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Glowacka-Sobotta A, Ziental D, Czarczynska-Goslinska B, Michalak M, Wysocki M, Güzel E, Sobotta L. Nanotechnology for Dentistry: Prospects and Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2130. [PMID: 37513141 PMCID: PMC10383982 DOI: 10.3390/nano13142130] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023]
Abstract
In the XXI century, application of nanostructures in oral medicine has become common. In oral medicine, using nanostructures for the treatment of dental caries constitutes a great challenge. There are extensive studies on the implementation of nanomaterials to dental composites in order to improve their properties, e.g., their adhesive strength. Moreover, nanostructures are helpful in dental implant applications as well as in maxillofacial surgery for accelerated healing, promoting osseointegration, and others. Dental personal care products are an important part of oral medicine where nanomaterials are increasingly used, e.g., toothpaste for hypersensitivity. Nowadays, nanoparticles such as macrocycles are used in different formulations for early cancer diagnosis in the oral area. Cancer of the oral cavity-human squamous carcinoma-is the sixth leading cause of death. Detection in the early stage offers the best chance at total cure. Along with diagnosis, macrocycles are used for photodynamic mechanism-based treatments, which possess many advantages, such as protecting healthy tissues and producing good cosmetic results. Application of nanostructures in medicine carries potential risks, like long-term influence of toxicity on body, which need to be studied further. The introduction and development of nanotechnologies and nanomaterials are no longer part of a hypothetical future, but an increasingly important element of today's medicine.
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Affiliation(s)
- Arleta Glowacka-Sobotta
- Chair and Department of Orthodontics and Temporomandibular Disorders, Poznan University of Medical Sciences, Bukowska 70, 60-812 Poznan, Poland
| | - Daniel Ziental
- Chair and Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland
| | - Beata Czarczynska-Goslinska
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
| | - Maciej Michalak
- Chair and Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland
| | - Marcin Wysocki
- Chair and Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland
| | - Emre Güzel
- Department of Engineering Fundamental Sciences, Sakarya University of Applied Sciences, 54050 Sakarya, Türkiye
- Biomedical Technologies Application and Research Center (BIYOTAM), Sakarya University of Applied Sciences, 54050 Sakarya, Türkiye
| | - Lukasz Sobotta
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
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Wang N, Hao S, Zhang J, Yang J. Clinical efficacy of photodynamic therapy on halitosis: a systematic review and meta-analysis. Lasers Med Sci 2022; 38:29. [PMID: 36585474 DOI: 10.1007/s10103-022-03700-2] [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: 10/17/2022] [Accepted: 12/23/2022] [Indexed: 01/01/2023]
Abstract
Halitosis is a widespread health problem with complex factors, and therapeutic effects sometimes are unsatisfactory. Plenty of clinical trials have tried to prove the effectiveness of photodynamic therapy (PDT), but the results are indeterminate. This study aimed to evaluate the clinical efficacy of PDT on halitosis. We searched PubMed, Cochrane Library, Embase, Web of Science, and Scopus from inception to August 10, 2022, and only studies about the PDT on halitosis were included. The criteria for meta-analysis comprised randomized controlled trials (RCTs) comparing the treatment of PDT with tongue scraper (TS) immediately after the halitosis therapy and during a 7-, 14-, 30-, and 90-day follow-up. Eight eligible studies involving 345 patients were included in this study. It was shown that PDT (MD = - 34.49, 95% CI [- 66.34, - 2.64], P = 0.03) or PDT + TS (MD = - 67.72, 95% CI [- 101.17, - 34.28], P < 0.001) had better efficacy than TS on the H2S concentration reduction immediately after the halitosis therapy. No significant differences were observed in reducing the H2S among TS, PDT alone, and PDT + TS at the follow-up. Besides, no difference between PDT and TS was found in the reduction of CH3SCH3 and CH3SH. Based on the current evidence, PDT and PDT + TS demonstrate efficacy in the treatment of halitosis in the short term, and PDT was shown to be a beneficial and promising therapeutic method.
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Affiliation(s)
- Nini Wang
- State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Disease, Department of Periodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, Renmin South Road, Chengdu, 610041, China
- Department of Periodical Press and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Siyuan Hao
- State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Disease, Department of Periodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, Renmin South Road, Chengdu, 610041, China
- Department of Periodical Press and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Jinmei Zhang
- State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Disease, Department of Periodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, Renmin South Road, Chengdu, 610041, China
| | - Jingmei Yang
- State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Disease, Department of Periodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, Renmin South Road, Chengdu, 610041, China.
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Poormoradi B, Gholami L, Fekrazad R, Hooshyarfard A, Noorani AR, Loft Haghpanah Z, Farhadian M. Comparison of the Effect of Er,Cr:YSGG Laser and Halita Mouthwash on Oral Malodor in Patients With Chronic Periodontitis: A Randomized Clinical Trial. J Lasers Med Sci 2021; 12:e26. [PMID: 34733749 DOI: 10.34172/jlms.2021.26] [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] [Received: 10/30/2020] [Accepted: 03/09/2021] [Indexed: 11/09/2022]
Abstract
Introduction: Periodontal disease and tongue coatings are among the major factors associated with oral malodor. The present study, comparatively evaluated the effects of the Er,Cr:YSGG laser and Halita mouthwash as adjunctive treatments to nonsurgical periodontal debridement on oral malodor reduction in chronic periodontitis patients. Methods: Sixty patients with stage II and III chronic periodontitis and bad breath. The patients were randomly divided into two groups (n=30). After conventional scaling and root planing, patients in group 1 underwent Er,Cr:YSGG laser (Waterlase; Biolase, San Clemente, CA, USA) irradiation of the internal surface of the pockets (1.5 W, 30 Hz, 20% A, 40% W) and the dorsum of the tongue (1 W, 30 Hz, 20% A, 40% W) immediately after SRP and on the third and seventh days. Group 2 patients were asked to use Halita mouthwash twice daily for one week. Baseline, 1 and 3-month post-treatment measurements of plaque index (PI), probing pocket depth (PPD), clinical attachment level (CAL), gingival index (GI), bleeding on probing (BOP) and organoleptic assessment of Halitosis severity were performed. Results: Significant improvement in all parameters was noted in both groups after 1 and 3 months, compared with baseline (P < 0.05). The two groups had significant reductions which occurred in PPD, CAL and BOP levels and the organoleptic score in 1 and 3 months after the intervention (P < 0.05). Conclusion: Er,Cr:YSGG laser irradiation and Halita mouthwash as adjuncts to non-surgical periodontal therapy are both effective in the treatment of oral malodor and improvement of periodontal parameters.
