MORPHOLOGY AND SPATIAL-DISTRIBUTION OF BEE ANTENNAL LOBE INTERNEURONS RESPONSIVE TO ODORS
MORPHOLOGY AND SPATIAL-DISTRIBUTION OF BEE ANTENNAL LOBE INTERNEURONS RESPONSIVE TO ODORS
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DOI：
10.1093/chemse/18.2.101
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发表时间：
1993-04-01
期刊：
影响因子：
3.5
通讯作者：
MASSON, C
中科院分区：
文献类型：
--
作者：
FONTA, C;SUN, XJ;MASSON, C
使用光学和共聚焦显微镜对离子电渗染色（钴或荧光黄）蜜蜂触角叶中间神经元进行整体分析，使我们能够识别和分类四种主要类型的嗅觉反应神经元。它们在肾小球间隙内和整个触角叶的肾小球之间的形态和空间分布不同。仅限于触角叶的两种类型的局部中间神经元（LIN）是：（i）LIN人在其分支的所有肾小球中呈现出明显相似的乔木密度，细神经突仅限于肾小球的核心； (ii) 异种 LIN，也是多球体，与人 LIN 的不同之处在于，在一个特定的肾小球中具有高密度的神经突树枝化，并具有侵入核心并到达该肾小球的最外层部分的细分支。两种类型的输出中间神经元（ON）在触角叶中具有树突，而轴突在其他大脑部分中突出：（i）Uni ON，其树突仅侵入一个肾小球的核心和外围； (ii) Pluri ON，多球状，树突仅限于肾小球核心。 Uni ON 轴突沿着正中束并投射到原大脑的蘑菇体和侧叶。相反，Pluri ON 的轴突遵循触角肾小球束的几个减法，并投射到各种原大脑结构或对侧触角叶。局部中间神经元和输出中间神经元均侵入许多肾小球（分别占总数的1/3至2/3和> 50%），大多数分布在不同的肾小球群体中。蜜蜂触角叶神经元结构中表现出的高度复杂性可能支持其他地方描述的高度功能复杂性（Fonta 等人，1991；Sun 等人，提交）。
Wholemount analysis with optic and confocal microscopy of iontophoretically stained (cobalt or Lucifer Yellow) bee antennal lobe interneurones led us to identify and classify, four main types of olfactory responsive neurones. differing in their morphology and spatial distribution within the glomerular space and amongst the glomeruli in the whole antennal lobe. Two types of local interneurones (LIN), restricted to the antennal lobe were: (i) Homo LIN presenting an apparently similar density of arbors among all the glomeruli where they branch, the fine neurites being limited to the core of the glomeruli; (ii) Hetero LIN, also pluriglomerular, differ from the Homo LIN by a high dense neurite arborization in one particular glomerulus with fine branches invading the core and reaching the outermost part of this glomerulus. Two types of output interneurones (ON) having dendrites in the antennal lobe and axons projecting in other brain parts were: (i) Uni ON with dendrites invading the core and periphery of only one glomerulus; (ii) Pluri ON, pluriglomerular, with dendrites limited to the glomerular cores. The Uni ON axons follow the median tract and project to the mushroom bodies and lateral lobe of the protocerebrum. On the contrary, axons of Pluri ON follow several subtracts of the antenno-glomerular tract and project to various protocerebal structures or to the contralateral antennal lobe. Local interneurones and output interneurones both invade many glomeruli (1/3 to 2/3 and > 50 % of the total number, respectively), most being distributed in the different glomerular populations. The high complexity demonstrated in the architecture of the bee antennal lobe neurones might support the high functional complexity described elsewhere (Fonta et al., 1991; Sun et al., submitted).