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Garcia MT, Ribosa I, González JJ, Comelles F. Surface activity, self-aggregation and antimicrobial activity of catanionic mixtures of surface active imidazolium- or pyridinium-based ionic liquids and sodium bis(2-ethylhexyl) sulfosuccionate. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112637] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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202
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Xie SX, Song L, Yuca E, Boone K, Sarikaya R, VanOosten SK, Misra A, Ye Q, Spencer P, Tamerler C. Antimicrobial Peptide-Polymer Conjugates for Dentistry. ACS APPLIED POLYMER MATERIALS 2020; 2:1134-1144. [PMID: 33834166 PMCID: PMC8026165 DOI: 10.1021/acsapm.9b00921] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Bacterial adhesion and growth at the composite/adhesive/tooth interface remain the primary cause of dental composite restoration failure. Early colonizers, including Streptococcus mutans, play a critical role in the formation of dental caries by creating an environment that reduces the adhesive's integrity. Subsequently, other bacterial species, biofilm formation, and lactic acid from S. mutans demineralize the adjoining tooth. Because of their broad spectrum of antibacterial activity and low risk for antibiotic resistance, antimicrobial peptides (AMPs) have received significant attention to prevent bacterial biofilms. Harnessing the potential of AMPs is still very limited in dentistry-a few studies have explored peptide-enabled antimicrobial adhesive copolymer systems using mainly nonspecific adsorption. In the current investigation, to avoid limitations from nonspecific adsorption and to prevent potential peptide leakage out of the resin, we conjugated an AMP with a commonly used monomer for dental adhesive formulation. To tailor the flexibility between the peptide and the resin material, we designed two different spacer domains. The spacer-integrated antimicrobial peptides were conjugated to methacrylate (MA), and the resulting MA-AMP monomers were next copolymerized into dental adhesives as AMP-polymer conjugates. The resulting bioactivity of the polymethacrylate-based AMP conjugated matrix activity was investigated. The antimicrobial peptide conjugated to the resin matrix demonstrated significant antimicrobial activity against S. mutans. Secondary structure analyses of conjugated peptides were applied to understand the activity differential. When mechanical properties of the adhesive system were investigated with respect to AMP and cross-linking concentration, resulting AMP-polymer conjugates maintained higher compressive moduli compared to hydrogel analogues including polyHEMA. Overall, our result provides a robust approach to develop a fine-tuned bioenabled peptide adhesive system with improved mechanical properties and antimicrobial activity. The results of this study represent a critical step toward the development of peptide-conjugated dentin adhesives for treatment of secondary caries and the enhanced durability of dental composite restorations.
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Affiliation(s)
| | | | - Esra Yuca
- University of Kansas (KU), Lawrence, Kansas, and Yildiz Technical University, Istanbul, Turkey
| | - Kyle Boone
- University of Kansas (KU), Lawrence, Kansas
| | | | | | - Anil Misra
- University of Kansas (KU), Lawrence, Kansas
| | - Qiang Ye
- University of Kansas (KU), Lawrence, Kansas
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203
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Ribič U, Jakše J, Toplak N, Koren S, Kovač M, Klančnik A, Jeršek B. Transporters and Efflux Pumps Are the Main Mechanisms Involved in Staphylococcus epidermidis Adaptation and Tolerance to Didecyldimethylammonium Chloride. Microorganisms 2020; 8:E344. [PMID: 32121333 PMCID: PMC7143832 DOI: 10.3390/microorganisms8030344] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/27/2020] [Accepted: 02/28/2020] [Indexed: 01/28/2023] Open
Abstract
Staphylococcus epidermidis cleanroom strains are often exposed to sub-inhibitory concentrations of disinfectants, including didecyldimethylammonium chloride (DDAC). Consequently, they can adapt or even become tolerant to them. RNA-sequencing was used to investigate adaptation and tolerance mechanisms of S. epidermidis cleanroom strains (SE11, SE18), with S. epidermidis SE11Ad adapted and S. epidermidis SE18To tolerant to DDAC. Adaptation to DDAC was identified with up-regulation of genes mainly involved in transport (thioredoxin reductase [pstS], the arsenic efflux pump [gene ID, SE0334], sugar phosphate antiporter [uhpT]), while down-regulation was seen for the Agr system (agrA, arC, agrD, psm, SE1543), for enhanced biofilm formation. Tolerance to DDAC revealed the up-regulation of genes associated with transporters (L-cysteine transport [tcyB]; uracil permease [SE0875]; multidrug transporter [lmrP]; arsenic efflux pump [arsB]); the down-regulation of genes involved in amino-acid biosynthesis (lysine [dapE]; histidine [hisA]; methionine [metC]), and an enzyme involved in peptidoglycan, and therefore cell wall modifications (alanine racemase [SE1079]). We show for the first time the differentially expressed genes in DDAC-adapted and DDAC-tolerant S. epidermidis strains, which highlight the complexity of the responses through the involvement of different mechanisms.
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Affiliation(s)
- Urška Ribič
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; (U.R.); (A.K.)
| | - Jernej Jakše
- Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia;
| | - Nataša Toplak
- Omega d.o.o., Dolinškova 8, SI-1000 Ljubljana, Slovenia; (N.T.); (S.K.); (M.K.)
| | - Simon Koren
- Omega d.o.o., Dolinškova 8, SI-1000 Ljubljana, Slovenia; (N.T.); (S.K.); (M.K.)
| | - Minka Kovač
- Omega d.o.o., Dolinškova 8, SI-1000 Ljubljana, Slovenia; (N.T.); (S.K.); (M.K.)
| | - Anja Klančnik
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; (U.R.); (A.K.)
| | - Barbara Jeršek
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; (U.R.); (A.K.)
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204
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Abstract
Biomedical devices have become essential in the health care. Every day, an enormous number of these devices are used or implanted in humans. In this context, the bacterial contamination that could be developed in implanted devices is critical since it is estimated that infections kill more people than other medical causes. Commonly, these infections are treated with antibiotics, but the biofilm formation on implant surfaces could significantly reduce the effectiveness of these antibiotics since bacteria inside the biofilm is protected from the drug. In some cases, a complete removal of the implant is necessary in order to overcome the infection. In this context, antibacterial coatings are considered an excellent strategy to avoid biofilm formation and, therefore, mitigate the derived complications. In this review, the main biomaterials used in biomedical devices, the mechanism of biofilm formation, and the main strategies for the development of antibacterial coatings, are reviewed. Finally, the main polymer-based strategies to develop antibacterial coatings are summarized, with the aim of these coatings being to avoid the bacteria proliferation by controlling the antibacterial mechanisms involved and enhancing long-term stability.
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205
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Zhou C, Wang Y. Structure–activity relationship of cationic surfactants as antimicrobial agents. Curr Opin Colloid Interface Sci 2020. [DOI: 10.1016/j.cocis.2019.11.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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206
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Ribič U, Polak T, Lušnic Polak M, Klančnik A, Jeršek B. Adaptation Response Mechanisms of Staphylococcus epidermidis Strains Exposed to Increasing Concentrations of Didecyldimethylammonium Chloride. Microb Drug Resist 2020; 26:583-593. [PMID: 31910354 DOI: 10.1089/mdr.2019.0064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Staphylococcus epidermidis is a commensal inhabitant of human skin and mucosa, and a common nosocomial pathogen in immunocompromised patients. S. epidermidis strains were isolated from places with precisely defined and controlled air quality and regular cleaning and disinfection regimes-cleanrooms. These strains were adapted to increasing concentrations of the quaternary ammonium disinfectant didecyldimethylammonium chloride (DDAC). Compared to nonadapted strains, these strains became adapted to up to 180-fold higher concentrations of DDAC, as seen by their increased minimal inhibitory concentrations. Examination of the stability of adaptation showed that three strains became permanently adapted to DDAC and named as resistant strains, and four strains were temporarily adapted to DDAC and named as strains with higher tolerance to DDAC. Some adapted strains showed cross-resistance to benzalkonium chloride and/or antibiotics. The adaptation response mechanisms of these DDAC-adapted strains were also investigated. The majority of adapted strains showed modifications to cell size and fatty acid composition. Some of the adapted strains showed changes in biofilm formation and overexpression of efflux pumps. Three adapted strains also showed altered growth rates. In this first report of adaptation of S. epidermidis strains to DDAC, the fatty acid profiling showed that the majority of strains had reduced ratio of saturated to unsaturated fatty acids and decreased content of straight-chain fatty acids, at the expense of the anteiso-branched fatty acids. We can conclude that S. epidermidis strains can adapt or become resistant to DDAC. We have revealed several adaptive response mechanisms that can be targeted for control and inhibition of S. epidermidis in cleanrooms and other clean processing environments.
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Affiliation(s)
- Urška Ribič
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Tomaž Polak
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Mateja Lušnic Polak
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Anja Klančnik
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Barbara Jeršek
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
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207
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Konai MM, Pakrudheen I, Barman S, Sharma N, Tabbasum K, Garg P, Haldar J. Cyclam-based antibacterial molecules eradicate Gram-negative superbugs with potent efficacy against human corneal infection. Chem Commun (Camb) 2020; 56:2147-2150. [DOI: 10.1039/c9cc06967d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclam-based antibacterial molecules (CAMs) that display potent activity against both the planktonic and stationary phase of multidrug-resistant Gram-negative bacteria were rationally designed.
