1
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Zhou Y, Shen Z, Xu Y, Qian XN, Chen W, Qiu J. Antimicrobial efficiency and cytocompatibility of resveratrol and naringin as chemical decontaminants on SLA surface. Microbiol Spectr 2024:e0367923. [PMID: 39240122 DOI: 10.1128/spectrum.03679-23] [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: 10/15/2023] [Accepted: 07/23/2024] [Indexed: 09/07/2024] Open
Abstract
Bacterial biofilms are the major etiology agent of peri-implant disease. Chemical decontamination is a promising treatment strategy against bacterial biofilms; however, its applications are limited by its low efficiency and poor biocompatibility. In contrast to three conventional cleaners (sterile saline, hydrogen peroxide, and chlorhexidine), this study used resveratrol and naringin solutions to remove mature Staphylococcus aureus and Porphyromonas gingivalis biofilm on sandblasted (with large grit and acid-etched (SLA) titanium surface. To determine changes in surface characteristics, the surface wettability and roughness were measured, and micromorphology was observed by scanning electron microscopy. With crystal violet (CV) and live/dead bacterial staining, residual plaque quantity and composition were measured. The biocompatibility was tested using pH and cytotoxicity, as well as by osteoblasts (MC3T3-E1) adhesion, proliferation, and differentiation, and fibroblasts (L-929) proliferation were also analyzed. It was found that resveratrol and naringin solutions were more effective in restoring surface characteristics and also showed that less plaque and viable bacteria were left. Naringin removed S. aureus biofilms better than chlorhexidine. Alkaline resveratrol and naringin solutions increased cell adhesion, proliferation, and osteogenic differentiation without any cytotoxicity. Resveratrol increased the expression of mRNA and protein associated with osteogenesis. In conclusion, resveratrol and naringin effectively restored SLA titanium surface characteristics and decontaminated the biofilm with good biocompatibility, suggesting their therapeutic potential as chemical decontaminants. IMPORTANCE Bacterial biofilms are considered the primary etiology of peri-implant disease. Physical cleaning is the most common way to remove bacterial biofilm, but it can cause grooving, melting, and deposition of chemicals that alter the surface of implants, which may hamper biocompatibility and re-osseointegration. Chemical decontamination is one of the most promising treatments but is limited by low efficiency and poor biocompatibility. Our study aims to develop safer, more effective chemical decontaminants for peri-implant disease prevention and treatment. We focus on resveratrol and naringin, two natural compounds, which have shown to be more effective in decontaminating biofilms on dental implant surfaces and exerting better biocompatibility. This research is groundbreaking as it is the first exploration of natural plant extracts' impact on mature bacterial biofilms on rough titanium surfaces. By advancing this knowledge, we seek to contribute to more effective and biocompatible strategies for combating peri-implant diseases, enhancing oral health, and prolonging implant lifespan.
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Affiliation(s)
- You Zhou
- Department of Oral Implantology, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Zhe Shen
- Department of Oral Implantology, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing, China
| | - Yan Xu
- Department of Oral Implantology, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing, China
| | - Xin-Na Qian
- Department of Oral Implantology, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing, China
| | - Wei Chen
- Department of Oral Implantology, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing, China
| | - Jing Qiu
- Department of Oral Implantology, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
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2
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Niu Z, Sun Y, Yang Y, Wang Z, Wen Y. Self-synthesized TiO 2 nanoparticles-pH-mediated dispersive solid phase extraction coupled with high performance liquid chromatography for the determination of quinolones in biological matrices. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2022; 57:656-666. [PMID: 35880484 DOI: 10.1080/10934529.2022.2101340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
A simple and efficient pH-mediated dispersive solid phase extraction (dSPE) based on terbium doped titanium dioxide nanoparticles (TiO2-Tb NPs) combined with high performance liquid chromatography (HPLC) has been firstly developed for the determination of quinolones (QNs) in various biological samples. The adsorption kinetics and isotherms were investigated to indicate that the kinetic and equilibrium adsorption were well-described by pseudo-second order kinetic and Henry, Langmuir isotherm model, respectively. The parameters influencing the extraction performance were systematically investigated. The QNs are transferred into TiO2-Tb NPs in the first step at pH = 6.0 and eluted into acidic aqueous phase at pH = 2.5 in the second step. Under the optimum extraction and determination conditions, a linearity range with the coefficient of determination (R2) from 0.9977 to 0.9991 were obtained in a range of 10-10,000 ng mL-1. The limits of detection (LODs) based on a signal-to-noise ratio of 3 were 3.3 ng mL-1. The recoveries of the three QNs in human urine, rabbit plasma and serum samples ranged from 69.3% to 117.6%, with standard deviations ranging from 2.4% to 9.9%. Therefore, this pH-mediated dSPE-HPLC method exhibited the advantages of remarkable sensitivity, ease of operation, rapidity, low cost and environmental friendliness.
