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Semnani SJ, Moghadam KN, Jafari Z, Chiniforush N. Comparative effects of the conventional, ultrasonic, and laser-activated irrigation on penetration depth of three photosensitizers in the root canal system. Photodiagnosis Photodyn Ther 2024:104286. [PMID: 39053791 DOI: 10.1016/j.pdpdt.2024.104286] [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: 06/26/2024] [Revised: 07/20/2024] [Accepted: 07/22/2024] [Indexed: 07/27/2024]
Abstract
OBJECTIVES This study compared the effects of conventional, ultrasonic, and laser-activated irrigation (LAI) on penetration depth of three photosensitizers (PSs) in the root canal system. MATERIALS AND METHODS In this in vitro, experimental study, 120 extracted anterior teeth were decoronated such that the remaining root length was standardized at 12 mm. After root canal instrumentation with the ProTaper rotary system and irrigation with 5.25% NaOCl, the roots were assigned to 12 groups for the application of toluidine blue (TB), curcumin, and phycocyanin PSs combined with the LAI using erbium laser with 0.4 mm and 0.6 mm tips, ultrasonic activation, and conventional irrigation. The specimens were sectioned apicocoronally, and the dye penetration depth was quantified in the coronal, middle, and apical thirds under a stereomicroscope at x20 magnification. Data were analyzed by the Kruskal-Wallis and Dunn test (alpha=0.05). RESULTS The effects of irrigation technique, PS type, and their interaction on dye penetration depth were significant at the apical, middle, and coronal thirds (P<0.0001). TB + LAI with 0.4- and 0.6-mm laser tips showed the highest penetration depth while phycocyanin + LAI or conventional irrigation showed the lowest penetration depth at all areas. Dye penetration depth was the highest in the coronal, and the lowest in the apical third. CONCLUSION The LAI technique with erbium laser (0.4- and 0.6-mm tips) enhanced the penetration depth of TB. The tested irrigation techniques had no significant efficacy for enhancement of the penetration depth of curcumin and phycocyanin.
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Affiliation(s)
| | | | - Zahra Jafari
- Department of Endodontics, Shahed University Dental School, Tehran, Iran
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Pitaksanurat P, Mayeah N, Saithong P, Pimha S, Sirikarn P, Damrongrungruang T. Anticandidal effect of multiple sessions of erythrosine and potassium iodide-mediated photodynamic therapy. J Oral Microbiol 2024; 16:2369357. [PMID: 38903483 PMCID: PMC11188948 DOI: 10.1080/20002297.2024.2369357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 06/11/2024] [Indexed: 06/22/2024] Open
Abstract
Background Erythrosine+potassium iodide-mediated photodynamic therapy has shown an anticandidal effect. Single session, however, has inadequate fungal inhibition. Objectives We aimed to examine the effects of multiple aPDT sessions on Candida albicans inhibition and singlet oxygen formation. Methods 220 μM erythrosine +/-100 mM potassium iodide was applied to C. albicans biofilms for 1 min prior to irradiation at 530±10 nm using a 250 mW/cm2 light-emitting diode. Negative and positive controls were phosphate buffer saline and nystatin, respectively. Single, double and triple irradiation sessions with a 5 min resting time between sessions were performed. Post-treatment candidal counts were done at 0, 1 6 and 24 hr while log10 colony forming unit/ml was calculated and compared using a Kruskal-Wallis with Dunn's post hoc test at a p<0.05 - Singlet oxygen amount was compared using one-way ANOVA with a post hoc test at a p< 0.05. Results Two and three irradiation sessions to erythrosine+potassium iodide could inhibit Candida albicans at 7.92 log10CFU/ml (p < 0.001) . Singlet oxygen from a combination groups was significantly higher than for erythrosine (positive control). Moreover, the correlation coefficient (r) between singlet oxygen production and decreased Candida albicans counts was equal to 1. Conclusion Multiple sessions PDT of 220 μM erythrosine+100 mM potassium iodide effectively inhibited a Candida biofilm.
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Affiliation(s)
- Pran Pitaksanurat
- Division of Oral Diagnosis, Department of Oral Biomedical Sciences, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
| | - Nirawat Mayeah
- Division of Oral Diagnosis, Department of Oral Biomedical Sciences, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
| | - Pattranun Saithong
- Division of Oral Diagnosis, Department of Oral Biomedical Sciences, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
| | - Surachai Pimha
- Department of Public Health Administration, Health Promotion, and Nutrition, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
| | - Prapatsara Sirikarn
- Division of Oral Diagnosis, Department of Oral Biomedical Sciences, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
- Department of Epidemiology and Biostatistics, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
| | - Teerasak Damrongrungruang
- Division of Oral Diagnosis, Department of Oral Biomedical Sciences, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
- Melatonin Research Program, Khon Kaen University, Khon Kaen, Thailand
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Yamaguchi Y, Yoshii D, Katsuragi H, Shinkai K. Effect of Laser Irradiation Modes and Photosensitizer Types on Antimicrobial Photodynamic Therapy (aPDT) for Streptococcus sobrinus in the Crown Dentin of Bovine Teeth: An Experimental In Vitro Study. Dent J (Basel) 2024; 12:59. [PMID: 38534283 DOI: 10.3390/dj12030059] [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: 10/20/2023] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/28/2024] Open
Abstract
This study aimed to assess the impact of different laser irradiation modes and photosensitizer types on the bactericidal efficacy of antimicrobial photodynamic therapy (aPDT). Dentin plates were prepared by sectioning the crown dentin of bovine teeth infected with Streptococcus sobrinus (n = 11). Nine aPDTs involving the combination of three 1% solutions of photosensitizers (brilliant blue, BB; acid red, AR; and methylene blue, MB) and three irradiation modes of semiconductor lasers (50 mW for 120 s, 100 mW for 60 s, and 200 mW for 30 s) were performed for each infected dentin plate, and the control consisted of the specimens not applied with aPDT. The bactericidal effects in 10 groups were evaluated using both assays of the colony count (colony-forming-unit: CFU) and adenosine triphosphate (ATP) (relative-light-unit: RLU). The data obtained were analyzed using the Kruskal-Wallis test (α = 0.05). The most aPDT groups exhibited significantly lower RLU and CFU values compared with the control (p < 0.05). The effect of irradiation modes on RLU and CFU values was significant in the aPDT group using BB (p < 0.05) but not in the aPDT group using AR or MB. The aPDT performed with AR or MB exerted a remarkable bactericidal effect.
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Affiliation(s)
- Yohei Yamaguchi
- Advance Operative Dentistry-Endodontics, The Nippon Dental University Graduate School of Life Dentistry at Niigata, 1-8 Hamauracho, Chuo-ku, Niigata 951-8580, Japan
| | - Daiki Yoshii
- Department of Operative Dentistry, The Nippon Dental University School of Life Dentistry at Niigata, 1-8 Hamauracho, Chuo-ku, Niigata 951-8580, Japan
| | - Hiroaki Katsuragi
- Research Center for Odontology, The Nippon Dental University School of Life Dentistry, 1-9-20 Fujimi, Chiyoda-ku, Tokyo 102-8159, Japan
| | - Koichi Shinkai
- Advance Operative Dentistry-Endodontics, The Nippon Dental University Graduate School of Life Dentistry at Niigata, 1-8 Hamauracho, Chuo-ku, Niigata 951-8580, Japan
- Department of Operative Dentistry, The Nippon Dental University School of Life Dentistry at Niigata, 1-8 Hamauracho, Chuo-ku, Niigata 951-8580, Japan
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Damrongrungruang T, Panutyothin N, Kongjun S, Thanabat K, Ratha J. Combined bisdemethoxycurcumin and potassium iodide-mediated antimicrobial photodynamic therapy. Heliyon 2023; 9:e17490. [PMID: 37455953 PMCID: PMC10345248 DOI: 10.1016/j.heliyon.2023.e17490] [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: 02/22/2023] [Revised: 06/12/2023] [Accepted: 06/20/2023] [Indexed: 07/18/2023] Open
Abstract
Antimicrobial photodynamic therapy is emerging as a promising way to treat infections with minimal side effects. Typically, a single photosensitizer used in photodynamic therapy is capable of generating only one type of reactive oxygen species, which may have inadequate capability to eradicate certain types of microbes, especially Candida species. Thus, the use of combined photosensitizers is examined as a means of achieving superior antimicrobial results. We postulate that bisdemethoxycurcumin, a type I reactive oxygen species generator, combined with potassium iodide, an antimicrobial iodide molecule, might exhibit superior antimicrobial effects compared to a single photosensitizer-mediated photodynamic therapy. The effects of bisdemethoxycurcumin + potassium iodide + dental blue light on Candida albicans reduction were examined. Candida biofilms were treated with 20, 40 or 80 μM bisdemethoxycurcumin, 100 mM potassium iodide or a combination of these species for 20 min before irradiation with a dental blue light (90 J/cm2). The negative and positive controls were phosphate buffer saline and nystatin at 1 : 100,000 units/ml, respectively. Candidal numbers were quantified at 0, 1, 6 and 24 h. Hydroxyl radicals were spectrophotometrically measured using 2-[6-(4'amino phynoxyl-3H-xanthen-3-on-9-yl)] benzoic acid or APF probe-mediated fluorescence intensity (Varioskan) at 490/515 nm (excitation/emission). Candidal counts and hydroxyl radical comparisons were performed using the Kruskal-Wallis test and one-way ANOVA, respectively. Correlations between candidal numbers and hydroxyl radical levels were done with a Pearson correlation test. Forty μM bisdemethoxycurcumin+100 mM KI could provide a 3.5 log10 CFU/ml reduction after 6 h. Bisdemethoxycurcumin alone generated OH levels that were strongly correlated with candidal reduction. In conclusion, 40 μM bisdemethoxycurcumin+100 mM KI could reduce C. albicans biofilm.
