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Related Experiment Videos

Cocaethylene hepatotoxicity in mice.

S M Roberts1, L Roth, R D Harbison

  • 1Center for Environmental and Human Toxicology, University of Florida, Gainesville 32615-9495.

Biochemical Pharmacology
|May 8, 1992
PubMed
Summary

Cocaethylene, a cocaine and ethanol metabolite, causes dose-dependent liver damage (hepatic necrosis) in mice. Its toxicity appears to involve oxidative metabolism, similar to cocaine.

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Area of Science:

  • Toxicology
  • Pharmacology
  • Hepatology

Background:

  • Cocaethylene is a unique metabolite formed from cocaine and ethanol.
  • Understanding its toxicological profile is crucial for public health.
  • Previous studies suggest cocaine itself can induce liver injury.

Purpose of the Study:

  • To investigate the hepatotoxicity of cocaethylene in a mouse model.
  • To elucidate the metabolic pathways involved in cocaethylene-induced liver injury.
  • To compare the toxicity of cocaethylene with its parent compound, cocaine.

Main Methods:

  • Administration of varying doses of cocaethylene to ICR male mice.
  • Assessment of liver damage (hepatic necrosis) and glutathione levels.
  • Evaluation of toxicity following pretreatment with cytochrome P450 inhibitors/inducers and esterase inhibitors.

Main Results:

  • Cocaethylene induced dose-dependent midzonal hepatic necrosis, peaking at 12-24 hours.
  • A transient decrease in hepatic glutathione was observed post-administration.
  • Inhibition of cytochrome P450 reduced toxicity, while induction or esterase inhibition exacerbated it.

Conclusions:

  • Cocaethylene causes significant hepatotoxicity in mice, mediated by oxidative metabolism.
  • The mechanism of liver injury appears similar to that of cocaine.
  • Further research into cocaethylene's metabolic activation and detoxification is warranted.

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