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Li R, Zhu J, Wang S, Li X, Li S. Effects of sterilization and disinfection methods on digitally designed surgical implant guide accuracy: An in vitro study. Clin Implant Dent Relat Res 2024. [PMID: 38808751 DOI: 10.1111/cid.13350] [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: 01/16/2024] [Revised: 04/10/2024] [Accepted: 05/16/2024] [Indexed: 05/30/2024]
Abstract
INTRODUCTION Surgical guides are commonly used to assist with dental implant placement. This study investigated the effects of five sterilization and disinfection methods on the accuracy of implant guides. METHODS Thirty surgical guides (five in each group) were designed and printed (with digital light processing technology) using different sterilization or disinfection methods categorized into six groups: hydrogen peroxide sterilization (group one); glutaraldehyde sterilization (group two); autoclaving (group three); plasma sterilization (group four); iodophor disinfection (group five); and blank group (group six). Verification was determined using three methods: distance and angle between the cross-shaped marks, deformation after superimposing the guides, and displacement and axial changes in the virtual implant. RESULTS After disinfection and sterilization, the guides in the autoclaving and iodophor groups showed a more pronounced color change and the guide in the autoclaving group had visible cracks. More significant changes were observed in the H2O2, glutaraldehyde, autoclaving, and iodophor groups regarding deformation after superimposing the guides and the distance and angle between the cross-shaped marks. The average labial deformation values (mm) of the first through fifth groups of guides were 0.283, 0.172, 0.289, 0.153, and 0.188, respectively. All groups were statistically different from the blank group for displacement and axial changes of the virtual implant (p < 0.05). CONCLUSION The sizes of almost all surgical guides changed after sterilization and disinfection treatments, with between-group differences. Plasma sterilization was more suitable for surgical guide sterilization because of the smaller deformations after treatment.
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Affiliation(s)
- Ruikun Li
- Department of Implant Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jie Zhu
- Department of Implant Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shuo Wang
- Department of Implant Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xueyuan Li
- Department of Ophthalmology, the General Hospital of Western Theater Command, Chengdu, China
| | - Songhang Li
- Department of Implant Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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2
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Alvim GC, de C Oliveira V, dos Reis AC, Schiavon MA, Pinto MR, da Silva MV, Lepri CP, de Castro DT. Effect of silver vanadate on the antibiofilm, adhesion and biocompatibility properties of denture adhesive. Future Microbiol 2024; 19:655-665. [PMID: 38700286 PMCID: PMC11259060 DOI: 10.2217/fmb-2023-0227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/16/2024] [Indexed: 05/05/2024] Open
Abstract
Aim: To evaluate the biological and mechanical properties of an adhesive with nanostructured silver vanadate (AgVO3). Materials & methods: Specimens in poly(methyl methacrylate) (PMMA) were treated with Ultra Corega Cream (UCCA) denture adhesive with or without AgVO3. Biofilms of Candida albicans, Candida glabrata and Streptococcus mutans were grown and the viable cells counted. Fluorescence microscopy was used. The viability of the VERO cell and adhesive strength were evaluated. Results: All concentrations of AgVO3 reduced the biofilm formation and showed no cytotoxic effect. At 5 min and 24 h, UCCA with 5 and 10% AgVO3 showed better performance, respectively. Conclusion: AgVO3 promoted the antibiofilm activity of the adhesive, with a positive effect on the adhesive strength, and was biocompatible.
