Tulsi R S
J Comp Neurol. 1982 Oct 10;211(1):11-20. doi: 10.1002/cne.902110103.
The ending of Reissner's fiber (RF) and structural features associated with gaps or fissures in the rostral part of the filum were investigated using light, scanning, and transmission microscopic techniques in young and mature possums of both sexes. To the best of the author's knowledge the report contains results of the first successful application of the SEM for a study of RF in the spinal cord. Some new observations suggest that while the bulk of RF is formed by the subcommissural organ and moved caudally, additional secretory products may be added by ependymal cells in the sacral and possibly other regions of the spinal cord. Evidence is provided in support of the view that RF may pass through gaps in the ependymal lining in the rostral part of the dorsal wall of the filum terminale and caudal end of the sacral cord to reach the periependymal loose tissue and possibly the subarachnoid space. The region of the gap shows the surface of the ependyma facing the lumen of the filum to be covered with microvilli and cilia, and to be in direct continuity with the external surface of the ependyma covered with basement membrane with glial processes and collagen fibers in close proximity. The present results confirm and extend observations reported by Wislocki et al. ('56).
利用光学显微镜、扫描电子显微镜和透射电子显微镜技术，对幼年和成年雌雄负鼠丝状终丝头端与间隙或裂隙相关的雷斯纳纤维（RF）的末端及结构特征进行了研究。据作者所知，本报告包含了首次成功应用扫描电子显微镜研究脊髓中RF的结果。一些新的观察结果表明，虽然RF的大部分由联合下器官形成并向尾端移动，但骶段及可能脊髓其他区域的室管膜细胞可能会添加额外的分泌产物。有证据支持以下观点：RF可能穿过终丝背壁头端和骶髓尾端室管膜衬里的间隙，到达室管膜周围疏松组织，甚至可能到达蛛网膜下腔。间隙区域显示，面向终丝管腔的室管膜表面覆盖有微绒毛和纤毛，并与覆盖有基底膜、紧邻神经胶质突和胶原纤维的室管膜外表面直接连续。本研究结果证实并扩展了维斯洛基等人（1956年）报道的观察结果。
