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Shen S, Sun T, Ding X, Gu X, Wang Y, Ma X, Li Z, Gao H, Ge S, Feng Q. The exoprotein Gbp of Fusobacterium nucleatum promotes THP-1 cell lipid deposition by binding to CypA and activating PI3K-AKT/MAPK/NF-κB pathways. J Adv Res 2024; 57:93-105. [PMID: 37100345 PMCID: PMC10918358 DOI: 10.1016/j.jare.2023.04.007] [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: 01/09/2023] [Revised: 04/07/2023] [Accepted: 04/11/2023] [Indexed: 04/28/2023] Open
Abstract
INTRODUCTION Growing evidence has shown the correlation between periodontitis and atherosclerosis, while our knowledge on the pathogenesis of periodontitis-promoting atherosclerosis is far from sufficient. OBJECTIVES Illuminate the pathogenic effects of Fusobacterium nucleatum (F. nucleatum) on intracellular lipid deposition in THP-1-derived macrophages and elucidate the underlying pathogenic mechanism of how F. nucleatum promoting atherosclerosis. METHODS AND RESULTS F. nucleatum was frequently detected in different kinds of atherosclerotic plaques and its abundance was positively correlated with the proportion of macrophages. In vitro assays showed F. nucleatum could adhere to and invade THP-1 cells, and survive continuously in macrophages for 24 h. F. nucleatum stimulation alone could significantly promote cellular inflammation, lipid uptake and inhibit lipid outflow. The dynamic gene expression of THP-1 cells demonstrated that F. nucleatum could time-serially induce the over-expression of multiple inflammatory related genes and activate NF-κB, MAPK and PI3K-AKT signaling pathways. The exoprotein of F. nucleatum, D-galactose-binding protein (Gbp), acted as one of the main pathogenic proteins to interact with the Cyclophilin A (CypA) of THP-1 cells and induced the activation of the NF- κB, MAPK and PI3K-AKT signaling pathways. Furthermore, use of six candidate drugs targeting to the key proteins in NF- κB, MAPK and PI3K-AKT pathways could dramatically decrease F. nucleatum induced inflammation and lipid deposition in THP-1 cells. CONCLUSIONS This study suggests that the periodontal pathogen F. nucleatum can activate macrophage PI3K-AKT/MAPK/NF-κB signal pathways, promotes inflammation, enhances cholesterol uptake, reduces lipid excretion, and promotes lipid deposition, which may be one of its main strategies promoting the development of atherosclerosis.
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Affiliation(s)
- Song Shen
- Department of Human Microbiome & Periodontology & Implantology & Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan 250012, China
| | - Tianyong Sun
- Department of Human Microbiome & Periodontology & Implantology & Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan 250012, China
| | - Xiangjiu Ding
- Department of Vascular Surgery, General Surgery, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Xiufeng Gu
- Department of Human Microbiome & Periodontology & Implantology & Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan 250012, China
| | - Yushang Wang
- Department of Human Microbiome & Periodontology & Implantology & Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan 250012, China
| | - Xiaomei Ma
- Department of Human Microbiome & Periodontology & Implantology & Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan 250012, China
| | - Zixuan Li
- Department of Human Microbiome & Periodontology & Implantology & Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan 250012, China
| | - Haiting Gao
- Department of Human Microbiome & Periodontology & Implantology & Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan 250012, China
| | - Shaohua Ge
- Department of Human Microbiome & Periodontology & Implantology & Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan 250012, China.
| | - Qiang Feng
- Department of Human Microbiome & Periodontology & Implantology & Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan 250012, China; State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China.
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Hong KY, Ghafari A, Mei Y, Williams JS, Attia D, Forsyth J, Wang K, Wyeld T, Sun C, Glogauer M, King TJ. Oral inflammatory load predicts vascular function in a young adult population: a pilot study. FRONTIERS IN ORAL HEALTH 2023; 4:1233881. [PMID: 37670806 PMCID: PMC10476491 DOI: 10.3389/froh.2023.1233881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 07/13/2023] [Indexed: 09/07/2023] Open
Abstract
Background The periodontium is a highly vascularized area of the mouth, and periodontitis initiates negative functional and structural changes in the vasculature. However, mild oral inflammation, including levels experienced by many apparently healthy individuals, has an unclear impact on cardiovascular function. The purpose of this pilot study is to investigate the effects of objectively measured whole mouth oral inflammatory load (OIL) on vascular function in apparently healthy individuals. Methods In this cross-sectional and correlational analysis, we recruited 28 young (18-30 years) and systemically healthy participants (16 male, 12 female). Using oral neutrophil counts, a validated measure for OIL, we collected participant's mouth rinse samples and quantified OIL. Blood pressure, arterial stiffness (pulse-wave velocity) and endothelial function (brachial artery flow-mediated dilation) were also measured. Results Only oral neutrophil count significantly predicted flow-mediated dilation % (p = 0.04; R2 = 0.16, β = - 1.05) and those with OIL levels associated with >2.5 × 105 neutrophil counts (n = 8) had a lower flow-mediated dilation % (6.0 ± 2.3%) than those with counts associated with gingival health with less than 2.5 × 105 neutrophil counts (10.0 ± 5.2%, p = 0.05). There were no significant predictors for arterial stiffness. Conclusion We found that OIL was a predictor of reduced flow-mediated dilation. An impairment in flow-mediated dilation is an indicator of future possible risk of cardiovascular disease-one of the leading causes of death in North America. Therefore, this study provides evidence for the importance of oral health and that OIL may impact endothelial function.
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Affiliation(s)
- Ker-Yung Hong
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, ON, Canada
| | - Avin Ghafari
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, ON, Canada
| | - Yixue Mei
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, ON, Canada
| | - Jennifer S. Williams
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, ON, Canada
| | - Dina Attia
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, ON, Canada
| | - Jourdyn Forsyth
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, ON, Canada
| | - Kevin Wang
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, ON, Canada
| | - Trevor Wyeld
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, ON, Canada
| | - Chunxiang Sun
- Faculty of Dentistry, University of Toronto, and Dental Oncology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Michael Glogauer
- Faculty of Dentistry, University of Toronto, and Dental Oncology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Trevor J. King
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, ON, Canada
- Department of Health and Physical Education, Faculty of Health, Community and Education, Mount Royal University, Calgary, AB, Canada
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Huang X, Xie M, Lu X, Mei F, Song W, Liu Y, Chen L. The Roles of Periodontal Bacteria in Atherosclerosis. Int J Mol Sci 2023; 24:12861. [PMID: 37629042 PMCID: PMC10454115 DOI: 10.3390/ijms241612861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/05/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Atherosclerosis (AS) is an inflammatory vascular disease that constitutes a major underlying cause of cardiovascular diseases (CVD) and stroke. Infection is a contributing risk factor for AS. Epidemiological evidence has implicated individuals afflicted by periodontitis displaying an increased susceptibility to AS and CVD. This review concisely outlines several prevalent periodontal pathogens identified within atherosclerotic plaques, including Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, and Fusobacterium nucleatum. We review the existing epidemiological evidence elucidating the association between these pathogens and AS-related diseases, and the diverse mechanisms for which these pathogens may engage in AS, such as endothelial barrier disruption, immune system activation, facilitation of monocyte adhesion and aggregation, and promotion of foam cell formation, all of which contribute to the progression and destabilization of atherosclerotic plaques. Notably, the intricate interplay among bacteria underscores the complex impact of periodontitis on AS. In conclusion, advancing our understanding of the relationship between periodontal pathogens and AS will undoubtedly offer invaluable insights and potential therapeutic avenues for the prevention and management of AS.
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Affiliation(s)
- Xiaofei Huang
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.H.); (M.X.); (X.L.); (F.M.); (W.S.)
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Mengru Xie
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.H.); (M.X.); (X.L.); (F.M.); (W.S.)
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Xiaofeng Lu
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.H.); (M.X.); (X.L.); (F.M.); (W.S.)
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Feng Mei
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.H.); (M.X.); (X.L.); (F.M.); (W.S.)
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Wencheng Song
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.H.); (M.X.); (X.L.); (F.M.); (W.S.)
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Yang Liu
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.H.); (M.X.); (X.L.); (F.M.); (W.S.)
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Lili Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.H.); (M.X.); (X.L.); (F.M.); (W.S.)
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
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Association between cardiovascular diseases and periodontal disease: more than what meets the eye. Drug Target Insights 2023; 17:31-38. [PMID: 36761891 PMCID: PMC9906023 DOI: 10.33393/dti.2023.2510] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 11/10/2022] [Indexed: 02/05/2023] Open
Abstract
Cardiovascular diseases (CVDs) are inflammatory diseases of coronary arteries accompanying atheroma formation that can spawn impairment and, in severe cases, death. CVDs are the leading cause of death in the world. In recent decades, investigators have focused their impact on CVD by periodontal disease (PD). PD is a risk factor that can trigger the formation, maturation, and instability of atheroma in the arteries. Two mechanisms have been proposed to explain this relationship: periodontopathic pathogens explicitly invade the circulation or indirectly increase systemic levels of inflammatory mediators. It has been suggested that improvement in disease state has a positive effect on others. This review summarizes evidence from epidemiological studies as well as researches focusing on potential causation channels to deliver a comprehensive representation of the relationship between PD and CVD.
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Fan Z, Tang P, Li C, Yang Q, Xu Y, Su C, Li L. Fusobacterium nucleatum and its associated systemic diseases: epidemiologic studies and possible mechanisms. J Oral Microbiol 2023; 15:2145729. [PMID: 36407281 PMCID: PMC9673791 DOI: 10.1080/20002297.2022.2145729] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Fusobacterium nucleatum (F. nucleatum) is an anaerobic oral commensal and the major coaggregation bridge organism linking early and late colonisers. In recent years, a large number of studies suggest that F. nucleatum is closely related to the development of various systemic diseases, such as cardiovascular diseases, adverse pregnancy outcomes, inflammatory bowel diseases, cancer, Alzheimer's disease, respiratory infection, rheumatoid arthritis, etc. Objective To review the effect of F. nucleatum on systemic diseases and its possible pathogenesis and to open new avenues for prevention and treatment of F. nucleatum-associated systemic diseases. Design The research included every article published up to July 2022 featuring the keywords 'Systemic diseases' OR 'Atherosclerotic cardiovascular diseases' OR 'Atherosclerosis' OR 'Adverse pregnancy outcomes' OR 'Inflammatory bowel disease' OR 'Ulcerative colitis' OR 'Crohn’s disease' OR 'Cancers' OR 'Oral squamous cell carcinomas' OR 'Gastrointestinal cancers' OR 'Colorectal cancer' OR 'Breast cancer' OR 'Genitourinary cancers' OR 'Alzheimer’s disease ' OR 'Rheumatoid arthritis' OR 'Respiratory diseases' AND 'Fusobacterium nucleatum' OR 'Periodontal pathogen' OR 'Oral microbiota' OR 'Porphyromonas gingivalis' and was conducted in the major medical databases. Results F. nucleatum can induce immune response and inflammation in the body through direct or indirect pathways, and thus affect the occurrence and development of systemic diseases. Only by continuing to investigate the pathogenic lifestyles of F. nucleatum will we discover the divergent pathways that may be leveraged for diagnostic, preventive and therapeutic purposes.
