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Published on: May 3, 2017
Glutamate receptor-mediated inhibition of L-glutamate efflux from cerebral cortex in vitro
Atticus H Hainsworth1, Rachael M Nelson, David G Lambert
1Pharmacology Research Group, Leicester School of Pharmacy, De Montfort University, Leicester, LE1 9BH, UK. ahainsworth@dmu.ac.uk
Abstract:
We tested whether glutamate receptor ligands affect oxygen-glucose deprivation-evoked L-glutamate efflux from adult rat cerebrocortical prisms. The uncompetitive NMDA antagonist AR-R15896AR inhibited efflux (IC50 34 microM, 87% maximal inhibition). AMPA/kainate receptor blockade (NBQX, 100 microM) or Group II metabotropic glutamate receptor activation (DCG-IV, 10 microM) inhibited efflux (41%, 67% respectively) but Group I mGluR blockade (CPCCOEt/MPEP, 10 microM) was without effect. These data support a modulatory effect of glutamate receptors on L-glutamate efflux.