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Affiliation(s)
- Mohini Mohan Konai
- Antimicrobial Research Laboratory
- New Chemistry Unit and School of Advanced Materials
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bengaluru 560064
- India
| | - Iqbal Pakrudheen
- Antimicrobial Research Laboratory
- New Chemistry Unit and School of Advanced Materials
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bengaluru 560064
- India
| | - Swagatam Barman
- Antimicrobial Research Laboratory
- New Chemistry Unit and School of Advanced Materials
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bengaluru 560064
- India
| | - Natalia Sharma
- L V Prasad Eye Institute
- L V Prasad Marg
- Banjara Hills
- Hyderabad 500034
- India
| | - Khatija Tabbasum
- L V Prasad Eye Institute
- L V Prasad Marg
- Banjara Hills
- Hyderabad 500034
- India
| | - Prashant Garg
- L V Prasad Eye Institute
- L V Prasad Marg
- Banjara Hills
- Hyderabad 500034
- India
| | - Jayanta Haldar
- Antimicrobial Research Laboratory
- New Chemistry Unit and School of Advanced Materials
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bengaluru 560064
- India
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208
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Zhang F, Yang L, Hu C, Li L, Wang J, Luo R, Wang Y. Phosphorylcholine- and cation-bearing copolymer coating with superior antibiofilm and antithrombotic properties for blood-contacting devices. J Mater Chem B 2020; 8:8433-8443. [DOI: 10.1039/d0tb01662d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The phosphorylcholine- and cation-bering copolymer coating endowed the blood-contacting devices with superior antibiofilm and antithrombotic ability.
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Affiliation(s)
- Fanjun Zhang
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - Li Yang
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - Cheng Hu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - Linhua Li
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - Jingyu Wang
- First Affiliated Hospital of Xi’an Jiaotong University
- Xi’an 710061
- China
| | - Rifang Luo
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
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209
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Brush-modified materials: Control of molecular architecture, assembly behavior, properties and applications. Prog Polym Sci 2020. [DOI: 10.1016/j.progpolymsci.2019.101180] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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210
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Kreofsky NW, Dillenburg MD, Villa EM, Fletcher JT. Ru(II) coordination compounds of N-N bidentate chelators with 1,2,3 triazole and isoquinoline subunits: Synthesis, spectroscopy and antimicrobial properties. Polyhedron 2019; 177. [PMID: 32863525 DOI: 10.1016/j.poly.2019.114259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Bidentate chelators 1-(1-benzyl-1,2,3-triazol-4-yl)isoquinoline and 3-(1-benzyl-1,2,3-triazol-4-yl)isoquinoline were prepared from benzyl bromide and trimethylsilylethynylisoquinoline precursors using a tandem deprotection/substitution/CuAAC synthetic approach. Each chelator is capable of forming a stable 3:1 Ru(II) coordination compound, which forms as a geometric isomer mixture. These Ru(II) complexes possess unique MLCT absorbance signatures at 450/472 nm (1-isomer) and 367 nm (3-isomer) relative to their constituent chelating units. Minimum inhibitory concentration values as low as 0.4 μM are observed for Ru(II) complexes against representative Gram-positive bacteria Bacillus subtilis and Staphylococcus epidermidis. Comparing the MIC values of these isoquinoline compounds with analogous 2-(1-benzyl-1,2,3-triazol-4-yl)pyridine compounds shows a 2.5- to 40-fold improvement in potency. This study establishes that increased hydrophobicity introduced at the central chelating units of Ru(II) coordination compounds can be a useful means by which to optimize antimicrobial activity that is complimentary to the variation of peripheral substituent identity at the chelator's N1 triazole position.
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Affiliation(s)
- Nicholas W Kreofsky
- Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, NE 68178, U.S.A
| | - Maxwell D Dillenburg
- Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, NE 68178, U.S.A
| | - Eric M Villa
- Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, NE 68178, U.S.A
| | - James T Fletcher
- Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, NE 68178, U.S.A
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211
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Li L, Wang H, Jia D, Wang P. Synthesis of Gemini‐QA
N
‐Chloramine Biocides for Antibacterial Applications. ChemistrySelect 2019. [DOI: 10.1002/slct.201903585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lingdong Li
- School of Petroleum and Chemical EngineeringDalian University of Technology, State Key Laboratory of Fine Chemicals 2 Dagong Road, Liaodongwan New District Panjin 124221 China
| | - Hande Wang
- School of Petroleum and Chemical EngineeringDalian University of Technology, State Key Laboratory of Fine Chemicals 2 Dagong Road, Liaodongwan New District Panjin 124221 China
| | - Dongxue Jia
- School of Petroleum and Chemical EngineeringDalian University of Technology, State Key Laboratory of Fine Chemicals 2 Dagong Road, Liaodongwan New District Panjin 124221 China
| | - Pengfei Wang
- School of Petroleum and Chemical EngineeringDalian University of Technology, State Key Laboratory of Fine Chemicals 2 Dagong Road, Liaodongwan New District Panjin 124221 China
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212
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Huigens RW, Abouelhassan Y, Yang H. Phenazine Antibiotic-Inspired Discovery of Bacterial Biofilm-Eradicating Agents. Chembiochem 2019; 20:2885-2902. [PMID: 30811834 PMCID: PMC7325843 DOI: 10.1002/cbic.201900116] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Indexed: 12/19/2022]
Abstract
Bacterial biofilms are surface-attached communities of slow-growing and non-replicating persister cells that demonstrate high levels of antibiotic tolerance. Biofilms occur in nearly 80 % of infections and present unique challenges to our current arsenal of antibiotic therapies, all of which were initially discovered for their abilities to target rapidly dividing, free-floating planktonic bacteria. Bacterial biofilms are credited as the underlying cause of chronic and recurring bacterial infections. Innovative approaches are required to identify new small molecules that operate through bacterial growth-independent mechanisms to effectively eradicate biofilms. One source of inspiration comes from within the lungs of young cystic fibrosis (CF) patients, who often endure persistent Staphylococcus aureus infections. As these CF patients age, Pseudomonas aeruginosa co-infects the lungs and utilizes phenazine antibiotics to eradicate the established S. aureus infection. Our group has taken a special interest in this microbial competition strategy and we are investigating the potential of phenazine antibiotic-inspired compounds and synthetic analogues thereof to eradicate persistent bacterial biofilms. To discover new biofilm-eradicating agents, we have established an interdisciplinary research program involving synthetic medicinal chemistry, microbiology and molecular biology. From these efforts, we have identified a series of halogenated phenazines (HPs) that potently eradicate bacterial biofilms, and future work aims to translate these preliminary findings into ground-breaking clinical advances for the treatment of persistent biofilm infections.
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Affiliation(s)
- Robert W. Huigens
- Department of Medicinal Chemistry; Center for Natural Products Drug Discovery and Development (CNPD3); University of Florida, Gainesville, FL, USA
| | - Yasmeen Abouelhassan
- Department of Medicinal Chemistry; Center for Natural Products Drug Discovery and Development (CNPD3); University of Florida, Gainesville, FL, USA
| | - Hongfen Yang
- Department of Medicinal Chemistry; Center for Natural Products Drug Discovery and Development (CNPD3); University of Florida, Gainesville, FL, USA
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213
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Salajkova S, Sramek M, Malinak D, Havel F, Musilek K, Benkova M, Soukup O, Vasicova P, Prchal L, Dolezal R, Hodny Z, Bartek J, Zarska M, Kuca K. Highly hydrophilic cationic gold nanorods stabilized by novel quaternary ammonium surfactant with negligible cytotoxicity. JOURNAL OF BIOPHOTONICS 2019; 12:e201900024. [PMID: 31298802 DOI: 10.1002/jbio.201900024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 07/10/2019] [Accepted: 07/10/2019] [Indexed: 06/10/2023]
Abstract
The photothermal cancer therapy using cationic gold nanorods (GNRs) stabilized by quaternary ammonium salts (QAS) have a great potential to enhance conventional cancer treatment as it promises the effective eradication of cancer cells including cells resistant to radio- and chemo-therapy and the stimulation of anti-tumor immune response. However, as the cytotoxicity of the conventional alkanethiol-QAS compounds limits their utility in medicine, here we developed GNRs modified by novel highly hydrophilic cationic surfactant composed of the quaternary ammonium group and ethylene glycol chain N,N,N-trimethyl-3,6,9,12,15-pentaoxaheptadecyl-17-sulfanyl-1-ammonium bromide (POSAB) showing insignificant cytotoxicity in the free state. Surface modification of GNRs by POSAB allowed to prepare nanoparticles with good stability in water, high cellular uptake and localization in lysosomes that are a promising alternative to alkanethiol-stabilized GNRs especially for biomedical applications.
