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Kuruca T, Akarsu E. Synthesis and antimicrobial activity testing of quaternary ammonium silane compounds. Bioorg Chem 2024; 151:107614. [PMID: 39002512 DOI: 10.1016/j.bioorg.2024.107614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 06/20/2024] [Accepted: 07/02/2024] [Indexed: 07/15/2024]
Abstract
With increasing health awareness of the pathogenic effects of disease-causing microorganisms, interest in and use (of medical textiles, disinfectants in medical devices, etc.) of antimicrobial substances have increased in various applications, such as medical textiles and disinfectants (alcohol-based and nonalcoholic), in medical devices There are several concerns with alcohol-based disinfectants, such as surface deformation of medical devices due to high alcohol content and damage to skin tissue caused by lipid and protein denaturation of cell membranes. Quaternary ammonium compounds (quats) were preferred because they have the potential to prepare water-based disinfectants. In this study, novel (3-chloropropyl)triethoxysilane (CPTMO) and (3-chloropropyl)triethoxysilane (CPTEO) based quaternary ammonium silane compounds (silane-quats) were developed using quats with carbon chain lengths of C12, C14, C16 and C18. Titration (ASTM D2074) was used to calculate the yield of the synthesis and the structures of the products were characterised by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (13C NMR, 1H NMR) and gas chromatography-mass spectrometry (GC-MS).The in vitro antimicrobial activity of the synthesized samples was evaluated against Gram-positive (Staphylococcus aureus (S. aureus), Enterococcus hirae (E. hirae)) and Gram-negative (Escherichia coli (E. coli), Pseudomonas aeruginosa (P. aeruginosa)) bacteria and fungi (Candida albicans (C. albicans), Aspergillus brasiliensis (A. brasiliensis)) using the minimum inhibitory concentration (MIC) test. According to MIC tests, the silane-quats with the highest antimicrobial effects were dimethylhexadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (SQ3), which had an MIC of < 16 μg/ml (ppm) against E. coli, S. aureus, E. hirae, C. albicans, and A. brasiliensis and 32 μg/ml against P. aeruginosa. The MIC test results also showed antimicrobial activity at least 2 times greater than that of the commercially available disinfectant benzalkonium chloride (BAC). Findings suggest that SQ3 (C16) holds promise as an effective medical disinfectant, presenting a novel approach to combating microbial infections in healthcare settings.
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Affiliation(s)
- Tuğçe Kuruca
- Science Faculty of Akdeniz University, 07058 Antalya, Türkiye
| | - Esin Akarsu
- Science Faculty of Akdeniz University, 07058 Antalya, Türkiye.
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He X, Zhang S, Zhong Y, Huang X, Liu F, He J, Mai S. A low-shrinkage-stress and anti-bacterial adherent dental resin composite: physicochemical properties and biocompatibility. J Mater Chem B 2024; 12:814-827. [PMID: 38189164 DOI: 10.1039/d3tb01556d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Polymerisation shrinkage and biofilm accumulation are the two main problems associated with dental resin composites (DRCs) that induce secondary caries, which can cause restoration failure. Polymerisation shrinkage can lead to microleakage gaps between the tooth and the DRCs, causing the aggregation of bacteria and development of secondary caries. Reducing the shrinkage stress (SS) and improving the resistance to bacterial adhesion have always been the focus of this field in modifying DRCs. A thiol-ene resin system can effectively reduce the polymerisation SS via its step-growth mechanism for delaying the gel point. Fluorinated compounds can reduce the surface free energies, thereby reducing bacterial adhesion. Thus, in this study, a range of mass fractions (0, 10, 20, 30, and 40 wt%) of a fluorinated thiol-ene resin system were added to a fluorinated dimethacrylate resin system/tricyclo decanedimethanol diacrylate to create a fluorinated methacrylate-thiol-ene ternary resin matrix. DRCs were prepared using the obtained ternary resin matrix, and their physical and chemical properties, effect on bacterial adhesion, and biocompatibility were investigated. The results demonstrated that the volumetric shrinkage and SS of the DRCs were reduced with no reduction in conversion degree even after the thiol-ene resin system was added. All DRC-based fluorinated resin systems exhibited an excellent anti-bacterial adhesion effect, as evidenced by the colony-forming unit counts, live/dead bacterial staining, and crystal violet staining tests against Streptococcus mutans (S. mutans). The genetic expressions associated with the bacterial adhesion of S. mutans were substantially affected after being cultured with fluorinated DRCs. All fluorinated DRCs demonstrated good biocompatibility through the in vitro cytotoxicity test and live/dead staining images of the L-929 cells. The above results illustrate that the DRCs based on the fluorinated methacrylate-thiol-ene resin matrix can be potentially applied in clinical practice due to their low SS and anti-bacterial adhesion effect.
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Affiliation(s)
- Xinlin He
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, People's Republic of China.
- Guanghua School of Stomatology, Sun Yat-sen University, Guangdong, 510055, People's Republic of China
- Institute of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, People's Republic of China
| | - Shengcan Zhang
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, Guangdong, 510641, People's Republic of China.
| | - Yewen Zhong
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, People's Republic of China.
- Guanghua School of Stomatology, Sun Yat-sen University, Guangdong, 510055, People's Republic of China
- Institute of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, People's Republic of China
| | - Xiangya Huang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, People's Republic of China.
- Guanghua School of Stomatology, Sun Yat-sen University, Guangdong, 510055, People's Republic of China
- Institute of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, People's Republic of China
| | - Fang Liu
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, Guangdong, 510641, People's Republic of China.
| | - Jingwei He
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, Guangdong, 510641, People's Republic of China.
| | - Sui Mai
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, People's Republic of China.
- Guanghua School of Stomatology, Sun Yat-sen University, Guangdong, 510055, People's Republic of China
- Institute of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, People's Republic of China
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Shi X, Zhang R, Sand W, Mathivanan K, Zhang Y, Wang N, Duan J, Hou B. Comprehensive Review on the Use of Biocides in Microbiologically Influenced Corrosion. Microorganisms 2023; 11:2194. [PMID: 37764038 PMCID: PMC10535546 DOI: 10.3390/microorganisms11092194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/04/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
A microbiologically influenced corrosion (MIC) causes huge economic losses and serious environmental damage every year. The prevention and control measures for MIC mainly include physical, chemical, and biological methods. Among them, biocide application is the most cost-effective method. Although various biocides have their own advantages in preventing and treating MIC, most biocides have the problem of polluting the environment and increasing microorganism resistance. Therefore, it has stimulated the exploration of continuously developing new environmentally friendly and efficient biocides. In this review, the application advantages and research progress of various biocides used to prevent and control MIC are discussed. Also, this review provides a resource for the research and rational use of biocides regarding MIC mitigation and prevention.
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Affiliation(s)
- Xin Shi
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.S.); (W.S.); (K.M.); (Y.Z.); (N.W.); (J.D.); (B.H.)
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Open Studio for Marine Corrosion and Protection, Laoshan Laboratory, Qingdao 266237, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruiyong Zhang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.S.); (W.S.); (K.M.); (Y.Z.); (N.W.); (J.D.); (B.H.)
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Open Studio for Marine Corrosion and Protection, Laoshan Laboratory, Qingdao 266237, China
- Institute of Marine Corrosion Protection, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning 530007, China
| | - Wolfgang Sand
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.S.); (W.S.); (K.M.); (Y.Z.); (N.W.); (J.D.); (B.H.)
- Aquatic Biotechnology, University of Duisburg-Essen, 45141 Essen, Germany
- Institute of Biosciences, University of Mining and Technology, 09599 Freiberg, Germany
| | - Krishnamurthy Mathivanan
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.S.); (W.S.); (K.M.); (Y.Z.); (N.W.); (J.D.); (B.H.)
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Yimeng Zhang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.S.); (W.S.); (K.M.); (Y.Z.); (N.W.); (J.D.); (B.H.)
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Open Studio for Marine Corrosion and Protection, Laoshan Laboratory, Qingdao 266237, China
| | - Nan Wang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.S.); (W.S.); (K.M.); (Y.Z.); (N.W.); (J.D.); (B.H.)
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Open Studio for Marine Corrosion and Protection, Laoshan Laboratory, Qingdao 266237, China
| | - Jizhou Duan
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.S.); (W.S.); (K.M.); (Y.Z.); (N.W.); (J.D.); (B.H.)
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Open Studio for Marine Corrosion and Protection, Laoshan Laboratory, Qingdao 266237, China
- Institute of Marine Corrosion Protection, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning 530007, China
| | - Baorong Hou
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.S.); (W.S.); (K.M.); (Y.Z.); (N.W.); (J.D.); (B.H.)
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Open Studio for Marine Corrosion and Protection, Laoshan Laboratory, Qingdao 266237, China
- Institute of Marine Corrosion Protection, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning 530007, China
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Saseendran Nair S, Anand V, De Silva K, Wiles S, Swift S. The antibacterial potency and antibacterial mechanism of a commercially available surface-anchoring quaternary ammonium salt (SAQAS)-based biocide in vitro. J Appl Microbiol 2022; 133:2583-2598. [PMID: 35870145 PMCID: PMC9796750 DOI: 10.1111/jam.15729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/06/2022] [Accepted: 07/18/2022] [Indexed: 01/07/2023]
Abstract
AIMS To determine the antimicrobial potency of a surface-anchored quaternary ammonium salt (SAQAS)-based biocide during in vitro wet and dry fomite assays and to determine the mechanism of killing bacteria on the surface. METHODS AND RESULTS Wet and dry fomite assays were established in vitro for a commercially available biocide (SAQAS-A) applied to glass and low-density polyethylene (LDPE) surfaces. Both wet and dry fomite tests showed the active killing of Gram-positive and Gram-negative bacteria but not endospores. Assays measuring membrane permeability (ATP and DNA release), bacterial membrane potential and bacterial ROS production were correlated with the time-to-kill profiles to show SAQAS-A activity in suspension and applied to a surface. CONCLUSIONS SAQAS-A is an effective biocide against model strains of vegetative bacteria. The killing mechanism for SAQAS-A observed minimal membrane depolarization, a surge in ROS production and assessment of membrane permeability supported the puncture of cells in both suspension and surface attachment, leading to cell death. SIGNIFICANCE AND IMPACT OF THE STUDY SAQAS represents effective surface biocides against single challenges with bacteria through a mechanical killing ability that supports real-world application if their durability can be demonstrated to maintain residual activity.