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Affiliation(s)
- Zixin Fan
- Department of Periodontics, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Shanghai road 1, Nanjing, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Pengzhou Tang
- Department of Periodontics, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Shanghai road 1, Nanjing, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Cheng Li
- Department of Periodontics, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Shanghai road 1, Nanjing, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Qi Yang
- Department of Periodontics, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Shanghai road 1, Nanjing, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yan Xu
- Department of Periodontics, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Shanghai road 1, Nanjing, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Chuan Su
- State KeyLaboratory of Reproductive Medicine, Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Center for Global Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Lu Li
- Department of Periodontics, Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, Shanghai road 1, Nanjing, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
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Hodel F, Xu ZM, Thorball CW, de La Harpe R, Letang-Mathieu P, Brenner N, Butt J, Bender N, Waterboer T, Marques-Vidal PM, Vollenweider P, Vaucher J, Fellay J. Associations of genetic and infectious risk factors with coronary heart disease. eLife 2023; 12:79742. [PMID: 36785929 PMCID: PMC9928420 DOI: 10.7554/elife.79742] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 01/22/2023] [Indexed: 02/15/2023] Open
Abstract
Coronary heart disease (CHD) is one of the most pressing health problems of our time and a major cause of preventable death. CHD results from complex interactions between genetic and environmental factors. Using multiplex serological testing for persistent or frequently recurring infections and genome-wide analysis in a prospective population study, we delineate the respective and combined influences of genetic variation, infections, and low-grade inflammation on the risk of incident CHD. Study participants are enrolled in the CoLaus|PsyCoLaus study, a longitudinal, population-based cohort with baseline assessments from 2003 through 2008 and follow-up visits every 5 years. We analyzed a subgroup of 3459 individuals with available genome-wide genotyping data and immunoglobulin G levels for 22 persistent or frequently recurring pathogens. All reported CHD events were evaluated by a panel of specialists. We identified independent associations with incident CHD using univariable and multivariable stepwise Cox proportional hazards regression analyses. Of the 3459 study participants, 210 (6.07%) had at least one CHD event during the 12 years of follow-up. Multivariable stepwise Cox regression analysis, adjusted for known cardiovascular risk factors, socioeconomic status, and statin intake, revealed that high polygenic risk (hazard ratio [HR] 1.31, 95% CI 1.10-1.56, p=2.64 × 10-3) and infection with Fusobacterium nucleatum (HR 1.63, 95% CI 1.08-2.45, p=1.99 × 10-2) were independently associated with incident CHD. In a prospective, population-based cohort, high polygenic risk and infection with F. nucleatum have a small, yet independent impact on CHD risk.
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Affiliation(s)
- Flavia Hodel
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de LausanneLausanneSwitzerland,Swiss Institute of BioinformaticsLausanneSwitzerland
| | - Zhi Ming Xu
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de LausanneLausanneSwitzerland,Swiss Institute of BioinformaticsLausanneSwitzerland
| | | | - Roxane de La Harpe
- Department of Medicine, Internal medicine, Lausanne University Hospital and University of LausanneLausanneSwitzerland
| | - Prunelle Letang-Mathieu
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de LausanneLausanneSwitzerland,Swiss Institute of BioinformaticsLausanneSwitzerland
| | - Nicole Brenner
- Division of Infections and Cancer Epidemiology, German Cancer Research CenterHeidelbergGermany
| | - Julia Butt
- Division of Infections and Cancer Epidemiology, German Cancer Research CenterHeidelbergGermany
| | - Noemi Bender
- Division of Infections and Cancer Epidemiology, German Cancer Research CenterHeidelbergGermany
| | - Tim Waterboer
- Division of Infections and Cancer Epidemiology, German Cancer Research CenterHeidelbergGermany
| | - Pedro Manuel Marques-Vidal
- Department of Medicine, Internal medicine, Lausanne University Hospital and University of LausanneLausanneSwitzerland
| | - Peter Vollenweider
- Department of Medicine, Internal medicine, Lausanne University Hospital and University of LausanneLausanneSwitzerland
| | - Julien Vaucher
- Precision Medicine Unit, Lausanne University Hospital and University of LausanneLausanneSwitzerland
| | - Jacques Fellay
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de LausanneLausanneSwitzerland,Swiss Institute of BioinformaticsLausanneSwitzerland,Precision Medicine Unit, Lausanne University Hospital and University of LausanneLausanneSwitzerland
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Yang J, Hao T, Liu Y, Huang J, Wu W, Wu J, Sun W. Th17/Treg balance and indoleamine 2,3 dioxygenase activity in periodontitis-associated atherosclerotic patients. J Int Med Res 2022; 50:3000605221080877. [PMID: 35220782 PMCID: PMC8894972 DOI: 10.1177/03000605221080877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Objective This study investigated the peripheral Th17/Treg balance and its potential controlling factor indoleamine 2,3 dioxygenase (IDO) in patients with periodontitis and atherosclerosis (AS), as well as its correlation with Porphyromonas gingivalis infection. Methods In this retrospective study, P. gingivalis-infected atherosclerotic patients (Pg-AS), atherosclerotic patients (AS), P. gingivalis-infected periodontitis patients (Pg), and healthy controls (HCs) were selected after clinical examination, subgingival plaque examination, and plasma anti-P. gingivalis antibody analysis. Treg and Th17 cell percentages, related transcription factors, and functional cytokines in peripheral blood were analysed. Plasma tryptophan (Trp) and kynurenine (Kyn) were measured to determine IDO activity. Results Atherosclerotic patients (Pg-AS and AS groups) had significantly lower IDO activity and higher Th17/Treg ratio than those in the Pg and HC groups. The Th17/Treg ratio was higher and IDO activity was lower in the Pg-AS group compared with the AS group. Transcription factors and cytokines exhibited the same trend as the Th17 and Treg cells. Additionally, IDO activity was negatively correlated with the plasma anti-P. gingivalis antibody titre and the Th17/Treg ratio in the atherosclerotic group. Conclusions P. gingivalis may reduce IDO activity and further promote Th17/Treg imbalance to facilitate AS development. IDO may be a novel molecular marker to predict periodontitis-associated AS.
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Affiliation(s)
- Jie Yang
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Ting Hao
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Yu Liu
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Jin Huang
- Department of Cardiology, Nanjing Chest Hospital, Nanjing Chest Hospital, Nanjing, Jiangsu, China
| | - Wenlei Wu
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Juan Wu
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Weibin Sun
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
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Stokowa-Sołtys K, Wojtkowiak K, Jagiełło K. Fusobacterium nucleatum - Friend or foe? J Inorg Biochem 2021; 224:111586. [PMID: 34425476 DOI: 10.1016/j.jinorgbio.2021.111586] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/13/2021] [Accepted: 08/15/2021] [Indexed: 01/16/2023]
Abstract
Fusobacterium nucleatum (F. nucleatum) is one of the most abundant Gram-negative anaerobic bacteria, part of the gut, and oral commensal flora, generally found in human dental plaque. Its presence could be associated with various human diseases, including, e.g., periodontal, angina, lung and gynecological abscesses. This bacteria can enter the blood circulation as a result of periodontal infection. It was proven that F. nucleatum migrates from its primary site of colonization in the oral cavity to other parts of the body. It could cause numerous diseases, including cancers. On the other hand, it was shown that Fusobacterium produces significant amounts of butyric acid, which is a great source of energy for colonocytes (anti-inflammatory cells). Therefore, it is very interesting to get to know the two faces of F. nucleatum.
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Affiliation(s)
- Kamila Stokowa-Sołtys
- Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland.
| | - Kamil Wojtkowiak
- Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland
| | - Karolina Jagiełło
- Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland
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Bugueno IM, Benkirane-Jessel N, Huck O. Implication of Toll/IL-1 receptor domain containing adapters in Porphyromonas gingivalis-induced inflammation. Innate Immun 2021; 27:324-342. [PMID: 34018827 PMCID: PMC8186158 DOI: 10.1177/17534259211013087] [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] [Indexed: 11/16/2022] Open
Abstract
Periodontitis is induced by periodontal dysbiosis characterized by the predominance of anaerobic species. TLRs constitute the classical pathway for cell activation by infection. Interestingly, the Toll/IL-1 receptor homology domain adapters initiate signaling events, leading to the activation of the expression of the genes involved in the host immune response. The aim of this study was to evaluate the effects of Porphyromonas gingivalis on the expression and protein-protein interactions among five TIR adapters (MAL, MyD88, TRIF, TRAM and SARM) in gingival epithelial cells and endothelial cells. It was observed that P. gingivalis is able to modulate the signaling cascades activated through its recognition by TLR4/2 in gingival epithelial cells and endothelial cells. Indeed, MAL-MyD88 protein-protein interactions associated with TLR4 was the main pathway activated by P. gingivalis infection. When transient siRNA inhibition was performed, cell viability, inflammation, and cell death induced by infection decreased and such deleterious effects were almost absent when MAL or TRAM were targeted. This study emphasizes the role of such TIR adapter proteins in P. gingivalis elicited inflammation and the precise evaluation of TIR adapter protein interactions may pave the way for future therapeutics in both periodontitis and systemic disease with a P. gingivalis involvement, such as atherothrombosis.
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Affiliation(s)
- Isaac M Bugueno
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Nadia Benkirane-Jessel
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Olivier Huck
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France.,Faculté de Chirurgie Dentaire, Université de Strasbourg, France.,Pôle de Médecine et de Chirurgie Bucco-Dentaires, Hôpitaux Universitaires de Strasbourg, France
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10
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Determination of the Role of Fusobacterium Nucleatum in the Pathogenesis in and Out the Mouth. ACTA ACUST UNITED AC 2021; 41:87-99. [PMID: 32573481 DOI: 10.2478/prilozi-2020-0026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
INTRODUCTION One of the most important types of microorganisms in the oral cavity in both healthy and non-healthy individuals is Fusobacterium nucleatum. Although present as a normal resident in the oral cavity, this Gram-negative pathogen is dominant in periodontal disease and it is involved in many invasive infections in the population, acute and chronic inflammatory conditions, as well as many adverse events with a fatal outcome. AIM To determine the role of F. nucleatum in the development of polymicrobial biofilms thus pathogenic changes in and out of the oral media. MATERIAL AND METHOD A systematic review of the literature concerning the determination and role of F. nucleatum through available clinical trials, literature reviews, original research and articles published electronically at Pub Med and Google Scholar. CONCLUSION The presence of Fusobacterium nucleatum is commonly associated with the health status of individuals. These anaerobic bacteria plays a key role in oral pathological conditions and has been detected in many systemic disorders causing complex pathogenethic changes probably due to binding ability to various cells thus several virulence mechanisms. Most common diseases and conditions in the oral cavity associated with F.nucleatum are gingivitis (G), chronic periodontitis (CH), aggressive periodontitis (AgP), endo-periodental infections (E-P), chronic apical periodontitis (PCHA). The bacterium has been identified and detected in many systemic disorders such as coronary heart disease (CVD) pathological pregnancy (P); polycystic ovary syndrome (PCOS), high-risk pregnancy (HRP), colorectal cancer (CRC); pre-eclampsia (PE); rheumatoid arthritis (RA); osteoarthritis (OA).
