Specific in vitro binding of (S,S)-[3H]MeNER to norepinephrine transporters Academic Article uri icon

Overview

MeSH Major

  • Brain
  • Fluoxetine
  • Phenols
  • Radiopharmaceuticals
  • Symporters

abstract

  • The aim of this study was to determine the selectivity of (S,S)-2-(alpha-(2-methoxyphenoxy)benzyl)morpholine (MeNER) binding to norepinephrine transporters (NET). Quantitative autoradiography studies of NET binding were performed in brains of wildtype mice and those of mutant mice lacking one or two alleles of the NET gene. [3H]MeNER binding in the wildtype mouse brains was consistent with previously reported distributions of NET. Highest levels were found in the locus coeruleus, thalamus, hypothalamus, and bed nucleus of stria terminalis. Specific binding in these regions was approximately 50% in the heterozygous NET mice and negligible in the NET knockout mice. Binding in the wildtype mouse brains was displaced by the NET ligand, nisoxetine, but not by the serotonin or dopamine transporter blockers, citalopram or GBR 12935. [3H]MeNER displayed much higher affinity for NET than for SERT or DAT in homogenate binding studies. Each of these features supports the binding specificity of this candidate in vivo NET ligand.

publication date

  • May 2005

Research

keywords

  • Academic Article

Identity

Language

  • eng

Digital Object Identifier (DOI)

  • 10.1002/syn.20133

PubMed ID

  • 15729740

Additional Document Info

start page

  • 100

end page

  • 4

volume

  • 56

number

  • 2