Do Opioid, alpha(2)-Adrenoreceptors, or Benzodiazepine Receptors Mediate ECS-Induced Hypothermia in Mice?
1991
: A single electroconvulsive shock in TO mice produced a drop in body temperature of 1.5-2 degrees C, which was maintained for up to 60 min. This hypothermic response was not attenuated by the opioid antagonist i.p. naltrexone (0.3, 1 mg/kg); the alpha(2)-adrenoreceptor antagonist i.p. RX811059 (0.05, 0.5 mg/kg), or the benzodiazepine receptor antagonist i.p. Ro 15-1788 (10, 20 mg/kg). The doses of antagonist used in this study had no effects on body temperature by themselves but significantly attenuated the hypothermia induced by their respective agonists, confirming their receptor-blocking activity. These findings suggest that electroconvulsive shock-induced hypothermia is not mediated by the release of either noradrenaline or by an endogenous ligand acting at opioid or benzodiazepine receptors.
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