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Affiliation(s)
- Shilpa Saseendran Nair
- Department of Molecular Medicine and PathologyWaipapa Taumata Rau University of AucklandAucklandNew Zealand
| | - Vikash Anand
- Department of Molecular Medicine and PathologyWaipapa Taumata Rau University of AucklandAucklandNew Zealand
| | - Karnika De Silva
- NZ Product Accelerator, Faculty of EngineeringWaipapa Taumata Rau University of AucklandAucklandNew Zealand
| | - Siouxsie Wiles
- Department of Molecular Medicine and PathologyWaipapa Taumata Rau University of AucklandAucklandNew Zealand
| | - Simon Swift
- Department of Molecular Medicine and PathologyWaipapa Taumata Rau University of AucklandAucklandNew Zealand
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Bapat RA, Parolia A, Chaubal T, Yang HJ, Kesharwani P, Phaik KS, Lin SL, Daood U. Recent Update on Applications of Quaternary Ammonium Silane as an Antibacterial Biomaterial: A Novel Drug Delivery Approach in Dentistry. Front Microbiol 2022; 13:927282. [PMID: 36212832 PMCID: PMC9539660 DOI: 10.3389/fmicb.2022.927282] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
Quaternary ammonium silane [(QAS), codename – k21] is a novel biomaterial developed by sol-gel process having broad spectrum antimicrobial activities with low cytotoxicity. It has been used in various concentrations with maximum antimicrobial efficacy and biocompatibility. The antimicrobial mechanism is displayed via contact killing, causing conformational changes within the bacterial cell membrane, inhibiting Sortase-A enzyme, and causing cell disturbances due to osmotic changes. The compound can attach to S1' pockets on matrix metalloproteinases (MMPs), leading to massive MMP enzyme inhibition, making it one of the most potent protease inhibitors. Quaternary ammonium silane has been synthesized and used in dentistry to eliminate the biofilm from dental tissues. QAS has been tested for its antibacterial activity as a cavity disinfectant, endodontic irrigant, restorative and root canal medication, and a nanocarrier for drug delivery approaches. The review is first of its kind that aims to discuss applications of QAS as a novel antibacterial biomaterial for dental applications along with discussions on its cytotoxic effects and future prospects in dentistry.
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Affiliation(s)
- Ranjeet Ajit Bapat
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Abhishek Parolia
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Tanay Chaubal
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Ho Jan Yang
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Prashant Kesharwani
- School of Pharmaceutical Education and Research, Jamia Hamdard (Hamdard University), New Delhi, India
| | - Khoo Suan Phaik
- Division of Clinical Oral Health, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Seow Liang Lin
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Umer Daood
- Restorative Dentistry Division, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
- *Correspondence: Umer Daood
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Mohammadi-Aragh MK, Linhoss JE, Evans JD. Effects of various disinfectants on the bacterial load and microbiome of broiler hatching eggs using electrostatic spray. J APPL POULTRY RES 2022. [DOI: 10.1016/j.japr.2022.100278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Andrade JT, Lima WG, Sousa JF, Saldanha AA, Nívea Pereira De Sá, Morais FB, Prates Silva MK, Ribeiro Viana GH, Johann S, Soares AC, Araújo LA, Antunes Fernandes SO, Cardoso VN, Siqueira Ferreira JM. Design, synthesis, and biodistribution studies of new analogues of marine alkaloids: Potent in vitro and in vivo fungicidal agents against Candida spp. Eur J Med Chem 2021; 210:113048. [PMID: 33316690 DOI: 10.1016/j.ejmech.2020.113048] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 06/26/2020] [Accepted: 11/23/2020] [Indexed: 12/28/2022]
Abstract
Invasive candidiasis, such as intra-abdominal candidiasis (IAC), is a significant cause of morbidity and mortality worldwide. IAC is still poorly understood, and its treatment represents a challenge for public health. In this study, we showed the in vitro anti-Candida activity of four alkaloid synthetic derivatives and their antifungal potential in a murine model of IAC. The biological effects of alkaloids were evaluated against Candida spp. through the determination of the minimum inhibitory concentration (MIC). For the alkaloids that showed antifungal activity, the fungicidal concentration, time-kill curve, synergism with azoles and polyenes, phenotypic effects, and the effect against virulence factors were also determined. The most active alkaloids were selected for in vivo assays. The compounds 6a and 6b were active against C. albicans, C. glabrata, and C. tropicalis (MIC 7.8 μg/mL) and showed promising antifungal activity against C. krusei (MIC 3.9 μg/mL). The compound 6a presented a potent fungicidal effect in vitro, eliminating the yeast C. albicans after 8 h of incubation at MIC. An important in vitro synergistic effect with ketoconazole was observed for these two alkaloids. They also induced the lysis of fungal cells by binding to the ergosterol of the membrane. Besides that, 6a and 6b were able to reduce yeast-to-hyphal transition in C. albicans, as well as inhibit the biofilm formation of this pathogen. In the in vivo assay, the compound 6a did not show acute toxicity and was mainly absorbed by the liver, spleen, and lung after a parenteral administration. Also, this analogue significantly reduced the fungal load of C. albicans on the kidney and spleen of animals with IAC. Therefore, these results showed that the compound 6a is a potent anti-Candida agent in vitro and in vivo.
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Affiliation(s)
- Jéssica Tauany Andrade
- Laboratório de Microbiologia Médica, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - William Gustavo Lima
- Laboratório de Microbiologia Médica, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil; Laboratório de Radioisótopos, Departamento de Análises Clinicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jaqueline França Sousa
- Laboratório de Compostos Bioativos e Catalíticos, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Aline Aparecida Saldanha
- Laboratório de Farmacologia da Dor e Inflamação, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Nívea Pereira De Sá
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Fernanda Barbara Morais
- Laboratório de Microbiologia Médica, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Mayra Karla Prates Silva
- Laboratório de Microbiologia Médica, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Gustavo Henrique Ribeiro Viana
- Laboratório de Compostos Bioativos e Catalíticos, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Susana Johann
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Adriana Cristina Soares
- Laboratório de Farmacologia da Dor e Inflamação, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Leonardo Allan Araújo
- Serviço de Recursos Vegetais e Opoterápicos (SRVO), Diretoria de Pesquisa (DPD), Fundação Ezequiel Dias (FUNED), Belo Horizonte, MG, Brazil
| | - Simone Odília Antunes Fernandes
- Laboratório de Radioisótopos, Departamento de Análises Clinicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Valbert Nascimento Cardoso
- Laboratório de Radioisótopos, Departamento de Análises Clinicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jaqueline Maria Siqueira Ferreira
- Laboratório de Microbiologia Médica, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil.
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A Multifunctional Antibacterial and Osteogenic Nanomedicine: QAS-Modified Core-Shell Mesoporous Silica Containing Ag Nanoparticles. BIOMED RESEARCH INTERNATIONAL 2020; 2020:4567049. [PMID: 33015165 PMCID: PMC7520689 DOI: 10.1155/2020/4567049] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/21/2020] [Accepted: 09/04/2020] [Indexed: 12/16/2022]
Abstract
Treatments for infectious bone defects such as periodontitis require antibacterial and osteogenic differentiation capabilities. Nanotechnology has prompted the development of multifunctional material. In this research, we aim to synthesize a nanoparticle that can eliminate periodontal pathogenic microorganisms and simultaneously stimulate new bone tissue regeneration and mineralization. QAS-modified core-shell mesoporous silica containing Ag nanoparticles (Ag@QHMS) was successfully synthesized through the classic hydrothermal method and surface quaternary ammonium salt functionalization. The Ag@QHMS in vitro antibacterial activity was explored via coculture with Staphylococcus aureus, Escherichia coli, and Porphyromonas gingivalis biofilms. Bone mesenchymal stem cells (BMSCs) were selected for observing cytotoxicity, apoptosis, and osteogenic differentiation. Ag@QHMS showed a good sustained release profile of Ag+ and a QAS-grafted mesoporous structure. Compared with the single-contact antibacterial activity of QHMS, Ag@QHMS exhibited a more efficient and stable concentration-dependent antimicrobial efficacy; the minimum inhibitory concentration was within 100 μg/ml, which was below the BMSC biocompatibility concentration (200 μg/ml). Thus, apoptosis would not occur while promoting the increased expression of osteogenic-associated factors, such as runt-related transcription factor 2 (RUNX2), alkaline phosphatase (ALP), osteopontin (OPN), osteocalcin (OCN), bone sialoprotein (BSP), and collagen type 1 (COL-1). A safe concentration of particles can stimulate cell alkaline phosphatase and matrix calcium salt deposition. The dual antibacterial effect from the direct contact killing of QAS and the sustained release of Ag nanoparticles, along with the Ag-promoted osteogenic differentiation, had been verified and utilized in Ag@QHMS. This system demonstrates the potential for utilizing pluripotent biomaterials to treat complex lesions.
