Mechanisms of Hepatoprotective Effect of Preparation Containing Superlow Doses of Antibodies to Granulocytic Colony-Stimulating Factor

Role of cAMP- and IKK-2-Dependent Signaling Pathways in Functional Stimulation of Mesenchymal Progenitor Cells with Alkaloid Songorine

The role of cAMP- and IKK-2-dependent pathways in stimulation of the growth capacity of mesenchymal progenitor cells with alkaloid songorine was studied in vitro. Inhibitors of adenylate cyclase and IKK-2 were shown to abolish the increase in proliferative activity of progenitor cells. Moreover, blockade of the inhibitory kinase complex was accompanied by a decrease in the intensity of progenitor cell differentiation.

Role of cAMP and IKK-2-dependent signaling in the realization of growth potential of mesenchymal progenitor cells

We studied the role of cAMP- and IKK-2-mediated pathways in the realization of growth potential of mesenchymal progenitor cells in vitro. It had been found that adenylate cyclase inhibitor 2',5'-dideoxyadenosine had no effect on the proliferation and differentiation of fibroblastic CFU. A decrease in differentiation rate of progenitor cells was observed after the treatment with specific IKK-2 blocker inhibitor-kinase complex.

Involvement of cAMP- and IKK-2-dependent signal pathways in the growth capacity of mesenchymal progenitor cells under the influence of basic fibroblast growth factor

We studied the role of cAMP- and IKK-2-dependent pathways under conditions of functional stimulation of mesenchymal progenitor cells by basic fibroblast growth factor. An adenylate cyclase inhibitor 2',5'-dideoxyadenosine had no effect on functional activity of early (primitive) mesenchymal precursors. This agent produced a stimulatory effect on proliferation of stromal precursor cells. Mitotic activity of mesenchymal progenitor cells was shown to decrease after treatment with a specific blocker of the IKK-2 kinase-inhibitor complex.

Effect of pegylated hyaluronate-endo-β-N-acetylhexosaminidase on humoral mechanisms regulating the functions of progenitor cells during chronic hepatitis

We studied the effect of hyaluronate-endo-β-N-acetylhexosaminidase on the secretory function of the liver and bone marrow microenvironment cells in chronic hepatitis. Enhanced production of substances stimulating parenchymal tissue-specific precursors and stem cell homing factors by liver cells was revealed. At the same time, production of SDF-1 and other chemoattractants and adhesion factors of progenitor cells by bone marrow elements was reduced.

Humoral mechanisms regulating the functions of progenitor cells in chronic hepatitis

We studied the secretory function of the liver and bone marrow microenvironment cells under conditions of chronic CCl4-induced hepatitis. Enhanced production of substances stimulating parenchymal tissue-specific precursors and stem cell homing factors by liver cells was observed. In situ binding of stem cells by bone marrow elements increased due to production of various cooperation and adhesion factors against the background of reduced SDF-1 secretion.