Journal
NEUROSCIENTIST
Volume 15, Issue 6, Pages 599-610Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/1073858409340924
Keywords
preoptic area; hypothalamus; sex differences; sex behavior; neuroprotection; prostaglandins
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Funding
- NIMH NIH HHS [R01 MH052716-14, R01 MH052716] Funding Source: Medline
- NINDS NIH HHS [R01 NS050525-04, R01 NS050525] Funding Source: Medline
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Estradiol is a potent steroid of both gonadal and neuronal origin that exerts profound and enduring effects on the brain as it develops. Differences in estradiol production in males and females underlie the establishment of many sexually dimorphic brain characteristics. Two paradigm shifts in the understanding of estradiol and its actions have expanded the view front one of slow narrowly controlled nuclear transcription to include rapid effects initiated at the membrane and inducible by locally synthesized steroid. A survey of estradiol actions reveals regional specificity Underlying opposing effects Such that estradiol induces cell death in one region but prevents it in another or promotes synaptogenesis in one region but retards it in the other. Similarly, estradiol is neuroprotective or neurodamaging and enhances excitation or dampens excitation, depending on the model and neurotransmitter under study Understanding the diverse actions of estradiol in different brain regions under differing conditions is essential to harnessing the tremendous therapeutic potential of this endogenous naturally occurring and efficacious neural modulator.
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