Journal article

The effects of estradiol on estrogen receptor and glutamate transporter expression in organotypic hippocampal cultures exposed to oxygen-glucose deprivation

Helena Cimarosti, Ross D O'Shea, Nicole M Jones, Ana Paula Horn, Fabricio Simao, Lauren L Zamin, Melissa Nassif, Rudimar Frozza, Carlos Alexandre Netto, Philip M Beart, Christianne Salbego

NEUROCHEMICAL RESEARCH | SPRINGER/PLENUM PUBLISHERS | Published : 2006

Abstract

The molecular basis of estrogen-mediated neuroprotection against brain ischemia remains unclear. In the present study, we investigated changes in expression of estrogen receptors (ERs) alpha and beta and excitatory amino acid transporters (EAAT) 1 and 2 in rat organotypic hippocampal slice cultures treated with estradiol and subsequently exposed to oxygen--glucose deprivation (OGD). Pretreatment with 17beta-estradiol (10 nM) for 7 days protected the CA1 area of hippocampus against OGD (60 min), reducing cellular injury by 46% compared to the vehicle control group. Levels of ERalpha protein were significantly reduced by 20% after OGD in both vehicle- and estradiol-treated cultures, whereas ER..

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