De Spiegelaere W, Casteleyn C, Van den Broeck W, Simoens P
Ghent University, Faculty of Veterinary Medicine, Department of Morphology, Salisburylaan 133, 9820 Merelbeke, Belgium.
Anat Histol Embryol. 2008 Dec;37(6):458-63. doi: 10.1111/j.1439-0264.2008.00882.x. Epub 2008 Sep 10.
The choroid plexus (CP) is a highly vascularized organ in the brain ventricles which acts as the main producer of cerebrospinal fluid (CSF). A study of the surface ultrastructure of the porcine CP was performed using scanning and transmission electron microscopy. The vascular walls of the capillaries were fenestrated. Epiplexus cells of different morphology were abundant on top of the epithelial surface. Two types of epithelial cells were present, characterized by the presence or absence of microvilli. Some epithelial cells contained cilia while other cells had large secretory protrusions called blebs. In the choroid epithelium of the lateral ventricles, some cells with large depressions were present. Cells with peduncles, such as recently discovered in the buffalo, could not be recognized. The variability of the choroidal surface structures clearly indicates the active role of the CP in the formation and maintenance of the CSF and its components.
脉络丛（CP）是脑室中高度血管化的器官，是脑脊液（CSF）的主要产生部位。利用扫描电子显微镜和透射电子显微镜对猪脉络丛的表面超微结构进行了研究。毛细血管的血管壁有窗孔。上皮表面顶部有大量形态各异的室管膜上细胞。存在两种类型的上皮细胞，其特征是有无微绒毛。一些上皮细胞含有纤毛，而其他细胞有称为泡的大分泌突起。在侧脑室的脉络丛上皮中，存在一些有大凹陷的细胞。未发现有蒂的细胞，如最近在水牛中发现的那样。脉络丛表面结构的变异性清楚地表明了脉络丛在脑脊液及其成分的形成和维持中的积极作用。
