Evidence that the deficit in sexual behavior in adult rats neonatally exposed to citalopram is a consequence of 5-HT1 receptor stimulation during development.
Neonatal (postnatal days 8-21) exposure of rats to the selective serotonin reuptake inhibitor (SSRI), citalopram, results in persistent changes in behavior including decreased sexual activity in adult animals. We hypothesized that this effect was a consequence of abnormal stimulation of 5-HT(1A) and/or 5-HT(1B) receptors as a result of increased synaptic availability of serotonin during a critical period of development. We examined whether neonatal exposure to a 5-HT(1A) (8OH-DPAT) or a 5-HT(1B) (CGS 12066B) receptor agonist can mimic the effect of neonatal exposure to citalopram on adult sexual behavior. Results showed that neonatal treatment with 5-HT(1B) receptor agonist robustly impaired sexual behavior similar to the effect of citalopram, whereas exposure to 5-HT(1A) receptor agonist only moderately influenced male sexual activity in adult animals. These data support the hypothesis that stimulation of serotonin autoreceptors during development contributes to the adult sexual deficit in rats neonatally exposed to citalopram.
Maciag
Dorota
D
Departments of Psychiatry and Human Behavior, University of Mississippi Medical Center, 2500 North State St., Jackson, MS 39216-4505, USA.
Coppinger
David
D
Paul
Ian A
IA
D017371:8-Hydroxy-2-(di-n-propylamino)tetralin / Q000494:pharmacology; D000367:Age Factors; D000704:Analysis of Variance; D000818:Animals; D000831:Animals, Newborn; D001522:Behavior, Animal / Q000187:drug effects; D015283:Citalopram / Q000008:administration & dosage*; D005260:Female; D008297:Male; D011247:Pregnancy; D011810:Quinoxalines / Q000494:pharmacology; D051381:Rats; D020318:Rats, Long-Evans; D011930:Reaction Time / Q000187:drug effects; D044263:Receptors, Serotonin, 5-HT1 / Q000502:physiology*; D012702:Serotonin Antagonists / Q000494:pharmacology; D017367:Selective Serotonin Reuptake Inhibitors / Q000008:administration & dosage*; D012726:Sexual Behavior, Animal / Q000187:drug effects*; D012735:Sexual Dysfunction, Physiological / Q000139:chemically induced*
D017371:8-Hydroxy-2-(di-n-propylamino)tetralin; D015283:Citalopram; D011810:Quinoxalines; D044263:Receptors, Serotonin, 5-HT1; D012702:Serotonin Antagonists; D017367:Selective Serotonin Reuptake Inhibitors; C052561:CGS 12066B