We studied the effects of water-soluble cationic dinitrosyl iron complexes with thiocarbamide and its aliphatic derivatives, new synthetic analogs of natural NO donors, active centers of nitrosyl [1Fe-2S]proteins, on activities of Ca2+-ATPase of sarcoplasmic reticulum and cGMP phosphodiesterase. Nitrosyl iron complexes [Fe(C3N2H8S)Cl(NO)2]0[Fe(NO)2(C3N2H8S)2]+Cl— (I), [Fe(SC(N(CH3)2)2(NO)2]Cl (II), [Fe(SC(NH2)2)2(NO)2Cl×H2O (III), and [Fe(SC(NH2)2)2(NO)2]2SO4×H2O (IV) in a concentration of 10—4 M completely inhibited the transporting and hydrolytic functions of Ca2+-ATPase. In a concentration of 10—5 M, they inhibited active Ca2+ transport by 57±6, 75±8, 80±8, and 85±9% and ATP hydrolysis by 0, 40±4, 48±5, and 38±4%, respectively. Complex II reversibly and noncompetitively inhibited the hydrolytic function of Ca2+-ATPase (Ki=1.7×10—6 M). All the studied iron—sulphur complexes in a concentration of 10—4 M inhibited cGMP phosphodiesterase function. These data suggest that the studied complexes can exhibit antimetastatic, antiaggregation, vasodilatatory, and antihypertensive activities.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 163, No. 1, pp. 65-68, January, 2017
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Tatyanenko, L.V., Shmatko, N.Y., Sanina, N.A. et al. Effects of Nitrosyl Iron Complexes with Thiocarbamide and Its Aliphatic Derivatives on Activities of Ca2+-ATPase of Sarcoplasmic Reticulum and cGMP Phosphodiesterase. Bull Exp Biol Med 163, 54–56 (2017). https://doi.org/10.1007/s10517-017-3736-8
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DOI: https://doi.org/10.1007/s10517-017-3736-8