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Methamphetamine increases dopamine transporter higher molecular weight complex formation via a dopamine- and hyperthermia-associated mechanism.
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Multiple high-dose administrations of methamphetamine (METH) both rapidly (within hours) decrease plasmalemmal dopamine (DA) uptake and cause long-term deficits in DA transporter (DAT) levels and other dopaminergic parameters persisting weeks to months in rat striatum. In contrast, either a single
Methanandamide attenuates cocaine-induced hyperthermia in rats by a cannabinoid CB1-dopamine D2 receptor mechanism.
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Evidence implicates anandamide in dopamine-related cocaine function. In the present study, we investigated the effect of methanandamide (5 mg/kg, i.p.), a stable anandamide analog, on the hyperthermia and hyperactivity induced by a fixed dose of cocaine (15 mg/kg,i.p.). Cocaine administered to rats
Methamphetamine rapidly decreases mouse vesicular dopamine uptake: role of hyperthermia and dopamine D2 receptors.
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Multiple high-dose administrations of the dopamine-releasing agent, methamphetamine, rapidly and persistently decrease vesicular dopamine uptake in purified vesicles prepared from striata of treated rats. Because important differences in the neurotoxic effects of stimulants have been documented in
alpha-Phenyl-N-tert-butyl nitrone attenuates methamphetamine-induced depletion of striatal dopamine without altering hyperthermia.
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Methamphetamine (MA) administration to adult rats (4 x 10 mg/kg s.c.) induces neurotoxicity predominately characterized by a persistent reduction of neostriatal dopamine (DA) content. Hyperthermia following MA administration potentiates the resulting DA depletion. DA-derived free radicals are
Glucocorticoid status affects the response of rat striatal dopamine D2 receptors to hyperthermia and turpentine treatment.
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The influence of glucocorticoid status of the rats (absence of glucocorticoid hormones achieved by adrenalectomy and substitution by dexamethasone 5 mg/kg b.w.) on the response of striatal dopamine-D2 receptors to environmentally induced hyperthermia and treatment with a local inflammatory agent
Methamphetamine decreases mouse striatal dopamine transporter activity: roles of hyperthermia and dopamine.
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Multiple methamphetamine administrations rapidly decrease rat striatal dopamine transporter activity. To determine the species specificity of this phenomenon, the present studies examined effects of this stimulant on the dopamine transporter in mice. As in rats, multiple methamphetamine injections
Methamphetamine-induced hyperthermia and lethal toxicity: role of the dopamine and serotonin transporters.
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We examined the hyperthermic and lethal toxic effects of methamphetamine in dopamine transporter (DAT) and/or serotonin transporter (SERT) knockout (KO) mice. Methamphetamine (45 mg/kg) caused significant hyperthermia even in the mice with a single DAT gene copy and no SERT copies (DAT+/- SERT-/-
Methylone-induced hyperthermia and lethal toxicity: role of the dopamine and serotonin transporters.
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Methylone (2-methylamino-1-[3,4-methylenedioxy-phenyl]propan-1-one), an amphetamine analog, has emerged as a popular drug of abuse worldwide. Methylone induces hyperthermia, which is thought to contribute toward the lethal consequences of methylone overdose. Methylone has been assumed to induce
Interactions of dopamine D1 and D2 receptor antagonists with D-methamphetamine-induced hyperthermia and striatal dopamine and serotonin reductions.
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The effects of the dopamine D1 receptor antagonist R(+)-SCH-23390 and D2 receptor antagonist S(-)-eticlopride on d-methamphetamine-induced striatal monoamine reductions 72 h after treatment were investigated in relation to changes in body temperature. Rats were administered four 10-mg/kg doses of
An evaluation of l-ephedrine neurotoxicity with respect to hyperthermia and caudate/putamen microdialysate levels of ephedrine, dopamine, serotonin, and glutamate.
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l-Ephedrine is an active ingredient in several herbal formulations with a mechanism of action similar to amphetamine and methamphetamine. However, its potential to damage dopaminergic terminals in the caudate/putamen (CPu) has yet to be fully evaluated. The studies here used in vivo brain
Blockade of dopamine, but not noradrenaline, transporters produces hyperthermia in rats that lack serotonin transporters.
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To investigate whether life-long disturbed serotonin neurotransmission may result in adaptive changes of dopaminergic and noradrenergic systems, effects of drugs on stress-induced hyperthermia were studied in serotonin transporter knockout rats. The noradrenalin transporter blocker atomoxetine was
Seizure activity and hyperthermia potentiate the increases in dopamine and serotonin extracellular levels in the amygdala during exposure to d-amphetamine.
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Behavioral stereotypy, hyperthermia, and convulsive activity produced by exposure to multiple doses of d-amphetamine (AMPH) were related to changes in the extracellular levels of dopamine and serotonin (5-HT) in the amygdala, using the technique of microdialysis in awake and freely moving rats.
Dopamine-deficiency-enhanced hyperthermia and rhabdomyolysis during a heat wave in a metachromatic leucodystrophy heterozygote with metabolic myopathy.
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Whether a dopamine-deficiency syndrome in a Parkinson-syndrome (PS) may occur more easily during a heat wave than during more temperate climate conditions is unknown. We report a case that may suggest this. A 56 yo male with heterozygosity for metachromatic leucodystrophy and a history of metabolic
Neuroprotective action of MPEP, a selective mGluR5 antagonist, in methamphetamine-induced dopaminergic neurotoxicity is associated with a decrease in dopamine outflow and inhibition of hyperthermia in rats.
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The aim of this study was to examine the role of metabotropic glutamate receptor 5 (mGluR5) in the toxic action of methamphetamine on dopaminergic neurones in rats. Methamphetamine (10 mg/kg sc), administered five times, reduced the levels of dopamine and its metabolites in striatal tissue when
Involvement of central dopamine in the hyperthermia in rats produced by d-amphetamine.
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The effect of amphetamine on the body temperature was studied in 6-hydroxydopamine and pimozide pretreated rats. Amphetamine alone (1, 2.5 and 5 mg/kg) produced a fairly dose-dependent increase in body temperature. The effect was almost totally antagonized by pimozide, and also reduced after
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