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Zheng W, Guo Y, Kahar A, Bai J, Zhu Q, Huang X, Li Y, Xu B, Jia X, Wu G, Zhang C, Zhu Y. RUNX1-induced upregulation of PTGS2 enhances cell growth, migration and invasion in colorectal cancer cells. Sci Rep 2024; 14:11670. [PMID: 38778047 PMCID: PMC11111780 DOI: 10.1038/s41598-024-60296-z] [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: 11/09/2022] [Accepted: 04/21/2024] [Indexed: 05/25/2024] Open
Abstract
Colorectal cancer (CRC) arises via the progressive accumulation of dysregulation in key genes including oncogenes and tumor-suppressor genes. Prostaglandin-endoperoxide synthase 2 (PTGS2, also called COX2) acts as an oncogenic driver in CRC. Here, we explored the upstream transcription factors (TFs) responsible for elevating PTGS2 expression in CRC cells. The results showed that PTGS2 silencing repressed cell growth, migration and invasion in HCT116 and SW480 CRC cells. The two fragments (499-981 bp) and (1053-1434 bp) were confirmed as the core TF binding profiles of the PTGS2 promoter. PTGS2 expression positively correlated with RUNX1 level in colon adenocarcinoma (COAD) samples using the TCGA-COAD dataset. Furthermore, RUNX1 acted as a positive regulator of PTGS2 expression by promoting transcriptional activation of the PTGS2 promoter via the 1086-1096 bp binding motif. In conclusion, our study demonstrates that PTGS2 upregulation induced by the TF RUNX1 promotes CRC cell growth, migration and invasion, providing an increased rationale for the use of PTGS2 inhibitors in CRC prevention and treatment.
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Affiliation(s)
- Weiwei Zheng
- Department of Gastrointestinal Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
- Hepatobiliary Gastrointestinal Surgery Department, Red Star Hospital of the 13th Division of Xinjiang Production and Construction Corps, Hami, 839000, The Xinjiang Uygur Autonomous Region, China, China
- The Affiliated People's Hospital of Xinxiang Medical College, Xinxiang, 453000, Henan, China
| | - Yingchang Guo
- Department of Interventional Therapy, The First Affiliated Hospital of Xinxiang Medical College, Xinxiang, 453000, Henan, China
| | - Aihemaiti Kahar
- Hepatobiliary Gastrointestinal Surgery Department, Red Star Hospital of the 13th Division of Xinjiang Production and Construction Corps, Hami, 839000, The Xinjiang Uygur Autonomous Region, China, China
| | - Junwei Bai
- Department of Gastrointestinal Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China
| | - Qinhui Zhu
- Department of General Surgery, Shangcai People's Hospital, Zhumadian, 463800, Henan, China
| | - Xinli Huang
- Department of General Surgery, Suiping People's Hospital, Zhumadian, 463100, Henan, China
| | - Yuan Li
- Department of Anesthesiology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, 450003, Henan, China
| | - Bingyi Xu
- Weihui People's Hospital, Weihui, 453100, Henan, China
| | - Xueshan Jia
- Development Department, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, 450003, Henan, China
| | - Gang Wu
- Department of Gastrointestinal Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China.
| | - Chao Zhang
- Department of Gastrointestinal Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China.
| | - Yuanzeng Zhu
- Department of Gastrointestinal Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450003, Henan, China.
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Khalid S, Kearney M, McReynolds DE. Can social adversity alter the epigenome, trigger oral disease, and affect future generations? Ir J Med Sci 2024:10.1007/s11845-024-03697-3. [PMID: 38740675 DOI: 10.1007/s11845-024-03697-3] [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: 02/23/2024] [Accepted: 04/27/2024] [Indexed: 05/16/2024]
Abstract
The nature versus nurture debate has intrigued scientific circles for decades. Although extensive research has established a clear relationship between genetics and disease development, recent evidence has highlighted the insufficiency of attributing adverse health outcomes to genetic factors alone. In fact, it has been suggested that environmental influences, such as socioeconomic position (SEP), may play a much larger role in the development of disease than previously thought, with extensive research suggesting that low SEP is associated with adverse health conditions. In relation to oral health, a higher prevalence of caries (tooth decay) exists among those of low SEP. Although little is known about the biological mechanisms underlying this relationship, epigenetic modifications resulting from environmental influences have been suggested to play an important role. This review explores the intersection of health inequalities and epigenetics, the role of early-life social adversity and its long-term epigenetic impacts, and how those living within the lower hierarchies of the socioeconomic pyramid are indeed at higher risk of developing diseases, particularly in relation to oral health. A deeper understanding of these mechanisms could lead to the development of targeted interventions for individuals of low SEP to improve oral health or identify those who are at higher risk of developing oral disease.
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Affiliation(s)
- Sakr Khalid
- Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland
| | - Michaela Kearney
- Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland
| | - David E McReynolds
- Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland.
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Wu Y, Liu M, He X, Zhou H, Wei J, Li H, Yuan Q, Zuo Y, Zhao L, Xie Y. A breakthrough in periodontitis treatment: Revealing the pharmacodynamic substances and mechanisms of Kouqiangjie formula. JOURNAL OF ETHNOPHARMACOLOGY 2024; 323:117738. [PMID: 38199336 DOI: 10.1016/j.jep.2024.117738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/29/2023] [Accepted: 01/07/2024] [Indexed: 01/12/2024]
Abstract
ETHNOPHARMACOLOGY RELEVANCE Periodontitis, a complex inflammatory disease, significantly affects people's lives. Traditional Chinese multi-herbal formulas, composed of various herbs, exhibit their therapeutic efficacy holistically. Kouqiangjie Formula (KQJF), comprising 12 herbs including Rhizoma smilacis glabrae, Polygonatum sibiricum Delar. ex Redoute, Taraxacum mongolicum Hand.-Mazz, etc., has been clinically proven to effectively treat periodontitis. However, the potential active substances conferring these effects and their mechanisms of action remain unclear. AIM OF THE STUDY The current investigation endeavours to utilize Ultra Performance Liquid Chromatography Quadrupole Time of Flight Mass Spectrometry (UPLC-Q-TOF-MS), network pharmacology, and in vivo animal experiment confirmation to explore the plausible bioactive compounds and operational mechanisms underpinning KQJF's therapeutic impact on periodontitis. MATERIALS AND METHODS Using the UPLC-Q-TOF-MS technique, we deciphered the chemical constituents of KQJF. Network pharmacology was employed to earmark key bioactive elements, forecast principal targets, and operational pathways which were later substantiated through molecular docking. Experimental validations were carried out in a periodontitis animal model using a range of techniques, including micro-CT, H&E staining, qRT-PCR, and protein blotting procedures, providing comprehensive verification of our initial assumptions. RESULTS Utilizing UPLC-Q-TOF-MS, we characterized 87 individual chemical constituents in KQJF. Network pharmacology revealed that 14 components, including senkyunolide A, glycycoumarin, licoflavonol, glycyrin, senkyunolide I, and senkyunolide H, form the key therapeutic basis of KQJF in targeting periodontitis. Significant targets and pathways were discerned as AKT1, MMP9, JUN, PTGS2, CASP3, TLR4, IL1β, BCL2, PPARG, and pathways such as the TNF signaling pathway, NF-κB signaling pathway, osteoclast differentiation, and Wnt signaling pathway. Molecular docking demonstrated robust binding activity between these crucial targets and the key active ingredients. In vivo experimentation corroborated that, compared with the model group, KQJF significantly ameliorated symptoms and micro-CT imaging parameters of periodontitis in the rat model, down-regulating the expression of AKT1, MMP9, JUN, PTGS2, CASP3, TLR4, and IL1β, while up-regulating the expression of BCL2 and PPARG. CONCLUSION In summary, this study has pioneered a comprehensive exploration of the potential therapeutic constituents, targets, and mechanisms of KQJF for periodontitis treatment, adopting a synergistic strategy of "chemical component analysis-network pharmacology screening-in vivo animal experiment validation". This provides experimental evidence for the clinical application of KQJF and further in-depth research. Additionally, it presents an effective strategy for the research of other Chinese herbal formulations.
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Affiliation(s)
- Yeke Wu
- Department of Stomatology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Min Liu
- Department of Gynaecology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Xiang He
- Department of Stomatology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Hongling Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Jing Wei
- Department of Stomatology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Huijing Li
- Department of Stomatology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Qianghua Yuan
- Department of Pharmacy, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Yuling Zuo
- Department of Stomatology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Lixing Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Yunfei Xie
- Department of Nuclear Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
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Irfan M, Solbiati J, Duran-Pinedo A, Rocha FG, Gibson FC, Frias-Lopez J. A Porphyromonas gingivalis hypothetical protein controlled by the type I-C CRISPR-Cas system is a novel adhesin important in virulence. mSystems 2024; 9:e0123123. [PMID: 38323815 PMCID: PMC10949514 DOI: 10.1128/msystems.01231-23] [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: 11/17/2023] [Accepted: 12/26/2023] [Indexed: 02/08/2024] Open
Abstract
The ability of many human pathogens to infect requires their ability to adhere to the host surfaces as a first step in the process. Porphyromonas gingivalis, a keystone oral pathogen, uses adhesins to adhere to the surface of the gingival epithelium and other members of the oral microbiome. In a previous study, we identified several proteins potentially linked to virulence whose mRNA levels are regulated by CRISPR-Cas type I-C. Among those, PGN_1547 was highly upregulated in the CRISPR-Cas 3 mutant. PGN_1547 is annotated as a hypothetical protein. Employing homology searching, our data support that PGN_1547 resembles an auto-transporter adhesin of P. gingivalis based on containing the DUF2807 domain. To begin to characterize the function of PGN_1547, we found that a deletion mutant displayed a significant decrease in virulence using a Galleria mellonela model. Furthermore, this mutant was significantly impaired in forming biofilms and attaching to the macrophage-like cell THP-1. Luminex revealed that the PGN_1547 mutant elicited a less robust cytokine and chemokine response from THP-1 cells, and TLR2 predominantly sensed that recombinant PGN_1547. Taken together, these findings broaden our understanding of the toolbox of virulence factors possessed by P. gingivalis. Importantly, PGN_1547, a hypothetical protein, has homologs in another member of the order Bacteroidales whose function is unknown, and our results could shed light on the role of this family of proteins as auto-transport adhesins in this phylogenetic group.IMPORTANCEPeriodontal diseases are among humans' most common infections, and besides their effect on the oral cavity, they have been associated with systemic inflammatory conditions. Among members of the oral microbiome implicated in the development of periodontitis, Porphyromonas gingivalis is considered a keystone pathogen. We have identified a new adhesin that acts as a virulence factor, PGN_1547, which contains the DUF2807 domain, which belongs to the putative auto-transporter adhesin, head GIN domain family. Deletion of this gene lowers the virulence of P. gingivalis and impacts the ability of P. gingivalis to form biofilm and attach to host cells. Furthermore, the broad distribution of these receptors in the order Bacteroidales suggests their importance in colonization by this important group of organisms.
