Antimicrobial and antibiofilm activities of 1-alkylquinolinium bromide ionic liquids
作者:Alessandro Busetti、Deborah E. Crawford、Martyn J. Earle、Manuela A. Gilea、Brendan F. Gilmore、Sean P. Gorman、Garry Laverty、Andrew F. Lowry、Martin McLaughlin、Kenneth R. Seddon
DOI:10.1039/b919872e
日期:——
Quinoline derivatives are known to possess a range of bioactive and medicinal activities, which have been exploited in the design of antibacterial, antifungal and antimalarial compounds. In this study, we report on the microbiological toxicity of a series of 1-alkylquinolinium bromides against a range of clinically relevant microorganisms, in both planktonic and sessile (biofilm) cultures. A comparison of antimicrobial activity against planktonic bacteria and established biofilms is presented. In general, 1-alkylquinolinium ionic liquids possess excellent, broad spectrum antimicrobial activity against microorganisms grown in both the planktonic and sessile, or biofilm, mode of growth. Importantly, these compounds are potent against Gram positive and Gram negative bacteria, as well as fungi, with a clear dependency on length of the alkyl substituent for activity, with compounds containing twelve and fourteen carbons in the alkyl group exhibiting highest antimicrobial and antibiofilm activity.
喹啉衍生物被认为具有一系列生物活性和药用活性,这些活性已被用于设计抗细菌、抗真菌和抗疟疾化合物。在本研究中,我们报告了一系列1-烷基喹啉铵溴化物对一系列临床相关微生物的微生物毒性,涉及浮游和附着(生物膜)培养。我们比较了对浮游细菌和形成的生物膜的抗菌活性。总体而言,1-烷基喹啉离子液体对浮游和附着(或生物膜)生长方式的微生物具有优秀的广谱抗菌活性。重要的是,这些化合物对革兰阳性和革兰阴性细菌以及真菌具有强效活性,并且其活性明显依赖于烷基取代基的长度,其中含有十二和十四个碳的烷基化合物表现出最高的抗菌和抗生物膜活性。