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Daood U, Matinlinna JP, Pichika MR, Mak KK, Nagendrababu V, Fawzy AS. A quaternary ammonium silane antimicrobial triggers bacterial membrane and biofilm destruction. Sci Rep 2020; 10:10970. [PMID: 32620785 PMCID: PMC7335202 DOI: 10.1038/s41598-020-67616-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 06/03/2020] [Indexed: 02/06/2023] Open
Abstract
To study the antimicrobial effects of quaternary ammonium silane (QAS) exposure on Streptococcus mutans and Lactobacillus acidophilus bacterial biofilms at different concentrations. Streptococcus mutans and Lactobacillus acidophilus biofilms were cultured on dentine disks, and incubated for bacterial adhesion for 3-days. Disks were treated with disinfectant (experimental QAS or control) and returned to culture for four days. Small-molecule drug discovery-suite was used to analyze QAS/Sortase-A active site. Cleavage of a synthetic fluorescent peptide substrate, was used to analyze inhibition of Sortase-A. Raman spectroscopy was performed and biofilms stained for confocal laser scanning microscopy (CLSM). Dentine disks that contained treated dual-species biofilms were examined using scanning electron microscopy (SEM). Analysis of DAPI within biofilms was performed using CLSM. Fatty acids in bacterial membranes were assessed with succinic-dehydrogenase assay along with time-kill assay. Sortase-A protein underwent conformational change due to QAS molecule during simulation, showing fluctuating alpha and beta strands. Spectroscopy revealed low carbohydrate intensities in 1% and 2% QAS. SEM images demonstrated absence of bacterial colonies after treatment. DAPI staining decreased with 1% QAS (p < 0.05). Fatty acid compositions of dual specie biofilm increased in both 1% and 2% QAS specimens (p < 0.05). Quaternary ammonium silane demonstrated to be a potent antibacterial cavity disinfectant and a plaque inhibitor and can be of potential significance in eliminating caries-forming bacteria.
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Affiliation(s)
- Umer Daood
- Division of Clinical Dentistry, Faculty of Dentistry, School of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Wilayah Persekutuan Kuala Lumpur, Malaysia.
| | - Jukka P Matinlinna
- Dental Materials Science, Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Sai Ying Pun, Hong Kong, SAR, People's Republic of China
| | - Malikarjuna Rao Pichika
- Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Kit-Kay Mak
- Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Venkateshbabu Nagendrababu
- Division of Clinical Dentistry, Faculty of Dentistry, School of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Amr S Fawzy
- UWA Dental School, University of Western Australia, Nedlands, WA, 6009, Australia
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Aminoroaya A, Esmaeely Neisiany R, Nouri Khorasani S, Panahi P, Das O, Ramakrishna S. A Review of Dental Composites: Methods of Characterizations. ACS Biomater Sci Eng 2020; 6:3713-3744. [DOI: 10.1021/acsbiomaterials.0c00051] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alireza Aminoroaya
- Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Rasoul Esmaeely Neisiany
- Department of Materials and Polymer Engineering, Faculty of Engineering, Hakim Sabzevari University, Sabzevar 9617976487, Iran
| | - Saied Nouri Khorasani
- Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Parisa Panahi
- Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Oisik Das
- Material Science Division, Department of Engineering Sciences and Mathematics, Luleå University of Technology, Luleå 97187, Sweden
| | - Seeram Ramakrishna
- Centre for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
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11
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Organosilicate compound filler to increase the mechanical strength of superhydrophilic layer-by-layer assembled film. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.01.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Prosthodontics dental materials: From conventional to unconventional. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 106:110167. [DOI: 10.1016/j.msec.2019.110167] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 08/30/2019] [Accepted: 09/05/2019] [Indexed: 11/19/2022]
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13
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Park S, Jung S, Heo J, Hong J. Facile synthesis of polysilsesquioxane toward durable superhydrophilic/superhydrophobic coatings for medical devices. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.04.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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14
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Maia AC, Mangabeira A, Vieira R, Neves ADA, Lopes RT, Pires TM, Viana GM, Cabral LM, Cavalcante LM, Portela MB. Experimental composites containing quaternary ammonium methacrylates reduce demineralization at enamel-restoration margins after cariogenic challenge. Dent Mater 2019; 35:e175-e183. [PMID: 31204047 DOI: 10.1016/j.dental.2019.05.021] [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: 10/10/2018] [Revised: 05/20/2019] [Accepted: 05/22/2019] [Indexed: 11/29/2022]
Abstract
OBJECTIVE This study evaluated the influence of experimental composites containing quaternary ammonium monomers (QAM) at different concentrations and alkyl chains on demineralization at enamel-composite margins after cariogenic challenge. METHODS Standardized 4×4mm cavities were cut into 35 bovine enamel blocks, which were randomly divided into seven groups (n=5) and restored with the following experimental composites and commercial materials: (G12.5) - 5% dimethylaminododecyl methacrylate (DMADDM) with a 12-carbon alkyl chain (G12.10) - 10% DMADDM, (G16.5) - 5% dimethylaminohexadecyl methacrylate (DMAHDM) with a 16-carbon alkyl chain (G16.10) - 10% DMAHDM, (CG) - control group (without QAM), (GZ250) - commercial composite (Filtek Z250®), and (GIC) - glass ionomer cement (Maxxion R®). After restorative procedures, initial microhardness was measured and experimental composites were subjected to Streptococcus mutans biofilm formation for 48h. After cariogenic challenge, the samples were washed and microhardness was reassessed. A 3D non-contact profilometer was used to determine surface roughness and enamel demineralization was assessed by micro-CT. Microhardness results were analyzed by the Kruskal-Wallis and Mann-Whitney tests and micro-CT results were analyzed by Tukey's HSD test (95% confidence interval). RESULTS None of the materials could prevent mineral loss at the enamel-restoration margins. The addition of 10% DMAHDM yielded the lowest, albeit statistically significant, mineral loss (p<0.05). 3D non-contact profilometry showed enamel surface roughness modification after biofilm exposure. The CG had the highest roughness values. Micro-CT analysis revealed mineral loss, except for GIC. SIGNIFICANCE The addition of 10% QAM with a 16-carbon chain in experimental composites reduced mineral loss at the enamel-restoration margins after cariogenic challenge.
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Affiliation(s)
- André Coimbra Maia
- Faculdade de Odontologia, Universidade Federal Fluminense, Niterói, RJ, Brazil
| | - Adrielle Mangabeira
- Faculdade de Odontologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Renato Vieira
- Faculdade de Odontologia, Universidade Federal Fluminense, Niterói, RJ, Brazil
| | - Aline de Almeida Neves
- Faculdade de Odontologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ricardo Tadeu Lopes
- Laboratório de Instrumentação Nuclear, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Thais Maria Pires
- Laboratório de Instrumentação Nuclear, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Gil Mendes Viana
- Faculdade de Farmácia, Laboratório TIF, Universidade Federal do Rio de Janeiro - UFRJ, Rio de Janeiro, RJ, Brazil
| | - Lúcio Mendes Cabral
- Faculdade de Farmácia, Laboratório TIF, Universidade Federal do Rio de Janeiro - UFRJ, Rio de Janeiro, RJ, Brazil
| | - Larissa Maria Cavalcante
- Faculdade de Odontologia, Universidade Federal Fluminense, Niterói, RJ, Brazil; Núcleo de Pesquisa em Biomateriais Dentários, Faculdade de Odontologia, Universidade Veiga de Almeida - UVA, Rio de Janeiro, RJ, Brazil
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An in vitro study of a novel quaternary ammonium silane endodontic irrigant. Dent Mater 2019; 35:1264-1278. [PMID: 31201019 DOI: 10.1016/j.dental.2019.05.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 05/19/2019] [Accepted: 05/22/2019] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To analyze effect of NaOCl+2% quaternary ammonium silane (QAS)-containing novel irrigant against bacteria impregnated inside the root canal system, and to evaluate its antimicrobial and mechanical potential of dentine substrate. METHODS Root canal was prepared using stainless steel K-files™ and ProTaper™ and subjected to manual and ultrasonic irrigation using 6% NaOCl+2% CHX, 6% NaOCl+2% QAS and saline as control. For confocal-microscopy, Raman spectroscopy and SEM analysis before and after treatment, Enterococcus faecalis cultured for 7 days. Raman spectroscopy analysis was done across cut section of gutta percha/sealer-dentine to detect resin infiltration. Indentation of mechanical properties was evaluated using a Berkovich indenter. The contact angle of irrigants and surface free energy were evaluated. Mineralization nodules were detected through Alazarin red after 14 days. RESULTS Control biofilms showed dense green colonies. Majority of E. faecalis bacteria were present in biofilm fluoresced red in NaOCl+2% QAS group. There was reduction of 484cm-1 Raman band and its intensity reached lowest with NaOCl+2% QAS. There was an increase in 1350-1420cm-1 intensity in the NaOCl+2% CHX groups. Gradual decrease in 1639cm-1 and 1609cm-1 Raman signal ratios were seen in the resin-depth region of 17μm>, 14.1μm> and 13.2μm for NaOCl+2% QAS, NaOCl+2% CHX and control groups respectively. All obturated groups showed an intact sealer/dentine interface with a few notable differences. 0.771 and 83.5% creep indentation distance for NaOCl+2% QAS ultrasonic groups were observed. Highest proportion of polar component was significantly found in the NaOCl+2% QAS groups which was significantly higher as compared to other groups. Mineralized nodules were increased in NaOCl+2% QAS. SIGNIFICANCE Favorable antimicrobial and endodontic profile of the NaOCl+2% QAS solution might suggest clinical use for it for more predictable reduction of intracanal bacteria.