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Affiliation(s)
- Banafsheh Poormoradi
- Dental Research Center, Department of Periodontology, Dentistry Faculty, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Leila Gholami
- Assistant Professor, Dental Research Center, Department of Periodontology, Dentistry Faculty, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Reza Fekrazad
- Radiation Sciences Research Center, Laser Research Center in Medical Sciences, AJA University of Medical Sciences, Tehran, Iran.,International Network for Photo Medicine and Photo Dynamic Therapy (INPMPDT), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Amirarsalan Hooshyarfard
- Dental Research Center, Department of Periodontology, Dentistry Faculty, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Ali Reza Noorani
- Orthodontic Department, Dentistry Faculty, Kashan University of Medical Sciences, Kashan, Iran
| | | | - Maryam Farhadian
- Department of Biostatistics, School of Public Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan, Iran
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Romero SDS, Schalch TO, do Vale KL, Ando ES, Mayer MPA, Feniar JPG, Fernandes KPS, Bussadori SK, Motta LJ, Negreiros RM, Tempestini Horliana ACR. Evaluation of halitosis in adult patients after treatment with photodynamic therapy associated with periodontal treatment: Protocol for a randomized, controlled, single-blinded trial with 3-month follow up. Medicine (Baltimore) 2019; 98:e16976. [PMID: 31574796 PMCID: PMC6775352 DOI: 10.1097/md.0000000000016976] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 08/06/2019] [Indexed: 11/25/2022] Open
Abstract
RATIONALE Halitosis is an unpleasant odor that emanates from the mouth. Studies show halitosis returns in a week, after treatment with PDT. Probably, bacteria living in the periodontal sulcus could recolonize the dorsum of the tongue. Until nowadays, there are no study in adult population that associates halitosis and periodontal treatment with follow-up evaluation. The aim of this randomized, controlled, single-blinded clinical trial is to treat oral halitosis in healthy adults with photodynamic therapy (PDT), associated with periodontal treatment and follow them up for 3 months. PATIENT CONCERNS:: the concerns assessments will be done over the study using anamnesis interviews and specific questionnaire. DIAGNOSES:: halitosis will be evaluated by OralChroma. INTERVENTIONS The participants (n = 40) with halitosis will be randomized into 2 groups: G1-treatment with PDT (n = 20) or G2-cleaning of the tongue with a tongue scraper (n = 20). OUTCOMES Halitosis will be evaluated by measuring volatile sulfur compounds using gas chromatography. After the treatments, a second evaluation will be performed, along with a microbiological analysis (RT-PCR) for the identification of the bacteria T. denticola. The assessment of halitosis and the microbiological analysis will be repeated. After that, patients will receive periodontal treatment. The participants will return after 1 week and 3 months for an additional evaluation. Quality of life will be measured by Oral Health Impact Profile questionnaire (OHIP-14). LESSONS This protocol will determine the effectiveness of phototherapy regarding the reduction of halitosis in adults. clinicaltrials.gov NCT03996915. ETHICS AND DISSEMINATION This protocol received approval from the Human Research Ethics Committee of Universidade Nove de Julho (certificate number: 3.257.104). The data will be published in a peer-reviewed periodical.
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Affiliation(s)
- Sergio dos Santos Romero
- Postgraduate program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
| | - Tânia Oppido Schalch
- Postgraduate program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
| | - Katia Llanos do Vale
- Postgraduate program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
| | - Ellen Sayuri Ando
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo
| | | | - Joanna Paula Gaba Feniar
- Assistant Professor of Specialization in Oral Maxillofacial Surgery and Traumatology at Fundecto – FFO, School of Dentistry – FOUSP, University of São Paulo, São Paulo, Brazil
| | | | - Sandra Kalil Bussadori
- Postgraduate program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
| | - Lara Jansiski Motta
- Postgraduate program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
| | - Renata Matalon Negreiros
- Postgraduate program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
- Assistant Professor of Specialization in Oral Maxillofacial Surgery and Traumatology at Fundecto – FFO, School of Dentistry – FOUSP, University of São Paulo, São Paulo, Brazil
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Kaufmann M, Lenherr P, Walter C, Thurnheer T, Attin T, Wiedemeier DB, Schmidlin PR. Comparing the Antimicrobial In Vitro Efficacy of Amoxicillin/Metronidazole against Azithromycin-A Systematic Review. Dent J (Basel) 2018; 6:E59. [PMID: 30347835 PMCID: PMC6313342 DOI: 10.3390/dj6040059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 09/19/2018] [Accepted: 09/25/2018] [Indexed: 11/16/2022] Open
Abstract
On account of its proven clinical efficacy, the combination of systemically administered amoxicillin and metronidazole is frequently adjuncted to non-operative periodontal therapy and well documented. Potential drawbacks of this regimen, e.g., side effects and problems with the compliance, led to an ongoing search for alternatives. Azithromycin, an antibiotic extensively used in general medicine, has recently found its niche in periodontal therapy as well. This systematic review aimed to analyze the in vitro antimicrobial efficacy of amoxicillin plus metronidazole versus azithromycin. For this purpose, a systematic literature search was performed, and studies published up to 29 March 2018 referenced in Medline, Embase, Cochrane, and Biosis were independently screened by two authors. An additional hand search was performed and studies focusing on the evaluation of in vitro antimicrobial efficacy of amoxicillin + metronidazole or azithromycin on bacteria from the subgingival biofilm were included. English and German language research reports were considered. From 71 identified articles, only three articles were eligible for inclusion. These studies showed heterogeneity in terms of analytical methods and strains explored. However, all studies used multispecies biofilm models for analysis of the antimicrobial activity. Unanimously, studies reported on more pronounced antimicrobial effects when applying the combination of amoxicillin + metronidazole, compared to azithromycin. Based on the few studies available, the combination of amoxicillin + metronidazole seemed to display higher antimicrobial efficacy in vitro than azithromycin.
