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Anitua E, Murias-Freijo A, Tierno R, Tejero R, Alkhraisat MH. Assessing peri-implant bacterial community structure: the effect of microbiome sample collection method. BMC Oral Health 2024; 24:1001. [PMID: 39187802 PMCID: PMC11348724 DOI: 10.1186/s12903-024-04675-y] [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: 06/29/2023] [Accepted: 07/25/2024] [Indexed: 08/28/2024] Open
Abstract
BACKGROUND Oral microbiota comprises polymicrobial communities shaped by mutualistic coevolution with the host, contributing to homeostasis and regulating immune function. Nevertheless, dysbiosis of oral bacterial communities is associated with a number of clinical symptoms that ranges from infections to oral cancer. Peri-implant diseases are biofilm-associated inflammatory conditions affecting the soft and hard tissues around dental implants. Characterization and identification of the biofilm community are essential for the understanding of the pathophysiology of such diseases. For that sampling methods should be representative of the biofilm communities Therefore, there is a need to know the effect of different sampling strategies on the biofilm characterization by next generation sequencing. METHODS With the aim of selecting an appropriate microbiome sampling procedure for periimplant biofilms, next generation sequencing was used for characterizing the bacterial communities obtained by three different sampling strategies two months after transepithelial abutment placement: adjacent periodontal crevicular fluid (ToCF), crevicular fluid from transepithelial abutment (TACF) and transepithelial abutment (TA). RESULTS Significant differences in multiple alpha diversity indices were detected at both the OTU and the genus level between different sampling procedures. Differentially abundant taxa were detected between sample collection strategies, including peri-implant health and disease related taxa. At the community level significant differences were also detected between TACF and TA and also between TA and ToCF. Moreover, differential network properties and association patterns were identified. CONCLUSIONS The selection of sample collection strategy can significantly affect the community composition and structure. TRIAL REGISTRATION This research is part of a randomized clinical trial that was designed to assess the effect of transepithelial abutment surface on the biofilm formation. The trial was registered at Trial Registration ClinicalTrials.gov under the number NCT03554876.
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Affiliation(s)
- Eduardo Anitua
- BTI-Biotechnology Institute, Vitoria, Spain.
- University Institute for Regenerative Medicine & Oral Implantology, UIRMI (UPV/EHU-Fundación Eduardo Anitua), Jacinto Quincoces, 39, Vitoria (Álava), 01007, Spain.
| | - Alia Murias-Freijo
- University Institute for Regenerative Medicine & Oral Implantology, UIRMI (UPV/EHU-Fundación Eduardo Anitua), Jacinto Quincoces, 39, Vitoria (Álava), 01007, Spain
- Biomedical Investigation, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain
| | - Roberto Tierno
- BTI-Biotechnology Institute, Vitoria, Spain
- University Institute for Regenerative Medicine & Oral Implantology, UIRMI (UPV/EHU-Fundación Eduardo Anitua), Jacinto Quincoces, 39, Vitoria (Álava), 01007, Spain
| | - Ricardo Tejero
- BTI-Biotechnology Institute, Vitoria, Spain
- University Institute for Regenerative Medicine & Oral Implantology, UIRMI (UPV/EHU-Fundación Eduardo Anitua), Jacinto Quincoces, 39, Vitoria (Álava), 01007, Spain
| | - Mohammad Hamdan Alkhraisat
- BTI-Biotechnology Institute, Vitoria, Spain
- University Institute for Regenerative Medicine & Oral Implantology, UIRMI (UPV/EHU-Fundación Eduardo Anitua), Jacinto Quincoces, 39, Vitoria (Álava), 01007, Spain
