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Ma XX, Zhou XY, Feng MG, Ji YT, Song FF, Tang QC, He Q, Zhang YF. Dual Role of IGF2BP2 in Osteoimmunomodulation during Periodontitis. J Dent Res 2024; 103:208-217. [PMID: 38193302 DOI: 10.1177/00220345231216115] [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] [Indexed: 01/10/2024] Open
Abstract
Periodontitis is a complex disease characterized by distinct inflammatory stages, with a peak of inflammation in the early phase and less prominent inflammation in the advanced phase. The insulin-like growth factor 2-binding proteins 2 (IGF2BP2) has recently been identified as a new m6A reader that protects m6A-modified messenger RNAs (mRNAs) from decay, thus participating in multiple biological processes. However, its role in periodontitis remains unexplored. Here, we investigated the role of IGF2BP2 in inflammation and osteoclast differentiation using a ligature-induced periodontitis model. Our findings revealed that IGF2BP2 responded to bacterial-induced inflammatory stimuli and exhibited differential expression patterns in early and advanced periodontitis stages, suggesting its dual role in regulating this disease. Depletion of Igf2bp2 contributed to increased release of inflammatory cytokines, thereby exacerbating periodontitis after 3 d of ligature while suppressing osteoclast differentiation and ameliorating periodontitis after 14 d of ligature. Mechanistically, we demonstrated that IGF2BP2 directly interacted with Cd5l and Cd36 mRNA via RNA immunoprecipitation assay. Overexpression of CD36 or recombinant CD5L rescued the osteoclast differentiation ability of Igf2bp2-null cells upon lipopolysaccharide stimulus, and thus the downregulation of Cd36 and Cd5l effectively reversed periodontitis in the advanced stage. Altogether, this study deepens our understanding of the potential mechanistic link among the dysregulated m6A reader IGF2BP2, immunomodulation, and osteoclastogenesis during different stages of periodontitis.
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Affiliation(s)
- X X Ma
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - X Y Zhou
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - M G Feng
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Y T Ji
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - F F Song
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Q C Tang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Q He
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Y F Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
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Liu S, Fu Y, Ziebolz D, Li S, Schmalz G, Li F. Transcriptomic analysis reveals pathophysiological relationship between chronic obstructive pulmonary disease (COPD) and periodontitis. BMC Med Genomics 2022; 15:130. [PMID: 35676670 PMCID: PMC9175353 DOI: 10.1186/s12920-022-01278-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 05/24/2022] [Indexed: 12/02/2022] Open
Abstract
Background The aim of this study was to detect potential crosstalk genes, pathways and immune cells between periodontitis and chronic obstructive pulmonary disease (COPD). Methods Chronic periodontitis (CP, GSE156993) and COPD (GSE42057, GSE94916) datasets were downloaded. Differential expressed genes (DEGs; p < 0.05) were assessed and screened for overlapping results, following functional pathway enrichment analyses (p < 0.05). The xCell method was used to assess immune cell infiltration relationship between CP and COPD. Features of the detected cross-talk genes were revealed using conventional Recursive Feature Elimination (RFE) algorithm in R project. Receiver-operating characteristic curves were applied to evaluate the predictive value of the genes. Furthermore, Pearson correlation analysis was performed on crosstalk markers and infiltrating immune cells in CP and COPD, respectively. Results A total of 904 DEGs of COPD and 763 DEGs of CP were acquired, showing 22 overlapping DEGs between the two diseases. Thereby 825 nodes and 923 edges were found in the related protein–protein-interaction network. Eight immune cell pairs were found to be highly correlated to both CP and COPD (|correlation coefficients |> 0.5 and p-value < 0.05). Most immune cells were differently expressed between COPD and CP. RFE identified three crosstalk genes, i.e. EPB41L4A-AS1, INSR and R3HDM1. In correlation analysis, INSR was positively correlated with Hepatocytes in CP (r = 0.6714, p = 0.01679) and COPD (r = 0.5209, p < 0.001). R3HDM was positively correlated with Th1 cells in CP (r = 0.6783, p = 0.0153) and COPD (r = 0.4120, p < 0.01). Conclusion EPB41L4A-AS1, INSR and R3HDM1 are potential crosstalk genes between COPD and periodontitis. R3HDM was positively correlated with Th1 cells in both diseases, while INSR was positively correlated with Hepatocytes in periodontitis and COPD, supporting a potential pathophysiological relationship between periodontitis and COPD.
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Affiliation(s)
- Shuqin Liu
- Department of Stomatology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Aiguo Road No. 152, Nanchang, 330006, Jiangxi Province, China
| | - Yun Fu
- Department of General Practice, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Aiguo Road No. 152, Nanchang, 330006, Jiangxi Province, China
| | - Dirk Ziebolz
- Department of Cariology, Endodontology and Periodontology, University Leipzig, Liebigstr. 12, 04103, Leipzig, Germany
| | - Simin Li
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, Guangdong Province, China
| | - Gerhard Schmalz
- Department of Cariology, Endodontology and Periodontology, University Leipzig, Liebigstr. 12, 04103, Leipzig, Germany
| | - Fan Li
- Department of Pulmonary and Critical Care Medicine, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Aiguo Road No. 152, Nanchang, 330006, Jiangxi Province, China.
