Regional ultra structural features of principal cells from the epididymal epithelium lining of Agouti paca

  • Antonio Marcos Orsi Universidade Estadual Paulista, Departamento de Anatomia, Botucatu, SP
  • Karina Simões Centro Universitário de Rio Preto, Setor de Anatomia, São José do Rio Preto, SP
  • Márcia Rita Fernandes Machado Universidade Estadual Paulista, Departamento de Morfologia e Fisiologia Animal, Jaboticabal, SP
  • Raquel Fantin Domeniconi Faculdade de Medicina de Marília, Departamento de Anatomia, Marília, SP
Keywords: Epididymidis epithelium, Principal cells, Fine structure, Agouti paca

Abstract

The principal (P) cells of epididymidis surface epithelium of Agouti paca were related to processes of adsorptive endocytosis and phase-fluid endocytosis, as well as protein secretion apparently also occur. These findings had been proposed on the base the cytoplasmic ultrastructural features of P cells in which were seen an expressive number of vesicles with several shapes, sizes and internalized content occurring also smaller pits and pale small vesicles located next to the apical brush border of microvilli. Moreover, occurred coated vesicles, smooth surface vesicles and great vesicles; multivesicular bodies, endosomes and lysosomes mainly viewed on supranuclear and apical positions. Presence of an appocrine secretory pathway was characterized in P cells through the occurrence of apical cytoplasmic expansions, protruding into the ducts epididymidis luminal compartment.

Downloads

Download data is not yet available.
Published
2009-12-01
How to Cite
Orsi, A., Simões, K., Machado, M., & Domeniconi, R. (2009). Regional ultra structural features of principal cells from the epididymal epithelium lining of Agouti paca. Brazilian Journal of Veterinary Research and Animal Science, 46(6), 455-464. https://doi.org/10.11606/S1413-95962009000600004
Section
UNDEFINIED