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Upregulation of NMDA receptor subunit proteins in the cerebral cortex during diazepam withdrawal
1Department of Pharmacology, School of Pharmacy, Hoshi University, Tokyo, Japan.
Abstract:
The present study investigated the changes in NMDA receptor subunit proteins in diazepam-withdrawn rat cerebral cortex, using Western blotting analysis. The protein levels of the NR1 and NR2B, but not NR2A, subunits were significantly increased in diazepam-withdrawn rats compared to those in control rats. Therefore, an increase in the NR1 and NR2B subunit proteins may be responsible for both the previously observed upregulation of [3H]dizocilpine binding in the cerebral cortex and the appearance of diazepam withdrawal signs.
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