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Serbanescu MA, Oveisi M, Sun C, Fine N, Bosy A, Glogauer M. Metronidazole enhances killing of Porphyromonas gingivalis by human PMNs. FRONTIERS IN ORAL HEALTH 2022; 3:933997. [PMID: 36105174 PMCID: PMC9464935 DOI: 10.3389/froh.2022.933997] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
Background and objectivesPeriodontitis affects the supporting structures of the teeth as a result of the interactions between the subgingival biofilm and the host immune system. Periodontal therapy in severe forms of periodontitis often utilizes antimicrobial agents with some potential to improve host defense responses. In the present study, we investigated the in vitro effect of metronidazole (MTZ) at concentrations achievable in the periodontal pocket on PMN activation and PMN mediated killing of Porphyromonas gingivalis.Materials and methodsFlow cytometry based assays were used to measure the impact of MTZ on PMN degranulation, neutrophil extracellular trap (NET) formation and myeloperoxidase (MPO) release and phagocytosis in response to the keystone oral pathogen P. gingivalis. Functional assays for PMN mediated killing of P. gingivalis and reactive oxygen species (ROS) production in PMN were also carried out.ResultsWe demonstrate that PMNs pretreated with MTZ (2 μg/ml or 50 μg/ml) displayed enhanced killing of P. gingivalis compared to untreated PMNs. At concentrations achieved physiologically in the periodontal pocket, MTZ induced PMN surface expression of two activation markers (CD66 and CD63). MTZ did not alter P. gingivalis-induced NETosis, but suppressed P. gingivalis-induced ROS production and phagocytosis.ConclusionMTZ displays a positive interaction with PMNs to potentiate PMN mediated killing of P. gingivalis and may therefore contribute to its beneficial effects in the treatment of periodontitis initiated by P. gingivalis infections including those refractory to conventional treatment.
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Affiliation(s)
| | - Morvarid Oveisi
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
| | - Chunxiang Sun
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
| | - Noah Fine
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
| | | | - Michael Glogauer
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
- Department of Dental Oncology and Maxillofacial Prosthetics, Princess Margaret Cancer Centre, Toronto, ON, Canada
- *Correspondence: Michael Glogauer
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Li X, Liu Y, Yang X, Li C, Song Z. The Oral Microbiota: Community Composition, Influencing Factors, Pathogenesis, and Interventions. Front Microbiol 2022; 13:895537. [PMID: 35572634 PMCID: PMC9100676 DOI: 10.3389/fmicb.2022.895537] [Citation(s) in RCA: 78] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/06/2022] [Indexed: 12/12/2022] Open
Abstract
The human oral cavity provides a habitat for oral microbial communities. The complexity of its anatomical structure, its connectivity to the outside, and its moist environment contribute to the complexity and ecological site specificity of the microbiome colonized therein. Complex endogenous and exogenous factors affect the occurrence and development of the oral microbiota, and maintain it in a dynamic balance. The dysbiotic state, in which the microbial composition is altered and the microecological balance between host and microorganisms is disturbed, can lead to oral and even systemic diseases. In this review, we discuss the current research on the composition of the oral microbiota, the factors influencing it, and its relationships with common oral diseases. We focus on the specificity of the microbiota at different niches in the oral cavity, the communities of the oral microbiome, the mycobiome, and the virome within oral biofilms, and interventions targeting oral pathogens associated with disease. With these data, we aim to extend our understanding of oral microorganisms and provide new ideas for the clinical management of infectious oral diseases.
