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D-Cycloserine reverses the working memory impairment of hippocampal-lesioned rats in a spatial learning task

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Abstract

It is shown that D-cycloserine has cognition-enhancing properties in quinolinic acid hippocampal-lesioned rats. Lesioned rats had a severe impairment of working memory in an allocentric spatial reversal paradigm in the 8-arm maze, and performance could be restored with 12 mg/kg i.p. D-cycloserine, given 30 min before testing. The present findings favour the testing of D-cycloserine for clinical efficacy in patients with Alzheimer's disease with loss of pyramidal neurons and disconnected glycine-NMDA receptor activation.

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