Abstract:
:Two-month-old female Swiss mice that had come into estrus were injected intravenously with L-3H-fucose and killed at 5, 15, 40 min, and 4 h after injection. Pieces of the isthmus and of the ampulla of the uterine tubes were processed for light- and electron-microscopic radioautography. Incorporation of 3H-fucose was more intense in the isthmian secretory cells than in the ciliated cells of the ampulla. Electron-microscopic radioautography of the isthmian secretory cells demonstrated that 3H-fucose was incorporated into newly synthesized glycoproteins in the Golgi apparatus from where labelled glycoproteins migrated mainly to secretory granules and apical microvilli. The histochemical technique using ruthenium red confirmed the presence of glycoproteins in the contents of the secretory granules released to the lumen of the uterine tubes as demonstrated by radioautography. Other glycoproteins are transported inside small vesicles and most likely are related to the renewal of the plasma membrane. The role of the secretory glycoproteins in various events of mammalian reproduction is discussed.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Teixeira ML,Haddad Adoi
10.1007/BF00220036subject
Has Abstractpub_date
1988-10-01 00:00:00pages
209-16issue
1eissn
0302-766Xissn
1432-0878journal_volume
254pub_type
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