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Bacteria repelling poly(methylmethacrylate-co-dimethylacrylamide) coatings for biomedical devices†
Seshasailam Venkateswaran,Mei Wu,Peter J. Gwynne,Ailsa Hardman,Annamaria Lilienkampf,Salvatore Pernagallo,Garry Blakely,David G. Swann,Maurice P. Gallagher,Mark Bradley
Journal of Materials Chemistry B Pub Date : 09/02/2014 00:00:00 , DOI:10.1039/C4TB01129E
Abstract

Nosocomial infections due to bacteria have serious implications on the health and recovery of patients in a variety of medical scenarios. Since bacterial contamination on medical devices contributes to the majority of nosocomical infections, there is a need for redesigning the surfaces of medical devices, such as catheters and tracheal tubes, to resist the binding of bacteria. In this work, polyurethanes and polyacrylates/acrylamides, which resist binding by the major bacterial pathogens underpinning implant-associated infections, were identified using high-throughput polymer microarrays. Subsequently, two ‘hit’ polymers, PA13 (poly(methylmethacrylate-co-dimethylacrylamide)) and PA515 (poly(methoxyethylmethacrylate-co-diethylaminoethylacrylate-co-methylmethacrylate)), were used to coat catheters and substantially shown to decrease binding of a variety of bacteria (including isolates from infected endotracheal tubes and heart valves from intensive care unit patients). Catheters coated with polymer PA13 showed up to 96% reduction in bacteria binding in comparison to uncoated catheters.

Graphical abstract: Bacteria repelling poly(methylmethacrylate-co-dimethylacrylamide) coatings for biomedical devices
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