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Kumari M, Kumar T, Rai S, Rai A, Sultana R, Priya L. Evaluation of Dental Health in Terminally Ill Patients. J Med Life 2020; 13:321-328. [PMID: 33072203 PMCID: PMC7550152 DOI: 10.25122/jml-2020-0023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Dental health plays an imperative role in the general health and well-being of an individual. Terminally ill patients due to a compromised immune response are susceptible to a wide array of oral complications, which may affect their ability to speak and chew, leading to malnutrition. The present study was conducted to evaluate dental health and various oral manifestations in terminally ill patients. One hundred twenty terminally ill patients hospitalized with diseases of the respiratory tract, gastrointestinal tract, circulatory system, liver, and endocrinal disorders were included in the study. The evaluation of oral manifestations and their prevalence was done by a single examiner. The oral health was evaluated according to symptoms exhibited by the patients and clinical presentation. Of the patients included in the study, 78 were male, and 42 were female. All the individuals were adults between 25 to 55 years of age. Out of 120 admitted terminally ill patients, 27 subjects had respiratory diseases, 17 had gastrointestinal disorders, 5 had disorders of the circulatory system, 39 had liver disorders, and 32 had endocrine disorders. A need for added comprehension is mandatory to link the inter-relationships between dentistry and medicine to further perk up the management of the overall health of patients, which will further reinforce the partnership between dental and medical communities.
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Affiliation(s)
- Minti Kumari
- Department of Public Health Dentistry, Patna Dental College and Hospital, Patna, India
| | - Tanoj Kumar
- Department of Oral Pathology and Microbiology, Patna Dental College and Hospital, Patna, India
| | - Shweta Rai
- Department of Oral and Maxillofacial Surgery, Buddha Institute of Dental Sciences and Hospital, Kankarbagh, Patna, India
| | - Anurag Rai
- Department of Orthodontics, Patna Dental College and Hospital, Bankipore, Patna, India
| | | | - Leena Priya
- Department of Oral Medicine And Radiology, Buddha Institute of Dental Science and Hospital, Patna, India
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What are the effects of IL-1β (rs1143634), IL-17A promoter (rs2275913) and TLR4 (rs4986790) gene polymorphism on the outcomes of infection with H. pylori within as Iranian population; A systematic review and meta-analysis. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100735] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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In Vitro Evaluation of the Antimicrobial and Immunomodulatory Activity of Culinary Herb Essential Oils as Potential Perioceutics. Antibiotics (Basel) 2020; 9:antibiotics9070428. [PMID: 32708120 PMCID: PMC7399839 DOI: 10.3390/antibiotics9070428] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/13/2020] [Accepted: 07/15/2020] [Indexed: 12/21/2022] Open
Abstract
Due to their antimicrobial, immunomodulatory, antioxidant, and regenerative activities, culinary herbs have multiple medicinal uses, among which to prevent and treat oral diseases. The whole essential oils (EOs) have multiple advantages over purified components, such as a low probability to select for antimicrobial resistance, synergic effects of different components, and multi-pharmacological activities. In this study, we aimed to evaluate essential oils from Salvia officinalis (sage), Satureja hortensis (summer savory), and Anethum graveolens (dill) using an in vitro analysis of their antimicrobial activity against Gram-positive and Gram-negative bacterial strains isolated from the oral cavity of patients with periodontitis; the assays addressed both the planktonic and biofilm growth states and used culture-based approaches. Some of the tested EOs exhibited excellent bactericidal and antibiofilm activity, being active at concentrations as low as 0.08-1.36 mg/mL. Flow cytometry was used to investigate the potential mechanisms of their antibacterial activity and confirmed that the tested EOs act by permeabilizing the bacterial membrane and by inhibiting the activity of the efflux pumps. The immunomodulatory effect of the three EOs was determined by analyzing the gene expression profiles for pro- and anti-inflammatory cytokines of the THP-1 cells. The summer savory EO induced a clear proinflammatory effect, while the others did not significantly influence the cytokines profile of the tested cells. Taken together, our results indicate that summer savory EO and, to a lesser extent, sage and dill EOs could be used to inhibit bacteria involved in oral plaque formation and to reduce the expression of genes known to contribute to the inflammatory response using cell culture assessment.
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Willis JR, Gabaldón T. The Human Oral Microbiome in Health and Disease: From Sequences to Ecosystems. Microorganisms 2020; 8:microorganisms8020308. [PMID: 32102216 PMCID: PMC7074908 DOI: 10.3390/microorganisms8020308] [Citation(s) in RCA: 200] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/14/2020] [Accepted: 02/16/2020] [Indexed: 02/07/2023] Open
Abstract
Abstract: The human oral cavity is home to an abundant and diverse microbial community (i.e., the oral microbiome), whose composition and roles in health and disease have been the focus of intense research in recent years. Thanks to developments in sequencing-based approaches, such as 16S ribosomal RNA metabarcoding, whole metagenome shotgun sequencing, or meta-transcriptomics, we now can efficiently explore the diversity and roles of oral microbes, even if unculturable. Recent sequencing-based studies have charted oral ecosystems and how they change due to lifestyle or disease conditions. As studies progress, there is increasing evidence of an important role of the oral microbiome in diverse health conditions, which are not limited to diseases of the oral cavity. This, in turn, opens new avenues for microbiome-based diagnostics and therapeutics that benefit from the easy accessibility of the oral cavity for microbiome monitoring and manipulation. Yet, many challenges remain ahead. In this review, we survey the main sequencing-based methodologies that are currently used to explore the oral microbiome and highlight major findings enabled by these approaches. Finally, we discuss future prospects in the field.
