hours air) on 2-hour limited access ethanol preference drinking in male C57BL/6 mice. Separate studies tested 10 or 15% (v/v) ethanol concentrations, and measured intake during the circadian dark. In one study, before measuring ethanol intake after the second bout of intermittent vapor exposure, mice were tested for handling-induced convulsions (HICs) indicative of physical dependence on ethanol. In a second study, the effect of bilateral infusions of the corticotropin-releasing factor (CRF) receptor antagonist d-Phe-CRF(12-41) (0.25 μg/0.5 μL) into the central nucleus of the amygdala (CeA) on ethanol intake was compared in vapor-exposed animals and air controls. Results: Intermittent ethanol vapor exposure significantly increased ethanol intake by 30 to 40%, and the mice had higher blood ethanol concentrations than controls. Intra-amygdala infusions of d-Phe-CRF(12-41) significantly decreased the withdrawal-associated increase in ethanol intake without altering ethanol consumption in controls. Following the second bout of intermittent vapor exposure, mice exhibited an increase in HICs, when compared with their own baseline scores or the air controls. Conclusions: Intermittent alcohol vapor exposure significantly increased alcohol intake and produced signs of physical dependence. Initial pharmacological studies suggest that manipulation of the CRF system in the CeA can block this increased alcohol intake.

AB - Background: Studies in rodents have determined that intermittent exposure to alcohol vapor can increase subsequent ethanol self-administration, measured with operant and 2-bottle choice procedures. Two key procedural factors in demonstrating increased alcohol intake are the establishment of stable alcohol self-administration before alcohol vapor exposure and the number of bouts of intermittent vapor exposure. The present studies provide additional behavioral validation and initial pharmacological validation of this withdrawal-associated drinking procedure. Methods: Studies at 2 different sites (Portland and Scripps) examined the effect of intermittent ethanol vapor exposure (3 cycles of 16 hours of ethanol vapor+8 hours air) on 2-hour limited access ethanol preference drinking in male C57BL/6 mice. Separate studies tested 10 or 15% (v/v) ethanol concentrations, and measured intake during the circadian dark. In one study, before measuring ethanol intake after the second bout of intermittent vapor exposure, mice were tested for handling-induced convulsions (HICs) indicative of physical dependence on ethanol. In a second study, the effect of bilateral infusions of the corticotropin-releasing factor (CRF) receptor antagonist d-Phe-CRF(12-41) (0.25 μg/0.5 μL) into the central nucleus of the amygdala (CeA) on ethanol intake was compared in vapor-exposed animals and air controls. Results: Intermittent ethanol vapor exposure significantly increased ethanol intake by 30 to 40%, and the mice had higher blood ethanol concentrations than controls. Intra-amygdala infusions of d-Phe-CRF(12-41) significantly decreased the withdrawal-associated increase in ethanol intake without altering ethanol consumption in controls. Following the second bout of intermittent vapor exposure, mice exhibited an increase in HICs, when compared with their own baseline scores or the air controls. Conclusions: Intermittent alcohol vapor exposure significantly increased alcohol intake and produced signs of physical dependence. Initial pharmacological studies suggest that manipulation of the CRF system in the CeA can block this increased alcohol intake.

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KW - Dependence

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