PMID- 19887773 OWN - NLM STAT- MEDLINE DCOM- 20100610 LR - 20211020 IS - 1423-0194 (Electronic) IS - 0028-3835 (Print) IS - 0028-3835 (Linking) VI - 91 IP - 2 DP - 2010 TI - Estrogen-induced sexual incentive motivation, proceptivity and receptivity depend on a functional estrogen receptor alpha in the ventromedial nucleus of the hypothalamus but not in the amygdala. PG - 142-54 LID - 10.1159/000255766 [doi] AB - The display of copulatory behaviors usually requires the presence of a mate and is, therefore, preceded by a search for and approach to a potential partner. The intensity of approach behaviors is determined by a process labeled sexual incentive motivation. Although it is known that female sexual motivation depends on estrogens, their site of action within the brain is unknown. In the present experiment, we obtained data relevant to this issue. An shRNA encoded within an adeno-associated viral (AAV) vector directed against the estrogen receptor alpha (ERalpha) gene (or containing a nonsense base sequence as a control treatment) was injected bilaterally into the ventromedial nucleus of the hypothalamus (VMN) or the posterodorsal amygdala (MePDA) of female rats. After an 80% reduction of the number of ERalpha in the VMN, sexual incentive motivation was absent after treatment with estradiol and progesterone. Proceptivity and receptivity were also much reduced, while the number of rejections was enhanced. Suppression of the ERalpha in the MePDA lacked these effects. Likewise, the inactive control AAV vector failed to modify any behavior. Thus, the ERalpha in the VMN, but not in the MePDA, is important for proceptivity and receptivity as well as for sexual incentive motivation. These results show that ERalpha in the VMN is crucial for the entire sequence of behavioral events from the processes leading to the establishment of sexual contact until the accomplishment of copulatory behaviors. CI - Copyright 2009 S. Karger AG, Basel. FAU - Spiteri, Thierry AU - Spiteri T AD - Department of Psychology, University of Tromso, Tromso, Norway. FAU - Musatov, Sergei AU - Musatov S FAU - Ogawa, Sonoko AU - Ogawa S FAU - Ribeiro, Ana AU - Ribeiro A FAU - Pfaff, Donald W AU - Pfaff DW FAU - Agmo, Anders AU - Agmo A LA - eng GR - HD 05751/HD/NICHD NIH HHS/United States GR - R37 HD005751/HD/NICHD NIH HHS/United States GR - R01 HD005751/HD/NICHD NIH HHS/United States GR - MH 38273/MH/NIMH NIH HHS/United States GR - R01 MH038273/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20091104 PL - Switzerland TA - Neuroendocrinology JT - Neuroendocrinology JID - 0035665 RN - 0 (Estrogen Receptor alpha) RN - 0 (RNA, Small Interfering) RN - 4G7DS2Q64Y (Progesterone) RN - 4TI98Z838E (Estradiol) SB - IM MH - Amygdala/*physiology MH - Animals MH - Copulation/*physiology MH - Estradiol/*pharmacology MH - Estrogen Receptor alpha/*genetics/metabolism MH - Female MH - Gene Knockdown Techniques MH - Male MH - Ovariectomy MH - Posture MH - Progesterone/pharmacology MH - RNA, Small Interfering/pharmacology MH - Rats MH - Rats, Wistar MH - Sexual Behavior, Animal/*physiology MH - Ventromedial Hypothalamic Nucleus/*physiology PMC - PMC2918652 EDAT- 2009/11/06 06:00 MHDA- 2010/06/11 06:00 PMCR- 2011/03/01 CRDT- 2009/11/06 06:00 PHST- 2008/10/21 00:00 [received] PHST- 2009/05/23 00:00 [accepted] PHST- 2009/11/06 06:00 [entrez] PHST- 2009/11/06 06:00 [pubmed] PHST- 2010/06/11 06:00 [medline] PHST- 2011/03/01 00:00 [pmc-release] AID - 000255766 [pii] AID - nen0091-0142 [pii] AID - 10.1159/000255766 [doi] PST - ppublish SO - Neuroendocrinology. 2010;91(2):142-54. doi: 10.1159/000255766. Epub 2009 Nov 4.