Document Detail


The effects of gonadectomy on sex- and age-typical responses to novelty and ethanol-induced social inhibition in adult male and female Sprague-Dawley rats.
MedLine Citation:
PMID:  22036699     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Sex- and age-typical responses to ethanol and novel stimuli tend to emerge postpubertally, suggesting a potential organizational or activational role for pubertal hormones in these behaviors. To test this possibility, male and female rats were gonadectomized (GX) or received sham gonadectomy (SH) either prepubertally on postnatal day (P) 23 (early) or in adulthood on P70 (late). Animals were tested as adults for response to novelty and, on the following day, challenged with either saline or ethanol (1g/kg) prior to social interaction testing with an unfamiliar partner in a familiar setting under low light conditions. Gonadectomy did not influence ethanol-induced social inhibition in either sex, but instead altered the microstructure of social behavior, with GX animals exhibiting proportionally less time in social investigation and proportionally more time in contact behavior than SH animals, regardless of age of gonadectomy. The early sham surgical manipulation process itself influenced social motivation, with early SH surgery eliminating ethanol-induced decreases in social preference in both sexes. Response to novelty was unaffected by gonadectomy, but was suppressed in early compared to late SH manipulated animals. These results suggest that adult-typical responses to ethanol and novelty-directed behaviors are little influenced by gonadal hormones during puberty or in adulthood. However, the experience of surgical manipulation itself during development exerts behavioral and pharmacological consequences that last into adulthood.
Authors:
Courtney S Vetter-O'Hagen; Linda P Spear
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2011-10-21
Journal Detail:
Title:  Behavioural brain research     Volume:  227     ISSN:  1872-7549     ISO Abbreviation:  Behav. Brain Res.     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2011-12-19     Completed Date:  2012-04-23     Revised Date:  2013-05-23    
Medline Journal Info:
Nlm Unique ID:  8004872     Medline TA:  Behav Brain Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  224-32     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier B.V. All rights reserved.
Affiliation:
Center for Development and Behavioral Neuroscience, Developmental Exposure to Alcohol Research Center, Department of Psychology, Binghamton University, Binghamton, NY 13902-6000, USA. cvetter1@binghamton.edu
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MeSH Terms
Descriptor/Qualifier:
Analysis of Variance
Animals
Castration
Central Nervous System Depressants / pharmacology*
Estradiol / blood
Ethanol / pharmacology*
Exploratory Behavior / drug effects*
Female
Inhibition (Psychology)*
Male
Progesterone / blood
Radioimmunoassay
Rats
Rats, Sprague-Dawley
Sex Characteristics*
Social Behavior*
Testosterone / blood
Grant Support
ID/Acronym/Agency:
R01 AA017355-03/AA/NIAAA NIH HHS; R01 AA017355-04/AA/NIAAA NIH HHS; R01-AA017355/AA/NIAAA NIH HHS
Chemical
Reg. No./Substance:
0/Central Nervous System Depressants; 50-28-2/Estradiol; 57-83-0/Progesterone; 58-22-0/Testosterone; 64-17-5/Ethanol
Comments/Corrections

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