Fix J D
Acta Anat (Basel). 1975;93(2):228-39.
A morphometric analysis of the dentate nucleus of A. ater was performed. Numerical cell densities, cell size, and gray cell coefficients were determined. The selection of this primate was predicated upon phylogenetic and cytoarchitectural criteria. This griseum is cytomorphologically identical to the human dentatum. Quantification was made with both phase contrast and bright-field optics. The gray cell coefficients were determined by Haug's point-counting method. The dentate nucleus is characterized by the presence of large and small neurons and the typical three glial elements. The ratio between the numerical cell densities of the large and small cells was 1:1. The oligodendrocytes had the highest numerical cell density, followed by the astrocytes, and the Hortega cells. The total glia index was computed to be 13.14. In the corpus medullare, the oligodendrocytes presented the highest numerical cell density; the numerical cell densities of the Hortega cells and the astrocytes were not significantly different from each other. Linear measurements of the glial nuclei revealed that the astrocytes were the largest of the glial elements, showing no difference in size between gray and white matter. The size of the oligodendrocytes in the dentate nucleus corresponded to their size in the white matter. In the corpus medullare, the Hortega cell nuclei are shorter in length than those found in the gray substance. The gray cell coefficients were transformed into volume percentages. Only 9% of the dentate nucleus is composed of nerve cell perikarya and glial cell nuclei; the glial cell nuclei represent only 2% of the total white matter. The morphometric differences existing between the cellular elements in both gray and white substance is correlated with the functional roles ascribed to the neuroglia in relation to capillary and neuronal density. The glial 'satellites' are predominately oligodendrocytes.
对黑猩猩齿状核进行了形态计量学分析。测定了细胞数量密度、细胞大小和灰质细胞系数。选择这种灵长类动物是基于系统发育和细胞结构标准。该灰质在细胞形态学上与人类齿状核相同。使用相差显微镜和明视野光学显微镜进行定量分析。灰质细胞系数通过豪格点计数法测定。齿状核的特征是存在大、小神经元以及典型的三种神经胶质成分。大、小细胞的数量密度之比为1:1。少突胶质细胞的数量密度最高，其次是星形胶质细胞和霍特加细胞。计算得出总神经胶质指数为13.14。在髓质中，少突胶质细胞的数量密度最高；霍特加细胞和星形胶质细胞的数量密度彼此无显著差异。对神经胶质细胞核的线性测量显示，星形胶质细胞是最大的神经胶质成分，在灰质和白质中的大小无差异。齿状核中少突胶质细胞的大小与白质中的大小相当。在髓质中，霍特加细胞核的长度比灰质中的短。灰质细胞系数被转换为体积百分比。齿状核中仅9%由神经细胞胞体和神经胶质细胞核组成；神经胶质细胞核仅占总白质的2%。灰质和白质中细胞成分之间存在的形态计量学差异与神经胶质在毛细血管和神经元密度方面所赋予的功能作用相关。神经胶质“卫星细胞”主要是少突胶质细胞。
