Effect of Etomidate on the Expressions of c-JUN and Heat Shock Protein 70 Induced by Kainic Acid in Rats
2004
Background: The present investigation was undertaken to evaluate the neuroprotective effect of etomidate against kainic acid (KA) induced neurotoxicity in rats by Western immunoblotting for heat shock protein 70 (HSP-70), c-JUN, and by acid-fuchsin histochemistry. Methods: Etomidate (20 mg/kg, i.p.) was administered in sequence, first being just one hour after KA (10 mg/kg, i.p.) injection, then three times one hour intervals. Neuronal damage in hippocampus was evaluated by using acid-fuchsin stain to detect cell death and HSP-70 and c-JUN induction as an index of cell injury at 3, 6, 24 and 48 h after the administration of KA. Results: Acid fuchsin positive neurons were increased in the CA1 and CA3 regions of the hippocampus after KA injection, but were significantly decreased by etomidate injection (P
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