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Effects of single species versus multispecies periodontal biofilms on the antibacterial efficacy of a novel bioactive Class-V nanocomposite. Dent Mater 2019; 35:847-861. [DOI: 10.1016/j.dental.2019.02.030] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 02/21/2019] [Accepted: 02/27/2019] [Indexed: 12/21/2022]
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17
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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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Bai YM, Mao J, Li DX, Luo XJ, Chen J, Tay FR, Niu LN. Bimodal antibacterial system based on quaternary ammonium silane-coupled core-shell hollow mesoporous silica. Acta Biomater 2019; 85:229-240. [PMID: 30593887 DOI: 10.1016/j.actbio.2018.12.037] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 11/30/2018] [Accepted: 12/21/2018] [Indexed: 12/20/2022]
Abstract
Hollow mesoporous silica (HMS) have been extensively investigated as a biomaterial for drug delivery. The present study developed quaternary ammonium silane-grafted hollow mesoporous silica (QHMS) to create a metronidazole (MDZ) sustained delivery system, MDZ@QHMS, with bimodal, contact-kill and release-kill capability. The QHMS was assembled through a self-templating method. Metronidazole was incorporated within the QHMS core using solvent evaporation. Antibacterial activities of the MDZ@QHMS were investigated using single-species biofilms of Staphylococcus aureus (ATCC25923), Escherichia coli (ATCC25922) and Porphyromonas gingivalis (ATCC33277). The MDZ@QHMS maintained a hollow mesoporous structure and demonstrated sustained drug release and bacteridal actvity against the three bacterial strains at a concentration of 100 μg/mL or above. These nanoparticles were not relatively cytotoxic to human gingival fibroblasts when employed below 100 µg/mL. Compared with HMS, the MDZ@QHMS system at the same concentration demonstrated antibiotic-elution and contact-killing bimodal antibacterial activities. The synthesized drug carrier with sustained, bimodal antibacterial function and minimal cytotoxicity possesses potential for localized antibiotic applications. STATEMENT OF SIGNIFICANCE: The present study develops quaternary ammonium silane-grafted hollow mesoporous silica (QHMS) to create a metronidazole (MDZ) sustained delivery system, MDZ@QHMS, with bimodal, contact-kill and release-kill capability. This system demonstrates sustained drug release and maintained a hollow mesoporous structure. The synthesized drug carrier with sustained, bimodal antibacterial function and excellent biocompatibility possesses potential for localized antibiotic applications.
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Tranquillo E, Barrino F, Dal Poggetto G, Blanco I. Sol⁻Gel Synthesis of Silica-Based Materials with Different Percentages of PEG or PCL and High Chlorogenic Acid Content. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E155. [PMID: 30621329 PMCID: PMC6337738 DOI: 10.3390/ma12010155] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 12/23/2018] [Accepted: 12/29/2018] [Indexed: 12/20/2022]
Abstract
Implanted biomedical devices can induce adverse responses in the human body, which can cause failure of the implant-referred to as implant failure. Early implant failure is induced numerous factors, most importantly, infection and inflammation. Natural products are, today, one of the main sources of new drug molecules due to the development of pathogenic bacterial strains that possess resistance to more antibiotics used currently in various diseases. The aim of this work is the sol⁻gel synthesis of antibacterial biomedical implants. In the silica matrix, different percentages (6, 12, 24, 50 wt %) of polyethylene glycol (PEG) or poly(ε-caprolactone) (PCL) were embedded. Subsequently, the ethanol solutions with high amounts of chlorogenic acid (CGA 20 wt %) were slowly added to SiO₂/PEG and SiO₂/PCL sol. The interactions among different organic and inorganic phases in the hybrid materials was studied by Fourier transform infrared (FTIR) spectroscopy. Furthermore, the materials were soaked in simulated body fluid (SBF) for 21 days and the formation of a hydroxyapatite layer on their surface was evaluated by FTIR and XRD analysis. Finally, Escherichia coli and Pseudomonas aeruginosa were incubated with several hybrids, and the diameter of zone of inhibition was observed to assessment the potential antibacterial properties of the hybrids.
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Affiliation(s)
- Elisabetta Tranquillo
- Department of Engineering, University of Campania "Luigi Vanvitelli", via Roma 29, 81031 Aversa, Italy.
| | - Federico Barrino
- Department of Engineering, University of Campania "Luigi Vanvitelli", via Roma 29, 81031 Aversa, Italy.
| | | | - Ignazio Blanco
- Department of Civil Engineering and Architecture and UdR-Catania Consorzio INSTM, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy.
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20
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Wang W, Wu F, Zhang G, Zhu S, Ban J, Wang L. Preparation of a highly crosslinked biosafe dental nanocomposite resin with a tetrafunctional methacrylate quaternary ammonium salt monomer. RSC Adv 2019; 9:41616-41627. [PMID: 35541606 PMCID: PMC9076464 DOI: 10.1039/c9ra09173d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 12/10/2019] [Indexed: 12/24/2022] Open
Abstract
The design of antimicrobial dental nanocomposite resin to prevent secondary dental caries and minimize biosafety problems is an important endeavor with both fundamental and practical implications.
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Affiliation(s)
- Weiguo Wang
- Department of Stomatology
- Hangzhou
- People's Republic of China
| | - Fan Wu
- Department of Stomatology
- Hangzhou
- People's Republic of China
| | - Guoqing Zhang
- Department of Stomatology
- Hangzhou
- People's Republic of China
| | - Sailing Zhu
- Department of Stomatology
- Hangzhou
- People's Republic of China
| | - Jinghao Ban
- School of Stomatology
- Fourth Military Medical University
- Xi'an
- People's Republic of China
| | - Limin Wang
- Department of Stomatology
- Hangzhou
- People's Republic of China
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Wei Y, Zheng C, Zhang Z, Zeng Z, Mao T, Long S, Ling H. Synthesis, Surface Properties, and Antibacterial Activity of Novel Ester‐Containing Cationic Silicone Surfactants and Their Utilization as Fabric‐Finishing Agents. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12211] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuan Wei
- Department of Chemical Engineering Guangzhou University Guangzhou Guangdong 510006 China
| | - Cheng Zheng
- Department of Chemical Engineering Guangzhou University Guangzhou Guangdong 510006 China
- Guangzhou Vocational College of Science and Technology Guangzhou Guangdong 510550 China
| | - Zhenqiang Zhang
- Department of Chemical Engineering Guangzhou University Guangzhou Guangdong 510006 China
| | - Zhaowen Zeng
- Department of Chemical Engineering Guangzhou University Guangzhou Guangdong 510006 China
| | - Taoyan Mao
- Department of Chemical Engineering Guangzhou University Guangzhou Guangdong 510006 China
| | - Shikang Long
- Department of Chemical Engineering Guangzhou University Guangzhou Guangdong 510006 China
| | - Hui Ling
- Department of Chemical Engineering Guangzhou University Guangzhou Guangdong 510006 China
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Gou YP, Meghil MM, Pucci CR, Breschi L, Pashley DH, Cutler CW, Niu LN, Li JY, Tay FR. Optimizing resin-dentin bond stability using a bioactive adhesive with concomitant antibacterial properties and anti-proteolytic activities. Acta Biomater 2018; 75:171-182. [PMID: 29883811 DOI: 10.1016/j.actbio.2018.06.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 06/03/2018] [Accepted: 06/04/2018] [Indexed: 12/17/2022]
Abstract
Secondary caries and hybrid layer degradation are two major challenges encountered in long-term resin-dentin bond stability. As a link between resin and dentin, adhesives that possess both antimicrobial and anti-proteolytic activities are in demand for eliminating bacteria-induced secondary caries and preventing hybrid layers from degradation. In the present study, a new quaternary ammonium methacryloxy silane (QAMS) prepared from sol-gel chemistry was incorporated into experimental adhesives to examine their antimicrobial effect and anti-proteolytic potential. This functional methacrylate resin monomer contains polymerizable methacryloxy functionalities as well as a positively-charged quaternary ammonium functionality with a long, lipophilic -C18H37 alkyl chain for puncturing the cell wall/membrane of surface-colonizing organisms. Antibacterial testing performed using agar diffusion test, live/dead bacterial staining and colony-forming unit counts all indicated that the QAMS-containing adhesives killed Streptococcus mutans and Actinomyces naeslundii in a dose-dependent manner via a predominant contact-killing mechanism. Gelatinolytic activity within the hybrid layers created by these adhesives was examined using in-situ zymography. Hybrid layers created with 0% QAMS-containing adhesive exhibited intense green fluorescence emitted by the hydrolyzed fluorescein-conjugated gelatin, with 4-fold increase in enzymatic activity compared with an experimental adhesive containing 5% QAMS. Taken together, incorporation of 5% QAMS in the experimental adhesive provides simultaneous antimicrobial and anti-proteolytic activities that are crucial for the maintenance of long-term resin-dentin bond integrity. STATEMENT OF SIGNIFICANCE Durability of resin-dentin interfacial bond remains a clinically-significant challenge. Secondary caries caused by bacteria and the degradation of hybrid layers via endogenous dentin proteases are two important contributors to the poor resin-dentin bond durability. The present study developed a new 5% QAMS-containing adhesive that provides simultaneous antimicrobial and dentin protease inhibition functions to extend the longevity of resin-dentin bonds.
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Affiliation(s)
- Ya-Ping Gou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, PR China
| | - Mohamed M Meghil
- The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Cesar R Pucci
- Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University UNESP São Jose dos Campos, São Paulo, Brazil
| | - Lorenzo Breschi
- Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna - Alma Mater Studiorum, Bologna, Italy
| | - David H Pashley
- The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | | | - Li-Na Niu
- The Dental College of Georgia, Augusta University, Augusta, GA, USA; State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Ji-Yao Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, PR China.
| | - Franklin R Tay
- The Dental College of Georgia, Augusta University, Augusta, GA, USA; State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China.