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Affiliation(s)
- Zongliang Niu
- Laboratory of Pathogenic Biology and Immunology, School of Basic Medicine and Life Science, Hainan Medical University, Haikou, China
| | - Yiqing Sun
- Department of Environmental Science, School of Tropical Medicine, Hainan Medical University, Haikou, China
| | - Ying Yang
- Department of Environmental Science, School of Tropical Medicine, Hainan Medical University, Haikou, China
| | - Zhencui Wang
- Department of Environmental Science, School of Tropical Medicine, Hainan Medical University, Haikou, China
| | - Yingying Wen
- Department of Environmental Science, School of Tropical Medicine, Hainan Medical University, Haikou, China
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, NHC Key Laboratory of Tropical Disease Control, Hainan Medical University, Haikou, China
- Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou, China
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3
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Ganonyan N, Bar G, Gvishi R, Avnir D. Gradual hydrophobization of silica aerogel for controlled drug release. RSC Adv 2021; 11:7824-7838. [PMID: 35423309 PMCID: PMC8695093 DOI: 10.1039/d1ra00671a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 02/10/2021] [Indexed: 12/01/2022] Open
Abstract
We report on the successful fine-tuning of silica aerogel hydrophobicity, through a gas-phase surface modification process. Aerogel hydrophobicity is a widely discussed matter, as it contributes to the aerogel's preservation and determines its functionality. Still, a general procedure for tuning the hydrophobicity, without affecting other aerogel properties was missing. In the developed procedure, silica aerogel was modified with trimethylchlorosilane vapor for varying durations, resulting in gradual hydrophobicity, determined by solid-state NMR and contact angle measurements. The generality of this post-synthesis treatment allows its application on a variety of aerogel materials, while having minimum effect on their porosity and transparency. We demonstrate the applicability of the gradual hydrophobization by tuning drug release rates from the silica aerogel. Two chlorhexidine salts - widely employed as antiseptic agents - were used as model drugs, one representing a soluble drug, and the other an insoluble drug; they were entrapped in silica aerogel, following hydrophobization to varying degrees. The drug release patterns showed that depending on the degree, hydrophobization can increase or decrease release kinetics, compared to the unmodified aerogel. This arises from the effect of the hydrophobic degree on pore structure, diffusional rates and wetting of the aerogel carrier. We suggest the use of the gradual hydrophobization process for other drug-aerogel systems, as well as for other aerogel applications, such as transparent insulation panels, contaminate sorbents or catalysis supports.
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Affiliation(s)
- Nir Ganonyan
- Institute of Chemistry, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem Jerusalem 9190401 Israel
| | - Galit Bar
- Applied Physics Division, Soreq Nuclear Research Center Yavne 8180000 Israel
| | - Raz Gvishi
- Applied Physics Division, Soreq Nuclear Research Center Yavne 8180000 Israel
| | - David Avnir
- Institute of Chemistry, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem Jerusalem 9190401 Israel
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4
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Xu Z, Coriand L, Loeffler R, Geis-Gerstorfer J, Zhou Y, Scheideler L, Fleischer M, Gehring FK, Rupp F. Saliva-coated titanium biosensor detects specific bacterial adhesion and bactericide caused mass loading upon cell death. Biosens Bioelectron 2019; 129:198-207. [PMID: 30721795 DOI: 10.1016/j.bios.2019.01.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/07/2019] [Accepted: 01/13/2019] [Indexed: 12/11/2022]
Abstract
Bacteria adhering to implanted medical devices can cause invasive microbial infections, of e.g. skin, lung or blood. In dentistry, Streptococcus gordonii is an early oral colonizer initiating dental biofilm formation and also being involved in life-threatening infective endocarditis. To treat oral biofilms, antibacterial mouth rinses are commonly used. Such initial biomaterial-bacteria interactions and the influence of antibacterial treatments are poorly understood and investigated here in situ by quartz crystal microbalance with dissipation monitoring (QCM-D). A saliva-coated titanium (Ti) biosensor is applied to analyze possible specific signal patterns indicating microbial binding mechanisms and bactericide-caused changes in bacterial film rigidity or cell leakage caused by a clinically relevant antibacterial agent (ABA), i.e., a mouth rinse comprising chlorhexidine (CHX) and cetylpyridinium chloride (CPC). Apparent missing mass effects during the formation of microscopically proven dense and vital bacterial films indicate punctual, specific binding of S. gordonii to the saliva-coated biosensor, compared to unspecific adhesion to pure Ti. Coincidentally to ABA-induced killing of surface-adhered bacteria, an increase of adsorbed dissipative mass can be sensed, contrary to the prior mass-loss. This suggests the acoustic sensing of the leakage of cellular content caused by bacterial cell wall rupturing and membrane damage upon the bactericidal attack. The results have significant implications for testing bacterial adhesion mechanisms and cellular integrity during interaction with antibacterial agents.
