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Related Experiment Video

Updated: May 26, 2025

Modeling Alcohol Consumption in Rodents Using Two-Bottle Choice Home Cage Drinking and Microstructural Analysis
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Rapid estrogen signaling drives binge drinking.

Xavier J Maddern1, Lauren T Ursich1, Leigh C Walker1

  • 1Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia 3052; Florey Department of Neuroscience and Mental Health, University of Melbourne, Melbourne, VIC, Australia 3010.

Trends in Neurosciences
|February 21, 2025
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Summary

Researchers found a rapid estrogen pathway in female mice that influences binge drinking. This nongenomic signaling involves estrogen receptor α (ERα) in the brain, highlighting sex-specific alcohol use mechanisms.

Keywords:
alcoholbed nucleus of the stria terminaliscorticotropin-releasing factorestrogen receptorsestrous cyclesex differences

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Area of Science:

  • Neurobiology
  • Endocrinology
  • Behavioral Science

Background:

  • Sex hormones significantly influence behavior through various pathways.
  • Estrogen, a key sex hormone, plays a role in complex behaviors, but its rapid signaling mechanisms are not fully understood.

Purpose of the Study:

  • To investigate the rapid, nongenomic signaling pathways of estrogen in mediating alcohol consumption.
  • To identify the specific brain regions and receptors involved in estrogen-driven behaviors related to alcohol use.

Main Methods:

  • Utilized female mice models to study alcohol consumption patterns.
  • Investigated the role of membrane-associated estrogen receptor α (ERα) in the bed nucleus of the stria terminalis (BNST).
  • Examined rapid, nongenomic estrogen signaling pathways.

Main Results:

  • Identified a rapid, nongenomic estrogen signaling pathway that mediates binge drinking behavior in female mice.
  • Demonstrated the involvement of membrane-associated estrogen receptor α (ERα) located in the BNST.
  • Linked these neurobiological findings to naturally circulating hormone levels.

Conclusions:

  • Estrogen exerts rapid, nongenomic effects on behavior via membrane-bound receptors.
  • The BNST is a critical brain region for estrogen's influence on alcohol use.
  • These findings reveal sex-specific neurobiological mechanisms underlying alcohol consumption.