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Affiliation(s)
- Xinyi Li
- School of Stomatology, Southwest Medical University, Luzhou, China
| | - Yanmei Liu
- School of Stomatology, Southwest Medical University, Luzhou, China
| | - Xingyou Yang
- Molecular Biotechnology Platform, Public Center of Experimental Technology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
| | - Chengwen Li
- Molecular Biotechnology Platform, Public Center of Experimental Technology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
- *Correspondence: Chengwen Li,
| | - Zhangyong Song
- Molecular Biotechnology Platform, Public Center of Experimental Technology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
- Zhangyong Song,
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Almeida-Santos A, Martins-Mendes D, Gayà-Vidal M, Pérez-Pardal L, Beja-Pereira A. Characterization of the Oral Microbiome of Medicated Type-2 Diabetes Patients. Front Microbiol 2021; 12:610370. [PMID: 33613481 PMCID: PMC7892904 DOI: 10.3389/fmicb.2021.610370] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 01/07/2021] [Indexed: 12/11/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a chronic metabolic disease that is becoming a significant global health care problem. Several studies have shown that people with diabetes are more susceptible to oral problems, such as periodontitis and, although the causes are still inconclusive, oral microbiota is considered to play a major role in oral health. This study aimed to characterize the oral microbiome of a sample representing T2DM patients from Portugal and exploit potential associations between some microorganisms and variables like teeth brushing, smoking habits, average blood sugar levels, medication and nutrient intake. By sequencing the hypervariable regions V3-V4 of the 16S rRNA gene in 50 individuals belonging to a group of diabetes patients and a control group, we found a total of 232 taxa, from which only 65% were shared between both groups. No differences were found in terms of alpha and beta diversity between categories. We did not find significant differences in the oral microbiome profiles of control and diabetes patients. Only the class Synergistia and the genus TG5, which are related to periodontitis, were statistically more frequent in the control group. The similar microbiome profiles of medicated diabetics and the control group indicates that the relationship between the T2DM and the oral microbiome might be more related to either the lifestyle/diet rather than diabetes per se. Moreover, this study provides, for the first time, insights into the oral microbiome of a population with a high prevalence of diabetes.
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Affiliation(s)
- Ana Almeida-Santos
- Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO-UP), InBIO, Universidade do Porto, Porto, Portugal.,Department of Geosciences, Environment and Spatial Planning (DGAOT), Faculty of Sciences, University of Porto, Porto, Portugal
| | - Daniela Martins-Mendes
- Internal Medicine Department, Centro Hospitalar de Vila Nova de Gaia/Espinho EPE, Vila Nova de Gaia, Portugal.,Diabetic Foot Clinic, Endocrinology, Diabetes and Metabolism Department, Centro Hospitalar de Vila Nova de Gaia/Espinho EPE, Vila Nova de Gaia, Portugal.,Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Magdalena Gayà-Vidal
- Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO-UP), InBIO, Universidade do Porto, Porto, Portugal
| | - Lucía Pérez-Pardal
- Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO-UP), InBIO, Universidade do Porto, Porto, Portugal
| | - Albano Beja-Pereira
- Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO-UP), InBIO, Universidade do Porto, Porto, Portugal.,Department of Geosciences, Environment and Spatial Planning (DGAOT), Faculty of Sciences, University of Porto, Porto, Portugal.,Faculty of Sciences, Sustainable Agrifood Production Research Centre (GreenUPorto), University of Porto, Porto, Portugal
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Kageyama Y, Shimokawa Y, Kawauchi K, Morimoto M, Aida K, Akiyama T, Nakamura T. Dysbiosis of Oral Microbiota Associated with Palmoplantar Pustulosis. Dermatology 2020; 237:347-356. [PMID: 33279897 DOI: 10.1159/000511622] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 09/08/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Dysbiosis of oral microbiota is implicated not only in oral inflammatory lesions, but also in a variety of extraoral diseases. The etiology of palmoplantar pustulosis (PPP) remains unclear; however, it has been suggested that chronic inflammation caused by periodontopathic bacterial infection may play a role. OBJECTIVES/METHODS To determine whether patients with PPP have altered diversity and composition of oral microbiota, we conducted the 16S rDNA analysis using saliva samples collected from 21 outpatients with PPP and 10 healthy individuals. RESULTS We found that the proportion of bacteria in the phylum Proteobacteria was significantly lower in PPP patients (p = 0.025). At the genus level, patients with PPP had a significantly lower abundance of Neisseria (p = 0.014), which best accounted for the observed decrease in Proteobacteria. We also identified multiple minor genera and species that were represented at a significantly higher level in the PPP group, several of which have been associated with periodontal diseases. CONCLUSION Our results suggest a possible link between PPP and dysbiosis of oral microbiota, particularly the lower abundance of Neisseria, the most predominant genus of Proteobacteria in healthy oral microbiota. Probiotics that improves oral dysbiosis may be beneficial for patients with PPP as an adjunctive therapy.
