Abstract
Memory loss observed as a consequence of aging is paralleled by a down-regulation of AMPA-type glutamate receptors (AMPARs) that mediate fast excitatory synaptic transmission. Activation of these receptors enhances long-term potentiation (LTP), a neuronal process demonstrated to be crucial for memory storage and thought to be a cellular substrate of learning and memory. In the present studies, we determined that LTP was reduced in aged rats when compared to young rats and that acute treatment with CX1846, a novel AMPAR positive allosteric modulator, fifteen minutes prior to tetanic stimulation completely reversed the significant deficit in LTP observed in aged rats. These results suggest that CX1846 might be useful for the treatment of age-related memory impairments.
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