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Affiliation(s)
- Teerasak Damrongrungruang
- Division of Oral Diagnosis, Department of Oral Biomedical Science, Faculty of Dentistry, Khon Kaen University, 40002, Thailand
- Melatonin Research Program, The Research and Academic Affairs, Khon Kaen University, 40002, Thailand
| | - Nichapat Panutyothin
- Division of Oral Diagnosis, Department of Oral Biomedical Science, Faculty of Dentistry, Khon Kaen University, 40002, Thailand
| | - Sirapakorn Kongjun
- Division of Oral Diagnosis, Department of Oral Biomedical Science, Faculty of Dentistry, Khon Kaen University, 40002, Thailand
| | - Kittapak Thanabat
- Division of Oral Diagnosis, Department of Oral Biomedical Science, Faculty of Dentistry, Khon Kaen University, 40002, Thailand
| | - Juthamat Ratha
- Melatonin Research Program, The Research and Academic Affairs, Khon Kaen University, 40002, Thailand
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Yamada I, Kataoka T, Ikeda R, Tagaya M. Investigation into the Photochemical Properties of Methylene Blue-Immobilized Hydroxyapatite Nanoparticles for Theranostic Application. ACS APPLIED BIO MATERIALS 2023; 6:473-482. [PMID: 36648755 DOI: 10.1021/acsabm.2c00756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In the biomedical field, there has been a requirement for developing theranostic nanomaterials with higher biosafety, leading to both diagnosis and therapy. Methylene blue (MB+) is an organic dye with both photoluminescence (PL) and photosensitization abilities to generate singlet oxygen (1O2). However, MB+ easily loses its generation ability by hydrogen reduction in vivo or by forming aggregates. In this study, MB+ immobilized on biocompatible hydroxyapatite (HA) nanoparticles was applied for the bifunctions of efficient PL and photosensitization. The MB+-immobilized HA nanoparticles (MH) formed aggregates with sizes of 80-100 nm in phosphate buffer (PB). The generation amount and efficiency of 1O2 from the nanoparticles in PB seem to depend on the immobilized MB+ amount and the percentage of the monomer, respectively. Considering the larger immobilized amount and percentage of the MB+ monomer, it was found that there was MH with the lower generation amount and efficiency of 1O2 to exhibit the highest PL intensity. The photofunctional measurement of MB+ revealed the state of MB+ molecules on the HA surface, and it was suggested that the MB+ molecules immobilized on the MH surface would form more hydrogen bonds to change their excitation states. In the cellular experiments, the Hela cancer cells reacted with the nanoparticles and showed red-color PL, indicating cellular imaging. Furthermore, the adherent cell coverage decreased by 1O2 generation, indicating the importance of the immobilization amount of the MB+ monomer. Therefore, theranostic nanomaterials with biosafety were successfully synthesized to show two photofunctions, which provide both cellular imaging and photodynamic therapy by the nanohybrid system between HA and MB+.
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Affiliation(s)
- Iori Yamada
- Department of Materials Science and Technology, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata940-2188, Japan.,Research Fellow of the Japan Society for the Promotion of Science (DC), 5-3-1 Koji-machi, Chiyoda-ku, Tokyo102-0083, Japan
| | - Takuya Kataoka
- Department of Materials Science and Technology, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata940-2188, Japan
| | - Ryota Ikeda
- Department of Materials Science and Technology, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata940-2188, Japan
| | - Motohiro Tagaya
- Department of Materials Science and Technology, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata940-2188, Japan
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Manoil D, Parga A, Hellesen C, Khawaji A, Brundin M, Durual S, Özenci V, Fang H, Belibasakis GN. Photo-oxidative stress response and virulence traits are co-regulated in E. faecalis after antimicrobial photodynamic therapy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 234:112547. [PMID: 36030693 DOI: 10.1016/j.jphotobiol.2022.112547] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/23/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
Knowledge of photo-oxidative stress responses in bacteria that survive antimicrobial photodynamic therapy (aPDT) is scarce. Whereas aPDT is attracting growing clinical interest, subsequent stress responses are crucial to evaluate as they may lead to the up-regulation of pathogenic traits. Here, we aimed to assess transcriptional responses to sublethal aPDT-stress and identify potential connections with virulence-related genes. Six Enterococcus faecalis strains were investigated; ATCC 29212, three dental root-canal isolates labelled UmID1, UmID2 and UmID3 and two vancomycin-resistant isolates labelled A1 and A2. TMPyP was employed as a photosensitiser. A viability dose-response curve to increasing concentrations of TMPyP was determined by culture plating. Differential expression of genes involved in oxidative stress responses (dps and hypR), general stress responses (dnaK, sigma-factorV and relA), virulence-related genes (ace, fsrC and gelE) and vancomycin-resistance (vanA) was assessed by reverse-transcription qPCR. TMPyP-mediated aPDT inactivated all strains with comparable efficiencies. TMPyP at 0.015 μM was selected to induce sublethal photo-oxidative stress. Despite heterogeneities in gene expression between strains, transcriptional profiles revealed up-regulations of transcripts dps, hypR as well as dnaK and sigma factorV after exposure to TMPyP alone and to light-irradiated TMPyP. Specifically, the alternative sigma factorV reached up to 39 ± 113-fold (median ± IQR) (p = 0.0369) in strain A2. Up-regulation of the quorum sensing operon, fsr, and its downstream virulence-related gelatinase gelE were also observed in strains ATCC-29212, A1, A2 and UmID3. Finally, photo-oxidative stress induced vanA-type vancomycin-resistance gene in both carrier isolates, reaching up to 3.3 ± 17-fold in strain A2 (p = 0.015). These findings indicate that, while aPDT successfully inactivates vancomycin-resistant and naïve strains of E. faecalis, subpopulations of surviving cells respond by co-ordinately up-regulating a network of genes involved in stress survival and virulence. This includes the induction of vancomycin-resistance genes in carrier isolates. These data may provide the mechanistic basis to circumvent bacterial responses and improve future clinical protocols.
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Affiliation(s)
- Daniel Manoil
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Huddinge, Stockholm, Sweden; Division of Cariology and Endodontics, University Clinics of Dental Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland.
| | - Ana Parga
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Huddinge, Stockholm, Sweden; Department of Microbiology and Parasitology, CIBUS-Faculty of Biology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Cecilia Hellesen
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Huddinge, Stockholm, Sweden
| | - Arwa Khawaji
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Huddinge, Stockholm, Sweden
| | - Malin Brundin
- Division of Endodontics, Department of Odontology, Umeå University, Umeå, Sweden
| | - Stéphane Durual
- Biomaterials Laboratory, Division of Fixed Prosthodontics and Biomaterials, University Clinics of Dental Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Volkan Özenci
- Department of Laboratory Medicine, Karolinska University Hospital Huddinge, Karolinska Institute, Huddinge, Stockholm, Sweden
| | - Hong Fang
- Department of Laboratory Medicine, Karolinska University Hospital Huddinge, Karolinska Institute, Huddinge, Stockholm, Sweden
| | - Georgios N Belibasakis
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Huddinge, Stockholm, Sweden
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7
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Adcock AF, Wang P, Ferguson IS, Obu SC, Sun YP, Yang L. Inactivation of Vesicular Stomatitis Virus with Light-Activated Carbon Dots and Mechanistic Implications. ACS APPLIED BIO MATERIALS 2022; 5:3158-3166. [PMID: 35797334 DOI: 10.1021/acsabm.2c00153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The prevention of viral transmission is an important step to address the spread of viral infections. Using the enveloped vesicular stomatitis virus (VSV) as a model, this study explored the antiviral functions of the specifically designed and prepared carbon dots (CDots). The CDots were prepared using small carbon nanoparticles with surface functionalization-passivation by oligomeric polyethylenimine (PEI). The results indicated that the PEI-CDots were readily activated by visible light to effectively and efficiently inactivate VSVs under various combinations of experimental conditions (viral titer, dot concentration, and treatment time). The photodynamically induced viral structural protein degradation and genomic RNA degradation were observed, suggesting the mechanistic origins, leading to the inactivation of virus. The results suggested CDots as a class of promising broad-spectrum antiviral agents for disinfection of viruses.
