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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Yap, Polly Soo Xi Krishnan, Thiba Chan, Kok-Gan Lim, Swee Hua Erin |
| Description | Country affiliation: Malaysia Author Affiliation: Yap PS ( School of Postgraduate Studies and Research, International Medical University, 57000 Kuala Lumpur, Malaysia.); Krishnan T ( Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.); Chan KG ( Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.); Lim SH ( Department of Physiology, Perdana University-Royal College of Surgeons Ireland (PU-RCSI), 43400 Serdang, Selangor, Malaysia.) |
| Abstract | This study aimed to investigate the mechanism of action of the cinnamon bark essential oil (CB), when used singly and also in combination with piperacillin, for its antimicrobial and synergistic activity against beta-lactamase TEM-1 plasmid-conferred Escherichia coli J53 R1. Viable count of this combination showed a complete killing profile at 20 h and further confirmed its synergistic effect by reducing the bacteria cell numbers. Analysis on the stability of treated cultures for cell membrane permeability by CB when tested against sodium dodecyl sulfate revealed that the bacterial cell membrane was disrupted by the essential oils. Scanning electron microscopy observation and bacterial surface charge measurement also revealed that CB causes irreversible membrane damage and reduces the bacterial surface charge. In addition, bioluminescence expression of Escherichia coli [pSB1075] and E. coli [pSB401] by CB showed reduction, indicating the possibility of the presence of quorum sensing (QS) inhibitors. Gas-chromatography and mass spectrometry of the essential oil of Cinnamomum verum showed that trans-cinnamaldehyde (72.81%), benzyl alcohol (12.5%), and eugenol (6.57%) were the major components in the essential oil. From this study, CB has the potential to reverse E. coli J53 R1 resistance to piperacillin through two pathways; modification in the permeability of the outer membrane or bacterial QS inhibition. |
| File Format | HTM / HTML |
| ISSN | 10177825 |
| e-ISSN | 17388872 |
| Journal | Journal of Microbiology and Biotechnology |
| Issue Number | 8 |
| Volume Number | 25 |
| Language | English |
| Publisher | Korean Society for Microbiology and Biotechnology |
| Publisher Date | 2015-08-01 |
| Publisher Place | Korea (South) |
| Access Restriction | Open |
| Subject Keyword | Discipline Microbiology Discipline Biotechnology Anti-bacterial Agents Pharmacology Cinnamomum Zeylanicum Chemistry Drug Resistance, Multiple, Bacterial Drug Synergism Escherichia Coli Drug Effects Oils, Volatile Piperacillin Isolation & Purification Cell Membrane Ultrastructure Colony Count, Microbial Enzymology Genetics Gas Chromatography-mass Spectrometry Microbial Viability Microscopy, Electron, Scanning Plant Bark Plasmids Quorum Sensing Beta-lactamases Secretion Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Applied Microbiology and Biotechnology Biotechnology |
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