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Affiliation(s)
- Muhammad Irfan
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, USA
| | - Jose Solbiati
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, USA
| | - Ana Duran-Pinedo
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, USA
| | - Fernanda Godoy Rocha
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, Florida, USA
| | - Frank C. Gibson
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, USA
| | - Jorge Frias-Lopez
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida, USA
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Ustianowska K, Ustianowski Ł, Bakinowska E, Kiełbowski K, Szostak J, Murawka M, Szostak B, Pawlik A. The Genetic Aspects of Periodontitis Pathogenesis and the Regenerative Properties of Stem Cells. Cells 2024; 13:117. [PMID: 38247810 PMCID: PMC10814055 DOI: 10.3390/cells13020117] [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: 11/27/2023] [Revised: 01/05/2024] [Accepted: 01/07/2024] [Indexed: 01/23/2024] Open
Abstract
Periodontitis (PD) is a prevalent and chronic inflammatory disease with a complex pathogenesis, and it is associated with the presence of specific pathogens, such as Porphyromonas gingivalis. Dysbiosis and dysregulated immune responses ultimately lead to chronic inflammation as well as tooth and alveolar bone loss. Multiple studies have demonstrated that genetic polymorphisms may increase the susceptibility to PD. Furthermore, gene expression is modulated by various epigenetic mechanisms, such as DNA methylation, histone modifications, or the activity of non-coding RNA. These processes can also be induced by PD-associated pathogens. In this review, we try to summarize the genetic processes that are implicated in the pathogenesis of PD. Furthermore, we discuss the use of these mechanisms in diagnosis and therapeutic purposes. Importantly, novel treatment methods that could promote tissue regeneration are greatly needed in PD. In this paper, we also demonstrate current evidence on the potential use of stem cells and extracellular vesicles to stimulate tissue regeneration and suppress inflammation. The understanding of the molecular mechanisms involved in the pathogenesis of PD, as well as the impact of PD-associated bacteria and stem cells in these processes, may enhance future research and ultimately improve long-term treatment outcomes.
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Affiliation(s)
- Klaudia Ustianowska
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (K.U.); (Ł.U.); (E.B.); (K.K.); (M.M.); (B.S.)
| | - Łukasz Ustianowski
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (K.U.); (Ł.U.); (E.B.); (K.K.); (M.M.); (B.S.)
| | - Estera Bakinowska
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (K.U.); (Ł.U.); (E.B.); (K.K.); (M.M.); (B.S.)
| | - Kajetan Kiełbowski
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (K.U.); (Ł.U.); (E.B.); (K.K.); (M.M.); (B.S.)
| | - Joanna Szostak
- Department of Experimental and Clinical Pharmacology, Pomeranian Medical University, 70-111 Szczecin, Poland;
| | - Martyna Murawka
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (K.U.); (Ł.U.); (E.B.); (K.K.); (M.M.); (B.S.)
| | - Bartosz Szostak
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (K.U.); (Ł.U.); (E.B.); (K.K.); (M.M.); (B.S.)
| | - Andrzej Pawlik
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (K.U.); (Ł.U.); (E.B.); (K.K.); (M.M.); (B.S.)
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6
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Laberge S, Akoum D, Wlodarczyk P, Massé JD, Fournier D, Semlali A. The Potential Role of Epigenetic Modifications on Different Facets in the Periodontal Pathogenesis. Genes (Basel) 2023; 14:1202. [PMID: 37372382 DOI: 10.3390/genes14061202] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/24/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
Periodontitis is a chronic inflammatory disease that affects the supporting structures of teeth. In the literature, the association between the pathogenicity of bacteria and environmental factors in this regard have been extensively examined. In the present study, we will shed light on the potential role that epigenetic change can play on different facets of its process, more particularly the modifications concerning the genes involved in inflammation, defense, and immune systems. Since the 1960s, the role of genetic variants in the onset and severity of periodontal disease has been widely demonstrated. These make some people more susceptible to developing it than others. It has been documented that the wide variation in its frequency for various racial and ethnic populations is due primarily to the complex interplay among genetic factors with those affecting the environment and the demography. In molecular biology, epigenetic modifications are defined as any change in the promoter for the CpG islands, in the structure of the histone protein, as well as post-translational regulation by microRNAs (miRNAs), being known to contribute to the alteration in gene expression for complex multifactorial diseases such as periodontitis. The key role of epigenetic modification is to understand the mechanism involved in the gene-environment interaction, and the development of periodontitis is now the subject of more and more studies that attempt to identify which factors are stimulating it, but also affect the reduced response to therapy.
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Affiliation(s)
- Samuel Laberge
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC G1V 0A6, Canada
| | - Daniel Akoum
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC G1V 0A6, Canada
| | - Piotr Wlodarczyk
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC G1V 0A6, Canada
| | - Jean-Daniel Massé
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC G1V 0A6, Canada
| | | | - Abdelhabib Semlali
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC G1V 0A6, Canada
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7
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Omar M, Alexiou M, Rekhi UR, Lehmann K, Bhardwaj A, Delyea C, Elahi S, Febbraio M. DNA methylation changes underlie the long-term association between periodontitis and atherosclerotic cardiovascular disease. Front Cardiovasc Med 2023; 10:1164499. [PMID: 37153468 PMCID: PMC10160482 DOI: 10.3389/fcvm.2023.1164499] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 03/22/2023] [Indexed: 05/09/2023] Open
Abstract
Periodontitis, the leading cause of adult tooth loss, has been identified as an independent risk factor for cardiovascular disease (CVD). Studies suggest that periodontitis, like other CVD risk factors, shows the persistence of increased CVD risk even after mitigation. We hypothesized that periodontitis induces epigenetic changes in hematopoietic stem cells in the bone marrow (BM), and such changes persist after the clinical elimination of the disease and underlie the increased CVD risk. We used a BM transplant approach to simulate the clinical elimination of periodontitis and the persistence of the hypothesized epigenetic reprogramming. Using the low-density lipoprotein receptor knockout (LDLRo ) atherosclerosis mouse model, BM donor mice were fed a high-fat diet to induce atherosclerosis and orally inoculated with Porphyromonas gingivalis (Pg), a keystone periodontal pathogen; the second group was sham-inoculated. Naïve LDLR o mice were irradiated and transplanted with BM from one of the two donor groups. Recipients of BM from Pg-inoculated donors developed significantly more atherosclerosis, accompanied by cytokine/chemokines that suggested BM progenitor cell mobilization and were associated with atherosclerosis and/or PD. Using whole-genome bisulfite sequencing, 375 differentially methylated regions (DMRs) and global hypomethylation in recipients of BM from Pg-inoculated donors were observed. Some DMRs pointed to the involvement of enzymes with major roles in DNA methylation and demethylation. In validation assays, we found a significant increase in the activity of ten-eleven translocase-2 and a decrease in the activity of DNA methyltransferases. Plasma S-adenosylhomocysteine levels were significantly higher, and the S-adenosylmethionine to S-adenosylhomocysteine ratio was decreased, both of which have been associated with CVD. These changes may be related to increased oxidative stress as a result of Pg infection. These data suggest a novel and paradigm-shifting mechanism in the long-term association between periodontitis and atherosclerotic CVD.
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Wojciech Tynior, Joanna Katarzyna Strzelczyk. A Brief Landscape of Epigenetic Mechanisms in Dental Pathologies. CYTOL GENET+ 2022. [DOI: 10.3103/s0095452722050115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Huang J, Zhou Y. Emerging role of epigenetic regulations in periodontitis: a literature review. Am J Transl Res 2022; 14:2162-2183. [PMID: 35559409 PMCID: PMC9091094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 03/25/2022] [Indexed: 06/15/2023]
Abstract
Periodontitis is mainly initiated by periodontal pathogens including Porphyromonas gingivalis, and bad living habits such as smoking aggravate its incidence and severity. The development of periodontitis is closely related to the host's immune responses and the secretion of various cytokine networks. Moreover, periodontitis has an important connection with the development of systemic diseases. Recently, epigenetics which is a fast-developing hot research area has provided new insights into the research of various diseases including periodontitis. Epigenetics is an important supplement to the regulation of gene expression. The study of epigenetics is about causing heritable gene expression or cell phenotype changes through certain mechanisms without changing the DNA sequence. It mainly includes histone modification, DNA methylation, non-coding RNA and the latest research hotspot m6A RNA methylation. In the review, we comprehensively summarize the latest literature on the potential epigenetic regulations in various aspects of periodontitis.
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Affiliation(s)
- Jing Huang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
| | - Yi Zhou
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
- Department of Prosthodontics, Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
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10
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Starzyńska A, Wychowański P, Nowak M, Sobocki BK, Jereczek-Fossa BA, Słupecka-Ziemilska M. Association between Maternal Periodontitis and Development of Systematic Diseases in Offspring. Int J Mol Sci 2022; 23:ijms23052473. [PMID: 35269617 PMCID: PMC8910384 DOI: 10.3390/ijms23052473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/18/2022] [Accepted: 02/20/2022] [Indexed: 12/24/2022] Open
Abstract
Periodontal disease (PD) is one of the most common oral conditions affecting both youths and adults. There are some research works suggesting a high incidence of PD in pregnant women. As an inflammatory disease of bacterial origin, PD may result in the activation of the pathways affecting the course and the pregnancy outcome. The authors, based on the literature review, try to answer the PICO question: Does maternal periodontitis (exposure) influence the incidence of complications rates in pregnancy and the development of systemic diseases in childhood and adult offspring (outcome) in the humans of any race (population) compared to the offspring of mothers with healthy periodontium (comparison)? The authors try to describe the molecular pathways and mechanisms of these interdependencies. There is some evidence that maternal periodontitis may affect the pregnancy course and outcome, resulting in preeclampsia, preterm delivery, vulvovaginitis and low birth weight. It can be suggested that maternal periodontitis may affect offspring epigenome and result in some health consequences in their adult life.