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Affiliation(s)
- Audrey F Adcock
- Biomanufacturing Research Institute and Technology Enterprise (BRITE) and Department of Pharmaceutical Sciences, North Carolina Central University, Durham, North Carolina 27707, United States
| | - Ping Wang
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Isaiah S Ferguson
- Biomanufacturing Research Institute and Technology Enterprise (BRITE) and Department of Pharmaceutical Sciences, North Carolina Central University, Durham, North Carolina 27707, United States
| | - Somtochukwu C Obu
- Biomanufacturing Research Institute and Technology Enterprise (BRITE) and Department of Pharmaceutical Sciences, North Carolina Central University, Durham, North Carolina 27707, United States
| | - Ya-Ping Sun
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Liju Yang
- Biomanufacturing Research Institute and Technology Enterprise (BRITE) and Department of Pharmaceutical Sciences, North Carolina Central University, Durham, North Carolina 27707, United States
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Liu Y, Dong W, Shen S, Meng F, Wang J, Yang K, Lin D. Enhancement of E. coli inactivation by photosensitized erythrosine-based solar disinfection under weakly acidic conditions. WATER RESEARCH 2022; 212:118125. [PMID: 35123381 DOI: 10.1016/j.watres.2022.118125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
Cost-effective disinfection technology is urgently needed in poor rural areas. Erythrosine (ERY)-based solar disinfection (SODIS) provides a promising solution because of its effective inactivation of viruses and gram-positive bacteria at low cost. However, the poor gram-negative bacteria (G-, e.g., Escherichia coli) inactivation of photosensitized ERY inhibits its application. Herein, for the first time, the protonation of ERY was found to greatly enhance its G- inactivation, and 99.99999% (7.0 log) of E. coli were completely inactivated within only 30 s using 2.5 mg/L ERY under 200 mW/cm2 visible light irradiation. The inactivation rate constant (k) reached 17.5 min-1 at pH 4.0, which was 4730 times higher than that at pH 7.0. At a lower pH, more severe cell wall and genomic DNA damage was observed. A linear correlation between k and monoanionic ERY (HE-) content was obtained, indicating that HE- rather than dianionic ERY (E2-) participated in the inactivation at pH 5.0-7.0, which was further explained by the higher production of reactive oxygen species and bacterial adsorption of HE- than E2-. Both 1O2 and O2-• dominated bacterial inactivation, contributing 56.8% and 43.2%, respectively. O2-• but not 1O2 caused ERY photobleaching. OH• was not involved in either inactivation or photobleaching. Humic acid and salts (NaCl, Na2SO4, CaCl2, and MgCl2) slightly inhibited inactivation, while NaHCO3 accelerated inactivation. Complete inactivation (99.9999%) of E. coli was achieved within ∼30 min at pH 5.0 in ERY-based SODIS with good adaptation to various water matrices and weather (sunny or partly cloudy). This work will help to promote the application of ERY-based disinfection especially for SODIS in poor rural areas.
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Affiliation(s)
- Yi Liu
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Wenhua Dong
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Shuyi Shen
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Fanxu Meng
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Jiajia Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Kun Yang
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Daohui Lin
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Ecological Civilization Academy, Anji 313300, China.
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Tisler CE, Chifor R, Badea ME, Moldovan M, Prodan D, Carpa R, Cuc S, Chifor I, Badea AF. Photodynamic Therapy (PDT) in Prosthodontics: Disinfection of Human Teeth Exposed to Streptococcus mutans and the Effect on the Adhesion of Full Ceramic Veneers, Crowns, and Inlays: An In Vitro Study. Biomedicines 2022; 10:144. [PMID: 35052823 PMCID: PMC8773555 DOI: 10.3390/biomedicines10010144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/07/2022] [Accepted: 01/07/2022] [Indexed: 11/21/2022] Open
Abstract
The use of PDT in prosthodontics as a disinfection protocol can eradicate bacteria from tooth surfaces by causing the death of the microorganisms to which the photosensitizer binds, absorbing the energy of laser light during irradiation. The aim of the study was to investigate the capacity of PDT to increase the bond strength of full ceramic restorations. In this study, 45 extracted human teeth were prepared for veneers, crowns, and inlays and contaminated with Streptococcus mutans. Tooth surfaces decontamination was performed using a diode laser and methylene blue as a photosensitizer. The disinfection effect and the impact on tensile bond strength were evaluated by scanning electron microscopy (SEM) and pull-out tests of the cemented ceramic prosthesis. Results show that the number of bacteria was reduced from colonized prepared tooth surfaces, and the bond strength was increased when PDT was used. In conclusion, the present study indicates that using PDT as a protocol before the final adhesive cementation of ceramic restorations could be a promising approach, with outstanding advantages over conventional methods.
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Affiliation(s)
- Corina Elena Tisler
- Department of Prosthetic Dentistry and Dental Materials, Iuliu Hatieganu University of Medicine and Pharmacy, 32 Clinicilor Street, 400006 Cluj-Napoca, Romania;
| | - Radu Chifor
- Department of Preventive Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Avram Iancu 31, 400083 Cluj-Napoca, Romania; (M.E.B.); (I.C.)
| | - Mindra Eugenia Badea
- Department of Preventive Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Avram Iancu 31, 400083 Cluj-Napoca, Romania; (M.E.B.); (I.C.)
| | - Marioara Moldovan
- Department of Polymer Composites, Institute of Chemistry “Raluca Ripan”, University Babes-Bolyai, 400294 Cluj-Napoca, Romania; (M.M.); (D.P.)
| | - Doina Prodan
- Department of Polymer Composites, Institute of Chemistry “Raluca Ripan”, University Babes-Bolyai, 400294 Cluj-Napoca, Romania; (M.M.); (D.P.)
| | - Rahela Carpa
- Department of Molecular Biology and Biotechnology, Faculty of Biology and Geology, Babeș Bolyai University, 1 M. Kogălniceanu Street, 400084 Cluj-Napoca, Romania;
| | - Stanca Cuc
- Department of Polymer Composites, Institute of Chemistry “Raluca Ripan”, University Babes-Bolyai, 400294 Cluj-Napoca, Romania; (M.M.); (D.P.)
| | - Ioana Chifor
- Department of Preventive Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Avram Iancu 31, 400083 Cluj-Napoca, Romania; (M.E.B.); (I.C.)
| | - Alexandru Florin Badea
- Department of Morphological Sciences, Discipline of Anatomy and Embryology, Faculty of General Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 3–5 Clinicilor Street, 400006 Cluj-Napoca, Romania;
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Dadi NCT, Bujdák J, Medvecká V, Pálková H, Barlog M, Bujdáková H. Surface Characterization and Anti-Biofilm Effectiveness of Hybrid Films of Polyurethane Functionalized with Saponite and Phloxine B. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7583. [PMID: 34947179 PMCID: PMC8703816 DOI: 10.3390/ma14247583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/02/2021] [Accepted: 12/06/2021] [Indexed: 11/28/2022]
Abstract
The main objective of this work was to synthesize composites of polyurethane (PU) with organoclays (OC) exhibiting antimicrobial properties. Layered silicate (saponite) was modified with octadecyltrimethylammonium cations (ODTMA) and functionalized with phloxine B (PhB) and used as a filler in the composites. A unique property of composite materials is the increased concentration of modifier particles on the surface of the composite membranes. Materials of different compositions were tested and investigated using physico-chemical methods, such as infrared spectroscopy, X-ray diffraction, contact angle measurements, absorption, and fluorescence spectroscopy in the visible region. The composition of an optimal material was as follows: nODTMA/mSap = 0.8 mmol g-1 and nPhB/mSap = 0.1 mmol g-1. Only about 1.5% of present PhB was released in a cultivation medium for bacteria within 24 h, which proved good stability of the composite. Anti-biofilm properties of the composite membranes were proven in experiments with resistant Staphylococcus aureus. The composites without PhB reduced the biofilm growth 100-fold compared to the control sample (non-modified PU). The composite containing PhB in combination with the photodynamic inactivation (PDI) reduced cell growth by about 10,000-fold, thus proving the significant photosensitizing effect of the membranes. Cell damage was confirmed by scanning electron microscopy. A new method of the synthesis of composite materials presented in this work opens up new possibilities for targeted modification of polymers by focusing on their surfaces. Such composite materials retain the properties of the unmodified polymer inside the matrix and only the surface of the material is changed. Although these unique materials presented in this work are based on PU, the method of surface modification can also be applied to other polymers. Such modified polymers could be useful for various applications in which special surface properties are required, for example, for materials used in medical practice.