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Makvandi P, Jamaledin R, Jabbari M, Nikfarjam N, Borzacchiello A. Antibacterial quaternary ammonium compounds in dental materials: A systematic review. Dent Mater 2018; 34:851-867. [PMID: 29678327 DOI: 10.1016/j.dental.2018.03.014] [Citation(s) in RCA: 178] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 03/20/2018] [Accepted: 03/23/2018] [Indexed: 01/12/2023]
Abstract
OBJECTIVE Quaternary ammonium compounds (QACs) represent one of the most effective classes of disinfectant agents in dental materials and resin nanocomposites. This reviews aims to give a wide overview on the research in the field of antibacterial QACs in dental materials and nanocomposites. METHOD An introduction to dental materials components as well as the microorganisms and methods of evaluation for the antimicrobial assays are presented. Then, the properties and synthesis route of QACs, as monomer and filler, are shown. Finally, antimicrobial monomers and fillers, specifically those contain quaternary ammonium salts (QASs), in dental materials are reviewed. RESULTS QACs have been used as monomer and micro/nanofiller in restorative dentistry. They possess one or more methacrylate functional groups to participate in polymerization reactions. QACs with multiple methacrylate groups can also be used as crosslinking agents. Furthermore, QACs with chain length from ∼12 to 16 have higher antimicrobial activity in cured dental resins. In general, increasing the chain length leads to a threshold value (critical point) and then it causes decrease in the antimicrobial activity. SIGNIFICANCE The current state of the art of dental materials and resin nanocomposites includes a wide variety of antimicrobial materials. Among them, QACs presents low cytotoxicity and excellent long-term antimicrobial activity without leaching out over time.
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Affiliation(s)
- Pooyan Makvandi
- Institute for Polymers, Composites and Biomaterials (IPCB), National Research Council (CNR), Naples, Italy; Institute for Advanced Studies in Basic Sciences, Zanjan, Iran.
| | - Rezvan Jamaledin
- Center for Advanced Biomaterials for Health Care, Istituto Italiano di Tecnologia (IIT@CRIB), Napels, Italy
| | - Mostafa Jabbari
- Swedish Centre for Resource Recovery, University of Borås, Borås SE-50190, Sweden
| | | | - Assunta Borzacchiello
- Institute for Polymers, Composites and Biomaterials (IPCB), National Research Council (CNR), Naples, Italy.
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Development of Transparent Antimicrobial Scratch-Resistant Sol–Gel Coating for PMMA Surface. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2017. [DOI: 10.1007/s13369-017-2877-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Xie X, Cong W, Zhao F, Li H, Xin W, Hou G, Wang C. Synthesis, physiochemical property and antimicrobial activity of novel quaternary ammonium salts. J Enzyme Inhib Med Chem 2017; 33:98-105. [PMID: 29148294 PMCID: PMC6010013 DOI: 10.1080/14756366.2017.1396456] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Twenty-four novel 5-phenyl-1,3,4-oxadiazole-2-thiol (POT) analogues, benzo[d]oxazole-2-thiol, benzo[d]thiazole-2-thiol and 5-methyl-1,3,4-thiadiazole-2-thiol-substituted N,N-bis(2-hydroxyethyl) quaternary ammonium salts (QAS) (5a-d, 6a-d, 7a-d, 10a-d, 13a-d, 16a-d) were prepared and characterised by FTIR, NMR and elemental analysis. Part of target compounds (5d, 6d, 7d, 10d, 13d, 16d) displayed potent antimicrobial effect against ten common pathogens (S. aureus, α-H-tococcus, β-H-tococcus, E. coli, P. aeruginosa, Proteus vulgaris, Canidia Albicans, Cytospora mandshurica, Physalospora piricola, Aspergillus niger) and had relatively low cytotoxity against two human cell lines (HaCat and LO2). TEM and SEM images of E. coli and S. aureus morphologies treated with 7d showed that the antibacterial mechanism might be the QAS fixing on cell wall surfaces and puncturing to result in the release of bacterial cytoplasm. This study provides new information of QAS, which could be used to design novel antimicrobial agents applied in clinic or agriculture.
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Affiliation(s)
- Xianrui Xie
- a School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China , Binzhou Medical University , Yantai , P. R. China
| | - Wei Cong
- a School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China , Binzhou Medical University , Yantai , P. R. China
| | - Feng Zhao
- a School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China , Binzhou Medical University , Yantai , P. R. China
| | - Hongjuan Li
- a School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China , Binzhou Medical University , Yantai , P. R. China
| | - Wenyu Xin
- a School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China , Binzhou Medical University , Yantai , P. R. China
| | - Guige Hou
- a School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China , Binzhou Medical University , Yantai , P. R. China
| | - Chunhua Wang
- a School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China , Binzhou Medical University , Yantai , P. R. China
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Tweedy JG, Prusty BK, Gompels UA. Use of whole genome deep sequencing to define emerging minority variants in virus envelope genes in herpesvirus treated with novel antimicrobial K21. Antiviral Res 2017; 146:201-204. [PMID: 28939478 DOI: 10.1016/j.antiviral.2017.09.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 09/14/2017] [Accepted: 09/18/2017] [Indexed: 02/07/2023]
Abstract
New antivirals are required to prevent rising antimicrobial resistance from replication inhibitors. The aim of this study was to analyse the range of emerging mutations in herpesvirus by whole genome deep sequencing. We tested human herpesvirus 6 treatment with novel antiviral K21, where evidence indicated distinct effects on virus envelope proteins. We treated BACmid cloned virus in order to analyse mechanisms and candidate targets for resistance. Illumina based next generation sequencing technology enabled analyses of mutations in 85 genes to depths of 10,000 per base detecting low prevalent minority variants (<1%). After four passages in tissue culture the untreated virus accumulated mutations in infected cells giving an emerging mixed population (45-73%) of non-synonymous SNPs in six genes including two envelope glycoproteins. Strikingly, treatment with K21 did not accumulate the passage mutations; instead a high frequency mutation was selected in envelope protein gQ2, part of the gH/gL complex essential for herpesvirus infection. This introduced a stop codon encoding a truncation mutation previously observed in increased virion production. There was reduced detection of the glycoprotein complex in infected cells. This supports a novel pathway for K21 targeting virion envelopes distinct from replication inhibition.
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Affiliation(s)
- Joshua G Tweedy
- Department of Pathogen Molecular Biology, London School Hygiene & Tropical Medicine, University of London, UK
| | - Bhupesh K Prusty
- Biocenter, Chair of Microbiology, University of Wurzberg, Germany
| | - Ursula A Gompels
- Department of Pathogen Molecular Biology, London School Hygiene & Tropical Medicine, University of London, UK.
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Wang CH, Xie XR, Liu WS, Hou GG, Sun JF, Zhao F, Cong W, Li HJ, Xin WY. Quaternary ammonium salts substituted by 5-phenyl-1,3,4-oxadiazole-2-thiol as novel antibacterial agents with low cytotoxicity. Chem Biol Drug Des 2017; 90:943-952. [PMID: 28498641 DOI: 10.1111/cbdd.13020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 04/26/2017] [Accepted: 05/03/2017] [Indexed: 01/16/2023]
Abstract
Twenty-one novel 5-phenyl-1,3,4-oxadiazole-2-thiol (POT) substituted N-hydroxyethyl quaternary ammonium salts (6a-g, 7a-g, 8a-g) were prepared and characterized by FTIR, NMR, and elemental analysis. Compounds 6a, 6c, and 8a were confirmed by X-ray single-crystal diffraction. They display the unsurpassed antibacterial activity against Staphylococcus aureus, α-H-tococcus, Escherichia coli, P. aeruginosa, Proteus vulgaris, Canidia Albicans, especially 6g, 7g, 8g with dodecyl group. Compounds 8a-d with N,N-dihydroxyethyl and POT groups display unsurpassed antibacterial activity and non-toxicity. The structure-activity relationships indicate that POT and flexible dihydroxyethyl group in QAS are necessary for antibacterial activity and cytotoxicity. SEM and TEM images of E. coli morphologies of 8d show the antibacterial agents can adhere to membrane surfaces to inhibit bacterial growth by disrupting peptidoglycan formation and releasing bacterial cytoplasm from cell membranes.
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Affiliation(s)
- Chun-Hua Wang
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, China
| | - Xian-Rui Xie
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, China
| | - Wen-Shuai Liu
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, China
| | - Gui-Ge Hou
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, China
| | - Ju-Feng Sun
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, China
| | - Feng Zhao
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, China
| | - Wei Cong
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, China
| | - Hong-Juan Li
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, China
| | - Wen-Yu Xin
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, China
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Sugii MM, Ferreira FADS, Müller KC, Lima DANL, Groppo FC, Imasato H, Rodrigues-Filho UP, Aguiar FHB. Physical, chemical and antimicrobial evaluation of a composite material containing quaternary ammonium salt for braces cementation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 73:340-346. [PMID: 28183617 DOI: 10.1016/j.msec.2016.12.084] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 11/11/2016] [Accepted: 12/17/2016] [Indexed: 10/20/2022]
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Effect of a novel quaternary ammonium silane cavity disinfectant on durability of resin-dentine bond. J Dent 2017; 60:77-86. [PMID: 28315376 DOI: 10.1016/j.jdent.2017.03.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/26/2017] [Accepted: 03/05/2017] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE The present study examined the effect of a quaternary ammonium silane (QAS) cavity disinfectant on the viability of human dental pulp cells, dentine bond durability and nanoleakage of simplified etch-and-rinse adhesives. METHODS Etched dentine surface of third molars were randomly divided into two adhesive groups, Adper™ Single Bond 2 and Prime & Bond® NT™. For each adhesive, the teeth were randomly assigned to five cavity disinfectant groups (N=6): Group 1: deionised water (control); Group 2: 2% chlorhexidine (CHX); Group 3: 2% QAS; Group 4: 5% QAS and Group 5: 10% QAS. The cavity disinfectants were applied on etched dentine surfaces for 20s, followed by adhesive application. The bonded teeth were sectioned for bond strength testing at 24h, 6 months and 12 months. Viability of human dental pulpal cells was examined using MTT assay. Bond strength data were analysed using 3-way ANOVA and Tukey test. Interfacial nanoleakage was evaluated after 24h and 12 months and analysed using Kruskal-Wallis test. RESULTS Significant differences in bond strength were observed for the factors disinfectants (p<0.001) and time (p<0.001); while the factor, adhesive, was not significantly different (p=0.203). The 2% QAS cavity disinfectant preserved bond strength of both adhesives and reduced interfacial nanoleakage after 12 months. Cell viability was the lowest for 2% CHX, followed by 2% QAS and the control. CONCLUSIONS The 2% QAS cavity disinfectant demonstrated greater cell viability compared to 2% CHX, with no adverse effect on immediate bond strength and preserved bond stability over time. CLINICAL SIGNIFICANCE Incorporation of 2% quaternary ammonium silane cavity disinfectant in the resin-dentine bonding protocol enhances the success rate of bonded restorations.