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Affiliation(s)
- Graziele C Alvim
- Department of Biomaterials, School of Dentistry, University of Uberaba, Uberaba (MG), 38055-500, Brazil
| | - Viviane de C Oliveira
- Department of Dental Materials & Prosthodontics, Ribeirao Preto School of Dentistry, University of Sao Paulo, Ribeirao Preto (SP), 14040-904, Brazil
| | - Andréa C dos Reis
- Department of Dental Materials & Prosthodontics, Ribeirao Preto School of Dentistry, University of Sao Paulo, Ribeirao Preto (SP), 14040-904, Brazil
| | - Marco A Schiavon
- Department of Natural Sciences, Federal University of São Joao Del-Rei (UFSJ), São Joao Del-Rei (MG), 36307-352, Brazil
| | - Marcelo R Pinto
- Department of Biomaterials, School of Dentistry, University of Uberaba, Uberaba (MG), 38055-500, Brazil
| | - Marcos V da Silva
- Department of Microbiology, Immunology & Parasitology, Federal University of Triângulo Mineiro (UFTM), Uberaba (MG), 38025-180, Brazil
| | - César P Lepri
- Department of Biomaterials, School of Dentistry, University of Uberaba, Uberaba (MG), 38055-500, Brazil
| | - Denise T de Castro
- Department of Biomaterials, School of Dentistry, University of Uberaba, Uberaba (MG), 38055-500, Brazil
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3
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Piksa M, Lian C, Samuel IC, Pawlik KJ, Samuel IDW, Matczyszyn K. The role of the light source in antimicrobial photodynamic therapy. Chem Soc Rev 2023; 52:1697-1722. [PMID: 36779328 DOI: 10.1039/d0cs01051k] [Citation(s) in RCA: 49] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Antimicrobial photodynamic therapy (APDT) is a promising approach to fight the growing problem of antimicrobial resistance that threatens health care, food security and agriculture. APDT uses light to excite a light-activated chemical (photosensitiser), leading to the generation of reactive oxygen species (ROS). Many APDT studies confirm its efficacy in vitro and in vivo against bacteria, fungi, viruses and parasites. However, the development of the field is focused on exploring potential targets and developing new photosensitisers. The role of light, a crucial element for ROS production, has been neglected. What are the main parameters essential for effective photosensitiser activation? Does an optimal light radiant exposure exist? And finally, which light source is best? Many reports have described the promising antibacterial effects of APDT in vitro, however, its application in vivo, especially in clinical settings remains very limited. The restricted availability may partially be due to a lack of standard conditions or protocols, arising from the diversity of selected photosensitising agents (PS), variable testing conditions including light sources used for PS activation and methods of measuring anti-bacterial activity and their effectiveness in treating bacterial infections. We thus sought to systematically review and examine the evidence from existing studies on APDT associated with the light source used. We show how the reduction of pathogens depends on the light source applied, radiant exposure and irradiance of light used, and type of pathogen, and so critically appraise the current state of development of APDT and areas to be addressed in future studies. We anticipate that further standardisation of the experimental conditions will help the field advance, and suggest key optical and biological parameters that should be reported in all APDT studies. More in vivo and clinical studies are needed and are expected to be facilitated by advances in light sources, leading to APDT becoming a sustainable, alternative therapeutic option for bacterial and other microbial infections in the future.
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Affiliation(s)
- Marta Piksa
- Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Science, Weigla 12, 53-114, Wroclaw, Poland
| | - Cheng Lian
- Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, Fife, KY16 9SS, UK.
| | - Imogen C Samuel
- School of Medicine, University of Manchester, Manchester, M13 9PL, UK
| | - Krzysztof J Pawlik
- Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Science, Weigla 12, 53-114, Wroclaw, Poland
| | - Ifor D W Samuel
- Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, Fife, KY16 9SS, UK.
| | - Katarzyna Matczyszyn
- Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland.
