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Related Experiment Videos

UCP3 and thyroid hormone involvement in methamphetamine-induced hyperthermia.

Jon E Sprague1, Nicole M Mallett, Daniel E Rusyniak

  • 1The Department of Pharmaceutical and Biomedical Sciences, The Raabe College of Pharmacy, Ohio Northern University, Ada, OH 45810, USA. j-sprague@onu.edu

Biochemical Pharmacology
|September 4, 2004
PubMed
Summary

Methamphetamine (METH) hyperthermia involves the thyroid hormone axis and uncoupling protein-3 (UCP3). UCP3 is crucial for METH-induced hyperthermia and lethality, while thyroid hormone plays a permissive role.

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Area of Science:

  • Neuropharmacology
  • Endocrinology
  • Physiology

Background:

  • Methamphetamine (METH) abuse is associated with dangerous hyperthermia.
  • The roles of the hypothalamic-pituitary-thyroid (HPT) axis and uncoupling protein-3 (UCP3) in METH-induced hyperthermia remain unclear.

Purpose of the Study:

  • To investigate the involvement of the HPT axis and UCP3 in METH-induced hyperthermia.
  • To elucidate the mechanisms underlying METH toxicity.

Main Methods:

  • Rats underwent thyroparathyroidectomy (TX) and levothyroxine supplementation.
  • Wild-type (WT) and UCP3 knockout (UCP3-/-) mice were treated with METH.
  • Body temperature and survival rates were monitored.

Main Results:

Related Experiment Videos

  • Thyroid hormone replacement restored METH-induced hyperthermia in TX rats.
  • UCP3-/- mice exhibited significantly blunted hyperthermia and were protected from METH lethality.
  • Thyroid hormone levels remained unchanged post-METH treatment in euthyroid animals.

Conclusions:

  • Thyroid hormone plays a permissive role in METH-induced thermogenesis.
  • UCP3 is essential for the development and maintenance of METH-induced hyperthermia and associated mortality.
  • Targeting UCP3 may offer a protective strategy against METH toxicity.