MYOEPITHELIAL CELLS AFTER DUCT LIGATlON AND DE-LIGATION OF RAT SUBMANDIBULAR GLAND, LIGHT AND ELECTRON MICROSCOPIC STUDY

Authors

Ibrahim Shaaban, Anatomy department. Faculty of Medicine, Mansoura University

Article Type

Original Study

Abstract

Myoepithelial cells are observed in several exocrine glands. They are star-shaped cells that lie in between the basal lamina and the acinar and ductal cells (Ogawa et al., 1999)30. These cells have the structural fea­tures and function of both smooth muscle cells and epithelium (Franke et al., 1980)31. They contract when the gland is stimulated to secrete. They aid expulsion of glandular se­cretion through compressing or rein­forcing the underlying parenchyma! cells, it was suggested that the major function of myoepithelial cells in sali­vary glands is to support the glandu­lar structure through isometric con­traction (Segawa et a!., 1995)36. They also display the characteristics of epithelium in that they are situated within the glandular epithelium be­tween secretory cells and the base­ment membrane (Tandler, 1965; Harrop, 1968; Leeson and Leeson, 1971)45,19,26 Myoepithelial cells have speculat­ed to play an important role in histo-genesis of some salivary gland tu­mors, such as pleomorphic adenoma, myoepithelioma, adenoid cystic carci­noma and certain other tumors (Bat-sakis et al., 1983; Dardick and Bu- ford-Mason, 1993; Redman, 1994) 2,9,33. Studies of the responses of SMG to ligation of the main excretory duct have established that both acinar cells and cells of the granular ducts are markedly altered morphologically

Recommended Citation

Shaaban, Ibrahim (2006) "MYOEPITHELIAL CELLS AFTER DUCT LIGATlON AND DE-LIGATION OF RAT SUBMANDIBULAR GLAND, LIGHT AND ELECTRON MICROSCOPIC STUDY," Mansoura Medical Journal: Vol. 35 : Iss. 1 , Article 4.
Available at: https://doi.org/10.21608/mjmu.2006.128718

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