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Affiliation(s)
- Yasunari Kageyama
- Takanawa Clinic, Minato-ku, Tokyo, Japan.,Tokai University Hospital, Isehara-shi, Kanagawa, Japan
| | | | | | | | | | - Tetsu Akiyama
- Laboratory of Molecular and Genetic Information, Institute for Quantitative Biosciences, The University of Tokyo, Tokyo, Japan
| | - Tsutomu Nakamura
- Laboratory of Molecular and Genetic Information, Institute for Quantitative Biosciences, The University of Tokyo, Tokyo, Japan,
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Paju S, Pietiäinen M, Liljestrand JM, Lahdentausta L, Salminen A, Kopra E, Mäntylä P, Buhlin K, Hörkkö S, Sinisalo J, Pussinen PJ. Carotid artery calcification in panoramic radiographs associates with oral infections and mortality. Int Endod J 2020; 54:15-25. [PMID: 32865251 DOI: 10.1111/iej.13394] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 08/24/2020] [Indexed: 12/23/2022]
Abstract
AIM To study the prevalence of carotid artery calcification (CAC) in relation to apical and marginal periodontitis, subgingival dysbiotic bacterial species and serum and saliva immune responses against them. In addition, the aim was to analyse the association of CAC with angiographically verified coronary artery disease (CAD) and mortality. METHODOLOGY In the present random Parogene cohort, the patients had an indication for coronary angiography. Apical and marginal periodontitis were diagnosed during clinical and radiographic oral examinations, and CAC on panoramic radiographs (n = 492). Presence and severity of CAD were registered from angiography. Subgingival dysbiotic bacterial species were quantitated using checkerboard DNA-DNA-hybridization, and serum and saliva antibody levels were determined by immunoassays. The cohort was followed-up for 10 years or until death (median 9.9, range 0.21-10.4) via linkage to the national death register. The statistical models were adjusted for age, gender, smoking, hypertension, diabetes and dyslipidemia. RESULTS A total of 102 (20.7%) patients had detectable CAC, which was moderate in 81 (16.4%) and severe in 21 (4.3%). CAC was associated (OR, 95% CI) with severe apical periodontitis (2.25, 1.15-4.41), root canal fillings (1.15, 1.04-1.26), alveolar bone loss (2.66, 1.21-5.84), severe periodontal inflammation (2.23, 1.11-4.47), high level of gram-negative subgingival species (2.73, 1.34-5.50), saliva IgG against dysbiotic species (1.05, 1.01-1.10/unit) and severe (2.58, 1.36-4.90) and chronic (2.13, 1.15-3.93) CAD. A total of 105 (20.7%) patients died during the follow-up and 53 (10.4%) deaths were because of cardiovascular diseases (CVD). Severe CAC predicted worse survival with HRs (95% CI) of 3.08 (1.58-6.06) for all-cause and 3.43 (1.42-8.25) for CVD death. CONCLUSIONS CAC on panoramic tomography was associated with (i) apical and marginal periodontitis and dysbiotic bacterial species giving rise to an immunological response, and with (ii) severe, chronic CAD and increased mortality. The results further emphasize the role of oral infections in CAD and the importance of referring a patient with CAC for a cardiovascular evaluation.