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Jiao Y, Niu LN, Ma S, Li J, Tay FR, Chen JH. Quaternary ammonium-based biomedical materials: State-of-the-art, toxicological aspects and antimicrobial resistance. Prog Polym Sci 2017; 71:53-90. [PMID: 32287485 PMCID: PMC7111226 DOI: 10.1016/j.progpolymsci.2017.03.001] [Citation(s) in RCA: 306] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 03/07/2017] [Accepted: 03/07/2017] [Indexed: 12/20/2022]
Abstract
Microbial infections affect humans worldwide. Many quaternary ammonium compounds have been synthesized that are not only antibacterial, but also possess antifungal, antiviral and anti-matrix metalloproteinase capabilities. Incorporation of quaternary ammonium moieties into polymers represents one of the most promising strategies for preparation of antimicrobial biomaterials. Various polymerization techniques have been employed to prepare antimicrobial surfaces with quaternary ammonium functionalities; in particular, syntheses involving controlled radical polymerization techniques enable precise control over macromolecular structure, order and functionality. Although recent publications report exciting advances in the biomedical field, some of these technological developments have also been accompanied by potential toxicological and antimicrobial resistance challenges. Recent evidenced-based data on the biomedical applications of antimicrobial quaternary ammonium-containing biomaterials that are based on randomized human clinical trials, the golden standard in contemporary medicinal science, are included in the present review. This should help increase visibility, stimulate debates and spur conversations within a wider scientific community on the implications and plausibility for future developments of quaternary ammonium-based antimicrobial biomaterials.
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Affiliation(s)
- Yang Jiao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, 710032, Xi’an, Shaanxi, China
- Department of Stomatology, PLA Army General Hospital, 100700, Beijing, China
| | - Li-na Niu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, 710032, Xi’an, Shaanxi, China
| | - Sai Ma
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, 710032, Xi’an, Shaanxi, China
| | - Jing Li
- Department of Orthopaedic Oncology, Xijing Hospital Affiliated to the Fourth Military Medical University, 710032, Xi’an, Shaanxi, China
| | - Franklin R. Tay
- Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, 30912, USA
- Corresponding authors.
| | - Ji-hua Chen
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, 710032, Xi’an, Shaanxi, China
- Corresponding authors.
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31
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Effect of a novel quaternary ammonium silane on dentin protease activities. J Dent 2017; 58:19-27. [DOI: 10.1016/j.jdent.2017.01.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/30/2016] [Accepted: 01/03/2017] [Indexed: 12/13/2022] Open
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Álvarez-Paino M, Muñoz-Bonilla A, Fernández-García M. Antimicrobial Polymers in the Nano-World. NANOMATERIALS (BASEL, SWITZERLAND) 2017; 7:E48. [PMID: 28336882 PMCID: PMC5333033 DOI: 10.3390/nano7020048] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 01/11/2017] [Accepted: 01/24/2017] [Indexed: 02/08/2023]
Abstract
Infections are one of the main concerns of our era due to antibiotic-resistant infections and the increasing costs in the health-care sector. Within this context, antimicrobial polymers present a great alternative to combat these problems since their mechanisms of action differ from those of antibiotics. Therefore, the microorganisms' resistance to these polymeric materials is avoided. Antimicrobial polymers are not only applied in the health-care sector, they are also used in many other areas. This review presents different strategies that combine nanoscience and nanotechnology in the polymer world to combat contaminations from bacteria, fungi or algae. It focuses on the most relevant areas of application of these materials, viz. health, food, agriculture, and textiles.
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Affiliation(s)
- Marta Álvarez-Paino
- Centre for Biomolecular Sciences, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Alexandra Muñoz-Bonilla
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC); C/ Juan de la Cierva 3, Madrid 28006, Spain.
| | - Marta Fernández-García
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC); C/ Juan de la Cierva 3, Madrid 28006, Spain.
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A protein-repellent and antibacterial nanocomposite for Class-V restorations to inhibit periodontitis-related pathogens. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 67:702-710. [DOI: 10.1016/j.msec.2016.05.080] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 04/27/2016] [Accepted: 05/18/2016] [Indexed: 12/29/2022]
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34
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Wang L, Melo MAS, Weir MD, Xie X, Reynolds MA, Xu HHK. Novel bioactive nanocomposite for Class-V restorations to inhibit periodontitis-related pathogens. Dent Mater 2016; 32:e351-e361. [PMID: 27671471 DOI: 10.1016/j.dental.2016.09.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 06/24/2016] [Accepted: 09/03/2016] [Indexed: 12/31/2022]
Abstract
OBJECTIVES The occurrence of tooth root caries is increasing as the world population ages and tooth retention in seniors increases. Class V restorations with subgingival margins are difficult to clean and often lead to periodontitis. The objectives of this study were to develop a Class V composite containing dimethylaminohexadecyl methacrylate (DMAHDM) and nanoparticles of amorphous calcium phosphate (NACP), and investigate mechanical properties and the inhibition of six species of periodontitis-related biofilms for the first time. METHODS Ethoxylated bisphenol A dimethacrylate (EBPADMA) and pyromellitic glycerol dimethacrylate (PMGDM) were mixed at 1:1 mass ratio to form the resin matrix. DMAHDM, NACP, and glass particles were incorporated at 3%, 20% and 50% by mass, respectively. Six species were tested: Porphyromonas gingivalis, Prevotella intermedia, Prevotella nigrescens, Aggregatibacter actinomycetemcomitans, Fusobacterium nucleatum and Enterococcus faecalis. Colony-forming units (CFU), live/dead assay, biomass via crystal violet staining, and polysaccharide production by biofilms were determined on composites. RESULT Adding 3% DMAHDM to composite did not affect the flexure strength and elastic modulus (p>0.1). For all six species of periodontal pathogens, the DMAHDM composite had biofilm CFU nearly three orders of magnitude less than that without DMAHDM. The killing efficacy of DMAHDM composite against the six species was: E. faecalis<F. nucleatum<P. nigrescens=P. intermedia<A. actinomycetemcomitans<P. gingivalis. Biofilm biomass and polysaccharide were also greatly reduced via DMAHDM (p<0.05). SIGNIFICANCE The novel nanocomposite containing DMAHDM and NACP showed strong inhibiting effect against all six species of periodontitis-related pathogens. This composite is promising for Class V restorations to restore root caries and combat periodontitis.
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Affiliation(s)
- Lin Wang
- VIP Integrated Department, Stomatological Hospital of Jilin University, Changchun, China; Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Mary A S Melo
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Michael D Weir
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Xianju Xie
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
| | - Mark A Reynolds
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Hockin H K Xu
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Department of Mechanical Engineering, University of Maryland Baltimore County, Baltimore County, MD 21250, USA.
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35
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Gulve N, Kimmerling K, Johnston AD, Krueger GR, Ablashi DV, Prusty BK. Anti-herpesviral effects of a novel broad range anti-microbial quaternary ammonium silane, K21. Antiviral Res 2016; 131:166-73. [PMID: 27181377 DOI: 10.1016/j.antiviral.2016.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/16/2016] [Accepted: 05/04/2016] [Indexed: 12/29/2022]
Abstract
We have created a novel quaternary ammonium silane, K21 through sol-gel chemistry, using an ethoxylated version of an organosilane quaternary ammonium compound and TetraEthyl Ortho Silicate (TEOS) as precursors. Previous studies using the precursor molecule quaternary ammonium compounds (QACs) and a methacryloxy version of K21, primarily designed for use in dental healthcare, have shown inhibited growth properties against several types of gram-positive and gram-negative bacteria including Escherichia coli, Streptococcus mutans, Actinomyces naeslundii and Candida albicans etc. Here we tested the effect of K21 on HSV-1, HHV-6A and HHV-7 in in vitro cell culture infection models. Our results show growth inhibitory effect of K21 on HSV-1, HHV-6A and HHV-7 infection.
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Affiliation(s)
- Nitish Gulve
- Biocenter, Chair of Microbiology, University of Würzburg, 97074 Würzburg, Germany
| | | | | | - Gerhard R Krueger
- Department of Pathology and Laboratory Medicine, UT-Houston Medical School, Houston, USA
| | | | - Bhupesh K Prusty
- Biocenter, Chair of Microbiology, University of Würzburg, 97074 Würzburg, Germany.
