Incubation of cultured slices of the olfactory cortex from rat brain with L-carnosine in concentrations of 50, 250, and 500 M induced activation of glutamatergic and GABAB-ergic mechanisms and facilitated long-term posttetanic potentiation. The effect of L-carnosine is mediated by its effect on AMPA- and NMDA-related glutamatergic receptors and on inhibitory GABAB receptors.
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