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Affiliation(s)
- Sarka Salajkova
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic
| | - Michal Sramek
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - David Malinak
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Filip Havel
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
- Department of Physical Electronics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic
| | - Kamil Musilek
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Marketa Benkova
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
- Department of Epidemiology, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic
| | - Ondrej Soukup
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Pavla Vasicova
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Lukas Prchal
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Rafael Dolezal
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Zdenek Hodny
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jiri Bartek
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
- Genome Integrity Unit, Danish Cancer Society Research Center, Copenhagen, Denmark
- Department of Medical Biochemistry and Biophysics, Science For Life Laboratory, Division of Genome Biology, Karolinska Institute, Solna, Sweden
| | - Monika Zarska
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
- Charles University, First Faculty of Medicine, Prague, Czech Republic
| | - Kamil Kuca
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
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214
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Kamal MA, Khalaf MA, Ahmed ZAM, Jakee JE. Evaluation of the efficacy of commonly used disinfectants against isolated chlorine-resistant strains from drinking water used in Egyptian cattle farms. Vet World 2019; 12:2025-2035. [PMID: 32095056 PMCID: PMC6989312 DOI: 10.14202/vetworld.2019.2025-2035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 11/18/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND AIM Drinking water of poor microbiological quality contains high percentages of microbes causing outbreaks of mainly coliform-related diseases. These microbes could be controlled by many hygienic standards including disinfection, but disinfectants misuse causes the developing of disinfectant-resistant strains. The present study aimed to investigate drinking water bacterial profile, determine chlorine-resistant strains, and statistically correlate that with the used disinfectant and disinfection process variables. In vitro evaluation of the bactericidal effect of the most commonly used disinfectants in cattle operations against the isolated chlorine-resistant strains and detection of qacE resistance gene in the isolated chlorine-resistant Escherichia coli strains in some cattle farms suffering coliform and non-coliform related disease around Egypt. MATERIALS AND METHODS A structured questionnaire is used to survey a convenience sample of 132 Egyptian cattle beef and dairy farms suffering emerged epidemics to identify commonly used disinfection process, disinfectant types, disinfectants frequency, and rate of use. One hundred and thirty-two water samples were collected for microbiological analysis to obtain water bacterial profile and testing resistance to chlorine. Statistical analysis was performed to identify the level of association between microbial profile and presence of chlorine-resistant strains in each farm with used disinfection, disinfectant types, and rate of use in these farms. RESULTS A wide range of disinfectant types used for variable purposes inside cattle farms with a different frequency of use and the highest percent of farms 25.8% use 4-5 types of disinfectants, followed by 25% of farms use two types, then 18.9% use three types. Microbial profile of water samples revealed isolation of E. coli, Streptococcus faecalis, Pseudomonas aeruginosa, Klebsiella spp., Proteus spp., Salmonella spp., Enterobacter spp., Citrobacter spp., Shigella flexneri, Serratia marcescens, and Yersinia enterocolitica in percent (98.5, 97.7, 97.7, 76.5, 66.7, 36.4, 78.8, 74.2, 30.3, 29.5, and 14.4% of cattle farms, respectively), from which five E. coli, four Salmonella, four Pseudomonas, two Klebsiella, and four Streptococcus strains expressed chlorine resistance. Statistical analysis showed weak to moderate correlation (rho 0.15-0.46) between bacterial profile strains count and presence of resistant strains with different farm disinfection, disinfectant types, and rate of use. Experimental evaluation of the bactericidal effect of the eight selected disinfectants on the chlorine-resistant isolated strains revealed that peroxymonosulfate killed 19/19 isolated strains/15 min contact time, and quaternary ammonium compounds killed only 3/19 strains/15 min contact time. The qacE resistance gene was detected in 3/4 isolated chlorine-resistant E. coli strains. CONCLUSION Drinking water microbial profile strains and resistance to disinfectants are widely varied in cattle farms, and this variance depends on critical factors among which the disinfection process types used disinfectant types and frequency of disinfectants use or change.
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Affiliation(s)
- Mohamed Abdelhameed Kamal
- Department of Veterinary Hygiene and Management, Faculty of Veterinary Medicine, Cairo University, Giza 11221, Egypt
| | - Mahmoud Abdelaty Khalaf
- Department of Veterinary Hygiene and Management, Faculty of Veterinary Medicine, Cairo University, Giza 11221, Egypt
| | - Zakia Attia Mohamed Ahmed
- Department of Veterinary Hygiene and Management, Faculty of Veterinary Medicine, Cairo University, Giza 11221, Egypt
| | - Jakeen El Jakee
- Department of Microbiology, Faculty of Veterinary Medicine, Cairo University, Giza 11221, Egypt
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215
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Ye W, Wang L, Zhao J, Fang QQ, Ming W. Recyclable, non-leaching antimicrobial magnetic nanoparticles. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.06.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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216
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Teirlinck E, Fraire J, Van Acker H, Wille J, Swimberghe R, Brans T, Xiong R, Meire M, De Moor R, De Smedt S, Coenye T, Braeckmans K. Laser-induced vapor nanobubbles improve diffusion in biofilms of antimicrobial agents for wound care. Biofilm 2019; 1:100004. [PMID: 33447791 PMCID: PMC7798460 DOI: 10.1016/j.bioflm.2019.100004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 05/16/2019] [Accepted: 06/17/2019] [Indexed: 12/23/2022] Open
Abstract
Being responsible for delayed wound healing, the presence of biofilms in infected wounds leads to chronic, and difficult to treat infections. One of the reasons why antimicrobial treatment often fails to cure biofilm infections is the reduced penetration rate of antibiotics through dense biofilms. Strategies that have the ability to somehow interfere with the integrity of biofilms and allowing a better penetration of drugs are highly sought after. A promising new approach is the use of laser-induced vapor nanobubbles (VNB), of which it was recently demonstrated that it can substantially enhance the penetration of antibiotics into biofilms, resulting in a marked improvement of the killing efficiency. In this study, we examined if treatment of biofilms with laser-induced vapor nanobubbles (VNB) can enhance the potency of antimicrobials which are commonly used to treat wound infections, including povidone-iodine, chlorhexidine, benzalkonium chloride, cetrimonium bromide and mupirocin. Our investigations were performed on Pseudomonas aeruginosa and Staphylococcus aureus biofilms, which are often implicated in chronic wound infections. Pre-treatment of biofilms with laser-induced VNB did enhance the killing efficiency of those antimicrobials which experience a diffusion barrier in the biofilms, while this was not the case for those compounds for which there is no diffusion barrier. The magnitude of the enhanced potency was in most cases similar to the enhancement that was obtained when the biofilms were completely disrupted by vortexing and sonication. These results show that laser-induced VNB are indeed a very efficient way to enhance drug penetration deep into biofilms, and pave the way towards clinical translation of this novel approach for treatment of wound infections.
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Affiliation(s)
- E. Teirlinck
- Laboratory of General Biochemistry and Physical Pharmacy, University of Ghent, Ghent, 9000, Belgium
- Centre for Nano- and Biophotonics, Ghent, 9000, Belgium
| | - J.C. Fraire
- Laboratory of General Biochemistry and Physical Pharmacy, University of Ghent, Ghent, 9000, Belgium
- Centre for Nano- and Biophotonics, Ghent, 9000, Belgium
| | - H. Van Acker
- Laboratory of Pharmaceutical Microbiology, University of Ghent, Ghent, 9000, Belgium
| | - J. Wille
- Laboratory of Pharmaceutical Microbiology, University of Ghent, Ghent, 9000, Belgium
| | - R. Swimberghe
- Department of Oral Health Sciences, Section of Endodontology, University of Ghent, Ghent, 9000, Belgium
| | - T. Brans
- Laboratory of General Biochemistry and Physical Pharmacy, University of Ghent, Ghent, 9000, Belgium
- Centre for Nano- and Biophotonics, Ghent, 9000, Belgium
| | - R. Xiong
- Laboratory of General Biochemistry and Physical Pharmacy, University of Ghent, Ghent, 9000, Belgium
- Centre for Nano- and Biophotonics, Ghent, 9000, Belgium
| | - M. Meire
- Department of Oral Health Sciences, Section of Endodontology, University of Ghent, Ghent, 9000, Belgium
| | - R.J.G. De Moor
- Department of Oral Health Sciences, Section of Endodontology, University of Ghent, Ghent, 9000, Belgium
| | - S.C. De Smedt
- Laboratory of General Biochemistry and Physical Pharmacy, University of Ghent, Ghent, 9000, Belgium
- Centre for Nano- and Biophotonics, Ghent, 9000, Belgium
| | - T. Coenye
- Laboratory of Pharmaceutical Microbiology, University of Ghent, Ghent, 9000, Belgium
| | - K. Braeckmans
- Laboratory of General Biochemistry and Physical Pharmacy, University of Ghent, Ghent, 9000, Belgium
- Centre for Nano- and Biophotonics, Ghent, 9000, Belgium
- IEMN UMR 8520, Université de Lille, Villeneuve d’Ascq, 59652, France
- Laboratoire de Physique des Lasers, Atomes et Molécules UMR 8523, Villeneuve d’Ascq, 59655, France
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217
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Márquez-Cadena MA, Ren J, Ye W, Qian P, Tong R. Asymmetric Total Synthesis Enables Discovery of Antibacterial Activity of Siladenoserinols A and H. Org Lett 2019; 21:9704-9708. [PMID: 31747295 DOI: 10.1021/acs.orglett.9b03857] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Siladenoserinols A and H were found to show moderate inhibitory activity toward p53-Hdm2 interactions. Our total synthesis allowed us to further examine their bioactivities, which revealed that (i) siladenoserinols A and H were not cytotoxic against cancer cell lines and (ii) siladenoserinol A and its desulfamate analogue exhibited significant antibacterial activity against Gram-positive bacteria including MRSA. Our studies demonstrate that siladenoserinols are a promising new class of bactericidal Gram-positive antibiotics without hemolytic activity.
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Affiliation(s)
| | - Jingyun Ren
- Department of Chemistry , The Hong Kong University of Science and Technology , Hong Kong , China
| | - Wenkang Ye
- Department of Ocean Science, Division of Life Science and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory , The Hong Kong University of Science and Technology , Hong Kong , China
| | - Peiyuan Qian
- Department of Ocean Science, Division of Life Science and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory , The Hong Kong University of Science and Technology , Hong Kong , China
| | - Rongbiao Tong
- Department of Chemistry , The Hong Kong University of Science and Technology , Hong Kong , China
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218
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Zeng M, Xu J, Luo Q, Hou C, Qiao S, Fu S, Fan X, Liu J. Constructing antibacterial polymer nanocapsules based on pyridine quaternary ammonium salt. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 108:110383. [PMID: 31923992 DOI: 10.1016/j.msec.2019.110383] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 07/22/2019] [Accepted: 10/29/2019] [Indexed: 12/19/2022]
Abstract
Excessive use of antibiotics accelerates the development and spread of drug-resistant strains, which is a huge challenge for the field of medical health worldwide. Quaternary ammonium salt polymers are considered to be membrane-active bactericidal groups with vast potential to control bacterial infections and inhibit drug resistance. Herein, we report on the creative synthesis and characterization of novel antimicrobial polymer nanocapsules based on pyridine quaternary ammonium salt. The antimicrobial polymer nanocapsules were formed by reaction of C3 symmetrical rigid monomer 2,4,6‑tris(4‑pyridyl)‑1,3,5‑triazine (TPT) and a flexible linker 1,2‑dibromoethane. The polymer nanocapsule was constructed as a cationic hollow sphere composed of a two-dimensional sheet whose main chain was formed by the pyridine quaternary ammonium salt, and a part of the bromide ion was adsorbed on the sphere. This hollow nanocapsule was characterized in detail by DLS, SEM, TEM, AFM, EDS and EA. When the cationic polymer nanocapsules are close to the Gram-negative Escherichia coli, the negatively charged phospholipid molecules in the bacterial membrane are attracted to the cationic surface and lead to rupture of cells. SEM confirmed the breakage of Escherichia coli membranes. The minimum inhibitory concentration was found to be 0.04 mg/mL, and the minimum bactericidal concentration was 0.1 mg/mL. Our experiments demonstrated that the adsorption of negatively charged phospholipid molecules on the surface of the pyridine quaternary ammonium salt polymer can kill Gram-negative bacteria without inserting quaternary ammonium salt hydrophobic groups into the cell membrane.