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Affiliation(s)
- Nitin Chandra Teja Dadi
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 842 15 Bratislava, Slovakia;
| | - Juraj Bujdák
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 842 15 Bratislava, Slovakia
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská Cesta 9, 845 36 Bratislava, Slovakia; (H.P.); (M.B.)
| | - Veronika Medvecká
- Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, 842 48 Bratislava, Slovakia;
| | - Helena Pálková
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská Cesta 9, 845 36 Bratislava, Slovakia; (H.P.); (M.B.)
| | - Martin Barlog
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská Cesta 9, 845 36 Bratislava, Slovakia; (H.P.); (M.B.)
| | - Helena Bujdáková
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 842 15 Bratislava, Slovakia;
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11
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Leanse LG, Dos Anjos C, Wang Y, Murray CK, Hooper DC, Dai T. Effective treatment of cutaneous mold infections by antimicrobial blue light that is potentiated by quinine. J Infect Dis 2021; 224:1069-1076. [PMID: 33528496 DOI: 10.1093/infdis/jiab058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 01/26/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Cutaneous mold infections commonly result from an array of traumatic injuries that involve direct inoculation of contaminated soil into wounds. Here, we explored the use of antimicrobial blue light (aBL; 405 nm wavelength) and the combination of aBL with quinine hydrochloride (aBL + Q-HCL) for the treatment of cutaneous mold infections. METHODS Efficacy of aBL and aBL + Q-HCL in killing clinically important pathogenic molds (Aspergillus fumigatus, Aspergillus flavus, and Fusarium oxyprorum) was investigated. Ultra-performance liquid chromatography (UPLC) identified and quantified endogenous porphyrins in the mold conidia. Finally, a mouse model of dermabrasion wound infected with a bioluminescent variant of A. fumigatus was developed to investigate the efficacy of aBL in treating cutaneous mold infections. RESULTS We demonstrated that mold conidia are tolerant to aBL, but Q-HCL enhances efficacy. Transmission electron microscopy revealed intracellular damage by aBL. aBL + Q-HCL resulted in intracellular and cell wall damage. Porphyrins were observed in all mold strains, with A. fumigatus having the highest concentration. aBL and aBL + Q-HCL effectively reduced the burden of A. fumigatus within an established dermabrasion infection that limited recurrence post-treatment. CONCLUSIONS aBL and aBL + Q-HCL may offer a novel approach for the treatment of mold infections.
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Affiliation(s)
- Leon G Leanse
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA.,Vaccine and Immunotherapy Center, Massachusetts General Hospital, Harvard Medical School, Boston, USA
| | - Carolina Dos Anjos
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA.,Vaccine and Immunotherapy Center, Massachusetts General Hospital, Harvard Medical School, Boston, USA.,Department of Internal Medicine, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil
| | - Ying Wang
- Department of Laser Medicine, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | | | - David C Hooper
- Division of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Tianhong Dai
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA.,Vaccine and Immunotherapy Center, Massachusetts General Hospital, Harvard Medical School, Boston, USA
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12
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Leanse LG, Zeng X, Dai T. Potentiated antimicrobial blue light killing of methicillin resistant Staphylococcus aureus by pyocyanin. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 215:112109. [PMID: 33486397 DOI: 10.1016/j.jphotobiol.2020.112109] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 11/11/2020] [Accepted: 12/18/2020] [Indexed: 12/23/2022]
Abstract
As antimicrobial resistance continues to threaten the efficacy of conventional antibiotic therapy, it is paramount that we investigate innovative approaches to treat infectious diseases. In this study, we investigated the antimicrobial capabilities of the innovative combination of antimicrobial blue light (aBL; 405 nm wavelength) with the Pseudomonas aeruginosa pigment pyocyanin against methicillin resistant Staphylococcus aureus (MSRA. We explored the effects of different radiant exposures of aBL and increasing concentrations of pyocyanin against planktonic cells and those within biofilms. In addition, we investigated the effect of the aBL/pyocyanin on the endogenous staphyloxanthin pigment, as well as the role of hydrogen peroxide and singlet oxygen scavenging in the efficacy of this combination. Lastly, we investigated the potential for the aBL/pyocyanin to reduce the MRSA burden within a proof-of-principle mouse abrasion infection model. We found pyocyanin to be a powerful potentiator of aBL activity under all in vitro conditions tested. In addition, we serendipitously discovered the capability of the aBL/pyocyanin combination to bleach staphyloxanthin within colonies of MRSA. Furthermore, we established that singlet oxygen is an important mediator during combined aBL/pyocyanin exposure. Moreover, we found that the combination of aBL and pyocyanin could significantly reduce the viability of MRSA within a proof-of-principle early onset MRSA skin abrasion infection. Exposure to the treatment did not have deleterious effects on skin tissue. In conclusion, the combination of aBL and pyocyanin represents a potentially powerful therapeutic modality for the treatment of infections caused by MRSA.
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Affiliation(s)
- Leon G Leanse
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA; Vaccine and Immunotherapy Center, Massachusetts General Hospital, Harvard Medical School, Boston, USA
| | - Xiaojing Zeng
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA; School of Medicine, Shanghai Jiao Tong University, China
| | - Tianhong Dai
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA; Vaccine and Immunotherapy Center, Massachusetts General Hospital, Harvard Medical School, Boston, USA.
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13
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Hirose M, Yoshida Y, Horii K, Hasegawa Y, Shibuya Y. Efficacy of antimicrobial photodynamic therapy with Rose Bengal and blue light against cariogenic bacteria. Arch Oral Biol 2020; 122:105024. [PMID: 33352361 DOI: 10.1016/j.archoralbio.2020.105024] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/04/2020] [Accepted: 12/05/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVE We evaluated the effect of antimicrobial photodynamic therapy (a-PDT) with Rose Bengal and blue light LED on bacteria that initiate and promote dental caries. DESIGN Colony forming units of Streptococcus mutans, Streptococcus sobrinus, Streptococcus sanguinis, and Lactobacillus salivarius under planktonic and biofilm conditions were counted after a-PDT treatment using Rose Bengal and blue light LED. In addition, cariogenic bacteria from saliva and dental plaques from ten volunteers were used for evaluation of a-PDT treatment. RESULTS We found that a-PDT using Rose Bengal at > 10 μg/mL had antimicrobial effects on oral Gram-positive S. mutans, S. sobrinus, S. sanguinis, and L. salivarius under both planktonic and biofilm conditions. The effect was also observed for cariogenic bacteria that formed biofilms containing water-insoluble glucans, through which the bacteria are firmly attached to the tooth surface. Moreover, a-PDT led to a marked reduction in cariogenic bacteria in saliva and dental plaques. CONCLUSION a-PDT could be a useful approach for controlling dental caries in dental surgery.
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Affiliation(s)
- Marina Hirose
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Japan; Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yasuo Yoshida
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Japan.
| | - Kouichiro Horii
- Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yoshiaki Hasegawa
- Department of Microbiology, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Yasuyuki Shibuya
- Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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14
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Dong X, Edmondson R, Yang F, Tang Y, Wang P, Sun YP, Yang L. Carbon dots for effective photodynamic inactivation of virus. RSC Adv 2020; 10:33944-33954. [PMID: 35519058 PMCID: PMC9056736 DOI: 10.1039/d0ra05849a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 09/02/2020] [Indexed: 12/23/2022] Open
Abstract
The antiviral function of carbon dots (CDots) with visible light exposure was evaluated, for which the model bacteriophages MS2 as a surrogate of small RNA viruses were used. The results show clearly that the visible light-activated CDots are highly effective in diminishing the infectivity of MS2 in both low and high titer samples to the host E. coli cells, and the antiviral effects are dot concentration- and treatment time-dependent. The action of CDots apparently causes no significant damage to the structural integrity and morphology of the MS2 phage or the breakdown of the capsid proteins, but does result in the protein carbonylation (a commonly used indicator for protein oxidation) and the degradation of viral genomic RNA. Mechanistically the results may be understood in the framework of photodynamic effects that are associated with the unique excited state properties and processes of CDots. Opportunities for potentially broad applications of CDots coupled with visible/natural light in the prevention and control of viral transmission and spread are highlighted and discussed. The antiviral function of carbon dots (CDots) with visible light exposure was evaluated, for which the model bacteriophages MS2 as a surrogate of small RNA viruses were used.![]()
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Affiliation(s)
- Xiuli Dong
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technology Enterprise (BRITE), North Carolina Central University Durham NC 27707 USA +1-919-530-6705 +1-919-530-6704
| | | | - Fan Yang
- Department of Chemistry, Laboratory for Emerging Materials and Technology, Clemson University Clemson SC 29634 USA +1-864-656-5026
| | - Yongan Tang
- Department of Mathematics and Physics, North Carolina Central University Durham NC 27707 USA
| | - Ping Wang
- Department of Chemistry, Laboratory for Emerging Materials and Technology, Clemson University Clemson SC 29634 USA +1-864-656-5026
| | - Ya-Ping Sun
- Department of Chemistry, Laboratory for Emerging Materials and Technology, Clemson University Clemson SC 29634 USA +1-864-656-5026
| | - Liju Yang
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technology Enterprise (BRITE), North Carolina Central University Durham NC 27707 USA +1-919-530-6705 +1-919-530-6704
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15
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Matsuo H, Hirose T, Mokudai T, Nonaka K, Niwano Y, Sunazuka T, Takahashi Y, Ōmura S, Nakashima T. Absolute structure and anti-oxidative activity of chaetochiversin C isolated from fungal strain Neocosmospora sp. FKI-7792 by physicochemical screening. J GEN APPL MICROBIOL 2020; 66:181-187. [PMID: 31735764 DOI: 10.2323/jgam.2019.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A new chaetochiversin analog, designated chaetochiversin C (1), was discovered from a cultured broth of fungal strain FKI-7792 by physicochemical screening. This strain was identified as a member of genus Neocosmospora based on morphology and DNA barcoding. The partially relative configuration of 1 was determined by 13C-NMR chemical shifts of the acetonide analog of 1. The absolute configuration was determined using an advanced Mosher's method. Compound 1 was assessed for anti-tumor, anti-microbial, and anti-malarial activities, and its ability to scavenge or quench reactive oxygen species (ROS), such as superoxide anion radicals, hydroxy radicals and singlet oxygen (1O2). Compound 1 showed a quenching effect on 1O2.