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11
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Kim JH, Oh JW, Lee Y, Yun JH, Choi SH, Lee DW. Quantification of Bacteria in Mouth-Rinsing Solution for the Diagnosis of Periodontal Disease. J Clin Med 2021; 10:891. [PMID: 33671765 PMCID: PMC7926621 DOI: 10.3390/jcm10040891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/15/2021] [Accepted: 02/18/2021] [Indexed: 11/25/2022] Open
Abstract
This study aimed to evaluate the feasibility of diagnosing periodontitis via the identification of 18 bacterial species in mouth-rinse samples. Patients (n = 110) who underwent dental examinations in the Department of Periodontology at the Veterans Health Service Medical Center between 2018 and 2019 were included. They were divided into healthy and periodontitis groups. The overall number of bacteria, and those of 18 specific bacteria, were determined via real-time polymerase chain reaction in 92 mouth-rinse samples. Differences between groups were evaluated through logistic regression after adjusting for sex, age, and smoking history. There was a significant difference in the prevalence (healthy vs. periodontitis group) of Aggregatibacter actinomycetemcomitans (2.9% vs. 13.5%), Treponema denticola (42.9% vs. 69.2%), and Prevotella nigrescens (80% vs. 2.7%). Levels of Treponema denticola, Prevotella nigrescens, and Streptococcus mitis were significantly associated with severe periodontitis. We demonstrated the feasibility of detecting periopathogenic bacteria in mouth-rinse samples obtained from patients with periodontitis. As we did not comprehensively assess all periopathogenic bacteria, further studies are required to assess the potential of oral-rinsing solutions to indicate oral infection risk and the need to improve oral hygiene, and to serve as a complementary method for periodontal disease diagnosis.
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Affiliation(s)
- Jeong-Hwa Kim
- Department of Periodontology, Dental Hospital, Veterans Health Service Medical Center, Seoul 05368, Korea; (J.-H.K.); (J.-W.O.)
| | - Jae-Woon Oh
- Department of Periodontology, Dental Hospital, Veterans Health Service Medical Center, Seoul 05368, Korea; (J.-H.K.); (J.-W.O.)
| | - Young Lee
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul 05368, Korea;
| | - Jeong-Ho Yun
- Department of Periodontology, College of Dentistry and Institute of Oral Bioscience, Jeonbuk National University, Jeonju 54896, Korea;
| | - Seong-Ho Choi
- Department of Periodontology, College of Dentistry and Research Institute for Periodontal Regeneration, Yonsei University, Seoul 03722, Korea;
| | - Dong-Woon Lee
- Department of Periodontology, Dental Hospital, Veterans Health Service Medical Center, Seoul 05368, Korea; (J.-H.K.); (J.-W.O.)
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12
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Vajpeyee A, Chauhan PS, Pandey S, Tiwari S, Yadav LB, Shroti AK, Vajpeyee M. Metagenomics Analysis of Thrombus Samples Retrieved from Mechanical Thrombectomy. Neurointervention 2021; 16:39-45. [PMID: 33530675 PMCID: PMC7946554 DOI: 10.5469/neuroint.2020.00353] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 01/04/2021] [Indexed: 01/08/2023] Open
Abstract
Purpose The purpose of this study was to assess the microbiota in middle cerebral artery thrombi retrieved in mechanical thrombectomy arising out of symptomatic carotid plaque within 6 hours of acute ischemic stroke. Thrombi were subjected to next-generation sequencing for a bacterial signature to determine their role in atherosclerosis. Materials and Methods We included 4 human middle cerebral artery thrombus samples (all patients were male). The median age for the patients was 51±13.6 years. Patients enrolled in the study from Pacific Medical University and Hospital underwent mechanical thrombectomy in the stroke window period. All patients underwent brain magnetic resonance angiography (MRA) and circle of Willis and neck vessel MRA along with the standard stroke workup to establish stroke etiology. Only patients with symptomatic carotid stenosis and tandem lesions with ipsilateral middle cerebral artery occlusion were included in the study. Thrombus samples were collected, stored at –80 degrees, and subjected to metagenomics analysis. Results Of the 4 patients undergoing thrombectomy for diagnosis with ischemic stroke, all thrombi recovered for bacterial DNA in qPCR were positive. More than 27 bacteria were present in the 4 thrombus samples. The majority of bacteria were Lactobacillus, Stenotrophomonas, Pseudomonas, Staphylococcus, and Finegoldia. Conclusion Genesis of symptomatic atherosclerotic carotid plaque leading to thromboembolism could be either due to direct mechanisms like acidification and local inflammation of plaque milieu with lactobacillus, biofilm dispersion leading to inflammation like with pseudomonas fluorescence, or enterococci or indirect mechanisms like Toll 2 like signaling by gut microbiota.
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Affiliation(s)
- Atulabh Vajpeyee
- Department of Neurology, Pacific Medical College & Hospital, Pacific Medical University, Udaipur, India
| | | | - Swapnil Pandey
- CSIR National Botanical Research Institute, Lucknow, India
| | - Shivam Tiwari
- Department of Neurology, Pacific Medical College & Hospital, Pacific Medical University, Udaipur, India
| | - Lokendra Bahadur Yadav
- Department of Neurology, Pacific Medical College & Hospital, Pacific Medical University, Udaipur, India
| | - Akhilesh Kumar Shroti
- Department of Neurology, Pacific Medical College & Hospital, Pacific Medical University, Udaipur, India
| | - Manisha Vajpeyee
- Department of Neurology, Pacific Medical College & Hospital, Pacific Medical University, Udaipur, India
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Zardawi F, Gul S, Abdulkareem A, Sha A, Yates J. Association Between Periodontal Disease and Atherosclerotic Cardiovascular Diseases: Revisited. Front Cardiovasc Med 2021; 7:625579. [PMID: 33521070 PMCID: PMC7843501 DOI: 10.3389/fcvm.2020.625579] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 12/17/2020] [Indexed: 01/15/2023] Open
Abstract
Atherosclerotic cardiovascular disease (ACVD) is an inflammatory disease of the coronary arteries associated with atheroma formation, which can cause disability and often death. Periodontitis is ranked as the sixth most prevalent disease affecting humans affecting 740 million people worldwide. In the last few decades, researchers have focused on the effect of periodontal disease (PD) on cardiovascular disease. The aim of this review was to investigate the association between these two diseases. PD is a potential risk factor that may initiate the development, maturation, and instability of atheroma in the arteries. Two mechanisms were proposed to explain such association, either periodontal pathogens directly invade bloodstream or indirectly by increasing systemic level of inflammatory mediators. Interestingly, it has been suggested that improvement in the condition of one disease positively impact the condition of the other one. Highlighting the association between these two diseases, the importance of early diagnosis and treatment of PD and its impact on cardiovascular status may be of great value in reducing the complications associated with ACVDs. Further in vitro and in vivo studies with longer follow up are necessary to confirm the causal relationship between PD and ACVDs.
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Affiliation(s)
- Faraedon Zardawi
- Periodontics Department, College of Dentistry, University of Sulaimani, Sulaymaniyah, Iraq
| | - Sarhang Gul
- Periodontics Department, College of Dentistry, University of Sulaimani, Sulaymaniyah, Iraq
| | - Ali Abdulkareem
- Department of Periodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Aram Sha
- Periodontics Department, College of Dentistry, University of Sulaimani, Sulaymaniyah, Iraq
| | - Julian Yates
- Division of Dentistry, School of Medical Sciences, University of Manchester, Manchester, United Kingdom
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Porphyromonas gingivalis, a Long-Range Pathogen: Systemic Impact and Therapeutic Implications. Microorganisms 2020; 8:microorganisms8060869. [PMID: 32526864 PMCID: PMC7357039 DOI: 10.3390/microorganisms8060869] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 12/12/2022] Open
Abstract
Periodontitis is an inflammatory disease associated with a dysbiosis of the oral flora characterized by a chronic sustained inflammation leading to destruction of tooth-supporting tissues. Over the last decade, an association between periodontitis and systemic disorders such as cardiovascular diseases, rheumatoid arthritis and obesity has been demonstrated. The role of periodontal pathogens, notably Porphyromonas gingivalis (P. gingivalis), in the onset or exacerbation of systemic diseases has been proposed. P. gingivalis expresses several virulence factors that promote its survival, spreading, and sustaining systemic inflammation. Recently, the impact of periodontitis on gut dysbiosis has also been suggested as a potential mechanism underlying the systemic influence of periodontitis. New therapeutic strategies for periodontitis and other dysbiotic conditions, including the use of beneficial microbes to restore healthy microbial flora, may pave the way to improved therapeutic outcomes and more thorough patient management.
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Brun A, Rangé H, Prouvost B, Mazighi M, Kapila Y, Bouchard P, Michel JB. Innovative application of nested PCR for detection of Porphyromonas gingivalis in human highly calcified atherothrombotic plaques. J Oral Microbiol 2020; 12:1742523. [PMID: 32363006 PMCID: PMC7178846 DOI: 10.1080/20002297.2020.1742523] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 02/21/2020] [Accepted: 02/26/2020] [Indexed: 12/25/2022] Open
Abstract
Atherothrombosis, leading to stroke and myocardial infarction, is responsible for most of the deaths in the world. An increased risk of atherothrombotic vascular events has been reported in patients with periodontitis. Periodontitis is a chronic multifactorial inflammatory disease, which involves a dysbiotic microbiota, and leads to a progressive destruction of the tooth-supporting apparatus. Transcient periodontal pathogen blood translocation, mainly bacteremia, has been associated with the severity of gingival inflammation. The identification of periodontal bacteria within atherothrombotic plaques is challenging and unpredictable. This review aims to summarize existing molecular technics for identifying periodontal microbiota in human atherothrombotic samples. A secondary objective is to describe a protocol for the identification of Porphyromonas gingivalis from highly calcified, atherothrombotic human samples that is based on our experience in translational cardiovascular research. Compared to direct real-time PCR, our protocol based on nested PCR has increased the detection of Porphyromonas gingivalis by 22.2% with good specificity.
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Affiliation(s)
- Adrian Brun
- Laboratory for Vascular Translational Science, Inserm UMR_S1148, Paris, France
- Department of Periodontology, Faculty of Dentistry, Université de Paris, Montrouge, France
- Department of Periodontology, Service of Oral Medicine, AP-HP, Mondor Hospital, Créteil, France
| | - Hélène Rangé
- Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, UR2496, France
- Department of Periodontology, Faculty of Odontology, Université de Paris, Paris, France
- Department of Periodontology, Service of Odontology, APHP, Rothschild Hospital, Paris, France
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA
| | - Bastien Prouvost
- Department of Periodontology, Service of Odontology, APHP, Rothschild Hospital, Paris, France
| | - Mikael Mazighi
- Laboratory for Vascular Translational Science, Inserm UMR_S1148, Paris, France
- Department of Neurology, APHP, Lariboisiere Hospital, Université de Paris, Paris, France
| | - Yvonne Kapila
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA
| | - Philippe Bouchard
- Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, UR2496, France
- Department of Periodontology, Faculty of Odontology, Université de Paris, Paris, France
- Department of Periodontology, Service of Odontology, APHP, Rothschild Hospital, Paris, France
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Porphyromonas gingivalis triggers the shedding of inflammatory endothelial microvesicles that act as autocrine effectors of endothelial dysfunction. Sci Rep 2020; 10:1778. [PMID: 32019950 PMCID: PMC7000667 DOI: 10.1038/s41598-020-58374-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 01/13/2020] [Indexed: 12/15/2022] Open
Abstract
A link between periodontitis and atherothrombosis has been highlighted. The aim of this study was to determine the influence of Porphyromonas gingivalis on endothelial microvesicles (EMVPg) shedding and their contribution to endothelial inflammation. Endothelial cells (EC) were infected with P. gingivalis (MOI = 100) for 24 h. EMVPg were isolated and their concentration was evaluated by prothrombinase assay. EMVPg were significantly increased in comparison with EMVCtrl shedded by unstimulated cells. While EMVCtrl from untreated EC had no effect, whereas, the proportion of apoptotic EC was increased by 30 nM EMVPg and viability was decreased down to 25%, a value elicited by P. gingivalis alone. Moreover, high concentration of EMVPg (30 nM) induced a pro-inflammatory and pro-oxidative cell response including up-regulation of TNF-α, IL-6 and IL-8 as well as an altered expression of iNOS and eNOS at both mRNA and protein level. An increase of VCAM-1 and ICAM-1 mRNA expression (4.5 folds and 3 folds respectively (p < 0.05 vs untreated) was also observed after EMVPg (30 nM) stimulation whereas P. gingivalis infection was less effective, suggesting a specific triggering by EMVPg. Kinasome analysis demonstrated the specific effect induced by EMVPg on main pro-inflammatory pathways including JNK/AKT and STAT. EMVPg are effective pro-inflammatory effectors that may have detrimental effect on vascular homeostasis and should be considered as potential autocrine and paracrine effectors involved in the link between periodontitis and atherothrombosis.
