Publication: Previously unreported "hemidesmosomal junctions", between folliculo-stellate cells and pituitary adenoma cells
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Date
1988
Authors
Osamu Tachibana ; Tetsumori Yamashima
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
Thirty-eight non-functioning pituitary
adenomas were ultrastructurally investigated with
particular attention to the Folliculo-Stellate (FS) cells. A
large number of FS cells were found in four cases, one of
which disclosed a new type of intercellular junction
between FS cells and surrounding adenoma cells. These
junctions were characterized by 1) the presence of
plasmalemmal attachment plaques only in FS cells, 2) the
cytoplasmic filaments assembling in parallel to the
attachment plaques, 3) the parallel plasma membranes
being separated by the intercellular amorphous material
and 4) the intercellular space of approximately 25nm
width. They were similar to hemidesmosomes, but were
quite different from hemidesmosome-like intercellular
specializations which have been described in the normal
meninges and human meningiomas. Accordingly, we
designated these new junctions as nhemidesmosomal
int~ctionsu which appeared to be one of the
ultrastructural features characterizing FS cells.
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