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Immunohistochemical localization of urokinase-type plasminogen activator in Sertoli cells and tissue-type plasminogen activator in spermatogenic cells in the rat seminiferous epithelium.

Immunohistochemical localization of urokinase-type plasminogen activator in Sertoli cells and tissue-type plasminogen activator in spermatogenic cells in the rat seminiferous epithelium.

Authors :
Vihko KK
Kristensen P
Danø K
Parvinen M
Source :
Developmental biology [Dev Biol] 1988 Mar; Vol. 126 (1), pp. 150-5.
Publication Year :
1988

Abstract

The occurrence of plasminogen activators of the urokinase-type (u-PA) and tissue-type (t-PA) at various stages of the epithelial cycle was studied immunohistochemically in rat seminiferous tubule segments. u-PA immunoreactivity was detected exclusively at stages VII and VIII in Sertoli cells, displaying a distinct granular cytoplasmic staining. t-PA immunoreactivity was found during mid- and late pachytene and diakinesis (stages VII-XIII) in spermatogenic cells, displaying a granular cytoplasmic staining with maximal intensity in stages IX-XIII. The specificity of the stainings was supported by staining controls, including absorption of the antibodies with purified preparations of the activators. It was also supported by zymographic studies of the occurrence of u-PA and t-PA in extracts of tubular segments at different stages of the cycle, isolated by transillumination-assisted microdissection. The possible functions of the two types of plasminogen activators in the seminiferous epithelium are discussed.

Details

Language :
English
ISSN :
0012-1606
Volume :
126
Issue :
1
Database :
MEDLINE
Journal :
Developmental biology
Publication Type :
Academic Journal
Accession number :
3125078
Full Text :
https://doi.org/10.1016/0012-1606(88)90248-5