Primitive Coronet Cells in the Brain of Oikopleura (Appendicularia, Tunicata)
Primitive Coronet Cells in the Brain of Oikopleura (Appendicularia, Tunicata)
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Oikopleura（附肢动物、被囊动物）大脑中的原始冠状细胞
DOI：
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发表时间：
1975
期刊：
影响因子：
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通讯作者：
R. Olsson
中科院分区：
文献类型：
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作者：
R. Olsson
本文描述了一种特殊的细胞类型，它是从无囊类被囊动物异卵大侧蛛Oikopleuradioica脑的感觉囊中提取的。这些细胞携带球状的、修饰的纤毛，在其他几个方面类似于许多鱼类中血管囊的冠状细胞。这一发现，加上早期报告的类似细胞的感觉囊的海鞘蝌蚪，使它可能是一个原始形式的冠状细胞是一个经常组成部分的被囊类脑腔。冠状细胞的存在，在被囊动物的进化线是感兴趣的，从遗传学以及功能的角度来看。作者认为被囊感觉囊相当于第三脑室的一部分，被囊冠状细胞参与脑室液成分的调节。
A peculiar cell type is described from the sensory vesicle of the brain of the appendicularian tunicate Oikopleura dioica. The cells carry globular, modified cilia and resemble in several other respects the coronet cells of Saccus vasculosus in many fishes. This finding, together with earlier reports of similar cells in the sensory vesicle of ascidian tadpoles, makes it probable that a primitive form of coronet cells is a regular constituent of the tunicate brain cavity. The existence of coronet cells in the tunicate line of evolution is of interest from a phylogenetical as well as functional point of view. The author proposes that the tunicate sensory vesicle corresponds to part of the craniate third ventricle and that the tunicate coronet cells are involved in the regulation of the ventricle fluid composition.