| The potency of fluvoxamine to reduce ethanol self-administration decreases with concurrent availability of food. | |
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MedLine Citation:
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PMID: 22205211 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The selective serotonin reuptake inhibitor fluvoxamine reduces responding for ethanol at lower doses than responding for food when each is available in separate components or separate groups of rats. However, when both are available concurrently and deliveries earned per session are equal, this apparent selectivity inverts and food-maintained behavior is more sensitive than ethanol-maintained behavior to rate-decreasing effects of fluvoxamine. Here, we investigated further the impact that concurrent access to both food and ethanol has on the potency of fluvoxamine. Fluvoxamine (5.6-17.8 mg/kg) potency was assessed under conditions in which food and ethanol were available concurrently and response rates were equal [average variable intervals (VIs) 405 and 14 s for food and ethanol, respectively], as well as when density of food delivery was increased (average VI 60 s for food and VI 14 s for ethanol). The potency of fluvoxamine was also determined when only ethanol was available (food extinction and average VI 14 s for ethanol) and under multiple VIs (VI 30 s for food and ethanol) wherein either food or ethanol was the only programmed reinforcement available during each component. Fluvoxamine was less potent at decreasing ethanol self-administration when food was available concurrently {ED50 [95% confidence limit (CL): 8.2 (6.5-10.3) and 10.7 (7.9-14.4)]} versus when ethanol was available in isolation [ED50: 4.0 (2.7-5.9) and 5.1 (4.3-6.0)]. Effects on food were similar under each condition in which food was available. The results demonstrate that the potency of fluvoxamine in reducing ethanol-maintained behavior depends on whether ethanol is available in isolation or in the context of concurrently scheduled food reinforcement. |
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Authors:
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Brett C Ginsburg; Jonathan W Pinkston; Richard J Lamb |
Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: Behavioural pharmacology Volume: 23 ISSN: 1473-5849 ISO Abbreviation: Behav Pharmacol Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-03-13 Completed Date: 2012-07-16 Revised Date: 2013-05-22 |
Medline Journal Info:
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Nlm Unique ID: 9013016 Medline TA: Behav Pharmacol Country: England |
Other Details:
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Languages: eng Pagination: 134-42 Citation Subset: IM |
Affiliation:
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Department of Psychiatry, Division of Alcohol and Drug Addiction, The University of Texas Health Science Center at San Antonio, San Antonio 78229, USA. ginsburg@uthscsa.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Conditioning, Operant / drug effects* Dose-Response Relationship, Drug Ethanol / administration & dosage, antagonists & inhibitors*, pharmacology Extinction, Psychological / drug effects Fluvoxamine / pharmacology* Food* Male Rats Rats, Inbred Lew Reinforcement (Psychology)* Reinforcement Schedule Self Administration Serotonin Uptake Inhibitors / pharmacology* |
| Grant Support | |
ID/Acronym/Agency:
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AA012337/AA/NIAAA NIH HHS; AA015993/AA/NIAAA NIH HHS; R01 AA012337-05/AA/NIAAA NIH HHS; R03 AA015993-01A2/AA/NIAAA NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Serotonin Uptake Inhibitors; 54739-18-3/Fluvoxamine; 64-17-5/Ethanol |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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