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J Comp Neurol

Title:		Pheromone processing center in the protocerebrum of Bombyx mori revealed by nitric oxide-induced anti-cGMP immunocytochemistry
Author(s):		Seki Y; Aonuma H; Kanzaki R;
Address:		"Institute of Biological Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan"
Journal Title:		J Comp Neurol
Year:		2005
Volume:		481
Issue:		4
Page Number:		340 - 351
DOI:		10.1002/cne.20392
ISSN/ISBN:		0021-9967 (Print) 0021-9967 (Linking)
Abstract:		"The antennal lobe (AL) of the male silkworm moth Bombyx mori contains 60 +/- 2 ventrally located antennal glomeruli and a dorsal macroglomerular complex (MGC) consisting of three subdivisions. The response patterns of MGC projection neurons (PNs) to pheromonal stimuli correlate with their dendritic arborization in the subdivisions of the MGC. However, the representation of this pheromonal information in the lateral protocerebrum (LPC), which is the target site of the AL PNs, is not well known. We performed nitric oxide (NO)-induced anti-cGMP immunohistochemistry and found that the PNs which respond to the major pheromone component (bombykol) express strong immunoreactivity. They project to a specific area, the delta area in the inferior lateral protocerebrum (DeltaILPC), which clearly represents the processing center for the major pheromone component. Furthermore, to examine the projection sites in the LPC from each subdivision of the MGC, we performed double-labeling of each type of MGC-PNs, combined with NO-induced anti-cGMP immunohistochemistry. We revealed that projections from each subdivision of the MGC overlapped or separated in specific regions of the DeltaILPC. These results suggest that integration and segregation of pheromone information may occur in the DeltaILPC"
Keywords:		"Animals Bombyx/anatomy & histology/*physiology Brain/cytology/*physiology *Brain Mapping Cyclic GMP/metabolism Dendrites/metabolism Imaging, Three-Dimensional Immunohistochemistry Male Neurons, Afferent/physiology Nitric Oxide/metabolism Olfactory Pathway;"
Notes:		"MedlineSeki, Yoichi Aonuma, Hitoshi Kanzaki, Ryohei eng Research Support, Non-U.S. Gov't 2004/12/14 J Comp Neurol. 2005 Jan 24; 481(4):340-51. doi: 10.1002/cne.20392"