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The formation of microbial biofilms is an important reason for failure of antimicrobial therapy. However, the molecular mechanisms underlying the survival of biofilm cells are still not completely understood. In this review we discuss three mechanisms that play an important role in biofilm survival: (i) biofilm-specific protection against oxidative stress; (ii) biofilm-specific expression of efflux...
Environmental influences on antibiotic activity and resistance can wreak havoc with in vivo antibiotic efficacy and, ultimately, antimicrobial chemotherapy. In nature, bacteria encounter a variety of metal ions, particularly copper (Cu) and zinc (Zn), as contaminants in soil and water, as feed additives in agriculture, as clinically-used antimicrobials, and as components of human antibacterial responses...
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