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Chepchumba B, Asudi GO, Katana J, Ngayo MO, Khayeli JA. Isolation of phages against Streptococcus species in the oral cavity for potential control of dental diseases and associated systemic complications. Arch Microbiol 2024; 206:175. [PMID: 38493441 DOI: 10.1007/s00203-024-03897-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 02/07/2024] [Accepted: 02/12/2024] [Indexed: 03/19/2024]
Abstract
Dental infections and systemic complications caused by Streptococcus species in the oral cavity are increasingly exhibiting resistance to commonly used antibiotics, posing a potential threat to global public health. Phage therapy may offer a superior alternative, given that bacteriophages can be easily isolated and rapidly replicate in large numbers. In this study, six Streptococcus species from the oral cavity were characterized. Bacteriophages isolated from wastewater using five of these species as hosts produced plaques ranging from 0.2 to 2.4 mm in size. The phages demonstrated stability within a temperature range of 4 ℃ to 37 ℃. However, at temperatures exceeding 45 ℃, a noticeable reduction in bacteriophage titer was observed. Similarly, the phages showed greater stability within a pH range of 5 to 10. The isolated phages exhibited latency periods ranging from 15 to 20 min and had burst sizes varying from 10 to 200 viral particles. This study supports the potential use of bacteriophages in controlling infections caused by Streptococcus species.
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Affiliation(s)
- Beatrice Chepchumba
- Department of Biochemistry, Microbiology and Biotechnology, Kenyatta University, Nairobi, Kenya.
| | - George O Asudi
- Department of Biochemistry, Microbiology and Biotechnology, Kenyatta University, Nairobi, Kenya
| | - Japhet Katana
- Center for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Musa O Ngayo
- Center for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
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2
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Wuersching SN, Westphal D, Stawarczyk B, Edelhoff D, Kollmuss M. Surface properties and initial bacterial biofilm growth on 3D-printed oral appliances: a comparative in vitro study. Clin Oral Investig 2023; 27:2667-2677. [PMID: 36576565 PMCID: PMC10264496 DOI: 10.1007/s00784-022-04838-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 12/21/2022] [Indexed: 12/29/2022]
Abstract
OBJECTIVES To investigate the initial bacterial adhesion on 3D-printed splint materials in relation to their surface properties. MATERIALS AND METHODS Specimens of five printable splint resins (SHERAprint-ortho plus UV, NextDent Ortho Rigid, LuxaPrint Ortho Plus, V-Print Splint, KeySplint Soft), one polymethylmethacrylate (PMMA) block for subtractive manufacturing (Astron CLEARsplint Disc), two conventional powder/liquid PMMA materials (FuturaGen, Astron CLEARsplint), and one polyethylene terephthalate glycol (PETG) thermoplastic sheet for vacuum forming (Erkodur Thermoforming Foil) were produced and finished. Surface roughness Ra was determined via contact profilometry. Surface morphology was examined under a scanning electron microscope. Multi-species bacterial biofilms were grown on entire splints. Total biofilm mass and viable bacterial counts (CFU/ml) within the biofilms were determined. Statistical analyses were performed with a one-way ANOVA, Tukey's post hoc test, and Pearson's test (p < 0.05). RESULTS Astron CLEARsplint and KeySplint Soft specimens showed the highest surface roughness. The mean total biofilm mass on KeySplint Soft splints was higher compared to all other materials (p < 0.05). Colony-forming unit per milliliter on FuturaGen, Astron CLEARsplint, and KeySplint Soft splints was one log scale higher compared to all other materials. The other four printable resins displayed overall lower Ra, biofilm mass, and CFU/ml. A positive correlation was found between Ra and CFU/ml (r = 0.69, p = 0.04). CONCLUSIONS The 3D-printed splints showed overall favorable results regarding surface roughness and bacterial adhesion. Thermoplastic materials seem to display a higher surface roughness, making them more susceptible to microbial adhesion. CLINICAL RELEVANCE The development of caries and gingivitis in patients with oral appliances may be affected by the type of material.
