Factors of osteogenesis and the secretory function of transitional epithelium

Summary The author conducted an experimental, histogenetic and histochemical analysis of the transitional epithelium bone-forming activity in the transplantates and in conditions of ligature of the renal blood vessels. It was demonstrated that in such conditions substances of polysaccharide origin are secreted by the epithelium into the underlying tissue, as well as over the surface of the epithelium layer. It is suggested to name this secretion pelvin. The introduction of pelvin in the connective tissue causes the appearance of myeloid hemopoiesis in it. A hypothesis is put forward of the presence of the incretory function in the transitional epithelium. The explanation of its bone-forming activity in experimental conditions is suggested.Presented by Active Member of the AMN SSSR G. V. Vygodchikov