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Yang SK, Yusoff K, Mai CW, Lim WM, Yap WS, Lim SHE, Lai KS. Additivity vs Synergism: Investigation of the Additive Interaction of Cinnamon Bark Oil and Meropenem in Combinatory Therapy. Molecules 2017; 22:molecules22111733. [PMID: 29113046 PMCID: PMC6150308 DOI: 10.3390/molecules22111733] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 10/06/2017] [Accepted: 10/11/2017] [Indexed: 02/05/2023] Open
Abstract
Combinatory therapies have been commonly applied in the clinical setting to tackle multi-drug resistant bacterial infections and these have frequently proven to be effective. Specifically, combinatory therapies resulting in synergistic interactions between antibiotics and adjuvant have been the main focus due to their effectiveness, sidelining the effects of additivity, which also lowers the minimal effective dosage of either antimicrobial agent. Thus, this study was undertaken to look at the effects of additivity between essential oils and antibiotic, via the use of cinnamon bark essential oil (CBO) and meropenem as a model for additivity. Comparisons between synergistic and additive interaction of CBO were performed in terms of the ability of CBO to disrupt bacterial membrane, via zeta potential measurement, outer membrane permeability assay and scanning electron microscopy. It has been found that the additivity interaction between CBO and meropenem showed similar membrane disruption ability when compared to those synergistic combinations which was previously reported. Hence, results based on our studies strongly suggest that additive interaction acts on a par with synergistic interaction. Therefore, further investigation in additive interaction between antibiotics and adjuvant should be performed for a more in depth understanding of the mechanism and the impacts of such interaction.
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Affiliation(s)
- Shun-Kai Yang
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
| | - Khatijah Yusoff
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
| | - Chun-Wai Mai
- Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, No. 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000 Kuala Lumpur, Malaysia.
| | - Wei-Meng Lim
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University, No. 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000 Kuala Lumpur, Malaysia.
| | - Wai-Sum Yap
- Department of Biotechnology, Faculty of Applied Sciences, UCSI University, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Swee-Hua Erin Lim
- Perdana University-Royal College of Surgeons in Ireland, Perdana University, MAEPS Building, Serdang, Selangor, Malaysia.
- Health Sciences Division, Abu Dhabi Women's College, Higher Colleges of Technology, 41012 Abu Dhabi, United Arab Emirates.
| | - Kok-Song Lai
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
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Ivanov DV, Egorov AM. [Spreading and mechanisms of antimicrobial resistance of microorganisms, producing beta-lactamases. Phenotypical screening for MBL producers (carbapenemases B1) among strains of Pseudomonas genus, isolated in cases of nosocomial infections]. Biomed Khim 2007; 53:653-661. [PMID: 18323150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Intrahospital strains (215) of the bacterial genus Pseudomonas isolated from patients of 30 Medical centers of 15 Russian regions have been investigated for antibiotic resistance. The bacterial cultures resistant to imipenem and/or meropenem were considered as metallo-beta-lactamase (MBL) producers. Production of subclass B1 MBL (carbapenemases) was evaluated by means of the double-disk approximation test using MBL inhibitor, EDTA. There were 55 P. aeroginosa strains (25.6%) resistant to imipenem and meropenem simultaneously; 19 isolates (8.8%) of P. aeroginosa were characterized by synergism between carbapenem and EDTA. The subclass B1 MBL producers are widely distributed in the intrahospital strain obtained from Moscow, Yaroslavl, Ekaterinburg, Omsk, and Tomsk hospitals.
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