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Oxidation of Alcohols

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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-induced oxidative stress: basic knowledge.

Mario Comporti1, Cinzia Signorini, Silvia Leoncini

  • 1Department of Pathophysiology, Experimental Medicine and Public Health, University of Siena, via A. Moro, 53100 Siena, Italy.

Genes & Nutrition
|July 8, 2010
PubMed
Summary
This summary is machine-generated.

Ethanol metabolism generates toxic acetaldehyde and oxidative stress, increasing lipid peroxidation and F(2)-isoprostanes. This highlights the damaging effects of alcohol on cellular membranes and overall health.

Keywords:
CYP2E1 isoformEthanol metabolismHydroxyethyl radicalsLiver-free non-protein bound ironOxidative stressPlasma isoprostanes

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Assessment of Glutamine as a Fuel Source for Alveolar Macrophages Exposed to Chronic Ethanol Using an Extracellular Flux Bioanalyzer
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Imaging Approaches to Assessments of Toxicological Oxidative Stress Using Genetically-encoded Fluorogenic Sensors
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Imaging Approaches to Assessments of Toxicological Oxidative Stress Using Genetically-encoded Fluorogenic Sensors

Published on: February 7, 2018

Area of Science:

  • Biochemistry
  • Toxicology
  • Cellular Biology

Background:

  • Ethanol metabolism involves multiple pathways, including alcohol dehydrogenase, catalase, and the cytochrome P450 system (specifically CYP2E1).
  • Acetaldehyde, a key metabolite, contributes to cellular toxicity.
  • Ethanol metabolism disrupts cellular redox balance, leading to reductive stress.

Purpose of the Study:

  • To review ethanol metabolism pathways and their toxicological implications.
  • To discuss the mechanisms of ethanol-induced oxidative stress.
  • To evaluate ethanol-induced lipid peroxidation and its markers.

Main Methods:

  • Review of established metabolic pathways.
  • Discussion of biochemical mechanisms of radical formation.
  • Evaluation of lipid peroxidation markers like MDA and F(2)-isoprostanes.

Main Results:

  • Ethanol metabolism shifts the NAD/NADH ratio, causing reductive stress.
  • Increased formation of malondialdehyde (MDA) and conjugated dienes indicates lipid peroxidation.
  • A decrease in unsaturated fatty acids in liver cell membranes and elevated plasma F(2)-isoprostanes are observed.

Conclusions:

  • Ethanol metabolism generates toxic acetaldehyde and reactive oxygen species.
  • Ethanol induces significant oxidative stress and lipid peroxidation.
  • Elevated F(2)-isoprostanes serve as a marker for ethanol toxicity.