Cellular mechanisms of estradiol-mediated sexual differentiation of the brain.
Gonadal steroids organize the developing brain during a perinatal sensitive period and have enduring consequences for adult behavior. In male rodents testicular androgens are aromatized in neurons to estrogens and initiate multiple distinct cellular processes that ultimately determine the masculine phenotype. Within specific brain regions, overall cell number and dendritic morphology are the principal targets for hormonal organization. Recent advances have been made in elucidating the cellular mechanisms by which the neurological underpinnings of sexually dimorphic physiology and behavior are determined. These include estradiol-mediated prostaglandin synthesis, presynaptic release of glutamate, postsynaptic changes in glutamate receptors and changes in cell adhesion molecules. Sex differences in cell death are mediated by hormonal modulation of survival and death factors such as TNFalpha and Bcl-2/BAX.
Wright
Christopher L
CL
Department of Biology, Loyola University Maryland, Baltimore, MD 21210, USA.
Schwarz
Jaclyn S
JS
Dean
Shannon L
SL
McCarthy
Margaret M
MM
D000818:Animals; D001921:Brain / Q000378:metabolism*; D004958:Estradiol / Q000378:metabolism*; D005260:Female; D012739:Gonadal Steroid Hormones / Q000378:metabolism; D006801:Humans; D008297:Male; D012733:Sex Differentiation / Q000502:physiology*
D012739:Gonadal Steroid Hormones; D004958:Estradiol
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