Coadministration of MK-801 with amphetamine, cocaine or morphine prevents rather than transiently masks the development of behavioral sensitization

Marina E. Wolf, Michael Jeziorski

Research output: Contribution to journalArticle

239 Scopus citations


Although coadministration of N-methyl-d-aspartate (NMDA) antagonists has been reported to prevent behavioral sensitization to psychomotor stimulants, it has been suggested that this effect is transitory and that sensitization is unmasked after longer periods of drug abstinence. To test this, rats were coadministered either amphetamine, cocaine, or morphine with the NMDA antagonist MK-801 and tested for sensitization after 7-10 days of abstinence. No sensitization was observed, suggesting that NMDA antagonists do not transiently mask sensitization but instead interfere with long-term processes responsible for its development.

Original languageEnglish (US)
Pages (from-to)291-294
Number of pages4
JournalBrain research
Issue number2
StatePublished - Jun 11 1993



  • Dopamine
  • Drug of abuse
  • Locomotion
  • NMDA receptor

ASJC Scopus subject areas

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

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