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Affiliation(s)
- Minghao Zeng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China
| | - Jiayun Xu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China
| | - Quan Luo
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China
| | - Chunxi Hou
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China
| | - Shanpeng Qiao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China
| | - Shuang Fu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China
| | - Xiaotong Fan
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China
| | - Junqiu Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China.
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219
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Rong F, Tang Y, Wang T, Feng T, Song J, Li P, Huang W. Nitric Oxide-Releasing Polymeric Materials for Antimicrobial Applications: A Review. Antioxidants (Basel) 2019; 8:E556. [PMID: 31731704 PMCID: PMC6912614 DOI: 10.3390/antiox8110556] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/07/2019] [Accepted: 11/13/2019] [Indexed: 12/12/2022] Open
Abstract
Polymeric materials releasing nitric oxide have attracted significant attention for therapeutic use in recent years. As one of the gaseous signaling agents in eukaryotic cells, endogenously generated nitric oxide (NO) is also capable of regulating the behavior of bacteria as well as biofilm formation in many metabolic pathways. To overcome the drawbacks caused by the radical nature of NO, synthetic or natural polymers bearing NO releasing moiety have been prepared as nano-sized materials, coatings, and hydrogels. To successfully design these materials, the amount of NO released within a certain duration, the targeted pathogens and the trigger mechanisms upon external stimulation with light, temperature, and chemicals should be taken into consideration. Meanwhile, NO donors like S-nitrosothiols (RSNOs) and N-diazeniumdiolates (NONOates) have been widely utilized for developing antimicrobial polymeric agents through polymer-NO donor conjugation or physical encapsulation. In addition, antimicrobial materials with visible light responsive NO donor are also reported as strong and physiological friendly tools for rapid bacterial clearance. This review highlights approaches to delivery NO from different types of polymeric materials for combating diseases caused by pathogenic bacteria, which hopefully can inspire researchers facing common challenges in the coming 'post-antibiotic' era.
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Affiliation(s)
- Fan Rong
- Xi’an Institute of Flexible Electronics & Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, Shaanxi, China
- Department of Applied Chemistry, School of Natural and Applied Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, Shaanxi, China
| | - Yizhang Tang
- Xi’an Institute of Flexible Electronics & Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, Shaanxi, China
- Department of Applied Chemistry, School of Natural and Applied Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, Shaanxi, China
| | - Tengjiao Wang
- Xi’an Institute of Flexible Electronics & Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, Shaanxi, China
| | - Tao Feng
- Xi’an Institute of Flexible Electronics & Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, Shaanxi, China
| | - Jiang Song
- Xi’an Institute of Flexible Electronics & Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, Shaanxi, China
- School of Electronics & Information, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, Shaanxi, China
| | - Peng Li
- Xi’an Institute of Flexible Electronics & Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, Shaanxi, China
| | - Wei Huang
- Xi’an Institute of Flexible Electronics & Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, Shaanxi, China
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220
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Fabrication of Robust Multifaceted Textiles by Application of Functionalized TiO2 Nanoparticles. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123799] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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221
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Kazemian MR, Wang L, Liu S. Engineering Rechargeable Antibacterial Coatings on Stainless Steel for Efficient Inactivation of Pathogenic Bacteria in the Presence of Organic Matter. ACS APPLIED BIO MATERIALS 2019; 2:5021-5031. [DOI: 10.1021/acsabm.9b00721] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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222
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Effects of Sterols on the Interaction of SDS, Benzalkonium Chloride, and A Novel Compound, Kor105, with Membranes. Biomolecules 2019; 9:biom9100627. [PMID: 31635312 PMCID: PMC6843611 DOI: 10.3390/biom9100627] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 10/11/2019] [Accepted: 10/15/2019] [Indexed: 02/06/2023] Open
Abstract
Sterols change the biophysical properties of lipid membranes. Here, we analyzed how sterols affect the activity of widely used antimicrobial membrane-active compounds, sodium dodecyl sulfate (SDS) and benzalkonium chloride (BAC). We also tested a novel benzalkonium-like substance, Kor105. Our data suggest that benzalkonium and Kor105 disturb the ordering of the membrane lipid packaging, and this disturbance is dampened by cholesterol. The disturbance induced by Kor105 is stronger than that induced by BAC because of the higher rigidity of the Kor105 molecule due to a shorter linker between the phenyl group and quaternary nitrogen. On the contrary, individual SDS molecules do not cause the disturbance. Thus, in the tested range of concentrations, SDS-membrane interaction is not influenced by cholesterol. To study how sterols influence the biological effects of these chemicals, we used yeast strains lacking Lam1-4 proteins. These proteins transport sterols from the plasma membrane into the endoplasmic reticulum. We found that the mutants are resistant to BAC and Kor105 but hypersensitive to SDS. Together, our findings show that sterols influence the interaction of SDS versus benzalkonium chloride and Kor105 with the membranes in a completely different manner.
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223
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Campa MF, Wolfe AK, Techtmann SM, Harik AM, Hazen TC. Unconventional Oil and Gas Energy Systems: An Unidentified Hotspot of Antimicrobial Resistance? Front Microbiol 2019; 10:2392. [PMID: 31681244 PMCID: PMC6813720 DOI: 10.3389/fmicb.2019.02392] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 10/02/2019] [Indexed: 11/17/2022] Open
Abstract
Biocides used in unconventional oil and gas (UOG) practices, such as hydraulic fracturing, control microbial growth. Unwanted microbial growth can cause gas souring, pipeline clogging, and microbial-induced corrosion of equipment and transportation pipes. However, optimizing biocide use has not been a priority. Moreover, biocide efficacy has been questioned because microbial surveys show an active microbial community in hydraulic fracturing produced and flowback water. Hydraulic fracturing produced and flowback water increases risks to surface aquifers and rivers/lakes near the UOG operations compared with conventional oil and gas operations. While some biocides and biocide degradation products have been highlighted as chemicals of concern because of their toxicity to humans and the environment, the selective antimicrobial pressure they cause has not been considered seriously. This perspective article aims to promote research to determine if antimicrobial pressure in these systems is cause for concern. UOG practices could potentially create antimicrobial resistance hotspots under-appreciated in the literature, practice, and regulation arena, hotspots that should not be ignored. The article is distinctive in discussing antimicrobial resistance risks associated with UOG biocides from a biological risk, not a chemical toxicology, perspective. We outline potential risks and highlight important knowledge gaps that need to be addressed to properly incorporate antimicrobial resistance emergence and selection into UOG environmental and health risk assessments.
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Affiliation(s)
- Maria Fernanda Campa
- Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Knoxville, TN, United States.,Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States.,Institute for a Secure and Sustainable Environment, University of Tennessee, Knoxville, TN, United States
| | - Amy K Wolfe
- Environmental Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - Stephen M Techtmann
- Department of Biological Sciences, Michigan Technological University, Houghton, MI, United States
| | - Ann-Marie Harik
- Departments of Civil and Environmental Engineering, Earth and Planetary Sciences, Microbiology, University of Tennessee, Knoxville, Knoxville, TN, United States
| | - Terry C Hazen
- Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Knoxville, TN, United States.,Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States.,Institute for a Secure and Sustainable Environment, University of Tennessee, Knoxville, TN, United States.,Departments of Civil and Environmental Engineering, Earth and Planetary Sciences, Microbiology, University of Tennessee, Knoxville, Knoxville, TN, United States
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224
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Suppressing Antibacterial Resistance: Chemical Binding of Monolayer Quaternary Ammonium Salts to Polymethyl Methacrylate in an Aqueous Solution and its Clinical Efficacy. Int J Mol Sci 2019; 20:ijms20194668. [PMID: 31547104 PMCID: PMC6801942 DOI: 10.3390/ijms20194668] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 09/17/2019] [Accepted: 09/19/2019] [Indexed: 12/04/2022] Open
Abstract
Antibacterial resistance (ABR) poses an enormous threat to human health. ABR mainly develops due to bacteria being constantly exposed to diluted levels of disinfectants. Here, we propose a method for suppressing ABR through the chemical binding of disinfectants to polymethyl methacrylate (PMMA) device surfaces in solutions of 5%, 10%, and 20% disinfectant concentrations. PMMA discs were fabricated from a commercial orthodontic acrylic resin system (Ortho-Jet) and quaternary ammonium salts (QAS), 3-(trimethoxysilyl)-propyldimethyloctadecyl ammonium chloride (42% in methanol), were used as the disinfectant. The PMMA surfaces were activated in 3 M sulfuric acid at 80 °C for 5 h for the esterification of hydrolyzed QAS to PMMA. Fourier transform infrared difference spectra confirmed that the carboxy-terminated PMMA was chemically bound to the QAS. In vitro cell viability tests using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assays revealed that 5%QAS-c-PMMA was more biocompatible than 10%QAS-c-PMMA and 20%QAS-c-PMMA. The results of antibacterial tests and clinical trials demonstrated the excellent antibacterial power of 5%QAS-c-PMMA. This method is the first solution-based approach to successfully avoid disinfectant leakage and subsequent ABR, as revealed by mass spectrometry studies of the solution obtained by agitating the disinfectant-bound PMMA for 28 days.
