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Related Concept Videos

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Related Experiment Video

Updated: Jun 11, 2026

Assessment of Glutamine as a Fuel Source for Alveolar Macrophages Exposed to Chronic Ethanol Using an Extracellular Flux Bioanalyzer
08:37

Assessment of Glutamine as a Fuel Source for Alveolar Macrophages Exposed to Chronic Ethanol Using an Extracellular Flux Bioanalyzer

Published on: November 15, 2024

Ethanol enhances taurine-activated glycine receptor function.

Brian T Welsh1, Dean Kirson, Hunter M Allen

  • 1Institutes for Neuroscience, University of Texas at Austin, Austin, Texas 78712, USA.

Alcoholism, Clinical and Experimental Research
|July 1, 2010
PubMed
Summary

Ethanol enhances taurine

Area of Science:

  • Neuroscience
  • Pharmacology

Background:

  • Taurine acts as a partial agonist on glycine receptors (GlyR).
  • Ethanol modulates GlyR activity, but its effect on taurine-activated GlyR was unstudied.

Purpose of the Study:

  • Investigate ethanol's modulation of taurine-activated GlyR.
  • Compare ethanol's mechanism on taurine vs. glycine activation.

Main Methods:

  • Expressed wild-type and mutant alpha1 GlyR in Xenopus oocytes.
  • Used electrophysiology to measure responses to glycine, taurine, and ethanol.

Main Results:

  • Ethanol potentiated both glycine- and taurine-activated GlyR currents.
  • Ethanol shifted concentration-response curves leftward, without effect at saturating concentrations.

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Development of an Ethanol-induced Fibrotic Liver Model in Zebrafish to Study Progenitor Cell-mediated Hepatocyte Regeneration
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  • Zinc chelation reduced ethanol's enhancement of taurine-gated GlyR; S267I mutation blocked this enhancement.
  • Conclusions:

    • Ethanol modulates taurine-activated GlyR similarly to glycine.
    • Ethanol's lack of effect at saturating taurine concentrations offers mechanistic insight into alcohol's actions on GlyR.