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Affiliation(s)
- Anna Starzyńska
- Department of Oral Surgery, Medical University of Gdańsk, 7 Dębinki Street, 80-211 Gdańsk, Poland;
- Correspondence:
| | - Piotr Wychowański
- Department of Oral Surgery, Medical University of Warsaw, 6 Binieckiego Street, 02-097 Warsaw, Poland;
- Specialized Private Implantology Clinic Wychowanski Stomatologia, 9/33 Rakowiecka Street, 02-517 Warsaw, Poland
| | - Maciej Nowak
- Department of Periodontology and Oral Diseases, Medical University of Warsaw, 6 Binieckiego Street, 02-097 Warsaw, Poland;
| | - Bartosz Kamil Sobocki
- Department of Oral Surgery, Medical University of Gdańsk, 7 Dębinki Street, 80-211 Gdańsk, Poland;
| | - Barbara Alicja Jereczek-Fossa
- Department of Oncology and Hemato-Oncology, University of Milan, 7 Festa del Perdono Street, 20-112 Milan, Italy;
- Division of Radiotherapy, IEO European Institute of Oncology, IRCCS, 435 Ripamonti Street, 20-141 Milan, Italy
| | - Monika Słupecka-Ziemilska
- Department of Human Epigenetics, Mossakowski Medical Research Institute, Polish Academy of Sciences, 5 Pawińskiego Street, 02-106 Warsaw, Poland;
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Yu N, Zhang J, Phillips ST, Offenbacher S, Zhang S. Impaired function of epithelial plakophilin-2 is associated with periodontal disease. J Periodontal Res 2021; 56:1046-1057. [PMID: 34368962 PMCID: PMC8627832 DOI: 10.1111/jre.12918] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 07/13/2021] [Indexed: 01/19/2023]
Abstract
BACKGROUND AND OBJECTIVES Plakophilin-2 (PKP2) is an intracellular desmosomal anchoring protein that has been implicated in a genome-wide association study, in which genetic variants of PKP2 are associated with Porphyromonas gingivalis (P.gingivalis) -dominant periodontal dysbiosis. In this study, we compared the ex vivo PKP2 expression in periodontitis gingival biopsies to periodontitis-free subjects and assessed the in vitro role of PKP2 in gingival epithelial barrier function and the mechanism by which P.gingivalis modulates PKP2 expression. MATERIAL AND METHODS Using reverse transcription quantitative real-time PCR (RT-qPCR), we determined PKP2 mRNA expression levels in gingival biopsies collected from 11 periodontally healthy, 10 experimental gingivitis, and 10 chronic periodontitis subjects. PKP2 protein expression in gingival biopsies was detected by immunohistochemistry. We then challenged primary gingival epithelial cells with bacteria including P.gingivalis, Campylobacter rectus, and various Toll-like receptor agonists. Western blot and immunofluorescence staining were used to detect protein expression. Inhibitors blocking proteases pathways were tested for P.gingivalis-mediated PKP2 protein degradations. We also knocked down endogenous epithelial PKP2 using lentiviral short-hairpin RNA (shRNA) and evaluated cell proliferation, spreading, and barrier function. RESULTS Periodontitis gingival biopsies had approximately twofold less PKP2 mRNA than did healthy controls (p < .05). PKP2 protein was predominantly expressed in gingival epithelium. In primary gingival epithelial cells, P.gingivalis challenge increased PKP2 mRNA levels, while protein expression decreased, which suggests that P.gingivalis has a protein degradation mechanism. Cysteine proteases inhibitors greatly attenuated P.gingivalis-mediated PKP2 protein degradation. Epithelial cells with deficient PKP2 exhibited inhibited cell proliferation and spreading and failed to form monolayers. Finally, P.gingivalis impaired gingival epithelial barrier function. CONCLUSIONS PKP2 appears to be critical in maintaining gingival epithelial barrier function and is susceptible to degradation by cysteine proteases produced by P.gingivalis. Our findings have identified a mechanism by which P.gingivalis impairs epithelial barrier function by promoting PKP2 degradation.
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Affiliation(s)
- Ning Yu
- The Forsyth Institute, Cambridge, Massachusetts, USA
| | - Jinmei Zhang
- Department of Periodontics, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
| | - Sherill T. Phillips
- Center for Oral and Systemic Diseases, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Steven Offenbacher
- Center for Oral and Systemic Diseases, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Periodontology, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Shaoping Zhang
- Department of Periodontics, College of Dentistry, University of Iowa, Iowa City, Iowa, USA
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12
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Yuan Y, Zhu B, Su X, Chen X. Comprehensive Analysis of the Mechanism of Periodontitis-Related mRNA Expression Combined with Upstream Methylation and ceRNA Regulation. Genet Test Mol Biomarkers 2021; 25:707-719. [PMID: 34788142 DOI: 10.1089/gtmb.2021.0090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Background: Periodontitis is a multifactorial disease mainly caused by the formation of plaque biofilm, which can lead to the gradual destruction of tooth-supporting tissues. Current research on the genetics and epigenetics of periodontitis remains relatively limited, and the molecular mechanisms remain largely unknown. Objective: Our aims were to construct competitive endogenous RNA (ceRNA) network and determine DNA methylation patterns of target genes to help elucidate the pathogenesis of periodontitis. Methods: We analyzed the expression profiles of the GSE16134, GSE54710, GSE10334, and GSE59932 datasets from the Gene Expression Omnibus database through the weighted gene coexpression network analysis system and screened mRNAs that are regulated by the level of methylation and are associated with the occurrence of periodontitis. Next, a lncRNA-miRNA-mRNA ceRNA network was constructed using databases including miRanda and TargetScan. Gene ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analyses were conducted for genes in the clinically significant modules. Finally, a protein-protein interaction network was built. Results: We finally identified four mRNAs, four miRNAs, and six lncRNAs as shared differentially expressed genes related to the periodontitis inflammation pathway. IL-6, IFNA17, CXCL12, and TNFRSF13C were identified as key genes whose expression was significantly enriched in the nuclear factor κB and TLR4 pathways. Moreover, the expression of 28 genes were downregulated by hypermethylation and 70 genes were upregulated by hypomethylation. Conclusions: The constructed ceRNA network can improve our understanding of the pathogenesis of periodontitis. Candidate mRNAs from the ceRNA network could serve as new therapeutic targets and prognostic biomarkers in periodontitis.
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Affiliation(s)
- Yifang Yuan
- School of Stomatology, Xinjiang Medical University, Urumqi, China
| | - Bo Zhu
- Department of Gastroenterology and Xinjiang Uygur Autonomous Region People's Hospital, Urumqi, China
| | - Xu Su
- Department of Stomatology, Xinjiang Uygur Autonomous Region People's Hospital, Urumqi, China
| | - Xiaotao Chen
- Department of Stomatology, Xinjiang Uygur Autonomous Region People's Hospital, Urumqi, China
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13
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Hamza SA, Asif S, Khurshid Z, Zafar MS, Bokhari SAH. Emerging Role of Epigenetics in Explaining Relationship of Periodontitis and Cardiovascular Diseases. Diseases 2021; 9:48. [PMID: 34209817 PMCID: PMC8293072 DOI: 10.3390/diseases9030048] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/09/2021] [Accepted: 06/25/2021] [Indexed: 02/07/2023] Open
Abstract
Cardiovascular diseases such as ischemic heart diseases or stroke are among the leading cause of deaths globally, and evidence suggests that these diseases are modulated by a multifactorial and complex interplay of genetic, environmental, and lifestyle factors. Genetic predisposition and chronic exposure to modifiable risk factors have been explored to be involved in the pathophysiology of CVD. Environmental factors contribute to an individual's propensity to develop major cardiovascular risk factors through epigenetic modifications of DNA and histones via miRNA regulation of protein translation that are types of epigenetic mechanisms and participate in disease development. Periodontal disease (PD) is one of the most common oral diseases in humans that is characterized by low-grade inflammation and has been shown to increase the risk of CVDs. Risk factors involved in PD and CVD are determined both genetically and behaviorally. Periodontal diseases such as chronic inflammation promote DNA methylation. Epigenetic modifications involved in the initiation and progression of atherosclerosis play an essential role in plaque development and vulnerability. Epigenetics has opened a new world to understand and manage human diseases, including CVDs and periodontal diseases. Genetic medicine has started a new era of epigenetics to overcome human diseases with various new methodology. Epigenetic profiling may aid in better diagnosis and stratification of patients showing potential predisposed states for disease. A better understanding of the exact regulatory mechanisms of epigenetic pathways driving inflammation is slowly emerging and will aid in developing novel tools for the treatment of disease.
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Affiliation(s)
- Syed Ameer Hamza
- Department of Oral Medicine, University Medical & Dental College, Faisalabad 38000, Pakistan;
| | - Saba Asif
- Department of Periodontology, Sharif Medical & Dental College, Lahore 54000, Pakistan;
| | - Zohaib Khurshid
- Department of Prosthodontics and Dental Implantology, College of Dentistry, King Faisal University, Al-Ahsa 31982, Saudi Arabia;
| | - Muhammad Sohail Zafar
- Department of Restorative Dentistry, College of Dentistry, Taibah University, Madinah Al Munawwrah 41311, Saudi Arabia;
- Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad 44000, Pakistan
| | - Syed Akhtar Hussain Bokhari
- Department of Dental Public Health, College of Dentistry, King Faisal University, Al-Ahsa 31982, Saudi Arabia
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14
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Cho YD, Kim WJ, Ryoo HM, Kim HG, Kim KH, Ku Y, Seol YJ. Current advances of epigenetics in periodontology from ENCODE project: a review and future perspectives. Clin Epigenetics 2021; 13:92. [PMID: 33902683 PMCID: PMC8077755 DOI: 10.1186/s13148-021-01074-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 04/12/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND The Encyclopedia of DNA Elements (ENCODE) project has advanced our knowledge of the functional elements in the genome and epigenome. The aim of this article was to provide the comprehension about current research trends from ENCODE project and establish the link between epigenetics and periodontal diseases based on epigenome studies and seek the future direction. MAIN BODY Global epigenome research projects have emphasized the importance of epigenetic research for understanding human health and disease, and current international consortia show an improved interest in the importance of oral health with systemic health. The epigenetic studies in dental field have been mainly conducted in periodontology and have focused on DNA methylation analysis. Advances in sequencing technology have broadened the target for epigenetic studies from specific genes to genome-wide analyses. CONCLUSIONS In line with global research trends, further extended and advanced epigenetic studies would provide crucial information for the realization of comprehensive dental medicine and expand the scope of ongoing large-scale research projects.