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Affiliation(s)
- Hirotaka Matsuo
- Kitasato Institute for Life Sciences, Kitasato University.,Graduate School of Infection Control Sciences, Kitasato University
| | - Tomoyasu Hirose
- Kitasato Institute for Life Sciences, Kitasato University.,Graduate School of Infection Control Sciences, Kitasato University
| | | | - Kenichi Nonaka
- Kitasato Institute for Life Sciences, Kitasato University.,Graduate School of Infection Control Sciences, Kitasato University
| | | | - Toshiaki Sunazuka
- Kitasato Institute for Life Sciences, Kitasato University.,Graduate School of Infection Control Sciences, Kitasato University
| | - Yōko Takahashi
- Kitasato Institute for Life Sciences, Kitasato University
| | - Satoshi Ōmura
- Kitasato Institute for Life Sciences, Kitasato University
| | - Takuji Nakashima
- Kitasato Institute for Life Sciences, Kitasato University.,Graduate School of Infection Control Sciences, Kitasato University
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16
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Pluronic-based graphene oxide-methylene blue nanocomposite for photodynamic/photothermal combined therapy of cancer cells. Photodiagnosis Photodyn Ther 2020; 29:101640. [DOI: 10.1016/j.pdpdt.2019.101640] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 12/08/2019] [Accepted: 12/27/2019] [Indexed: 12/12/2022]
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17
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Reis ACM, Regis WFM, Rodrigues LKA. Scientific evidence in antimicrobial photodynamic therapy: An alternative approach for reducing cariogenic bacteria. Photodiagnosis Photodyn Ther 2019; 26:179-189. [DOI: 10.1016/j.pdpdt.2019.03.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 03/08/2019] [Accepted: 03/15/2019] [Indexed: 02/07/2023]
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18
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Lacerda Rangel Esper MÂ, Junqueira JC, Uchoa AF, Bresciani E, Nara de Souza Rastelli A, Navarro RS, de Paiva Gonçalves SE. Photodynamic inactivation of planktonic cultures and Streptococcus mutans biofilms for prevention of white spot lesions during orthodontic treatment: An in vitro investigation. Am J Orthod Dentofacial Orthop 2019; 155:243-253. [PMID: 30712696 DOI: 10.1016/j.ajodo.2018.03.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 03/01/2018] [Accepted: 03/01/2018] [Indexed: 12/27/2022]
Abstract
INTRODUCTION This study evaluated the efficacy of photodynamic inactivation (PDI) with hematoporphyrin IX (H) and modified hematoporphyrin IX (MH) at 10 μmol/L, using a blue light-emitting diode (LED), fluence of 75 J/cm,2 over planktonic cultures and biofilm of Streptococcus mutans (UA 159). METHODS Suspensions containing 107 cells/mL were tested under different experimental conditions: a) H and LED (H+L+), b) MH and LED (MH+L+), c) only LED (P-L+), d) only H (H+L-), e) only MH (MH+L-), and f) control group, no LED or photosensitizer treatment (P-L-). The study also evaluated the effect of PDI on S mutans biofilm on metallic or ceramic brackets bonded on specimens of human teeth. The strains were seeded onto Mitis salivarius-bacitracin-sacarose agar to determine the number of colony-forming units. RESULTS H and MH under LED irradiation were effective on planktonic cultures (P <0.0001). H and MH (H+L+ and MH+L+) caused a reduction of 3.80 and 6.78 log10 CFU/mL. PDI with the use of H or MH and LED exerted a strong antimicrobial effect over S mutans showing 54% and 100% reduction, respectively. PDI on S mutans biofilm on metallic and ceramic brackets with the use of H was not effective (P = 0.0162, P = 0.1669), however, MH caused a significant reduction of 44% and 53% of the cell count on metallic and ceramic brackets, respectively (P = 0.0020, P = 0.004). CONCLUSIONS In vitro planktonic cultures with the use of H or MH and LED exerted significant antimicrobial activity. No effect was observed on S mutans biofilm on either bracket type with the use of H, MH showed better results, suggesting a promising use against dental caries and white spot lesions.
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Affiliation(s)
| | - Juliana Campos Junqueira
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University, São Paulo, Brazil
| | | | - Eduardo Bresciani
- Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University, São Paulo, Brazil
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Romão IQ, Cavalcante SIA, Leite HLA, Gonçalves LM, Branco-de-Almeida LS, Paschoal MAB. Effect of Combining Erythrosine with a High-Power Dental Curing Light Appliance on the Viability of a Planktonic Culture of Streptococcus mutans. Photomed Laser Surg 2018; 36:676-679. [DOI: 10.1089/pho.2018.4517] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Affiliation(s)
| | | | | | | | | | - Marco Aurelio Benini Paschoal
- Department of Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte–MG, Brazil
- Post Graduate Program in Dentistry, CEUMA University, São Luis–MA, Brazil
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20
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Miyano R, Matsuo H, Nonaka K, Mokudai T, Niwano Y, Shiomi K, Takahashi Y, Ōmura S, Nakashima T. Pochoniolides A and B, new antioxidants from the fungal strain Pochonia chlamydosporia var. spinulospora FKI-7537. J Biosci Bioeng 2018; 126:661-666. [DOI: 10.1016/j.jbiosc.2018.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 05/01/2018] [Accepted: 05/03/2018] [Indexed: 11/28/2022]
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21
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Silva AF, Borges A, Freitas CF, Hioka N, Mikcha JMG, Simões M. Antimicrobial Photodynamic Inactivation Mediated by Rose Bengal and Erythrosine Is Effective in the Control of Food-Related Bacteria in Planktonic and Biofilm States. Molecules 2018; 23:molecules23092288. [PMID: 30205468 PMCID: PMC6225188 DOI: 10.3390/molecules23092288] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 08/28/2018] [Accepted: 09/05/2018] [Indexed: 12/19/2022] Open
Abstract
The thermal and chemical-based methods applied for microbial control in the food industry are not always environmentally friendly and may change the nutritional and organoleptic characteristics of the final products. Moreover, the efficacy of sanitizing agents may be reduced when microbial cells are enclosed in biofilms. The objective of this study was to investigate the effect of photodynamic inactivation, using two xanthene dyes (rose bengal and erythrosine) as photosensitizing agents and green LED as a light source, against Staphylococcus aureus, Listeria innocua, Enterococcus hirae and Escherichia coli in both planktonic and biofilm states. Both photosensitizing agents were able to control planktonic cells of all bacteria tested. The treatments altered the physicochemical properties of cells surface and also induced potassium leakage, indicating damage of cell membranes. Although higher concentrations of the photosensitizing agents (ranging from 0.01 to 50.0 μmol/L) were needed to be applied, the culturability of biofilm cells was reduced to undetectable levels. This finding was confirmed by the live/dead staining, where propidium iodide-labeled bacteria numbers reached up to 100%. The overall results demonstrated that photoinactivation by rose bengal and erythrosine may be a powerful candidate for the control of planktonic cells and biofilms in the food sector.
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Affiliation(s)
- Alex Fiori Silva
- Postgraduate Program of Health Sciences, State University of Maringá, Av. Colombo, 5790, Maringá 87020-900, Paraná, Brazil.
