Chronic intermittent ethanol treatment selectively alters N-methyl-D-aspartate receptor subunit surface expression in cultured cortical neurons.

Chronic Intermittent Ethanol Treatment Selectively Alters NMDA Receptor Subunit surface expression in Cultured Cortical Neurons

Chronic ethanol increases N-methyl-D-aspartate-stimulated nitric oxide formation but not receptor density in cultured cortical neurons.

The effects of prolonged ethanol exposure on excitatory amino acid receptor stimulated nitric oxide (NO) formation were examined in primary rat cortical neuronal cultures. Chronic ethanol (4 days, 100 mM) potentiated N-methyl-D-aspartate (NMDA)-stimulated NO formation as determined by measuring the conversion of [3H]arginine to [3H]citrulline. In contrast, chronic ethanol had no effect on NO fo...

NMDA receptor upregulation: molecular studies in cultured mouse cortical neurons after chronic antagonist exposure.

We examined the possibility of changes in gene expression of the NMDA receptor subunits after chronic antagonist treatment. Exposure of neurons to the NMDA antagonist D(-)-2-amino-5-phosphonopentanoic acid (AP-5) produced an increase in the levels of the R2B mRNA subunit. Concomitant exposure of neurons to AP-5 and NMDA reversed the upregulation. Chronic AP-5 treatment increased the R1 polypept...

Chronic benzodiazepine administration alters hippocampal CA1 neuron excitability: NMDA receptor function and expression(1).

Rats are tolerant to benzodiazepine (BZ) anticonvulsant actions two days after ending one-week administration of the BZ, flurazepam (FZP). Concurrently, GABA(A) receptor-mediated inhibition is reduced and AMPA receptor-mediated excitation is selectively enhanced in CA1 pyramidal neurons in hippocampal slices. In the present study, the effects of chronic FZP exposure on NMDA receptor (NMDAR) cur...

Analysis of transcriptional regulatory sequences of the N-methyl-D-aspartate receptor 2A subunit gene in cultured cortical neurons and transgenic mice.

The postnatal appearance and up-regulation of the NR2A subunit of the N-methyl-d-aspartate receptor contributes to the functional heterogeneity of the receptor during development. To elucidate the molecular mechanisms that regulate the neural and developmental specific expression of NR2A, an upstream approximately 9-kb region of the gene harboring the promoter was isolated and characterized in ...