The amphetamine conditioned place preference: differential involvement of dopamine receptor subtypes and two dopaminergic terminal areas

Noboru Hiroi, Norman M. White

Research output: Contribution to journalArticle

141 Citations (Scopus)

Abstract

We investigated involvement of dopamine receptor subtypes and two dopaminergic terminal areas in the acquisition and the expression of the amphetamine conditioned place preference (CPP). When injected systemically before conditioning, both D1 and D2 dopamine antagonists blocked acquisition in a dose-dependent manner. When injected systemically before testing, the effects of the same D1 and D2 antagonists differed. The selective D1 antagonist SCH23390 dose-dependently blocked expression of the previously established conditioned behavior within the dose range that also blocked acquisition. In contrast, D2 antagonists failed to block expression of the amphetamine CPP at doses which blocked acquisition. Expression was, however, blocked by higher doses of D2 antagonists, which may have lost their selectivity for the D2 dopamine receptor. The expression of the CPP was also blocked by microinjections of SCH23390 or sulpiride into nucleus accumbens, but not into striatum. In a control experiment, sodium pentobarbital, which significantly reduced spontaneous locomotor activity in a manner similar to the higher doses of the dopamine antagonists, had no effect on the expression of the amphetamine CPP when given before testing. Finally, electrolytic lesions of the dorsal striatum potentiated the amphetamine CPP. These findings indicate that the dopamine released by amphetamine interacts with both D1 and D2 dopamine receptors to establish a CPP, but that the expression of the CPP may involve activation of the D1 dopamine receptor in the nucleus accumbens.

Original languageEnglish (US)
Pages (from-to)141-152
Number of pages12
JournalBrain Research
Volume552
Issue number1
DOIs
StatePublished - Jun 21 1991
Externally publishedYes

Fingerprint

Dopamine Receptors
Amphetamine
Dopamine D1 Receptors
Dopamine D2 Receptors
Nucleus Accumbens
Sulpiride
Dopamine Antagonists
Microinjections
Pentobarbital
Locomotion
Dopamine
SCH 23390

Keywords

  • Conditioned place preference
  • Conditioned reinforcement
  • Conditioned reward
  • Conditioning
  • d-Amphetamine
  • D1
  • D2
  • Dopamine
  • Metoclopramide
  • Neuroleptic
  • Nucleus accumbens
  • Primary reward
  • SCH23390
  • Striatum
  • Sulpiride
  • α-Flupenthixol

ASJC Scopus subject areas

  • Developmental Biology
  • Molecular Biology
  • Clinical Neurology
  • Neuroscience(all)

Cite this

The amphetamine conditioned place preference : differential involvement of dopamine receptor subtypes and two dopaminergic terminal areas. / Hiroi, Noboru; White, Norman M.

In: Brain Research, Vol. 552, No. 1, 21.06.1991, p. 141-152.

Research output: Contribution to journalArticle

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