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Dominic GJ, Yashoda MP, Ajith Kumar MP, Prasannakumar S. Process of Making Antimicrobial Polymers from Quaternary Ammonium Maleic Di-Ester Surfmers and Methyl Methacrylate by Emulsion Polymerization. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/masy.201400264] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- G. John Dominic
- Department of Chemistry; Manipal Institute of Technology; Manipal University; Manipal, Udupi Karnataka 576104 India
| | - M. P. Yashoda
- Department of Chemistry; Manipal Institute of Technology; Manipal University; Manipal, Udupi Karnataka 576104 India
| | - M. P. Ajith Kumar
- Department of Chemistry; Manipal Institute of Technology; Manipal University; Manipal, Udupi Karnataka 576104 India
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Liu SY, Tonggu L, Niu LN, Gong SQ, Fan B, Wang L, Zhao JH, Huang C, Pashley DH, Tay FR. Antimicrobial activity of a quaternary ammonium methacryloxy silicate-containing acrylic resin: a randomised clinical trial. Sci Rep 2016; 6:21882. [PMID: 26903314 PMCID: PMC4763235 DOI: 10.1038/srep21882] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 02/03/2016] [Indexed: 12/30/2022] Open
Abstract
Quaternary ammonium methacryloxy silicate (QAMS)-containing acrylic resin demonstrated contact-killing antimicrobial ability in vitro after three months of water storage. The objective of the present double-blind randomised clinical trial was to determine the in vivo antimicrobial efficacy of QAMS-containing orthodontic acrylic by using custom-made removable retainers that were worn intraorally by 32 human subjects to create 48-hour multi-species plaque biofilms, using a split-mouth study design. Two control QAMS-free acrylic disks were inserted into the wells on one side of an orthodontic retainer, and two experimental QAMS-containing acrylic disks were inserted into the wells on the other side of the same retainer. After 48 hours, the disks were retrieved and examined for microbial vitality using confocal laser scanning microscopy. No harm to the oral mucosa or systemic health occurred. In the absence of carry-across effect and allocation bias (disks inserted in the left or right side of retainer), significant difference was identified between the percentage kill in the biovolume of QAMS-free control disks (3.73 ± 2.11%) and QAMS-containing experimental disks (33.94 ± 23.88%) retrieved from the subjects (P ≤ 0.001). The results validated that the QAMS-containing acrylic exhibits favourable antimicrobial activity against plaque biofilms in vivo. The QAMS-containing acrylic may also be used for fabricating removable acrylic dentures.
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Affiliation(s)
- Si-ying Liu
- School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Lige Tonggu
- University of Washington, School of Medicine, Department of Biological Structure, Seattle, Washington, USA
| | - Li-na Niu
- State Key Laboratory of Military Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Shi-qiang Gong
- Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Bing Fan
- School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Liguo Wang
- University of Washington, School of Medicine, Department of Biological Structure, Seattle, Washington, USA
| | - Ji-hong Zhao
- School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Cui Huang
- School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - David H. Pashley
- The Dental College of Georgia, Department of Endodontics, Augusta University, Augusta, Georgia, USA
| | - Franklin R. Tay
- The Dental College of Georgia, Department of Endodontics, Augusta University, Augusta, Georgia, USA
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Li H, Bao H, Bok KX, Lee CY, Li B, Zin MT, Kang L. High durability and low toxicity antimicrobial coatings fabricated by quaternary ammonium silane copolymers. Biomater Sci 2016; 4:299-309. [DOI: 10.1039/c5bm00353a] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Novel quaternary ammonium silane (QAS) antimicrobial copolymers with improved biocompatibility can form transparent and durable coatingsviaa thermal-curing process.
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Affiliation(s)
- Hairui Li
- Department of Pharmacy
- National University of Singapore
- Singapore 117543
- 3M Innovation Singapore
- Singapore 738205
| | | | - Ke Xin Bok
- Department of Pharmacy
- National University of Singapore
- Singapore 117543
| | | | - Bo Li
- 3M Innovation Singapore
- Singapore 738205
| | - Melvin T. Zin
- 3M Innovation Singapore
- Singapore 738205
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798
| | - Lifeng Kang
- Department of Pharmacy
- National University of Singapore
- Singapore 117543
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Covalent immobilization of lysozyme onto woven and knitted crimped polyethylene terephthalate grafts to minimize the adhesion of broad spectrum pathogens. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 58:78-87. [DOI: 10.1016/j.msec.2015.08.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/11/2015] [Accepted: 08/04/2015] [Indexed: 12/27/2022]
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40
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Makvandi P, Ghaemy M, Mohseni M. Synthesis and characterization of photo-curable bis-quaternary ammonium dimethacrylate with antimicrobial activity for dental restoration materials. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2015.11.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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41
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Effect of dimethylaminohexadecyl methacrylate mass fraction on fracture toughness and antibacterial properties of CaP nanocomposite. J Dent 2015; 43:1539-46. [PMID: 26404407 DOI: 10.1016/j.jdent.2015.09.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 09/15/2015] [Accepted: 09/18/2015] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES Biofilm acids contribute to secondary caries which is a reason for restoration failure. Previous studies synthesized nanoparticles of amorphous calcium phosphate (NACP) and dimethylaminohexadecyl methacrylate (DMAHDM). The objectives of this study were to develop DMAHMD-NACP nanocomposite for double benefits of antibacterial and remineralization capabilities, and investigate the DMAHMD mass fraction effects on fracture toughness and biofilm response of NACP nanocomposite for the first time. METHODS DMAHDM was incorporated into NACP nanocomposite at mass fractions of 0% (control), 0.75%, 1.5%, 2.25% and 3%. A single edge V-notched beam method was used to measure fracture toughness K(IC). A dental plaque microcosm biofilm model using human saliva as inoculum was used to measure the antibacterial properties of composites. RESULTS K(IC) was about 1 MPa×m(1/2) for all composite (mean±sd; n=6). Adding DMAHDM from 0% to 3% did not affect K(IC) (p>0.1). Lactic acid production by biofilms on composite containing 3% DMAHDM was reduced to less than 1% of that on composite control. Metabolic activity of adherent biofilms on composite containing 3% DMAHDM was reduced to 4% of that on composite control. Biofilm colony-forming unit (CFU) counts were reduced by three orders of magnitude on NACP nanocomposite containing 3% DMAHDM. CONCLUSIONS DMAHDM-NACP nanocomposite had good fracture resistance, strong antibacterial potency, and NACP for remineralization (shown in previous studies). The DMAHDM-NACP nanocomposite may be promising for caries-inhibiting dental restorations, and the method of using double agents (DMAHDM and NACP) may have a wide applicability to other dental materials including bonding agents and cements.
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A comblike polysiloxane with pendant quaternary ammonium polyether groups: its synthesis, physical properties and antibacterial performance. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0821-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Wu J, Weir MD, Melo MAS, Xu HHK. Development of novel self-healing and antibacterial dental composite containing calcium phosphate nanoparticles. J Dent 2015; 43:317-26. [PMID: 25625674 DOI: 10.1016/j.jdent.2015.01.009] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 01/06/2015] [Accepted: 01/19/2015] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVES Fracture and secondary caries are the primary reasons for dental restoration failure. The objective of this study was to develop a self-healing composite to heal cracks, while containing dimethylaminohexadecyl methacrylate (DMAHDM) for antibacterial function and nanoparticles of amorphous calcium phosphate (NACP) for remineralization. METHODS Microcapsules were synthesized with poly(urea-formaldehyde) (PUF) shells containing triethylene glycol dimethacrylate (TEGDMA) and N,N-dihydroxyethyl-p-toluidine (DHEPT) as healing liquid. Composite contained 20 mass% of NACP and 35% glass fillers. In addition, composite contained 0%, 2.5%, 5%, 7.5%, or 10% of microcapsules. A single edge V-notched beam method measured fracture toughness (KIC) and self-healing efficiency. A dental plaque microcosm biofilm model was used to test the antibacterial properties. RESULTS Incorporation of microcapsules up to 7.5% into the composite did not adversely affect the mechanical properties (p > 0.1). Successful self-healing was achieved, with KIC recovery of 65-81% (mean ± sd; n = 6) to regain the load-bearing capability after composite fracture. The self-healing DMAHDM-NACP composite displayed a strong antibacterial potency, inhibiting biofilm viability and lactic acid production, and reducing colony-forming units by 3-4 orders of magnitude, compared to control composite without DMAHDM. CONCLUSIONS A dental composite was developed with triple benefits of self-healing after fracture, antibacterial activity, and remineralization capability for the first time. CLINICAL SIGNIFICANCE The self-healing, antibacterial and remineralizing composite may be promising for tooth cavity restorations to combat bulk fracture and secondary caries. The method of using triple agents (self-healing microcapsules, DMAHDM, and NACP) may have wide applicability to other dental composites, adhesives, sealants and cements.
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Affiliation(s)
- Junling Wu
- Department of Prosthodontics, School of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Biomedicine, Jinan 250012, China; Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA
| | - Michael D Weir
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA
| | - Mary Anne S Melo
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA
| | - Hockin H K Xu
- Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA; Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Department of Mechanical Engineering, University of Maryland, Baltimore County, MD 21250, USA.