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Affiliation(s)
- Sabina Noreen Wuersching
- Department of Conservative Dentistry and Periodontology, University Hospital, LMU Munich, Goethestrasse 70, 80336, Munich, Germany.
| | - David Westphal
- Department of Conservative Dentistry and Periodontology, University Hospital, LMU Munich, Goethestrasse 70, 80336, Munich, Germany
| | - Bogna Stawarczyk
- Department of Prosthetic Dentistry, University Hospital, LMU Munich, Goethestrasse 70, 80336, Munich, Germany
| | - Daniel Edelhoff
- Department of Prosthetic Dentistry, University Hospital, LMU Munich, Goethestrasse 70, 80336, Munich, Germany
| | - Maximilian Kollmuss
- Department of Conservative Dentistry and Periodontology, University Hospital, LMU Munich, Goethestrasse 70, 80336, Munich, Germany
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3
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Mattheos N, Janda M, Acharya A, Pekarski S, Larsson C. Impact of design elements of the implant supracrestal complex (ISC) on the risk of peri-implant mucositis and peri-implantitis: A critical review. Clin Oral Implants Res 2021; 32 Suppl 21:181-202. [PMID: 34642979 DOI: 10.1111/clr.13823] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 07/11/2021] [Accepted: 07/20/2021] [Indexed: 12/27/2022]
Abstract
OBJECTIVE The aim of this review was to investigate the evidence correlating the emergence profile (EP) and emergence angle (EA), peri-implant tissue height, implant neck design, abutment and/or prosthesis material, retention and connection types with risk of peri-implant mucositis and peri-implantitis. METHODS Seven focus questions were identified, and seven electronic search queries were conducted in PubMed. Human studies reporting on bleeding on probing, probing depth or case definitions of peri-implant mucositis and peri-implantitis were included. RESULTS Emerging evidence with bone-level implants suggests a link between EA combined with convex EP and peri-implantitis. Depth of the peri-implant sulcus of ≥3 mm is shown to be reducing the effectiveness of treatment of established peri-implant mucositis. Modification of the prosthesis contour is shown to be an effective supplement of the anti-infective treatment of peri-implant mucositis. Limited evidence points to no difference with regard to the risk for peri-implant mucositis between tissue- and bone-level implants, as well as the material of the abutment or the prosthesis. Limited evidence suggests the use or not of prosthetic abutments in external connections and does not change the risk for peri-implantitis. Literature with regard to prosthesis retention type and risk for peri-implantitis is inconclusive. CONCLUSIONS Limited evidence indicates the involvement of EA, EP, sulcus depth and restricted accessibility to oral hygiene in the manifestation and/or management of peri-implant mucositis/peri-implantitis. Conclusions are limited by the lack of consensus definitions and validated outcomes measures, as well as diverse methodological approaches. Purpose-designed studies are required to clarify current observations.
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Affiliation(s)
- Nikos Mattheos
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.,Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden
| | - Martin Janda
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - Aneesha Acharya
- Department of Periodontics, Dr. D. Y. Patil Dental College and Hospital, Pune, India
| | - Stephanie Pekarski
- Department of Periodontology, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - Christel Larsson
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
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4
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Zhang J, Kuang X, Zhou Y, Yang R, Zhou X, Peng X, Luo Y, Xu X. Antimicrobial activities of a small molecule compound II-6s against oral streptococci. J Oral Microbiol 2021; 13:1909917. [PMID: 33854741 PMCID: PMC8018465 DOI: 10.1080/20002297.2021.1909917] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Background: The side effects of present antimicrobials like chlorhexidine (CHX) and the emergence of drug resistance necessitate the development of alternative agents to control dental caries. Aim: This study developed a novel small molecule, namely II-6s, and investigated its antimicrobial activities against common oral streptococci associated with dental caries. Methods: The susceptibility of streptococci to II-6s was evaluated by the microdilution method, time-kill assay and scanning electron microscopy. The exopolysaccharides, dead/live bacteria and bacterial composition of the II-6s-treated Streptococcus mutans/Streptococcus gordonii/Streptococcus sanguinis 3-species biofilms were analyzed by confocal laser scanning microscopy, fluorescent in situ hybridization and quantitative PCR. The anti-demineralization effect and cytotoxicity of II-6s were evaluated by transverse microradiography and CCK-8 assay, respectively. Repeated exposure of S. mutans to II-6s was performed to assess if II-6s could induce drug resistance. Results: II-6s exhibited antimicrobial activity similar to CHX against S. mutans, S. gordonii and S. sanguinis and significantly inhibited exopolysaccharides production, live bacteria and the demineralizing capability of the 3-species streptococcal biofilms. Besides, II-6s showed reduced cytotoxicity relative to CHX and did not induce drug resistance in S. mutans after 15 passages. Conclusion: - II-6s may serve as a promising part of a successful caries management plan.
