The mechanism of secretory-vesicle formation from the trans-Golgi network (TGN) of endocrine cells is poorly understood. To identify cytosolic activities that facilitate the formation and fission of nascent secretory vesicles, we treated permeabilized pituitary GH3 cells with high salt to remove endogenous budding factors. Using this cell preparation, secretory-vesicle budding from the TGN requ...

We describe a novel ventral scape gland in all 19 species of the genus Strumigenys that we examined, confirming postulated existence this by Bolton (1999). The occurs workers and queens; it belongs to ‘class-1’ is formed layer epithelial secretory cells line ventrodistal tegumental cuticle antennal scape. characterized its bowl-shape, ultrastructural characteristics microvillar arrangement pres...

AbstractMeningiomas are slow growing, extra axial brain tumors that originating from the meningothelial cells of arachnoid. Meningiomas most common tumors, however secretory meningiomas extremely rare variant and can be confused radiologically pathologically with malignant tumors. A 48 years old male was presented a complaint headache visual impairment in left eye. Magnetic resonance imaging re...

Chromogranin A (CgA) is transported restrictedly to secretory granules in neuroendocrine cells. In addition to pHand Ca2 -dependent aggregation, CgA is known to bind to a number of vesicle matrix proteins. Because the binding-prone property of CgA with secretory proteins may be essential for its targeting to secretory granules, we screened its binding partner proteins using a yeast two-hybrid s...

Two types of secretory pathways are present in mammalian cells: constitutive secretion and regulated secretion (1). In the constitutive secretory pathway, which is found in all types of cells, secretory products are packed in small vesicles. Most of the proteoglycans and glycoproteins of the extracellular matrix are secreted in this way. The regulated secretory pathway, found in the more differ...

Since secretory component is thought to be a normal glandular epithelial cell product, surgical specimens from patients with mammary carcinoma, an epithelial cancer, were studied with antisera to human free secretory compo nent by indirect immunofluorescence microscopy. Normal breast tissue (10 cases) showed fluorescent epithelial cells confined to normal ducts. This was in marked contrast to i...

Chromogranin A (CgA) is transported restrictedly to secretory granules in neuroendocrine cells. In addition to pH-and Ca 2 +-dependent aggregation, CgA is known to bind to a number of vesicle matrix proteins. Because the binding-prone property of CgA with secretory proteins may be essential for its targeting to secretory granules, we screened its binding partner proteins using a yeast two-hybri...

A study on leaf anatomical characteristics was undertaken three medicinal plants species, Eclipta prostrata (L.) L., Vernonia amygdalina Delile and Clitoria ternatea L. It is found that there are variables in epidermal features such as anticlinal wall patterns, stomata types, trichome the occurrence of secretory structures. Results showed slight variation which is, sinuous abaxial surfaces stra...

Background: The human endometrium undergoes cyclical changes including proliferation, differentiation, tissue breakdown and shedding (menstruation) throughout a woman’s reproductive life. The postovulatory rise in ovarian progestrone induces profound remodeling in chromatin structure of cells, and consequently differentiation of estradiol-primed endometrium. This change is crucial for embryo im...