Projections to higher olfactory centers from subdivisions of the antennal lobe macroglomerular complex of the male silkmoth
Projections to higher olfactory centers from subdivisions of the antennal lobe macroglomerular complex of the male silkmoth
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DOI：
10.1093/chemse/28.2.113
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发表时间：
2003-02-01
期刊：
影响因子：
3.5
通讯作者：
Wada, S
中科院分区：
文献类型：
--
作者：
Kanzaki, R;Soo, K;Wada, S
巨球复合体（MGC）是雄蛾脑中雌性性信息素嗅觉信息的一级突触加工中心。我们利用连续系列共聚焦切片图像对雄蚕的MGC进行三维重建，研究了雄蚕的MGC细分。B。mori MGC由类似于Manduca sexta的三个亚部组成：积云、环形和马蹄形。细胞内记录和染色显示，MGC投射神经元对信息素刺激的反应与它们在MGC各亚部（丘、环和马蹄）的树突分支有关，每个亚部特异性投射神经元将信息传递到蘑菇体和下外侧前脑的不同区域。我们发现，主要的信息素成分的信息被转移到内侧部分的下外侧前脑通过三个不同的触角脑通路。虽然人们普遍认为，蘑菇体的花萼和下外侧前脑是信息素信息的目标网站从MGC在蛾，我们的研究结果表明，内侧部分的下外侧前脑可能是一个更重要的处理网站的主要信息素信息的B。森。
The macroglomerular complex (MGC) is the first-order center for synaptic processing of olfactory information about the female sex pheromone in the male moth brain. We have investigated the MGC subdivisions of the male silkmoth Bombyx mori by use of three-dimensional reconstruction of the MGC from sequential series of confocal slice images. The B. mori MGC consists of three subdivisions similar to those of Manduca sexta: the cumulus, toroid and horseshoe. intracellular recording and staining revealed that responses of MGC projection neurons to pheromonal stimulation correlate with their dendritic arborizations in the subdivisions of the MGC (the cumulus, toroid and horseshoe) and each subdivision specific projection neuron transmits information to different regions in the calyces of the mushroom body and the inferior lateral protocerebrum. We revealed that major pheromone component information is transferred to the medial part of the inferior lateral protocerebrum through three different antennocerebral pathways. Although it is generally accepted that the calyces of the mushroom body and the inferior lateral protocerebrum are the target sites for pheromone information from the MGC in moths, our results suggest that the medial part of the inferior lateral protocerebrum may be a more important processing site for major pheromonal information in B. mori.