PMID- 9748522 OWN - NLM STAT- MEDLINE DCOM- 19981224 LR - 20190614 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 802 IP - 1-2 DP - 1998 Aug 17 TI - Functional integration among 5-hydroxytryptamine receptor families in the control of female rat sexual behavior. PG - 98-103 AB - Serotonin (5-HT) receptor interaction in the control of female rat lordosis behavior was examined. Ovariectomized rats, with bilateral implants in the ventromedial nucleus of the hypothalamus (VMN), were hormonally primed with 25 micrograms estradiol benzoate and 500 micrograms progesterone. Rats were infused with the 5-HT3 receptor antagonist, 3-tropanyl-indole-3 carbonylate (tropisetron; 500 ng), or were coinfused with the 5-HT3 receptor antagonist and the 5-HT2A/2C receptor agonist, 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI; 500, 1500, or 2000 ng). Additional ovariectomized, hormone-primed rats received bilateral VMN infusions with the 5-HT1A receptor agonist, 8-hydroxy-2-(di-n-propylamino) tetralin (8-OH-DPAT; 200 ng), or were coinfused with the 5-HT1A receptor agonist and the 5-HT3 receptor agonist, m-chlorophenyl-biguanide (mCPBG; 250, 500, or 1000 ng). Lordosis behavior was observed prior to VMN infusion, during the infusion and for 30 consecutive minutes thereafter. Tropisetron reduced the lordosis to mount (L/M) ratio in every animal investigated but the decline was attenuated by coinfusion with DOI. Similarly, the L/M ratio declined following infusion with 8-OH-DPAT and the decline was dose-dependently reduced by coinfusion with mCPBG. Only the 5-HT3 receptor agonist altered the quality of the lordosis reflex. These studies provide evidence that the effects of 5-HT on female rat lordosis behavior involve the integrated activity of at least 3 different 5-HT receptor families. FAU - Maswood, N AU - Maswood N AD - Department of Biology, Texas Woman's University, Denton 76204, USA. FAU - Caldarola-Pastuszka, M AU - Caldarola-Pastuszka M FAU - Uphouse, L AU - Uphouse L LA - eng GR - R01 HD28419/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Amphetamines) RN - 0 (Biguanides) RN - 0 (Drug Combinations) RN - 0 (Indoles) RN - 0 (Receptors, Serotonin) RN - 0 (Serotonin Antagonists) RN - 0 (Serotonin Receptor Agonists) RN - 6I819NIK1W (Tropisetron) RN - 78950-78-4 (8-Hydroxy-2-(di-n-propylamino)tetralin) RN - 910A4X901V (1-(3-chlorophenyl)biguanide) RN - OOM10GW9UE (4-iodo-2,5-dimethoxyphenylisopropylamine) SB - IM MH - 8-Hydroxy-2-(di-n-propylamino)tetralin/pharmacology MH - Amphetamines/pharmacology MH - Animals MH - Biguanides/pharmacology MH - Drug Combinations MH - Female MH - Indoles/pharmacology MH - Ovariectomy MH - Rats MH - Rats, Inbred Strains MH - Receptors, Serotonin/*physiology MH - Serotonin Antagonists/pharmacology MH - Serotonin Receptor Agonists/pharmacology MH - Sexual Behavior, Animal/*physiology MH - Tropisetron EDAT- 1998/09/28 00:00 MHDA- 1998/09/28 00:01 CRDT- 1998/09/28 00:00 PHST- 1998/09/28 00:00 [pubmed] PHST- 1998/09/28 00:01 [medline] PHST- 1998/09/28 00:00 [entrez] AID - S0006-8993(98)00554-X [pii] AID - 10.1016/s0006-8993(98)00554-x [doi] PST - ppublish SO - Brain Res. 1998 Aug 17;802(1-2):98-103. doi: 10.1016/s0006-8993(98)00554-x.