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Detection of periodontal microorganisms in coronary atheromatous plaque specimens of myocardial infarction patients: A systematic review and meta-analysis. Trends Cardiovasc Med 2019; 31:69-82. [PMID: 31983534 DOI: 10.1016/j.tcm.2019.12.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/22/2019] [Accepted: 12/13/2019] [Indexed: 11/21/2022]
Abstract
BACKGROUND Microbial translocation from inflamed periodontal pockets into coronary atheroma via systemic circulation is one of the proposed pathways that links periodontitis and myocardial infarction (MI). The purpose of this systematic review is to determine the reported prevalence of periodontal microorganisms in coronary atheroma and/or aspirated clot samples collected from MI patients with periodontal disease. METHODOLOGY The "Preferred Reporting Items for Systematic Reviews and Meta-Analyses" (PRISMA) guidelines were followed. Six databases were systematically searched using Medical Subject Headings/Index and Entree terms. After a thorough screening, fourteen publications spanning over ten years (2007-2017) were eligible for this systematic review and meta-analysis. RESULTS Out of 14 included studies, 12 reported presence of periodontal bacterial DNA in coronary atherosclerotic plaque specimens. Overall, Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans were the most frequently detected periodontal bacterial species. Meta-analysis revealed that the prevalence of P. gingivalis was significantly higher than A. actinomycetemcomitans in coronary atheromatous plaque samples. Apart from periodontal microbes, DNA from a variety of other microbes e.g. Pseudomonas fluorescens, Streptococcus species, Chlamydia pneumoniae were also recovered from the collected samples. CONCLUSION Consistent detection of periodontal bacterial DNA in coronary atheroma suggests their systemic dissemination from periodontal sites. It should further be investigated whether they are merely bystanders or induce any structural changes within coronary arterial walls.
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Huck O, Han X, Mulhall H, Gumenchuk I, Cai B, Panek J, Iyer R, Amar S. Identification of a Kavain Analog with Efficient Anti-inflammatory Effects. Sci Rep 2019; 9:12940. [PMID: 31506483 PMCID: PMC6737110 DOI: 10.1038/s41598-019-49383-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 08/21/2019] [Indexed: 12/11/2022] Open
Abstract
Kavain, a compound derived from Piper methysticum, has demonstrated anti-inflammatory properties. To optimize its drug properties, identification and development of new kavain-derived compounds was undertaken. A focused library of analogs was synthesized and their effects on Porphyromonas gingivalis (P. gingivalis) elicited inflammation were evaluated in vitro and in vivo. The library contained cyclohexenones (5,5-dimethyl substituted cyclohexenones) substituted with a benzoate derivative at the 3-position of the cyclohexanone. The most promising analog identifed was a methylated derivative of kavain, Kava-205Me (5,5-dimethyl-3-oxocyclohex-1-en-1-yl 4-methylbenzoate.) In an in vitro assay of anti-inflammatory effects, murine macrophages (BMM) and THP-1 cells were infected with P. gingivalis (MOI = 20:1) and a panel of cytokines were measured. Both cell types treated with Kava-205Me (10 to 200 μg/ml) showed significantly and dose-dependently reduced TNF-α secretion induced by P. gingivalis. In BMM, Kava-205Me also reduced secretion of other cytokines involved in the early phase of inflammation, including IL-12, eotaxin, RANTES, IL-10 and interferon-γ (p < 0.05). In vivo, in an acute model of P. gingivalis-induced calvarial destruction, administration of Kava-205Me significantly improved the rate of healing associated with reduced soft tissue inflammation and osteoclast activation. In an infective arthritis murine model induced by injection of collagen-antibody (ArthriomAb) + P. gingivalis, administration of Kava-205Me was able to reduce efficiently paw swelling and joint destruction. These results highlight the strong anti-inflammatory properties of Kava-205Me and strengthen the interest of testing such compounds in the management of P. gingivalis elicited inflammation, especially in the management of periodontitis.
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Affiliation(s)
- Olivier Huck
- Université de Strasbourg, Faculté de Chirurgie-Dentaire, 8 rue Sainte-Elisabeth, 67000, Strasbourg, France
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Xiaxian Han
- Departments of Pharmacology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, NY, USA
| | - Hannah Mulhall
- Departments of Pharmacology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, NY, USA
| | - Iryna Gumenchuk
- Departments of Pharmacology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, NY, USA
| | - Bin Cai
- Department of Chemistry, Boston University, Boston, MA, USA
| | - James Panek
- Department of Chemistry, Boston University, Boston, MA, USA
| | - Radha Iyer
- Departments of Pharmacology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, NY, USA
| | - Salomon Amar
- Departments of Pharmacology, Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, NY, USA.
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Singh SP, Huck O, Abraham NG, Amar S. Kavain Reduces Porphyromonas gingivalis-Induced Adipocyte Inflammation: Role of PGC-1α Signaling. THE JOURNAL OF IMMUNOLOGY 2018; 201:1491-1499. [PMID: 30037847 DOI: 10.4049/jimmunol.1800321] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 06/28/2018] [Indexed: 12/11/2022]
Abstract
A link between obesity and periodontitis has been suggested because of compromised immune response and chronic inflammation in obese patients. In this study, we evaluated the anti-inflammatory properties of Kavain, an extract from Piper methysticum, on Porphyromonas gingivalis-induced inflammation in adipocytes with special focus on peroxisome proliferation-activated receptor γ coactivator α (PGC-1α) and related pathways. The 3T3-L1 mouse preadipocytes and primary adipocytes harvested from mouse adipose tissue were infected with P. gingivalis, and inflammation (TNF-α; adiponectin/adipokines), oxidative stress, and adipogenic marker (FAS, CEBPα, and PPAR-γ) expression were measured. Furthermore, effect of PGC-1α knockdown on Kavain action was evaluated. Results showed that P. gingivalis worsens adipocyte dysfunction through increase of TNF-α, IL-6, and iNOS and decrease of PGC-1α and adiponectin. Interestingly, although Kavain obliterated P. gingivalis-induced proinflammatory effects in wild-type cells, Kavain did not affect PGC-1α-deficient cells, strongly advocating for Kavain effects being mediated by PGC-1α. In vivo adipocytes challenged with i.p. injection of P. gingivalis alone or P. gingivalis and Kavain displayed the same phenotype as in vitro adipocytes. Altogether, our findings established anti-inflammatory and antioxidant effects of Kavain on adipocytes and emphasized protective action against P. gingivalis-induced adipogenesis. The use of compounds such as Kavain offer a portal to potential therapeutic approaches to counter chronic inflammation in obesity-related diseases.
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Affiliation(s)
- Shailendra P Singh
- Department of Pharmacology, New York Medical College, Valhalla, NY 10595
| | - Olivier Huck
- INSERM, UMR 1260, Regenerative Nanomedicine (Fédération de Médicine Translationalle de Strasbourg), 67000 Strasbourg, France; and.,Periodontology, Dental Faculty, University of Strasbourg, 67000 Strasbourg, France
| | - Nader G Abraham
- Department of Pharmacology, New York Medical College, Valhalla, NY 10595
| | - Salomon Amar
- Department of Pharmacology, New York Medical College, Valhalla, NY 10595;
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Bugueno IM, Khelif Y, Seelam N, Morand DN, Tenenbaum H, Davideau JL, Huck O. Porphyromonas gingivalis Differentially Modulates Cell Death Profile in Ox-LDL and TNF-α Pre-Treated Endothelial Cells. PLoS One 2016; 11:e0154590. [PMID: 27124409 PMCID: PMC4849801 DOI: 10.1371/journal.pone.0154590] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/17/2016] [Indexed: 12/24/2022] Open
Abstract
Objective Clinical studies demonstrated a potential link between atherosclerosis and periodontitis. Porphyromonas gingivalis (Pg), one of the main periodontal pathogen, has been associated to atheromatous plaque worsening. However, synergism between infection and other endothelial stressors such as oxidized-LDL or TNF-α especially on endothelial cell (EC) death has not been investigated. This study aims to assess the role of Pg on EC death in an inflammatory context and to determine potential molecular pathways involved. Methods Human umbilical vein ECs (HUVECs) were infected with Pg (MOI 100) or stimulated by its lipopolysaccharide (Pg-LPS) (1μg/ml) for 24 to 48 hours. Cell viability was measured with AlamarBlue test, type of cell death induced was assessed using Annexin V/propidium iodide staining. mRNA expression regarding caspase-1, -3, -9, Bcl-2, Bax-1 and Apaf-1 has been evaluated with RT-qPCR. Caspases enzymatic activity and concentration of APAF-1 protein were evaluated to confirm mRNA results. Results Pg infection and Pg-LPS stimulation induced EC death. A cumulative effect has been observed in Ox-LDL pre-treated ECs infected or stimulated. This effect was not observed in TNF-α pre-treated cells. Pg infection promotes EC necrosis, however, in infected Ox-LDL pre-treated ECs, apoptosis was promoted. This effect was not observed in TNF-α pre-treated cells highlighting specificity of molecular pathways activated. Regarding mRNA expression, Pg increased expression of pro-apoptotic genes including caspases-1,-3,-9, Bax-1 and decreased expression of anti-apoptotic Bcl-2. In Ox-LDL pre-treated ECs, Pg increased significantly the expression of Apaf-1. These results were confirmed at the protein level. Conclusion This study contributes to demonstrate that Pg and its Pg-LPS could exacerbate Ox-LDL and TNF-α induced endothelial injury through increase of EC death. Interestingly, molecular pathways are differentially modulated by the infection in function of the pre-stimulation.