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Affiliation(s)
- Zeqian Xu
- University Hospital Tübingen, Section Medical Materials Science & Technology, Osianderstr. 2-8, D-72076 Tübingen, Germany; The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan 430079, PR China
| | - Luisa Coriand
- Fraunhofer Institute for Applied Optics and Precision Engineering, Albert-Einstein-Strasse 7, D-07745 Jena, Germany
| | - Ronny Loeffler
- Core Facility LISA(+), Eberhard Karls University Tübingen, Auf der Morgenstelle 15, D-72076 Tübingen, Germany
| | - Juergen Geis-Gerstorfer
- University Hospital Tübingen, Section Medical Materials Science & Technology, Osianderstr. 2-8, D-72076 Tübingen, Germany
| | - Yi Zhou
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan 430079, PR China
| | - Lutz Scheideler
- University Hospital Tübingen, Section Medical Materials Science & Technology, Osianderstr. 2-8, D-72076 Tübingen, Germany
| | - Monika Fleischer
- Core Facility LISA(+), Eberhard Karls University Tübingen, Auf der Morgenstelle 15, D-72076 Tübingen, Germany
| | | | - Frank Rupp
- University Hospital Tübingen, Section Medical Materials Science & Technology, Osianderstr. 2-8, D-72076 Tübingen, Germany.
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Bellis CA, Addison O, Nobbs AH, Duckworth PF, Holder JA, Barbour ME. Glass ionomer cements with milled, dry chlorhexidine hexametaphosphate filler particles to provide long-term antimicrobial properties with recharge capacity. Dent Mater 2018; 34:1717-1726. [PMID: 30249499 PMCID: PMC6280122 DOI: 10.1016/j.dental.2018.09.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 09/10/2018] [Accepted: 09/10/2018] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Glass ionomer cements (GICs) are a versatile material, offering the opportunity for ion exchange with the oral environment. The aim of this study was to develop a GIC that delivers a controlled, rechargeable dose of chlorhexidine (CHX) over an extended period without compromising mechanical properties. METHODS GICs were supplemented with finely milled particles of chlorhexidine hexametaphosphate (CHX-HMP). CHX release into artificial saliva was measured over 660 days, and recharge with CHX and CHX-HMP was investigated. Mechanical properties were investigated, and an agar diffusion test was carried out to assess antimicrobial properties using Streptococcus mutans and Scardovia wiggsiae. RESULTS Dose-dependent CHX release was observed, and this was ongoing at 660 days. Compared with related studies of GICs containing CHX-HMP, the fine, dry particles resulted in fewer adverse effects on mechanical properties, including tensile, compressive and biaxial flexural strength, with 1% CHX-HMP GICs indistinguishable from control specimens. The GICs could be recharged with CHX using both a conventional CHX digluconate solution comparable to commercial mouthrinses, and a suspension of CHX-HMP of equivalent concentration. Recharging with CHX digluconate increased subsequent CHX release by 50% compared with no recharge, and recharging with CHX-HMP increased subsequent CHX release by 100% compared with no recharge. The GICs inhibited growth of St. mutans and Sc. wiggsiae in a simple agar diffusion model. SIGNIFICANCE These materials, which provide sustained CHX release over clinically relevant timescales, may find application as a restorative material intended to inhibit secondary caries as well as in temporary restorations and fissure sealants.
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Affiliation(s)
- Candice A Bellis
- Oral Nanoscience, Bristol Dental School, University of Bristol, UK
| | - Owen Addison
- School of Dentistry, University of Birmingham, UK
| | - Angela H Nobbs
- Oral Microbiology, Bristol Dental School, University of Bristol, UK
| | - Peter F Duckworth
- Oral Nanoscience, Bristol Dental School, University of Bristol, UK; ACCIS, University of Bristol, UK
| | - James A Holder
- Oral Nanoscience, Bristol Dental School, University of Bristol, UK; Kemdent, Purton, UK
| | - Michele E Barbour
- Oral Nanoscience, Bristol Dental School, University of Bristol, UK; Pertinax Pharma Ltd., Bristol, UK.