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Affiliation(s)
- Jin Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xinyi Kuang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuanzheng Zhou
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Ran Yang
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xian Peng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Youfu Luo
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xin Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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5
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Carrouel F, Conte MP, Fisher J, Gonçalves LS, Dussart C, Llodra JC, Bourgeois D. COVID-19: A Recommendation to Examine the Effect of Mouthrinses with β-Cyclodextrin Combined with Citrox in Preventing Infection and Progression. J Clin Med 2020; 9:jcm9041126. [PMID: 32326426 PMCID: PMC7230644 DOI: 10.3390/jcm9041126] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 04/13/2020] [Indexed: 12/30/2022] Open
Abstract
Considered to be a major portal of entry for infectious agents, the oral cavity is directly associated with the evolutionary process of SARS-CoV-2 in its inhalation of ambient particles in the air and in expectorations. Some new generations of mouth rinses currently on the market have ingredients that could contribute to lower the SARS-CoV-2 viral load, and thus facilitate the fight against oral transmission. If chlorhexidine, a usual component of mouth rinse, is not efficient to kill SARS-CoV-2, the use of a mouth rinses and/or with local nasal applications that contain β-cyclodextrins combined with flavonoids agents, such as Citrox, could provide valuable adjunctive treatment to reduce the viral load of saliva and nasopharyngeal microbiota, including potential SARS-CoV-2 carriage. We urge national agencies and authorities to start clinical trials to evaluate the preventive effects of βCD-Citrox therapeutic oral biofilm rinses in reducing the viral load of the infection and possibly disease progression.
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Affiliation(s)
- Florence Carrouel
- University Lyon 1, Laboratory “Health Systemic Process”, EA4129, 69008 Lyon, France;
- Correspondence: ; Tel.: +33-4-78-78-57-44
| | - Maria Pia Conte
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy;
| | - Julian Fisher
- THEnet, Training for Health Equity Network, New York, NY 10023, USA;
| | | | - Claude Dussart
- Lyon Public Hospices, Central Pharmacy, EA4129, 69002 Lyon, France;
| | - Juan Carlos Llodra
- Department of Preventive and Community Dentistry, University of Granada, 18010 Granada, Spain;
| | - Denis Bourgeois
- University Lyon 1, Laboratory “Health Systemic Process”, EA4129, 69008 Lyon, France;
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Abstract
Wine, and specifically red wine, is a beverage with a great chemical complexity comprising a particular combination of phenolic compounds which are directly associated with its health-promoting properties. Wine polyphenols could induce changes in the composition of intestinal microbiota that would affect the production of physiologically active phenolic metabolites modifying the content and phenolic profile at the systemic level. In addition, in the human population, it seems that different “metabotypes”, or patterns of metabolizing wine polyphenols, exist, which would be reflected in the different biological fluids (i.e., plasma, urine and feces) and tissues of the human body. Moreover, wine polyphenols might change the composition of oral microbiota by an antimicrobial action and/or by inhibition of the adhesion of pathogens to oral cells, thus contributing to the maintenance of oral health. In turn, polyphenols and/or its metabolites could have a direct action on brain function, by positively affecting signaling routes involved in stress-induced neuronal response, as well as by preventing neuroticism-like disorders (i.e., anxiety and depression) through anti-inflammatory and epigenetic mechanisms. All of this would condition the positive effects on health derived from moderate wine consumption. This paper reviews all these topics, which are directly related with the effects of wine polyphenols at both digestive and brain level. Further progresses expected in the coming years in these fields are also discussed.