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4
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Al-Qahtani MA. Efficacy of antimicrobial photodynamic therapy in disinfection of Candida biofilms on acrylic dentures: A systematic review. Photodiagnosis Photodyn Ther 2022; 40:102980. [PMID: 35809827 DOI: 10.1016/j.pdpdt.2022.102980] [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: 03/31/2022] [Revised: 06/19/2022] [Accepted: 06/21/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND The aim of this systematic review was to critically analyze and summarize the currently available scientific evidence concerning antifungal efficacy of aPDT against Candida on acrylic surface. METHODS The focused question was: '"Is aPDT effective in minimizing the counts of Candida on acrylic dentures". A literature search was conducted interpedently on the following electronic research databases: PubMED/MEDLINE, Cochrane, Google Scholar and Embase. The MeSH terms used were: ((antimicrobial photodynamic therapy) OR (light) OR (laser) OR (photodynamic)) AND ((Candida) OR (denture stomatitis)) AND ((denture) OR (acrylic) OR (polymethylmethacrylate) OR (dental prosthesis)). Data was extracted from the studies and quality assessment was carried out using a modified version of the CONSORT checklist. RESULTS Eighteen in-vitro anti-microbial studies and 5 clinical studies were included. Twenty-two studies suggested that aPDT was effective in reducing the Candida count on acrylic dentures and one study did not have a significant effect. 19 out of 23 studies were graded as having 'medium' quality and 4 studies were graded as 'high'. Several photosensitizers, including methylene blue, porphyrin derivatives, toluidine blue-O and others were used. LED was the most popular light source used for photo-activation of the photosensitizers. CONCLUSION Within the limitations of this review, aPDT is effective in reducing Candida growth on acrylic dentures and may prove to be clinical effective in preventing or treating denture stomatitis. However, more long-term clinical research is required before its clinical efficacy can be determined.
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Affiliation(s)
- Mohammed Ayedh Al-Qahtani
- Prosthetic Dental Science department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia.
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5
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Choe R, Balhaddad AA, Fisher JP, Melo MAS, Huang HC. Photodynamic Therapy for Biomodulation and Disinfection in Implant Dentistry: Is It Feasible and Effective? Photochem Photobiol 2021; 97:916-929. [PMID: 33876438 DOI: 10.1111/php.13434] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 03/11/2021] [Accepted: 04/13/2021] [Indexed: 12/17/2022]
Abstract
Dental implants are the most common rehabilitation and restorative treatment used to replace missing teeth. Biofilms adhere to implant surfaces to trigger implant-associated infection and inflammatory response. Clinically, the biofilm induces a local host response with the infiltration of phagocytic immune cells. The pro-inflammatory surroundings set off osteoclastogenesis, which leads to the septic loosening of the implant. The standard of dental care for implant-associated infection relies on a combination of surgery and antimicrobial therapy. Antimicrobial photodynamic therapy is a noninvasive and photochemistry-based approach capable of reducing bacterial load and modulating inflammatory responses. In this review, we explore the photobiomodulation and disinfection outcomes promoted by photodynamic therapy for implant infections, highlighting the quality of evidence on the most up-to-date studies, and discuss the major challenges on the advance of these therapeutic strategies.
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Affiliation(s)
- Robert Choe
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA.,Center for Engineering Complex Tissues, University of Maryland, College Park, MD, USA
| | - Abdulrahman A Balhaddad
- Dental Biomedical Sciences Ph.D. Program, University of Maryland School of Dentistry, Baltimore, MD, USA.,Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - John P Fisher
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA.,Center for Engineering Complex Tissues, University of Maryland, College Park, MD, USA
| | - Mary Anne S Melo
- Dental Biomedical Sciences Ph.D. Program, University of Maryland School of Dentistry, Baltimore, MD, USA.,Division of Operative Dentistry, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Huang-Chiao Huang
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA.,Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA
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6
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Sarker RR, Tsunoi Y, Haruyama Y, Ichiki Y, Sato S, Nishidate I. Combined Addition of Ethanol and Ethylenediaminetetraacetic Acid Enhances Antibacterial and Antibiofilm Effects in Methylene Blue-Mediated Photodynamic Treatment against Pseudomonas aeruginosa In Vitro. Photochem Photobiol 2020; 97:600-606. [PMID: 33230825 DOI: 10.1111/php.13358] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 11/19/2020] [Indexed: 01/23/2023]
Abstract
Antimicrobial photodynamic treatment (aPDT) for infection with drug-resistant bacteria has received much attention. For P. aeruginosa, however, efficient formation of biofilms and the nature of Gram-negative bacteria often limit the efficacy of aPDT. In this study, we investigated the effects of ethanol and ethylenediaminetetraacetic acid (EDTA) as additives on bacterial viability, biofilm biomass, and structures of bacteria and biofilms in methylene blue (MB)-mediated aPDT in vitro. Matured P. aeruginosa biofilms were incubated with 32-µm MB solutions with different concentrations of additives and then illuminated with 665-nm light from an LED array. The combined addition of 10% ethanol and 10 mm EDTA to MB resulted in significantly greater bactericidal effects than those of MB alone and of MB with 10% ethanol or 10 mm EDTA. Crystal violet assays showed significant reductions in biofilm biomass by aPDT with addition of both ethanol and EDTA compared to that in the case of aPDT with MB alone. Scanning electron microscopy showed broken bacterial cells and reduction in the cell density and amount of biofilm under those conditions. Ethanol addition alone did not improve aPDT efficacy. Reduced amount of biofilm by EDTA addition would have improved the transportation of MB and ethanol to bacteria.