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Affiliation(s)
- Young-Dan Cho
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Yeongeon-dong, Jongno-gu, Seoul, 03080, Korea
| | - Woo-Jin Kim
- Department of Molecular Genetics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
| | - Hyun-Mo Ryoo
- Department of Molecular Genetics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
| | - Hong-Gee Kim
- Biomedical Knowledge Engineering Laboratory, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
| | - Kyoung-Hwa Kim
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Yeongeon-dong, Jongno-gu, Seoul, 03080, Korea
| | - Young Ku
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Yeongeon-dong, Jongno-gu, Seoul, 03080, Korea
| | - Yang-Jo Seol
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Yeongeon-dong, Jongno-gu, Seoul, 03080, Korea.
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15
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Emfietzoglou R, Pachymanolis E, Piperi C. Impact of Epigenetic Alterations in the Development of Oral Diseases. Curr Med Chem 2021; 28:1091-1103. [PMID: 31942842 DOI: 10.2174/0929867327666200114114802] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/12/2019] [Accepted: 11/24/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Epigenetic mechanisms alter gene expression and regulate vital cellular processes that contribute to the onset and progression of major dental diseases. Their reversible character may prove beneficial for therapeutic targeting. This review aims to provide an update on the main epigenetic changes that contribute to the pathogenesis of Oral Squamous Cell Carcinoma (OSCC), pulpitis and periodontitis as well as dental caries and congenital orofacial malformations, in an effort to identify potential therapeutic targets. METHODS We undertook a structured search of bibliographic databases (PubMed and MEDLINE) for peer-reviewed epigenetic research studies focused on oral diseases in the last ten years. A qualitative content analysis was performed in screened papers and a critical discussion of main findings is provided. RESULTS Several epigenetic modifications have been associated with OSCC pathogenesis, including promoter methylation of genes involved in DNA repair, cell cycle regulation and proliferation leading to malignant transformation. Additionally, epigenetic inactivation of tumor suppressor genes, overexpression of histone chaperones and several microRNAs are implicated in OSCC aggressiveness. Changes in the methylation patterns of IFN-γ and trimethylation of histone Η3Κ27 have been detected in pulpitis, along with an aberrant expression of several microRNAs, mainly affecting cytokine production. Chronic periodontal disease has been associated with modifications in the methylation patterns of Toll-Like Receptor 2, Prostaglandin synthase 2, E-cadherin and some inflammatory cytokines, along with the overexpression of miR-146a and miR155. Furthermore, DNA methylation was found to regulate amelogenesis and has been implicated in the pathogenesis of dental caries as well as in several congenital orofacial malformations. CONCLUSION Strong evidence indicates that epigenetic changes participate in the pathogenesis of oral diseases and epigenetic targeting may be considered as a complementary therapeutic scheme to the current management of oral health.
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Affiliation(s)
- Rodopi Emfietzoglou
- School of Dentistry, National and Kapodistrian University of Athens, 2 Thivon Str, Goudi, 115 27 Athens, Greece
| | - Evangelos Pachymanolis
- School of Dentistry, National and Kapodistrian University of Athens, 2 Thivon Str, Goudi, 115 27 Athens, Greece
| | - Christina Piperi
- Department of Biological Chemistry, School of Medicine, National and Kapodistrian University of Athens, 75 Mikras Asias street, 115 27 Athens, Greece
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16
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Feng Z, Meng R, Li Q, Li D, Xu Q. 5-aza-2'-deoxycytidine may regulate the inflammatory response of human odontoblast-like cells through the NF-κB pathway. Int Endod J 2021; 54:1105-1117. [PMID: 33539038 DOI: 10.1111/iej.13488] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 01/29/2021] [Accepted: 02/02/2021] [Indexed: 11/28/2022]
Abstract
AIM To explore the role of DNA methylation in the innate immunity of the dental pulp, this study investigated the effect of 5-aza-2'-deoxycytidine (AZA) on lipoteichoic acid (LTA)-induced cytokine production and related intracellular signalling pathways in human odontoblast-like cells (hOBs). METHODOLOGY hOBs were cultured and differentiated from human dental pulp tissue, and the odontoblastic phenotype of the cells was detected using immunofluorescence, qRT-PCR and Western blotting. hOBs were pretreated with AZA and then stimulated with 10 μg mL-1 LTA. The levels of 42 cytokines related to immunity and inflammation were examined using a cytokine antibody array and verified using qRT-PCR and ELISA. The effect of AZA on the LTA-induced NF-κB and MAPK signalling pathways was explored using Western blotting. The cells were treated with the specific NF-κB inhibitor PDTC and MAPK inhibitors (the ERK inhibitor U0126, the p38 inhibitor SB203580, and the JNK inhibitor SP600125) to further confirm the role of the signalling pathways in LTA-treated hOBs. DNA immunoprecipitation-PCR was used to examine the dynamic methylation status of the gene promoters of myeloid differentiation primary response 88 (MyD88) and tumour necrosis factor receptor-associated factor 6 (TRAF6) in the LTA-induced hOBs. Statistical analyses of the differences between two groups were performed using Student's t-test. One-way analysis of variance (anova) or repeated-measures anova with a post hoc Dunnett's test was used to assess the differences between multiple sets of data. P < 0.05 was considered to be statistically significant. RESULTS The odontoblastic markers were significantly higher in hOBs than those in human dental pulp cells (hDPCs) (P < 0.05). According to the cytokine antibody array results, hOBs pretreated with AZA had significantly increased production of several inflammatory cytokines (P < 0.05), in which the expression levels of IL-6 and IL-8 were the most dramatically increased upon LTA stimulation (P < 0.01). Furthermore, AZA resulted in the significant upregulation of p-IKKα/β, p-IκBα, p-p65, p-p38 and p-ERK in LTA-stimulated hOBs (P < 0.01). Treatment with the NF-κB pathway inhibitor suppressed both IL-6 and IL-8 expression (P < 0.05), whereas inhibitors of the MAPK pathway (SB203580 and SP600125) did not. In LTA-treated hOBs, AZA significantly increased the expression levels of TRAF6 and MyD88 (P < 0.05). AZA induced MyD88 promoter hypomethylation but did not affect TRAF6 methylation. CONCLUSION AZA regulated the LTA-induced inflammatory response through the NF-κB signal pathway in hOBs. This study highlights the important role of DNA methylation in the immunity defence of odontoblasts during the dental pulp immunity response to caries.
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Affiliation(s)
- Z Feng
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - R Meng
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Department of Stomatology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Q Li
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - D Li
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Q Xu
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
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17
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Jurdziński KT, Potempa J, Grabiec AM. Epigenetic regulation of inflammation in periodontitis: cellular mechanisms and therapeutic potential. Clin Epigenetics 2020; 12:186. [PMID: 33256844 PMCID: PMC7706209 DOI: 10.1186/s13148-020-00982-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 11/17/2020] [Indexed: 02/06/2023] Open
Abstract
Epigenetic mechanisms, namely DNA and histone modifications, are critical regulators of immunity and inflammation which have emerged as potential targets for immunomodulating therapies. The prevalence and significant morbidity of periodontitis, in combination with accumulating evidence that genetic, environmental and lifestyle factors cannot fully explain the susceptibility of individuals to disease development, have driven interest in epigenetic regulation as an important factor in periodontitis pathogenesis. Aberrant promoter methylation profiles of genes involved in inflammatory activation, including TLR2, PTGS2, IFNG, IL6, IL8, and TNF, have been observed in the gingival tissue, peripheral blood or buccal mucosa from patients with periodontitis, correlating with changes in expression and disease severity. The expression of enzymes that regulate histone acetylation, in particular histone deacetylases (HDACs), is also dysregulated in periodontitis-affected gingival tissue. Infection of gingival epithelial cells, gingival fibroblasts and periodontal ligament cells with the oral pathogens Porphyromonas gingivalis or Treponema denticola induces alterations in expression and activity of chromatin-modifying enzymes, as well as site-specific and global changes in DNA methylation profiles and in histone acetylation and methylation marks. These epigenetic changes are associated with excessive production of inflammatory cytokines, chemokines, and matrix-degrading enzymes that can be suppressed by small molecule inhibitors of HDACs (HDACi) or DNA methyltransferases. HDACi and inhibitors of bromodomain-containing BET proteins ameliorate inflammation, osteoclastogenesis, and alveolar bone resorption in animal models of periodontitis, suggesting their clinical potential as host modulation therapeutic agents. However, broader application of epigenomic methods will be required to create a comprehensive map of epigenetic changes in periodontitis. The integration of functional studies with global analyses of the epigenetic landscape will provide critical information on the therapeutic and diagnostic potential of epigenetics in periodontal disease.
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Affiliation(s)
- Krzysztof T Jurdziński
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Jan Potempa
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland.,Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA
| | - Aleksander M Grabiec
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland.
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18
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Steigmann L, Maekawa S, Sima C, Travan S, Wang CW, Giannobile WV. Biosensor and Lab-on-a-chip Biomarker-identifying Technologies for Oral and Periodontal Diseases. Front Pharmacol 2020; 11:588480. [PMID: 33343358 PMCID: PMC7748088 DOI: 10.3389/fphar.2020.588480] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 09/23/2020] [Indexed: 12/16/2022] Open
Abstract
Periodontitis is a complex multifactorial disease that can lead to destruction of tooth supporting tissues and subsequent tooth loss. The most recent global burden of disease studies highlight that severe periodontitis is one of the most prevalent chronic inflammatory conditions affecting humans. Periodontitis risk is attributed to genetics, host-microbiome and environmental factors. Empirical diagnostic and prognostic systems have yet to be validated in the field of periodontics. Early diagnosis and intervention prevents periodontitis progression in most patients. Increased susceptibility and suboptimal control of modifiable risk factors can result in poor response to therapy, and relapse. The chronic immune-inflammatory response to microbial biofilms at the tooth or dental implant surface is associated with systemic conditions such as cardiovascular disease, diabetes or gastrointestinal diseases. Oral fluid-based biomarkers have demonstrated easy accessibility and potential as diagnostics for oral and systemic diseases, including the identification of SARS-CoV-2 in saliva. Advances in biotechnology have led to innovations in lab-on-a-chip and biosensors to interface with oral-based biomarker assessment. This review highlights new developments in oral biomarker discovery and their validation for clinical application to advance precision oral medicine through improved diagnosis, prognosis and patient stratification. Their potential to improve clinical outcomes of periodontitis and associated chronic conditions will benefit the dental and overall public health.