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Affiliation(s)
- Manuela Kaufmann
- Clinic of Preventive Dentistry, Periodontology and Cariology, Center of Dental Medicine, University of Zurich, CH-8032 Zurich, Switzerland.
| | - Patrik Lenherr
- Private Practice, Zahnmedizin Wiesental, CH-9100 Herisau, Switzerland.
| | - Clemens Walter
- Department of Periodontology, Endodontology and Cariology, University Centre for Dental Medicine, University of Basel, CH-4056 Basel, Switzerland.
| | - Thomas Thurnheer
- Clinic of Preventive Dentistry, Periodontology and Cariology, Center of Dental Medicine, University of Zurich, CH-8032 Zurich, Switzerland.
| | - Thomas Attin
- Clinic of Preventive Dentistry, Periodontology and Cariology, Center of Dental Medicine, University of Zurich, CH-8032 Zurich, Switzerland.
| | - Daniel B Wiedemeier
- Statistical Services, Center of Dental Medicine, University of Zurich, CH-8032 Zurich, Switzerland.
| | - Patrick R Schmidlin
- Clinic of Preventive Dentistry, Periodontology and Cariology, Center of Dental Medicine, University of Zurich, CH-8032 Zurich, Switzerland.
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Ma L, Li F, Zhang X, Feng X. Biochemical characterization of a recombinant Lactobacillus acidophilus strain expressing exogenous FomA protein. Arch Oral Biol 2018; 92:25-31. [PMID: 29747062 DOI: 10.1016/j.archoralbio.2018.04.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 04/27/2018] [Accepted: 04/29/2018] [Indexed: 11/17/2022]
Abstract
In previous research, to combine the immunogenicity of Fusobacterium nucleatum (F. nucleatum) and the probiotic properties of Lactobacillus acidophilus (L. acidophilus), we constructed a FomA-expressing L. acidophilus strain and assessed its immunogenicity. Our findings indicated that oral administration of the recombinant L. acidophilus strain reduced the risk of periodontal infection by Porphyromonas gingivalis (P. gingivalis) and F. nucleatum. However, because the exogenous FomA is an heterologous protein for the original bacterium, in this study, we assessed whether the biochemical characteristics of the recombinant L. acidophilus strain change due to the expression of the exogenous FomA protein. OBJECTIVES To test the biochemical characteristics of a recombinant L. acidophilus strain expressing exogenous FomA and assess its antibiotic sensitivity. DESIGNS We assessed the colony morphology, growth, acid production, and carbohydrate fermentation abilities of the recombinant L. acidophilus strain. In addition, we tested the adhesive ability and antimicrobial activity of the recombinant and assessed its antibiotic sensitivity through a drug susceptibility test. RESULTS The experimental results showed that the colony and microscopic morphology of the recombinant L. acidophilus strain was consistent with the original strain, and the recombinant strain grew well when cultured under aerobic or anaerobic conditions, exhibiting a growth rate that was identical to that of the standard strain. Similarly, the supernatants of the recombinant L. acidophilus can inhibit the growth of E. coli and P. gingivalis at different concentrations, and the recombinant strain displayed essentially the same drug sensitivity profile as the original L. acidophilus. However, to our surprise, the recombinant strains exhibited a greater adhesion ability than the reference strain. CONCLUSIONS Our study demonstrated that, in addition to an increased adhesion ability, the recombinant L. acidophilus strain maintained the basic characteristics of the standard strain ATCC 4356, including antibiotic sensitivity. Thus, the recombinant strains have great potential to be utilized as a safe and effective periodontitis vaccine in the future.
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Affiliation(s)
- Li Ma
- Department of Preventive and Pediatric Dentistry, Stomatological Hospital of Tianjin Medical University, China
| | - Fei Li
- Department of Preventive Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, China
| | - Xiangyu Zhang
- Department of Preventive and Pediatric Dentistry, Stomatological Hospital of Tianjin Medical University, China
| | - Xiping Feng
- Department of Preventive Dentistry, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, China.
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Maliszewska I, Kałas W, Wysokińska E, Tylus W, Pietrzyk N, Popko K, Palewska K. Enhancement of photo-bactericidal effect of tetrasulfonated hydroxyaluminum phthalocyanine on Pseudomonas aeruginosa. Lasers Med Sci 2017; 33:79-88. [PMID: 28986706 DOI: 10.1007/s10103-017-2337-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 09/22/2017] [Indexed: 01/10/2023]
Abstract
At the present time, photodynamic inactivation (PDI) is receiving considerable interest for its potential as an antimicrobial therapy. The results of our study indicate that enhancement of the phototoxic effect on Pseudomonas aeruginosa can be achieved by combination of tetrasulfonated hydroxyaluminum phthalocyanine (AlPcS4) and bimetallic gold/silver nanoparticles (Au/Ag-NPs) synthesized by the cell-free filtrate of Aureobasidium pullulans. The bimetallic nanoparticles were characterized by a number of techniques including UV-vis, XPS, TEM, and SEM-EDS to be 14 ± 3 nm spherical particles coated with proteins. The effect of diode lasers with the peak-power wavelength ʎ = 650 nm (output power of 10 and 40 mW; radiation intensity of 26 and 105 mW/cm2) in combination with the AlPcS4 and the bimetallic nanoparticles mixture on the viability of P. aeruginosa rods was shown. Particularly high efficiency of killing bacterial cells was obtained for the light intensity of 105 mW/cm2, after 20, 30, and 40 min of irradiation corresponding to 126, 189, and 252 J/cm2 energy fluences. For AlPcS4+Au/Ag-NPs treatment, the viable count reduction were equal to 99.90, 99.96, and 99.975%, respectively. These results were significantly better than those accomplished for irradiated separated assays of AlPcS4 and Au/Ag-NPs.
