PMID- 16510843 OWN - NLM STAT- MEDLINE DCOM- 20060725 LR - 20141120 IS - 0379-864X (Print) IS - 0379-864X (Linking) VI - 31 IP - 4 DP - 2006 May TI - Modification of synapse formation of accessory olfactory bulb neurons by coculture with vomeronasal neurons. PG - 371-8 AB - Previously, a coculture system of accessory olfactory bulb (AOB) neurons and vomeronasal (VN) neurons was established for studying the functional roles of AOB neurons in pheromonal signal processing. In this study, the effect of VN neurons on the development of AOB neurons was examined in a coculture system. Spine density was quantitatively measured for various culture periods of 21, 28, 36, and 42 days in vitro. The densities of dendritic spines were lower in the coculture than in single culture for all periods in vitro. Synapse formation on spines was analyzed immunocytochemically using an anti-synaptophysin antibody. The ratio of the density of synaptophysin-immunopositive spine/total spine density was larger in the coculture than in the single culture. The volume of spine head was larger in the coculture than in single culture. These changes were not observed in the coculture in which there was no physical contact between AOB neurons and VN neurons. These observations suggest that synapse formation on the spines of AOB neurons is modified by physical contact with VN neurons. FAU - Ishimatsu, Yuuki AU - Ishimatsu Y AD - Laboratory of Anatomy and Cell Biology, Department of Neuroscience Basic Technology, Tokyo Metropolitan Institute for Neuroscience, 2-6 Musashidai, Fuchu, Tokyo 183-8526, Japan. FAU - Moriya-Ito, Keiko AU - Moriya-Ito K FAU - Muramoto, Kazuyo AU - Muramoto K FAU - Ichikawa, Masumi AU - Ichikawa M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060301 PL - England TA - Chem Senses JT - Chemical senses JID - 8217190 RN - 0 (Actins) RN - 0 (enhanced green fluorescent protein) RN - 147336-22-9 (Green Fluorescent Proteins) SB - IM MH - Actins/chemistry/metabolism MH - Animals MH - Cells, Cultured MH - Coculture Techniques MH - Dendritic Spines/physiology/ultrastructure MH - Green Fluorescent Proteins/chemistry/metabolism MH - Olfactory Bulb/*cytology/physiology MH - Olfactory Receptor Neurons/*cytology/metabolism/physiology MH - Rats MH - Rats, Wistar MH - Sensitivity and Specificity MH - Synapses/physiology/*ultrastructure MH - Vomeronasal Organ/*cytology/metabolism/physiology EDAT- 2006/03/03 09:00 MHDA- 2006/07/26 09:00 CRDT- 2006/03/03 09:00 PHST- 2006/03/03 09:00 [pubmed] PHST- 2006/07/26 09:00 [medline] PHST- 2006/03/03 09:00 [entrez] AID - bjj041 [pii] AID - 10.1093/chemse/bjj041 [doi] PST - ppublish SO - Chem Senses. 2006 May;31(4):371-8. doi: 10.1093/chemse/bjj041. Epub 2006 Mar 1.