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Affiliation(s)
- S Paju
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - M Pietiäinen
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - J M Liljestrand
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - L Lahdentausta
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - A Salminen
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - E Kopra
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - P Mäntylä
- Oral and Maxillofacial Diseases, Institute of Dentistry, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland
| | - K Buhlin
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Division of Periodontology, Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
| | - S Hörkkö
- Research Unit of Biomedicine, Medical Microbiology and Immunology, Faculty of Medicine, University of Oulu, Oulu, Finland.,Medical Research Center and Nordlab Oulu, University Hospital and University of Oulu, Oulu, Finland
| | - J Sinisalo
- Heart and Lung Center, Helsinki University Hospital and Helsinki University, Helsinki, Finland
| | - P J Pussinen
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Sierra MA, Li Q, Pushalkar S, Paul B, Sandoval TA, Kamer AR, Corby P, Guo Y, Ruff RR, Alekseyenko AV, Li X, Saxena D. The Influences of Bioinformatics Tools and Reference Databases in Analyzing the Human Oral Microbial Community. Genes (Basel) 2020; 11:genes11080878. [PMID: 32756341 PMCID: PMC7465726 DOI: 10.3390/genes11080878] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/11/2020] [Accepted: 07/29/2020] [Indexed: 12/20/2022] Open
Abstract
There is currently no criterion to select appropriate bioinformatics tools and reference databases for analysis of 16S rRNA amplicon data in the human oral microbiome. Our study aims to determine the influence of multiple tools and reference databases on α-diversity measurements and β-diversity comparisons analyzing the human oral microbiome. We compared the results of taxonomical classification by Greengenes, the Human Oral Microbiome Database (HOMD), National Center for Biotechnology Information (NCBI) 16S, SILVA, and the Ribosomal Database Project (RDP) using Quantitative Insights Into Microbial Ecology (QIIME) and the Divisive Amplicon Denoising Algorithm (DADA2). There were 15 phyla present in all of the analyses, four phyla exclusive to certain databases, and different numbers of genera were identified in each database. Common genera found in the oral microbiome, such as Veillonella, Rothia, and Prevotella, are annotated by all databases; however, less common genera, such as Bulleidia and Paludibacter, are only annotated by large databases, such as Greengenes. Our results indicate that using different reference databases in 16S rRNA amplicon data analysis could lead to different taxonomic compositions, especially at genus level. There are a variety of databases available, but there are no defined criteria for data curation and validation of annotations, which can affect the accuracy and reproducibility of results, making it difficult to compare data across studies.
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Affiliation(s)
- Maria A. Sierra
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Qianhao Li
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Smruti Pushalkar
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Bidisha Paul
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Tito A. Sandoval
- Department of Obstetrics and Gynecology, Weill Cornell Medicine, New York, NY 10065, USA;
| | - Angela R. Kamer
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Patricia Corby
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Yuqi Guo
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Ryan Richard Ruff
- Department of Epidemiology & Health Promotion, New York University College of Dentistry, New York, NY 10010, USA;
| | - Alexander V. Alekseyenko
- The Biomedical Informatics Center, Program for Human Microbiome Research, Department of Public Health Sciences, Department of Oral Health Sciences, Department of Healthcare Leadership and Management, Medical University of South Carolina, Charleston, SC 29425, USA;
| | - Xin Li
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
| | - Deepak Saxena
- Department of Basic Science, New York University College of Dentistry, New York, NY 10010, USA; (M.A.S.); (Q.L.); (S.P.); (B.P.); (A.R.K.); (P.C.); (Y.G.); (X.L.)
