Glial cells positive for glial fibrillary acidic protein in the neurohypophysis of the Djungarian hamster (Phodopus sungorus) |
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Authors: | Dr P. Redecker W. Wittkowski K. Hoffmann |
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Affiliation: | (1) Institute of Anatomy, University of Münster, Münster, Federal Republic of Germany;(2) Max-Planck-Gesellschaft, Clinical Research Unit for Reproductive Medicine, Münster, Federal Republic of Germany;(3) Institut für Anatomie, der Universität Münster, Vesaliusweg 2-4, D-4400 Münster, Federal Republic of Germany |
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Abstract: | Summary The presence and distribution of the glial fibrillary acidic protein (GFAP; an astrocytic marker protein associated with glial filaments) in the neurohypophysis of the Djungarian hamster (Phodopus sungorus) were investigated immunohistochemically. Our study revealed characteristic GFAP-staining patterns within the median eminence, infundibular stem and neural lobe. In the whole neurohypophysis, few glial cells showed immunoreactivity. In the neural lobe, immunopositive pituicytes appeared preferentially in the periphery. At the ultrastructural level, we found some pituicytes containing filaments, most notably in their processes. We thus demonstrated that, in contrast to the GFAP-immunoreactivity of cultured pituicytes, pituicytic GFAP-expression in vivo coincides with the presence of electron-microscopically detectable filaments. |
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Keywords: | Glial fibrillary acidic protein (GFAP) Pituicytes Neurohypophysis Immunohistochemistry Glialfilaments Phodopus sungorus |
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