PMID- 11850023 OWN - NLM STAT- MEDLINE DCOM- 20020517 LR - 20190901 IS - 0047-6374 (Print) IS - 0047-6374 (Linking) VI - 123 IP - 6 DP - 2002 Mar 31 TI - Age differentially influences estrogen receptor-alpha (ERalpha) and estrogen receptor-beta (ERbeta) gene expression in specific regions of the rat brain. PG - 593-601 AB - Estradiol's ability to influence neurochemical events that are critical to female reproductive cyclicity and behavior decreases with age. We tested the hypothesis that decreases in estrogen receptor-alpha (ERalpha) and/or ERbeta mRNA explain the brain's declining responsiveness to estradiol. We assessed ERalpha and ERbeta mRNA levels in intact and ovariectomized estradiol-treated rats. ERbeta mRNA was detected in several brain regions and decreased by middle-age in the cerebral cortex and supraoptic nucleus of estradiol-treated rats. ERbeta mRNA levels exhibited a diurnal rhythm in the suprachiasmatic nucleus of young and middle-aged rats and this rhythm was blunted in old rats. We examined ERalpha mRNA in the periventricular preoptic, medial preoptic, ventromedial and arcuate nuclei, and it was decreased only in the periventricular preoptic nucleus of the old rats. In summary, the expression of ERalpha and ERbeta mRNAs is differentially modulated in the aging brain and changes are region specific. FAU - Wilson, Melinda E AU - Wilson ME AD - Department of Physiology, College of Medicine, University of Kentucky, 800 Rose Street, Lexington, KY 40536, USA. FAU - Rosewell, Katherine L AU - Rosewell KL FAU - Kashon, Michael L AU - Kashon ML FAU - Shughrue, Paul J AU - Shughrue PJ FAU - Merchenthaler, Istvan AU - Merchenthaler I FAU - Wise, Phyllis M AU - Wise PM LA - eng GR - AG02224/AG/NIA NIH HHS/United States GR - AG05818/AG/NIA NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - Ireland TA - Mech Ageing Dev JT - Mechanisms of ageing and development JID - 0347227 RN - 0 (Estrogen Receptor alpha) RN - 0 (Estrogen Receptor beta) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Estrogen) RN - 4TI98Z838E (Estradiol) SB - IM MH - Aging/*genetics/metabolism MH - Animals MH - Brain/*metabolism MH - Cerebral Cortex/metabolism MH - Estradiol/metabolism MH - Estrogen Receptor alpha MH - Estrogen Receptor beta MH - Female MH - *Gene Expression MH - Ovariectomy MH - RNA, Messenger/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, Estrogen/*genetics MH - Suprachiasmatic Nucleus/metabolism MH - Supraoptic Nucleus/metabolism EDAT- 2002/02/19 10:00 MHDA- 2002/05/23 10:01 CRDT- 2002/02/19 10:00 PHST- 2002/02/19 10:00 [pubmed] PHST- 2002/05/23 10:01 [medline] PHST- 2002/02/19 10:00 [entrez] AID - S0047637401004067 [pii] AID - 10.1016/s0047-6374(01)00406-7 [doi] PST - ppublish SO - Mech Ageing Dev. 2002 Mar 31;123(6):593-601. doi: 10.1016/s0047-6374(01)00406-7.