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Addiction-like behavior in Drosophila.

Anita V Devineni, Ulrike Heberlein

    Communicative & Integrative Biology
    |August 28, 2010
    PubMed
    Summary

    Fruit flies exhibit alcohol addiction behaviors, including increased consumption and relapse, in a new self-administration model. This discovery opens avenues for genetic research into alcohol addiction mechanisms.

    Area of Science:

    • Neuroscience
    • Genetics
    • Behavioral Science

    Background:

    • Alcohol abuse is a significant global health issue with complex genetic underpinnings.
    • While Drosophila melanogaster is a valuable model for alcohol's acute and chronic effects, it has lacked models for complex addiction behaviors like self-administration.

    Purpose of the Study:

    • To establish and validate a novel Drosophila model for characterizing ethanol consumption and preference.
    • To investigate if this model recapitulates key features of alcohol addiction.

    Main Methods:

    • Development of a paradigm to measure ethanol consumption and preference in flies.
    • Assessment of ethanol intake over time, concentration-dependent consumption, response to aversive stimuli, and relapse after deprivation.
    Keywords:
    Drosophilaaddictionethanolfeedingpreferencerelapse

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    Main Results:

    • Flies demonstrated a clear preference for ethanol-containing food over standard food.
    • This preference included increased consumption over time, intake at pharmacologically relevant concentrations, overcoming aversive stimuli for ethanol, and relapse after withdrawal.

    Conclusions:

    • Ethanol preference in Drosophila provides a robust model for studying alcohol addiction.
    • The identified 'krasavietz' mutant, showing reduced ethanol preference, offers a starting point for uncovering genetic mechanisms of alcohol addiction.