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Affiliation(s)
- Jesse R. Willis
- Barcelona Supercomputing Centre (BCS-CNS), Jordi Girona, 29., 08034 Barcelona, Spain
- Institute for Research in Biomedicine (IRB), The Barcelona Institute of Science and Technology (BIST), 08034 Barcelona, Spain
| | - Toni Gabaldón
- Barcelona Supercomputing Centre (BCS-CNS), Jordi Girona, 29., 08034 Barcelona, Spain
- Institute for Research in Biomedicine (IRB), The Barcelona Institute of Science and Technology (BIST), 08034 Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23, 08010 Barcelona, Spain
- Correspondence:
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Lopes Kubitza FM, Anthony JMG. Topical oral 1-tetradecanol complex in the treatment of periodontal diseases in cats. J Feline Med Surg 2019; 21:1141-1148. [PMID: 30652935 PMCID: PMC10814267 DOI: 10.1177/1098612x18820734] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
OBJECTIVES The aim of this study was to evaluate the outcomes of the treatment of chronic periodontal disease with an oral application of tetradecanol complex (1-TDC) in cats. METHODS The test group (n = 9) received 1-TDC (525 mg per gel capsule/day) and the placebo group (n = 4) received olive oil (0.25 ml per gel capsule/day) for 6 weeks. RESULTS Oral treatment with 1-TDC resulted in significant reductions in all parameters of clinical periodontal disease except tooth mobility at 6 weeks. The 1-TDC group exhibited a statistically significant reduction in pocket depth, clinical attachment loss, gingival index and bleeding on probing after treatment at 6 weeks, whereas the placebo group did not show any significant change. CONCLUSIONS AND RELEVANCE Chronic inflammation associated with periodontal diseases leads to periodontal tissue destruction. As a result, modulation of the host response has been included in the treatment protocol for periodontal diseases. Fatty acids present anti-inflammatory properties and are being investigated for use in the treatment and prevention of progressive periodontal diseases.
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Prolyl hydroxylase inhibitor DMOG suppressed inflammatory cytokine production in human gingival fibroblasts stimulated with Fusobacterium nucleatum. Clin Oral Investig 2018; 23:3123-3132. [PMID: 30411281 DOI: 10.1007/s00784-018-2733-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Accepted: 10/23/2018] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Fusobacterium nucleatum (F. nucleatum) is one of the most common bacteria involved in the initiation and progression of periodontal diseases. Pharmacological inhibitor of prolyl hydroxylases (PHDs), dimethyloxallyl glycine (DMOG), has been reported to exert anti-inflammatory effects. The aim of this investigation was to evaluate the role of DMOG in inflammatory cytokine production of human gingival fibroblasts (HGFs) stimulated with F. nucleatum. MATERIAL AND METHODS HGFs were pretreated with 10, 50, and 100 μM DMOG for 24 h before infected with F. nucleatum (MOI = 100). Cell morphology and survival after infection with F. nucleatum were determined by crystal violet staining assay. The mRNA levels of interleukin (IL)-6, IL-8, tumor necrosis factor (TNF)-α, and IL-1β were evaluated by quantitative real-time polymerase chain reaction (qRT-PCR). The production of IL-6, IL-8, TNF-α, and IL-1β was assessed by enzyme-linked immunosorbent assay (ELISA). RESULTS F. nucleatum did not affect the morphology and survival of HGFs by the concentrations of MOI (multiplicity of infection) = 10, 50, and 100. The mRNA levels of IL-6, IL-8, TNF-α, and IL-1β were significantly enhanced with the stimulation of F. nucleatum, and the maximal effect reached at 6 h. The secretion of IL-6, IL-8, and TNF-α was significantly upregulated by the infection of F. nucleatum while the production of IL-1β was nearly unchanged. Above all, DMOG suppressed F. nucleatum-stimulated IL-6, IL-8, TNF-α, and IL-1β expressions. CONCLUSIONS These data indicate that prolyl hydroxylase inhibitor DMOG partly downregulates inflammatory cytokine expression in F. nucleatum-infected HGFs. CLINICAL RELEVANCE DMOG may provide a novel strategy for the therapy of periodontitis.
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Nędzi-Góra M, Kowalski J, Górska R. The Immune Response in Periodontal Tissues. Arch Immunol Ther Exp (Warsz) 2017; 65:421-429. [PMID: 28589230 DOI: 10.1007/s00005-017-0472-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 02/24/2017] [Indexed: 12/29/2022]
Abstract
The uniqueness of periodontal diseases is caused by several factors. This group of diseases is caused by numerous bacterial species formed in the dental biofilm, and one cannot distinguish the specific pathogen that is responsible for the disease initiation or progress (though Gram-negative anaerobic rods are associated with the advanced form of the disease). The disease is both infectious and inflammatory in its nature, and in the state of health there is always a subclinical level of inflammatory response, caused by the so-called harmless bacteria. Negligence in oral hygiene may result in maturation of the biofilm and trigger host response, manifesting clinically as gingivitis or-later and in susceptible subjects-as periodontitis. The article presents the contemporary knowledge of the inflammatory reaction occurring in tissues surrounding the tooth during periodontal inflammation. The most important mechanisms are described, together with implications for clinicists.
