NMDA receptors are involved in Ginkgo extract-induced facilitation on memory retention of passive avoidance learning in rats

Neuroscience Letters
Elaheh NooshinfarSamand Sajjadi

Abstract

Herbal therapies are commonly used to enhance memory and learning. Ginkgo biloba has shown to be one of the most popular herbs that is used to treat amnesia and retard age related memory deficits. Although, there have been several reports on the memory enhancing effects of Ginkgo, involvement of glutamatergic system that plays pivotal role in learning and memory has not been precisely assessed so far. The current study intended to investigate the effect of Ginkgo intake on amnesia while NMDA (N-methyl D-aspartic acid) receptors blocked by the administration of MK-801. The study used passive avoidance (PA) task to investigate the effect of chronic administration of Ginkgo extract (40 and 90 mg/kg; oral) on the memory span in male Wistar rats, suffering from MK-801-induced forgetfulness (0.06 and 0.1 mg/kg; i.p.). The results indicate that Ginkgo was able to remove MK-801-induced forgetfulness, indicating that Ginkgo can affect memory retention but not effect on passive avoidance acquisition, using pathways other than glutamatergic system as well. The results might indicate that Ginkgo extract can be effective in removing forgetfulness caused by inhibiting NMDA receptors from performing their activities.

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Citations

Oct 23, 2012·Phytomedicine : International Journal of Phytotherapy and Phytopharmacology·Leige MaXiangping Yang
Aug 13, 2013·International Journal of Developmental Neuroscience : the Official Journal of the International Society for Developmental Neuroscience·Rasha M Abd-ElhadyAmani E Khalifa
Oct 22, 2016·Phytomedicine : International Journal of Phytotherapy and Phytopharmacology·Min-Soo KimWon Kyung Jeon
Oct 18, 2008·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Vesna IveticVesna Vasic

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