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Affiliation(s)
- Larissa Steigmann
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, United States
| | - Shogo Maekawa
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, United States.,Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Corneliu Sima
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, United States
| | - Suncica Travan
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, United States
| | - Chin-Wei Wang
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, United States
| | - William V Giannobile
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, United States.,Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, United States.,Biointerfaces Institute and Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, MI, United States
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19
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Jiang Y, Fu J, Du J, Luo Z, Guo L, Xu J, Liu Y. DNA methylation alterations and their potential influence on macrophage in periodontitis. Oral Dis 2020; 28:249-263. [PMID: 32989880 DOI: 10.1111/odi.13654] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/03/2020] [Accepted: 09/20/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVES To explore how various methylation mechanisms function and affect macrophages in periodontitis, with an aim of getting a comprehensive understanding of pathogenesis of the disease. SUBJECT Alterations in DNA methylation are associated with different periodontitis susceptible factors and disrupt immunity homeostasis. The host's immune response to stimulus plays a vital role in the progression of periodontitis. Macrophages are key immune cells of immune system. They act as critical regulators in maintaining issue homeostasis with their nature of high plasticity. The altered methylation status of genes may cause abnormal expression of proteins in the progress of periodontitis, thus, exert potential influence on macrophages. RESULTS Certain genes are selectively activated or silenced due to the changes in the methylation status, which causes the alteration of the expression level of cytokines/chemokines, signal molecules, extracellular matrix molecules, leads to the change in local microenvironment, affects activation states of immune cells including macrophages, thus influences the host immune response during periodontitis.. This results in differential susceptibility and therapeutic outcome. CONCLUSION DNA methylation alteration may cause aberrant expression level of genes associated with periodontal diseases, thus results in deregulation of macrophages, which supports the prospect of using DNA methylation-related parameter as a new biomarker for the diagnosis and treatment of periodontitis.
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Affiliation(s)
- Yiyang Jiang
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, PR China
| | - Jingfei Fu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, PR China
| | - Juan Du
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, PR China
| | - Zhenhua Luo
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, PR China
| | - Lijia Guo
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, PR China
| | - Junji Xu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, PR China
| | - Yi Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, PR China
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20
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Khouly I, Braun RS, Ordway M, Aouizerat BE, Ghassib I, Larsson L, Asa’ad F. The Role of DNA Methylation and Histone Modification in Periodontal Disease: A Systematic Review. Int J Mol Sci 2020; 21:ijms21176217. [PMID: 32867386 PMCID: PMC7503325 DOI: 10.3390/ijms21176217] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/08/2020] [Accepted: 08/11/2020] [Indexed: 02/07/2023] Open
Abstract
Despite a number of reports in the literature on the role of epigenetic mechanisms in periodontal disease, a thorough assessment of the published studies is warranted to better comprehend the evidence on the relationship between epigenetic changes and periodontal disease and its treatment. Therefore, the aim of this systematic review is to identify and synthesize the evidence for an association between DNA methylation/histone modification and periodontal disease and its treatment in human adults. A systematic search was independently conducted to identify articles meeting the inclusion criteria. DNA methylation and histone modifications associated with periodontal diseases, gene expression, epigenetic changes after periodontal therapy, and the association between epigenetics and clinical parameters were evaluated. Sixteen studies were identified. All included studies examined DNA modifications in relation to periodontitis, and none of the studies examined histone modifications. Substantial variation regarding the reporting of sample sizes and patient characteristics, statistical analyses, and methodology, was found. There was some evidence, albeit inconsistent, for an association between DNA methylation and periodontal disease. IL6, IL6R, IFNG, PTGS2, SOCS1, and TNF were identified as candidate genes that have been assessed for DNA methylation in periodontitis. While several included studies found associations between methylation levels and periodontal disease risk, there is insufficient evidence to support or refute an association between DNA methylation and periodontal disease/therapy in human adults. Further research must be conducted to identify reproducible epigenetic markers and determine the extent to which DNA methylation can be applied as a clinical biomarker.
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Affiliation(s)
- Ismael Khouly
- Department of Oral and Maxillofacial Surgery, College of Dentistry, New York University, New York, NY 10010, USA;
- Correspondence:
| | - Rosalie Salus Braun
- Department of Cariology and Comprehensive Care, College of Dentistry, New York University, New York, NY 10010, USA;
| | - Michelle Ordway
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA;
| | - Bradley Eric Aouizerat
- Department of Oral and Maxillofacial Surgery, College of Dentistry, New York University, New York, NY 10010, USA;
- Bluestone Center for Clinical Research, New York University College of Dentistry, New York, NY 10010, USA
| | - Iya Ghassib
- Department of Periodontics and Oral Medicine, University of Michigan, Ann Arbor, MI 48104, USA;
| | - Lena Larsson
- Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at University of Gothenburg, SE-405 30 Göteborg, Sweden;
| | - Farah Asa’ad
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy at University of Gothenburg, SE-405 30 Göteborg, Sweden;
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21
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Barros SP, Hefni E, Fahimipour F, Kim S, Arora P. Maintaining barrier function of infected gingival epithelial cells by inhibition of DNA methylation. J Periodontol 2020; 91 Suppl 1:S68-S78. [PMID: 32633810 DOI: 10.1002/jper.20-0262] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/14/2020] [Accepted: 06/20/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Infection and inflammation induce epigenetic changes that alter gene expression. In periodontal disease, inflammation, and microbial dysbiosis occur, which can lead to compromised barrier function of the gingival epithelia. Here, we tested the hypotheses that infection of cultured human gingival epithelial (HGEp) cells with Porphyromonas gingivalis disrupts barrier function by inducing epigenetic alterations and that these effects can be blocked by inhibitors of DNA methylation. METHODS Primary HGEp cells were infected with P. gingivalis either in the presence or absence of the non-nucleoside DNA methyltransferase (DNMT) inhibitors RG108, (-) epigallocatechin-3-gallate (EGCG), or curcumin. Barrier function was assessed as transepithelial electrical resistance (TEER). DNA methylation and mRNA abundance were quantified for genes encoding components of three cell-cell junction complexes, CDH1, PKP2, and TJP1. Cell morphology and the abundance of cell-cell junction proteins were evaluated by confocal microscopy. RESULTS Compared to non-infected cells, P. gingivalis infection decreased TEER (P < 0.0001) of HGEp cells; increased methylation of the CDH1, PKP2, and TJP1 (P < 0.0001); and reduced their expression (mRNA abundance) (P < 0.005). Pretreatment with DNMT inhibitors prevented these infection-induced changes in HGEp cells, as well as the altered morphology associated with infection. CONCLUSION Pathogenic infection induced changes in DNA methylation and impaired the barrier function of cultured primary gingival epithelial cells, which suggests a mechanism for systemic consequences of periodontal disease. Inhibition of these events by non-nucleoside DNMT inhibitors represents a potential strategy to treat periodontal disease.
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Affiliation(s)
- Silvana P Barros
- Department of Periodontology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Eman Hefni
- Department of Periodontology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Farahnaz Fahimipour
- Department of Periodontology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Steven Kim
- Department of Periodontology, University of North Carolina at Chapel Hill, Chapel Hill, NC
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Barros SP, Fahimipour F, Tarran R, Kim S, Scarel-Caminaga RM, Justice A, North K. Epigenetic reprogramming in periodontal disease: Dynamic crosstalk with potential impact in oncogenesis. Periodontol 2000 2020; 82:157-172. [PMID: 31850624 DOI: 10.1111/prd.12322] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Periodontitis is a chronic multifactorial inflammatory disease associated with microbial dysbiosis and characterized by progressive destruction of the periodontal tissues. Such chronic infectious inflammatory disease is recognized as a major public health problem worldwide with measurable impact in systemic health. It has become evident that the periodontal disease phenotypes are not only determined by the microbiome effect, but the extent of the tissue response is also driven by the host genome and epigenome patterns responding to various environmental exposures. More recently there is mounting evidence indicating that epigenetic reprogramming in response to combined intrinsic and environmental exposures, might be particularly relevant due its plasticity and potential application towards precision health. The complex epigenetic crosstalk is reflected in the prognosis and progress of periodontal diseases and may also lead to a favorable landscape for cancer development. This review discusses epigenomics modifications focusing on the role of DNA methylation and pathways linking microbial infection and inflammatory pathways, which are also associated with carcinogenesis. There is a more clear vision whereas 'omics' technologies applied to unveil relevant epigenetic factors could play a significant role in the treatment of periodontal disease in a personalized mode, evidencing that public health approach should coexist with precision individualized treatment.
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Affiliation(s)
- Silvana P Barros
- Department of Periodontology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Farahnaz Fahimipour
- Department of Periodontology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Robert Tarran
- Department of Cell Biology & Physiology, Marsico Lung Institute, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Steven Kim
- Department of Periodontology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | | | - Anne Justice
- Biomedical and Translational Informatics, Geisinger Health Weis Center for Research, Danville, Pennsylvania, USA
| | - Kari North
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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Azevedo AM, Carvalho Rocha LP, de Faria Amormino SA, Cavalieri Gomes C, Ornelas Dutra W, Santiago Gomez R, da Costa JE, Rocha Moreira P. DNA methylation profile of genes related to immune response in generalized periodontitis. J Periodontal Res 2020; 55:426-431. [PMID: 31943216 DOI: 10.1111/jre.12726] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 12/05/2019] [Accepted: 12/11/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND OBJECTIVE Epigenetic events, as the DNA methylation, may be related to development of inflammatory diseases. Due to the important role of host's response in the pathogenesis of periodontitis, the purpose of the present study was to investigate the methylation profile of genes related to immune response in gingival tissues from patients with generalized periodontitis (GP) compared to healthy individuals. METHODS Gingival tissues were collected from 20 individuals with GP and 20 healthy individuals. Genomic DNA was extracted and submitted to enzymatic digestions. An initial screening using a panel of genes involved with the response immune was performed in pools containing six samples of each group. Genes that presented different levels of methylation between the groups were selected for individual assays for validation. RESULTS The array results showed an unmethylated profile in the majority of genes evaluated in both groups. MALT1, LTB, and STAT5 genes presented a profile of partial methylation in the control compared with GP group. Validation individual assays using a larger number of samples (n = 20, each group) confirmed the hypomethylation of STAT5 in the GP group compared with control group (P < .001). CONCLUSION Generalized periodontitis is associated with hypomethylation of the STAT5 gene. Further studies are necessary to evaluate the functional impact these findings.