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Beigi Burujeny S, Atai M, Yeganeh H. Assessments of antibacterial and physico-mechanical properties for dental materials with chemically anchored quaternary ammonium moieties: thiol-ene-methacrylate vs. conventional methacrylate system. Dent Mater 2015; 31:244-61. [PMID: 25605414 DOI: 10.1016/j.dental.2014.12.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 11/09/2014] [Accepted: 12/16/2014] [Indexed: 01/18/2023]
Abstract
OBJECTIVE Fabrication of low shrinkage stress and strain dental resins containing highly available immobilized bactericidal moieties has been reported. The goal of this study is producing dental restorative materials with long-last antibacterial activity and reduced secondary caries. It is anticipated that antibacterial properties of quaternary ammonium moieties chemically immobilized in the backbone of dental resins is directly depended on accessibility of these functions. In the present study the antibacterial effect of a series of antibacterial monomers polymerized in a ternary thiol-ene-methacrylate system were compared with corresponding classical methacrylate system against Streptococcus mutans (an oral bacteria Strain). Physical and mechanical properties of dental materials obtained from these two systems were also evaluated and compared. METHODS The viscosities of the resin matrixes were measured on a MCR 300 rheometer. Degree of conversion (DC%) of monomers was measured using FTIR spectroscopy. The shrinkage-strain of photocured resins was measured using the bonded-disk technique. A universal testing machine combined with a stress measurement device was utilized to measure the polymerization-induced shrinkage stress. Viscoelastic properties of the samples were also determined by dynamic mechanical thermal analysis (DMTA). Assessment of antibacterial properties was performed through agar diffusion test (AD) to confirm non-release behavior of chemically anchored moieties. Quantitative assay of antibacterial activity was evaluated through direct contact test (DCT) against S. mutans. Direct contact cytotoxicity assay with fibroblast cell line L-929 was also performed to find more insight regarding cytotoxicity of the antibacterial matrixes. The data were analyzed and compared by ANOVA and Tukey HSD tests (significance level=0.05). RESULTS Neat methacrylate systems had significantly higher viscosity than thiol-ene-methacrylate analogous. The degree of conversion of methacrylate moieties in thiol-ene-methacrylate system was improved in comparison to conventional methacrylate system. Shrinkage stress and strain of thiol-ene-methacrylate system was lower than the neat methacrylate system. The thiol-ene-methacrylate systems show increased homogeneity and decreased glass transition temperature (Tg) and crosslink density (νc) in comparison to the neat methacrylate-based resins. The incorporated monofuctional quaternized monomer reduces degree of conversion, shrinkage stress and crosslink density of matrix. The results showed significant improvement in antibacterial activity and cytocompatibility of dental materials obtained from thiol-ene polymerization system. SIGNIFICANCE It was shown that with proper control of monomers molar ratio, significant improvement in antibacterial activity and cytocompatibility as well as acceptable mechanical properties can be attained for dental resins prepared through the application of thiol-ene polymerization methodology.
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Affiliation(s)
- Saeed Beigi Burujeny
- Iran Polymer and Petrochemical Institute, PO Box 14965-115, Tehran 1497713115, Iran
| | - Mohammad Atai
- Iran Polymer and Petrochemical Institute, PO Box 14965-115, Tehran 1497713115, Iran
| | - Hamid Yeganeh
- Iran Polymer and Petrochemical Institute, PO Box 14965-115, Tehran 1497713115, Iran.
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Liu WS, Wang CH, Sun JF, Hou GG, Wang YP, Qu RJ. Synthesis, characterization and antibacterial properties of dihydroxy quaternary ammonium salts with long chain alkyl bromides. Chem Biol Drug Des 2014; 85:91-7. [PMID: 25215430 DOI: 10.1111/cbdd.12427] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 08/14/2014] [Accepted: 08/26/2014] [Indexed: 11/30/2022]
Abstract
Five N-methyl-N-R-N,N-bis(2-hydroxyethyl) ammonium bromides (R = -benzyl (chloride, BNQAS), -dodecyl (C12QAS), -tetradecyl (C14QAS), -hexadecyl (C16QAS), -octadecyl (C18QAS)) were prepared based on N-methyldiethanolamine (MDEA) and halohydrocarbon. Five QAS were characterized by FTIR, NMR, and MS. BNQAS, C12QAS, C14QAS, and C16QAS were confirmed by X-ray single-crystal diffraction. Their antibacterial properties indicated good antibacterial abilities against E. coli, S. aureus, B. subtilis, especially C12QAS with the best antibacterial ability (100% to E. coli, 95.65% to S. aureus, and 91.41% to B. subtilis). In addition, C12QAS also displayed the best antifungal activities than BNQAS and C18QAS against Cytospora mandshurica, Botryosphaeria ribis, Physalospora piricola, and Glomerella cingulata with the ratio of full marks. The strategy provides a facile way to design and develop new types of antibacterial drugs for application in preventing the fruit rot, especially apple.
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Affiliation(s)
- Wen-Shuai Liu
- School of Pharmacy, Binzhou Medical University, Yantai, 264003, China
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Ge X, Ye Q, Song L, Misra A, Spencer P. Synthesis and evaluation of novel siloxane-methacrylate monomers used as dentin adhesives. Dent Mater 2014; 30:1073-87. [PMID: 24993811 DOI: 10.1016/j.dental.2014.06.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 05/07/2014] [Accepted: 06/09/2014] [Indexed: 11/17/2022]
Abstract
OBJECTIVES The objectives of this study were to synthesize two new siloxane-methacrylate (SM) monomers for application in dentin adhesives and to investigate the influence of different functionality of the siloxane-containing monomers on the adhesive photopolymerization, water sorption, and mechanical properties. METHODS Two siloxane-methacrylate monomers (SM1 and SM2) with four and eight methacrylate groups were synthesized. Dentin adhesives containing BisGMA, HEMA and the siloxane-methacrylate monomers were photo-polymerized. The experimental adhesives were compared with the control adhesive (HEMA/BisGMA, 45/55, w/w) and characterized with regard to degree of conversion (DC), water miscibility of the liquid resin, water sorption and dynamic mechanical analysis (DMA). RESULTS The experimental adhesives exhibited improved water miscibility as compared to the control. When cured in the presence of 12 wt% water to simulate the wet environment of the mouth, the SM-containing adhesives showed DC comparable to the control. The experimental adhesives showed higher rubbery modulus than the control under dry conditions. Under wet conditions, the mechanical properties of the formulations containing SM monomer with increased functionality were comparable with the control, even with more water sorption. SIGNIFICANCE The concentration and functionality of the newly synthesized siloxane-methacrylate monomers affected the water miscibility, water sorption and mechanical properties of the adhesives. The experimental adhesives show improved water compatibility compared with the control. The mechanical properties were enhanced with an increase of the functionality of the siloxane-containing monomers. The results provide critical structure/property relationships and important information for future development of durable, versatile siloxane-containing dentin adhesives.
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Affiliation(s)
- Xueping Ge
- Bioengineering Research Center, School of Engineering, University of Kansas, Lawrence, KS, USA
| | - Qiang Ye
- Bioengineering Research Center, School of Engineering, University of Kansas, Lawrence, KS, USA.
| | - Linyong Song
- Bioengineering Research Center, School of Engineering, University of Kansas, Lawrence, KS, USA
| | - Anil Misra
- Department of Civil Engineering, University of Kansas, Lawrence, KS, USA
| | - Paulette Spencer
- Bioengineering Research Center, School of Engineering, University of Kansas, Lawrence, KS, USA; Department of Mechanical Engineering, University of Kansas, Lawrence, KS, USA.
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One-pot synthesis of antibacterial monomers with dual biocidal modes. J Dent 2014; 42:1078-95. [PMID: 24930871 DOI: 10.1016/j.jdent.2014.06.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 05/27/2014] [Accepted: 06/03/2014] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES The present study reported a method for preparing a blend of antibacterial quaternary ammonium silanes and quaternary ammonium methacryloxy silane (QAMS) based on the sol-gel reaction between dimethyldiethoxy silane and two trialkoxysilanes, one with an antibacterial quaternary ammonium functionality and the other with a methacryloxy functionality. METHODS Reaction products of the sol-gel reaction were characterised by direct infusion mass spectrometry, FTIR and proton, carbon and silicon NMR. This blend of monomers was incorporated into an experimental universal adhesive for evaluation of antimicrobial activity against Streptococcus mutans biofilms, microtensile bond strength and cytotoxicty. Retention of quaternary ammonium species on polymerised adhesive, leaching of these species from the adhesive and the ability of resin-dentine interfaces to inhibit S. mutans biofilms were evaluated over a 3-month water-ageing period. RESULTS The antibacterial adhesive version killed bacteria in S. mutans biofilms not only through the release of non-copolymerisable quaternary ammonium silane species (release-killing), but also via immobilised quaternary ammonium methacryloxy silane that are copolymerised with adhesive resin comonomers (contact-killing). Contact-killing was retained after water-ageing. The QAMS-containing universal adhesive has similar tensile bond strength as the control and two commercially available universal adhesives, when it was used for bonding to dentine in the etch-and-rinse mode and self-etching mode. Incorporation of the antimicrobial quaternary ammonium species blend did not adversely affect the cytotoxicity of the universal adhesive formulation. CONCLUSIONS Instead of using quaternary ammonium dimethacrylates and nanosilver, an alternative bimodal antimicrobial strategy for formulating antimicrobial universal dentine adhesives is achieved using the one-pot sol-gel synthesis scheme. CLINICAL SIGNIFICANCE The QAMS containing universal dentine adhesives with dual antimicrobial activity is a promising material aimed at preventing second caries and prolonging the longevity of resin composite restorations.
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Kregiel D. Advances in biofilm control for food and beverage industry using organo-silane technology: A review. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.11.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Synthesis of dimethyldodecyl quaternary ammonium polyether polysiloxane and its film morphology and performance on fabrics. J Appl Polym Sci 2014. [DOI: 10.1002/app.40612] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Gong SQ, Epasinghe DJ, Zhang W, Zhou B, Niu LN, Ryou H, Eid AA, Frassetto A, Yiu CKY, Arola DD, Mao J, Pashley DH, Tay FR. Synthesis of antimicrobial silsesquioxane–silica hybrids by hydrolytic co-condensation of alkoxysilanes. Polym Chem 2014. [DOI: 10.1039/c3py00635b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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