| Title: | Blockage of urinary responses by inhibitors for IP3-mediated pathway in rat vomeronasal sensory neurons |
| Author(s): | Inamura K; Kashiwayanagi M; Kurihara K; |
| Address: | "Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan" |
| DOI: | 10.1016/s0304-3940(97)00655-1 |
| ISSN/ISBN: | 0304-3940 (Print) 0304-3940 (Linking) |
| Abstract: | "The mammalian vomeronasal system is involved in the effects of urinary chemicals on gonadal functions and sexual behaviors. For example, exposure to urine affects the timing of oestrous cycles in rats. Rat vomeronasal sensory neurons in slice preparation were studied under on-cell patch clamp conditions. We found that urine excreted from male Wistar rats increased impulse frequency in vomeronasal sensory neurons of female Wistar rats. The urinary responses were blocked by an inositol-1,4,5-trisphosphate (IP3)-channel inhibitor (10 microM ruthenium red) or phospholipase C inhibitors (10 microM U-73122 and 1 mM neomycin), suggesting that pheromone-like substances in the urine induce the response in the rat vomeronasal sensory neurons via the IP3-dependent transduction pathway" |
| Keywords: | "Animals Enzyme Inhibitors/pharmacology Estrenes/pharmacology Female In Vitro Techniques Inositol 1, 4, 5-Trisphosphate/*antagonists & inhibitors Male Neomycin/pharmacology Neurons, Afferent/*physiology Patch-Clamp Techniques Pyrrolidinones/pharmacology Rats;" |
| Notes: | "MedlineInamura, K Kashiwayanagi, M Kurihara, K eng Research Support, Non-U.S. Gov't Ireland 1997/11/14 Neurosci Lett. 1997 Sep 19; 233(2-3):129-32. doi: 10.1016/s0304-3940(97)00655-1" |