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Affiliation(s)
- Andrea Mara Azevedo
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Luiz Paulo Carvalho Rocha
- Department of Morphology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | - Carolina Cavalieri Gomes
- Department of Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Walderez Ornelas Dutra
- Department of Morphology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ricardo Santiago Gomez
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - José Eustáquio da Costa
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Paula Rocha Moreira
- Department of Morphology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Almiñana-Pastor PJ, Boronat-Catalá M, Micó-Martinez P, Bellot-Arcís C, Lopez-Roldan A, Alpiste-Illueca FM. Epigenetics and periodontics: A systematic review. Med Oral Patol Oral Cir Bucal 2019; 24:e659-e672. [PMID: 31433392 PMCID: PMC6764711 DOI: 10.4317/medoral.23008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 05/27/2019] [Indexed: 02/07/2023] Open
Abstract
Background Despite decades of research, our knowledge of several important aspects of periodontal pathogenesis remains incomplete. Epigenetics allows to perform dynamic analysis of different variations in gene expression, providing this great advantage to the static measurement provided by genetic markers. The aim of this systematic review is to analyze the possible relationships between different epigenetic mechanisms and periodontal diseases, and to assess their potential use as biomarkers of periodontitis. Material and Methods A systematic search was conducted in six databases using MeSH and non-MeSH terms. The review fulfilled PRISMA criteria (Preferred Reporting Items for Systematic reviews and Meta-analysis). Results 36 studies met the inclusion criteria. Due to the heterogeneity of the articles, it was not possible to conduct quantitative analysis. Regarding qualitative synthesis, however, it was found that epigenetic mechanisms may be used as biological markers of periodontal disease, as their dynamism and molecular stability makes them a valuable diagnostic tool. Conclusions Epigenetic markers alter gene expression, producing either silencing or over-expression of molecular transcription that respond to the demands of the cellular surroundings. Gingival crevicular fluid collection is a non-invasive and simple procedure, which makes it an ideal diagnostic medium for detection of both oral and systemic issues. Although further research is needed, this seems to be a promising field of research in the years to come. Key words:Epigenetics, periodontitis, DNA methylation, miRNA, epigenetic biomarker, periodontal diseases.
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25
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Sun Y, Li C, Zhu M, Zhang S, Cao Y, Yang Q, Zhao P, Huang G, Xu A. Enhanced migration and adhesion of peripheral blood neutrophils from SAPHO patients revealed by RNA-Seq. Orphanet J Rare Dis 2019; 14:192. [PMID: 31395074 PMCID: PMC6688242 DOI: 10.1186/s13023-019-1169-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Accepted: 07/26/2019] [Indexed: 02/08/2023] Open
Abstract
Background SAPHO syndrome is a rare disease characterized by inflammatory lesions on skin and bones. Diversified manifestation and inadequate understanding of etiology has limited its diagnosis and treatment. The co-occurrence of other immune-mediated diseases strongly suggests an involvement of autoimmunity in SAPHO syndrome. However, the role of the largest population of circulating immune cells, neutrophils, is still not well explored. In this study, we performed RNA sequencing to profile the mRNA expression of neutrophils purified from peripheral blood of SAPHO patients to identify key genes associated with SAPHO syndrome, trying to find new functional molecules or biomarkers for this rare disease. Results A total of 442 differentially expressed genes were identified (p < 0.05, fold change > 2), in which 294 genes were upregulated and 148 genes were downregulated. Five differentially expressed genes of interest were verified by quantitative Real-Time Polymerase Chain Reaction (qRT-PCR), among which S100A12 was upregulated and positively related to high-sensitivity C-reactive protein (hsCRP), while the downregulated gene MYADM was positively related to osteocalcin. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that differentially expressed genes were enriched in “systemic lupus erythematosus” and “ECM-receptor interaction”. Gene ontology (GO) enrichment showed that differentially expressed genes may participate in biological processes such as “cell migration” and “cell adhesion”. Conclusions In conclusion, this study provides a first insight into transcriptome characteristics of SAPHO syndrome, indicating an over-active neutrophil recruitment in patients and possibly suggesting molecular candidates for further study on diagnosis and pathology of this disease. Electronic supplementary material The online version of this article (10.1186/s13023-019-1169-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yuxiu Sun
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Chen Li
- Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Mengmeng Zhu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Shen Zhang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Yihan Cao
- Department of Radiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Qiao Yang
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Pengfei Zhao
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Guangrui Huang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China.
| | - Anlong Xu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China. .,State Key Laboratory of Biocontrol, Department of Biochemistry, School of Life Sciences, Sun Yat-Sen (Zhongshan) University, Guangzhou, Guangdong, China.
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26
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Abstract
Abstract
Periodontal diseases are the most common diseases in veterinary medicine. The first clinical finding is chewing difficulty, saliva flow and bad oral odor. It further develops into plaque and tartar formation, gingival inflammation and hemorrhagic appearance of the gingiva, periodontal pockets formation, alveolar bone resorption and tooth loss.
In this study an evaluation has been made to determine which degree reflects on the parameters of systemic inflammatory reaction with special attention to IL-6 (Interleukine-6), CRP (C-reactive protein), osteopontin, superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GPx) and Ig (Immunglobulins = Total protein – Albumin) and hematological parameters in dogs with periodontitis.
Two groups have been defined in this study. The first group included 10 healthy and owned dogs as a control group. The second group consisted of 10 owned dogs with moderate-severe periodontitis.
The difference between monocyte (p <0.001) and neutrophil (p <0.05) counts was found to be significant. In addition, the difference between SOD, MDA, glutathione peroxidase, CRP, IL-6 measurements in group 1 and group 2 was significant. (p <0.001). The level of osteopontin in moderate-severe periodontitis cases was found significantly higher than the level measured in the healthy group.
Measured values in the moderate-severe periodontitis cases are higher than the healthy group in terms of CRP, IL-6, and osteopontin levels. Increasing severity of periodontitis was associated with changes in oxidative stress parameters: increased MDA, decreased SOD and glutathione peroxidase levels. These differences provide important information about the evaluation of the cellular responses. There is a need for continued research into the systemic impact of periodontal disease.
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27
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Chuang SM, Lu JH, Lin KL, Long CY, Lee YC, Hsiao HP, Tsai CC, Wu WJ, Yang HJ, Juan YS. Epigenetic regulation of COX‑2 expression by DNA hypomethylation via NF‑κB activation in ketamine‑induced ulcerative cystitis. Int J Mol Med 2019; 44:797-812. [PMID: 31257475 PMCID: PMC6657979 DOI: 10.3892/ijmm.2019.4252] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 06/05/2019] [Indexed: 01/03/2023] Open
Abstract
The present study investigated the methylation of CpG sites in the cyclooxygenase (COX)-2 promoter via nuclear factor (NF)-κB transcriptional regulation and elucidated its effect on the COX-2 transcriptional expression in a ketamine-induced ulcerative cystitis (KIC) animal model. The results of the present study revealed that ketamine treatment induced NF-κB p65 translocation to nuclei and activated COX-2 expression and prostaglandin (PGE)2 production in bladder tissue, whereas COX-2 inhibitor suppressed the inflammatory effect. Moreover, DNA hypomethylation of the COX-2 promoter region located from -1,522 to -829 bp might contribute to transcriptional regulation of COX-2 expression and induce a pro-inflammatory response in KIC. Ketamine treatment increased the binding of NF-κB and permissive histone H3 lysine-4 (H3K4)m3, but caused a decrease in the repressive histone H3K27m3 and H3K36m3 on the COX-2 promoter ranging from -1,522 to -1,331 bp as determined by a chromatin immunoprecipitation assay. Moreover, in the ketamine group, the level of Ten-Eleven-Translocation methylcytosine dioxygenase for demethylation as determined by reverse transcription-quantitative PCR assay was increased in comparison with the control group, but that was not the case for the level of DNA methyltransferases for methylation. The present findings revealed that there was a hypomethylation pattern of the COX-2 promoter in association with the level of COX-2 transcription in KIC.
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Affiliation(s)
- Shu-Mien Chuang
- Translational Research Center, Cancer Center, Department of Medical Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan, R.O.C
| | - Jian-He Lu
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, R.O.C
| | - Kun-Ling Lin
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan, R.O.C
| | - Cheng-Yu Long
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan, R.O.C
| | - Yung-Chin Lee
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, R.O.C
| | - Hui-Pin Hsiao
- Division of Genetics, Endocrinology and Metabolism, Department of Pediatrics, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan, R.O.C
| | - Chia-Chun Tsai
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, R.O.C
| | - Wen-Jeng Wu
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, R.O.C
| | - Hui-Jun Yang
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, R.O.C
| | - Yung-Shun Juan
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, R.O.C
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28
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Emecen-Huja P, Li HF, Ebersole JL, Lambert J, Bush H. Epidemiologic evaluation of Nhanes for environmental Factors and periodontal disease. Sci Rep 2019; 9:8227. [PMID: 31160648 PMCID: PMC6547714 DOI: 10.1038/s41598-019-44445-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 04/15/2019] [Indexed: 01/22/2023] Open
Abstract
Periodontitis is a chronic inflammation that destroys periodontal tissues caused by the accumulation of bacterial biofilms that can be affected by environmental factors. This report describes an association study to evaluate the relationship of environmental factors to the expression of periodontitis using the National Health and Nutrition Examination Study (NHANES) from 1999–2004. A wide range of environmental variables (156) were assessed in patients categorized for periodontitis (n = 8884). Multiple statistical approaches were used to explore this dataset and identify environmental variable patterns that enhanced or lowered the prevalence of periodontitis. Our findings indicate an array of environmental variables were different in periodontitis in smokers, former smokers, or non-smokers, with a subset of specific environmental variables identified in each population subset. Discriminating environmental factors included blood levels of lead, phthalates, selected nutrients, and PCBs. Importantly, these factors were found to be coupled with more classical risk factors (i.e. age, gender, race/ethnicity) to create a model that indicated an increased disease prevalence of 2–4 fold across the sample population. Targeted environmental factors are statistically associated with the prevalence of periodontitis. Existing evidence suggests that these may contribute to altered gene expression and biologic processes that enhance inflammatory tissue destruction.