- S. Arthur Localio Laboratory, Departments of Surgery New York University School of Medicine, New York, NY 10016, USA
- Correspondence: ; Tel.: +1-212-9989256
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Camargo SEA, Roy T, Carey IV PH, Fares C, Ren F, Clark AE, Esquivel-Upshaw JF. Novel Coatings to Minimize Bacterial Adhesion and Promote Osteoblast Activity for Titanium Implants. J Funct Biomater 2020; 11:jfb11020042. [PMID: 32560139 PMCID: PMC7353544 DOI: 10.3390/jfb11020042] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/08/2020] [Accepted: 06/11/2020] [Indexed: 12/22/2022] Open
Abstract
Titanium nitride (TiN) and silicon carbide (SiC) adhesion properties to biofilm and the proliferation of human osteoblasts were studied. Quaternized titanium nitride (QTiN) was produced by converting the surface nitrogen on TiN to a positive charge through a quaternization process to further improve the antibacterial efficiency. The SiC required a nitridation within the plasma chamber of the surface layer before quaternization could be carried out to produce quaternized SiC (QSiC). The antimicrobial activity was evaluated on the reference strains of Porphyromonas gingivalis for 4 h by fluorescence microscopy using a live/dead viability kit. All the coatings exhibited a lower biofilm coverage compared to the uncoated samples (Ti—85.2%; TiN—24.22%; QTiN—11.4%; SiC—9.1%; QSiC—9.74%). Scanning Electron Microscope (SEM) images confirmed the reduction in P. gingivalis bacteria on the SiC and TiN-coated groups. After 24 h of osteoblast cultivation on the samples, the cell adhesion was observed on all the coated and uncoated groups. Fluorescence images demonstrated that the osteoblast cells adhered and proliferated on the surfaces. TiN and SiC coatings can inhibit the attachment of Porphyromonas gingivalis and promote osteoblast adhesion on the titanium used for implants. These coatings may possess the ability to prevent the development of peri-implantitis and stimulate osteointegration.
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Affiliation(s)
- Samira E. A. Camargo
- Department of Restorative Dental Sciences, Division of Prosthodontics, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (S.E.A.C.); (A.E.C.)
| | - Tanaya Roy
- Department of Materials Science Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL 32611, USA;
| | - Patrick H. Carey IV
- Department of Chemical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL 32611, USA; (P.H.C.IV); (C.F.); (F.R.)
| | - Chaker Fares
- Department of Chemical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL 32611, USA; (P.H.C.IV); (C.F.); (F.R.)
| | - Fan Ren
- Department of Chemical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL 32611, USA; (P.H.C.IV); (C.F.); (F.R.)
| | - Arthur E. Clark
- Department of Restorative Dental Sciences, Division of Prosthodontics, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (S.E.A.C.); (A.E.C.)
| | - Josephine F. Esquivel-Upshaw
- Department of Restorative Dental Sciences, Division of Prosthodontics, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (S.E.A.C.); (A.E.C.)
- Correspondence: ; Tel.: +1-352-273-6928
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9
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Qian W, Ma T, Ye M, Li Z, Liu Y, Hao P. Microbiota in the apical root canal system of tooth with apical periodontitis. BMC Genomics 2019; 20:189. [PMID: 30967114 PMCID: PMC6456935 DOI: 10.1186/s12864-019-5474-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background Apical periodontitis (AP) is essentially an inflammatory disease of microbial etiology primarily caused by infection of the pulp and root canal system. Variation of the bacterial communities caused by AP, as well as their changes responding to dental therapy, are of utmost importance to understand the pathogensis of the apical periodontitis and establishing effective antimicrobial therapeutic strategies. This study aims to uncover the composition and diversity of microbiota associated to the root apex to identify the relevant bacteria highly involved in AP, with the consideration of root apex samples from the infected teeth (with/without root canal treatment), healthy teeth as well as the healthy oral. Methods Four groups of specimens are considered, the apical part of root from diseased teeth with and without root canal treatment, and wisdom teeth extracted to avoid being impacted (tooth healthy control), as well as an additional healthy oral control from biofilm of the buccal mucosa. DNA was extracted from these specimens and the microbiome was examined through focusing on the V3-V4 hypervariable region of the 16S rRNA gene using sequencing on Illumina MiSeq platform. Composition and diversity of the bacterial community were tested for individual samples, and between-group comparisons were done through differential analysis to identify the significant changes. Results We observed reduced community richness and diversity in microbiota samples from diseased teeth compared to healthy controls. Through differential analysis between AP teeth and healthy teeth, we identified 49 OTUs significantly down-regulated as well as 40 up-regulated OTUs for AP. Conclusion This study provides a global view of the microbial community of the AP associated cohorts, and revealed that AP involved not only bacteria accumulated with a high abundance, but also those significantly reduced ones due to microbial infection. Electronic supplementary material The online version of this article (10.1186/s12864-019-5474-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Wenhao Qian
- Shanghai Xuhui District Dental Center, Shanghai, 200032, China
| | - Ting Ma
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Mao Ye
- Shanghai Xuhui District Dental Center, Shanghai, 200032, China
| | - Zhiyao Li
- Shanghai Xuhui District Dental Center, Shanghai, 200032, China
| | - Yuanhua Liu
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Pei Hao
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China.
