Abstract
The effect of NMDA receptor antagonist phencyclidine (PCP) on expression of cyclooxygenase (COX)-2 mRNA in the rat brain was studied. Administration of PCP (12.5, 25 or 50 mg/kg, i.p., 6 h) caused marked induction of COX-2 mRNA and heat shock gene hsp-70 mRNA, a marker of neuronal injury, in the retrosplenial cortex, in a dose-dependent manner. These results suggest that COX-2 may play a role in the neurotoxicity of NMDA receptor antagonists.
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