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Affiliation(s)
- P Emecen-Huja
- Division of Periodontics, College of Dental Medicine, Medical University of South Carolina, Charleston, South Carolina, USA.
| | - H-F Li
- Providence St. Joseph Health of Oregon, Medical Data and Research Center, Portland, OR, USA
| | - J L Ebersole
- School of Dental Medicine, University of Nevada, Las Vegas, Las Vegas, Nevada, USA
| | - J Lambert
- College of Nursing, University of Cincinnati, Cincinnati, OH, USA
| | - H Bush
- Department of Biostatistics, College of Public Health, University of Kentucky, Lexington, KY, USA
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29
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Barros SP, Hefni E, Nepomuceno R, Offenbacher S, North K. Targeting epigenetic mechanisms in periodontal diseases. Periodontol 2000 2019; 78:174-184. [PMID: 30198133 DOI: 10.1111/prd.12231] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Epigenetic factors are heritable genome modifications that potentially impact gene transcription, contributing to disease states. Epigenetic marks play an important role in chronic inflammatory conditions, as observed in periodontal diseases, by allowing microbial persistence or by permitting microbial insult to play a role in the so-called 'hit-and-run' infectious mechanism, leading to lasting pathogen interference with the host genome. Epigenetics also affects the health sciences by providing a dynamic mechanistic framework to explain the way in which environmental and behavioral factors interact with the genome to alter disease risk. In this article we review current knowledge of epigenome regulation in light of the multifactorial nature of periodontal diseases. We discuss epigenetic tagging in identified genes, and consider the potential implications of epigenetic changes on host-microbiome dynamics in chronic inflammatory states and in response to environmental stressors. The most recent advances in genomic technologies have placed us in a position to analyze interaction effects (eg, between periodontal disease and type 2 diabetes mellitus), which can be investigated through epigenome-wide association analysis. Finally, because of the individualized traits of epigenetic biomarkers, pharmacoepigenomic perspectives are also considered as potentially novel therapeutic approaches for improving periodontal disease status.
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Affiliation(s)
- Silvana P Barros
- Department of Periodontology, University of North Carolina, Chapel Hil, NC, USA
| | - Eman Hefni
- Department of Periodontology, School of Dentistry, Umm Al Qura University, Makkah, Saudi Arabia
| | - Rafael Nepomuceno
- Department of Periodontology, University of North Carolina, Chapel Hil, NC, USA
| | - Steven Offenbacher
- Department of Periodontology, University of North Carolina, Chapel Hil, NC, USA
| | - Kari North
- Department of Epidemiology and Carolina Center for Genome Sciences, University of North Carolina, Chapel Hill, NC, USA
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30
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31
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Ebersole JL, Lambert J, Bush H, Huja PE, Basu A. Serum Nutrient Levels and Aging Effects on Periodontitis. Nutrients 2018; 10:E1986. [PMID: 30558282 PMCID: PMC6316450 DOI: 10.3390/nu10121986] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 12/06/2018] [Accepted: 12/12/2018] [Indexed: 12/12/2022] Open
Abstract
Periodontal disease damages tissues as a result of dysregulated host responses against the chronic bacterial biofilm insult and approximately 50% of US adults >30 years old exhibit periodontitis. The association of five blood nutrients and periodontitis were evaluated due to our previous findings regarding a potential protective effect for these nutrients in periodontal disease derived from the US population sampled as part of the National Health and Nutrition Examination Survey (1999⁻2004). Data from over 15,000 subjects was analyzed for blood levels of cis-β-carotene, β-cryptoxanthin, folate, vitamin D, and vitamin E, linked with analysis of the presence and severity of periodontitis. Moderate/severe disease patients had lower cis-β-carotene levels across all racial/ethnic groups and these decreased levels in moderate/severe periodontitis were exacerbated with age. β-cryptoxanthin demonstrated lower levels in severe disease patients across the entire age range in all racial/ethnic groups. Folate differences were evident across the various age groups with consistently lower levels in periodontitis patients >30 years and most pronounced in females. Lower levels of vitamin D were consistently noted across the entire age range of patients with a greater difference seen in females with periodontitis. Finally, an analytical approach to identify interactions among these nutrients related to age and periodontitis showed interactions of vitamin D in females, and folate with race in the population. These findings suggest that improving specific nutrient intake leading to elevated blood levels of a combination of these protective factors may provide a novel strategy to affect the significant increase in periodontitis that occurs with aging.
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Affiliation(s)
- Jeffrey L Ebersole
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, 1001 Shadow Lane, B221, MS 7425, Las Vegas, NV 89106, USA.
| | - Joshua Lambert
- College of Nursing, University of Cincinnati; Cincinnati, OH 45221, USA.
| | - Heather Bush
- Department of Biostatistics, College of Public Health, University of Kentucky; Lexington, KY 40536, USA.
| | - Pinar Emecen Huja
- Department of Periodontics, School of Dentistry, Medical University of South Carolina; Charleston, SC 29425, USA.
| | - Arpita Basu
- Department of Kinesiology and Nutrition Sciences, School of Allied Health Sciences, University of Nevada Las Vegas, Las Vegas, NV 89106, USA.
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32
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Shimizu M, Weerawanich W. Sonographic diagnosis in the head and neck region: from an educational lecture presented at the 56th General Assembly and Annual Scientific Congress of the Japanese Society for Oral and Maxillofacial Radiology. Oral Radiol 2018; 35:101-126. [PMID: 30484212 DOI: 10.1007/s11282-018-0353-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 09/28/2018] [Indexed: 01/15/2023]
Abstract
Sonography is a simple, inexpensive, and non-invasive diagnostic modality. Although tissues behind bony structures and deep tissues are not delineated, sonography can depict superficial soft tissues very clearly. In the head and neck region, however, it has not yet been used widely, as the anatomical structures are complicated, and considerable experience is needed both to perform an examination and to make a diagnosis. To perform examinations efficiently, operators must be familiar with the sonographic system in use, and take images at standard planes. To make a correct diagnosis, operators require knowledge of the sonographic anatomy on standard planes, representative sonographic signs and artifacts, and common diseases and their typical sonographic findings. In this paper, we have explained the sonographic anatomy on standard planes, and the sonographic findings of common diseases in the oral and maxillofacial region.
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Affiliation(s)
- Mayumi Shimizu
- Department of Oral and Maxillofacial Radiology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Warangkana Weerawanich
- Department of Oral and Maxillofacial Radiology, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Mahidol University, 6 Yothi Road, Ratchathewi District, Bangkok, 10400, Thailand
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33
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Ateia IM, Sutthiboonyapan P, Kamarajan P, Jin T, Godovikova V, Kapila YL, Fenno JC. Treponema denticola increases MMP-2 expression and activation in the periodontium via reversible DNA and histone modifications. Cell Microbiol 2018; 20. [PMID: 29205773 DOI: 10.1111/cmi.12815] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 11/03/2017] [Accepted: 11/28/2017] [Indexed: 12/21/2022]
Abstract
Host-derived matrix metalloproteinases (MMPs) and bacterial proteases mediate destruction of extracellular matrices and supporting alveolar bone in periodontitis. The Treponema denticola dentilisin protease induces MMP-2 expression and activation in periodontal ligament (PDL) cells, and dentilisin-mediated activation of pro-MMP-2 is required for cellular fibronectin degradation. Here, we report that T. denticola regulates MMP-2 expression through epigenetic modifications in the periodontium. PDL cells were treated with epigenetic enzyme inhibitors before or after T. denticola challenge. Fibronectin fragmentation, MMP-2 expression, and activation were assessed by immunoblot, zymography, and qRT-PCR, respectively. Chromatin modification enzyme expression in T. denticola-challenged PDL cells and periodontal tissues were evaluated using gene arrays. Several classes of epigenetic enzymes showed significant alterations in transcription in diseased tissue and T. denticola-challenged PDL cells. T. denticola-mediated MMP-2 expression and activation were significantly reduced in PDL cells treated with inhibitors of aurora kinases and histone deacetylases. In contrast, DNA methyltransferase inhibitors had little effect, and inhibitors of histone acetyltransferases, methyltransferases, and demethylases exacerbated T. denticola-mediated MMP-2 expression and activation. Chronic epigenetic changes in periodontal tissues mediated by T. denticola or other oral microbes may contribute to the limited success of conventional treatment of chronic periodontitis and may be amenable to therapeutic reversal.
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Affiliation(s)
- Islam M Ateia
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA.,Department of Periodontics and Oral Medicine, University of Mansoura Faculty of Dentistry, Mansoura, Egypt
| | - Pimchanok Sutthiboonyapan
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA.,Department of Periodontology, Chulalongkorn University Faculty of Dentistry, Bangkok, Thailand
| | - Pachiyappan Kamarajan
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA.,Department of Orofacial Sciences, University of California San Francisco School of Dentistry, San Francisco, CA, USA
| | - Taocong Jin
- Office of Research, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Valentina Godovikova
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Yvonne L Kapila
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA.,Department of Orofacial Sciences, University of California San Francisco School of Dentistry, San Francisco, CA, USA
| | - J Christopher Fenno
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor, MI, USA
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Asa'ad F, Bollati V, Pagni G, Castilho RM, Rossi E, Pomingi F, Tarantini L, Consonni D, Giannobile WV, Rasperini G. Evaluation of DNA methylation of inflammatory genes following treatment of chronic periodontitis: A pilot case-control study. J Clin Periodontol 2017; 44:905-914. [DOI: 10.1111/jcpe.12783] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Farah Asa'ad
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
| | - Valentina Bollati
- EPIGET-Epidemiology, Epigenetics and Toxicology Lab; Department of Clinical Sciences and Community Health; University of Milan; Milan Italy
- Epidemiology Unit; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; Milan Italy
| | - Giorgio Pagni
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
| | - Rogerio M. Castilho
- Laboratory of Epithelial Biology; University of Michigan School of Dentistry; Ann Arbor MI USA
- Department of Periodontics and Oral Medicine; School of Dentistry; University of Michigan; Ann Arbor MI USA
| | - Eleonora Rossi
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
| | | | - Letizia Tarantini
- EPIGET-Epidemiology, Epigenetics and Toxicology Lab; Department of Clinical Sciences and Community Health; University of Milan; Milan Italy
| | - Dario Consonni
- Epidemiology Unit; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; Milan Italy
| | - William V. Giannobile
- Department of Periodontics and Oral Medicine; School of Dentistry; University of Michigan; Ann Arbor MI USA
| | - Giulio Rasperini
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
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Ebersole JL, Dawson D, Emecen-Huja P, Nagarajan R, Howard K, Grady ME, Thompson K, Peyyala R, Al-Attar A, Lethbridge K, Kirakodu S, Gonzalez OA. The periodontal war: microbes and immunity. Periodontol 2000 2017; 75:52-115. [DOI: 10.1111/prd.12222] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Ari G, Cherukuri S, Namasivayam A. Epigenetics and Periodontitis: A Contemporary Review. J Clin Diagn Res 2016; 10:ZE07-ZE09. [PMID: 28050521 DOI: 10.7860/jcdr/2016/21025.8864] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 08/10/2016] [Indexed: 11/24/2022]
Abstract
Periodontitis is characterized by infection and inflammation of the tooth supporting structures. Few signs of susceptibility and recurrence after treatment are seen due to the outgrowth of various pathogenic microorganisms. Many studies have been done to understand the genetic basis of periodontal disease. An increased risk for periodontitis has been shown with the variations in genes related to the inflammatory response. Interestingly, some of the genes regulated by epigenetic modifications are modified in response to environmental stimuli. Conditions such as cancer, autoimmune or inflammatory diseases have been dispensed by epigenetic mechanisms. The understanding of these molecular mechanisms and the early detection of susceptibility may guide in future periodontal disease treatment and prevention.
