Abstract
The main target of the thesis was to investigate the drug resistance reversal on prokaryotic and eukaryotic model organisms. Based on DNA and protein complex formation properties of the given compounds the plasmid elimination of bacteria and the modification of the drug transporter proteins various experimental systems have been studied in bacteria and tumor cells.It was found that E. coli cells isolated from clinical specimen were less sensitive for the plasmid elimination than the laboratory strain carrying F prime plasmid, however, there was a complex formation between the antiplasmid compounds and the plasmid DNA isolated from both the clinical and laboratory strains. In addition there was a difference between the curing effect of two phenothiazines – the PMZ and TFP – on some E. coli strains in this study. The mechanism of action of different antiplasmid compounds was investigated on model nucleic acids such as calf thymus DNA and plasmid DNA. The pyrido[3,2-g] quinoline and phenothiazine derivatives...
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