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Default Enhancement of antibiotic-activity through complexation with metal ions - Combined ITC, NMR, enzymatic and biological studies.

Enhancement of antibiotic-activity through complexation with metal ions - Combined ITC, NMR, enzymatic and biological studies.

Related Articles Enhancement of antibiotic-activity through complexation with metal ions - Combined ITC, NMR, enzymatic and biological studies.

J Inorg Biochem. 2017 Feb;167:134-141

Authors: Möhler JS, Kolmar T, Synnatschke K, Hergert M, Wilson LA, Ramu S, Elliott AG, Blaskovich MA, Sidjabat HE, Paterson DL, Schenk G, Cooper MA, Ziora ZM

Abstract
Alternative solutions need to be developed to overcome the growing problem of multi-drug resistant bacteria. This study explored the possibility of creating complexes of antibiotics with metal ions, thereby increasing their activity. Analytical techniques such as isothermal titration calorimetry and nuclear magnetic resonance were used to examine the structure and interactions between Cu(II), Ag(I) or Zn(II) and ?-lactam antibiotics. The metal-?-lactam complexes were also tested for antimicrobial activity, by micro-broth dilution and disk diffusion methods, showing a synergistic increase in the activity of the drugs, and enzymatic inhibition assays confirming inhibition of ?-lactamases responsible for resistance. The metal-antibiotic complex concept was proven to be successful with the activity of the drugs enhanced against ?-lactamase-producing bacteria. The highest synergistic effects were observed for complexes formed with Ag(I).


PMID: 27984786 [PubMed - indexed for MEDLINE]



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