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The aim of the present study was to investigate biological properties of the novel nitrobenzoxadiazole derivative 7-(1-methyl-3-pyrrolyl-)-4,6-dinitrobenzofuroxan. Materials and Methods:We used a bioluminescent test based on a set of lux-biosensors, which are genetically modified E.coli strains able to react on different types of factors that can induce an SOS-response with light emission. The spontaneous and induced mutation frequencies of antibiotic resistance in E. coli were determined by methods of classical genetics of microorganisms.Results: 7-(1-methyl-3-pyrrolyl-)-4,6-dinitrobenzofuroxan demonstrated inhibition of SOS-response in a biosensor model system and significantly reduced the frequency of spontaneous mutations and mutations induced by ciprofloxacin of antibiotic resistance.Conclusion: Based on our data, we can recommend using compound 1 as a starting point for the development of drugs that block mutagenesis associated with the emergence of antibiotic-resistant bacteria. (Int J Biomed. 2016;6(3):228-232.).

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