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Affiliation(s)
- Isaac Maximiliano Bugueno
- INSERM 1109 « Osteoarticular & Dental Regenerative Nanomedicine », Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Yacine Khelif
- INSERM 1109 « Osteoarticular & Dental Regenerative Nanomedicine », Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Narendra Seelam
- INSERM 1109 « Osteoarticular & Dental Regenerative Nanomedicine », Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
- Université de Strasbourg, Faculté de Chirurgie-dentaire, Department of Periodontology, Strasbourg, France
| | - David-Nicolas Morand
- INSERM 1109 « Osteoarticular & Dental Regenerative Nanomedicine », Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
- Université de Strasbourg, Faculté de Chirurgie-dentaire, Department of Periodontology, Strasbourg, France
| | - Henri Tenenbaum
- INSERM 1109 « Osteoarticular & Dental Regenerative Nanomedicine », Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
- Université de Strasbourg, Faculté de Chirurgie-dentaire, Department of Periodontology, Strasbourg, France
| | - Jean-Luc Davideau
- INSERM 1109 « Osteoarticular & Dental Regenerative Nanomedicine », Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
- Université de Strasbourg, Faculté de Chirurgie-dentaire, Department of Periodontology, Strasbourg, France
| | - Olivier Huck
- INSERM 1109 « Osteoarticular & Dental Regenerative Nanomedicine », Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
- Université de Strasbourg, Faculté de Chirurgie-dentaire, Department of Periodontology, Strasbourg, France
- * E-mail:
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21
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Reyes L, Herrera D, Kozarov E, Roldán S, Progulske-Fox A. Periodontal bacterial invasion and infection: contribution to atherosclerotic pathology. J Clin Periodontol 2016; 40 Suppl 14:S30-50. [PMID: 23627333 DOI: 10.1111/jcpe.12079] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/2012] [Indexed: 12/16/2022]
Abstract
OBJECTIVE The objective of this review was to perform a systematic evaluation of the literature reporting current scientific evidence for periodontal bacteria as contributors to atherosclerosis. METHODS Literature from epidemiological, clinical and experimental studies concerning periodontal bacteria and atherosclerosis were reviewed. Gathered data were categorized into seven "proofs" of evidence that periodontal bacteria: 1) disseminate from the oral cavity and reach systemic vascular tissues; 2) can be found in the affected tissues; 3) live within the affected site; 4) invade affected cell types in vitro; 5) induce atherosclerosis in animal models of disease; 6) non-invasive mutants of periodontal bacteria cause significantly reduced pathology in vitro and in vivo; and 7) periodontal isolates from human atheromas can cause disease in animal models of infection. RESULTS Substantial evidence for proofs 1 to 6 was found. However, proof 7 has not yet been fulfilled. CONCLUSIONS Despite the lack of evidence that periodontal bacteria obtained from human atheromas can cause atherosclerosis in animal models of infection, attainment of proofs 1 to 6 provides support that periodontal pathogens can contribute to atherosclerosis.
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Affiliation(s)
- Leticia Reyes
- Department of Oral Biology, College of Dentistry and Center for Molecular Microbiology, University of Florida, Gainesville, FL 32610-0424, USA
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22
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Reyes L, Herrera D, Kozarov E, Roldá S, Progulske-Fox A. Periodontal bacterial invasion and infection: contribution to atherosclerotic pathology. J Periodontol 2016; 84:S30-50. [PMID: 23631583 DOI: 10.1902/jop.2013.1340012] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE The objective of this review was to perform a systematic evaluation of the literature reporting current scientific evidence for periodontal bacteria as contributors to atherosclerosis. METHODS Literature from epidemiological, clinical and experimental studies concerning periodontal bacteria and atherosclerosis were reviewed. Gathered data were categorized into seven "proofs" of evidence that periodontal bacteria: 1) disseminate from the oral cavity and reach systemic vascular tissues; 2) can be found in the affected tissues; 3) live within the affected site; 4) invade affected cell types in vitro; 5) induce atherosclerosis in animal models of disease; 6) non-invasive mutants of periodontal bacteria cause significantly reduced pathology in vitro and in vivo; and 7) periodontal isolates from human atheromas can cause disease in animal models of infection. RESULTS Substantial evidence for proofs 1 to 6 was found. However, proof 7 has not yet been fulfilled. CONCLUSIONS Despite the lack of evidence that periodontal bacteria obtained from human atheromas can cause atherosclerosis in animal models of infection, attainment proofs 1 to 6 provides support that periodontal pathogens can contribute to atherosclerosis.
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Affiliation(s)
- Leticia Reyes
- Department of Oral Biology, College of Dentistry and Center for Molecular Microbiology, University of Florida, Gainesville, FL, USA
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23
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Schweitzer MH, Moyer AE, Zheng W. Testing the Hypothesis of Biofilm as a Source for Soft Tissue and Cell-Like Structures Preserved in Dinosaur Bone. PLoS One 2016; 11:e0150238. [PMID: 26926069 PMCID: PMC4771714 DOI: 10.1371/journal.pone.0150238] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 02/11/2016] [Indexed: 12/04/2022] Open
Abstract
Recovery of still-soft tissue structures, including blood vessels and osteocytes, from dinosaur bone after demineralization was reported in 2005 and in subsequent publications. Despite multiple lines of evidence supporting an endogenous source, it was proposed that these structures arose from contamination from biofilm-forming organisms. To test the hypothesis that soft tissue structures result from microbial invasion of the fossil bone, we used two different biofilm-forming microorganisms to inoculate modern bone fragments from which organic components had been removed. We show fundamental morphological, chemical and textural differences between the resultant biofilm structures and those derived from dinosaur bone. The data do not support the hypothesis that biofilm-forming microorganisms are the source of these structures.
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Affiliation(s)
- Mary Higby Schweitzer
- Department of Biological Science, North Carolina State University, Raleigh, North Carolina, United States of America
- North Carolina Museum of Natural Sciences, Raleigh, North Carolina, United States of America
| | - Alison E. Moyer
- Department of Biological Science, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Wenxia Zheng
- Department of Biological Science, North Carolina State University, Raleigh, North Carolina, United States of America
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Zhang B, Sirsjö A, Khalaf H, Bengtsson T. Transcriptional profiling of human smooth muscle cells infected with gingipain and fimbriae mutants of Porphyromonas gingivalis. Sci Rep 2016; 6:21911. [PMID: 26907358 PMCID: PMC4764818 DOI: 10.1038/srep21911] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Accepted: 02/01/2016] [Indexed: 12/30/2022] Open
Abstract
Porphyromonas gingivalis (P. gingivalis) is considered to be involved in the development of atherosclerosis. However, the role of different virulence factors produced by P. gingivalis in this process is still uncertain. The aim of this study was to investigate the transcriptional profiling of human aortic smooth muscle cells (AoSMCs) infected with wild type, gingipain mutants or fimbriae mutants of P. gingivalis. AoSMCs were exposed to wild type (W50 and 381), gingipain mutants (E8 and K1A), or fimbriae mutants (DPG-3 and KRX-178) of P. gingivalis. We observed that wild type P. gingivalis changes the expression of a considerable larger number of genes in AoSMCs compare to gingipain and fimbriae mutants, respectively. The results from pathway analysis revealed that the common differentially expressed genes for AoSMCs infected by 3 different wild type P. gingivalis strains were enriched in pathways of cancer, cytokine-cytokine receptor interaction, regulation of the actin cytoskeleton, focal adhesion, and MAPK signaling pathway. Disease ontology analysis showed that various strains of P. gingivalis were associated with different disease profilings. Our results suggest that gingipains and fimbriae, especially arginine-specific gingipain, produced by P. gingivalis play important roles in the association between periodontitis and other inflammatory diseases, including atherosclerosis.
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Affiliation(s)
- Boxi Zhang
- Department of Clinical Medicine, School of Health Sciences, Örebro University, Örebro, Sweden
| | - Allan Sirsjö
- Department of Clinical Medicine, School of Health Sciences, Örebro University, Örebro, Sweden
| | - Hazem Khalaf
- Department of Clinical Medicine, School of Health Sciences, Örebro University, Örebro, Sweden
| | - Torbjörn Bengtsson
- Department of Clinical Medicine, School of Health Sciences, Örebro University, Örebro, Sweden
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25
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Calandrini CA, Ribeiro AC, Gonnelli AC, Ota-Tsuzuki C, Rangel LP, Saba-Chujfi E, Mayer MPA. Microbial composition of atherosclerotic plaques. Oral Dis 2015; 20:e128-34. [PMID: 24188425 DOI: 10.1111/odi.12205] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 10/08/2013] [Accepted: 10/14/2013] [Indexed: 12/20/2022]
Abstract
OBJECTIVE The association of infections such as periodontitis with atherosclerotic diseases is well documented. In spite of the high diversity of the human oral microbiota, and its close contact with the circulatory system, few oral species were detected in atherosclerotic plaques. Thus, we attempted to evaluate the microbial diversity of atherosclerotic plaques from patients with different periodontal conditions, submitted to endarterectomy by a broad-range microbial method. MATERIALS AND METHODS Patients indicated for aorta endarterectomy due to myocardial infarction were recruited for periodontal clinical examination. The microbial diversity of atherosclerotic plaques (n = 35) was evaluated by sequence analysis of bacterial 16S rRNA libraries. RESULTS Bacterial DNA was detected in 12 endarterectomy specimens (34.3%). Twenty-three bacterial species/phylotypes were identified. Proteobacteria and Firmicutes comprised 78.3% and 21.7% of the identified taxa, respectively. Fifteen (60.9%) phylotypes were reported as yet uncultivable or as yet uncharacterized species. Two uncultured phylotypes were previously detected in the human mouth. The periodontopathogen Aggregatibacter actinomycetemcomitans was detected in seven samples (20%), followed by Pseudomonas species. There was no association between periodontal parameters and detection of A. actinomycetemcomitans or other phylotypes in atherosclerotic plaques. CONCLUSION Our results suggest a role of the oral microbiota in the development of inflammation in atherogenesis, particularly of A. actinomycetemcomitans.
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Affiliation(s)
- C A Calandrini
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil; Department of Periodontology, São Leopoldo Mandic University, Campinas, SP, Brazil
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26
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Xie H. Biogenesis and function of Porphyromonas gingivalis outer membrane vesicles. Future Microbiol 2015; 10:1517-27. [PMID: 26343879 DOI: 10.2217/fmb.15.63] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Porphyromonas gingivalis is one of the keystone pathogens associated with chronic periodontitis. All P. gingivalis strains examined thus far produce outer membrane vesicles. Recent studies have found that vesicles possess some well-known virulence factors of P. gingivalis such as adhesins, toxins and proteolytic enzymes. Carrying most of the characteristic features of their parent P. gingivalis cells, vesicles communicate with host cells and other members of microbial biofilms, resulting in the transmission of virulence factors into these host cells and the formation of pathogenic bacteria-dominated microbial communities. An in-depth understanding of both the nature and role of vesicles in the pathogenicity of P. gingivalis is both important and timely, particularly when speaking of periodontitis and its related systemic effects.
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Affiliation(s)
- H Xie
- Department of Oral Biology, School of Dentistry, Meharry Medical College, 1005 Dr DB Todd, Nashville, Tennessee, TN 37208, USA
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27
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Velsko IM, Chukkapalli SS, Rivera-Kweh MF, Chen H, Zheng D, Bhattacharyya I, Gangula PR, Lucas AR, Kesavalu L. Fusobacterium nucleatum Alters Atherosclerosis Risk Factors and Enhances Inflammatory Markers with an Atheroprotective Immune Response in ApoE(null) Mice. PLoS One 2015; 10:e0129795. [PMID: 26079509 PMCID: PMC4469693 DOI: 10.1371/journal.pone.0129795] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 05/13/2015] [Indexed: 12/20/2022] Open
Abstract
The American Heart Association supports an association between periodontal disease (PD) and atherosclerotic vascular disease (ASVD) but does not as of yet support a causal relationship. Recently, we have shown that major periodontal pathogens Porphyromonas gingivalis and Treponema denticola are causally associated with acceleration of aortic atherosclerosis in ApoEnull hyperlipidemic mice. The aim of this study was to determine if oral infection with another significant periodontal pathogen Fusobacterium nucleatum can accelerate aortic inflammation and atherosclerosis in the aortic artery of ApoEnull mice. ApoEnull mice (n = 23) were orally infected with F. nucleatum ATCC 49256 and euthanized at 12 and 24 weeks. Periodontal disease assessments including F. nucleatum oral colonization, gingival inflammation, immune response, intrabony defects, and alveolar bone resorption were evaluated. Systemic organs were evaluated for infection, aortic sections were examined for atherosclerosis, and inflammatory markers were measured. Chronic oral infection established F. nucleatum colonization in the oral cavity, induced significant humoral IgG (P=0.0001) and IgM (P=0.001) antibody response (12 and 24 weeks), and resulted in significant (P=0.0001) alveolar bone resorption and intrabony defects. F. nucleatum genomic DNA was detected in systemic organs (heart, aorta, liver, kidney, lung) indicating bacteremia. Aortic atherosclerotic plaque area was measured and showed a local inflammatory infiltrate revealed the presence of F4/80+ macrophages and CD3+ T cells. Vascular inflammation was detected by enhanced systemic cytokines (CD30L, IL-4, IL-12), oxidized LDL and serum amyloid A, as well as altered serum lipid profile (cholesterol, triglycerides, chylomicrons, VLDL, LDL, HDL), in infected mice and altered aortic gene expression in infected mice. Despite evidence for systemic infection in several organs and modulation of known atherosclerosis risk factors, aortic atherosclerotic lesions were significantly reduced after F. nucleatum infection suggesting a potential protective function for this member of the oral microbiota.