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Oral bacterial colonization on dental implants restored with titanium or zirconia abutments: 6-month follow-up. Clin Oral Investig 2018; 22:2335-2343. [DOI: 10.1007/s00784-018-2334-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/02/2018] [Indexed: 12/14/2022]
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Zhang Y, Zhen M, Zhan Y, Song Y, Zhang Q, Wang J. Population-Genomic Insights into Variation in Prevotella intermedia and Prevotella nigrescens Isolates and Its Association with Periodontal Disease. Front Cell Infect Microbiol 2017; 7:409. [PMID: 28983469 PMCID: PMC5613308 DOI: 10.3389/fcimb.2017.00409] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 09/04/2017] [Indexed: 12/19/2022] Open
Abstract
High-throughput sequencing has helped to reveal the close relationship between Prevotella and periodontal disease, but the roles of subspecies diversity and genomic variation within this genus in periodontal diseases still need to be investigated. We performed a comparative genome analysis of 48 Prevotella intermedia and Prevotella nigrescens isolates that from the same cohort of subjects to identify the main drivers of their pathogenicity and adaptation to different environments. The comparisons were done between two species and between disease and health based on pooled sequences. The results showed that both P. intermedia and P. nigrescens have highly dynamic genomes and can take up various exogenous factors through horizontal gene transfer. The major differences between disease-derived and health-derived samples of P. intermedia and P. nigrescens were factors related to genome modification and recombination, indicating that the Prevotella isolates from disease sites may be more capable of genomic reconstruction. We also identified genetic elements specific to each sample, and found that disease groups had more unique virulence factors related to capsule and lipopolysaccharide synthesis, secretion systems, proteinases, and toxins, suggesting that strains from disease sites may have more specific virulence, particularly for P. intermedia. The differentially represented pathways between samples from disease and health were related to energy metabolism, carbohydrate and lipid metabolism, and amino acid metabolism, consistent with data from the whole subgingival microbiome in periodontal disease and health. Disease-derived samples had gained or lost several metabolic genes compared to healthy-derived samples, which could be linked with the difference in virulence performance between diseased and healthy sample groups. Our findings suggest that P. intermedia and P. nigrescens may serve as “crucial substances” in subgingival plaque, which may reflect changes in microbial and environmental dynamics in subgingival microbial ecosystems. This provides insight into the potential of P. intermedia and P. nigrescens as new predictive biomarkers and targets for effective interventions in periodontal disease.
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Affiliation(s)
- Yifei Zhang
- Central Laboratory, Peking University School and Hospital of StomatologyBeijing, China
| | - Min Zhen
- Department of Periodontology, Peking University School and Hospital of StomatologyBeijing, China
| | - Yalin Zhan
- Department of Periodontology, Peking University School and Hospital of StomatologyBeijing, China
| | - Yeqing Song
- Central Laboratory, Peking University School and Hospital of StomatologyBeijing, China
| | - Qian Zhang
- Central Laboratory, Peking University School and Hospital of StomatologyBeijing, China
| | - Jinfeng Wang
- Computational Genomics Lab, Beijing Institutes of Life Science, Chinese Academy of SciencesBeijing, China
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