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225
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Wei SC, Chang L, Huang CC, Chang HT. Dual-functional gold nanoparticles with antimicrobial and proangiogenic activities improve the healing of multidrug-resistant bacteria-infected wounds in diabetic mice. Biomater Sci 2019; 7:4482-4490. [PMID: 31531425 DOI: 10.1039/c9bm00772e] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Gold nanoparticles (Au NPs) are conjugated with the vascular endothelial growth factor-A165 (VEGF-A165) and (11-mercaptoundecyl)-N,N,N-trimethylammonium (11-MTA) cation to form dual-functional gold nanoparticles (11-MTA/VEGF-Au NPs) that possess antimicrobial and proangiogenic activities for wound healing in diabetic (db/db) mice. VEGF-A165 is a popular proangiogenic growth factor that stimulates multiple components in the wound-healing cascade. On the other hand, 11-MTA possesses antibacterial activity and can be bound to Au NPs easily through Au-S bonding. We have found that the surface density of VEGF-A165 plays a vital role in promoting the proliferation, migration, and tube formation of human umbilical vein endothelial cells. 11-MTA tethered on the VEGF-modified Au NPs enables the nanocomposites (i.e., 11-MTA/VEGF-Au NPs) to exhibit a strong antimicrobial activity against multidrug-resistant bacteria [methicillin-resistant S. aureus (MRSA)]. The minimal inhibition concentration of 11-MTA/VEGF-Au NPs is ∼450-fold lower than that of 11-MTA, revealing their high antibacterial efficiency. 11-MTA/VEGF-Au NPs exhibit high biocompatibility. 11-MTA/VEGF-Au NPs as dressing materials to treat MRSA-infected wounds in diabetic mice not only show strong in vivo bactericidal activities but also enhance the healing process of the formation of collagen fibers and epithelialization. Our results show that dual-functional 11-MTA/VEGF-Au NPs are promising agents for clinical applications like treating chronic wound infections.
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Affiliation(s)
- Shih-Chun Wei
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.
| | - Lung Chang
- Department of Pediatrics, Mackay Memorial Hospital and Mackay Junior College of Medicine, Nursing and Management, Taipei, 10449, Taiwan
| | - Chih-Ching Huang
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan. and Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, 20224, Taiwan and School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Huan-Tsung Chang
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan. and Department of Chemistry, Chung Yuan Christian University, Taoyuan City 32023, Taiwan
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226
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Morrison KR, Allen RA, Minbiole KP, Wuest WM. More QACs, more questions: Recent advances in structure activity relationships and hurdles in understanding resistance mechanisms. Tetrahedron Lett 2019; 60:150935. [PMID: 32296251 PMCID: PMC7158862 DOI: 10.1016/j.tetlet.2019.07.026] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Quaternary ammonium compounds (QACs) are a class of antimicrobials that have been around for over a century; nevertheless, they have found continued renewal in the structures to which they can be appended. Ranging from antimicrobial polymers to adding novel modes of action to existing antibiotics, QACs have found ongoing use due to their potent properties. However, resistance against QACs has begun to emerge, and the mechanism of resistance is still only partially understood. In this review, we aim to summarize the current state of the field and what is known about the mechanisms of resistance so that the QACs of the future can be designed to be evermore efficacious and utilized to unearth the remaining mysteries that surround bacteria's resistance to them.
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Affiliation(s)
- Kelly R. Morrison
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, United States
| | - Ryan A. Allen
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, United States
| | - Kevin P.C. Minbiole
- Department of Chemistry, Villanova University, 800 E. Lancaster Ave, Villanova, PA 19085, United States
| | - William M. Wuest
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, United States
- Antibiotic Resistance Center, Emory University School of Medicine 201 Dowman Drive, Atlanta, GA 30322, United States
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227
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Vereshchagin AN, Frolov NA, Konyuhova VY, Hansford KA, Egorov MP. Synthesis and microbiological properties of novel bis-quaternary ammonium compounds based on 4,4′-oxydiphenol spacer. MENDELEEV COMMUNICATIONS 2019. [DOI: 10.1016/j.mencom.2019.09.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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228
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Kalelkar PP, Geng Z, Finn MG, Collard DM. Azide-Substituted Polylactide: A Biodegradable Substrate for Antimicrobial Materials via Click Chemistry Attachment of Quaternary Ammonium Groups. Biomacromolecules 2019; 20:3366-3374. [DOI: 10.1021/acs.biomac.9b00504] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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229
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Song X, Vossebein L, Zille A. Efficacy of disinfectant-impregnated wipes used for surface disinfection in hospitals: a review. Antimicrob Resist Infect Control 2019; 8:139. [PMID: 31452873 PMCID: PMC6701098 DOI: 10.1186/s13756-019-0595-2] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 08/12/2019] [Indexed: 12/21/2022] Open
Abstract
Background "Ready-to-use" disinfecting wipes (also known as pre-impregnated disinfecting wipe) are broadly used in food industry and domestic situations. Their application in hospitals and healthcare centres for decontamination of medical devices and surfaces is steadily increasing because of their convenient implementation in practice and reliable performance. Beside their acceptable compliance and easy application, literature reported the disinfection failure due to the interaction between textile substrate and active ingredients, which can highly increase the risk of an infection outbreak. This review aims to call attention to the wide range of variables affecting the disinfectant-impregnated wipes' (DIWs) disinfection performances in hospitals. Methods A systematic literature search based on the five categories i. wipes, ii. disinfectants, iii. Application methods, iv. interaction between wipes and active ingredients and v. wiping strategy which can possibly influence the disinfection effectiveness of DIWs was conducted by Google scholar. Studies regarding the efficacy evaluation of DIWs in clinical applications were also reviewed from the National Centre for Biotechnology Information database. Results Variables that impact on the disinfection performance of disinfectant-impregnated wipes in surface disinfection in hospitals were summarised and critically discussed. In addition to the information, current disinfectant-impregnated wipes' decontamination efficacy test standards were reviewed, and different standards exposed some disadvantage in their testing design. Conclusion Various parameters contribute to the impact of DIWs disinfection performance in practice. The interaction between disinfectant active ingredients and the wiping materials barricades their broad application in hospitals. More studies of the DIWs' disinfection efficacy in clinical practice are in need. Current standards evaluating the DIWs' efficacy are required to improve for more realistic condition simulation and differentiating between mechanical removal of inoculum from a surface and chemical inactivation of the test microbe.
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Affiliation(s)
- Xinyu Song
- 2C2T – Centro de Ciência e Tecnologia Têxtil, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - Lutz Vossebein
- Faculty of Textile and Clothing Technology, Niederrhein University of Applied Sciences, Webschulstrasse 31, 41065 Mönchengladbach, Germany
| | - Andrea Zille
- 2C2T – Centro de Ciência e Tecnologia Têxtil, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
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230
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Shatan AB, Venclíková K, Zasońska BA, Patsula V, Pop-Georgievski O, Petrovský E, Horák D. Antibacterial Silver-Conjugated Magnetic Nanoparticles: Design, Synthesis and Bactericidal Effect. Pharm Res 2019; 36:147. [DOI: 10.1007/s11095-019-2680-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 08/02/2019] [Indexed: 12/13/2022]
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231
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A SO2F2 mediated mild, practical, and gram-scale dehydroxylative transforming primary alcohols to quaternary ammonium salts. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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232
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Feng X, Imran Q, Zhang Y, Sixdenier L, Lu X, Kaufman G, Gabinet U, Kawabata K, Elimelech M, Osuji CO. Precise nanofiltration in a fouling-resistant self-assembled membrane with water-continuous transport pathways. SCIENCE ADVANCES 2019; 5:eaav9308. [PMID: 31448326 PMCID: PMC6688870 DOI: 10.1126/sciadv.aav9308] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 06/28/2019] [Indexed: 05/17/2023]
Abstract
Self-assembled materials are attractive for next-generation membranes. However, the need to align self-assembled nanostructures (e.g. cylinders, lamellae) and the narrow stability windows for ordered bicontinuous systems present serious challenges. We propose and demonstrate a novel approach that circumvents these challenges by exploiting size-selective transport in the water-continuous medium of a nanostructured polymer templated from a self-assembled lyotropic H1 mesophase. Optimization of the mesophase composition enables high-fidelity retention of the H1 structure on photoinduced cross-linking. The resulting material is a mechanically robust nanostructured polymer possessing internally and externally cross-linked nanofibrils surrounded by a continuous aqueous medium. Fabricated membranes show size selectivity at the 1- to 2-nm length scale and water permeabilities of ~10 liters m-2 hour-1 bar-1 μm. Moreover, the membranes display excellent antimicrobial properties due to the quaternary ammonium groups on the nanofibril surfaces. These results represent a breakthrough for the potential use of polymerized lyotropic mesophase membranes in practical water purification applications.