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Affiliation(s)
- Irina M. Velsko
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| | - Sasanka S. Chukkapalli
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| | - Mercedes. F. Rivera-Kweh
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| | - Hao Chen
- Cardiovascular Medicine and Molecular Genetics & Microbiology, College of Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Donghang Zheng
- Cardiovascular Medicine and Molecular Genetics & Microbiology, College of Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Indraneel Bhattacharyya
- Oral Diagnostic Sciences, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
| | - Pandu R. Gangula
- Department of Oral Biology and Research, CWHR Meharry Medical College, Nashville, Tennessee, United States of America
- Department of Physiology, CWHR Meharry Medical College, Nashville, Tennessee, United States of America
| | - Alexandra R. Lucas
- Cardiovascular Medicine and Molecular Genetics & Microbiology, College of Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Lakshmyya Kesavalu
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, United States of America
- * E-mail:
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Ho MH, Chen CH, Goodwin JS, Wang BY, Xie H. Functional Advantages of Porphyromonas gingivalis Vesicles. PLoS One 2015; 10:e0123448. [PMID: 25897780 PMCID: PMC4405273 DOI: 10.1371/journal.pone.0123448] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 03/03/2015] [Indexed: 01/01/2023] Open
Abstract
Porphyromonas gingivalis is a keystone pathogen of periodontitis. Outer membrane vesicles (OMVs) have been considered as both offense and defense components of this bacterium. Previous studies indicated that like their originating cells, P. gingivalis vesicles, are able to invade oral epithelial cells and gingival fibroblasts, in order to promote aggregation of some specific oral bacteria and to induce host immune responses. In the present study, we investigated the invasive efficiency of P. gingivalis OMVs and compared results with that of the originating cells. Results revealed that 70-90% of human primary oral epithelial cells, gingival fibroblasts, and human umbilical vein endothelial cells carried vesicles from P. gingivalis 33277 after being exposed to the vesicles for 1 h, while 20-50% of the host cells had internalized P. gingivalis cells. We also detected vesicle-associated DNA and RNA and a vesicle-mediated horizontal gene transfer in P. gingivalis strains, which represents a novel mechanism for gene transfer between P. gingivalis strains. Moreover, purified vesicles of P. gingivalis appear to have a negative impact on biofilm formation and the maintenance of Streptococcus gordonii. Our results suggest that vesicles are likely the best offence weapon of P. gingivalis for bacterial survival in the oral cavity and for induction of periodontitis.
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Affiliation(s)
- Meng-Hsuan Ho
- School of Dentistry, Meharry Medical College, Nashville, Tennessee, United States of America
| | - Chin-Ho Chen
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, United States of America
| | - J. Shawn Goodwin
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, Tennessee, United States of America
| | - Bing-Yan Wang
- Department of Periodontics, School of Dentistry, University of Texas, Health Science Center at Houston, Houston, Texas, United States of America
| | - Hua Xie
- School of Dentistry, Meharry Medical College, Nashville, Tennessee, United States of America
- * E-mail:
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29
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Han YW. Fusobacterium nucleatum: a commensal-turned pathogen. Curr Opin Microbiol 2015; 23:141-7. [PMID: 25576662 DOI: 10.1016/j.mib.2014.11.013] [Citation(s) in RCA: 459] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 11/17/2014] [Accepted: 11/18/2014] [Indexed: 12/11/2022]
Abstract
Fusobacterium nucleatum is an anaerobic oral commensal and a periodontal pathogen associated with a wide spectrum of human diseases. This article reviews its implication in adverse pregnancy outcomes (chorioamnionitis, preterm birth, stillbirth, neonatal sepsis, preeclampsia), GI disorders (colorectal cancer, inflammatory bowel disease, appendicitis), cardiovascular disease, rheumatoid arthritis, respiratory tract infections, Lemierre's syndrome and Alzheimer's disease. The virulence mechanisms involved in the diseases are discussed, with emphasis on its colonization, systemic dissemination, and induction of host inflammatory and tumorigenic responses. The FadA adhesin/invasin conserved in F. nucleatum is a key virulence factor and a potential diagnostic marker for F. nucleatum-associated diseases.
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Affiliation(s)
- Yiping W Han
- Division of Periodontics, Section of Oral Diagnostics & Sciences, College of Dental Medicine, Columbia University Medical Center, United States; Department of Microbiology & Immunology, College of Physicians & Surgeons, Columbia University Medical Center, United States; Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, United States.
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Etemadifar R, Konarizadeh S, Zarei A, Farshidi H, Sobhani A. Relationship between periodontal status and C-reactive protein and interleuckin-6 levels among atherosclerotic patients in Bandar Abbas, Iran in 2014. Electron Physician 2015; 7:1010-6. [PMID: 26052413 PMCID: PMC4455295 DOI: 10.14661/2015.1010-1016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 08/26/2014] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Recent studies have reported an association between periodontitis and cardiovascular diseases. Atherosclerosis is also a risk factor for cardiovascular diseases. IL-6 and CRP are important inflammatory markers that are important because they have been shown to be higher when a patient has periodontitis, and they are related to atherosclerosis. The aim of this study was to assess the relationship between periodontitis and CRP and IL-6 in atherosclerotic patients. METHODS The study population in this case control study was atherosclerotic patients in Bandar Abbas, Iran in 2014. The participants included 30 individuals with periodontal diseases and 30 individuals without periodontal diseases, and they were allocated into two groups according to probe depth (PD) and clinical attachment loss (CAL). Inflammatory markers, including CRP and IL-6 were measured in the two groups. The data were analyzed using IBM SPSS 21 statistical software. Descriptive statistics, chi-squared, independent samples t-test, and Mann-Whitney tests were used to analyze the data. RESULTS Individuals with abnormal CRP had significantly higher PD and CAL than individuals with normal CRP (P<0.001). Although PD was not significantly different in individuals with normal and abnormal IL-6 (P=0.124), CAL was significantly higher in individuals with abnormal IL-6 than in the other individuals (P=0.005). CONCLUSION The results of this study showed that CRP and IL-6 are associated with periodontal diseases in atherosclerotic patients. Treatment of periodontal diseases is recommended in atherosclerotic patients.
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Affiliation(s)
- Ruhollah Etemadifar
- Periodontologist, Assistant Professor, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Shokufe Konarizadeh
- Dentistry Student, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Atefeh Zarei
- Dentistry Student, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Hossein Farshidi
- Cardiologist, Associate Professor, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Alireza Sobhani
- Pathologist, Assistant Professor, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
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Gualtero Escobar DF, Porras Gaviria JP, Bernau Gutierrez S, Buitrago Ramírez DM, Castillo Perdomo DM, Lafaurie Villamil GI. Purificación y caracterización de lipopolisacáridos de Eikenella corrodens 23834 y Porphyromonas gingivalis W83. REVISTA COLOMBIANA DE BIOTECNOLOGÍA 2014. [DOI: 10.15446/rev.colomb.biote.v16n1.44224] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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The Inhibitory Effects of Catechins on Biofilm Formation by the Periodontopathogenic Bacterium,Eikenella corrodens. Biosci Biotechnol Biochem 2014; 74:2445-50. [DOI: 10.1271/bbb.100499] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Huck O, Elkaim R, Davideau JL, Tenenbaum H. Porphyromonas gingivalis-impaired innate immune response via NLRP3 proteolysis in endothelial cells. Innate Immun 2014; 21:65-72. [PMID: 24583910 DOI: 10.1177/1753425914523459] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Porphyromonas gingivalis (Pg) is involved in the link between periodontal diseases and atherosclerosis worsening. In periodontal cells, Pg modifies IL-1β expression via the NLRP3 inflammasome pathway activation. Our aim was to investigate NLRP3 inflammasome activation in endothelial cells (ECs) after Pg infection and Pg-LPS stimulation. In both situations, RT-PCR experiments demonstrated an increase of the NLRP3 mRNA level that can be potentiated by pre-treatment of ECs with 5 mM ATP. However, Western blotting analysis revealed that Pg infection induced a proteolysis of NLRP3 protein and a major decrease of the native protein. After ATP pre-treatment and/or Pg-LPS stimulation, this proteolysis was not observed, while NLRP3 protein levels were increased. Proteolysis of the NLRP3 protein was not observed with heat-killed Pg and inhibition of ECs protein synthesis with cycloheximide did not abolish the NLRP3 protein degradation induced by Pg infection in ATP pre-treated cells. Additionally, significant increases of secreted IL-1β were measured after ATP pre-treatment and/or Pg-LPS stimulation, but not after Pg infection. These data showed that Pg and Pg-LPS differentially controlled the NLRP3 inflammasome pathway in ECs, and suggested a novel potential mechanism developed by Pg to reduce IL-1β secretion and to escape host immune response.
