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Acetaldehyde self-administration by a two-bottle choice paradigm: consequences on emotional reactivity, spatial
Fulvio Plescia1, Anna Brancato2, Marco Venniro3
1Department of Sciences for Health Promotion and Mother and Child Care "Giuseppe D'Alessandro", University of Palermo, Via del Vespro 133, 90127 Palermo, Italy.
Alcohol (Fayetteville, N.Y.)
|February 1, 2015
Summary
Rats developed acetaldehyde drinking habits, showing increased brain acetaldehyde levels and anxiogenic responses. This behavior correlated with enhanced cognitive flexibility and spatial orientation, highlighting acetaldehyde
Area of Science:
- Neuroscience
- Pharmacology
- Behavioral Science
Background:
- Acetaldehyde, an alcohol metabolite, produces pharmacological effects distinct from alcohol.
- Its role in oral intake and behavior remains under-investigated.
Purpose of the Study:
- To investigate the acquisition and maintenance of acetaldehyde drinking behavior in rats.
- To assess the behavioral and cognitive consequences of chronic acetaldehyde intake.
Main Methods:
- Adult male rats were offered a two-bottle choice between water and acetaldehyde solutions (0.9%-3.2%) for 8 weeks.
- Behavioral tests included open-field, elevated-plus maze, and Morris water maze.
- Brain acetaldehyde levels were measured post-paradigm.
Main Results:
- Rats established stable drinking patterns, with higher concentrations leading to "peaks and drops" in intake.
- Brain acetaldehyde levels increased in drinking rats.
- Acetaldehyde intake induced anxiety but improved cognitive flexibility and spatial orientation.
Conclusions:
- Acetaldehyde is a centrally active metabolite influencing behavior.
- Oral acetaldehyde intake can lead to adaptive behavioral changes in response to stress.
Keywords:
Acetaldehyde in the brainAnxiety-like behaviorEmotional reactivitySpatial learning and memoryTwo-bottle choice paradigm
