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The extracellular concentration of glutamate in the hippocampus is increased by hippocampal perfusion with CaEDTA, a membrane-impermeable zinc chelator, suggesting that the activity of glutamatergic neurons in the hippocampus are influenced by the extracellular concentrations of zinc. In the present study, the relationship between the extracellular concentrations of zinc and mossy fiber activity in...
Zinc release in the lateral nucleus of the amygdala was examined using rat brain slices. The lateral and basolateral nuclei in the amygdala were evidently stained by Timm's sulfide-silver staining method. When the amygdala including both the nuclei was stimulated with 100 mM KCl by means of in vivo microdialysis, extracellular zinc concentration was increased significantly. Zinc release in the lateral...
On the basis of the evidence that vesicular zinc may be essential to the functions of the amygdala, the movement and action of actively functioning zinc in synapses in the amygdala of rats were studied using in vivo microdialysis. The increase of 65 Zn release into the amygdalar extracellular space during stimulation with high K + was inhibited by the addition of 1 μM tetrodotoxin...
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