Article
Response of Escherichia coli hypermutators to selection pressure with antimicrobial agents from different classes.
The Journal of antimicrobial chemotherapy - 1 Jun 2002
Miller Keith, O'Neill Alexander John, Chopra Ian
Abstract excerpt
The responses of hypermutable Escherichia coli strains to selection with antibiotics having different endogenous resistance potentials were determined. Selections with rifampicin or ciprofloxacin at 4 x MIC, i.e. conditions where they act as single target agents against RpoB and GyrA, respectively, demonstrated that some hypermutators generated resistant mutants with frequencies up to 1000-fold higher than normal...
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