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7
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Kim IS, Zhang F, Bhawal UK. The Role of the Hypoxia Responsive Gene DEC1 in Periodontal Inflammation. J HARD TISSUE BIOL 2018. [DOI: 10.2485/jhtb.27.227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Il-Shin Kim
- Department of Dental Hygiene, Honam University
| | - Fengzhu Zhang
- Department of Anesthesiology, Nihon University School of Dentistry at Matsudo
| | - Ujjal K. Bhawal
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo
- Research Institute of Oral Health, Nihon University School of Dentistry at Matsudo
- Department of Oral Health, Graduate School of Dentistry, Kanagawa Dental University
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8
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Teranaka A, Tomiyama K, Ohashi K, Miyake K, Shimizu T, Hamada N, Mukai Y, Hirayama S, Nihei T. Relevance of surface characteristics in the adhesiveness of polymicrobial biofilms to crown restoration materials. J Oral Sci 2018; 60:129-136. [DOI: 10.2334/josnusd.16-0758] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Ayako Teranaka
- Department of Operative Dentistry, Nihon University School of Dentistry at Matsudo
| | - Kiyoshi Tomiyama
- Division of Cariology and Restorative Dentistry, Department of Oral Function and Restoration, Graduate School of Dentistry, Kanagawa Dental University
| | - Katsura Ohashi
- Division of Clinical Biomaterials, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
| | - Kaori Miyake
- Division of Clinical Biomaterials, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
| | - Tota Shimizu
- Division of Prosthodontic Dentistry for Function of TMJ and Occlusion, Department of Oral Function and Restoration, Kanagawa Dental University
| | - Nobushiro Hamada
- Division of Microbiology, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
| | - Yoshiharu Mukai
- Division of Cariology and Restorative Dentistry, Department of Oral Function and Restoration, Graduate School of Dentistry, Kanagawa Dental University
| | - Satoshi Hirayama
- Department of Operative Dentistry, Nihon University School of Dentistry at Matsudo
| | - Tomotaro Nihei
- Division of Clinical Biomaterials, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
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9
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Packyanathan JS, Rani Juneius CE, Vinoth M. Recent Antibiotics Used in Dental Disease Management. Microb Biotechnol 2018. [DOI: 10.1007/978-981-10-7140-9_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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10
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Rath H, Feng D, Neuweiler I, Stumpp NS, Nackenhorst U, Stiesch M. Biofilm formation by the oral pioneer colonizer Streptococcus gordonii: an experimental and numerical study. FEMS Microbiol Ecol 2017; 93:2966864. [PMID: 28158402 DOI: 10.1093/femsec/fix010] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/30/2017] [Indexed: 11/14/2022] Open
Abstract
For decades, extensive research efforts have been conducted to improve the functionality and stability of implants. Especially in dentistry, implant treatment has become a standard medical practice. The treatment restores full dental functionality, helping patients to maintain high quality of life. However, about 10% of the patients suffer from early and late device failure due to peri-implantitis, an inflammatory disease of the tissues surrounding the implant. Peri-implantitis is caused by progressive microbial colonization of the device surface and the formation of microbial communities, so-called biofilms. This infection can ultimately lead to implant failure. The causative agents for the inflammatory disease, periodontal pathogenic biofilms, have already been extensively studied, but are still not completely understood. As numerical simulations will have the potential to predict oral biofilm formation precisely in the future, for the first time, this study aimed to analyze Streptococcus gordonii biofilms by combining experimental studies and numerical simulation. The study demonstrated that numerical simulation was able to precisely model the influence of different nutrient concentration and spatial distribution of active and inactive biomass of the biofilm in comparison with the experimental data. This model may provide a less time-consuming method for the future investigation of any bacterial biofilm.
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Affiliation(s)
- Henryke Rath
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hanover Medical School, Hannover 30625, Germany
| | - Dianlei Feng
- Institute of Fluid Mechanics and Environmental Physics in Civil Engineering, Leibniz Universität Hannover, Hannover 30167, Germany
| | - Insa Neuweiler
- Institute of Fluid Mechanics and Environmental Physics in Civil Engineering, Leibniz Universität Hannover, Hannover 30167, Germany
| | - Nico S Stumpp
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hanover Medical School, Hannover 30625, Germany
| | - Udo Nackenhorst
- Institute of Mechanics and Computational Mechanics, Leibniz Universität Hannover, Hannover 30167, Germany
| | - Meike Stiesch
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hanover Medical School, Hannover 30625, Germany
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11
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The oral microbiome. Emerg Top Life Sci 2017; 1:287-296. [DOI: 10.1042/etls20170040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 10/13/2017] [Accepted: 10/16/2017] [Indexed: 11/17/2022]
Abstract
The human microbiome is receiving a great deal of attention as its role in health and disease becomes ever more apparent. The oral microbiome, perhaps due to the ease with which we can obtain samples, is arguably the most well-studied human microbiome to date. It is obvious, however, that we have only just begun to scratch the surface of the complex bacterial and bacterial–host interactions within this complex community. Here, we describe the factors which are known to influence the development of the seemingly globally conserved, core, oral microbiome and those which are likely to be responsible for the observed differences at the individual level. We discuss the paradoxical situation of maintaining a stable core microbiome which is at the same time incredibly resilient and adaptable to many different stresses encountered in the open environment of the oral cavity. Finally, we explore the interactions of the oral microbiome with the host and discuss the interactions underlying human health and disease.
