PMID- 8208763 OWN - NLM STAT- MEDLINE DCOM- 19940711 LR - 20190712 IS - 0091-3057 (Print) IS - 0091-3057 (Linking) VI - 47 IP - 3 DP - 1994 Mar TI - Hypothalamic infusion of the 5-HT2/1C agonist, DOI, prevents the inhibitory actions of the 5-HT1A agonist, 8-OH-DPAT, on lordosis behavior. PG - 467-70 AB - Sexually receptive, intact, proestrous rats were infused bilaterally into the ventromedial nucleus of the hypothalamus (VMN) with 200 ng of the 5-HT1A agonist, 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT), with 2000 ng of the 5-HT2/1C agonist, (+/-)-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane HCl (DOI), or with both 8-OH-DPAT and DOI. Alone, VMN infusions of 8-OH-DPAT, but not DOI, inhibited lordosis behavior. When 2000 ng DOI was infused simultaneously with 8-OH-DPAT, the inhibitory effects of 8-OH-DPAT were completely abolished. These results suggest that neural sites responsible for the reported facilitatory effects of 5-HT2/1C agonists on lordosis behavior coexist in the VMN with those sites in which 5-HT1A agonists are effective in reducing lordosis behavior. In contrast to the protective action of the 5-HT2/1C receptor agonist following VMN infusion, no protection was seen when both DOI and 8-OH-DPAT were administered intraperitoneally. Thus, the interaction of these two receptor subtypes in the control of lordosis behavior may be different in regions outside the VMN. FAU - Uphouse, L AU - Uphouse L AD - Department of Biology, Texas Woman's University, Denton 76204. FAU - Andrade, M AU - Andrade M FAU - Caldarola-Pastuszka, M AU - Caldarola-Pastuszka M FAU - Maswood, S AU - Maswood S LA - eng GR - GM08256/GM/NIGMS NIH HHS/United States GR - R01 HD28419/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Pharmacol Biochem Behav JT - Pharmacology, biochemistry, and behavior JID - 0367050 RN - 0 (Amphetamines) RN - 0 (Serotonin Receptor Agonists) RN - 78950-78-4 (8-Hydroxy-2-(di-n-propylamino)tetralin) RN - OOM10GW9UE (4-iodo-2,5-dimethoxyphenylisopropylamine) SB - IM MH - 8-Hydroxy-2-(di-n-propylamino)tetralin/administration & dosage/*antagonists & inhibitors/pharmacology MH - Amphetamines/administration & dosage/*pharmacology MH - Animals MH - Female MH - Injections MH - Injections, Intraperitoneal MH - Posture/*physiology MH - Proestrus/physiology MH - Rats MH - Rats, Inbred F344 MH - Serotonin Receptor Agonists/administration & dosage/*pharmacology MH - Sexual Behavior, Animal/*drug effects MH - Ventromedial Hypothalamic Nucleus/anatomy & histology/*physiology EDAT- 1994/03/01 00:00 MHDA- 1994/03/01 00:01 CRDT- 1994/03/01 00:00 PHST- 1994/03/01 00:00 [pubmed] PHST- 1994/03/01 00:01 [medline] PHST- 1994/03/01 00:00 [entrez] AID - 0091-3057(94)90144-9 [pii] AID - 10.1016/0091-3057(94)90144-9 [doi] PST - ppublish SO - Pharmacol Biochem Behav. 1994 Mar;47(3):467-70. doi: 10.1016/0091-3057(94)90144-9.