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Affiliation(s)
- Roma Rani Sarker
- Graduate School of Bio-Applications & Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan.,Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Yasuyuki Tsunoi
- Division of Bioinformation and Therapeutic Systems, National Defense Medical College Research Institute, Tokorozawa, Japan
| | - Yasue Haruyama
- Division of Bioinformation and Therapeutic Systems, National Defense Medical College Research Institute, Tokorozawa, Japan
| | - Yayoi Ichiki
- Central Research Laboratory, National Defense Medical College, Tokorozawa, Japan
| | - Shunichi Sato
- Division of Bioinformation and Therapeutic Systems, National Defense Medical College Research Institute, Tokorozawa, Japan
| | - Izumi Nishidate
- Graduate School of Bio-Applications & Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan
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7
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Garcia BA, Panariello BHD, de Freitas Pontes KM, Duarte S. Regimen and different surfaces interfere with photodynamic therapy on Candida albicans biofilms. J Microbiol Methods 2020; 178:106080. [PMID: 33039543 DOI: 10.1016/j.mimet.2020.106080] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/01/2020] [Accepted: 10/02/2020] [Indexed: 01/10/2023]
Abstract
The aim of this study is to compare antimicrobial photodynamic therapy (aPDT) against Candida albicans biofilms formed on two different substrates - acrylic resin or bottom of polystyrene plate; and two aPDT application regimens - twice-daily over the course of 48 h or single treatment after 48 h biofilm formation. C. albicans SN425 biofilms cultivated on Roswell Park Memorial Institute medium were incubated for 5 min with toluidine blue O (44 μM) used as a photosensitizer before red light (635 nm; 175.2 J/cm2) exposure for 2 min. As negative control, ultrapure water, and as positive control 0.12% chlorhexidine (CHX) were used. Biofilms were analyzed for colony forming units (CFU) and cells morphology by confocal scanning laser microscopy. Single treatment and twice-daily aPDT on polystyrene plate and single treatment on acrylic resin did not significantly reduce the CFU (p > 0.05); in contrast, twice-daily aPDT on acrylic resin has reduced C. albicans below the detection limit, similarly to CHX treatment. Single aPDT treatment on polystyrene plate and on the resin presented a bulky and homogeneous biofilm predominantly formed by pseudohyphae. In contrast, in the resin group, the biofilm treated twice-daily with aPDT was predominantly formed by yeast cells, whilst pseudohyphae were occasionally visible. In conclusion, biofilms formed on polystyrene plates are more resistant to aPDT than biofilms formed on acrylic resin. Moreover, applying aPDT twice-daily reduces C. albicans biofilm development on acrylic resin and is a better approach against C. albicans biofilms than one single application on the mature biofilm.