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Affiliation(s)
- Małgorzata Nędzi-Góra
- Department of Periodontology and Oral Diseases, Medical University of Warsaw, Miodowa 18, Warsaw, 00-246, Poland.
| | - Jan Kowalski
- Department of Periodontology and Oral Diseases, Medical University of Warsaw, Miodowa 18, Warsaw, 00-246, Poland
| | - Renata Górska
- Department of Periodontology and Oral Diseases, Medical University of Warsaw, Miodowa 18, Warsaw, 00-246, Poland
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Identification of Bacteria Associated with a Periodontal Disease in Thai Patients Based on Next-Generation Sequencing. Jundishapur J Microbiol 2017. [DOI: 10.5812/jjm.13646] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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Ai D, Huang R, Wen J, Li C, Zhu J, Xia LC. Integrated metagenomic data analysis demonstrates that a loss of diversity in oral microbiota is associated with periodontitis. BMC Genomics 2017; 18:1041. [PMID: 28198672 PMCID: PMC5310281 DOI: 10.1186/s12864-016-3254-5] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Abstract
Background Periodontitis is an inflammatory disease affecting the tissues supporting teeth (periodontium). Integrative analysis of metagenomic samples from multiple periodontitis studies is a powerful way to examine microbiota diversity and interactions within host oral cavity. Methods A total of 43 subjects were recruited to participate in two previous studies profiling the microbial community of human subgingival plaque samples using shotgun metagenomic sequencing. We integrated metagenomic sequence data from those two studies, including six healthy controls, 14 sites representative of stable periodontitis, 16 sites representative of progressing periodontitis, and seven periodontal sites of unknown status. We applied phylogenetic diversity, differential abundance, and network analyses, as well as clustering, to the integrated dataset to compare microbiological community profiles among the different disease states. Results We found alpha-diversity, i.e., mean species diversity in sites or habitats at a local scale, to be the single strongest predictor of subjects’ periodontitis status (P < 0.011). More specifically, healthy subjects had the highest alpha-diversity, while subjects with stable sites had the lowest alpha-diversity. From these results, we developed an alpha-diversity logistic model-based naive classifier able to perfectly predict the disease status of the seven subjects with unknown periodontal status (not used in training). Phylogenetic profiling resulted in the discovery of nine marker microbes, and these species are able to differentiate between stable and progressing periodontitis, achieving an accuracy of 94.4%. Finally, we found that the reduction of negatively correlated species is a notable signature of disease progression. Conclusions Our results consistently show a strong association between the loss of oral microbiota diversity and the progression of periodontitis, suggesting that metagenomics sequencing and phylogenetic profiling are predictive of early periodontitis, leading to potential therapeutic intervention. Our results also support a keystone pathogen-mediated polymicrobial synergy and dysbiosis (PSD) model to explain the etiology of periodontitis. Apart from P. gingivalis, we identified three additional keystone species potentially mediating the progression of periodontitis progression based on pathogenic characteristics similar to those of known keystone pathogens.
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Affiliation(s)
- Dongmei Ai
- School of Mathematics and Physics, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China
| | - Ruocheng Huang
- School of Mathematics and Physics, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China
| | - Jin Wen
- Department of Prosthodontics, Ninth People's Hospital Affiliated with Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China.,Oral Bioengineering Lab, Shanghai Research Institute of Stomatology, Ninth People's Hospital Affiliated with Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Chao Li
- School of Mathematics and Physics, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China
| | - Jiangping Zhu
- School of Mathematics and Physics, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China
| | - Li Charlie Xia
- Department of Medicine, Stanford University School of Medicine, 269 Campus Dr., Stanford, CA, 94305, USA. .,Department of Statistics, The Wharton School, University of Pennsylvania, 3730 Walnut Street, Philadelphia, PA, 19014, USA.
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Kaur G, Mohindra K, Singla S. Autoimmunity-Basics and link with periodontal disease. Autoimmun Rev 2016; 16:64-71. [PMID: 27664383 DOI: 10.1016/j.autrev.2016.09.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 08/08/2016] [Indexed: 12/24/2022]
Abstract
Autoimmune reactions reflect an imbalance between effector and regulatory immune responses, typically develop through stages of initiation and propagation, and often show phases of resolution (indicated by clinical remissions) and exacerbations (indicated by symptomatic flares). The fundamental underlying mechanism of autoimmunity is defective elimination and/or control of self-reactive lymphocytes. Periodontal diseases are characterized by inflammatory conditions that directly affect teeth-supporting structures, which are the major cause of tooth loss. Several studies have demonstrated the involvement of autoimmune responses in periodontal disease. Evidence of involvement of immunopathology has been reported in periodontal disease. Bacteria in the dental plaque induce antibody formation. Autoreactive T-cells, natural killer cells, ANCA, heat shock proteins, autoantibodies, and genetic factors are reported to have an important role in the autoimmune component of periodontal disease. The present review describes the involvement of autoimmune responses in periodontal diseases and also the mechanisms underlying these responses.
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Affiliation(s)
- Gagandeep Kaur
- Department of Periodontology and Oral Implantology, Genesis Institute of Dental Sciences and Research, Punjab.
| | - Kanika Mohindra
- Department of Periodontology and Oral Implantology, Laxmi Bai Dental College and Hospital, Patiala, Punjab, India.
| | - Shifali Singla
- Department of Oral and Maxillofacial Surgery, Adesh Institute of Dental Sciences and Research, Bathinda, Punjab, India.
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Marques CPC, Maor Y, de Andrade MS, Rodrigues VP, Benatti BB. Possible evidence of systemic lupus erythematosus and periodontal disease association mediated by Toll-like receptors 2 and 4. Clin Exp Immunol 2015; 183:187-92. [PMID: 26386242 DOI: 10.1111/cei.12708] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/17/2015] [Indexed: 12/13/2022] Open
Abstract
Toll-like receptors (TLRs) participate in the innate immune response and trigger the immune responses of the body. Systemic lupus erythematosus (SLE) is an autoimmune disease of unknown aetiology, characterized by an excessive autoimmune response in the body affecting the connective tissues. The disease is possibly triggered by both environmental aetiological factors and pathological organic processes such as exposure to sunlight, chronic infectious processes and genetic factors. Conversely, periodontal disease is an infectious disease caused by microorganisms in the oral cavity, resulting in a chronic inflammatory process which continuously stimulates the immune response, thus causing damage to the periodontal tissues. The expression of both TLR-2 and TLR-4 receptors are increased in both SLE and periodontal disease. Periodontitis might trigger excessive activation of immune response occurring in SLE by maintaining a high expression of TLRs, leading in turn to the acceleration of the onset and progression of autoimmune reactions. In addition, periodontal treatment is able to reduce the expression of these receptors and therefore the symptoms of SLE. Here we discuss the possible interaction between SLE and periodontitis, and suggest further studies evaluating common features in both factors that could explored, due to morbidity and mortality of SLE and the high incidence of periodontal infections around the world.