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
| | - Anabela Borges
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
| | - Camila Fabiano Freitas
- Department of Chemistry, State University of Maringa, Av. Colombo, 5790, Maringá 87020-900, Paraná, Brazil.
| | - Noboru Hioka
- Department of Chemistry, State University of Maringa, Av. Colombo, 5790, Maringá 87020-900, Paraná, Brazil.
| | - Jane Martha Graton Mikcha
- Postgraduate Program of Health Sciences, State University of Maringá, Av. Colombo, 5790, Maringá 87020-900, Paraná, Brazil.
| | - Manuel Simões
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
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22
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Pibiri I, Buscemi S, Palumbo Piccionello A, Pace A. Photochemically Produced Singlet Oxygen: Applications and Perspectives. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201800076] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ivana Pibiri
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche - STEBICEF; Università degli Studi di Palermo; Viale delle Scienze, Edificio 17 - 90128 Palermo Italy
| | - Silvestre Buscemi
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche - STEBICEF; Università degli Studi di Palermo; Viale delle Scienze, Edificio 17 - 90128 Palermo Italy
| | - Antonio Palumbo Piccionello
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche - STEBICEF; Università degli Studi di Palermo; Viale delle Scienze, Edificio 17 - 90128 Palermo Italy
| | - Andrea Pace
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche - STEBICEF; Università degli Studi di Palermo; Viale delle Scienze, Edificio 17 - 90128 Palermo Italy
- Dipartimento di Scienze per l'Innovazione Tecnologica; Istituto EuroMediterraneo di Scienza e Tecnologia - IEMEST; Via Michele Miraglia, 20 - 90139 - Palermo Italy
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23
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Fungicidal effect of combined nano TiO2 with erythrosine for mediated photodynamic therapy on Candida albicans: an in vitro study. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s41547-017-0014-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Occhi-Alexandre IGP, Baesso ML, Sato F, de Castro-Hoshino LV, Rosalen PL, Terada RSS, Neto AM, Fujimaki M. Evaluation of photosensitizer penetration into sound and decayed dentin: A photoacoustic spectroscopy study. Photodiagnosis Photodyn Ther 2017; 21:108-114. [PMID: 29170013 DOI: 10.1016/j.pdpdt.2017.11.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 11/14/2017] [Accepted: 11/17/2017] [Indexed: 01/25/2023]
Abstract
BACKGROUND Photodynamic therapy (PDT) may have topical indications. In those cases it is important for a topical photosensitizer to penetrate into the tissue to which it has been applied. This study aimed to compare the penetration of two different concentrations of erythrosine into intact and in vitro decayed dentin samples. METHODS This in vitro study evaluated erythrosine (0.3 and 5%) penetration into sound (intact) and decayed dentin. A total of 11 dentin discs were prepared and divided into two equal halves, in order to keep one half sound while the other half was submitted to sterilization and an in vitro demineralization model for 5 days. Before erythrosine application, the organic and inorganic composition of all samples was evaluated by Fourier Transform Raman spectroscopy, and after erythrosine application for 30 min, the penetration depth was determined by Photoacoustic spectroscopy technique. RESULTS The results indicated that 0.3% erythrosine showed a higher penetration depth into sound dentin (p = 0.002); and 5% erythrosine higher penetration into decayed dentin (p < 0.001). However considering clinical parameters, no statistically significant difference was found between any of the conditions tested. CONCLUSIONS Erythrosine demonstrated ability to penetrate into dentin, irrespective of sound or decayed condition. Photoacoustic spectroscopy can be considered a method for estimating the penetration into hard tissues, and in conjunction with Raman spectroscopy, these are effective methods for evaluating the spectral response of dentin. Considering that erythrosine is capable of penetrating into decayed dentin, clinical trials are needed to test the effectiveness of this photosensitizer in Photodynamic therapy and Antimicrobial Photodynamic therapy.
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Affiliation(s)
| | - Mauro Luciano Baesso
- Physics Department, State University of Maringá, Avenida Colombo, 5790 - Jardim Universitário, Maringá, PR, CEP 87020-900, Brazil
| | - Francielle Sato
- Physics Department, State University of Maringá, Avenida Colombo, 5790 - Jardim Universitário, Maringá, PR, CEP 87020-900, Brazil
| | | | - Pedro Luiz Rosalen
- Physiological Sciences Department, School of Dentistry of Piracicaba, University of Campinas, Avenida Limeira, 901 - Bairro Areião, Piracicaba, SP, CEP 13414-903, Brazil
| | - Raquel Sano Suga Terada
- Dentistry Department, State University of Maringá, Avenida Colombo, 5790 - Jardim Universitário, Maringá, PR, CEP 87020-900, Brazil
| | - Antonio Medina Neto
- Physics Department, State University of Maringá, Avenida Colombo, 5790 - Jardim Universitário, Maringá, PR, CEP 87020-900, Brazil
| | - Mitsue Fujimaki
- Dentistry Department, State University of Maringá, Avenida Colombo, 5790 - Jardim Universitário, Maringá, PR, CEP 87020-900, Brazil.
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25
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Karlsson JKG, Woodford OJ, Al-Aqar R, Harriman A. Effects of Temperature and Concentration on the Rate of Photobleaching of Erythrosine in Water. J Phys Chem A 2017; 121:8569-8576. [DOI: 10.1021/acs.jpca.7b06440] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Joshua K. G. Karlsson
- Molecular Photonics Laboratory,
School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Owen J. Woodford
- Molecular Photonics Laboratory,
School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Roza Al-Aqar
- Molecular Photonics Laboratory,
School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Anthony Harriman
- Molecular Photonics Laboratory,
School of Chemistry, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, United Kingdom
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26
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Shirato M, Nakamura K, Kanno T, Lingström P, Niwano Y, Örtengren U. Time-kill kinetic analysis of antimicrobial chemotherapy based on hydrogen peroxide photolysis against Streptococcus mutans biofilm. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 173:434-440. [DOI: 10.1016/j.jphotobiol.2017.06.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 06/15/2017] [Accepted: 06/21/2017] [Indexed: 01/01/2023]
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27
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Tseng SP, Hung WC, Chen HJ, Lin YT, Jiang HS, Chiu HC, Hsueh PR, Teng LJ, Tsai JC. Effects of toluidine blue O (TBO)-photodynamic inactivation on community-associated methicillin-resistant Staphylococcus aureus isolates. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2017; 50:46-54. [DOI: 10.1016/j.jmii.2014.12.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 12/25/2014] [Accepted: 12/26/2014] [Indexed: 12/13/2022]
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28
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Jeffet U, Nasrallah R, Sterer N. Effect of red dyes on blue light phototoxicity against VSC producing bacteria in an experimental oral biofilm. J Breath Res 2016; 10:046011. [DOI: 10.1088/1752-7155/10/4/046011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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29
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Sherman I, Gerchman Y, Sasson Y, Gnayem H, Mamane H. Disinfection and Mechanistic Insights ofEscherichia coliin Water by Bismuth Oxyhalide Photocatalysis. Photochem Photobiol 2016; 92:826-834. [DOI: 10.1111/php.12635] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 07/31/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Ilana Sherman
- School of Mechanical Engineering; Tel Aviv University; Tel Aviv Israel
- The Water Research Center at Tel-Aviv University; Tel Aviv Israel
| | - Yoram Gerchman
- Department of Biology and Environment; Faculty of Natural Sciences; University of Haifa, Oranim; Tivon Israel
| | - Yoel Sasson
- Casali center of Applied Chemistry; The Institute of Chemistry; The Hebrew University of Jerusalem; Jerusalem Israel
| | - Hani Gnayem
- Casali center of Applied Chemistry; The Institute of Chemistry; The Hebrew University of Jerusalem; Jerusalem Israel
| | - Hadas Mamane
- School of Mechanical Engineering; Tel Aviv University; Tel Aviv Israel
- The Water Research Center at Tel-Aviv University; Tel Aviv Israel
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30
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Streptococcus mutans photoinactivation using a combination of a high potency photopolymerizer and rose bengal. Photodiagnosis Photodyn Ther 2016; 15:11-2. [DOI: 10.1016/j.pdpdt.2016.05.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 04/30/2016] [Accepted: 05/03/2016] [Indexed: 01/25/2023]
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31
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Rose bengal uptake by E. faecalis and F. nucleatum and light-mediated antibacterial activity measured by flow cytometry. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 162:258-265. [PMID: 27394008 DOI: 10.1016/j.jphotobiol.2016.06.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 06/20/2016] [Accepted: 06/22/2016] [Indexed: 01/10/2023]
Abstract
Antibacterial photodynamic therapy (aPDT) using rose bengal (RB) and blue-light kills bacteria through the production of reactive oxygen derivates. However, the interaction mechanism of RB with bacterial cells remains unclear. This study investigated the uptake efficiency and the antibacterial activity of blue light-activated RB against Enterococcus faecalis and Fusobacterium nucleatum. Spectrophotometry and epifluorescence microscopy were used to evaluate binding of RB to bacteria. The antibacterial activity of RB after various irradiation times was assessed by flow cytometry in combination with cell sorting. Uptake of RB increased in a concentration dependent manner in both strains although E. faecalis displayed higher uptake values. RB appeared to bind specific sites located at the cellular poles of E. faecalis and at regular intervals along F. nucleatum. Blue-light irradiation of samples incubated with RB significantly reduced bacterial viability. After incubation with 10μM RB and 240s irradiation, only 0.01% (±0.01%) of E. faecalis cells and 0.03% (±0.03%) of F. nucleatum survived after treatment. This study indicated that RB can bind to E. faecalis and F. nucleatum in a sufficient amount to elicit effective aPDT. Epifluorescence microscopy showed a yet-unreported property of RB binding to bacterial membranes. Flow cytometry allowed the detection of bacteria with damaged membranes that were unable to form colonies on agars after cell sorting.