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12
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Esteban-Fernández A, Zorraquín-Peña I, González de Llano D, Bartolomé B, Moreno-Arribas MV. The role of wine and food polyphenols in oral health. Trends Food Sci Technol 2017. [DOI: 10.1016/j.tifs.2017.09.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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13
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Vieira AT, Castelo PM, Ribeiro DA, Ferreira CM. Influence of Oral and Gut Microbiota in the Health of Menopausal Women. Front Microbiol 2017; 8:1884. [PMID: 29033921 PMCID: PMC5625026 DOI: 10.3389/fmicb.2017.01884] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 09/14/2017] [Indexed: 01/08/2023] Open
Abstract
Sex differences in gut microbiota are acknowledged, and evidence suggests that gut microbiota may have a role in higher incidence and/or severity of autoimmune diseases in females. Additionally, it has been suggested that oral, vaginal, and gut microbiota composition can be regulated by estrogen levels. The association of vaginal microbiota with vulvovaginal atrophy at menopause is well described in the literature. However, the relevance of oral and gut microbiota modulation in the immune system during estrogen deficiency and its effect on inflammatory diseases is not well explored. Estrogen deficiency is a condition that occurs in menopausal women, and it can last approximately 30 years of a woman’s life. The purpose of this mini- review is to highlight the importance of alterations in the oral and gut microbiota during estrogen deficiency and their effect on oral and inflammatory diseases that are associated with menopause. Considering that hormone replacement therapy is not always recommended or sufficient to prevent or treat menopause-related disease, we will also discuss the use of probiotics and prebiotics as an option for the prevention or treatment of these diseases.
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Affiliation(s)
- Angélica T Vieira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Paula M Castelo
- Department of Pharmaceutics Sciences, Institute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo, Diadema, Brazil.,Pathology Graduate Program, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Daniel A Ribeiro
- Pathology Graduate Program, Universidade Federal de São Paulo, São Paulo, Brazil.,Department of Biosciences, Universidade Federal de São Paulo, Santos, Brazil
| | - Caroline M Ferreira
- Department of Pharmaceutics Sciences, Institute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo, Diadema, Brazil.,Pathology Graduate Program, Universidade Federal de São Paulo, São Paulo, Brazil
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14
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Effects of Arginine on Streptococcus mutans Growth, Virulence Gene Expression, and Stress Tolerance. Appl Environ Microbiol 2017; 83:AEM.00496-17. [PMID: 28526785 DOI: 10.1128/aem.00496-17] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 05/11/2017] [Indexed: 11/20/2022] Open
Abstract
Streptococcus mutans is a common constituent of oral biofilms and a primary etiologic agent of human dental caries. The bacteria associated with dental caries have potent abilities to produce organic acids from dietary carbohydrates and to grow and metabolize in acidic conditions. By contrast, many commensal bacteria produce ammonia through the arginine deiminase system (ADS), which moderates the pH of oral biofilms. Arginine metabolism by the ADS is a significant deterrent to the initiation and progression of dental caries. In this study, we observed how exogenously provided l-arginine affects the growth, the virulence properties, and the tolerance of environmental stresses of S. mutans Supplementation with 1.5% arginine (final concentration) had an inhibitory effect on the growth of S. mutans in complex and chemically defined media, particularly when cells were exposed to acid or oxidative stress. The genes encoding virulence factors required for attachment/accumulation (gtfB and spaP), bacteriocins (nlmA, nlmB, nlmD, and cipB), and the sigma factor required for competence development (comX) were downregulated during growth with 1.5% arginine. Deep sequencing of RNA (RNA-Seq) comparing the transcriptomes of S. mutans growing in chemically defined media with and without 1.5% arginine revealed differential expression of genes encoding ATP-binding cassette transporters, metal transporters, and constituents required for survival, metabolism, and biofilm formation. Therefore, the mechanisms of action by which arginine inhibits dental caries include direct adverse effects on multiple virulence-related properties of the most common human dental caries pathogen.IMPORTANCE Metabolism of the amino acid arginine by the arginine deiminase system (ADS) of certain oral bacteria raises the pH of dental plaque and provides a selective advantage to health-associated bacteria, thereby protecting the host from dental caries (cavities). Here, we examine the effects of arginine on the cavity-causing bacterium Streptococcus mutans We find that arginine negatively impacts the growth, the pathogenic potential, and the tolerance of environmental stresses in a way that is likely to compromise the ability of S. mutans to cause disease. Using genetic and genomic techniques, multiple mechanisms by which arginine exerts its influence on virulence-related properties of S. mutans are discovered. This report demonstrates that a primary mechanism of action by which arginine inhibits the initiation and progression of dental caries may be by reducing the pathogenic potential of S. mutans.