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Affiliation(s)
- C P C Marques
- Department of Dentistry, Federal University of Maranhão, São Luís, Brazil
| | - Y Maor
- Division of Public Health, The Hebrew University Center of Excellence in Agriculture and Environmental Health, Jerusalem, Israel
| | - M S de Andrade
- Department of Physiological Sciences, Federal University of Maranhão, São Luís, Brazil
| | - V P Rodrigues
- Department of Dentistry, Federal University of Maranhão, São Luís, Brazil
| | - B B Benatti
- Department of Dentistry, Federal University of Maranhão, São Luís, Brazil
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Deficiency of cathepsin K prevents inflammation and bone erosion in rheumatoid arthritis and periodontitis and reveals its shared osteoimmune role. FEBS Lett 2015; 589:1331-1339. [PMID: 25896020 DOI: 10.1016/j.febslet.2015.04.008] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 04/06/2015] [Accepted: 04/08/2015] [Indexed: 12/22/2022]
Abstract
Using rheumatoid arthritis (RA) and periodontitis mouse models, we demonstrate that RA and periodontitis share many pathological features, such as deregulated cytokine production, increased immune-cell infiltration, increased expression of Toll-like receptors (TLRs), and enhanced osteoclast activity and bone erosion. We reveal that genetic deletion of cathepsin K (Ctsk) caused a radical reduction in inflammation and bone erosion within RA joint capsules and periodontal lesions, a drastic decrease in immune-cell infiltration, and a significant reduction in osteoclasts, macrophages, dendritic and T-cells. Deficiency of Ctsk greatly decreased the expression of TLR-4, 5, and 9 and their downstream cytokines in periodontal gingival epithelial lesions and synovial RA lesions. Hence, Ctsk may be targeted to treat RA and periodontitis simultaneously due to its shared osteoimmune role.
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Fabri GMC, Savioli C, Siqueira JT, Campos LM, Bonfá E, Silva CA. [Periodontal disease in pediatric rheumatic diseases]. REVISTA BRASILEIRA DE REUMATOLOGIA 2014; 54:311-7. [PMID: 25627227 DOI: 10.1016/j.rbr.2013.11.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 11/23/2013] [Indexed: 12/15/2022] Open
Abstract
Gingivitis and periodontitis are immunoinflammatory periodontal diseases characterized by chronic localized infections usually associated with insidious inflammation This narrative review discusses periodontal diseases and mechanisms influencing the immune response and autoimmunity in pediatric rheumatic diseases (PRD), particularly juvenile idiopathic arthritis (JIA), childhood-onset systemic lupus erythematosus (C-SLE) and juvenile dermatomyositis (JDM). Gingivitis was more frequently observed in these diseases compared to health controls, whereas periodontitis was a rare finding. In JIA patients, gingivitis and periodontitis were related to mechanical factors, chronic arthritis with functional disability, dysregulation of the immunoinflammatory response, diet and drugs, mainly corticosteroids and cyclosporine. In C-SLE, gingivitis was associated with longer disease period, high doses of corticosteroids, B-cell hyperactivation and immunoglobulin G elevation. There are scarce data on periodontal diseases in JDM population, and a unique gingival pattern, characterized by gingival erythema, capillary dilation and bush-loop formation, was observed in active patients. In conclusion, gingivitis was the most common periodontal disease in PRD. The observed association with disease activity reinforces the need for future studies to determine if resolution of this complication will influence disease course or severity.
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Affiliation(s)
- Gisele M C Fabri
- Divisão de Odontologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil; Faculdade de Odontologia, Universidade Federal de Juiz de Fora, MG, Brasil
| | - Cynthia Savioli
- Divisão de Odontologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - José T Siqueira
- Divisão de Odontologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Lucia M Campos
- Unidade de Reumatologia Pediátrica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Eloisa Bonfá
- Divisão de Reumatologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Clovis A Silva
- Unidade de Reumatologia Pediátrica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil; Divisão de Reumatologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil.