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6
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Matthes R, Duske K, Kebede TG, Pink C, Schlüter R, von Woedtke T, Weltmann KD, Kocher T, Jablonowski L. Osteoblast growth, after cleaning of biofilm-covered titanium discs with air-polishing and cold plasma. J Clin Periodontol 2017; 44:672-680. [PMID: 28303583 DOI: 10.1111/jcpe.12720] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2017] [Indexed: 12/21/2022]
Abstract
AIM To investigate the effects of a combined biofilm removal with an optimized air polishing and a cold plasma device on cells in vitro. MATERIALS AND METHODS A 7-day-old biofilm was removed from rough titanium discs with an air-polishing device with erythritol powder (AP) or with a cold atmospheric pressure argon plasma (CAP) device or in combination of both (AP + CAP). The removal efficacy was evaluated by subsequent cell seeding of osteoblast-like cells (MG-63). The cell spreading was analysed after 5 days of incubation by scanning electron microscopy. Separately, the surface hydrophilicity was analysed by measuring the water contact angle (WCA) of the disc for each treatment method. RESULTS The mechanical plaque removal with AP rendered specimen conducive for cell growth, 85% of the surface was covered with cells. An advantage of the combination of AP + CAP was not detectable compared to AP (cell coverage ranged from 57% up to 75%). After sole CAP treatment, microorganisms re-grew and destroyed all cells. The WCA was reduced by all treatment methods. CONCLUSION An AP treatment has the potential to remove biofilm from rough implant surfaces completely. In contrast to our hypothesis, the combination of plasma and AP treatment did not enhance osteoblast spreading.
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Affiliation(s)
- Rutger Matthes
- Unit of Periodontology, Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pedodontics, Dental School, University Medicine Greifswald, Greifswald, Germany
| | - Kathrin Duske
- Department of Cell Biology, University Medical Centre of Rostock, Rostock, Germany
| | - Tewodros Getachew Kebede
- Unit of Periodontology, Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pedodontics, Dental School, University Medicine Greifswald, Greifswald, Germany
| | - Christiane Pink
- Unit of Periodontology, Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pedodontics, Dental School, University Medicine Greifswald, Greifswald, Germany
| | - Rabea Schlüter
- Institute of Microbiology, University of Greifswald, Greifswald, Germany
| | - Thomas von Woedtke
- Leibniz-Institute for Plasma Science and Technology e.V., Greifswald, Germany.,Department of Hygiene and Environmental Medicine, University Medicine Greifswald, Greifswald, Germany
| | | | - Thomas Kocher
- Unit of Periodontology, Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pedodontics, Dental School, University Medicine Greifswald, Greifswald, Germany
| | - Lukasz Jablonowski
- Unit of Periodontology, Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pedodontics, Dental School, University Medicine Greifswald, Greifswald, Germany.,Leibniz-Institute for Plasma Science and Technology e.V., Greifswald, Germany
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7
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Xue C, Song X, Liu M, Ai F, Liu M, Shang Q, Shi X, Li F, He X, Xie L, Chen T, Xin H, Wang X. A highly efficient, low-toxic, wide-spectrum antibacterial coating designed for 3D printed implants with tailorable release properties. J Mater Chem B 2017; 5:4128-4136. [DOI: 10.1039/c7tb00478h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A broad spectrum antibacterial coatings with tailorable release properties were developed for 3D printed implants.
