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- W4224282634 abstract "ABSTRACT Self-transmissible multidrug resistance (MDR) plasmids are a major health concern because they can spread antibiotic resistance to pathogens. Even though most pathogens form biofilms, little is known about how MDR plasmids persist and evolve in biofilms. We hypothesize that (i) biofilms act as refugia of MDR plasmids by retaining them in the absence of antibiotics longer than well-mixed planktonic populations, and that (ii) the evolutionary trajectories that account for the improvement of plasmid persistence over time differ between biofilms and planktonic populations. In this study, we evolved Acinetobacter baumannii with an MDR plasmid in biofilm and planktonic populations with and without antibiotic selection. In the absence of selection biofilm populations were better able to maintain the MDR plasmid than planktonic populations. In planktonic populations plasmid persistence improved rapidly but was accompanied by a loss of genes required for the horizonal transfer of plasmids. In contrast, in biofilms most plasmids retained their transfer genes, but on average plasmid persistence improved less over time. Our results showed that biofilms can act as refugia of MDR plasmids and favor the horizontal mode of plasmid transfer, which has important implications for the spread of MDR." @default.
- W4224282634 created "2022-04-26" @default.
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- W4224282634 date "2022-04-19" @default.
- W4224282634 modified "2023-09-27" @default.
- W4224282634 title "Biofilms preserve the transmissibility of a multi-drug resistance plasmid" @default.
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- W4224282634 doi "https://doi.org/10.1101/2022.04.18.488688" @default.
- W4224282634 hasPublicationYear "2022" @default.
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