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32
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Galli M, Moschini E, Dozzi MV, Arosio P, Panigati M, D'Alfonso L, Mantecca P, Lascialfari A, D'Alfonso G, Maggioni D. SPIO@SiO2–Re@PEG nanoparticles as magneto-optical dual probes and sensitizers for photodynamic therapy. RSC Adv 2016. [DOI: 10.1039/c6ra04332a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A superparamagnetic iron oxide core and a photoluminescent rhenium complex embedded in a silica shell are the active components of a dual magneto-optical nanoprobe, also able to generate singlet oxygen upon irradiation.
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Affiliation(s)
- Marco Galli
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Elisa Moschini
- Dipartimento di Scienze dell'Ambiente e del Territorio e di Scienze della Terra
- Università degli Studi di Milano-Bicocca
- 20126 Milano
- Italy
| | | | - Paolo Arosio
- Dipartimento di Fisica
- Università degli Studi di Milano
- 20133 Milano
- Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali
| | - Monica Panigati
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali
| | - Laura D'Alfonso
- Dipartimento di Fisica
- Università degli Studi di Milano-Bicocca
- 20126 Milano
- Italy
| | - Paride Mantecca
- Dipartimento di Scienze dell'Ambiente e del Territorio e di Scienze della Terra
- Università degli Studi di Milano-Bicocca
- 20126 Milano
- Italy
| | - Alessandro Lascialfari
- Dipartimento di Fisica
- Università degli Studi di Milano
- 20133 Milano
- Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali
| | - Giuseppe D'Alfonso
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali
| | - Daniela Maggioni
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali
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33
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ISHIYAMA KIRIKA, NAKAMURA KEISUKE, KANNO TARO, NIWANO YOSHIMI. Bactericidal Action of Photodynamic Antimicrobial Chemotherapy (PACT) with Photosensitizers Used as Plaque-Disclosing Agents against Experimental Biofilm. Biocontrol Sci 2016; 21:187-91. [DOI: 10.4265/bio.21.187] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
| | | | - TARO KANNO
- Tohoku University Graduate School of Dentistry
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34
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Uekubo A, Hiratsuka K, Aoki A, Takeuchi Y, Abiko Y, Izumi Y. Effect of antimicrobial photodynamic therapy using rose bengal and blue light-emitting diode on Porphyromonas gingivalis in vitro: Influence of oxygen during treatment. Laser Ther 2016; 25:299-308. [PMID: 28765675 DOI: 10.5978/islsm.16-or-25] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Aims: A combination of rose bengal (RB) and blue LED (BL) has emerged as a new technical modality for antimicrobial photodynamic therapy (a-PDT). The purpose of this study was to clarify the influence of oxygen on the antimicrobial effect of RB + BL treatment on Porphyromonas gingivalis in vitro.Materials and Methods:P. gingivalis cells were treated with RB, BL (450-470 nm; 1 W/cm2, 5 s), or RB + BL under anaerobic/aerobic conditions. Cells were incubated anaerobically, and the cell density (OD600 nm) was measured after 6-48 h. Additionally, cells were cultured anaerobically on blood agar plates for 9 days, and the resulting colonies were observed. Bacterial growth within 1 h of aerobic RB + BL treatment was examined, and RNA degradation due to anaerobic/aerobic RB + BL treatment was measured after 3 h of culture. Results: Under anaerobic conditions, RB + BL significantly suppressed bacterial growth after 18 h; however, the growth after 48 h and the number of colonies after 9 days were similar to those of the untreated control. RNA degradation in the anaerobic-treatment group was not significantly different from that in the control. Under aerobic conditions, RB + BL immediately affected bacterial growth and completely inhibited growth for up to 48 h. Few colonies were detected even after 9 days of culture, and RNA was completely degraded. Conclusions: Unlike the bacteriostatic effect of anaerobic treatment, aerobic RB + BL treatment may have a bactericidal action via a-PDT effect, resulting in the destruction of RNA and bacterial cells within a short period.
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Affiliation(s)
- Ayano Uekubo
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Koichi Hiratsuka
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Chiba, Japan
| | - Akira Aoki
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yasuo Takeuchi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yoshimitsu Abiko
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Chiba, Japan
| | - Yuichi Izumi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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35
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Katsuda Y, Niwano Y, Nakashima T, Mokudai T, Nakamura K, Oizumi S, Kanno T, Kanetaka H, Egusa H. Cytoprotective effects of grape seed extract on human gingival fibroblasts in relation to its antioxidant potential. PLoS One 2015; 10:e0134704. [PMID: 26258747 PMCID: PMC4530871 DOI: 10.1371/journal.pone.0134704] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 07/13/2015] [Indexed: 11/18/2022] Open
Abstract
Cytoprotective effects of short-term treatment with grape seed extract (GSE) upon human gingival fibroblasts (hGFs) were evaluated in relation to its antioxidant properties and compared with those of a water-soluble analog of vitamin E: trolox (Tx). GSE and Tx showed comparable antioxidant potential in vitro against di(phenyl)-(2,4,6-trinitrophenyl)iminoazanium (DPPH; a stable radical), hydroxyl radical (•OH), singlet oxygen (1O2), and hydrogen peroxide (H2O2). Pretreatment or concomitant treatment with GSE for 1 min protected hGFs from oxidative stressors, including H2O2, acid-electrolyzed water (AEW), and 1O2, and attenuated the intracellular formation of reactive oxygen species induced by H2O2 and AEW. Tx also reduced the H2O2- and AEW-induced intracellular formation of reactive oxygen species, but showed no cytoprotective effects on hGFs exposed to H2O2, AEW, or 1O2. These results suggest that the cytoprotective effects of GSE are likely exerted independently of its antioxidant potential.
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Affiliation(s)
- Yusuke Katsuda
- Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Yoshimi Niwano
- Tohoku University Graduate School of Dentistry, Sendai, Japan
- * E-mail:
| | - Takuji Nakashima
- Kiasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, Japan
| | | | | | - Satomi Oizumi
- Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Taro Kanno
- Tohoku University Graduate School of Dentistry, Sendai, Japan
| | | | - Hiroshi Egusa
- Tohoku University Graduate School of Dentistry, Sendai, Japan
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36
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Paschoal MA, Dantas TCB, Duarte S. Photodynamic and Tissue Tolerable Plasma Therapies as Alternatives to Antimicrobials to Control Pathogenic Biofilms. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/s40496-014-0043-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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37
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Maggioni D, Galli M, D'Alfonso L, Inverso D, Dozzi MV, Sironi L, Iannacone M, Collini M, Ferruti P, Ranucci E, D'Alfonso G. A luminescent poly(amidoamine)-iridium complex as a new singlet-oxygen sensitizer for photodynamic therapy. Inorg Chem 2015; 54:544-53. [PMID: 25554822 DOI: 10.1021/ic502378z] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A polymer complex (1P) was synthesized by binding bis(cyclometalated) Ir(ppy)2(+) fragments (ppy = 2-phenylpyridyl) to phenanthroline (phen) pendants of a poly(amidoamine) copolymer (PhenISA, in which the phen pendants involved ∼6% of the repeating units). The corresponding molecular complex [Ir(ppy)2(bap)](+) (1M, bap = 4-(butyl-4-amino)-1,10-phenanthroline) was also prepared for comparison. In water solution 1P gives nanoaggregates with a hydrodynamic diameter of 30 nm in which the lipophilic metal centers are presumed to be segregated within polymer tasks to reduce their interaction with water. Such confinement, combined with the dilution of triplet emitters along the polymer chains, led to 1P having a photoluminescence quantum yield greater than that of 1M (0.061 vs 0.034, respectively, in an aerated water solution) with a longer lifetime of the (3)MLCT excited states and a blue-shifted emission (595 nm vs 604 nm, respectively). NMR data supported segregation of the metal centers. Photoreaction of O2 with 1,5-dihydroxynaphthalene showed that 1P is able to sensitize (1)O2 generation but with half the quantum yield of 1M. Cellular uptake experiments showed that both 1M and 1P are efficient cell staining agents endowed with two-photon excitation (TPE) imaging capability. TPE microscopy at 840 nm indicated that both complexes penetrate the cellular membrane of HeLa cells, localizing in the perinuclear region. Cellular photodynamic therapy tests showed that both 1M and 1P are able to induce cell apoptosis upon exposure to Xe lamp irradiation. The fraction of apoptotic cells for 1M was higher than that for 1P (74 and 38%, respectively) 6 h after being irradiated for 5 min, but cells incubated with 1P showed much lower levels of necrosis as well as lower toxicity in the absence of irradiation. More generally, the results indicate that cell damage induced by 1M was avoided by binding the iridium sensitizers to the poly(amidoamine).
