Methods of Detection of Mesenchymal Stem Cells in the Kidneys during Therapy of Experimental Renal Pathologies

We studied the possibility of using different methods for identifi cation of mesenchymal multipotent stromal cells in the renal parenchyma under conditions of experimental thermal ischemia of the kidneys and acute pyelonephritis. In vivo and in vitro methods of identifi cation of mesenchymal multipotent stromal cells by magnetic resonance imaging and immunological and immunohistochemical methods were compared. Labeling of stem cells with iron-containing particles followed by their histological identifi cation and immunohistochemical staining with species-specifi c antibodies were the most informative methods. Active migration of the cells to the renal tissue was detected by these methods in experimental acute pyelonephritis with infl ammation foci.