ULTRASTRUCTURAL ANALYSIS OF PRIMARY CILIUM IN THE EMBRYONIC NERVOUS-TISSUE OF MOUSE
ULTRASTRUCTURAL ANALYSIS OF PRIMARY CILIUM IN THE EMBRYONIC NERVOUS-TISSUE OF MOUSE
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DOI：
10.1016/0736-5748(87)90047-5
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发表时间：
1987-01-01
影响因子：
1.8
通讯作者：
MEININGER, V
中科院分区：
文献类型：
--
作者：
COHEN, E;MEININGER, V
在胚胎神经系统中，纤毛器的形态和空间组织的原始细胞，神经上皮双极细胞，已经分析了从正面和水平的双极切片。初级纤毛伸入脑室液，位于脑室液和这些细胞的细胞质之间的界面。通常与基体和中心粒相关联，其结构成分是围绕管腔圆柱体均匀分布的九个微管双峰，没有中心双峰。纤毛短，基部厚，纤毛项链减少，9+0型。在其尖端，图案从7+0减少到2+0。基体不同于基体的motil纤毛的内部和外部片互连三联体从基部到顶端，附属基足的不断存在和睫状根的稀缺性。所有这些特征表明，在神经上皮双极细胞的睫状体是一个刚性的，极化和短暂的结构可能是重要的脑室液和发育中的神经系统之间的可能的交换。
In the embryonic nervous system, the morphology and spatial organization of the ciliary apparatus in the primordial cells, the neuroepithelial bipolar cells, has been analysed from frontal and horizontal ultrathin sections. Projecting into the ventricular fluid, the primary cilium is located just at the interface between the ventricular fluid and the cytoplasm of these cells. Always associated with a basal body and a centriole, their structural components are nine microtubule doublets equally spaced around the luminal cylinder without central doublet. The cilium is short with a thick base displaying a reduced ciliary necklace and a 9+0 pattern. In its tip, the pattern decreases from 7+0 to 2+0. The basal body differs from the basal body of the motil cilium by internal and external sheets interconnecting triplets from base to apex, the constant existence of an accessory basal foot and the scarcity of a ciliary rootlet. All these characteristics suggest that in the neuroepithelial bipolar cells the ciliary apparatus is a rigid, polarized and transient structure probably important in the possible exchange between the ventricular fluid and the developing nervous system.