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Cationic Amphiphilic Polymers with Antimicrobial Activity for Oral Care Applications: Eradication of S. mutans Biofilm

机译:具有抗菌活性的阳离子两亲聚合物在口腔护理中的应用:消除变形链球菌生物膜

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摘要

The anti-bacterial and anti-biofilm activities of cationic amphiphilic methacrylate polymers against cariogenic bacterium S. mutans were investigated. Cationic homopolymer PE0 and copolymer PE31 containing 31 mole% of ethyl methacrylate were synthesized by reversible addition-fragmentation chain transfer polymerization. These polymers displayed bactericidal activity towards S. mutans and prevented biofilm formation by killing the planktonic bacteria. At a concentration of 1000 μg/mL when incubated for 2 hours the polymers reduced more than 80% of biofilm biomass. When the polymer assay solution with the biofilm was vigorously mixed using a pipette for 30 seconds, more than 50% of biofilm mass was removed at a polymer concentration of 250 μg/mL. Chlorhexidine and a cationic surfactant failed to reduce the biofilm mass at the same concentration. PE0 was the most effective in removing biofilm and did not show any significant cytotoxicity to human gingival fibroblast and periodontal ligament stem cells when incubated for 10 minutes.
机译:研究了阳离子两亲性甲基丙烯酸甲酯聚合物对致龋细菌变形链球菌的抗菌和生物膜活性。通过可逆加成-断裂链转移聚合合成阳离子均聚物PE0和包含31摩尔%的甲基丙烯酸乙酯的共聚物PE31。这些聚合物显示出对变形链球菌的杀菌活性,并通过杀死浮游细菌来防止生物膜的形成。孵育2小时后,浓度为1000μg/ mL时,聚合物会减少80%以上的生物膜生物量。当使用移液器将带有生物膜的聚合物测定溶液剧烈混合30秒时,在250μg/ mL的聚合物浓度下,去除了超过50%的生物膜质量。氯己定和阳离子表面活性剂未能在相同浓度下降低生物膜质量。孵育10分钟后,PE0对去除生物膜最有效,并且对人齿龈成纤维细胞和牙周膜干细胞没有明显的细胞毒性。

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