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Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder

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BK Channels: mediators and models for alcohol tolerance.

Steven N Treistman¹, Gilles E Martin

¹Institute of Neurobiology, University of Puerto Rico Medical Sciences Campus, San Juan 00901, Puerto Rico. steven.treistman@upr.edu

Trends in Neurosciences

|September 29, 2009

Summary

Enhanced acute tolerance to alcohol is linked to alcohol abuse. The study explores the BK channel

Area of Science:

Neuroscience
Molecular Biology
Pharmacology

Background:

Alcohol use disorder (AUD) is a major public health concern.
Enhanced acute tolerance to alcohol is a predictor of subsequent alcohol abuse.
The BK channel's role in alcohol tolerance is an emerging area of research.

Purpose of the Study:

To review the role of the calcium- and voltage-gated BK channel in the development of alcohol tolerance.
To highlight the molecular mechanisms, including the lipid environment and protein interactions, that influence BK channel function in the context of alcohol exposure.
To identify novel molecular targets for therapeutic interventions for alcoholism.

Main Methods:

Review of current literature on BK channel function and alcohol tolerance.

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Analysis of studies employing advanced techniques to examine ethanol's effects at realistic concentrations.

Focus on the interplay between BK channel isoforms, auxiliary proteins, and the cell membrane environment.

Main Results:

Ethanol's effects are being investigated at molecular and cellular levels, moving beyond its traditional view as a nonspecific membrane disruptor.
Specific components of the BK channel complex, including its lipid environment and associated proteins, are critical for mediating alcohol tolerance.
Novel molecular targets for treating alcoholism are being identified through this research.

Conclusions:

The BK channel is a key molecular player in the development of alcohol tolerance.
Understanding the BK channel's regulation by ethanol offers new therapeutic avenues for alcoholism.
Findings may extend to other substance use disorders due to shared neurobiological pathways.