Oxidative Stress and Antimicrobial Activity of Chromium(III) and Ruthenium(II) Complexes on Staphylococcus aureus and Escherichia coli

PAEZ P. L.; BAZAN C.M; BONGIOVANNI ME; TONEATTO J; ALBESA I; BECERRA MC; ARGÜELLO G A

Biomed Res Int

Hindawi Publishing Corporation

Lugar: New York; Año: 2013 vol. 2013 p. 1 - 1

2314-6133

he prevalence of antibiotic resistance has resulted in the need for new approaches to be developed to combat previously easily treatable infections. The main aim of this work was to establish the potential of the synthetic alfa-diimine chromium(III) and Ruthenium(II) complexes (where the alfa-diimine ligands are bpy = 2,2-bipyridine; phen = 1,10-phenanthroline and dppz = dipyrido[3,2-a:2´,3´-c]-phenazine) like [Cr(phen)3]3+, [Cr(phen)2(dppz)]3+, [Ru(phen)3]2+ and [Ru(bpy)3]2+ as antibacterial agents by generating oxidative stress. The [Cr(phen)3]3+ and [Cr(phen)2(dppz)]3+ complexes showed activity against Gram positive and Gram negative bacteria with minimum inhibitory concentrations (MICs) ranging from 0.125 µg/mL to 1 µg/mL, while [Ru(phen)3]2+ and [Ru(bpy)3]2+ does not exhibit antimicrobial activity against the two bacterial genera studied at the concentration range used. When ciprofloxacin was combined with [Cr(phen)3]3+ for the inhibition of Staphylococcus aureus and Escherichia