alexa Long-term effects of repeated methylamphetamine administration on dopamine and serotonin neurons in the rat brain: a regional study.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Ricaurte GA, Schuster CR, Seiden LS

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Abstract Repeated high doses (25 and 100 mg/kg) of methylamphetamine produce long-term depletions of both dopamine (DA) and serotonin (5-HT) in the rat brain. In the DA system, depletions are most pronounced in the neostriatum and substantia nigra, with decreased levels in these two regions being significantly correlated. Within the 5-HT system, levels are most reduced in the amygdala, frontal cortex and neostriatum. When both the DA and 5-HT depleting actions of methylamphetamine are considered, the hypothalamus stands out as one of the more resistant brain regions. The regional pattern of reduced 5-HT levels following methylamphetamine is similar to that seen after p-chloroamphetamine. After both methylamphetamine and p-chloroamphetamine, a loss of 5-HT synaptosomal uptake sites occurs. Serotonergic systems are more sensitive than DA systems to the apparent neurotoxic actions of methylamphetamine.
This article was published in Brain Res and referenced in Journal of Addiction Research & Therapy

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