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8
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Barros J, Grenho L, Fontenente S, Manuel CM, Nunes OC, Melo LF, Monteiro FJ, Ferraz MP. Staphylococcus aureusandEscherichia colidual-species biofilms on nanohydroxyapatite loaded with CHX or ZnO nanoparticles. J Biomed Mater Res A 2016; 105:491-497. [DOI: 10.1002/jbm.a.35925] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 09/14/2016] [Accepted: 10/03/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Joana Barros
- FEUP - Faculdade de Engenharia, Departamento de Engenharia Metalúrgica e Materiais; Universidade do Porto; Portugal
- i3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Portugal
- INEB - Instituto de Engenharia Biomédica; Universidade do Porto; Portugal
| | - Liliana Grenho
- FEUP - Faculdade de Engenharia, Departamento de Engenharia Metalúrgica e Materiais; Universidade do Porto; Portugal
- i3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Portugal
- INEB - Instituto de Engenharia Biomédica; Universidade do Porto; Portugal
| | - Sílvia Fontenente
- i3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Portugal
- IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto; Portugal
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Departamento de Engenharia Química; Universidade do Porto; Portugal
| | - Cândida M. Manuel
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Departamento de Engenharia Química; Universidade do Porto; Portugal
- ULP-Universidade Lusófona do Porto; Portugal
| | - Olga C. Nunes
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Departamento de Engenharia Química; Universidade do Porto; Portugal
| | - Luís F. Melo
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Departamento de Engenharia Química; Universidade do Porto; Portugal
| | - Fernando J. Monteiro
- FEUP - Faculdade de Engenharia, Departamento de Engenharia Metalúrgica e Materiais; Universidade do Porto; Portugal
- i3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Portugal
- INEB - Instituto de Engenharia Biomédica; Universidade do Porto; Portugal
| | - Maria P. Ferraz
- FP-ENAS/CEBIMED; University Fernando Pessoa Energy, Environment and Health Research Unit/Biomedical Research Center; Porto Portugal
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9
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Bellis CA, Nobbs AH, O’Sullivan DJ, Holder JA, Barbour ME. Glass ionomer cements functionalised with a concentrated paste of chlorhexidine hexametaphosphate provides dose-dependent chlorhexidine release over at least 14 months. J Dent 2016; 45:53-8. [DOI: 10.1016/j.jdent.2015.12.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 12/07/2015] [Accepted: 12/30/2015] [Indexed: 12/01/2022] Open
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10
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HIRANO Y, OHSHIMA Y, KOMATA M, OHTSU N. Analytical Procedure for the Accurate Determination of Ag, Cu and Ni in a Phosphate Buffered Saline Solution Using GF-AAS. BUNSEKI KAGAKU 2016. [DOI: 10.2116/bunsekikagaku.65.457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yuma HIRANO
- Graduate School of Materials Science and Engineering, Kitami Institute of Technology
| | - Yuki OHSHIMA
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology
| | - Masashi KOMATA
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology
| | - Naofumi OHTSU
- Instrument Analysis Center, Kitami Institute of Technology
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11
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Potential role of engineered nanoparticles as contaminant carriers in aquatic ecosystems: Estimating sorption processes of the cyanobacterial toxin microcystin-LR by TiO2 nanoparticles. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.06.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Barros J, Grenho L, Fernandes M, Manuel C, Melo L, Nunes O, Monteiro F, Ferraz M. Anti-sessile bacterial and cytocompatibility properties of CHX-loaded nanohydroxyapatite. Colloids Surf B Biointerfaces 2015; 130:305-14. [DOI: 10.1016/j.colsurfb.2015.04.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 04/08/2015] [Accepted: 04/14/2015] [Indexed: 02/01/2023]
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13
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Wood NJ, Jenkinson HF, Davis SA, Mann S, O’Sullivan DJ, Barbour ME. Chlorhexidine hexametaphosphate nanoparticles as a novel antimicrobial coating for dental implants. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:201. [PMID: 26123234 PMCID: PMC4486094 DOI: 10.1007/s10856-015-5532-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 06/20/2015] [Indexed: 06/04/2023]
Abstract
Dental implants are an increasingly popular solution to missing teeth. Implants are prone to colonisation by pathogenic oral bacteria which can lead to inflammation, destruction of bone and ultimately implant failure. The aim of this study was to investigate the use of chlorhexidine (CHX) hexametaphosphate (HMP) nanoparticles (NPs) with a total CHX concentration equivalent to 5 mM as a coating for dental implants. The CHX HMP NPs had mean diameter 49 nm and composition was confirmed showing presence of both chlorine and phosphorus. The NPs formed micrometer-sized aggregated surface deposits on commercially pure grade II titanium substrates following immersion-coating for 30 s. When CHX HMP NP-coated titanium specimens were immersed in deionised water, sustained release of soluble CHX was observed, both in the absence and presence of a salivary pellicle, for the duration of the study (99 days) without reaching a plateau. Control specimens exposed to a solution of aqueous 25 µM CHX (equivalent to the residual aqueous CHX present with the NPs) did not exhibit CHX release. CHX HMP NP-coated surfaces exhibited antimicrobial efficacy against oral primary colonising bacterium Streptococcus gordonii within 8 h. The antimicrobial efficacy was greater in the presence of an acquired pellicle which is postulated to be due to retention of soluble CHX by the pellicle.