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16
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de Avila ED, de Molon RS, de Godoi Gonçalves DA, Camparis CM. Relationship between levels of neuropeptide Substance P in periodontal disease and chronic pain: a literature review. ACTA ACUST UNITED AC 2014; 5:91-7. [DOI: 10.1111/jicd.12087] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Accepted: 11/24/2013] [Indexed: 01/01/2023]
Affiliation(s)
- Erica Dorigatti de Avila
- Department of Dental Materials and Prosthodontics; School of Dentistry at Araraquara; University of Estadual Paulista - UNESP; Araraquara Sao Paulo Brazil
| | - Rafael Scaf de Molon
- Department of Diagnosis and Surgery; School of Dentistry at Araraquara; University of Estadual Paulista - UNESP; Araraquara Sao Paulo Brazil
| | - Daniela Aparecida de Godoi Gonçalves
- Department of Dental Materials and Prosthodontics; School of Dentistry at Araraquara; University of Estadual Paulista - UNESP; Araraquara Sao Paulo Brazil
| | - Cinara Maria Camparis
- Department of Dental Materials and Prosthodontics; School of Dentistry at Araraquara; University of Estadual Paulista - UNESP; Araraquara Sao Paulo Brazil
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17
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Nagasawa Y, Iio K, Fukuda S, Date Y, Iwatani H, Yamamoto R, Horii A, Inohara H, Imai E, Nakanishi T, Ohno H, Rakugi H, Isaka Y. Periodontal disease bacteria specific to tonsil in IgA nephropathy patients predicts the remission by the treatment. PLoS One 2014; 9:e81636. [PMID: 24489644 PMCID: PMC3904818 DOI: 10.1371/journal.pone.0081636] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 10/15/2013] [Indexed: 12/30/2022] Open
Abstract
Background Immunoglobulin (Ig)A nephropathy (IgAN) is the most common form of primary glomerulonephritis in the world. Some bacteria were reported to be the candidate of the antigen or the pathogenesis of IgAN, but systematic analysis of bacterial flora in tonsil with IgAN has not been reported. Moreover, these bacteria specific to IgAN might be candidate for the indicator which can predict the remission of IgAN treated by the combination of tonsillectomy and steroid pulse. Methods and Findings We made a comprehensive analysis of tonsil flora in 68 IgAN patients and 28 control patients using Denaturing gradient gel electrophoresis methods. We also analyzed the relationship between several bacteria specific to the IgAN and the prognosis of the IgAN. Treponema sp. were identified in 24% IgAN patients, while in 7% control patients (P = 0.062). Haemophilus segnis were detected in 53% IgAN patients, while in 25% control patients (P = 0.012). Campylobacter rectus were identified in 49% IgAN patients, while in 14% control patients (P = 0.002). Multiple Cox proportional-hazards model revealed that Treponema sp. or Campylobactor rectus are significant for the remission of proteinuria (Hazard ratio 2.35, p = 0.019). There was significant difference in remission rates between IgAN patients with Treponema sp. and those without the bacterium (p = 0.046), and in remission rates between IgAN patients with Campylobacter rectus and those without the bacterium (p = 0.037) by Kaplan-Meier analysis. Those bacteria are well known to be related with the periodontal disease. Periodontal bacteria has known to cause immune reaction and many diseases, and also might cause IgA nephropathy. Conclusion This insight into IgAN might be useful for diagnosis of the IgAN patients and the decision of treatment of IgAN.
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Affiliation(s)
- Yasuyuki Nagasawa
- Department of Geriatric Medicine and Nephrology, Osaka University, Graduate School of Medicine, Yamada-oka, Suita, Osaka, Japan
- Division of Kidney and Dialysis, Department of Internal Medicine, Hyogo College of Medicine, Mukogawa-Cho, Nishinomiya, Japan
- * E-mail:
| | - Kenichiro Iio
- Department of Geriatric Medicine and Nephrology, Osaka University, Graduate School of Medicine, Yamada-oka, Suita, Osaka, Japan
| | - Shinji Fukuda
- Laboratory for Epithelial Immunobiology, RIKEN Research Center for Allergy and Immunology, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, Japan
- Graduate School of Nanobioscience, Yokohama City University, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, Japan
- Institute for Advanced Biosciences, Keio University, Mizukami, Kakuganji, Tsuruoka, Yamagata, Japan
| | - Yasuhiro Date
- Laboratory for Epithelial Immunobiology, RIKEN Research Center for Allergy and Immunology, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, Japan
- Department of Life Science and Medical Bioscience, Waseda University, Wakamatsu-cho, Shinjuku-ku, Tokyo, Japan
| | - Hirotsugu Iwatani
- Department of Geriatric Medicine and Nephrology, Osaka University, Graduate School of Medicine, Yamada-oka, Suita, Osaka, Japan
| | - Ryohei Yamamoto
- Department of Geriatric Medicine and Nephrology, Osaka University, Graduate School of Medicine, Yamada-oka, Suita, Osaka, Japan
| | - Arata Horii
- Department of Otolaryngology, Osaka University, Graduate School of Medicine, Yamada-oka, Suita, Osaka, Japan
| | - Hidenori Inohara
- Department of Otolaryngology, Osaka University, Graduate School of Medicine, Yamada-oka, Suita, Osaka, Japan
| | - Enyu Imai
- Department of Geriatric Medicine and Nephrology, Osaka University, Graduate School of Medicine, Yamada-oka, Suita, Osaka, Japan
| | - Takeshi Nakanishi
- Division of Kidney and Dialysis, Department of Internal Medicine, Hyogo College of Medicine, Mukogawa-Cho, Nishinomiya, Japan
| | - Hiroshi Ohno
- Laboratory for Epithelial Immunobiology, RIKEN Research Center for Allergy and Immunology, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, Japan
- Graduate School of Nanobioscience, Yokohama City University, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, Japan
| | - Hiromi Rakugi
- Department of Geriatric Medicine and Nephrology, Osaka University, Graduate School of Medicine, Yamada-oka, Suita, Osaka, Japan
| | - Yoshitaka Isaka
- Department of Geriatric Medicine and Nephrology, Osaka University, Graduate School of Medicine, Yamada-oka, Suita, Osaka, Japan
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Usher AKH, Stockley RA. The link between chronic periodontitis and COPD: a common role for the neutrophil? BMC Med 2013; 11:241. [PMID: 24229090 PMCID: PMC4225606 DOI: 10.1186/1741-7015-11-241] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 11/01/2013] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND The possible relationship between chronic inflammatory diseases and their co-morbidities has become an increasing focus of research. Both chronic periodontitis and chronic obstructive pulmonary disease are neutrophilic, inflammatory conditions characterized by the loss of local connective tissue. Evidence suggests an association and perhaps a causal link between the two diseases. However, the nature of any relationship between them is unclear, but if pathophysiologically established may have wide-reaching implications for targeted treatments to improve outcomes and prognosis. DISCUSSION There have been a number of epidemiological studies undertaken demonstrating an independent association between chronic periodontitis and chronic obstructive pulmonary disease. However, many of them have significant limitations, and drawing firm conclusions regarding causality may be premature. Although the pathology of both these diseases is complex and involves many cell types, such as CD8 positive cells and macrophages, both conditions are predominantly characterized by neutrophilic inflammation. Increasingly, there is evidence that the two conditions are underpinned by similar pathophysiological processes, especially centered on the functions of the neutrophil. These include a disturbance in protease/anti-protease and redox state balance. The association demonstrated by epidemiological studies, as well as emerging similarities in pathogenesis at the level of the neutrophil, suggest a basis for testing the effects of treatment for one condition upon the severity of the other. SUMMARY Although the evidence of an independent association between chronic periodontitis and chronic obstructive pulmonary disease grows stronger, there remains a lack of definitive studies designed to establish causality and treatment effects. There is a need for future research to be focused on answering these questions.
