Chronister R B, Farnell K E, Marco L A, White L E
Brain Res. 1976 May 21;108(1):37-46. doi: 10.1016/0006-8993(76)90162-1.
In the adult rodent, coronal sections of Golgi impregnations of the neostriatum display a compact segregation of axon fascicles, neuronal clusters, and dendritic bundles thus forming an areolar configuration. Isolated neurons are rarely seen. The dorsomedial region of the neostriatum appears free of axon fascicles and dendritic bundles. Horizontal and sagittal sections of the neostriatum show clusters of cells parallel to axon fascicles. The neurons exhibit spine-laden dendrites with an initial spine-free segment. Neonatal impregnations exhibit a different configuration. Neonatally, cells tend to cluster but there is no bundling of dendrites. Neurons are spine-free or have protospines on the soma and the dendrites, including the initial segment. Transition from neonate to adult configuration is discernible at about 15 days after birth. The neostriatum of carnivores exhibits a different structure from the rodent neostriatum. This difference is associated with a developed anterior limb of the internal capsule in the carnivore. The axon fascicle-free portion of the carnivore neostriatum lacks dendritic bundles and pallisades. Portions near the capsule with axon fascicles appear similar to the rodent neostriatum with dendritic bundlings and pallisading. Such findings emphasize the importance of total neuronal configuration (neuronal-architectonics) in morphologic analyses.
在成年啮齿动物中,新纹状体的高尔基染色冠状切片显示轴突束、神经元簇和树突束紧密分离,从而形成一种网隙状结构。很少能看到孤立的神经元。新纹状体的背内侧区域似乎没有轴突束和树突束。新纹状体的水平和矢状切片显示细胞簇与轴突束平行。神经元表现出充满棘突的树突,起始段无棘突。新生动物的染色显示出不同的结构。在新生期,细胞倾向于聚集,但树突没有成束。神经元无棘突,或在胞体和树突(包括起始段)上有原棘突。出生后约15天可看出从新生结构向成年结构的转变。食肉动物的新纹状体与啮齿动物的新纹状体结构不同。这种差异与食肉动物内囊前肢发达有关。食肉动物新纹状体无轴突束的部分没有树突束和栅栏状结构。靠近有轴突束的内囊部分看起来与有树突束和栅栏状结构的啮齿动物新纹状体相似。这些发现强调了整体神经元结构(神经元建筑学)在形态学分析中的重要性。