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Affiliation(s)
- Natalie J. Wood
- />Oral Nanoscience, School of Oral & Dental Sciences, University of Bristol, Bristol, UK
- />Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol, UK
- />Bristol Centre for Functional Nanomaterials, University of Bristol, Bristol, UK
| | - Howard F. Jenkinson
- />Oral Microbiology, School of Oral & Dental Sciences, University of Bristol, Bristol, UK
| | - Sean A. Davis
- />Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol, UK
| | - Stephen Mann
- />Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol, UK
| | - Dominic J. O’Sullivan
- />Oral Nanoscience, School of Oral & Dental Sciences, University of Bristol, Bristol, UK
| | - Michele E. Barbour
- />Oral Nanoscience, School of Oral & Dental Sciences, University of Bristol, Bristol, UK
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14
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Garner S, Barbour ME. Nanoparticles for controlled delivery and sustained release of chlorhexidine in the oral environment. Oral Dis 2015; 21:641-4. [DOI: 10.1111/odi.12328] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 02/04/2015] [Accepted: 02/09/2015] [Indexed: 11/29/2022]
Affiliation(s)
- S Garner
- Oral Nanoscience; School of Oral and Dental Sciences; University of Bristol; Bristol UK
| | - ME Barbour
- Oral Nanoscience; School of Oral and Dental Sciences; University of Bristol; Bristol UK
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15
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Garner SJ, Nobbs AH, McNally LM, Barbour ME. An antifungal coating for dental silicones composed of chlorhexidine nanoparticles. J Dent 2015; 43:362-72. [DOI: 10.1016/j.jdent.2014.12.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 11/25/2014] [Accepted: 12/07/2014] [Indexed: 11/29/2022] Open
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Ridley MK, Machesky ML, Kubicki JD. Experimental study of strontium adsorption on anatase nanoparticles as a function of size with a density functional theory and CD model interpretation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:703-713. [PMID: 25517626 DOI: 10.1021/la503932e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The effect of particle size on the adsorption of Sr(2+) onto monodisperse nanometer diameter (4, 20, and 40 nm) anatase samples has been evaluated quantitatively with macroscopic experimental studies. The adsorption of Sr(2+) onto the anatase particles was evaluated by potentiometric titrations in NaCl media, at two ionic strengths (0.03 and 0.3 m), and over a wide range of pH (3-11) and surface loadings, at a temperature of 25 °C. Adsorption of Sr(2+) to the surface of the 20 and 40 nm diameter samples was similar, whereas the Sr(2+) adsorption titration curves were shallower for the 4 nm diameter samples. At high pH, the smallest particles adsorbed slightly less Sr(2+) than was adsorbed by the larger particles. At the molecular scale, density functional theory (DFT) calculations were used to evaluate the most stable Sr(2+) surface species on the (101) anatase surface (the predominant crystal face). An inner-sphere Sr-tridentate surface species was found to be the most stable. The experimental data were described with a charge distribution (CD) and multisite complexation (MUSIC) model, with a Basic Stern layer description of the electric double layer. The resulting surface complexation model explicitly incorporated the molecular-scale information from the DFT simulation results. For 20 and 40 nm diameter anatase, the CD value for the Sr-tridentate species was calculated using a bond valence interpretation of the DFT-optimized geometry. The CD value for the 4 nm sample was smaller than that for the 20 and 40 nm samples, reflecting the shallower Sr(2+) adsorption titration curves. The adsorption differences between the smallest and larger anatase particles can be rationalized by water being more highly structured near the 4 nm anatase sample and/or the Sr-tridentate surface species may require more well-developed surface terraces than are present on the 4 nm particles.