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Affiliation(s)
- Adam K H Usher
- Lung Investigation Unit, Queen Elizabeth Hospital, Mindelsohn Way, Edgbaston, Birmingham B15 2WB, UK.
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Oğuz F, Eltas A, Beytur A, Akdemir E, Uslu MÖ, Güneş A. Is there a relationship between chronic periodontitis and erectile dysfunction? J Sex Med 2012; 10:838-43. [PMID: 23211042 DOI: 10.1111/j.1743-6109.2012.02974.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Chronic periodontitis (CP) is characterized with inflammation of the gingival tissues, which causes endothelial dysfunction in different organs. AIM In this study, we investigated the association of CP with the erectile dysfunction (ED). METHODS The study group included 80 male patients with ED and 82 male patients without ED (control), aged between 30 and 40 years. The International Index of Erectile Function (IIEF) questionnaire was used to assess male sexual function, particularly the presence or absence of ED. MAIN OUTCOME MEASURES The patients in the study and control groups were statistically compared according to their plaque index (PI), bleeding on probing (BoP), probing depth (PD), and clinical attachment level (CAL). RESULTS In the non-ED and the ED groups, the mean age was 35.7 ± 4.8 and 34.9 ± 4.9 years, respectively. Patients' characteristics including body mass index, household income, and education status were similar in both groups (P > 0.05). Nineteen patients (23%) had severe CP in the non-ED group; 42 patients (53%) had severe CP in the ED group. Logistic regression analysis showed a significantly high association between ED and the severity of CP (odds ratio: 3.29, 95% confidence interval: 1.36-9.55, P < 0.01). The mean values of PI, BoP, and the percentages of sites with PD >4 mm and sites with CAL >4 mm were significantly higher in the ED group than in the control group (P < 0.05). The mean values of PD and CAL were not significantly different in the two groups (P > 0.05). The decayed, missing, filled teeth scores were also significantly higher in the ED group than in the non-ED group (P < 0.05). CONCLUSION Our results have suggested that CP had a high association with ED in young adults at 30-40 years. We think that it will be of benefit to consider periodontal disease as a causative clinical condition of ED in such patients.
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Affiliation(s)
- Fatih Oğuz
- Department of Urology, Inonu University, Malatya, Turkey.
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21
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Liu B, Faller LL, Klitgord N, Mazumdar V, Ghodsi M, Sommer DD, Gibbons TR, Treangen TJ, Chang YC, Li S, Stine OC, Hasturk H, Kasif S, Segrè D, Pop M, Amar S. Deep sequencing of the oral microbiome reveals signatures of periodontal disease. PLoS One 2012; 7:e37919. [PMID: 22675498 PMCID: PMC3366996 DOI: 10.1371/journal.pone.0037919] [Citation(s) in RCA: 263] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Accepted: 04/30/2012] [Indexed: 11/18/2022] Open
Abstract
The oral microbiome, the complex ecosystem of microbes inhabiting the human mouth, harbors several thousands of bacterial types. The proliferation of pathogenic bacteria within the mouth gives rise to periodontitis, an inflammatory disease known to also constitute a risk factor for cardiovascular disease. While much is known about individual species associated with pathogenesis, the system-level mechanisms underlying the transition from health to disease are still poorly understood. Through the sequencing of the 16S rRNA gene and of whole community DNA we provide a glimpse at the global genetic, metabolic, and ecological changes associated with periodontitis in 15 subgingival plaque samples, four from each of two periodontitis patients, and the remaining samples from three healthy individuals. We also demonstrate the power of whole-metagenome sequencing approaches in characterizing the genomes of key players in the oral microbiome, including an unculturable TM7 organism. We reveal the disease microbiome to be enriched in virulence factors, and adapted to a parasitic lifestyle that takes advantage of the disrupted host homeostasis. Furthermore, diseased samples share a common structure that was not found in completely healthy samples, suggesting that the disease state may occupy a narrow region within the space of possible configurations of the oral microbiome. Our pilot study demonstrates the power of high-throughput sequencing as a tool for understanding the role of the oral microbiome in periodontal disease. Despite a modest level of sequencing (~2 lanes Illumina 76 bp PE) and high human DNA contamination (up to ~90%) we were able to partially reconstruct several oral microbes and to preliminarily characterize some systems-level differences between the healthy and diseased oral microbiomes.
