PMID: 9443658Jan 27, 1998Paper

The involvement of adenosine receptors in the effect of dizocilpine on mice in the elevated plus-maze

European Neuropsychopharmacology : the Journal of the European College of Neuropsychopharmacology
C M FraserT W Stone

Abstract

It has been claimed that blockade of receptors for N-methyl-D-aspartate (NMDA) can enhance adenosine receptor function on single neurones. Previous work has also indicated that the NMDA channel blocker dizocilpine, and the A1 selective agonist N6-cyclopentyladenosine (CPA) both had anxiolytic profiles in the elevated plus-maze. The anxiolytic effect of dizocilpine was accompanied by an increase in locomotor activity. In the present study, the elevated plus-maze has been used to determine whether dizocilpine's effects on behaviour are mediated through activation of adenosine receptors. When co-administered with dizocilpine (0.05 mg/kg), CPA (0.05 mg/kg) reduced the anxiolytic and locomotor effects of dizocilpine. The A1 selective antagonist 1,3-dipropyl-8-cyclopentylxanthine (CPX, 0.05 mg/kg) had no effect when administered alone. When co-administered with dizocilpine, CPX reversed the anxiolytic and increased locomotor effects induced by dizocilpine. The A2 receptor selective agonist N6-[2-(3,5-dimethoxyphenyl)-2(2-methylphenyl)ethyladenosine (DPMA) (1 mg/kg) reversed both the anxiolytic effect and the increased locomotion induced by dizocilpine, while the A2 selective antagonist 3,7-dimethyl-1-propargylxanthine (DMPX) (1 mg/kg...Continue Reading

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Citations

Nov 11, 1999·Drug Discovery Today·S M Kaiser, R J Quinn
Oct 24, 2006·Genes, Brain, and Behavior·M A De Souza SilvaE Dere
Apr 17, 2020·Cells·Kenneth A Jacobson, Marc L Reitman

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