Objective To investigate the effects of propofol or etomidate on expression of Glial fibrillary acidic protein(GFAP),protein kinase A(PKA) and cAMP response element binding protein(CREB) in hippocampus of rats.Methods Sixty male Sprague Dawley rats aged 28 days were randomly divided into 3 groups(n=20 each).The rats in propofol group and etomidate group received intraperitoneally injection of 200 mg/kg propofol and 60 mg/kg etomidate,respectively,while no drug was given to rats in control group.Respiratory ...