[Investigation of nitrosactive compounds influence on polarization of the mitochondrial inner membrane in the rat uterus myocytes using potential sensitive fluorescent probe DiOC6(3)]

Abstract

The effect of nitrosactive compounds (sodium nitroprusside and sodium nitrite) on the polarization level of the uterus myocytes inner mitochondrial membrane using the confocal laser microscopy and fluorescent probe potentialsensitive DiOC6(3) (3,3'-dihexyloxacarbocyanine) was ivestigated. Colocalisation of mitochondrial membranes specific fluorescent probes (MitoTracker Orange CM-H2TMRos, 10 - nonyl acridine orange and DiOC6(3)) was demonstrated. It was shown that sodium nitroprusside at 0.1 mM concentration caused a moderate decrease in mitochondrial transmembrane potential. That observation was confirmed by flow cytometry. Action efficiency of sodium nitrite in a similar concentration was significantly lower than that of sodium nitroprusside. It is shown that it was sodium nitroprusside which caused a slight swelling of the mitochondria. A possible protecting role of nitric oxide as to mitochondria was discussed.