[3H]3,4-Methylenedioxymethamphetamine (MDMA) interactions with brain membranes and glass fiber filter paper

Samuel S. Wang, George A. Ricaurte, Stephen J. Peroutka

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

The binding of [3H]3,4-methylenedioxymethamphetamine ([3H]MDMA) to both rat brain membrane preparations and glass fiber filter papers was analyzed in the present study. Saturation studies indicate that [3H]MDMA binding is saturable and monophasic in both the presence and absence of rat brain membranes. This apparent 'specific' binding of [3H]MDMA in both the presence and absence of brain homogenates was totally eliminated by pretreating glass fiber filter papers with polyethylenimine. Drug competition studies demonstrated that [3H]MDMA binding displays a distinct 'pharmacological' profile in the absence of brain tissue. These data indicate that apparent [3H]MDMA binding to rat brain homogenates results from artifactual of [3H]MDMA to glass fiber filter paper. In addition, uptake of [3H]MDMA into rat brain synaptosomes could not be detected. We conclude the [3H]MDMA has limited usefulness in radioligand binding studies.

Original languageEnglish (US)
Pages (from-to)439-443
Number of pages5
JournalEuropean Journal of Pharmacology
Volume138
Issue number3
DOIs
StatePublished - Jun 26 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Pharmacology

Keywords

  • (Artifactual binding)
  • 3,4-Methylenedioxymethamphetamine (MDMA)
  • Polyethylenimine
  • Radioligand binding studies

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