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Affiliation(s)
- Moira K Ridley
- Department of Geosciences, Texas Tech University , Lubbock, Texas 79409-1053, United States
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Corrosion kinetics and topography analysis of Ti–6Al–4V alloy subjected to different mouthwash solutions. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 43:1-10. [DOI: 10.1016/j.msec.2014.06.033] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 05/30/2014] [Accepted: 06/30/2014] [Indexed: 11/18/2022]
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Das R, Sarkar S, Chakraborty S, Choi H, Bhattacharjee C. Remediation of Antiseptic Components in Wastewater by Photocatalysis Using TiO2 Nanoparticles. Ind Eng Chem Res 2014. [DOI: 10.1021/ie403817z] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ranjana Das
- Chemical
Engineering Department, Jadavpur University, Kolkata, 700032, India
| | - Santanu Sarkar
- Chemical
Engineering Department, Jadavpur University, Kolkata, 700032, India
| | - Sudip Chakraborty
- Chemical
Engineering Department, Jadavpur University, Kolkata, 700032, India
| | - Heechul Choi
- School
of Environmental Science and Engineering, Gwangju Institute of Science
and Technology (GIST), 261 Cheomdan-gwagiro, 1 Oryong-dong, Buk-gu, Gwangju 500-712, Republic of Korea
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Titanium as a Reconstruction and Implant Material in Dentistry: Advantages and Pitfalls. MATERIALS 2012. [PMCID: PMC5449026 DOI: 10.3390/ma5091528] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Commercial pure titanium (cpTi) has been the material of choice in several disciplines of dentistry due to its biocompatibility, resistance to corrosion and mechanical properties. Despite a number of favorable characteristics, cpTi as a reconstruction and oral implant material has several shortcomings. This paper highlights current knowledge on material properties, passive oxidation film formation, corrosion, surface activation, cell interactions, biofilm development, allergy, casting and machining properties of cpTi for better understanding and potential improvement of this material for its clinical applications.
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Surface Engineering for Bone Implants: A Trend from Passive to Active Surfaces. COATINGS 2012. [DOI: 10.3390/coatings2030095] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Cortizo MC, Oberti TG, Cortizo MS, Cortizo AM, Fernández Lorenzo de Mele MA. Chlorhexidine delivery system from titanium/polybenzyl acrylate coating: evaluation of cytotoxicity and early bacterial adhesion. J Dent 2012; 40:329-37. [PMID: 22305778 DOI: 10.1016/j.jdent.2012.01.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 01/16/2012] [Accepted: 01/17/2012] [Indexed: 01/23/2023] Open
Abstract
OBJECTIVES The formation of biofilms on titanium dental implants is one of the main causes of failure of these devices. Streptococci are considered early colonizers that alter local environment favouring growing conditions for other colonizers. Chlorhexidine (CHX) is so far the most effective antimicrobial treatment against a wide variety of Gram-positive and Gram-negative organisms as well as fungi. This study was designed to develop a CHX delivery system appropriate for healing caps and abutments, with suitable drug release rate, effective as antimicrobial agent, and free of cytotoxic effects. METHODS Polybenzyl acrylate (PBA) coatings with and without CHX (Ti/PBA and Ti/PBA-CHX, respectively) and different drug loads (0.35, 0.70, and 1.40%, w/w) were assayed. The cytotoxic effect of CHX released from the different substrates on UMR106 cells was tested by alkaline phosphatase specific activity (ALP), and microscopic evaluation of the cells. Non-cytotoxic drug load (0.35%, w/w) was selected to evaluate the antimicrobial effectiveness of the system using a microbial consortium of Streptococcus species. RESULTS The kinetic profile of CHX delivered by Ti/PBA-CHX showed an initial fast release rate followed by a monotonic increase of delivered mass over 48 h. The number of attached bacteria decreased in the following order: Ti>Ti/PBA>Ti/PBA-0.35. CONCLUSIONS PBA-0.35 coating is effective to inhibit the adhesion of early colonizers on Ti without any cytotoxic effect on UMR-106 cells.
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Affiliation(s)
- María C Cortizo
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET, CCT-La Plata, 1900 La Plata, Argentina
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Chen Y, Li W, Zhang X. Adsorption behavior of carboxymethyl starch on titanium dioxide surfaces. COLLOID JOURNAL 2011. [DOI: 10.1134/s1061933x11020189] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Shi M, Su W, Matsui H. PbSe nanocrystal growth as nanocubes and nanorods on peptide nanotubes via different directed-assembly pathways. NANOSCALE 2010; 2:2373-2376. [PMID: 20835484 PMCID: PMC6345669 DOI: 10.1039/c0nr00457j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Pb-binding TAR-1 peptides (Ile-Ser-Leu-Leu-His-Ser-Thr) were covalently conjugated on a bolaamphiphile peptide nanotube substrate and the precursors of PbSe were incubated at room temperature. This resulted in the growth of highly crystalline PbSe nanocubes on this biomimetic cylindrical substrate. The growth mechanism to generate nanocubes occurs via the directed self-assembly of nanoparticles and then nanoparticle fusion. The peptide conformation and the cylindrical peptide nanotube substrate play important roles in the mesoscopic crystallization of PbSe nanocubes. Changing the buffer for the peptide immobilization process from 2-(N-morpholino)ethanesulfonic acid to phosphate induces a transformation in the nanocrystal shape from nanocube to nanorods. The conformational change of the TAR-1 peptide on the nanotubes due to the change in the buffer seems to be responsible for aggregating intermediate nanoparticles in different directions for the directed fusion and mesoscopic crystallization of PbSe into the different shapes.