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Affiliation(s)
- Olivier Huck
- INSERM UMR 1109, Institut National de la Santé et de la Recherche Médicale, "Osteoarticular and Dental Regenerative Nanomedicine" Team, Strasbourg, France Department of Periodontology, Dental Faculty, University of Strasbourg, Strasbourg, France
| | - René Elkaim
- INSERM UMR 1109, Institut National de la Santé et de la Recherche Médicale, "Osteoarticular and Dental Regenerative Nanomedicine" Team, Strasbourg, France Dental Faculty, University of Strasbourg, Strasbourg, France
| | - Jean-Luc Davideau
- INSERM UMR 1109, Institut National de la Santé et de la Recherche Médicale, "Osteoarticular and Dental Regenerative Nanomedicine" Team, Strasbourg, France Department of Periodontology, Dental Faculty, University of Strasbourg, Strasbourg, France
| | - Henri Tenenbaum
- INSERM UMR 1109, Institut National de la Santé et de la Recherche Médicale, "Osteoarticular and Dental Regenerative Nanomedicine" Team, Strasbourg, France Department of Periodontology, Dental Faculty, University of Strasbourg, Strasbourg, France
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Figuero E, Lindahl C, Marín MJ, Renvert S, Herrera D, Ohlsson O, Wetterling T, Sanz M. Quantification of periodontal pathogens in vascular, blood, and subgingival samples from patients with peripheral arterial disease or abdominal aortic aneurysms. J Periodontol 2014; 85:1182-93. [PMID: 24502612 DOI: 10.1902/jop.2014.130604] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND The aim of this investigation is to quantify periodontal pathogens (Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Campylobacter rectus, and Tannerella forsythia) in vascular, blood, and subgingival samples. As a secondary objective, two molecular bacterial identification methods (nested polymerase chain reaction [PCR] and quantitative PCR [qPCR]) are compared. METHODS Seventy consecutive patients provided a vascular lesion, a blood sample, and 36 subgingival samples. Bacterial DNA was extracted, and qPCR was used to determine the prevalence and amounts of the target pathogens in each sample. Nested PCR was performed only in the samples from vascular lesions. Periodontal examination was performed in 42 patients. Mann-Whitney U or χ(2) tests were used to compare microbiologic results according to periodontal diagnosis. RESULTS All targeted periodontal pathogens (A. actinomycetemcomitans, P. gingivalis, T. forsythia, or C. rectus) were detected in subgingival samples, with a prevalence rate of 72.2%, 47.2%, 74.3%, and 82.9%, respectively. In 7.1% and 11.4% of vascular and blood samples, bacterial DNA was detected. One patient was positive for A. actinomycetemcomitans in the three types of samples. No differences were found in the levels of targeted bacteria when comparing patients with and without periodontitis. Prevalence rates obtained with nested PCR were significantly higher than those obtained with qPCR. CONCLUSIONS The presence of A. actinomycetemcomitans was demonstrated in vascular, blood, and subgingival samples in one of 36 patients. These results, although with a very low frequency, may support the hypothesis of a translocation of periodontal pathogens from subgingival microbiota to the bloodstream and then to atheromatous plaques in carotid or other peripheral arteries. Nested PCR is not an adequate method for identifying DNA of periodontal pathogens in low quantities because of the high number of false-negative results.
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Affiliation(s)
- Elena Figuero
- Oral Research Laboratory, Faculty of Odontology, University Complutense, Madrid, Spain
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35
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Association between chronic apical periodontitis and coronary artery disease. J Endod 2013; 40:164-7. [PMID: 24461397 DOI: 10.1016/j.joen.2013.10.026] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 10/16/2013] [Accepted: 10/16/2013] [Indexed: 11/23/2022]
Abstract
INTRODUCTION Studies have shown that periodontal disease is independently associated with coronary artery disease. However, this same association has not been demonstrated with chronic apical periodontitis. The goal of this study was to establish the relationship between chronic apical periodontitis and coronary artery disease. METHODS This cross-sectional study included 103 patients who underwent coronary angiography at the University Hospital Presidente Dutra, Federal University of Maranhão, São Luís-Maranhão, Brazil. The patients answered a structured questionnaire and underwent physical and laboratory examinations. For each patient, a full-mouth set of periapical radiographs was taken. To compare numerical data, Student's t test for independent samples or the Mann-Whitney U test (nonparametric) was used. The homogeneity of variance was assessed by using Levene's test. For comparison of categorical data, the chi-square test or Fisher's exact test was used. The logistic regression analysis was performed to identify the independent predictors of coronary artery disease. The criterion for statistical significance was set at 5%. Statistical analysis was conducted by using SAS version 6.11 software. RESULTS The study comprised 103 patients (52 men, 51 women; mean age, 61.9 years); 31.1% were literate, and 55.3% were married. In the study sample, the prevalence of chronic apical periodontitis was 41.7% and of coronary artery disease, it was 65%. The patients with chronic apical periodontitis had a 2.79 times higher risk of developing coronary artery disease. CONCLUSIONS In these study patients, chronic apical periodontitis was independently associated with coronary artery disease.
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Cullinan MP, Seymour GJ. Periodontal disease and systemic illness: will the evidence ever be enough? Periodontol 2000 2013; 62:271-86. [DOI: 10.1111/prd.12007] [Citation(s) in RCA: 152] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Eberhard J, Stumpp N, Ismail F, Schnaidt U, Heuer W, Pichlmaier M, Kühn C, Haverich A, Stiesch M. The oral cavity is not a primary source for implantable pacemaker or cardioverter defibrillator infections. J Cardiothorac Surg 2013; 8:73. [PMID: 23575037 PMCID: PMC3639834 DOI: 10.1186/1749-8090-8-73] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 03/26/2013] [Indexed: 11/10/2022] Open
Abstract
Background To test the hypothesis that the oral cavity is a potential source for implantable pacemaker and cardioverter defibrillators infections, the bacterial diversity on explanted rhythm heart management devices was investigated and compared to the oral microbiome. Methods A metagenomic approach was used to analyze the bacterial diversity on the surfaces of non-infected and infected pacemakers. The DNA from surfaces swaps of 24 non-infected and 23 infected pacemaker were isolated and subjected to bacterial-specific DNA amplification, single strand conformation polymorphism- (SSCP) and sequencing analysis. Species-specific primer sets were used to analyze for any correlation between bacterial diversity on pacemakers and in the oral cavity. Results DNA of bacterial origin was detected in 21 cases on infected pacemakers and assigned to the bacterial phylotypes Staphylococcus epidermidis, Propionibacterium acnes, Staphylococcus aureus, Staphylococcus schleiferi and Stapyhlococcus. In 17 cases bacterial DNA was found on pacemakers with no clinical signs of infections. On the basis of the obtained sequence data, the phylotypes Propionibacterium acnes, Staphylococcus and an uncultured bacterium were identified. Propionibacterium acnes and Staphylococcus epidermidis were the only bacteria detected in pacemeaker (n = 25) and oral samples (n = 11). Conclusions The frequency of the coincidental detection of bacteria on infected devices and in the oral cavity is low and the detected bacteria are highly abundant colonizers of non-oral human niches. The transmission of oral bacteria to the lead or device of implantable pacemaker or cardioverter defibrillators is unlikely relevant for the pathogenesis of pacemaker or cardioverter defibrillators infections.
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Affiliation(s)
- Jörg Eberhard
- Department of Prosthetic Dentistry and Biomedical Material Sciences, Hannover Medical School, Carl-Neuberg-Str, 1, Hannover 30625, Germany.
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Eberhard J, Grote K, Luchtefeld M, Heuer W, Schuett H, Divchev D, Scherer R, Schmitz-Streit R, Langfeldt D, Stumpp N, Staufenbiel I, Schieffer B, Stiesch M. Experimental gingivitis induces systemic inflammatory markers in young healthy individuals: a single-subject interventional study. PLoS One 2013; 8:e55265. [PMID: 23408963 PMCID: PMC3567060 DOI: 10.1371/journal.pone.0055265] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 12/20/2012] [Indexed: 01/08/2023] Open
Abstract
Objectives We here investigated whether experimental gingivitis enhances systemic markers of inflammation which are also known as surrogate markers of atherosclerotic plaque development. Background Gingivitis is a low-level oral infection induced by bacterial deposits with a high prevalence within Western populations. A potential link between the more severe oral disease periodontitis and cardiovascular disease has already been shown. Methods 37 non-smoking young volunteers with no inflammatory disease or any cardiovascular risk factors participated in this single-subject interventional study with an intra-individual control. Intentionally experimental oral inflammation was induced by the interruption of oral hygiene for 21 days, followed by a 21-days resolving phase after reinitiation of oral hygiene. Primary outcome measures at baseline, day 21 and 42 were concentrations of hsCRP, IL-6, and MCP-1, as well as adhesion capacity and oxLDL uptake of isolated blood monocytes. Results The partial cessation of oral hygiene procedures was followed by the significant increase of gingival bleeding (34.0%, P<0.0001). This local inflammation was associated with a systemic increase in hsCRP (0.24 mg/L, P = 0.038), IL-6 (12.52 ng/L, P = 0.0002) and MCP-1 (9.10 ng/l, P = 0.124) in peripheral blood samples between baseline and day 21, which decreased at day 42. Monocytes showed an enhanced adherence to endothelial cells and increased foam cell formation after oxLDL uptake (P<0.050) at day 21 of gingivitis. Conclusions Bacterial-induced gingival low-level inflammation induced a systemic increase in inflammatory markers. Dental hygiene almost completely reversed this experimental inflammatory process, suggesting that appropriate dental prophylaxis may also limit systemic markers of inflammation in subjects with natural gingivitis. International Clinical Trials Register Platform of the World Health Organization, registry number: DRKS00003366, URL: http://apps.who.int/trialsearch/Default.aspx
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Affiliation(s)
- Jörg Eberhard
- Department of Prosthetic Dentistry and Biomaterials Science, Hannover Medical School, Hannover, Germany.
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Possible translocation of periodontal pathogens into the lymph nodes draining the oral cavity. J Microbiol 2012; 50:827-36. [PMID: 23124752 DOI: 10.1007/s12275-012-2030-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Accepted: 06/19/2012] [Indexed: 01/03/2023]
Abstract
Numerous publications have reported the presence of periodontopathogenic bacteria in peripheral and central vascular lesions. However, it is unclear how this bacterial translocation occurs. The objective of this study was to investigate whether periodontopathic bacteria are translocated to lymph nodes proximal to the oral cavity. Obtaining lymph node samples is not ethically feasible unless they are excised as part of the surgical management of patients with cancer. This study analyzed formalin-fixed and paraffin-embedded lymph nodes, histologically negative for cancer cell invasion, that were excised from 66 patients with histories of head and neck cancer. Real-time PCR was performed to amplify the 16S ribosomal DNA fragments from Porphyromonas gingivalis, Treponema denticola, Aggregatibacter actinomycetemcomitans, Tannerella forsythia, and Prevotella intermedia. The relationship between bacterial detection and cancer severity, gender, and the use of anti-cancer therapy was examined by Fisher's exact test. P. gingivalis, T. forsythia, and P. intermedia were present in 17%, 8%, and 8% of the samples of submandibular and submental lymph nodes, respectively. There were no significant relationships between bacterial detection and the cancer disease status, patient gender or use of anticancer therapy. According to these data, it appears that the translocation of periodontopathic bacteria may occur via lymphatic drainage, irrespective of the cancer disease status, gender or anticancer therapy.
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Ismail F, Baetzner C, Heuer W, Stumpp N, Eberhard J, Winkel A, Ismail I, Haverich A, Stiesch M. 16S rDNA-based metagenomic analysis of human oral plaque microbiota in patients with atherosclerosis and healthy controls. Indian J Med Microbiol 2012. [DOI: 10.4103/0255-0857.103771] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Lockhart PB, Bolger AF, Papapanou PN, Osinbowale O, Trevisan M, Levison ME, Taubert KA, Newburger JW, Gornik HL, Gewitz MH, Wilson WR, Smith SC, Baddour LM. Periodontal disease and atherosclerotic vascular disease: does the evidence support an independent association?: a scientific statement from the American Heart Association. Circulation 2012; 125:2520-44. [PMID: 22514251 DOI: 10.1161/cir.0b013e31825719f3] [Citation(s) in RCA: 669] [Impact Index Per Article: 55.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A link between oral health and cardiovascular disease has been proposed for more than a century. Recently, concern about possible links between periodontal disease (PD) and atherosclerotic vascular disease (ASVD) has intensified and is driving an active field of investigation into possible association and causality. The 2 disorders share several common risk factors, including cigarette smoking, age, and diabetes mellitus. Patients and providers are increasingly presented with claims that PD treatment strategies offer ASVD protection; these claims are often endorsed by professional and industrial stakeholders. The focus of this review is to assess whether available data support an independent association between ASVD and PD and whether PD treatment might modify ASVD risks or outcomes. It also presents mechanistic details of both PD and ASVD relevant to this topic. The correlation of PD with ASVD outcomes and surrogate markers is discussed, as well as the correlation of response to PD therapy with ASVD event rates. Methodological issues that complicate studies of this association are outlined, with an emphasis on the terms and metrics that would be applicable in future studies. Observational studies to date support an association between PD and ASVD independent of known confounders. They do not, however, support a causative relationship. Although periodontal interventions result in a reduction in systemic inflammation and endothelial dysfunction in short-term studies, there is no evidence that they prevent ASVD or modify its outcomes.