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Affiliation(s)
- Irena Maliszewska
- Division of Medicinal Chemistry and Microbiology, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wroclaw, Poland.
| | - Wojciech Kałas
- Department of Experimental Oncology, Institute of Immunology and Experimental Therapy, Rudolfa Weigla 12, 53-114, Wroclaw, Poland
| | - Edyta Wysokińska
- Department of Experimental Oncology, Institute of Immunology and Experimental Therapy, Rudolfa Weigla 12, 53-114, Wroclaw, Poland
| | - Włodzimierz Tylus
- Faculty of Chemistry, Division of Advanced Material Technologies, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Natalia Pietrzyk
- Division of Medicinal Chemistry and Microbiology, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wroclaw, Poland
| | - Katarzyna Popko
- Division of Medicinal Chemistry and Microbiology, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wroclaw, Poland
| | - Krystyna Palewska
- Faculty of Chemistry, Advanced Materials Engineering and Modelling Group, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wroclaw, Poland
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Pérez-Laguna V, Pérez-Artiaga L, Lampaya-Pérez V, López SC, García-Luque I, Revillo MJ, Nonell S, Gilaberte Y, Rezusta A. Comparative effect of photodynamic therapy on separated or mixed cultures of Streptococcus mutans and Streptococcus sanguinis. Photodiagnosis Photodyn Ther 2017; 19:98-102. [DOI: 10.1016/j.pdpdt.2017.05.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 04/28/2017] [Accepted: 05/20/2017] [Indexed: 12/20/2022]
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Yang X, Zhang W, Zhao Z, Li N, Mou Z, Sun D, Cai Y, Wang W, Lin Y. Quercetin loading CdSe/ZnS nanoparticles as efficient antibacterial and anticancer materials. J Inorg Biochem 2017; 167:36-48. [DOI: 10.1016/j.jinorgbio.2016.11.023] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 11/11/2016] [Accepted: 11/16/2016] [Indexed: 12/31/2022]
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Costa da Mota AC, França CM, Prates R, Deana AM, Costa Santos L, Lopes Garcia R, Leal Gonçalves ML, Mesquita Ferrari RA, Porta Santos Fernandes K, Kalil Bussadori S. Effect of photodynamic therapy for the treatment of halitosis in adolescents - a controlled, microbiological, clinical trial. JOURNAL OF BIOPHOTONICS 2016; 9:1337-1343. [PMID: 27248838 DOI: 10.1002/jbio.201600067] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 05/05/2016] [Accepted: 05/06/2016] [Indexed: 06/05/2023]
Abstract
Halitosis can exert a negative influence on the social relations of adolescents and affect one's self-image. The aim of this study was to evaluate the clinical and microbiological effect of antimicrobial photodynamic therapy (aPDT) on halitosis in adolescents. Forty-six individuals aged 12 to 19 years were randomly allocated: Group 1 - treatment with photodynamic therapy; Group 2 - treatment with a tongue scraper and Group 3 - treatment with a tongue scraper and photodynamic therapy. The count of bacterial colony-forming units per milliliter was used for the microbiological analysis. Statistical analysis involved the Kruskal-Wallis test followed by the Student-Newman-Keuls test. ANOVA was used for the determination of colony-forming units after treatment. The level of significance for all statistical tests was 5% (p < 0.05). After treatment, a statistically significant reduction in total volatile sulfur compounds was found in all groups (p < 0.001), with the largest reduction (median: 0) found in Group 3 (tongue scraper and photodynamic therapy). Moreover, a statistically significant difference was found between treatment with aPDT and a tongue scraper alone (p < 0.001). The present findings demonstrate an option for the treatment of halitosis in adolescents, with an immediate effect and without the mechanical aggression to the toungue. Clinical Trials: NCT02007993.