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Affiliation(s)
- Menglu Shi
- Department of Chemistry and Biochemistry, City University of New York - Hunter College, New York, NY 10065, USA
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Ungvári K, Pelsöczi IK, Kormos B, Oszkó A, Rakonczay Z, Kemény L, Radnai M, Nagy K, Fazekas A, Turzó K. Effects on titanium implant surfaces of chemical agents used for the treatment of peri-implantitis. J Biomed Mater Res B Appl Biomater 2010; 94:222-9. [PMID: 20524198 DOI: 10.1002/jbm.b.31644] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The treatment of peri-implantitis, which causes tissue deterioration surrounding osseointegrated implants, involves surface decontamination and cleaning. However, chemical cleaning agents may alter the structure of implant surfaces. We investigated three such cleaning solutions. Commercially pure (grade 4) machined titanium discs (CAMLOG Biotechnologies AG, Switzerland) were treated with 3% H(2)O(2) (5 min), saturated citric acid (pH = 1) (1 min) or chlorhexidine gel (5 min), and their surface properties were examined by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). Human epithelial cell attachment (24-h observation) and proliferation (72-h observation) were investigated via dimethylthiazolyl-diphenyltetrazolium bromide (MTT) and bicinchoninic acid (BCA) protein content assays. AFM revealed no significant difference in roughness of the three treated surfaces. XPS confirmed the constant presence of typical surface elements and an intact TiO(2) layer on each surface. The XPS peaks after chlorhexidine gel treatment demonstrated C-O and/or C=O bond formation, due to chlorhexidine digluconate infiltrating the surface. MTT and BCA assays indicated similar epithelial cell attachments in the three groups; epithelial cell proliferation being significantly higher after H(2)O(2) than after chlorhexidine gel treatment (not shown by BCA assays). These agents do not harm the Ti surface. Cleaning with H(2)O(2) slightly enhances human epithelial cell growth, in contrast to chlorhexidine gel.
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Affiliation(s)
- Krisztina Ungvári
- Department of Prosthodontics and Oral Biology, Faculty of Dentistry, University of Szeged, Tisza Lajos krt.64, H-6720 Szeged, Hungary
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Barbour ME, Gandhi N, el-Turki A, O'Sullivan DJ, Jagger DC. Differential adhesion of Streptococcus gordonii to anatase and rutile titanium dioxide surfaces with and without functionalization with chlorhexidine. J Biomed Mater Res A 2009; 90:993-8. [PMID: 18655136 DOI: 10.1002/jbm.a.32170] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The majority of dental implants are composed primarily of titanium and have an outer layer of titanium dioxide. Crystalline titanium dioxide most commonly exists in one of the two structures, anatase and rutile, and both of these have been observed on commercially available dental implants. Early implant failure can be associated with postoperative infection due to implant contamination during or immediately after surgery. The impetus of this study was to investigate whether functionalization of anatase and rutile titanium dioxide surfaces with chlorhexidine-reduced subsequent colonization of the surface by Streptococcus gordonii. Exposure to 100 mg x L(-1) chlorhexidine for 60 s resulted in a fivefold reduction in S. gordonii coverage on anatase and a twofold reduction on rutile. This may be related to a preferential adsorption of chlorhexidine to anatase compared with rutile. The reduction in bacterial coverage was not due to desorption of chlorhexidine into solution. More bacteria were observed on anatase than rutile surfaces without chlorhexidine functionalization, indicating that crystal structure may have a significant effect on bacterial colonization. In conclusion, functionalization with chlorhexidine reduced bacterial coverage on titanium dioxide surfaces, and anatase surfaces may be more amenable to such treatment than rutile.
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Affiliation(s)
- Michele E Barbour
- Department of Oral and Dental Science, University of Bristol, BS1 2LY, United Kingdom.
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Zhao L, Chu PK, Zhang Y, Wu Z. Antibacterial coatings on titanium implants. J Biomed Mater Res B Appl Biomater 2009; 91:470-80. [DOI: 10.1002/jbm.b.31463] [Citation(s) in RCA: 645] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Kim WH, Lee SB, Oh KT, Moon SK, Kim KM, Kim KN. The release behavior of CHX from polymer-coated titanium surfaces. SURF INTERFACE ANAL 2008. [DOI: 10.1002/sia.2809] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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