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Affiliation(s)
- Bruna Albuquerque Garcia
- Department of Restorative Dentistry, Federal University of Ceara, Fortaleza, Ceara, Brazil. Monsenhor Furtado Street - Rodolfo Teófilo, Fortaleza, CE 60430-355, Brazil.
| | - Beatriz Helena Dias Panariello
- Department of Cariology, Operative Dentistry and Dental Public Health, Indiana University School of Dentistry, Indianapolis, Indiana, USA. 1121 W. Michigan Street, DS 406; Indianapolis, IN, 46202, USA.
| | - Karina Matthes de Freitas Pontes
- Department of Restorative Dentistry, Federal University of Ceara, Fortaleza, Ceara, Brazil. Monsenhor Furtado Street - Rodolfo Teófilo, Fortaleza, CE 60430-355, Brazil.
| | - Simone Duarte
- Department of Cariology, Operative Dentistry and Dental Public Health, Indiana University School of Dentistry, Indianapolis, Indiana, USA. 1121 W. Michigan Street, DS 406; Indianapolis, IN, 46202, USA.
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8
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Salehi B, Kregiel D, Mahady G, Sharifi-Rad J, Martins N, Rodrigues CF. Management of Streptococcus mutans- Candida spp. Oral Biofilms' Infections: Paving the Way for Effective Clinical Interventions. J Clin Med 2020; 9:E517. [PMID: 32075040 PMCID: PMC7074106 DOI: 10.3390/jcm9020517] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/10/2020] [Accepted: 02/12/2020] [Indexed: 12/18/2022] Open
Abstract
Oral diseases are considered the most common noncommunicable diseases and are related to serious local and systemic disorders. Oral pathogens can grow and spread in the oral mucosae and frequently in biomaterials (e.g., dentures or prostheses) under polymicrobial biofilms, leading to several disorders such as dental caries and periodontal disease. Biofilms harbor a complex array of interacting microbes, increasingly unapproachable to antimicrobials and with dynamic processes key to disease pathogenicity, which partially explain the gradual loss of response towards conventional therapeutic regimens. New drugs (synthesized and natural) and other therapies that have revealed promising results for the treatment or control of these mixed biofilms are presented and discussed here. A structured search of bibliographic databases was applied to include recent research. There are several promising new approaches in the treatment of Candida spp.-Streptococcus mutans oral mixed biofilms that could be clinically applied in the near future. These findings confirm the importance of developing effective therapies for oral Candida-bacterial infections.
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Affiliation(s)
- Bahare Salehi
- Student Research Committee, School of Medicine, Bam University of Medical Sciences, Bam 44340847, Iran;
| | - Dorota Kregiel
- Department of Environmental Biotechnology, Lodz University of Technology, 90-924 Lodz, Wolczanska 171/173, Poland;
| | - Gail Mahady
- Department of Pharmacy Practice, Clinical Pharmacognosy Laboratories, University of Illinois at Chicago, Chicago, IL 60612, USA;
| | - Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran 1991953381, Iran
- Department of Chemistry, Richardson College for the Environmental Science Complex, The University of Winnipeg, 599 Portage Avenue, Winnipeg, MB R3B 2G3, Canada
| | - Natália Martins
- Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, Porto 4200-319, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto 4200-135, Portugal
| | - Célia F. Rodrigues
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, Porto 4200-465, Portugal
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Khatoon Z, McTiernan CD, Suuronen EJ, Mah TF, Alarcon EI. Bacterial biofilm formation on implantable devices and approaches to its treatment and prevention. Heliyon 2018; 4:e01067. [PMID: 30619958 PMCID: PMC6312881 DOI: 10.1016/j.heliyon.2018.e01067] [Citation(s) in RCA: 555] [Impact Index Per Article: 92.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 12/17/2018] [Accepted: 12/17/2018] [Indexed: 02/06/2023] Open
Abstract
In living organisms, biofilms are defined as complex communities of bacteria residing within an exopolysaccharide matrix that adheres to a surface. In the clinic, they are typically the cause of chronic, nosocomial, and medical device-related infections. Due to the antibiotic-resistant nature of biofilms, the use of antibiotics alone is ineffective for treating biofilm-related infections. In this review, we present a brief overview of concepts of bacterial biofilm formation, and current state-of-the-art therapeutic approaches for preventing and treating biofilms. Also, we have reviewed the prevalence of such infections on medical devices and discussed the future challenges that need to be overcome in order to successfully treat biofilms using the novel technologies being developed.
