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, all of which show tolerance to the conventional antibiotics polymyxin B and ciprofloxacin. Furthermore, while these polyurethanes show poor antimicrobial activity against planktonic bacteria, they prevent surface attachment and stimulate bacterial surface motility to inhibit biofilm formation of both Gram-positive and Gram-negative bacteria at subinhibitory concentrations, without being toxic to mammalian cells. Our results show that these polyurethanes show promise as a platform for the development of therapeutics that target biofilms and modulate surface interactions of bacteria for the treatment of chronic biofilm-associated infections and as antibiofilm agents.
Vishwakarma et al. (Wed,) studied this question.