Electron microscopic study of the secretion process in bovine reproductive organs

Journal of Andrology
Y Agrawal, T Vanha-Perttula

Abstract

The origin and mechanism of the secretion of membrane-bound particles in bovine seminal plasma were studied with transmission (TEM) and scanning (SEM) electron microscopy of the epididymis, vas deferens, ampulla, and seminal vesicle of adult bulls. In the SEM study, all these organs were found to contain apical protrusions in the lining of the epithelial cells. Eventually the protrusions became detached and formed secretory bodies within the lumina of these organs. In the epididymis, the TEM study disclosed a granular and rather homogeneous content in the protrusions and bodies, whereas in the vas deferens they contained dilated cisternae of smooth endoplasmic reticulum. In the ampulla and seminal vesicle, the formation of the apical protrusions was associated with an accumulation of membrane-bound vesicles. These vesicles were found to be released from the storage bodies into the secretory fluid of the lumen. Both could be harvested from isolated seminal vesicle secretions by Percoll gradient centrifugation. It was concluded that various parts of the bovine reproductive organs discharge their secretory products at least partly by an apocrine mechanism. The membrane-bound particles in the seminal plasma, however, appear to be m...Continue Reading

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Citations

Aug 1, 1989·International Journal of Andrology·Y P Agrawal, T Vanha-Perttula
Oct 29, 2010·Veterinary Medicine International·Julieta CaballeroRobert Sullivan
Jun 5, 2012·Cell and Tissue Banking·Mariana RovegnoMayra Elena Ortiz D'Avila Assumpção
Mar 14, 2003·Journal of Andrology·Fabrice SaezRobert Sullivan
Mar 8, 2006·Reproduction in Domestic Animals = Zuchthygiene·R El-Hajj GhaouiW M C Maxwell
Oct 17, 2003·Biology of Reproduction·Sandrine CastellaJean-Louis Dacheux
Jun 9, 2004·Reproduction in Domestic Animals = Zuchthygiene·R El-Hajj GhaouiW M C Maxwell
Mar 3, 2006·Biology of Reproduction·Hanae RejrajiJoël R Drevet
Sep 19, 2002·Molecular Reproduction and Development·Louis Hermo, Duncan Jacks
May 17, 2005·Blood Cells, Molecules & Diseases·Robert SullivanGilles Frenette

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