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Analgesics and glutathione.

Bernhard H Lauterburg1

  • 1Department of Clinical Pharmacology, University of Bern, Bern, Switzerland. bernhard.lauterburg@ikp.unige.ch

American Journal of Therapeutics
|April 10, 2002
PubMed
Summary

Glutathione (GSH) is crucial for cellular health, detoxifying harmful substances. While paracetamol overdose depletes GSH, leading to liver cell death, increased risk in other low-GSH populations remains unproven.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Toxicology

Background:

  • Glutathione (GSH) is vital for cellular functions, including detoxification and regulation of gene expression.
  • Maintaining GSH homeostasis is essential for overall organismal health.
  • GSH is synthesized from precursor amino acids: cysteine, glutamic acid, and glycine.

Purpose of the Study:

  • To investigate the role of glutathione (GSH) in cellular function and its implications in drug toxicity.
  • To assess the risk of paracetamol toxicity in individuals with depleted GSH levels.

Main Methods:

  • Review of existing evidence on glutathione's role in cellular processes.
  • Analysis of documented cases of paracetamol toxicity, particularly in relation to GSH levels.
  • Examination of potential risk factors and populations with low GSH.

Main Results:

  • Toxic doses of paracetamol deplete intracellular GSH, causing liver cell death via necrosis and apoptosis.
  • Chronic alcoholics with low intrahepatic GSH may face an increased risk of paracetamol toxicity due to induced enzyme systems.
  • Anecdotal evidence does not support increased paracetamol toxicity risk in populations like HIV patients, those with hepatitis C, malnutrition, or cirrhosis.

Conclusions:

  • Glutathione (GSH) plays a critical role in cellular detoxification and homeostasis.
  • While paracetamol toxicity is linked to GSH depletion, increased risk in most low-GSH populations is not conclusively demonstrated.
  • Chronic alcoholics represent a specific population where low GSH may increase paracetamol toxicity risk, though occurrences are rare and unpredictable.

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