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Wongso H, Hendra R, Nugraha AS, Ritawidya R, Saptiama I, Kusumaningrum CE. Microbial metabolites diversity and their potential as molecular template for the discovery of new fluorescent and radiopharmaceutical probes. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Peris-Vicente J, Peris-García E, Albiol-Chiva J, Durgbanshi A, Ochoa-Aranda E, Carda-Broch S, Bose D, Esteve-Romero J. Liquid chromatography, a valuable tool in the determination of antibiotics in biological, food and environmental samples. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107309] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Short FL, Lee V, Mamun R, Malmberg R, Li L, Espinosa MI, Venkatesan K, Paulsen IT. Benzalkonium chloride antagonises aminoglycoside antibiotics and promotes evolution of resistance. EBioMedicine 2021; 73:103653. [PMID: 34717227 PMCID: PMC8577336 DOI: 10.1016/j.ebiom.2021.103653] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/15/2021] [Accepted: 10/12/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Biocide disinfectants are essential tools in infection control, but their use can inadvertently contribute to emergence of antibiotic-resistant bacteria. In this study we systematically examine the effect of the biocide benzalkonium chloride, which is primarily used for surface disinfection but is also present as a preservative in many consumer products, on the activity of aminoglycoside antibiotics in Acinetobacter baumannii. METHODS The effect of subinhibitory BAC on aminoglycoside treatment of A. baumannii ATCC17978 was investigated using time-to-kill assays, MIC determination, directed evolution experiments, fluctuation tests and labelled gentamicin accumulation assays. Further MIC determinations and directed evolution experiments were performed with additional Gram-negative ESKAPE pathogens. FINDINGS In A. baumannii ATCC17978, BAC prevents gentamicin killing and drastically increases the frequency at which resistant mutants emerge, through reducing intracellular antibiotic accumulation. BAC also increases the MIC of multiple aminoglycoside antibiotics (kanamycin, tobramycin, streptomycin, gentamicin and amikacin). BAC promotes the emergence of mutants with reduced gentamicin susceptibility in other Gram-negative ESKAPE pathogens but does not always alter the MIC. These effects occur at BAC concentrations which are similar to residual levels in high-use environments, and just below the concentration range for BAC when used as a preservative in eye drops and ear drops. INTERPRETATION Our results suggest that subinhibitory BAC has the potential to antagonise aminoglycoside activity and promote the emergence of bacterial mutants with reduced susceptibility. We suggest that the extremely widespread use of BAC in clinical and home settings and its long half-life mean there is potential for these interactions to occur in the environment, or in patients who use BAC-containing products while taking aminoglycosides to treat skin, eye or ear infections, although such co-exposure is likely to be rare. We suggest that biocide stewardship is needed to prevent the types of exposure that can contribute to antibiotic resistance. FUNDING This work was funded by the National Health and Medical Research Council of Australia. The funders had no role in study design, interpretation or decision to publish.
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Affiliation(s)
- Francesca L Short
- Department of Molecular Sciences, Macquarie University, North Ryde, NSW, Australia; ARC Centre of Excellence in Synthetic Biology, Macquarie University, North Ryde, NSW, Australia; Department of Microbiology, Biomedicine Discovery Institute, Monash University, VIC, Australia.
| | - Victor Lee
- Department of Molecular Sciences, Macquarie University, North Ryde, NSW, Australia
| | - Rafa Mamun
- Department of Molecular Sciences, Macquarie University, North Ryde, NSW, Australia
| | - Robert Malmberg
- Department of Molecular Sciences, Macquarie University, North Ryde, NSW, Australia
| | - Liping Li
- Department of Molecular Sciences, Macquarie University, North Ryde, NSW, Australia; ARC Centre of Excellence in Synthetic Biology, Macquarie University, North Ryde, NSW, Australia
| | - Monica I Espinosa
- Department of Molecular Sciences, Macquarie University, North Ryde, NSW, Australia
| | - Koushik Venkatesan
- Department of Molecular Sciences, Macquarie University, North Ryde, NSW, Australia
| | - Ian T Paulsen
- Department of Molecular Sciences, Macquarie University, North Ryde, NSW, Australia; ARC Centre of Excellence in Synthetic Biology, Macquarie University, North Ryde, NSW, Australia.