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Affiliation(s)
| | - Cristiane Miranda França
- Biophotonics Applied to Science Health, Nove de Julho Universit, R. Vergueiro 235, São Paulo, Brasil
| | - Renato Prates
- Biophotonics Applied to Science Health, Nove de Julho Universit, R. Vergueiro 235, São Paulo, Brasil
| | - Alessandro Melo Deana
- Biophotonics Applied to Science Health, Nove de Julho Universit, R. Vergueiro 235, São Paulo, Brasil
| | - Larissa Costa Santos
- Biophotonics Applied to Science Health, Nove de Julho Universit, R. Vergueiro 235, São Paulo, Brasil
| | - Rubia Lopes Garcia
- Biophotonics Applied to Science Health, Nove de Julho Universit, R. Vergueiro 235, São Paulo, Brasil
| | | | | | | | - Sandra Kalil Bussadori
- Biophotonics Applied to Science Health, Nove de Julho Universit, R. Vergueiro 235, São Paulo, Brasil
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11
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Lopes RG, da Mota ACC, Soares C, Tarzia O, Deana AM, Prates RA, França CM, Fernandes KPS, Ferrari RAM, Bussadori SK. Immediate results of photodynamic therapy for the treatment of halitosis in adolescents: a randomized, controlled, clinical trial. Lasers Med Sci 2015; 31:41-7. [PMID: 26510574 DOI: 10.1007/s10103-015-1822-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 10/13/2015] [Indexed: 12/12/2022]
Abstract
UNLABELLED Light with or without chemical agents has been used to induce therapeutic and antimicrobial effects. With photodynamic therapy, the antimicrobial effect is confined to areas covered by a photosensitive dye and irradiated with light. The aim of the present study was to evaluate the effect of photodynamic therapy for the treatment of halitosis in adolescents through the analysis of volatile sulfur compounds, especially sulfide. A controlled, clinical trial was conducted with 45 adolescents randomly allocated to three groups: group 1, photodynamic therapy administered to the dorsum of the tongue; group 2, treatment with a tongue scraper; and group 3, treatment with a tongue scraper combined with photodynamic therapy. The diagnosis of halitosis was performed using gas chromatography before and after treatment. Comparisons were made using the Kruskal-Wallis test followed by the Student-Newman-Keuls test, with the level of significance set at 5 % (p < 0.05). After treatment, a statistically significant reduction in halitosis was found in all groups (p < 0.001). The greatest reduction in total sulfides (median = 0) occurred with the combination of tongue scraper and photodynamic therapy. The present study describes a novel option for the treatment of halitosis in adolescents with an immediate effect that does not involve the mechanical aggression of the lingual papillae that occurs with conventional treatment. TRIAL REGISTRATION Photodynamic Therapy in Adolescents Halitosis ( https://clinicaltrials.gov/ct2/show/NCT02007993?term=NCT02007993&rank=1 )Number: NCT02007993FUNDING:FAPESPNumber: 2013/13032-8.
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Affiliation(s)
- Rubia Garcia Lopes
- Biophotonics Applied to Science Health Post Graduation Program, Nove de Julho University, São Paulo, Brazil
| | - Ana Carolina Costa da Mota
- Biophotonics Applied to Science Health Post Graduation Program, Nove de Julho University, São Paulo, Brazil
| | - Carolina Soares
- Center of Excellence in the Treatment of Halitosis, São Paulo, Brazil
| | - Olinda Tarzia
- Center of Excellence in the Treatment of Halitosis, São Paulo, Brazil
| | - Alessandro Melo Deana
- Biophotonics Applied to Science Health Post Graduation Program, Nove de Julho University, São Paulo, Brazil
| | - Renato Araújo Prates
- Biophotonics Applied to Science Health Post Graduation Program, Nove de Julho University, São Paulo, Brazil
| | - Cristiane Miranda França
- Biophotonics Applied to Science Health Post Graduation Program, Nove de Julho University, São Paulo, Brazil
| | | | | | - Sandra Kalil Bussadori
- Biophotonics Applied to Science Health Post Graduation Program, Nove de Julho University, São Paulo, Brazil.
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Lopes RG, de Godoy CHL, Deana AM, de Santi MESO, Prates RA, França CM, Fernandes KPS, Mesquita-Ferrari RA, Bussadori SK. Photodynamic therapy as a novel treatment for halitosis in adolescents: study protocol for a randomized controlled trial. Trials 2014; 15:443. [PMID: 25394474 PMCID: PMC4236439 DOI: 10.1186/1745-6215-15-443] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 10/07/2014] [Indexed: 12/25/2022] Open
Abstract
Background Halitosis is a common problem that affects a large portion of the population worldwide. The origin of this condition is oral in 90% and systemic in 10% of cases. The unpleasant odor is mainly the result of volatile sulfur compounds produced by Gram-negative bacteria. However, it has recently been found that anaerobic Gram-positive bacteria also produce hydrogen sulfide (H2S) in the presence of amino acids, such as cysteine. Light, both with and without the use of chemical agents, has been used to induce therapeutic and antimicrobial effects. In photodynamic therapy, the antimicrobial effect is confined to areas covered by photosensitizing dye. The aim of the present study is to evaluate the antimicrobial effect of photodynamic therapy on halitosis in adolescents through the analysis of volatile sulfur compounds measured using gas chromatography and microbiological analysis of coated tongue. Methods/Design A quantitative clinical trial will be carried out involving 60 adolescents randomly divided into the following groups: group 1 will receive treatment with a tongue scraper, group 2 will receive photodynamic therapy applied to the posterior two-thirds of the dorsum of the tongue, and group 3 will receive combined treatment (tongue scraper and photodynamic therapy). Gas chromatography (OralChromaTM) and microbiological analysis will be used for the diagnosis of halitosis at the beginning of the study. Post-treatment evaluations will be conducted at one hour and 24 hours after treatment. The statistical analysis will include the Shapiro-Wilk test for the determination of the distribution of the data. If normal distribution is demonstrated, analysis of variance followed by Tukey’s test will be used to compare groups. The Kruskal-Wallis test followed by the Student-Newman-Keuls test will be used for data with non-normal distribution. Either the paired t-test or the Wilcoxon test will be used to compare data before and after treatment, depending on the distribution of the data. Discussion The results of this trial will determine the efficacy of using photodynamic therapy alone or in combination with a tongue scraper to treat bad breath in adolescents. Trial registration The protocol for this study was registered with Clinical Trials (registration number NCT02007993) on 10 December 2013.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Sandra Kalil Bussadori
- University Nove de Julho, Rua Vergueiro, 235, Liberdade, São Paulo, SP 01504-000, Brazil.
