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Idiosyncratic drug toxicity affecting the liver, skin, and bone marrow in dogs and cats

Lauren A Trepanier1

  • 1School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI 53706-1102, USA. latrepanier@svm.vetmed.wisc.edu

The Veterinary Clinics of North America. Small Animal Practice
|July 30, 2013
PubMed

Insights

Idiosyncratic drug toxicity, though rare, can cause severe organ damage. These reactions often involve reactive metabolites and immune responses, influenced by individual drug metabolism and oxidative stress.

Area of Science:

  • Pharmacology
  • Toxicology
  • Immunology

Background:

  • Idiosyncratic drug toxicity reactions are uncommon but can be severe or fatal.
  • Commonly affected organs include the liver, skin, and bone marrow.
  • These reactions are often linked to reactive metabolites and immune system involvement.

Purpose of the Study:

  • To summarize the mechanisms and risk factors associated with idiosyncratic drug toxicity.
  • To highlight the role of reactive metabolites and immune responses in drug-induced organ damage.
  • To underscore the importance of individual variability in drug metabolism and immune presentation.

Main Methods:

  • Literature review of idiosyncratic drug toxicity mechanisms.
  • Analysis of common target organs and etiological factors.
  • Discussion of the interplay between drug metabolism, oxidative stress, and immune responses.

Main Results:

  • Reactive metabolites are frequently implicated in causing cellular or organelle damage.
  • Systemic immune responses can amplify the toxicity caused by reactive metabolites.
  • Individual susceptibility is influenced by variations in drug biotransformation, oxidative stress levels, and antigen presentation.

Conclusions:

  • Understanding the mechanisms of idiosyncratic drug toxicity is crucial for predicting and preventing severe adverse drug reactions.
  • Individual patient factors significantly contribute to the risk of developing these toxicities.
  • Further research into drug metabolism and immune interactions is warranted to mitigate these risks.
Keywords:
Adverse drug reactionBlood dyscrasiaHepatotoxicitySkin eruption

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