Related Experiment Video
Updated: Aug 10, 2025
11:01
Moderate Prenatal Alcohol Exposure and Quantification of Social Behavior in Adult Rats
Published on: December 14, 2014
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Adolescent alcohol exposure alters threat avoidance in adulthood
Justine D Landin1, Lawrence Judson Chandler1
1Department of Neuroscience, Medical University of South Carolina, Charleston, SC, United States.
Frontiers in Behavioral Neuroscience
|February 10, 2023
Summary
Adolescent binge-like alcohol exposure did not affect initial learning of threat avoidance. However, males exposed to alcohol showed increased avoidance later, suggesting sex-specific impacts on survival behaviors.
Area of Science:
- Neuroscience
- Behavioral Science
- Toxicology
Background:
- Adolescent binge-like alcohol exposure can impair adult cognitive functions, including threat avoidance.
- Threat avoidance is crucial for survival and relies on executive functions.
- The impact of adolescent alcohol exposure on sex-specific threat avoidance behaviors is not well understood.
Purpose of the Study:
- To investigate the effects of adolescent intermittent ethanol (AIE) exposure on active avoidance behaviors in adult male and female rats.
- To determine if AIE exposure influences sex differences in threat avoidance and fear responses.
Main Methods:
- Adolescent male and female rats were exposed to intermittent ethanol vapor.
- In adulthood, rats were trained on a platform-mediated avoidance task involving a conditioned tone and foot-shock.
- A motivational conflict was introduced using an escape platform that blocked reward access.
Main Results:
- Both sexes learned active avoidance and freezing behaviors during training.
- AIE exposure did not affect initial avoidance or freezing acquisition.
- Adult female rats showed higher active avoidance and freezing than males.
- AIE-exposed male rats, but not females, exhibited significantly increased active avoidance compared to controls.
- Following extinction, AIE-exposed male rats also showed increased freezing compared to controls.
Conclusions:
- Female rats naturally display higher levels of active avoidance and freezing than males.
- Adolescent intermittent ethanol exposure has a sex-specific detrimental effect on adult threat avoidance behaviors in male rats.
- These findings highlight the long-term consequences of adolescent alcohol use on survival-related behavioral mechanisms.
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