PMID- 15488538 OWN - NLM STAT- MEDLINE DCOM- 20050317 LR - 20081121 IS - 0031-9384 (Print) IS - 0031-9384 (Linking) VI - 83 IP - 2 DP - 2004 Nov 15 TI - Importance of olfactory and vomeronasal systems for male sexual function. PG - 177-87 AB - Chemosensory cues stimulate male sexual arousal and behavior. The main olfactory system has an important role in attracting males to estrous females, and the vomeronasal receptors are important for activating accessory olfactory pathways that engage mating behavior in a sexually dimorphic manner. The gonadotropin releasing hormone (GnRH) neurons like the vomeronasal organ (VNO) neurons take their origin in the olfactory placode and migrate to the basal forebrain along pathfinder axons that take their origin in the developing VNO. The maturation of both systems is synchronized in time such that the early postnatal testosterone surge masculinizes the VNO neural relay en route to the medio preoptic area (MPOA). Although VNO slices and VNO receptor neurons in culture respond to volatile odors, in vivo electrophysiological recordings at the first relay in the accessory olfactory bulb (AOB) are silent until the male makes active nuzzling investigations of the female. The VNO neurons may therefore respond to volatiles that are transported into the organ on carrier peptides that themselves may play a part in receptor activation. In the context of modern molecular phylogenetic studies, it is becoming less likely that pheromones acting via the VNO have any part to play in human sexual behavior, but the possibility exists for conserved VNO genes influencing human reproduction via fertilization. FAU - Keverne, E B AU - Keverne EB AD - Sub-Department of Animal Behaviour, University of Cambridge, Madingley, Cambridge, CB3 8AA, UK. ebk10@cus.cam.ac.uk LA - eng PT - Journal Article PT - Review PL - United States TA - Physiol Behav JT - Physiology & behavior JID - 0151504 RN - 0 (Pheromones) SB - IM MH - Animals MH - Chemoreceptor Cells/physiology MH - Humans MH - Major Histocompatibility Complex/physiology MH - Male MH - Olfactory Pathways/*physiology MH - Pheromones/physiology MH - Sex Characteristics MH - Sexual Behavior/*physiology MH - Sexual Behavior, Animal/*physiology MH - Smell/*physiology MH - Vomeronasal Organ/*physiology RF - 85 EDAT- 2004/10/19 09:00 MHDA- 2005/03/18 09:00 CRDT- 2004/10/19 09:00 PHST- 2004/10/19 09:00 [pubmed] PHST- 2005/03/18 09:00 [medline] PHST- 2004/10/19 09:00 [entrez] AID - S0031-9384(04)00351-8 [pii] AID - 10.1016/j.physbeh.2004.08.013 [doi] PST - ppublish SO - Physiol Behav. 2004 Nov 15;83(2):177-87. doi: 10.1016/j.physbeh.2004.08.013.