Ce. Weaver et al., 17-BETA-ESTRADIOL PROTECTS AGAINST NMDA-INDUCED EXCITOTOXICITY BY DIRECT INHIBITION OF NMDA RECEPTORS, Brain research, 761(2), 1997, pp. 338-341
Several lines of evidence suggest that 17 beta-estradiol (beta E-2) ha
s neuroprotective properties. The risk and severity of dementia are de
creased in women who have received estrogen therapy, and beta E-2 prot
ects neurons in vitro against death from a variety of stressors. Neuro
protection by beta E-2 has been suggested to be due to free radical sc
avenging. We demonstrate an additional neuroprotective mechanism where
by beta E2 protects against NMDA-induced neuronal death by directly in
hibiting the NMDA receptor. (C) 1997 Elsevier Science B.V.