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Review
. 2006 Apr;14(4):176-82.
doi: 10.1016/j.tim.2006.02.006. Epub 2006 Mar 14.

Co-selection of antibiotic and metal resistance

Craig Baker-Austin  1 , Meredith S Wright, Ramunas Stepanauskas, J V McArthur
Affiliations
Review

Co-selection of antibiotic and metal resistance

Craig Baker-Austin et al. Trends Microbiol. 2006 Apr.

Abstract

There is growing concern that metal contamination functions as a selective agent in the proliferation of antibiotic resistance. Documented associations between the types and levels of metal contamination and specific patterns of antibiotic resistance suggest that several mechanisms underlie this co-selection process. These co-selection mechanisms include co-resistance (different resistance determinants present on the same genetic element) and cross-resistance (the same genetic determinant responsible for resistance to antibiotics and metals). Indirect but shared regulatory responses to metal and antibiotic exposure such as biofilm induction also represent potential co-selection mechanisms used by prokaryotes. Metal contamination, therefore, represents a long-standing, widespread and recalcitrant selection pressure with both environmental and clinical importance that potentially contributes to the maintenance and spread of antibiotic resistance factors.

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