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Ma L, Ding Q, Feng X, Li F. The protective effect of recombinant FomA-expressing Lactobacillus acidophilus against periodontal infection. Inflammation 2014; 36:1160-70. [PMID: 23644821 PMCID: PMC3781307 DOI: 10.1007/s10753-013-9651-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A number of studies have shown that the outer membrane protein FomA found in Fusobacterium nucleatum demonstrates great potential as an immune target for combating periodontitis. Lactobacillus acidophilus is a useful antigen delivery vehicle for mucosal immunisation, and previous studies by our group have shown that L. acidophilus acts as a protective factor in periodontal health. In this study, making use of the immunogenicity of FomA and the probiotic properties of L. acidophilus, we constructed a recombinant form of L. acidophilus expressing the FomA protein and detected the FomA-specific IgG in the serum and sIgA in the saliva of mice through oral administration with the recombinant strains. When serum containing FomA-specific antibodies was incubated with the F. nucleatum in vitro, the number of Porphyromonas gingivalis cells that coaggregated with the F. nucleatum cells was significantly reduced. Furthermore, a mouse gum abscess model was successfully generated, and the range of gingival abscesses in the immune mice was relatively limited compared with the control group. The level of IL-1β in the serum and local gum tissues of the immune mice was consistently lower than in the control group. Our findings indicated that oral administration of the recombinant L. acidophilus reduced the risk of periodontal infection with P. gingivalis and F. nucleatum.
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Affiliation(s)
- Li Ma
- Department of Preventive and Pediatric Dentistry, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, 200011 China
| | - Qinfeng Ding
- Department of Preventive and Pediatric Dentistry, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, 200011 China
| | - Xiping Feng
- Department of Preventive and Pediatric Dentistry, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, 200011 China
| | - Fei Li
- Department of Preventive and Pediatric Dentistry, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, 200011 China
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Lopes RG, de Santi MESO, Franco BE, Deana AM, Prates RA, França CM, Fernandes KPS, Ferrari RAM, Bussadori SK. Photodynamic therapy as novel treatment for halitosis in adolescents: a case series study. J Lasers Med Sci 2014; 5:146-152. [PMID: 25653814 PMCID: PMC4281993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
INTRODUCTION Halitosis is a common problem that affects a large portion of the population worldwide. The origin of this condition is oral in 90% of cases and systemic in 10% of cases. The foul odor is caused mainly by volatile sulfur compounds produced by Gram-negative bacteria. However, it has recently been found that anaerobic Gram-positive bacteria also produce hydrogen sulfide (H2S) in the presence of amino acids, such as cysteine. Light with and without the combination of chemical agents has been used to induce therapeutic and antimicrobial effects. In photodynamic therapy, the antimicrobial effect is confined to areas covered by the photosensitizing dye. The aim of the present case series study was to evaluate the antimicrobial effect of photodynamic therapy on halitosis in adolescents through the analysis of volatile sulfur compounds measured using a sulfide meter (Halimeter®). METHODS Five adolescents aged 14 to 16 years were evaluated using a sulfide meter before and one hour after photodynamic therapy, which involved the use of methylene blue 0.005% on the middle third and posterior thirds of the dorsum of the tongue and nine points of laser irradiation in the red band (660 nm) with an energy dose of 9 J, power output of 100 mW and 90-seconds exposure time. RESULTS A 31.8% reduction in the concentration of volatile sulfur compounds was found in the comparison of the initial and final readings. The statistically significant reduction (p = 0.0091) led to an absence of halitosis following treatment (mean: 58.2 ppb). CONCLUSION Photodynamic therapy seems to be effective on reduction the concentration of volatile sulfur compounds.Considering the positive effects of photodynamic therapy in this case series, further studies involving microbiological analyses should be conducted to allow comparisons of the results.
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Sorkhdini P, Moslemi N, Jamshidi S, Jamali R, Amirzargar AA, Fekrazad R. Effect of hydrosoluble chlorine-mediated antimicrobial photodynamic therapy on clinical parameters and cytokine profile in ligature-induced periodontitis in dogs. J Periodontol 2012; 84:793-800. [PMID: 22813345 DOI: 10.1902/jop.2012.120330] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Recently, a hydrosoluble chlorine composed of sodium salts chlorine e6, chlorine p6, and purpurine-5 has been shown to be a promising photosensitizer in antimicrobial photodynamic therapy (aPDT). The aim of this study is to evaluate the effects of adjunctive application of hydrosoluble chlorine-mediated aPDT compared with scaling and root planing (SRP) alone on clinical parameters and cytokine levels in gingival crevicular fluid of dogs with experimental periodontitis. METHODS Periodontal disease was induced by placing silk ligatures around both maxillary and mandibular teeth. After establishment of attachment loss, full-mouth SRP was performed in all dogs. One day after SRP, each quadrant randomly received one of the following treatment modalities: hydrosoluble chlorine plus diode laser (wavelength 662 nm, power 100 mW, continuous mode, time of irradiation 20 seconds), hydrosoluble chlorine alone, laser alone, or no adjunctive treatment. The same adjunctive procedure was repeated 1 week later. Clinical parameters including periodontal probing depth, clinical attachment level, and bleeding on probing, as well as crevicular levels of interleukin-1β and tumor necrosis factor-α, were evaluated at baseline, at 3 weeks, and at 3 months after treatment. RESULTS After both 3 weeks and 3 months, all treatment groups showed significant improvement in all clinical and immunologic parameters (P <0.001). No significant differences were found between the four groups with regard to the measured parameters (P >0.05). CONCLUSION Based on the results of this study, adjunctive use of hydrosoluble chlorine-mediated aPDT with the current setting has no additional effect on the clinical parameters or proinflammatory cytokine levels in ligature-induced periodontitis.
