Masiuk D. Structural and Functional Characteristics of Plasmolemma Proteins of the Cattle Jejunum Enterocytes in the Fetal Period of Ontogenesis

The dissertation is devoted to the elucidation of physiological and biochemical mechanisms of structural and functional transformations of plasmolemma proteins of the cattle jejunum enterocytes in the fetal period of ontogenesis. New scientific data on the characteristics of the structural components of the mucous membrane of the cattle fetus jejunum, dynamics of cytometric parameters of epithelial cells with a striped border of the cattle fetus jejunum, concentration of structural proteins of intestinal epithelial cells plasmolemma and age-related changes in the activity of hydrolytic and transport enzymes on the apical and basolateral membranes of intestinal cells of cattle fetus. Fc-γ-receptor proteins of apical and basolateral membranes of the jejunum enterocytes were detected in cattle fetuses with Mr 120 kDa, 87, 72 and 43 kDa. It is hypothesized that in the fetal period of cattle this type of FcγR plays an important role (is a trigger) in the transport of IgG from amniotic fluid to the fetal circulation.