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Affiliation(s)
- Daniela Maggioni
- Dipartimento di Chimica, Università degli Studi di Milano , Via Golgi 19, 20133 Milano, Italy
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Zhang X, Huang C, Xu S, Chen J, Zeng Y, Wu P, Hou X. Photocatalytic oxidation of TMB with the double stranded DNA–SYBR Green I complex for label-free and universal colorimetric bioassay. Chem Commun (Camb) 2015; 51:14465-8. [DOI: 10.1039/c5cc06105a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The previously undiscovered photocatalytic activity of the classical dsDNA–SYBR Green complex for TMB oxidation was reported here for label-free and universal visual bioassays.
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Affiliation(s)
- Xinfeng Zhang
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- Chengdu 610059
- China
| | - Chengpeng Huang
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- Chengdu 610059
- China
| | - Shuxia Xu
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- Chengdu 610059
- China
| | - Junbo Chen
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Ying Zeng
- College of Materials and Chemistry & Chemical Engineering
- Chengdu University of Technology
- Chengdu 610059
- China
| | - Peng Wu
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Xiandeng Hou
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
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39
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Liu YC, Tu SY, Lin HY. Evaluation of the Practicality of Melanin as a Photodynamic-Inactivation Photosensitizer by Its Nanonization. J PHOTOPOLYM SCI TEC 2015. [DOI: 10.2494/photopolymer.28.739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yi-Cheng Liu
- Graduate Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University
- Institute of Atomic and Molecular Sciences, Academia Sinica
| | - Shih-Yu Tu
- Graduate Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University
| | - Hoang-Yan Lin
- Graduate Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University
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40
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Flow cytometric assessment of Streptococcus mutans viability after exposure to blue light-activated curcumin. Photodiagnosis Photodyn Ther 2014; 11:372-9. [PMID: 24973577 DOI: 10.1016/j.pdpdt.2014.06.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 06/11/2014] [Accepted: 06/13/2014] [Indexed: 01/10/2023]
Abstract
BACKGROUND Streptococcus mutans biofilms are considered as primary causative agents of dental caries. Photodynamic antimicrobial chemotherapy (PACT) has been recently proposed as a strategy for inactivating dental biofilms. This study aimed to investigate the effect of blue light-activated curcumin on S. mutans viability and to explore its potential as a new anti-caries therapeutic agent. The effect of different concentrations and incubation times of photo-activated curcumin on the survival of S. mutans in planktonic and biofilm models of growth was assessed by flow cytometry. METHODS Streptococcus mutans in planktonic suspensions or biofilms formed on hydroxyapatite disks were incubated for 5 or 10min with curcumin prior to blue light activation. Bacteria were labeled with SYTO 9 and propidium iodide before viability was assessed by flow cytometry. Results were statistically analyzed using one-way ANOVA and Tukey multiple comparison intervals (α=0.05). RESULTS For planktonic cultures, 0.2μM of light-activated curcumin significantly reduced S. mutans viability (p<0.05). For biofilm cultures, light-activated curcumin at concentration of 40-60μM only suppressed viability by 50% (p<0.05). Independently of the mode of growth, incubation time has no significant effect on PACT efficiency. CONCLUSION This study indicates that blue light-activated curcumin can efficiently inactivate planktonic cultures of S. mutans whereas biofilms were more resistant to treatment. Flow cytometry allowed the detection of bacteria with damaged membranes that were unable to replicate and grow after cell sorting. Further studies seem warranted to optimize the efficacy of light-activated curcumin against S. mutans biofilms.
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41
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Zigler DF, Ding EC, Jarocha LE, Khatmullin RR, DiPasquale VM, Sykes RB, Tarasov VF, Forbes MDE. Kinetic analysis of nitroxide radical formation under oxygenated photolysis: toward quantitative singlet oxygen topology. Photochem Photobiol Sci 2014; 13:1804-11. [DOI: 10.1039/c4pp00318g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction kinetics for two sterically hindered secondary amines with singlet oxygen have been studied in detail.
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Affiliation(s)
- David F. Zigler
- Department of Chemistry
- University of North Carolina at Chapel Hill
- Chapel Hill, USA
| | - Eva Chuheng Ding
- Department of Chemistry
- University of North Carolina at Chapel Hill
- Chapel Hill, USA
| | - Lauren E. Jarocha
- Department of Chemistry
- University of North Carolina at Chapel Hill
- Chapel Hill, USA
| | - Renat R. Khatmullin
- Department of Chemistry
- University of North Carolina at Chapel Hill
- Chapel Hill, USA
| | | | - R. Brendan Sykes
- Department of Chemistry
- University of North Carolina at Chapel Hill
- Chapel Hill, USA
| | - Valery F. Tarasov
- Department of Chemistry
- University of North Carolina at Chapel Hill
- Chapel Hill, USA
| | - Malcolm D. E. Forbes
- Department of Chemistry
- University of North Carolina at Chapel Hill
- Chapel Hill, USA
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42
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Javed F, Romanos GE. Does Photodynamic Therapy Enhance Standard Antibacterial Therapy in Dentistry? Photomed Laser Surg 2013; 31:512-8. [DOI: 10.1089/pho.2012.3329] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Fawad Javed
- Eng. A.B. Research Chair for Growth Factors and Bone Regeneration, 3D Imaging and Biomechanical Laboratory, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Georgios E. Romanos
- Department of Dental Medicine, School of Dental Medicine, Stony Brook University, Stony Brook, New York
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43
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Cui J, Jin J, Hsieh YH, Yang H, Ke B, Damera K, Tai PC, Wang B. Design, Synthesis and Biological Evaluation of Rose Bengal Analogues as SecA Inhibitors. ChemMedChem 2013; 8:1384-93. [DOI: 10.1002/cmdc.201300216] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Indexed: 11/06/2022]
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44
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Chui C, Aoki A, Takeuchi Y, Sasaki Y, Hiratsuka K, Abiko Y, Izumi Y. Antimicrobial effect of photodynamic therapy using high-power blue light-emitting diode and red-dye agent on Porphyromonas gingivalis. J Periodontal Res 2013; 48:696-705. [PMID: 23441868 DOI: 10.1111/jre.12055] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND OBJECTIVE Antimicrobial photodynamic therapy (a-PDT) using a combination of red-colored laser/light-emitting diode (LED) and blue dye has been employed for periodontal therapy and the antimicrobial effect seems promising. Blue light, which has favorable wavelength properties, would be more effective as a light source for a-PDT because blue light itself possesses an antimicrobial effect. This study aimed to investigate the effect of a-PDT using a novel combination of high-power blue LED and red-dye agent on Porphyromonas gingivalis in vitro. MATERIAL AND METHODS Porphyromonas gingivalis ATCC 33277 suspension was irradiated with blue LED (BL) (425-470 nm) or red LED (RL) (625-635 nm) at 30-90 J/cm(2) , or was mixed with erythrosine (ER), phloxine B (PB) or rose bengal (RB) with or without BL irradiation (30 J/cm(2) ). RL (30 J/cm(2) ) in combination with toluidine blue was employed as positive control. All the suspensions of P. gingivalis were serially diluted, plated and incubated anaerobically, and the numbers of colony-forming units (CFUs) were counted on day 7. RESULTS BL irradiation at 60 and 90 J/cm(2) demonstrated a significant reduction in the numbers of CFUs. ER, PB and RB solutions at 160 μg/mL showed almost no or only a minimal reduction in the numbers of CFUs. BL at 30 J/cm(2) combined with ER, PB or RB at 160 μg/mL resulted in a log reduction of 0.9, 1.0 and 7.1, respectively, in the numbers of CFUs; 30 J/cm(2) BL with RB at 1.6, 16 and 160 μg/mL demonstrated a log reduction of 6.3, 8.0 and 5.5, respectively; and a log reduction of 5.2 was obtained after 30 J/cm(2) RL with 16 μg/mL TB. CONCLUSION Within the limits of this study, BL was found to have an antimicrobial/growth-inhibiting effect on P. gingivalis, and a-PDT using a combination of BL and RB shows promise as a new technical modality for bacterial elimination in periodontal therapy.
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Affiliation(s)
- C Chui
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Global Center of Excellence (GCOE) Program, International Research Center for Molecular Science in Tooth and Bone Diseases, Tokyo Medical and Dental University, Tokyo, Japan
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