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STEREOTAXIC VASCULAR MORPHOLOGY IN EXPERIMENTAL GLIOMAS AND ITS RELATIONSHIP WITH NORMAL VASCULARIZATION IN THE DEVELOPMENTAL STAGE Yasuji Yoshida 1 1Department of Nauropathology, Brain Research Institute, Niigata University pp.619-627
Published Date 1983/6/1
DOI https://doi.org/10.11477/mf.1406205142

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  • Abstract
  • Look Inside

Three-dimensional vascular architecture of the experimental gliomas produced in adult nude mice by intracerebral inoculation of rat glioma C-6 cells (Benda et al., 1968) was studied through a scanning electron-microscope using the vascularcasting method (Yoshida & Ikuta, 1981), and compared with that of developing rat cerebellums.

It was observed that smoothly running blood vessels of identical diameter in the surrounding non-neoplastic nervous tissue were connected with extremely dilated and tortuous ones at the border of the neoplasm. In addition to the increased number of these branches, the vascular architecture in the glioma demonstrated characteristic nodular protrusions, or small ring-like anastomoses. Within the lumina, septum-like formations were formed.

On the other hand, it was found that surpri-singly similar vascular features were observed in the subarachnoid space of the developing external granular cell layer from birth until approximately 2 day after birth in the rat cerebellum. Then, after 4 days from birth, these features disappeared and resulted in numerous small vascular prolifera-tions.

The present study strongly suggests that the newly formed vessels in the gliomas are definitely "abnormal" compared with the vessels of normal adult animals, but that the process of vasculariza-tion in the glioma is based on the way of vascu-larization noticed in normal developing fetal and newborn brains.


Copyright © 1983, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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