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Brozmanova H, Urinovska R, Safarcik K, Vsiansky F, Kacirova I, Grundmann M. Liquid chromatography-tandem mass spectrometry method for quantification of gentamicin and its individual congeners in serum and comparison results with two immunoanalytical methods (fluorescence polarization immunoassay and chemiluminiscent microparticle immunoassay). Clin Chim Acta 2021; 521:191-198. [PMID: 34274343 DOI: 10.1016/j.cca.2021.07.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/13/2021] [Accepted: 07/13/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND Total gentamicin is a sum of five congeners C1, C1a, C2, C2a and minor C2b, which differ from each other in their methylation on the purpurosamine ring. Liquid chromatography with mass detection (LC-MS/MS) and specified calibration material enables the concentration of total gentamicin and its individual congeners to be analysed. METHODS 50 µL serum was precipitated with acetonitrile in the presence of 0.5 mol/L formic acid. A RP BEH C18 1.7 µm 2.1x50 mm column maintained at 30 °C and tobramicin as the internal standard were used. Mass detection was performed in positive electrospray. The gentamicin results were compared with fluorescence polarization immunoassay (FPIA) and chemiluminiscent microparticle immunoassay (CMIA). Passing-Bablock regression analysis and Bland-Altman analysis were used. RESULTS Calibration curves for individual gentamicin congeners were linear with correlation coefficients between 0.997 and 0.998. Recovery was 91.6-102.0% and the coefficients of variation 1.4-8.4%. The total gentamicin concentration was compared with immunoassay FPIA (LC-MSgen = 0.9798xPFIAgen) and CMIA (LC MSgen = 0.9835xCMIAgen) both with significant correlation (p < 0.001). CONCLUSION The LC-MS/MS method is fast and precise and can be applied to routine TDM in patients. Comparing it to immunoassays makes it possible to measure concentration of gentamicin congeners, which may be important in the case of their different pharmacokinetics.
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Affiliation(s)
- Hana Brozmanova
- Institute of Clinical Pharmacology, Faculty of Medicine, University of Ostrava, Syllabova 19, 703 00 Ostrava, Czech Republic; Department of Clinical Pharmacology, Department of Laboratory Medicine, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic
| | - Romana Urinovska
- Institute of Clinical Pharmacology, Faculty of Medicine, University of Ostrava, Syllabova 19, 703 00 Ostrava, Czech Republic; Department of Clinical Pharmacology, Department of Laboratory Medicine, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic.
| | - Kristian Safarcik
- Department of Clinical Biochemistry, Department of Laboratory Medicine, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic; Department of Biomedical Sciences, Faculty of Medicine, University of Ostrava, Syllabova 19, 703 00 Ostrava, Czech Republic
| | - Frantisek Vsiansky
- Department of Clinical Biochemistry, Department of Laboratory Medicine, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic
| | - Ivana Kacirova
- Institute of Clinical Pharmacology, Faculty of Medicine, University of Ostrava, Syllabova 19, 703 00 Ostrava, Czech Republic; Department of Clinical Pharmacology, Department of Laboratory Medicine, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic
| | - Milan Grundmann
- Institute of Clinical Pharmacology, Faculty of Medicine, University of Ostrava, Syllabova 19, 703 00 Ostrava, Czech Republic
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Nieves I, Hally C, Viappiani C, Agut M, Nonell S. A porphycene-gentamicin conjugate for enhanced photodynamic inactivation of bacteria. Bioorg Chem 2020; 97:103661. [PMID: 32086054 DOI: 10.1016/j.bioorg.2020.103661] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 02/08/2020] [Accepted: 02/10/2020] [Indexed: 11/27/2022]
Abstract
A novel photoantimicrobial agent, namely 2-aminothiazolo[4,5-c]-2,7,12,17-tetrakis(methoxyethyl)porphycene (ATAZTMPo-gentamicin) conjugate, has been prepared by a click reaction between the red-light absorbing 9-isothiocyanate-2,7,12,17-tetrakis(methoxyethyl)porphycene (9-ITMPo) and the antibiotic gentamicin. The conjugate exhibits submicromolar activity in vitro against both Gram-positive and Gram-negative bacteria (Staphylococcus aureus and Escherichia coli, respectively) upon exposure to red light and is devoid of any cytotoxicity in the dark. The conjugate outperforms the two components delivered separately, which may be used to enhance the therapeutic index of gentamicin, broaden the spectrum of pathogens against which it is effective and reduce its side effects. Additionally, we report a novel straightforward synthesis of 2,7,12,17-tetrakis(methoxyethyl) porphycene (TMPo) that decreases the number of steps from nine to six.
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Affiliation(s)
- Ingrid Nieves
- Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain
| | - Cormac Hally
- Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain; Dipartamento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parco Area delle Scienze 7A, 43124 Parma, Italy
| | - Cristiano Viappiani
- Dipartamento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parco Area delle Scienze 7A, 43124 Parma, Italy
| | - Montserrat Agut
- Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain
| | - Santi Nonell
- Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain.
