Bianchi R, Gioia M
Institute of Human Anatomy, University of Milan, Italy.
Acta Anat (Basel). 1990;139(4):349-56.
A morphoquantitative study was carried out to provide detailed information regarding the cytoarchitecture and neuronal morphology of the nucleus of Darkschewitsch (ND) of man. The neuronal population showed heterogeneity of shape and size of the nerve cell bodies. Small and medium-sized neurons appeared scattered in a wide neuropil. In the Golgi material, two types of neurons were identified: multipolar and fusiform cells. Multipolar cells, which were the most numerous (77%), had 3-5 dendrites giving off primary bifurcations at a short distance from the nerve cell body. Sometimes dendrites and axons were seen to spread outside the ND. The fusiform cells had 1-2 dendrites emerging from the opposite poles of the elongated nerve cell bodies. The dendrites tended to run unbranched for long distances in the section plane before dichotomizing. The dendrites and axons of the fusiform cells always lay inside the ND. The cytoarchitectural features of the ND corresponded to the characters of the reticular formation so that the ND of man could be considered to be a typical reticular nucleus inside the central gray matter. The prevailing presence of multipolar neurons whose processes often spread outside the ND could suggest that the ND is a mainly projective nucleus.
进行了一项形态定量研究，以提供有关人类达克谢维奇核（ND）的细胞结构和神经元形态的详细信息。神经元群体在神经细胞体的形状和大小上表现出异质性。中小型神经元散在于广泛的神经毡中。在高尔基染色材料中，鉴定出两种类型的神经元：多极细胞和梭形细胞。多极细胞数量最多（77%），有3-5个树突，在距神经细胞体短距离处发出初级分支。有时可见树突和轴突延伸至ND之外。梭形细胞有1-2个树突，从细长神经细胞体的相对两极发出。树突在切片平面上往往不分支地延伸很长距离，然后再二分。梭形细胞的树突和轴突总是位于ND内部。ND的细胞结构特征与网状结构的特征相符，因此人类的ND可被认为是中央灰质内的典型网状核。多极神经元的大量存在，其突起常常延伸至ND之外，这可能表明ND是一个主要的投射核。
