Abstract
An ATP-induced increase of [Ca2+]m in myometrium mitochondria matrix at the absence of exogenous Ca2+ was shown. An ATP-induced increase of Сa2+ efflux from mitochondria ([Сa2+]o) has also been shown. Mitochondria membranes were polarized upon incubation in both Mg2+- and Mg2+,ATP-medium. Cardiolipin (CL) content in mitochondria membranes decreased upon incubation of organelles in Mg2+,ATP-medium as compared to Mg2+-medium. It was suggested that ATP could play the role of a signaling molecule regulating the Ca2+ exchange in the mitochondria.
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