PMID- 22565217 OWN - NLM STAT- MEDLINE DCOM- 20121106 LR - 20131121 IS - 1095-6867 (Electronic) IS - 0018-506X (Linking) VI - 62 IP - 1 DP - 2012 Jun TI - Sexual responses of the male rat medial preoptic area and medial amygdala to estrogen I: site specific suppression of estrogen receptor alpha. PG - 50-7 LID - 10.1016/j.yhbeh.2012.04.018 [doi] AB - Male rat copulation is mediated by estrogen-sensitive neurons in the medial preoptic area (MPO) and medial amygdala (MEA); however, the mechanisms through which estradiol (E(2)) acts are not fully understood. We hypothesized that E(2) acts through estrogen receptor alpha (ERalpha) in the MPO and MEA to promote male mating behavior. Antisense oligodeoxynucleotides (AS-ODN) complementary to ERalpha mRNA were bilaterally infused via minipumps into either brain area to block the synthesis of ERalpha, which we predicted would reduce mating. Western blot analysis and immunocytochemistry revealed a knockdown of ERalpha expression in each brain region; however, compared to saline controls, males receiving AS-ODN to the MPO showed significant reductions in all components of mating, whereas males receiving AS-ODN to the MEA continued to mate normally. These results suggest that E(2) acts differently in these brain regions to promote the expression of male rat sexual behavior and that ERalpha in the MPO, but not in the MEA, promotes mating. CI - Copyright (c) 2012 Elsevier Inc. All rights reserved. FAU - Paisley, Jacquelyn C AU - Paisley JC AD - Department of Biology, Georgia State University, Atlanta, GA 30302-4010, USA. FAU - Huddleston, Gloria G AU - Huddleston GG FAU - Carruth, Laura L AU - Carruth LL FAU - Petrulis, Aras AU - Petrulis A FAU - Grober, Matthew S AU - Grober MS FAU - Clancy, Andrew N AU - Clancy AN LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20120504 PL - United States TA - Horm Behav JT - Hormones and behavior JID - 0217764 RN - 0 (Estrogen Receptor alpha) RN - 0 (Oligodeoxyribonucleotides, Antisense) RN - 4TI98Z838E (Estradiol) SB - IM MH - Amygdala/drug effects/*physiology MH - Animals MH - Copulation/drug effects/*physiology MH - Estradiol/*metabolism/pharmacology MH - Estrogen Receptor alpha/antagonists & inhibitors/genetics/*metabolism MH - Female MH - Male MH - Oligodeoxyribonucleotides, Antisense/genetics MH - Preoptic Area/drug effects/*physiology MH - Rats MH - Rats, Sprague-Dawley/genetics/*physiology EDAT- 2012/05/09 06:00 MHDA- 2012/11/07 06:00 CRDT- 2012/05/09 06:00 PHST- 2012/01/11 00:00 [received] PHST- 2012/03/31 00:00 [revised] PHST- 2012/04/28 00:00 [accepted] PHST- 2012/05/09 06:00 [entrez] PHST- 2012/05/09 06:00 [pubmed] PHST- 2012/11/07 06:00 [medline] AID - S0018-506X(12)00140-7 [pii] AID - 10.1016/j.yhbeh.2012.04.018 [doi] PST - ppublish SO - Horm Behav. 2012 Jun;62(1):50-7. doi: 10.1016/j.yhbeh.2012.04.018. Epub 2012 May 4.