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Affiliation(s)
- Zohra Khatoon
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, K1Y 4W7, Canada
| | - Christopher D. McTiernan
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, K1Y 4W7, Canada
| | - Erik J. Suuronen
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, K1Y 4W7, Canada
| | - Thien-Fah Mah
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, Ontario, Canada
| | - Emilio I. Alarcon
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, K1Y 4W7, Canada
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, Ontario, Canada
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10
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Hu X, Huang YY, Wang Y, Wang X, Hamblin MR. Antimicrobial Photodynamic Therapy to Control Clinically Relevant Biofilm Infections. Front Microbiol 2018; 9:1299. [PMID: 29997579 PMCID: PMC6030385 DOI: 10.3389/fmicb.2018.01299] [Citation(s) in RCA: 236] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 05/28/2018] [Indexed: 12/15/2022] Open
Abstract
Biofilm describes a microbially-derived sessile community in which microbial cells are firmly attached to the substratum and embedded in extracellular polymeric matrix. Microbial biofilms account for up to 80% of all bacterial and fungal infections in humans. Biofilm-associated pathogens are particularly resistant to antibiotic treatment, and thus novel antibiofilm approaches needed to be developed. Antimicrobial Photodynamic therapy (aPDT) had been recently proposed to combat clinically relevant biofilms such as dental biofilms, ventilator associated pneumonia, chronic wound infections, oral candidiasis, and chronic rhinosinusitis. aPDT uses non-toxic dyes called photosensitizers (PS), which can be excited by harmless visible light to produce reactive oxygen species (ROS). aPDT is a multi-stage process including topical PS administration, light irradiation, and interaction of the excited state with ambient oxygen. Numerous in vitro and in vivo aPDT studies have demonstrated biofilm-eradication or substantial reduction. ROS are produced upon photo-activation and attack adjacent targets, including proteins, lipids, and nucleic acids present within the biofilm matrix, on the cell surface and inside the microbial cells. Damage to non-specific targets leads to the destruction of both planktonic cells and biofilms. The review aims to summarize the progress of aPDT in destroying biofilms and the mechanisms mediated by ROS. Finally, a brief section provides suggestions for future research.
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Affiliation(s)
- Xiaoqing Hu
- State Key Laboratory of Food Science and Technology, School of Biotechnology, Jiangnan University, Wuxi, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
- The Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, United States
- Department of Dermatology, Harvard Medical School, Boston, MA, United States
| | - Ying-Ying Huang
- The Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, United States
- Department of Dermatology, Harvard Medical School, Boston, MA, United States
| | - Yuguang Wang
- The Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, United States
- Department of Dermatology, Harvard Medical School, Boston, MA, United States
- Center of Digital Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xiaoyuan Wang
- State Key Laboratory of Food Science and Technology, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Michael R. Hamblin
- The Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, United States
- Department of Dermatology, Harvard Medical School, Boston, MA, United States
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, United States
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11
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Polychronakis N, Polyzois G, Lagouvardos P, Andreopoulos A, Ngo HC. Long-term microwaving of denture base materials: effects on dimensional, color and translucency stability. J Appl Oral Sci 2018; 26:e20170536. [PMID: 29898184 PMCID: PMC6010326 DOI: 10.1590/1678-7757-2017-0536] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 02/22/2018] [Indexed: 11/24/2022] Open
Abstract
While the combined effect of microwave irradiation with cleansing solutions on denture base materials has been investigated, the effects of only using microwave irradiation and, more importantly, in a long-term basis, was not studied yet.
