兔坐骨神经神经束膜的冷冻蚀刻面。

Freeze-fracture faces of the perineurial sheath of the rabbit sciatic nerve.

作者信息

Reale E, Luciano L, Spitznas M

出版信息

J Neurocytol. 1975 Jun;4(3):261-70. doi: 10.1007/BF01102112.

Abstract

Replicas of the perineurium of rabbit sciatic nerve fascicles show extensive zonulae occludentes between the flattened cells of each perineuriallamella. The junctions formed by the zonulae occludentes are of the morphologically 'tight' type. Therefore, theyare likely to represent the anatomical site of the diffusion barrier previously demonstrated by other morphological and physiological methods. Neighbouring perineurial lamellae are connected to one another by numerous maculae occludentes, some of which lie on thelateral processes of the perineurial cells. Within the meshes of the maculae occludentes and close tothem, small gap junctions can be observed.

摘要

兔坐骨神经束膜的复制品显示，每个束膜层的扁平细胞之间存在广泛的紧密连接。紧密连接形成的连接在形态上属于“紧密”型。因此，它们可能代表了先前通过其他形态学和生理学方法证明的扩散屏障的解剖学部位。相邻的束膜层通过大量的闭锁斑相互连接，其中一些闭锁斑位于束膜细胞的侧突上。在闭锁斑的网孔内及其附近，可以观察到小的缝隙连接。