title: Estrogen receptor-α and estrogen receptor-β in the uterine vascular endothelium during pregnancy: functional implications for regulating uterine blood flow.
abstract: The steroid hormone estrogen and its classical estrogen receptors (ERs), ER-α and ER-β, have been shown to be partly responsible for the short- and long-term uterine endothelial adaptations during pregnancy. The ER-subtype molecular and structural differences coupled with the differential effects of estrogen in target cells and tissues suggest a substantial functional heterogeneity of the ERs in estrogen signaling. In this review we discuss (1) the role of estrogen and ERs in cardiovascular adaptations during pregnancy, (2) in vivo and in vitro expression of ERs in uterine artery endothelium during the ovarian cycle and pregnancy, contrasting reproductive and nonreproductive arterial endothelia, (3) the structural basis for functional diversity of the ERs and estrogen subtype selectivity, (4) the role of estrogen and ERs on genomic responses of uterine artery endothelial cells, and (5) the role of estrogen and ERs on nongenomic responses in uterine artery endothelia. These topics integrate current knowledge of this very rapidly expanding scientific field with diverse interpretations and hypotheses regarding the estrogenic effects that are mediated by either or both ERs and their relationship with vasodilatory and angiogenic vascular adaptations required for modulating the dramatic physiological rises in uteroplacental perfusion observed during normal pregnancy.
authors.affiliation: Department of Obstetrics/Gynecology, Perinatal Research Laboratories, University of Wisconsin-Madison, Madison, Wisconsin, USA.
authors.forename: Mayra B
authors.initials: MB
authors.lastname: Pastore
authors.forename: Sheikh O
authors.initials: SO
authors.lastname: Jobe
authors.forename: Jayanth
authors.initials: J
authors.lastname: Ramadoss
authors.forename: Ronald R
authors.initials: RR
authors.lastname: Magness
mesh_terms: D000818:Animals; D004730:Endothelium, Vascular / Q000166:cytology / Q000378:metabolism*; D044127:Epigenesis, Genetic; D047628:Estrogen Receptor alpha / Q000819:agonists / Q000737:chemistry / Q000378:metabolism*; D047629:Estrogen Receptor beta / Q000819:agonists / Q000737:chemistry / Q000378:metabolism*; D004967:Estrogens / Q000378:metabolism; D005260:Female; D005786:Gene Expression Regulation; D006801:Humans; D010053:Ovary / Q000166:cytology / Q000378:metabolism; D011247:Pregnancy / Q000502:physiology*; D011257:Pregnancy Proteins / Q000737:chemistry / Q000378:metabolism*; D020033:Protein Isoforms / Q000819:agonists / Q000737:chemistry / Q000378:metabolism; D012039:Regional Blood Flow; D015398:Signal Transduction; D055988:Uterine Artery / Q000166:cytology / Q000378:metabolism; D014599:Uterus / Q000098:blood supply*
chemical_list: C506487:ESR1 protein, human; D047628:Estrogen Receptor alpha; D047629:Estrogen Receptor beta; D004967:Estrogens; D011257:Pregnancy Proteins; D020033:Protein Isoforms