Authors: Akshay Anand Manish Kumar Saraf Sudesh Prabhakar
Publish Date: 2010/04/30
Volume: 35, Issue: 8, Pages: 1172-1181
Abstract
Amnesia may result from ageing chronic drug abuse or head injury and there are limited therapeutic strategies to such conditions We have shown that Bacopa monniera a memory enhancing drug can reverse both diazepam and scopolamine induced amnesia in mice In order to understand the downstream effects of B monniera this study was designed to investigate how B monniera antagonizes MK801 an NMDA receptor antagonist and N ωNitroLarginine LNNA a nitric oxide synthase inhibitor We compared the degree of reversal B monniera imparts on MK801 and LNNA induced anterograde amnesia in experimental mice Our data revealed that LNNA induced anterograde amnesia was significantly reversed by B monniera however it did not attenuate the MK 801 induced anterograde amnesia B monniera significantly increased calmodulin CaM and pCREB/CREB levels when the whole brain lysates of B monniera pretreated amnesic mice were compared with those of LNNA treated mice We conclude that antiamnesic effect B monniera on LNNA induced amnesia may be mediated by NO pathyway involving CaM which is required for LTP sustenance These studies evoke interest in their future development as potential antiamnesic drugs
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