Copper complexes with bioactive ligands |
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| Authors: | B Dudová D Hudecová R Pokorný M Mikulá?ová M Palicová P Segla M Melník |
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| Institution: | (1) Department of Biochemistry and Microbiology, Faculty of Chemical Technology, Slovak University of Technology, 812 37 Bratislava, Slovakia;(2) Department of Inorganic Chemistry, Faculty of Chemical Technology, Slovak University of Technology, 812 37 Bratislava, Slovakia |
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| Abstract: | Biological properties of new copper(II) complexes of 2-methylthionicotinate (2-MeSNic) of composition Cu(2-MeSNic)2(MeNia)2·4H2O (where MeNia isN-methylnicotinamide), Cu(2-MeSNic)2(Nia)2·2H2O (where Nia is nicotinamide) and Cu(2-MeSNic)2(2 (where L is isonicotinamide (iNia) or ethyl nicotinate (EtNic)) are reported. Gram−-bacteria (Escherichia coli) are more resistant against Cu(II) complexes than Gram+-bacteria (Staphylococcus aureus)—significant antistaphylococcal activity was found with Cu(2-MeSNic)2(MeNia)2·4H2O (IC50 1.3 mmol/L).Caddida parapsilosis was most inhibited by Cu(2-MeSNic)2·H2O and Cu(2-MeSNic)2(MeNia)2·4H2O (IC50 1.4 mmol/L and 1.5 mmol/L, respectively). Biosynthesis of nucleic acids influenced by Cu(2-MeSNic)2-(Nia)2·2H2O indicated by incorporation of14C-adenine (IC50(Ade) 0.31 mmol/L) is more sensitive than biosynthesis of proteins indicated by incorporation of14C-leucine (IC50(Leu) 9.94 mmol/L). Cu(II) complexes with expressed antimicrobial activity showed no mutagenic activity. |
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