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Affiliation(s)
- Parand Sorkhdini
- Laser Research Center of Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
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Chen J, Chen Z, Zheng Y, Zhou S, Wang J, Chen N, Huang J, Yan F, Huang M. Substituted zinc phthalocyanine as an antimicrobial photosensitizer for periodontitis treatment. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424611003276] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In the last decades the worldwide rise in antibiotic resistance has intensified the development of new antimicrobial agents. Photodynamic antimicrobial chemotherapy (PACT) has been used successfully to inactivate bacteria. We herein report a new zinc phthalocyanine based photosensitizer conjugated with polylysine moiety ( ZnPc-PL ). This photosensitizer significantly inactivated Porphyromonas gingivalis, the primary pathogenic bacteria responsible for periodontitis. No obvious phototoxicity was found to either mammalian bone marrow stromal cells (BMSC) or human periodontal ligament cells (HPDLC), indicating the high selectivity of ZnPc -PL toward bacteria. Furthermore, we established an experimental periodontitis model on beagle dogs to test the antimicrobial efficacy in vivo. The amount of gingival crevicular fluid (GCF) and the activity of crevicular fluid aspartate aminotransferase (AST) were monitored and were found to reduce significantly in the ZnPc-PL treated group compared to the controls (laser only and no treatment). In addition, PACT with ZnPc -PL caused a reduction in the bacterial burden by 100-fold compared to controls. Taken together, these findings suggest ZnPc-PL is a promising antimicrobial photosensitizer for the treatment of periodontal diseases.
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Affiliation(s)
- Jincan Chen
- State Key Laboratory of Structural Chemistry, Department of Chemical Biology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yang Qiao West Road, Fuzhou, Fujian 350002, China
- Danish-Chinese Centre for Proteases and Cancer, Fujian, China
- Graduate University of the Chinese Academy of Sciences, Beijing, China
| | - Zhuo Chen
- State Key Laboratory of Structural Chemistry, Department of Chemical Biology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yang Qiao West Road, Fuzhou, Fujian 350002, China
- Danish-Chinese Centre for Proteases and Cancer, Fujian, China
- Graduate University of the Chinese Academy of Sciences, Beijing, China
| | - Yuqian Zheng
- Periodontal Division, Affiliated Stomatological Hospital, Fujian Medical University, Fuzhou, China
| | - Shanyong Zhou
- State Key Laboratory of Structural Chemistry, Department of Chemical Biology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yang Qiao West Road, Fuzhou, Fujian 350002, China
- Danish-Chinese Centre for Proteases and Cancer, Fujian, China
| | - Jundong Wang
- Institute of Functional Materials, Fuzhou University, Fuzhou, China
| | - Naisheng Chen
- Institute of Functional Materials, Fuzhou University, Fuzhou, China
| | - Jinling Huang
- Institute of Functional Materials, Fuzhou University, Fuzhou, China
| | - Fuhua Yan
- Periodontal Division, Affiliated Stomatological Hospital, Fujian Medical University, Fuzhou, China
| | - Mingdong Huang
- State Key Laboratory of Structural Chemistry, Department of Chemical Biology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yang Qiao West Road, Fuzhou, Fujian 350002, China
- Danish-Chinese Centre for Proteases and Cancer, Fujian, China
- Graduate University of the Chinese Academy of Sciences, Beijing, China
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Bachrach G, Jamil A, Naor R, Tal G, Ludmer Z, Steinberg D. Garlic Allicin as a Potential Agent for Controlling Oral Pathogens. J Med Food 2011; 14:1338-43. [DOI: 10.1089/jmf.2010.0165] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- Gilad Bachrach
- Institute of Dental Sciences, The Hebrew University-Hadassah School of Dental Medicine, Jerusalem, Israel
| | - Areen Jamil
- Institute of Dental Sciences, The Hebrew University-Hadassah School of Dental Medicine, Jerusalem, Israel
| | - Ronit Naor
- Institute of Dental Sciences, The Hebrew University-Hadassah School of Dental Medicine, Jerusalem, Israel
| | - Golan Tal
- Faculty of Agriculture, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Zvi Ludmer
- Faculty of Agriculture, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Doron Steinberg
- Institute of Dental Sciences, The Hebrew University-Hadassah School of Dental Medicine, Jerusalem, Israel
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Crystal structure of glucansucrase from the dental caries pathogen Streptococcus mutans. J Mol Biol 2011; 408:177-86. [PMID: 21354427 DOI: 10.1016/j.jmb.2011.02.028] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 02/03/2011] [Accepted: 02/08/2011] [Indexed: 11/23/2022]
Abstract
Glucansucrase (GSase) from Streptococcus mutans is an essential agent in dental caries pathogenesis. Here, we report the crystal structure of S. mutans glycosyltransferase (GTF-SI), which synthesizes soluble and insoluble glucans and is a glycoside hydrolase (GH) family 70 GSase in the free enzyme form and in complex with acarbose and maltose. Resolution of the GTF-SI structure confirmed that the domain order of GTF-SI is circularly permuted as compared to that of GH family 13 α-amylases. As a result, domains A, B and IV of GTF-SI are each composed of two separate polypeptide chains. Structural comparison of GTF-SI and amylosucrase, which is closely related to GH family 13 amylases, indicated that the two enzymes share a similar transglycosylation mechanism via a glycosyl-enzyme intermediate in subsite -1. On the other hand, novel structural features were revealed in subsites +1 and +2 of GTF-SI. Trp517 provided the platform for glycosyl acceptor binding, while Tyr430, Asn481 and Ser589, which are conserved in family 70 enzymes but not in family 13 enzymes, comprised subsite +1. Based on the structure of GTF-SI and amino acid comparison of GTF-SI, GTF-I and GTF-S, Asp593 in GTF-SI appeared to be the most critical point for acceptor sugar orientation, influencing the transglycosylation specificity of GSases, that is, whether they produced insoluble glucan with α(1-3) glycosidic linkages or soluble glucan with α(1-6) linkages. The structural information derived from the current study should be extremely useful in the design of novel inhibitors that prevent the biofilm formation by GTF-SI.