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15
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Boaden E, Lyons M, Singhrao SK, Dickinson H, Leathley M, Lightbody CE, McLoughlin A, Khan Z, Crean S, Smith C, Higham S, Watkins C. Oral flora in acute stroke patients: A prospective exploratory observational study. Gerodontology 2017; 34:343-356. [DOI: 10.1111/ger.12271] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2017] [Indexed: 01/25/2023]
Affiliation(s)
- Elizabeth Boaden
- Faculty of Health and Wellbeing; School of Nursing; University of Central Lancashire; Preston UK
| | - Mary Lyons
- Faculty of Health and Wellbeing; School of Nursing; University of Central Lancashire; Preston UK
| | - Sim K. Singhrao
- Dementia & Neurodegenerative Diseases Research Group; College of Clinical and Biomedical Sciences; School of Dentistry; University of Central Lancashire; Preston UK
| | - Hazel Dickinson
- Faculty of Health and Wellbeing; School of Nursing; University of Central Lancashire; Preston UK
| | - Michael Leathley
- Faculty of Health and Wellbeing; School of Nursing; University of Central Lancashire; Preston UK
| | - Catherine E. Lightbody
- Faculty of Health and Wellbeing; School of Nursing; University of Central Lancashire; Preston UK
| | - Alison McLoughlin
- Faculty of Health and Wellbeing; School of Nursing; University of Central Lancashire; Preston UK
| | - Zarine Khan
- Dementia & Neurodegenerative Diseases Research Group; College of Clinical and Biomedical Sciences; School of Dentistry; University of Central Lancashire; Preston UK
| | - Stjohn Crean
- Dementia & Neurodegenerative Diseases Research Group; College of Clinical and Biomedical Sciences; School of Dentistry; University of Central Lancashire; Preston UK
| | - Craig Smith
- Greater Manchester Comprehensive Stroke Centre; and University of Manchester Stroke and Vascular Centre; Manchester Academic Health Science Centre; Salford Royal NHS Foundation Trust; Salford UK
| | - Susan Higham
- Department of Health Services Research; Institute of Psychology; Health and Society; The Research Wing; School of Dentistry; University of Liverpool; Liverpool UK
| | - Caroline Watkins
- Faculty of Health and Wellbeing; School of Nursing; University of Central Lancashire; Preston UK
- Australian Catholic University; North Sydney Australia
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Ismail AI, Pitts NB, Tellez M, Banerjee A, Deery C, Douglas G, Eggertsson H, Ekstrand K, Ellwood R, Gomez J, Jablonski-Momeni A, Kolker J, Longbottom C, Manton D, Martignon S, McGrady M, Rechmann P, Ricketts D, Sohn W, Thompson V, Twetman S, Weyant R, Wolff M, Zandona A. The International Caries Classification and Management System (ICCMS™) An Example of a Caries Management Pathway. BMC Oral Health 2015; 15 Suppl 1:S9. [PMID: 26391116 PMCID: PMC4580843 DOI: 10.1186/1472-6831-15-s1-s9] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Risk factors of periodontal disease: review of the literature. Int J Dent 2014; 2014:182513. [PMID: 24963294 PMCID: PMC4055151 DOI: 10.1155/2014/182513] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 04/07/2014] [Indexed: 01/15/2023] Open
Abstract
Objectives. This paper aims to review the evidence on the potential roles of modifiable and nonmodifiable risk factors associated with periodontal disease. Data. Original articles that reported on the risk factors for periodontal disease were included. Sources. MEDLINE (1980 to Jan 2014), PubMed (using medical subject headings), and Google Scholar were searched using the following terms in different combinations: "periodontal disease," "periodontitis," "risk factors," and "causal." This was supplemented by hand-searching in peer-reviewed journals and cross-referenced with the articles accessed. Conclusions. It is important to understand the etiological factors and the pathogenesis of periodontal disease to recognize and appreciate the associated risk factors. As periodontal disease is multifactorial, effective disease management requires a clear understanding of all the associated risk factors.