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Affiliation(s)
- Xunda Feng
- Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USA
| | - Qaboos Imran
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USA
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yizhou Zhang
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | | | - Xinglin Lu
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USA
| | - Gilad Kaufman
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USA
| | - Uri Gabinet
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USA
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Kohsuke Kawabata
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki, Aoba-Ku, Sendai, Japan
| | - Menachem Elimelech
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USA
| | - Chinedum O. Osuji
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06511, USA
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
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233
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Tăbăcaru A, Botezatu AVD, Horincar G, Furdui B, Dinică RM. Green Accelerated Synthesis, Antimicrobial Activity and Seed Germination Test of Quaternary Ammonium Salts of 1,2-bis(4-pyridyl)ethane. Molecules 2019; 24:molecules24132424. [PMID: 31266261 PMCID: PMC6651484 DOI: 10.3390/molecules24132424] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 06/27/2019] [Accepted: 06/29/2019] [Indexed: 12/21/2022] Open
Abstract
A family of fifteen quaternary ammonium salts (QAs), bearing the 1,2-bis(4-pyridyl)ethane core, were obtained using for the first time two different green methods, such as microwave (MW) and ultrasounds (US) irradiation, with very good yields and in much shorter times compared to the classical method, and an assay on their antimicrobial action against Escherichia coli (E. coli) was carried out. While 12 to 24 hours were required for complete alkylation of 1,2-bis(4-pyridyl)ethane by reactive halogenated derivatives in anhydrous solvent under reflux conditions, MW and US irradiation reduced the reaction time and the desired products were achieved in a few min. One of the aims of this study was to evaluate the antibacterial potential of the synthesized QAs against pathogenic bacteria, along with their impact on germination activity of wheat seeds (Triticum aestivum L.). The antibacterial activity of the QAs against Escherichia coli was explored by determining the minimum inhibitory concentration (MIC). The MIC values varied from 0.312 to 2.5 mg/mL, highlighting the lowest values attained for the derivatives containing methoxy, chlorine and benzofurane functional groups. The viability of aerobic bacteria was determined with the Tetrazolium/Formazan Test, a method that was found to be the best alternative approach with respect to the difuzimetric method. Seeds of Triticum aestivum L. were used for the evaluation of the germination indicators, such as seed germination (SG), the relative seed germination (RSG), the relative radicle growth (RRG), and the seed germination index (GI). The toxicity studies of QAs 1, 4 and 7, at two different concentrations, showed no inhibitory effect on seed germination.
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Affiliation(s)
- Aurel Tăbăcaru
- Faculty of Sciences and Environment, Department of Chemistry, Physics and Environment, "Dunarea de Jos" University of Galati, 111 Domneasca Street, 800201 Galati, Romania
| | - Andreea Veronica Dediu Botezatu
- Faculty of Sciences and Environment, Department of Chemistry, Physics and Environment, "Dunarea de Jos" University of Galati, 111 Domneasca Street, 800201 Galati, Romania
| | - Georgiana Horincar
- Faculty of Food Science and Engineering, Department of Food Science, Food Engineering and Applied Biotechnology, "Dunarea de Jos" University of Galati, 111 Domneasca Street, 800201 Galati, Romania
| | - Bianca Furdui
- Faculty of Sciences and Environment, Department of Chemistry, Physics and Environment, "Dunarea de Jos" University of Galati, 111 Domneasca Street, 800201 Galati, Romania.
| | - Rodica Mihaela Dinică
- Faculty of Sciences and Environment, Department of Chemistry, Physics and Environment, "Dunarea de Jos" University of Galati, 111 Domneasca Street, 800201 Galati, Romania.
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234
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Hu J, Ben Maamar S, Glawe AJ, Gottel N, Gilbert JA, Hartmann EM. Impacts of indoor surface finishes on bacterial viability. INDOOR AIR 2019; 29:551-562. [PMID: 30980566 PMCID: PMC6851865 DOI: 10.1111/ina.12558] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 04/08/2019] [Accepted: 04/09/2019] [Indexed: 05/21/2023]
Abstract
Microbes in indoor environments are constantly being exposed to antimicrobial surface finishes. Many are rendered non-viable after spending extended periods of time under low-moisture, low-nutrient surface conditions, regardless of whether those surfaces have been amended with antimicrobial chemicals. However, some microorganisms remain viable even after prolonged exposure to these hostile conditions. Work with specific model pathogens makes it difficult to draw general conclusions about how chemical and physical properties of surfaces affect microbes. Here, we explore the survival of a synthetic community of non-model microorganisms isolated from built environments following exposure to three chemically and physically distinct surface finishes. Our findings demonstrated the differences in bacterial survival associated with three chemically and physically distinct materials. Alkaline clay surfaces select for an alkaliphilic bacterium, Kocuria rosea, whereas acidic mold-resistant paint favors Bacillus timonensis, a Gram-negative spore-forming bacterium that also survives on antimicrobial surfaces after 24 hours of exposure. Additionally, antibiotic-resistant Pantoea allii did not exhibit prolonged retention on antimicrobial surfaces. Our controlled microcosm experiment integrates measurement of indoor chemistry and microbiology to elucidate the complex biochemical interactions that influence the indoor microbiome.
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Affiliation(s)
- Jinglin Hu
- Department of Civil and Environmental EngineeringNorthwestern UniversityEvanstonIllinois
| | - Sarah Ben Maamar
- Department of Civil and Environmental EngineeringNorthwestern UniversityEvanstonIllinois
| | - Adam J. Glawe
- Department of Civil and Environmental EngineeringNorthwestern UniversityEvanstonIllinois
| | - Neil Gottel
- Department of SurgeryThe University of ChicagoChicagoIllinois
| | - Jack A. Gilbert
- Department of SurgeryThe University of ChicagoChicagoIllinois
| | - Erica M. Hartmann
- Department of Civil and Environmental EngineeringNorthwestern UniversityEvanstonIllinois
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235
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Synthesis, surface properties and antimicrobial performance of novel gemini pyridinium surfactants. Colloids Surf B Biointerfaces 2019; 181:814-821. [PMID: 31247406 DOI: 10.1016/j.colsurfb.2019.06.028] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/07/2019] [Accepted: 06/13/2019] [Indexed: 11/20/2022]
Abstract
A series of novel gemini pyridinium surfactants with different alkyl chains were synthesized and characterized. The surface properties and aggregation behavior of the gemini surfactants in solution were studied. The gemini pyridinium salts exhibit higher surface activity than quaternary ammonium salts and can form vesicles above critical micellization concentration (CMC). The antimicrobial performance of these surfactants against E. coli was investigated and compared with those of quaternary ammonium salts. Alkyl chain length has a significant effect on the antimicrobial activity of the gemini surfactants, and the surfactant with decyl group showed more effective antimicrobial activity than quaternary ammonium salts. The high cationic charge density on the polar head group and the strong adsorption tendency confer relatively high antimicrobial of the gemini surfactants.
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236
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Perinelli DR, Petrelli D, Vitali LA, Bonacucina G, Cespi M, Vllasaliu D, Giorgioni G, Palmieri GF. Quaternary Ammonium Leucine-Based Surfactants: The Effect of a Benzyl Group on Physicochemical Properties and Antimicrobial Activity. Pharmaceutics 2019; 11:pharmaceutics11060287. [PMID: 31248093 PMCID: PMC6631462 DOI: 10.3390/pharmaceutics11060287] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/06/2019] [Accepted: 06/15/2019] [Indexed: 12/21/2022] Open
Abstract
Quaternary ammonium amphiphiles are a class of compounds with a wide range of commercial and industrial uses. In the pharmaceutical field, the most common quaternary ammonium surfactant is benzalkonium chloride (BAC), which is employed as a preservative in several topical formulations for ocular, skin, or nasal application. Despite the broad antimicrobial activity against Gram-positive and Gram-negative bacteria, as well as fungi and small enveloped viruses, safety concerns regarding its irritant and cytotoxic effect on epithelial cells still remain. In this work, quaternary ammonium derivatives of leucine esters (C10, C12 and C14) were synthesised as BAC analogues. These cationic surfactants were characterised in terms of critical micelle concentration (CMC, by tensiometry), cytotoxicity (MTS and LDH assays on the Caco-2 and Calu-3 cell lines) and antimicrobial activity on the bacterial species Staphylococcus aureus and Enterococcus faecalis among the Gram-positives, Escherichia coli and Pseudomonas aeruginosa among the Gram-negatives and the yeast Candida albicans. They showed satisfactory surface-active properties, and a cytotoxic effect that was dependent on the length of the hydrophobic chain. Lower minimum inhibiting concentration (MIC) values were calculated for C14-derivatives, which were comparable to those calculated for BAC toward Gram-positive bacteria and slightly higher for Gram-negative bacteria and C. albicans. Thus, the synthesised leucine-based quaternary ammonium cationic surfactants can potentially find application as promising surface-active compounds with antimicrobial activity.
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Affiliation(s)
| | - Dezemona Petrelli
- School of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, Italy.
| | | | | | - Marco Cespi
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy.
| | - Driton Vllasaliu
- School of Cancer and Pharmaceutical Sciences, Faculty of Life Sciences and Medicine, King's College London, London SE1 9NH, UK.
