4.3 Article

Environmental pollutants induce noninherited antibiotic resistance to polymyxin B in Escherichia coli

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FUTURE MICROBIOLOGY
卷 15, 期 17, 页码 -

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FUTURE MEDICINE LTD
DOI: 10.2217/fmb-2020-0172

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antibiotic resistance; bacteria; E; coli; environmental pollutants; noninherited resistance; polymyxin B

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Aim: The mechanisms behind antibiotic resistance by bacteria are important to create alternative molecules. Objective: This study focuses on the impact of environmental pollutants on bacterial resistance to antibiotics. Materials & methods: The effect of various environmental pollutants on noninherited bacterial resistance to antibiotics was examined. Results: The tolerance to the polymyxin-B antibiotic was shown to be conferred to Escherichia coli, by pretreatment with subinhibitory concentrations of environmental toxicants. The cell survival to a sublethal dosage of antibiotics was tested. Exposure to low concentrations of toxic compounds (500 ppb copper, 2% [v/v] ethanol or 0.5 mu g/ml trimethoprim) stimulated the bacterial heat shock systems and led to increased tolerance to polymyxin B. Conclusion: Environmental pollutants induce a temporary bacterial noninheritable resistance to antibiotic.

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