Acta Neuropathologica

, Volume 74, Issue 1, pp 1–8 | Cite as

Glial filaments in the subcutaneous tumors of mouse glioma clones differently expressing glial fibrillary acidic protein

An immunohistochemical and ultrastructural study
  • Y. Shimbo
  • K. Yamazaki
  • F. Ikuta
Regular Papers


Glial filaments contain vimentin and glial fibrillary acidic protein (GFAP). The question of how glial filaments change morphologically according to the expression of vimentin and/or GFAP has remained unclear. In this study, immunohistochemical and ultrastructural examinations were performed on the subcutaneously transplanted tumors of two clones (F6B3 and G10A10) derived from a mouse glioma. F6B3 tumor expressed GFAP and vimentin in large quantities. G10A10 tumor expressed plenty of vimentin but only a little of GFAP. Ultrastructurally, F6B3 tumor contained abundant cytoprocesses in most of which numerous intermediate filaments (IFs) were arranged in a parallel array. On the other hand, only a small number of the processes were seen in G10A10 tumor, which showed a few IFs arranged either randomly or sparsely in the processes. Both tumors commonly had the IFs accompanied by visible sidearms, but there was a difference in that the smooth and firm IFs were confined to part of F6B3 tumor. Thus, the comparison made between the two models presented differences in the content, arrangement and morphology of IFs, as well as in the manner of GFAP expression, suggesting correlation between these differences.

Key words

Intermediate filaments Glial fibrillary acidic protein (GFAP) Vimentin Ultrastructure Glioma 


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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • Y. Shimbo
    • 1
  • K. Yamazaki
    • 1
  • F. Ikuta
    • 1
  1. 1.Department of Pathology, Brain Research InstituteNiigata UniversityNiigata CityJapan

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