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237
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Vereshchagin AN, Gordeeva AM, Frolov NA, Proshin PI, Hansford KA, Egorov MP. Synthesis and Microbiological Properties of Novel Bis-Quaternary Ammonium Compounds Based on Biphenyl Spacer. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900319] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Anatoly N. Vereshchagin
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Procpekt 119991 Moscow Russia
| | - Alexandra M. Gordeeva
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Procpekt 119991 Moscow Russia
- Higher Chemical College of Russian Academy of Sciences; D. I. Mendeleev University of Chemical Technology of Russia; Miusskaya square 9 125047 Moscow Russia
| | - Nikita A. Frolov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Procpekt 119991 Moscow Russia
| | - Pavel I. Proshin
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Procpekt 119991 Moscow Russia
- Higher Chemical College of Russian Academy of Sciences; D. I. Mendeleev University of Chemical Technology of Russia; Miusskaya square 9 125047 Moscow Russia
| | - Karl A. Hansford
- Hansford Institute for Molecular Bioscience; The University of Queensland; 4072 Brisbane Queensland Australia
| | - Mikhail P. Egorov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Procpekt 119991 Moscow Russia
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238
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Perinelli DR, Petrelli D, Vitali LA, Vllasaliu D, Cespi M, Giorgioni G, Elmowafy E, Bonacucina G, Palmieri GF. Quaternary ammonium surfactants derived from leucine and methionine: Novel challenging surface active molecules with antimicrobial activity. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.03.083] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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239
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Galiano F, Mancuso R, Guzzo MG, Lucente F, Gukelberger E, Losso MA, Figoli A, Hoinkis J, Gabriele B. New Polymeric Films with Antibacterial Activity Obtained by UV-induced Copolymerization of Acryloyloxyalkyltriethylammonium Salts with 2-Hydroethyl Methacrylate. Int J Mol Sci 2019; 20:E2696. [PMID: 31159299 PMCID: PMC6600214 DOI: 10.3390/ijms20112696] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 05/29/2019] [Accepted: 05/30/2019] [Indexed: 11/16/2022] Open
Abstract
New polymeric films with antibacterial activity have been prepared, by simple UV-induced copolymerization of readily available ω-(acryloyloxy)-N,N,N-triethylalcan-1-aminium bromides (or acryloyloxyalkyltriethylammonium bromides, AATEABs) with commercially available 2-hydroethyl methacrylate (HEMA), at different relative amounts. In particular, the antibacterial activity of polymeric films derived from 11-(acryloyloxy)-N,N,N-triethylundecan-1-aminium bromide (or acryloyloxyundecyltriethylammonium bromide, AUTEAB; bearing a C-11 alkyl chain linker between the acrylate polymerization function and the quaternary ammonium moiety) and 12-(acryloyloxy)-N,N,N-triethyldodecan-1-aminium bromide (or acryloyldodecyltriethylammonium bromide, ADTEB, bearing a C-12 alkyl chain linker) has been assessed against Gram-negative Escherichia Coli and Gram-positive Staphylococcus aureus cells. The results obtained have shown a clear concentration-dependent activity against both bacterial strains, the films obtained from homopolymerization of pure AUTEAB and ADTEAB being the most effective. Moreover, ADTEAB-based films showed a higher antibacterial activity with respect to the AUTEAB-based ones. Interestingly, however, both types of films presented a significant activity not only toward Gram-positive S. aureus, but also toward Gram-negative E. Coli cells.
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Affiliation(s)
- Francesco Galiano
- Institute on Membrane Technologies (ITM-CNR), Via Pietro Bucci 17/C, 87036 Arcavacata di Rende (CS), Italy.
| | - Raffaella Mancuso
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Arcavacata di Rende (CS), Italy.
| | - Maria Grazia Guzzo
- Department of Biology, Ecology, and Earth Sciences (DiBEST), University of Calabria, 87036 Arcavacata di Rende (CS), Italy.
| | - Fabrizio Lucente
- Department of Biology, Ecology, and Earth Sciences (DiBEST), University of Calabria, 87036 Arcavacata di Rende (CS), Italy.
| | - Ephraim Gukelberger
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Arcavacata di Rende (CS), Italy.
- University of Applied Sciences Karlsruhe, Center of Applied Research (CAR), Moltkestraße 30, 76133 Karlsruhe, Germany.
| | - Maria Adele Losso
- Department of Biology, Ecology, and Earth Sciences (DiBEST), University of Calabria, 87036 Arcavacata di Rende (CS), Italy.
| | - Alberto Figoli
- Institute on Membrane Technologies (ITM-CNR), Via Pietro Bucci 17/C, 87036 Arcavacata di Rende (CS), Italy.
| | - Jan Hoinkis
- University of Applied Sciences Karlsruhe, Center of Applied Research (CAR), Moltkestraße 30, 76133 Karlsruhe, Germany.
| | - Bartolo Gabriele
- Laboratory of Industrial and Synthetic Organic Chemistry (LISOC), Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Arcavacata di Rende (CS), Italy.
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240
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Bogdanov AV, Zaripova IF, Voloshina AD, Sapunova AS, Kulik NV, Bukharov SV, Voronina JK, Vandyukov AE, Mironov VF. Synthesis and Biological Evaluation of New Isatin‐Based QACs with High Antimicrobial Potency. ChemistrySelect 2019. [DOI: 10.1002/slct.201901708] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Andrei V. Bogdanov
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Ilyuza F. Zaripova
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Alexandra D. Voloshina
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Anastasia S. Sapunova
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Natalia V. Kulik
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Sergey V. Bukharov
- Kazan National Research Technological University Kazan 420015 Russian Federation
| | - Julia K. Voronina
- N. S. Kurnakov Institute of General and Inorganic Chemistry, RAS, 31 Leninsky Av. Moscow 119991 Russian Federation
| | - Alexander E. Vandyukov
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Vladimir F. Mironov
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
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241
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John CN, Abrantes PMDS, Prusty BK, Ablashi DV, Africa CWJ. K21 Compound, a Potent Antifungal Agent: Implications for the Treatment of Fluconazole-Resistant HIV-Associated Candida Species. Front Microbiol 2019; 10:1021. [PMID: 31231313 PMCID: PMC6558409 DOI: 10.3389/fmicb.2019.01021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 04/24/2019] [Indexed: 11/13/2022] Open
Abstract
Background/Objectives: With mucocutaneous candidiasis being highly prevalent in HIV patients, the emergence of fluconazole-resistant Candida species forms a major challenge in treating and eradicating these infections. The objective of this study was to establish the antifungal activity of K21, a membrane-rupturing antimicrobial compound derived from a silica quaternary ammonium compound (SiQAC) with tetraethoxysilane (TEOS). Methods: The study sample included 81 Candida species of which 9 were type strains and 72 were clinical isolates. Minimum inhibitory concentrations, synergy, fractional inhibitory concentration index (FICI), and time kill assays were determined by broth microdilution. Electron microscopy (EM) was used to determine the qualitative changes brought about after treatment with K21. Results: K21 inhibited the growth of all fluconazole-resistant and susceptible Candida strains with only 2 h of exposure required to effectively kill 99.9% of the inoculum, and a definite synergistic effect was observed with a combination of K21 and fluconazole. EM demonstrated the presence of two forms of extracellular vesicles indicative of biofilm formation and cell lysis. Conclusion: The study established the efficacy of K21 as an antifungal agent and with fluconazole-resistant candidiasis on the increase, the development of K21 can provide a promising alternative to combat acquired drug resistance.
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Affiliation(s)
- Cathy N. John
- Maternal Endogenous Infections Studies (MEnIS) Research Laboratories, Department of Medical Biosciences, University of the Western Cape, Bellville, South Africa
| | - Pedro M. D. S. Abrantes
- Maternal Endogenous Infections Studies (MEnIS) Research Laboratories, Department of Medical Biosciences, University of the Western Cape, Bellville, South Africa
| | - Bhupesh K. Prusty
- Institute for Virology and Immunobiology, University of Wuerzburg, Wuerzburg, Germany
| | | | - Charlene W. J. Africa
- Maternal Endogenous Infections Studies (MEnIS) Research Laboratories, Department of Medical Biosciences, University of the Western Cape, Bellville, South Africa
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242
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Sakai T, Noda N, Fujimoto C, Ito M, Takeuchi H, Nishiwaki M, Mori Y. Ion-Pair Extraction of Quaternary Ammoniums Using Tetracyanocyclopentadienides and Synthetic Application for Complex Ammoniums. Org Lett 2019; 21:3081-3085. [PMID: 30978029 DOI: 10.1021/acs.orglett.9b00686] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple isolation method for quaternary ammonium cations via ion-pair extraction using tetracyanocyclopentadienide (TCCP) was established. Separation of tetraethylammonium and carbachol cations was achieved by the selective extraction of tetraethylammonium with ethoxycarbonyl TCCP, which was moderately lipophilic. The ion-pair extraction with TCCPs was applied to the synthesis of complex quaternary ammonium salts, including a spiro vinylammonium that is a precursor of the novel 3-aza-Cope-Mannich cascade.