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Affiliation(s)
- Nick Polychronakis
- National and Kapodistrian University of Athens, School of Dentistry, Department of Prosthodontics, Athens, Greece
| | - Gregory Polyzois
- National and Kapodistrian University of Athens, School of Dentistry, Department of Prosthodontics, Athens, Greece
| | - Panagiotis Lagouvardos
- National and Kapodistrian University of Athens, School of Dentistry, Department of Operative Dentistry, Athens, Greece
| | - Andreas Andreopoulos
- National Technical University of Athens, School of Chemical Engineering, Department of Synthesis and Development of Industrial Processes, Athens, Greece
| | - Hien Chi Ngo
- University of Sharjha, College of Dental Medicine, Department of Preventive and Restorative Dentistry, Sharjha, United Arab Emirates
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12
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Effect of methylene blue-mediated antimicrobial photodynamic therapy on dentin caries microcosms. Lasers Med Sci 2017; 33:479-487. [DOI: 10.1007/s10103-017-2379-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 10/26/2017] [Indexed: 01/10/2023]
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13
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Varela Kellesarian S, Abduljabbar T, Vohra F, Malmstrom H, Yunker M, Varela Kellesarian T, Romanos GE, Javed F. Efficacy of antimicrobial photodynamic therapy in the disinfection of acrylic denture surfaces: A systematic review. Photodiagnosis Photodyn Ther 2017; 17:103-110. [DOI: 10.1016/j.pdpdt.2016.12.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 11/25/2016] [Accepted: 12/02/2016] [Indexed: 12/13/2022]
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Sousa AS, Prates RA, de Santi MESO, Lopes RG, Bussadori SK, Ferreira LR, Deana AM. Photodynamic inactivation of Candida albicans biofilm: Influence of the radiant energy and photosensitizer charge. Photodiagnosis Photodyn Ther 2016; 14:111-4. [PMID: 26995104 DOI: 10.1016/j.pdpdt.2016.03.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 03/11/2016] [Accepted: 03/15/2016] [Indexed: 12/28/2022]
Abstract
BACKGROUND The aim of this study is to investigate the photoinactivation of C. albicans biofilm on acrylic resin discs (the standard material for dental prosthesis) using the photosensitizers Methylene Blue and a Protoporphyrin IX. METHODS Eighteen thermally activated Methyl Methacrylate Polymers were used for the biofilm growth of Candida albicans ATCC 10231. Two photosensitizers were tested: methylene blue (50μM) and protoporphyrin IX (10μM). Two custom-made LEDs emitting at 660nm and 630nm with approximately 800mW each were used for the irradiation, with duration ranging from 2 to 10min. RESULTS This study demonstrates that MB decreased the aPDT CFUs by approximately two orders of magnitude, but the protoporphyrin was ineffective. CONCLUSION The aPDT with MB significantly reduces (but does not sterilize) the amount of CFU after 10min of irradiation, and it is not dose-dependent. The lack of effect of the protoporphyrin is likely because the negative charges of the proteoglycans present in the extracellular matrix repel the negative charges of the PS, thus preventing its diffusion in the cells.
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Affiliation(s)
- Aline Silva Sousa
- Postgraduate Program in Biophotonics Applied to Health Sciences, Nove de Julho University (UNINOVE), São Paulo, SP, Brazil
| | - Renato Araujo Prates
- Postgraduate Program in Biophotonics Applied to Health Sciences, Nove de Julho University (UNINOVE), São Paulo, SP, Brazil.
| | | | - Rúbia Garcia Lopes
- Postgraduate Program in Biophotonics Applied to Health Sciences, Nove de Julho University (UNINOVE), São Paulo, SP, Brazil
| | - Sandra Kalil Bussadori
- Postgraduate Program in Biophotonics Applied to Health Sciences, Nove de Julho University (UNINOVE), São Paulo, SP, Brazil
| | - Luis Rodolfo Ferreira
- Postgraduate Program in Biophotonics Applied to Health Sciences, Nove de Julho University (UNINOVE), São Paulo, SP, Brazil
| | - Alessandro Melo Deana
- Postgraduate Program in Biophotonics Applied to Health Sciences, Nove de Julho University (UNINOVE), São Paulo, SP, Brazil
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The effects of silane-SiO2 nanocomposite films on Candida albicans adhesion and the surface and physical properties of acrylic resin denture base material. J Prosthet Dent 2014; 112:1530-8. [DOI: 10.1016/j.prosdent.2014.06.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 06/11/2014] [Accepted: 06/13/2014] [Indexed: 11/21/2022]
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