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Affiliation(s)
- Bo Liu
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, Maryland, United States of America
- Department of Computer Science, University of Maryland, College Park, Maryland, United States of America
| | - Lina L. Faller
- Bioinformatics Program, Boston University, Boston, Massachusetts, United States of America
| | - Niels Klitgord
- Bioinformatics Program, Boston University, Boston, Massachusetts, United States of America
| | - Varun Mazumdar
- Bioinformatics Program, Boston University, Boston, Massachusetts, United States of America
| | - Mohammad Ghodsi
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, Maryland, United States of America
- Department of Computer Science, University of Maryland, College Park, Maryland, United States of America
| | - Daniel D. Sommer
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, Maryland, United States of America
| | - Theodore R. Gibbons
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, Maryland, United States of America
- Biological Sciences Graduate Program, University of Maryland, College Park, Maryland, United States of America
| | - Todd J. Treangen
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, Maryland, United States of America
- The McKusick-Nathans Institute for Genetic Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Yi-Chien Chang
- Bioinformatics Program, Boston University, Boston, Massachusetts, United States of America
| | - Shan Li
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland, United States of America
| | - O. Colin Stine
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland, United States of America
| | - Hatice Hasturk
- The Forysth Institute, Department of Periodontology, Cambridge, Massachusetts, United States of America
| | - Simon Kasif
- Bioinformatics Program, Boston University, Boston, Massachusetts, United States of America
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
- Children’s Informatics Program, Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Boston, Massachusetts, United States of America
| | - Daniel Segrè
- Bioinformatics Program, Boston University, Boston, Massachusetts, United States of America
- Department of Biology, Boston University, Boston, Massachusetts, United States of America
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Mihai Pop
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, Maryland, United States of America
- Department of Computer Science, University of Maryland, College Park, Maryland, United States of America
- Biological Sciences Graduate Program, University of Maryland, College Park, Maryland, United States of America
| | - Salomon Amar
- Bioinformatics Program, Boston University, Boston, Massachusetts, United States of America
- Center for Anti-Inflammatory Therapeutics; Boston University Goldman School of Dental Medicine, Boston, Massachusetts, United States of America
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Pedersen NC, Liu H, Greenfield DL, Echols LG. Multiple autoimmune diseases syndrome in Italian Greyhounds: preliminary studies of genome-wide diversity and possible associations within the dog leukocyte antigen (DLA) complex. Vet Immunol Immunopathol 2011; 145:264-76. [PMID: 22178273 DOI: 10.1016/j.vetimm.2011.11.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 10/24/2011] [Accepted: 11/17/2011] [Indexed: 12/14/2022]
Abstract
A disorder manifested by multiple autoimmune disorders, and resembling autoimmune polyendocrine syndrome type 2 (APS-2) in humans, may exist in Italian Greyhounds. The incidence of this disorder is increasing and its potential impact on the health of the breed is becoming of great concern. The aims of the present study were to document the existence of this syndrome, conduct a preliminary assessment of genetic diversity across the breed and within affected and unaffected dogs, determine whether the disorder associates with the dog leukocyte antigen (DLA) complex, and demonstrate similarities to APS-2 of humans. To these ends, information on disease, pedigrees, and blood or buccal swab samples were collected from affected and healthy Italian Greyhounds and extracted DNA analyzed. Analysis of Y chromosome markers and mitochondrial DNA sequences showed that Italian Greyhounds evolved from a single patriline and two major and four minor matrilines. A panel of 24 highly polymorphic simple tandem repeat (STR) markers across 20 autosomes demonstrated that affected and unaffected dogs were not distinguishable from the population as a whole by heterozygosity, F-statistics, and principal component analysis (PCA). However, analysis of allele frequencies at each STR loci identified regions of increased or decreased disease risk on four chromosomes. A similar genetic analysis using 109 single nucleotide polymorphisms (SNPs) across the DLA region showed differences between affected and unaffected dogs. PCA and zygosity mapping of DLA SNPs from unrelated dogs demonstrated two distinct subpopulations among the affected individuals. One population was very homozygous and the other closely resembled unaffected dogs in its heterozygosity, suggesting the evolution of a disease prone bloodline as a result of non-random selection. Exon 2 sequencing of the DLA class II genes demonstrated 5-8 alleles at each locus and 14 three loci haplotypes. Two specific haplotypes containing DRB1*00203 or DRB1*02901 were associated with increased disease risk in about one-third of affected dogs. However, high density SNP association mapping across the DLA region and CFA12 did not corroborate the association.
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Affiliation(s)
- Niels C Pedersen
- Center for Companion Animal Health, School of Veterinary Medicine, University of California, One Shields Avenue, Davis, CA 95616, USA.
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Guyodo H, Meuric V, Pottier L, Martin B, Faili A, Pers JO, Bonnaure-Mallet M. Colocalization of Porphyromonas gingivalis with CD4+ T cells in periodontal disease. ACTA ACUST UNITED AC 2011; 64:175-83. [DOI: 10.1111/j.1574-695x.2011.00877.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Helene Guyodo
- UPRES-EA 1254; Equipe de Microbiologie; Université Européenne de Bretagne; Université de Rennes 1; IFR 140 G.F.A.S.; Rennes; France
| | | | | | - Bénédicte Martin
- UPRES-EA 1254; Equipe de Microbiologie; Université Européenne de Bretagne; Université de Rennes 1; IFR 140 G.F.A.S.; Rennes; France
| | - Ahmad Faili
- UPRES-EA 1254; Equipe de Microbiologie; Université Européenne de Bretagne; Université de Rennes 1; IFR 140 G.F.A.S.; Rennes; France
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