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A role for the mesolimbic dopamine system in the psychostimulant actions of mdma

Academic Article
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Overview

authors

  • Gold, L. H.
  • Hubner, C. B.
  • Koob, George

publication date

  • 1989

journal

  • Psychopharmacology  Journal

abstract

  • Methylenedioxymethamphetamine (MDMA) is a phenylethylamine with a chemical structure that resembles both the amphetamines and mescaline and has both stimulant and perception altering properties. The stimulant properties of MDMA were assessed in photocell cages designed to measure locomotor activity in rats. MDMA, over a range of doses (2.5-10.0 mg/kg, SC) produced locomotor hyperactivity which lasted up to 4 h. Further studies examined the role of the mesolimbic dopamine system in the hyperactivity induced by MDMA. 6-Hydroxydopamine lesions of the Nucleus accumbens attenuated the locomotor response produced by MDMA. The well characterized attenuation of the locomotor response produced by amphetamine was also demonstrated in the same rats. The present study demonstrates similarities in the stimulant properties of MDMA and amphetamine, and also suggests that as with amphetamine, the locomotor activation associated with MDMA may involve the presynaptic release of dopamine in the region of the Nucleus accumbens. However, MDMA may have a more unusual pharmacological profile because of its longer duration of action, neurotoxic potential, and differences in the qualitative aspects of its psychoactive effects.

subject areas

  • 3,4-Methylenedioxyamphetamine
  • Amphetamine
  • Amphetamines
  • Animals
  • Desipramine
  • Dopamine
  • Dose-Response Relationship, Drug
  • Hydroxydopamines
  • Male
  • Motor Activity
  • N-Methyl-3,4-methylenedioxyamphetamine
  • Nucleus Accumbens
  • Oxidopamine
  • Psychotropic Drugs
  • Rats
  • Rats, Inbred Strains
  • Receptors, Dopamine
  • Receptors, Serotonin
  • Septal Nuclei
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Identity

International Standard Serial Number (ISSN)

  • 0033-3158

Digital Object Identifier (DOI)

  • 10.1007/bf00634450

PubMed ID

  • 2571175
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Additional Document Info

start page

  • 40

end page

  • 47

volume

  • 99

issue

  • 1

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