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Antibacterial Polysiloxane Polymers and Coatings for Cochlear Implants
Authors:Vlad Cozma  Irina Rosca  Luminita Radulescu  Cristian Martu  Valentin Nastasa  Cristian-Dragos Varganici  Elena-Laura Ursu  Florica Doroftei  Mariana Pinteala  Carmen Racles
Abstract:Within this study, new materials were synthesized and characterized based on polysiloxane modified with different ratios of N-acetyl-l-cysteine (NAC) and crosslinked via UV-assisted thiol-ene addition, in order to obtain efficient membranes able to resist bacterial adherence and biofilm formation. These membranes were subjected to in vitro testing for microbial adherence against S. pneumoniae using standardized tests. WISTAR rats were implanted for 4 weeks with crosslinked siloxane samples without and with NAC. A set of physical characterization methods was employed to assess the chemical structure and morphological aspects of the new synthetized materials before and after contact with the microbiological medium.
Keywords:Streptococcus pneumoniae  N-acetyl-l-cysteine  antibacterial  cochlear implants
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