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Affiliation(s)
- Takeo Sakai
- Faculty of Pharmacy , Meijo University , 150 Yagotoyama , Tempaku-ku, Nagoya 468-8503 , Japan
| | - Naotaka Noda
- Faculty of Pharmacy , Meijo University , 150 Yagotoyama , Tempaku-ku, Nagoya 468-8503 , Japan
| | - Chisato Fujimoto
- Faculty of Pharmacy , Meijo University , 150 Yagotoyama , Tempaku-ku, Nagoya 468-8503 , Japan
| | - Miho Ito
- Faculty of Pharmacy , Meijo University , 150 Yagotoyama , Tempaku-ku, Nagoya 468-8503 , Japan
| | - Harumi Takeuchi
- Faculty of Pharmacy , Meijo University , 150 Yagotoyama , Tempaku-ku, Nagoya 468-8503 , Japan
| | - Moeri Nishiwaki
- Faculty of Pharmacy , Meijo University , 150 Yagotoyama , Tempaku-ku, Nagoya 468-8503 , Japan
| | - Yuji Mori
- Faculty of Pharmacy , Meijo University , 150 Yagotoyama , Tempaku-ku, Nagoya 468-8503 , Japan
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243
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Hossain S, De Silva BCJ, Wickramanayake MVKS, Dahanayake PS, Wimalasena SHMP, Heo GJ. Incidence of antimicrobial resistance genes and class 1 integron gene cassettes in multidrug-resistant motile Aeromonas sp. isolated from ornamental guppy (Poecilia reticulata). Lett Appl Microbiol 2019; 69:2-10. [PMID: 30980564 DOI: 10.1111/lam.13162] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 04/09/2019] [Accepted: 04/09/2019] [Indexed: 11/29/2022]
Abstract
Aeromonas sp. are opportunistic pathogenic bacteria which are associated with various diseases in ornamental fish, aquaculture raised species and wild fisheries. In our study, antimicrobial resistance patterns, antimicrobial resistance genes and class 1 integron gene cassettes of 52 guppy-borne Aeromonas sp. were examined. The isolates were identified as A. veronii (n = 34), A. dhakensis (n = 10), A. hydrophila (n = 3), A. caviae (n = 3) and A. enteropelogenes (n = 2) by gyrB gene sequencing. Every isolate was resistant to at least four antimicrobials in disc diffusion test. The resistance to amoxicillin, nalidixic acid and oxytetracycline was 100% among the tested isolates. 92·30, 76·92, 71·15, 51·92, 51·92 and 50·00% of the isolates were resistant to ampicillin, rifampicin, imipenem, cephalothin, tetracycline and trimethoprim respectively. The multiple antibiotic resistance index values ranged from 0·28 to 0·67. PCR amplification of antimicrobial resistance genes implied the occurrence of tetracycline resistance (tetA (65·39%), tetE (25·00%) and tetB (15·38%)), plasmid-mediated quinolone resistance (qnrS (26·92%) and qnrB (17·31%)) and aminoglycoside resistance (aphaAI-IAB (7·69%) and aac (6')-Ib (3·84%)) genes in the isolates. The IntI gene was positive for 36·54% of the isolates and four class 1 integron gene cassette profiles (aadA2, qacE2-orfD, aadA2-catB2 and dfrA12-aadA2) were identified. These data suggest that ornamental guppy can be a reservoir of multidrug-resistant Aeromonas sp. which comprise different antimicrobial resistance genes and class 1 integrons. SIGNIFICANCE AND IMPACT OF THE STUDY: Antimicrobial resistance genes and integron gene cassettes of ornamental fish-borne aeromonads are poorly studied. The antimicrobial resistance patterns, antimicrobial resistance genes and class 1 integron gene cassettes of Aeromonas sp. isolated from ornamental guppy were characterized for the first time in Korea. The incidence of different antimicrobial resistance genes and class 1 integron gene cassettes were observed in multidrug-resistant Aeromonas isolates. This result suggests that better management practices are necessary to prevent and address the serious consequences of indiscriminate and inappropriate antimicrobial use, and the distribution of multidrug-resistant bacteria.
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Affiliation(s)
- S Hossain
- Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - B C J De Silva
- Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - M V K S Wickramanayake
- Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - P S Dahanayake
- Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - S H M P Wimalasena
- Bio-Safety Research Institute and College of Veterinary Medicine, Chonbuk National University, Jeonju, Korea
| | - G-J Heo
- Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
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244
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Vasilieva EA, Lukashenko SS, Vasileva LA, Pavlov RV, Gaynanova GA, Zakharova LY. Aggregation behavior of the surfactant bearing pyrrolidinium head group in the presence of polyacrylic acid. Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2390-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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245
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Hossain S, Dahanayake P, De Silva B, Wickramanayake M, Wimalasena S, Heo G. Multidrug resistantAeromonasspp. isolated from zebrafish (Danio rerio): antibiogram, antimicrobial resistance genes and class 1 integron gene cassettes. Lett Appl Microbiol 2019; 68:370-377. [DOI: 10.1111/lam.13138] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 02/14/2019] [Accepted: 02/15/2019] [Indexed: 12/13/2022]
Affiliation(s)
- S. Hossain
- Veterinary Medical Center and College of Veterinary Medicine Chungbuk National University Cheongju Korea
| | - P.S. Dahanayake
- Veterinary Medical Center and College of Veterinary Medicine Chungbuk National University Cheongju Korea
| | - B.C.J. De Silva
- Veterinary Medical Center and College of Veterinary Medicine Chungbuk National University Cheongju Korea
| | - M.V.K.S. Wickramanayake
- Veterinary Medical Center and College of Veterinary Medicine Chungbuk National University Cheongju Korea
| | - S.H.M.P. Wimalasena
- Bio‐Safety Research Institute and College of Veterinary Medicine Chonbuk National University Jeonju Korea
| | - G.‐J. Heo
- Veterinary Medical Center and College of Veterinary Medicine Chungbuk National University Cheongju Korea
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246
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Talukdar K, Roy S, Bag R, Punniyamurthy T. Rh-Catalyzed tandem C-C/C-N bond formation of quinoxalines with alkynes leading to heterocyclic ammonium salts. Org Biomol Chem 2019; 17:2148-2152. [PMID: 30702737 DOI: 10.1039/c8ob03103g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient Rh-catalyzed oxidative C-H activation/annulation of 2-arylquinoxalines with internal alkynes is described using Cu(OAc)2·H2O and AgBF4 to afford a diverse variety of substituted quarternary ammonium salts at room temperature. The mechanism of the protocol is established on the basis of isolation of the 5-membered rhodacycle intermediate and kinetic isotope studies. The mild reaction conditions, substrate scope and functional group diversity are the salient practical features.
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Affiliation(s)
- Kangkan Talukdar
- Department of Chemistry, Indian Institute of Technology, Guwahati, Guwahati 781039, India.
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247
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Abdali Z, Logsetty S, Liu S. Bacteria-Responsive Single and Core-Shell Nanofibrous Membranes Based on Polycaprolactone/Poly(ethylene succinate) for On-Demand Release of Biocides. ACS OMEGA 2019; 4:4063-4070. [PMID: 31459615 PMCID: PMC6647954 DOI: 10.1021/acsomega.8b03137] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 02/11/2019] [Indexed: 06/10/2023]
Abstract
Traditional antibacterial dressings continuously elute biocides, even if there are no bacteria. This unneeded release can cause cytotoxicity, increase costs, and delay healing. We designed a bacteria-responsive nanofibrous wound dressing, which can be degraded in the presence of bacteria to release antimicrobial agents. A model biocide, benzyl dimethyl tetradecyl ammonium chloride (BTAC), was incorporated into bacteria-degradable polymers [polycaprolactone and poly(ethylene succinate)] in two ways: evenly distributed inside the polymers as single nanofibers and encapsulated in a core surrounded by the same polymers as core-shell nanofibers. Because of bacterial activity (both lipase secretion and acidic pH), degradation of the fibers was facilitated and caused the release of incorporated BTAC. BTAC-loaded single and core-shell nanofibers presented >1 log reduction of both Staphylococcus aureus and Escherichia coli within 2 h. Additionally, the core-shell structure provided a more controlled release of BTAC with prolonged antibacterial properties than single nanofibers. The core-shell nanofibers also exhibited minimal cytotoxicity against human fibroblast cells (>80% viable cells after 24 h contact). These nanofibrous mats have the potential to selectively release antibacterial agents to prevent wound infections without delaying wound healing.
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Affiliation(s)
- Zahra Abdali
- Biomedical
Engineering, Faculty of Engineering, Director of Manitoba Firefighters
Burn Unit, Professor in the Departments of Surgery and Psychiatry,
Rady Faculty of Health Sciences, Department of Biosystems Engineering, and Department of
Medical Microbiology, University of Manitoba, Winnipeg R3T 2N2, Canada
| | - Sarvesh Logsetty
- Biomedical
Engineering, Faculty of Engineering, Director of Manitoba Firefighters
Burn Unit, Professor in the Departments of Surgery and Psychiatry,
Rady Faculty of Health Sciences, Department of Biosystems Engineering, and Department of
Medical Microbiology, University of Manitoba, Winnipeg R3T 2N2, Canada
| | - Song Liu
- Biomedical
Engineering, Faculty of Engineering, Director of Manitoba Firefighters
Burn Unit, Professor in the Departments of Surgery and Psychiatry,
Rady Faculty of Health Sciences, Department of Biosystems Engineering, and Department of
Medical Microbiology, University of Manitoba, Winnipeg R3T 2N2, Canada
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248
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Liu F, He D, Yu Y, Cheng L, Zhang S. Quaternary Ammonium Salt-Based Cross-Linked Micelles to Combat Biofilm. Bioconjug Chem 2019; 30:541-546. [PMID: 30726061 DOI: 10.1021/acs.bioconjchem.9b00010] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Due to self-produced extracellular polymeric substances (EPS), biofilms are hard to eradicate by common antimicrobials. Herein, a new quaternary ammonium salt based cross-linked micelle (QAS@CM) was created to combat biofilms. The QAS@CM adsorbed first onto the biofilm surface through multicharged interaction, then penetrated the EPS in the form of nanoparticles and diffused throughout the films. By responding to the biofilm acid/lipase microenvironment, these nanoparticles would further break into quaternary ammonium oligomers and act as the polyvalent inhibitors to effectively destroy the established biofilm and kill the corresponding bacteria within it.
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Affiliation(s)
- Fangqin Liu
- National Engineering Research Center for Biomaterials, and College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , China
| | - Dengfeng He
- National Engineering Research Center for Biomaterials, and College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , China
| | - Yunlong Yu
- National Engineering Research Center for Biomaterials, and College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , China
| | - Lei Cheng
- State Key Laboratory of Oral Diseases , Sichuan University , Chengdu 610041 , China
| | - Shiyong Zhang
- National Engineering Research Center for Biomaterials, and College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , China
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249
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Bazina L, Maravić A, Krce L, Soldo B, Odžak R, Popović VB, Aviani I, Primožič I, Šprung M. Discovery of novel quaternary ammonium compounds based on quinuclidine-3-ol as new potential antimicrobial candidates. Eur J Med Chem 2019; 163:626-635. [DOI: 10.1016/j.ejmech.2018.12.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/06/2018] [Accepted: 12/11/2018] [Indexed: 01/18/2023]
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250
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Homologous series of amphiphiles bearing imidazolium head group: Complexation with bovine serum albumin. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.082] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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