Ukr.Biochem.J. 2017; Volume 89, Issue 1, Jan-Feb, pp. 31-37


Effect of 3-substituted 1,4-benzodiazepin-2-ones on bradykinin-induced smooth muscle contraction

P. A. Virych1, O. V. Shelyuk1, T. A. Kabanova2, E. I. Khalimova2,
V. S. Martynyuk1, V. I. Pavlovsky2, S. A. Andronati2

1Educational and Scientific Centre “Institute of Biology and Medicine”,
Taras Shevchenko National University of Kyiv, Ukraine;
2A. V. Bogatsky Physico-Chemical Institute, National Academy
of Sciences of Ukraine, Odessa;

Biochemical properties of 3-substituted 1,4-benzodiazepine determined by the characteristics of their chemical structure. Influence of 3-substituted 1,4-benzodiazepin-2-ones on maximal normalized rate and amplitudes of isometric smooth muscle contraction in rats was investigated. Compounds MX-1775 and MX-1828 demonstrated the similar inhibition effect on bradykinin-induced contraction of smooth muscle like competitive inhibitor des-arg9-bradykinin-acetate to bradykinin B2-receptors. MX-1626 demonstrated unidirectional changes of maximal normalized rate and force of smooth muscle that proportionally depended on bradykinin concentration in the range 10-10-10-6 M. MX-1828 has statistically significant decrease of normalized rate of smooth muscle contraction for bradykinin concentrations 10-10 and 10-9 M by 20.7 and 8.6%, respectively, but for agonist concentration 10-6 M, this parameter increased by 10.7% and amplitude was reduced by 29.5%. Compounds MX-2011, MX-1785 and MX-2004 showed no natural effect on bradykinin-induced smooth muscle contraction. Compounds MX-1775, MX-1828, MX-1626 were selected for further research of their influence on kinin-kallikrein system and pain perception.

Keywords: , , , ,


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