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Williams DW, Jordan RPC, Wei XQ, Alves CT, Wise MP, Wilson MJ, Lewis MAO. Interactions of Candida albicans with host epithelial surfaces. J Oral Microbiol 2013; 5:22434. [PMID: 24155995 PMCID: PMC3805843 DOI: 10.3402/jom.v5i0.22434] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 09/27/2013] [Accepted: 09/28/2013] [Indexed: 11/25/2022] Open
Abstract
Candida albicans is an opportunistic, fungal pathogen of humans that frequently causes superficial infections of oral and vaginal mucosal surfaces of debilitated and susceptible individuals. The organism is however, commonly encountered as a commensal in healthy individuals where it is a component of the normal microflora. The key determinant in the type of relationship that Candida has with its host is how it interacts with the epithelial surface it colonises. A delicate balance clearly exists between the potentially damaging effects of Candida virulence factors and the nature of the immune response elicited by the host. Frequently, it is changes in host factors that lead to Candida seemingly changing from a commensal to pathogenic existence. However, given the often reported heterogeneity in morphological and biochemical factors that exist between Candida species and indeed strains of C. albicans, it may also be the fact that colonising strains differ in the way they exploit resources to allow persistence at mucosal surfaces and as a consequence this too may affect the way Candida interacts with epithelial cells. The aim of this review is to provide an overview of some of the possible interactions that may occur between C. albicans and host epithelial surfaces that may in turn dictate whether Candida removal, its commensal persistence or infection follows.
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Affiliation(s)
- David W Williams
- Tissue Engineering and Reparative Dentistry, School of Dentistry, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK
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Lee YJ, van Nostrand JD, Tu Q, Lu Z, Cheng L, Yuan T, Deng Y, Carter MQ, He Z, Wu L, Yang F, Xu J, Zhou J. The PathoChip, a functional gene array for assessing pathogenic properties of diverse microbial communities. ISME JOURNAL 2013; 7:1974-84. [PMID: 23765101 DOI: 10.1038/ismej.2013.88] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 04/10/2013] [Accepted: 04/20/2013] [Indexed: 12/21/2022]
Abstract
Pathogens present in the environment pose a serious threat to human, plant and animal health as evidenced by recent outbreaks. As many pathogens can survive and proliferate in the environment, it is important to understand their population dynamics and pathogenic potential in the environment. To assess pathogenic potential in diverse habitats, we developed a functional gene array, the PathoChip, constructed with key virulence genes related to major virulence factors, such as adherence, colonization, motility, invasion, toxin, immune evasion and iron uptake. A total of 3715 best probes were selected from 13 virulence factors, covering 7417 coding sequences from 1397 microbial species (2336 strains). The specificity of the PathoChip was computationally verified, and approximately 98% of the probes provided specificity at or below the species level, proving its excellent capability for the detection of target sequences with high discrimination power. We applied this array to community samples from soil, seawater and human saliva to assess the occurrence of virulence genes in natural environments. Both the abundance and diversity of virulence genes increased in stressed conditions compared with their corresponding controls, indicating a possible increase in abundance of pathogenic bacteria under environmental perturbations such as warming or oil spills. Statistical analyses showed that microbial communities harboring virulence genes were responsive to environmental perturbations, which drove changes in abundance and distribution of virulence genes. The PathoChip provides a useful tool to identify virulence genes in microbial populations, examine the dynamics of virulence genes in response to environmental perturbations and determine the pathogenic potential of microbial communities.
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Affiliation(s)
- Yong-Jin Lee
- Institute for Environmental Genomics and Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, USA
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Biosurfactants prevent in vitro Candida albicans biofilm formation on resins and silicon materials for prosthetic devices. Oral Surg Oral Med Oral Pathol Oral Radiol 2012; 113:755-61. [DOI: 10.1016/j.oooo.2011.11.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Revised: 10/21/2011] [Accepted: 11/06/2011] [Indexed: 11/23/2022]
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Avila M, Ojcius DM, Yilmaz Ö. The oral microbiota: living with a permanent guest. DNA Cell Biol 2009; 28:405-11. [PMID: 19485767 PMCID: PMC2768665 DOI: 10.1089/dna.2009.0874] [Citation(s) in RCA: 262] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2009] [Accepted: 03/25/2009] [Indexed: 01/09/2023] Open
Abstract
The oral cavity of healthy individuals contains hundreds of different bacterial, viral, and fungal species. Many of these can associate to form biofilms, which are resistant to mechanical stress or antibiotic treatment. Most are also commensal species, but they can become pathogenic in responses to changes in the environment or other triggers in the oral cavity, including the quality of an individual's personal hygiene. The complexity of the oral microbiome is being characterized through the newly developed tools of metagenomics. How the microbiome of the oral cavity contributes to health and disease is attracting the interest of a growing number of cell biologists, microbiologists, and immunologists.