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The effect of antimicrobial photodynamic therapy with radachlorin and toluidine blue on streptococcus mutans: an in vitro study. JOURNAL OF DENTISTRY (TEHRAN, IRAN) 2011; 8:48-54. [PMID: 21998808 PMCID: PMC3184734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 02/02/2011] [Indexed: 10/27/2022]
Abstract
OBJECTIVES Dental caries and periodontal diseases are caused by infection of teeth and supporting tissues due to complex aggregate of bacteria known as biofilm, firstly colonized by streptococci. The main purpose of this in vitro study was to evaluate the antimicrobial effects of toluidine blue O (TBO) and Radachlorin® in combination with a diode laser on the viability of Streptococcus mutans. MATERIALS AND METHODS Bacterial suspensions of Streptococcus mutans were exposed to either 0.1% TBO associated with (20 mW, 633 nm diode laser, continuous mode, 150 s) or 0.1% Radachlorin® and laser irradiation (100 mW, 662 nm diode laser, continuous mode, 120 s). Those in control groups were subjected to laser irradiation alone or TBO/Radachlorin® alone or received neither TBO/Radachlorin® nor laser exposure. The suspensions were then spread over specific agar plates and incubated aerobically at 37°C. Finally, the bactericidal effects were evaluated based on colony formation. RESULTS Potential bacterial cell killing was only observed following photosensitization with TBO and 3 j/cm(2) laser exposure (p<0.05), whereas Radachlorin® showed significant reduction in dark condition compared to laser exposure (p<0.05). CONCLUSION TBO-mediated photodynamic therapy seems to be more efficient than Radachlorin® in significantly reducing the viability of Streptococcus mutans in vitro.
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Dhingra K, Vandana K. Prophylactic Vaccination Against Periodontal Disease: A Systematic Review of Preclinical Studies. J Periodontol 2010; 81:1529-46. [DOI: 10.1902/jop.2010.100138] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Ito K, Ito S, Shimamura T, Kawarasaki Y, Abe K, Misaka T, Kobayashi T, Iwata S. Crystallization and preliminary X-ray analysis of a glucansucrase from the dental caries pathogen Streptococcus mutans. Acta Crystallogr Sect F Struct Biol Cryst Commun 2010; 66:1086-8. [PMID: 20823533 PMCID: PMC2935234 DOI: 10.1107/s1744309110029714] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Accepted: 07/26/2010] [Indexed: 05/25/2023]
Abstract
Glucansucrases encoded by Streptococcus mutans play essential roles in the synthesis of sticky dental plaques. Based on amino-acid sequence similarity, glucansucrases are classified as members of glycoside hydrolase family 70 (GH 70). Data on the crystal structure of GH 70 glucansucrases have yet to be reported. Here, the GH 70 glucansucrase GTF-SI from S. mutans was overexpressed in Escherichia coli strain BL21 (DE3), purified to homogeneity and crystallized using the hanging-drop vapour-diffusion method. Orthorhombic GTF-SI crystals belonging to space group P2(1)2(1)2 were obtained. A diffraction data set was collected to 2.1 A resolution.
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Affiliation(s)
- Keisuke Ito
- Department of Food and Nutritional Sciences, Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Sohei Ito
- Department of Food and Nutritional Sciences, Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan
| | - Tatsuro Shimamura
- Japan Science and Technology Agency, ERATO, Iwata Human Receptor Crystallography Project, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
- Department of Medical Chemistry, Kyoto University Faculty of Medicine, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yasuaki Kawarasaki
- Department of Food and Nutritional Sciences, Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan
| | - Keiko Abe
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Takumi Misaka
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Takuya Kobayashi
- Japan Science and Technology Agency, ERATO, Iwata Human Receptor Crystallography Project, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
- Department of Medical Chemistry, Kyoto University Faculty of Medicine, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - So Iwata
- Japan Science and Technology Agency, ERATO, Iwata Human Receptor Crystallography Project, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
- Department of Medical Chemistry, Kyoto University Faculty of Medicine, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
- Division of Molecular Biosciences, Membrane Protein Crystallography Group, Imperial College London, London SW7 2AZ, England
- Membrane Protein Laboratory, Diamond Light Source, Harwell Science and Innovation Campus, Chilton, Didcot, Oxfordshire OX11 0DE, England
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Liu PF, Shi W, Zhu W, Smith JW, Hsieh SL, Gallo RL, Huang CM. Vaccination targeting surface FomA of Fusobacterium nucleatum against bacterial co-aggregation: Implication for treatment of periodontal infection and halitosis. Vaccine 2010; 28:3496-505. [PMID: 20189489 DOI: 10.1016/j.vaccine.2010.02.047] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Revised: 12/26/2009] [Accepted: 02/11/2010] [Indexed: 11/16/2022]
Abstract
The mechanical therapy with multiple doses of antibiotics is one of modalities for treatment of periodontal diseases. However, treatments using multiple doses of antibiotics carry risks of generating resistant strains and misbalancing the resident body flora. We present an approach via immunization targeting an outer membrane protein FomA of Fusobacterium nucleatum (F. nucleatum), a central bridging organism in the architecture of oral biofilms. Neutralization of FomA considerably abrogated the enhancement of bacterial co-aggregation, biofilms and production of volatile sulfur compounds mediated by an inter-species interaction of F. nucleatum with Porphyromonas gingivalis (P. gingivalis). Vaccination targeting FomA also conferred a protective effect against co-infection-induced gum inflammation. Here, we advance a novel infectious mechanism by which F. nucleatum co-opts P. gingivalis to exacerbate gum infections. FomA is highlighted as a potential target for development of new therapeutics against periodontal infection and halitosis in humans.
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Affiliation(s)
- Pei-Feng Liu
- Department of Medicine, Division of Dermatology, University of California, San Diego, CA 92161, USA
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