Essential oils of Origanum compactum increase membrane permeability,disturb cell membrane integrity,and suppress quorum-sensing phenotype in bacteria  

作　　者：Abdelhakim Bouyahya Jamal Abrini Nadia Dakka Youssef Bakri 

机构地区：[1]Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, and Genomic Center of Human Pathologies, Faculty of Medicine and Pharmacy, Mohammed V University, Rabat, Morocco [2]Biology and Health Laboratory, Department of Biology, Faculty of Science, Abdelmalek Essaadi University, Tetouan, Morocco

出　　处：《Journal of Pharmaceutical Analysis》2019年第5期301-311,共11页药物分析学报（英文版）

基　　金：the "Centre National pour la Recherche Scientifique et Technique" (CNRST) ;"Agence Nationale des Plantes Medicinales et Aromatiques" (ANPMA) for their funding supports

摘　　要：The aim of this study was to investigate antibacterial activity of Origanum compactum essential oils collected at three phenological stages on Escherichia coli and Bacillus subtilis. The antibacterial activity was evaluated using the agar-well diffusion assay. The MIC and MBC values were determined using the micro-dilution assay. The investigation of the antibacterial action was carried out by the evaluation of the effect of O. compactum essential oils on the antibacterial kinetic growth, the integrity of cell membrane and permeability of the cell membrane. The anti-quorum sensing activity was tested by the inhibition of the biofilm formation. The findings of this study showed that O. compactum essential oil has potent antibacterial activities against E. coli and B. subtilis. The lowest inhibition value against B. subtilis was obtained with O. compactum essential oil at the post-flowering stage (MIC=MBC=0.0312%(v/v)). The antibacterial mechanisms of O. compactum essential oils are related to the disturbing of the cell membrane integrity and the increasing of the membrane permeability, which leads to the leakage of genetic materials (DNA and RNA). Moreover, O. compactum essential oils inhibited the formation of the biofilms, a phenotype that has been known to be quorum sensing regulated.The aim of this study was to investigate antibacterial activity of Origanum compactum essential oils collected at three phenological stages on Escherichia coli and Bacillus subtilis.The antibacterial activity was evaluated using the agar-well diffusion assay.The MIC and MBC values were determined using the micro-dilution assay.The investigation of the antibacterial action was carried out by the evaluation of the effect of O.compactum essential oils on the antibacterial kinetic growth,the integrity of cell membrane and permeability of the cell membrane.The anti-quorum sensing activity was tested by the inhibition of the biofilm formation.The findings of this study showed that O.compactum essential oil has potent antibacterial activities against E.coli and B.subtilis.The lowest inhibition value against B.subtilis was obtained with O.compactum essential oil at the post-flowering stage (MIC=MBC=0.0312%(v/v)).The antibacterial mechanisms of O.compactum essential oils are related to the disturbing of the cell membrane integrity and the increasing of the membrane permeability,which leads to the leakage of genetic materials (DNA and RNA).Moreover,O.compactum essential oils inhibited the formation of the biofilms,a phenotype that has been known to be quorum sensing regulated.

关 键 词：ORIGANUM COMPACTUM Essential oil Antibacterial action Cell membrane QUORUM sensing inhibition 

分 类 号：R[医药卫生]