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Related Experiment Videos

Oxidative damage in alcoholic liver disease.

K Hagymási1, A Blázovics, G Lengyel

  • 1Second Department of Internal Medicine, Semmelweis University, Budapest, Hungary. hkriszti@bel2.sote.hu

European Journal of Gastroenterology & Hepatology
|February 24, 2001
PubMed
Summary

Alcoholism depletes the body's antioxidant defenses, particularly in erythrocytes. This study highlights gender differences in alcohol toxicity and suggests erythrocyte antioxidant capacity as a marker for alcoholic liver disease progression.

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Area of Science:

  • Biochemistry
  • Toxicology
  • Clinical Nutrition

Background:

  • Alcohol metabolism involves direct effects and its metabolite, impacting redox state.
  • Ethanol's distribution, bioavailability, and metabolism influence alcoholism predisposition and alcohol toxicity, including gender disparities.
  • Ethanol consumption is linked to oxidative stress.

Purpose of the Study:

  • To investigate the reduction-oxidation status and antioxidant balance in individuals with alcoholism compared to healthy controls.
  • To explore gender-specific differences in alcohol toxicity and its metabolic effects.
  • To assess the potential of non-invasive measurements for monitoring alcoholic liver disease.

Main Methods:

  • Studied 26 Caucasian alcoholics and 32 healthy controls.

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  • Measured plasma free sulfhydryl (SH)-group concentration, hydrogen-donating ability, and reducing power using spectrophotometry.
  • Assessed total scavenger capacity in plasma and erythrocytes via chemiluminometry.

    • Main Results:

    • Alcoholics exhibited reduced plasma free SH-group concentration and hydrogen-donating ability, with increased reducing power.
    • Total scavenger capacity was diminished in both erythrocytes and plasma of alcoholic patients.
    • Significant gender differences were observed in antioxidant capacity and alcohol toxicity.

    Conclusions:

    • Alcoholic dependence leads to progressive exhaustion of erythrocyte antioxidant capacity.
    • Non-invasive measurement of erythrocyte antioxidant capacity can aid in monitoring alcoholic liver disease.
    • Findings suggest a gender-based susceptibility to alcohol toxicity.