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Huck O, Elkaim R, Davideau J, Tenenbaum H. Porphyromonas gingivalis and its lipopolysaccharide differentially regulate the expression of cathepsin B in endothelial cells. Mol Oral Microbiol 2012; 27:137-48. [DOI: 10.1111/j.2041-1014.2012.00638.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Cysteine proteases from Porphyromonas gingivalis and TLR ligands synergistically induce the synthesis of the cytokine IL-8 in human artery endothelial cells. Arch Oral Biol 2011; 56:1583-91. [DOI: 10.1016/j.archoralbio.2011.06.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Revised: 06/08/2011] [Accepted: 06/29/2011] [Indexed: 11/21/2022]
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Laky M, Assinger A, Esfandeyari A, Bertl K, Haririan H, Volf I. Decreased phosphorylation of platelet vasodilator-stimulated phosphoprotein in periodontitis – a role of periodontal pathogens. Thromb Res 2011; 128:155-60. [DOI: 10.1016/j.thromres.2011.02.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 02/07/2011] [Accepted: 02/21/2011] [Indexed: 01/22/2023]
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Abstract
It is now well accepted that besides the cholesterol associated mechanisms of atherogenesis, inflammation plays a crucial role in all stages of the development of the atherosclerotic lesion. This 'inflammation hypothesis' raises the possibility that through systemic elevations of pro-inflammatory cytokines, periodontal diseases might also contribute to systemic inflammation and, therefore, to atherogenesis. In fact, there is evidence that periodontal diseases are associated with higher systemic levels of high-sensitivity C-reactive protein and a low grade systemic inflammation. This phenomenon has been explained based on mechanisms associated with either the infectious or the inflammatory nature of periodontal diseases. The purposes of this article were to review (1) the evidence suggesting a role for oral bacterial species, particularly periodontal pathogens, in atherogenesis; (2) the potential mechanisms explaining an etiological role for oral bacteria in atherosclerosis; (3) the evidence suggesting that periodontal infections are accompanied by a heightened state of systemic inflammation; (4) the potential sources of systemic inflammatory biomarkers associated with periodontal diseases; and (5) the effects of periodontal therapy on systemic inflammatory biomarkers and cardiovascular risk.
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Affiliation(s)
- R Teles
- Department of Periodontology, The Forsyth Institute, Cambridge, MA 02142, USA.
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Huck O, Saadi-Thiers K, Tenenbaum H, Davideau JL, Romagna C, Laurent Y, Cottin Y, Roul JG. Evaluating periodontal risk for patients at risk of or suffering from atherosclerosis: recent biological hypotheses and therapeutic consequences. Arch Cardiovasc Dis 2011; 104:352-8. [PMID: 21693372 DOI: 10.1016/j.acvd.2011.02.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2010] [Revised: 02/24/2011] [Accepted: 02/25/2011] [Indexed: 01/20/2023]
Abstract
Cardiovascular disease, such as atherosclerosis, is the main cause of mortality in developed countries. Most atherosclerosis risk factors have been identified and are treated, improving patient cardiovascular status and reducing mortality, but some remain unknown. Periodontal disease is generally defined as inflammatory disease initiated by accumulation of dental bacterial plaque, leading to the destruction of tissues that support the teeth. Severe forms have a high prevalence (15% of the population) and are associated with the presence of virulent pathogens such as Porphyromonas gingivalis. Epidemiological studies have shown that severe periodontal disease negatively influences cardiovascular status. The aim of this paper was to present a synthesis of the most recent biological data related to the link between periodontal and cardiovascular disease. The potential biological mechanisms involved in these two inflammatory diseases (bacteriological theory, inflammatory theory, immune theory) were developed. According to the observed positive effects of periodontal treatment on systemic conditions, the benefit of a reinforced collaboration between dentists and cardiologists was discussed, especially for patients at risk for cardiovascular disease.
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Affiliation(s)
- Olivier Huck
- Service de parodontologie, faculté de chirurgie dentaire, Strasbourg, France.
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Genomic recombination through plasmid-encoded recombinase enhances hemolytic activity and adherence to epithelial cells in the periodontopathogenic bacterium Eikenella corrodens. Biosci Biotechnol Biochem 2011; 75:748-51. [PMID: 21512230 DOI: 10.1271/bbb.100866] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The periodontopathogenic bacterium Eikenella corrodens has an N-acetyl-D-galactosamine (GalNAc)-specific lectin, that contributes significantly to the pathogenicity of the bacterium. Recently, we reported that plasmid-mediated genomic recombination enhances the activity of this lectin. In this study, we investigated the effects of genomic recombination on certain virulence factors. Introduction of the recombinase gene resulted in hemolysis and significantly increased bacterial adhesion to epithelial cells. It was suggested that the enhanced adhesion was attributable to increased lectin activity due to genomic recombination, because it was inhibited by the addition of GalNAc. In contrast, invasion of the epithelial cells was remarkably reduced by genomic recombination. Although we assumed that this decrease in invasion resulted from a loss of type-IV pili, the phase variant did not show any decrease in invasion activity. This suggests that type-IV pili do not contribute to the invasive ability of E. corrodens. Our results suggest that genomic recombination enhances the pathogenicity of E. corrodens.
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Figuero E, Sánchez-Beltrán M, Cuesta-Frechoso S, Tejerina JM, del Castro JA, Gutiérrez JM, Herrera D, Sanz M. Detection of periodontal bacteria in atheromatous plaque by nested polymerase chain reaction. J Periodontol 2011; 82:1469-77. [PMID: 21453047 DOI: 10.1902/jop.2011.100719] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND In recent years, increasing evidence regarding the potential association between periodontal diseases and cardiovascular diseases has been identified. The available evidence underlines the importance of detecting periodontal pathogens on atheromatous plaque as the first step in demonstrating the causal relationship between the two conditions. The main aim of this investigation is to detect periodontitis-associated bacteria from carotid artery atheromatous plaque from patients who received an endarterectomy using strict sample procurement and laboratory procedures. METHODS Atheromatous plaque from endarterectomies from carotid arteries were scraped and homogenized, and bacterial DNA was extracted. To obtain a representative concentration of amplicons, two amplifications of the bacterial 16S ribosomal-RNA gene were carried out for each sample with universal eubacteria primers by a polymerase chain reaction (PCR). A nested PCR with specific primers for the target bacteria was performed next. Statistical tests included the χ(2) test. RESULTS Forty-two atheromatous plaque were analyzed. All of them were positive for ≥1 target bacterial species. The bacterial species most commonly found was Porphyromonas gingivalis (78.57%; 33 of 42), followed by Aggregatibacter actinomycetemcomitans (previously Actinobacillus actinomycetemcomitans) (66.67%; 28 of 42), Tannerella forsythia (previously T. forsythensis) (61.90%; 26 of 42), Eikenella corrodens (54.76%; 23 of 42), Fusobacterium nucleatum (50.00%; 21 of 42), and Campylobacter rectus (9.52%; four of 42). The simultaneous presence of various bacterial species within the same specimen was a common observation. CONCLUSION Within the limitations of this study, the presence of DNA from periodontitis-associated bacteria in carotid artery atheromatous plaque retrieved by endarterectomy is confirmed.
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Affiliation(s)
- Elena Figuero
- Section of Graduate Periodontology, Complutense University, Madrid, Spain.
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Castillo DM, Sánchez-Beltrán MC, Castellanos JE, Sanz I, Mayorga-Fayad I, Sanz M, Lafaurie GI. Detection of specific periodontal microorganisms from bacteraemia samples after periodontal therapy using molecular-based diagnostics. J Clin Periodontol 2011; 38:418-27. [PMID: 21392048 DOI: 10.1111/j.1600-051x.2011.01717.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
AIM The aim of this study was to assess the presence of subgingival pathogens in peripheral blood samples from periodontitis patients before and after scaling and root planing (Sc/RP) using nested polymerase chain reaction (nested PCR). MATERIALS AND METHODS Peripheral blood samples were obtained from 42 patients with severe generalized chronic or aggressive periodontitis. In each patient, four samples of peripheral blood were drawn at different times: immediately before the Sc/RP procedure; immediately after Sc/RP; 15 and 30 min. post-Sc/RP. Blood samples were analysed for bacteraemia with anaerobic culturing and nested PCR, using universal bacterial primers that target the 16S-rRNA gene of most bacteria, subsequently re-amplified with specific primers to Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Tannerella forsythia, Eikenella corrodens, Campylobacter rectus and Prevotella intermedia, using a modified phenol-chloroform method for DNA extraction. RESULTS Presence of specific periodontal pathogens in peripheral blood after treatment was detected in 54.8% of the patients, in 47.6% with anaerobic culturing and in 19% with nested PCR. In 16.6%, the periodontal pathogens were detected before Sc/RP. P. gingivalis and A. actynomicetemcomitans were the pathogens most frequently detected in the bloodstream before and after Sc/RP. CONCLUSIONS Nested PCR demonstrated the presence of DNA from periodontal pathogens in blood samples in severe periodontitis patients before, during and after periodontal therapy. The use of these molecular-based techniques may improve the accuracy from the results obtained by haemoculture.
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Affiliation(s)
- Diana Marcela Castillo
- Group UIBO (Oral Basic Research Unit), Faculty of Odontology, University of El Bosque, Bogota, Colombia
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Aquino ARL, Lima KC, Paiva MS, Rôças IN, Siqueira JF. Molecular survey of atheromatous plaques for the presence of DNA from periodontal bacterial pathogens, archaea and fungi. J Periodontal Res 2011; 46:303-9. [PMID: 21261623 DOI: 10.1111/j.1600-0765.2010.01343.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
BACKGROUND AND OBJECTIVE Chronic infections, such as periodontitis, have been associated with the development and progression of atherosclerosis. The mechanisms through which this occurs have yet to be elucidated. This study was carried out to detect periodontopathic bacteria as well as archaea and fungi in atheromatous plaques and search for factors associated with their occurrence in atheromas. MATERIAL AND METHODS A cross-sectional study was carried out including 30 patients diagnosed with atherosclerosis in the carotid, coronary or femoral arteries. Plaques were collected during surgery and analysed using PCR to detect Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Treponema denticola and members of the Synergistetes group. Samples were also surveyed with universal primers for bacterial, archaeal and fungal DNA. Patients responded to a questionnaire to determine factors associated with PCR results. RESULTS All dentate individuals (66.7%) had periodontal disease, 95% of which was severe and 65% extensive. None of the targeted periodontopathic bacteria was found in the atheromas. No sample yielded positive results for fungal and archaeal DNA. Four samples (13%) were positive for the presence of bacterial DNA. Of these, three participants were dentate (two with severely chronic generalized periodontitis and one with severely chronic localized periodontitis). CONCLUSION This study did not confirm previous findings of periodontal pathogens in atheromas, making it impossible to establish factors associated with their presence in plaques. Presence of bacterial DNA in some samples indicates that periodontal or nonoral bacterial species other than the ones targeted in this study may be involved with some cases of atherosclerosis.
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Affiliation(s)
- A R L Aquino
- Departments of Preventive Dentistry, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
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