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Affiliation(s)
- Maria Avila
- School of Natural Sciences, University of California, Merced, California
| | - David M. Ojcius
- School of Natural Sciences, University of California, Merced, California
| | - Özlem Yilmaz
- Department of Periodontology, College of Dentistry; University of Florida, Gainesville, Florida
- Emerging Pathogens Institute; University of Florida, Gainesville, Florida
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Dasanayake AP, Li Y, Wiener H, Ruby JD, Lee MJ. SalivaryActinomyces naeslundiiGenospecies 2 andLactobacillus caseiLevels Predict Pregnancy Outcomes. J Periodontol 2005; 76:171-7. [PMID: 15974839 DOI: 10.1902/jop.2005.76.2.171] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Gravida's poor periodontal health is emerging as a modifiable independent risk factor for preterm delivery and low birth weight. METHODS To test the hypothesis that oral bacteria other than periodontal pathogens are also associated with pregnancy outcomes, specific oral bacterial levels measured during pregnancy were evaluated in relation to gestational age and birth weight while controlling for demographic, medical, and dental variables. The study population consisted of 297 predominantly African- American women who were pregnant for the first time. The salivary bacterial levels evaluated were Streptococcus mutans, Streptococcus sobrinus, Streptococcus sanguinus, Lactobacillus acidophilus, Lactobacillus casei, Actinomyces naeslundii genospecies (gsp) 1 and 2, total streptococci, and total cultivable organisms. RESULTS For 1 unit increase in log(10) A. naeslundii gsp 2 levels, there was a 60 gm decrease in birth weight (beta = -59.7 g; SE = 29.1; P = 0.04), and a 0.17 week decrease in gestational age (beta = -0.17 wk; SE = 0.09; P = 0.05). In contrast, per 1 unit increase in log(10) L. casei levels, there was a 42 gm increase in birth weight (beta = 42.2 g; SE = 19.3; P = 0.03), and a 0.13 week increase in gestational age (beta = 0.13 week; SE = 0.06; P = 0.04). CONCLUSIONS We conclude that other oral bacterial species can also be related to pregnancy outcomes in addition to previously reported periodontal pathogens. These organism levels may not only predict poor pregnancy outcomes, but also be used as modifiable risk factors in reducing prematurity and low birth weight.
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Affiliation(s)
- Ananda P Dasanayake
- Department of Epidemiology and Health Promotion, New York University College of Dentistry, New York, NY 10010, USA.
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Barbeau J, Séguin J, Goulet JP, de Koninck L, Avon SL, Lalonde B, Rompré P, Deslauriers N. Reassessing the presence of Candida albicans in denture-related stomatitis. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 2003; 95:51-9. [PMID: 12539027 DOI: 10.1067/moe.2003.44] [Citation(s) in RCA: 155] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The aim of this study was to reevaluate the link between Candida albicans and denture-related stomatitis according to a modified Newton classification, which reflects the classic types of inflammation as well as the extent to which the tissue is affected. STUDY DESIGN Two groups of denture wearers were evaluated for denture-related stomatitis. The presence and number of yeasts on the dentures, the identification of the Candida species present, and the amount of plaque coverage were determined. Putative risk factors were included in the study. Relations between these variables and stomatitis were analyzed statistically. RESULTS According to Newton's classification, the presence of yeast on the denture was not linked to whether subjects had stomatitis. But with our classification, higher prevalence of yeast carriers, yeast colony number, and plaque coverage were found on the dentures of individuals with the most extensive inflammation, regardless of Newton type. Among risk factors evaluated, wearing dentures at night and smoking were associated with the most extensive inflammation. We also demonstrated that the presence of C albicans as well as the cohabitation of different Candida species was more frequent in denture-related stomatitis. The differences were statistically significant. CONCLUSIONS Statistical analysis of microbiologic data from different denture-related stomatitis categories according to our modified classification showed that the presence of yeast on dentures was significantly associated with the extent of the inflammation, rather than with the Newton type. Our findings suggest that the inflammatory process of stomatitis favors the colonization of Candida. These results could have new implications for diagnosis and management of the condition.
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Affiliation(s)
- Jean Barbeau
- Department of Stomatology, Faculty of Dentistry, Université de Montréal, Québec, Canada.
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