Bacterial infections with complicated process and therefore lengthy, often unsolvable treatment due to emerging resistance to antibiotic drugs are currently increasingly frequent problem of many medical fields. The presented thesis entitled "Effect of heavy metal ions on the biological properties, resistance and virulence" was primarily focused on the study of selected metal ions (Ag +, Cd2+, Cu2+, Pb2+ and Zn2+) on the biochemical properties of bacterial strains, in particular observing their influence on free radical formation, creation of oxidative stress and growth properties. Detection of the influence of metals not only on biochemical parameters, but mainly their significant antimicrobial effect directed our further studies to testing of antimicrobial activity of metals (usually silver) or metal nanoparticles synthesized in complexes with polymer substances (chitosan, hyaluronic acid). The obtained results clearly showed the nanoparticles as the best form, so the effects of proven antimicrobial silver nanoparticles were subsequently compared with metalloid selenium nanoparticles, which even surpassed the previous results of antimicrobial activity. Finally, the effect of long-term action of metal ions on the emerging resistance or so-called multiresistance in the case of cross-resistance of metals and antibiotic drugs was tested.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:249355 |
| Date | January 2015 |
| Creators | Hegerová, Dagmar |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/doctoralThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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