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Arhoutane MR, Yahya MS, Karbane ME, Kacemi KE. Oxidative degradation of gentamicin present in water by an electro-Fenton process and biodegradability improvement. OPEN CHEM 2019. [DOI: 10.1515/chem-2019-0110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractIn the context of environmental protection, where there is a need to develop effective operations for carrying out appropriate treatment of polluted water by pharmaceuticals. Therefore, the present study aims at evaluating the degradation for gentamicin through electro-Fenton (EF) operation, through taking into consideration the effect of several parameters of experimental in the process, namely, the concentration of initial gentamicin, the applied current and the Fe+2 (II) quantities. The (EF) operation employed involves a carbon-felt as cathode and platinum as anode at pH 3. Studies for the gentamicin kinetics is monitored by HPLC giving a pseudo-first order reaction following by a chemical oxygen demand, with a reached degree of mineralization 96% after of four hours of treatment through current 100 mA/cm2 with 0.1 mM of Fe+2. We find that the degradation for molecule of gentamicin is accompanied by an augmentation of the biodegradability, assesse through the Biochemical Oxygen Demand (BOD5) on chemical oxygen demand (COD) ratio, that augmentation from 0 to 0.41 before treatment after 30 min for EF treatment, showing that there is potential for conjugation of the EF process and the biological process. Furthermore, the by-products have been identified on the basis of HPLC-MS/MS results.
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Affiliation(s)
- Mohamed Réda Arhoutane
- Laboratory of Electrochemistry and Analytical Chemistry (LECA), Faculty of Sciences of Rabat, Mohammed V University, Rabat, Morocco
| | - Muna Shueai Yahya
- Department of Chemistry, Faculty of Education, Hodeidah University of Hodeida, Hodeida, Yemen
| | - Miloud El Karbane
- Laboratoire de Chimie Analytique et Bromatologie, Faculté de Médecine et de Pharmacie, Université Mohamed V, Rabat, Maroc
| | - Kacem El Kacemi
- Laboratory of Electrochemistry and Analytical Chemistry (LECA), Faculty of Sciences of Rabat, Mohammed V University, Rabat, Morocco
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Alternative Enzyme Protection Assay To Overcome the Drawbacks of the Gentamicin Protection Assay for Measuring Entry and Intracellular Survival of Staphylococci. Infect Immun 2019; 87:IAI.00119-19. [PMID: 30782857 DOI: 10.1128/iai.00119-19] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 02/08/2019] [Indexed: 12/28/2022] Open
Abstract
Precise enumeration of living intracellular bacteria is the key step to estimate the invasion potential of pathogens and host immune responses to understand the mechanism and kinetics of bacterial pathogenesis. Therefore, quantitative assessment of host-pathogen interactions is essential for development of novel antibacterial therapeutics for infectious disease. The gentamicin protection assay (GPA) is the most widely used method for these estimations by counting the CFU of intracellular living pathogens. Here, we assess the longstanding drawbacks of the GPA by employing an antistaphylococcal endopeptidase as a bactericidal agent to kill extracellular Staphylococcus aureus We found that the difference between the two methods for the recovery of intracellular CFU of S. aureus was about 5 times. We prove that the accurate number of intracellular CFU could not be precisely determined by the GPA due to the internalization of gentamicin into host cells during extracellular bacterial killing. We further demonstrate that lysostaphin-mediated extracellular bacterial clearance has advantages for measuring the kinetics of bacterial internalization on a minute time scale due to the fast and tunable activity and the inability of protein to permeate the host cell membrane. From these results, we propose that accurate quantification of intracellular bacteria and measurement of internalization kinetics can be achieved by employing enzyme-mediated killing of extracellular bacteria (enzyme protection assay [EPA]) rather than the host-permeative drug gentamicin, which is known to alter host physiology.
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Dai T, Zhang C, Geng Y, Pan Y, He L. A rapid assay of identification for glimepiride and its cis-isomer by tandem mass spectrometry. Talanta 2018; 187:172-178. [DOI: 10.1016/j.talanta.2018.04.093] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 04/18/2018] [Accepted: 04/29/2018] [Indexed: 01/31/2023]
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Wang X, Yang S, Li Y, Zhang J, Jin Y, Zhao W, Zhang Y, Huang J, Wang P, Wu C, Zhou J. Optimization and application of parallel solid-phase extraction coupled with ultra-high performance liquid chromatography–tandem mass spectrometry for the determination of 11 aminoglycoside residues in honey and royal jelly. J Chromatogr A 2018; 1542:28-36. [DOI: 10.1016/j.chroma.2018.02.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 02/07/2018] [Accepted: 02/17/2018] [Indexed: 01/31/2023]
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Fluorescent Antibiotics: New Research Tools to Fight Antibiotic Resistance. Trends Biotechnol 2018; 36:523-536. [PMID: 29478675 DOI: 10.1016/j.tibtech.2018.01.004] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 01/10/2018] [Accepted: 01/11/2018] [Indexed: 01/02/2023]
Abstract
Better understanding how multidrug-resistant (MDR) bacteria can evade current and novel antibiotics requires a better understanding of the chemical biology of antibiotic action. This necessitates using new tools and techniques to advance our knowledge of bacterial responses to antibiotics, ideally in live cells in real time, to selectively investigate bacterial growth, division, metabolism, and resistance in response to antibiotic challenge. In this review, we discuss the preparation and biological evaluation of fluorescent antibiotics, focussing on how these reporters and assay methods can help elucidate resistance mechanisms. We also examine the potential utility of such probes for real-time in vivo diagnosis of infections.
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