STRUCTURE OF THE OLFACTORY-BULB OF THE HEDGEHOG (ERINACEUS-EUROPAEUS) - A GOLGI-STUDY OF THE INTRINSIC ORGANIZATION OF THE SUPERFICIAL LAYERS
STRUCTURE OF THE OLFACTORY-BULB OF THE HEDGEHOG (ERINACEUS-EUROPAEUS) - A GOLGI-STUDY OF THE INTRINSIC ORGANIZATION OF THE SUPERFICIAL LAYERS
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DOI：
10.1002/cne.903010208
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发表时间：
1990-11-08
影响因子：
2.5
通讯作者：
VALVERDE, F
中科院分区：
文献类型：
--
作者：
LOPEZMASCARAQUE, L;DECARLOS, JA;VALVERDE, F
用高尔基体法研究了食虫刺猬主要嗅球的僧帽细胞层、外网状层和球状层的内部结构。该研究完成了我们先前对同一受试者中颗粒细胞层中细胞类型的描述（Lopez-Mascaraque et al.，神经学比较杂志253：135-152，'' 86）。在本贡献的二尖瓣，内部和中间簇状细胞的形态描述与特别感兴趣的初级树突的肾小球簇的形成和排列，和二级树突的处置。外丛状层内有三种类型的内在细胞：货车盖胡氏细胞、卫星细胞和水平细胞。所有这些细胞都显示出不寻常的分支过程模式，难以归类为树突或轴突。卫星细胞的一些突起与二尖瓣或簇状细胞树突之间的密切关系被注意到，这表明这些细胞可能是抑制性的。外部簇状细胞进行了描述，并考虑了与其形态有关的几个方面，以将其与肾小球周围细胞和其余的簇状细胞区分开来。外部簇状细胞和肾小球周围细胞似乎是内在神经元，具有分布在肾小球周围区域的轴突，最有可能致力于将不同的嗅球联系起来。从比较的角度考虑了肾小球在肾小球层中的排列以及与其他哺乳动物不同的特征。
The intrinsic organization of the mitral cell, external plexiform, and glomerular layers of the main olfactory bulb of the insectivore hedgehog were studied with the Golgi method. This study completes our previous description of the cell types in the granule cell layer in the same subject (Lopez-Mascaraque et al., J. Comp. Neurol. 253:135-152, ''86). In the present contribution the morphology of mitral, internal, and middle tufted cells is described with particular interest in the formation and arrangement of glomerular tufts by the primary dendrites, and the disposition of the secondary dendrites. Three types of intrinsic cells were found in the external plexiform layer: Van Gehuchten cells, satellite cells, and horizontal cells. All these cells display unusual patterns of branching processes that were difficult to classify as dendritic or axonal. The close relationship between some processes of the satellite cells with the mitral or tufted cell dendrites is noted, suggesting that these cells may be inhibitory in nature. The external tufted cells are described, and several aspects pertaining to their morphology were considered in order to distinguish them from periglomerular cells and from the remaining tufted cells. External tufted and periglomerular cells appear to be intrinsic neurons, having axons distributed in the periglomerular region, most probably devoted to relating different olfactory glomeruli. The arrangement of glomeruli in the glomerular layer and distinctive charcteristics with respect to other mammals were considered from a comparative point of view.