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Affiliation(s)
- Geetha Ari
- Reader, Department of Periodontology, Meenakshi Ammal Dental College and Hospital , Chennai, Tamil Nadu, India
| | - Sandhya Cherukuri
- Postgraduate Student, Meenakshi Ammal Dental College and Hospital , Chennai, Tamil Nadu, India
| | - Ambalavanan Namasivayam
- Professor and Head, Department of Periodontology, Meenakshi Ammal Dental College and Hospital , Chennai, Tamil Nadu, India
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Grdović N, Rajić J, Petrović SM, Dinić S, Uskoković A, Mihailović M, Jovanović JA, Tolić A, Pucar A, Milašin J, Vidaković M. Association of CXCL12 gene promoter methylation with periodontitis in patients with diabetes mellitus type 2. Arch Oral Biol 2016; 72:124-133. [PMID: 27580404 DOI: 10.1016/j.archoralbio.2016.08.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 08/19/2016] [Accepted: 08/21/2016] [Indexed: 12/18/2022]
Abstract
OBJECTIVES CXCL12 is widely expressed, constitutive chemokine involved in tissue repair and regeneration, while the extent of its expression is important in various chronic inflammatory conditions. Involvement of DNA methylation in CXCL12 gene suppression (CXCL12) has been shown in malignancy and some autoimmune diseases. The aim of this study was to investigate whether the alterations in DNA methylation of CXCL12 are also involved in progression of periodontitis in combination with diabetes, as these chronic inflammatory conditions are strongly interrelated. DESIGN Study included 72 subjects divided in three groups: healthy control (C, n=21), periodontitis (P, n=29) and diabetes/periodontitis group (D/P, n=22). DNA extracted from epithelial cells obtained by sterile cotton swabs from buccal mucosa was subjected to methylation specific polymerase chain reaction (MSP) to obtain DNA methylation pattern of CXCL12 promoter. RESULTS CXCL12 promoter was predominantly unmethylated in all groups. However, increase in the frequency of the methylated form and increase in percent of methylation of CXCL12 promoter in periodontitis and diabetes/periodontitis group compared to control group were found, although without statistical significance. However, statistically significant increase in Tm of MSP products in diabetes/periodontitis group was observed. Correlation analysis revealed statistically significant relationship between the extent of DNA methylation of the CXCL12 promoter and periodontal parameters, as well as between DNA methylation of CXCL12 and glycosylated hemoglobin. CONCLUSION Presented results suggest that chronic inflammation contributes to the change of CXCL12 DNA methylation in buccal cells and that DNA methylation profile of CXCL12 promoter plays important role in development and progression of periodontal disease.
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Affiliation(s)
- Nevena Grdović
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Jovana Rajić
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Sanja Matić Petrović
- Department of Periodontology and Oral Medicine, School of Dental Medicine, University of Belgrade, Dr Subotica 8, 11000 Belgrade, Serbia
| | - Svetlana Dinić
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Aleksandra Uskoković
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Mirjana Mihailović
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Jelena Arambašić Jovanović
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Anja Tolić
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia
| | - Ana Pucar
- Department of Periodontology and Oral Medicine, School of Dental Medicine, University of Belgrade, Dr Subotica 8, 11000 Belgrade, Serbia
| | - Jelena Milašin
- Institute of Human Genetics, School of Dental Medicine, University of Belgrade, Dr Subotica 8, 11000 Belgrade, Serbia
| | - Melita Vidaković
- Institute for Biological Research "Siniša Stanković", Department of Molecular Biology, University of Belgrade, Bulevar despota Stefana 142, 11000 Belgrade, Serbia.
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Hui T, Wang C, Chen D, Zheng L, Huang D, Ye L. Epigenetic regulation in dental pulp inflammation. Oral Dis 2016; 23:22-28. [PMID: 26901577 DOI: 10.1111/odi.12464] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 01/26/2016] [Accepted: 02/13/2016] [Indexed: 02/05/2023]
Abstract
Dental caries, trauma, and other possible factors could lead to injury of the dental pulp. Dental infection could result in immune and inflammatory responses mediated by molecular and cellular events and tissue breakdown. The inflammatory response of dental pulp could be regulated by genetic and epigenetic events. Epigenetic modifications play a fundamental role in gene expression. The epigenetic events might play critical roles in the inflammatory process of dental pulp injury. Major epigenetic events include methylation and acetylation of histones and regulatory factors, DNA methylation, and small non-coding RNAs. Infections and other environmental factors have profound effects on epigenetic modifications and trigger diseases. Despite growing evidences of literatures addressing the role of epigenetics in the field of medicine and biology, very little is known about the epigenetic pathways involved in dental pulp inflammation. This review summarized the current knowledge about epigenetic mechanisms during dental pulp inflammation. Progress in studies of epigenetic alterations during inflammatory response would provide opportunities for the development of efficient medications of epigenetic therapy for pulpitis.
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Affiliation(s)
- T Hui
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China.,Department of Biochemistry, Rush University Medical Center, Chicago, IL, USA
| | - C Wang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - D Chen
- Department of Biochemistry, Rush University Medical Center, Chicago, IL, USA
| | - L Zheng
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - D Huang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - L Ye
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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41
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Schulz S, Immel UD, Just L, Schaller HG, Gläser C, Reichert S. Epigenetic characteristics in inflammatory candidate genes in aggressive periodontitis. Hum Immunol 2016; 77:71-75. [DOI: 10.1016/j.humimm.2015.10.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 06/29/2015] [Accepted: 10/12/2015] [Indexed: 12/25/2022]
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Martins MD, Jiao Y, Larsson L, Almeida LO, Garaicoa-Pazmino C, Le JM, Squarize CH, Inohara N, Giannobile WV, Castilho RM. Epigenetic Modifications of Histones in Periodontal Disease. J Dent Res 2015; 95:215-22. [PMID: 26496800 DOI: 10.1177/0022034515611876] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Periodontitis is a chronic infectious disease driven by dysbiosis, an imbalance between commensal bacteria and the host organism. Periodontitis is a leading cause of tooth loss in adults and occurs in about 50% of the US population. In addition to the clinical challenges associated with treating periodontitis, the progression and chronic nature of this disease seriously affect human health. Emerging evidence suggests that periodontitis is associated with mechanisms beyond bacteria-induced protein and tissue degradation. Here, we hypothesize that bacteria are able to induce epigenetic modifications in oral epithelial cells mediated by histone modifications. In this study, we found that dysbiosis in vivo led to epigenetic modifications, including acetylation of histones and downregulation of DNA methyltransferase 1. In addition, in vitro exposure of oral epithelial cells to lipopolysaccharides resulted in histone modifications, activation of transcriptional coactivators, such as p300/CBP, and accumulation of nuclear factor-κB (NF-κB). Given that oral epithelial cells are the first line of defense for the periodontium against bacteria, we also evaluated whether activation of pathogen recognition receptors induced histone modifications. We found that activation of the Toll-like receptors 1, 2, and 4 and the nucleotide-binding oligomerization domain protein 1 induced histone acetylation in oral epithelial cells. Our findings corroborate the emerging concept that epigenetic modifications play a role in the development of periodontitis.
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Affiliation(s)
- M D Martins
- Laboratory of Epithelial Biology, University of Michigan School of Dentistry, Ann Arbor, MI, USA Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Y Jiao
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA Department of Pathology and Comprehensive Cancer Center, The University of Michigan Medical School, Ann Arbor, MI, USA
| | - L Larsson
- Department of Periodontology, Institute of Odontology, University of Gothenburg, Sweden
| | - L O Almeida
- Laboratory of Epithelial Biology, University of Michigan School of Dentistry, Ann Arbor, MI, USA Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - C Garaicoa-Pazmino
- Laboratory of Epithelial Biology, University of Michigan School of Dentistry, Ann Arbor, MI, USA Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - J M Le
- Laboratory of Epithelial Biology, University of Michigan School of Dentistry, Ann Arbor, MI, USA Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - C H Squarize
- Laboratory of Epithelial Biology, University of Michigan School of Dentistry, Ann Arbor, MI, USA Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - N Inohara
- Department of Pathology and Comprehensive Cancer Center, The University of Michigan Medical School, Ann Arbor, MI, USA
| | - W V Giannobile
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - R M Castilho
- Laboratory of Epithelial Biology, University of Michigan School of Dentistry, Ann Arbor, MI, USA Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
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Song L, Yao J, He Z, Xu B. Genes related to inflammation and bone loss process in periodontitis suggested by bioinformatics methods. BMC Oral Health 2015; 15:105. [PMID: 26334995 PMCID: PMC4559289 DOI: 10.1186/s12903-015-0086-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 08/18/2015] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Despite of numerous studies on periodontitis, the mechanism underlying the progression of periodontitis still remains largely unknown. This study aimed to have an expression profiling comparison between periodontitis and normal control and to identify more candidate genes involved in periodontitis and to gain more insights into the molecular mechanisms of periodontitis progression. METHODS The gene expression profile of GSE16134, comprising 241 gingival tissue specimens and 69 healthy samples as control which were obtained from 120 systemically healthy patients with periodontitis (65 with chronic and 55 with aggressive periodontitis), was downloaded from the Gene Expression Omnibus (GEO) database. Differentially expressed genes (DEGs) in periodontitis samples were screened using the limma package in R compared with control samples. Gene Ontology (GO) and pathway enrichment analysis upon the DEGs were carried out using Hypergeometric Distribution test. Protein-protein interaction (PPI) network of the DEGs was constructed using Cytoscape, followed by module selection from the PPI network using MCODE plugin. Moreover, transcription factors (TFs) of these DEGs were identified based on TRANSFAC database and then a regulatory network was constructed. RESULTS Totally, 762 DEGs (507 up- and 255 down-regulated) in periodontitis samples were identified. DEGs were enriched in different GO terms and pathways, such as immune system process, cell activation biological processes, cytokine-cytokine receptor interaction, and metabolic pathways. Cathepsin S (CTSS) and pleckstrin (PLEK) were the hub proteins in the PPI network and 3 significant modules were selected. Moreover, 19 TFs were identified including interferon regulatory factor 8 (IRF8), and FBJ murine osteosarcoma viral oncogene homolog B (FOSB). CONCLUSION This study identified genes (CTSS, PLEK, IRF-8, PTGS2, and FOSB) that may be involved in the development and progression of periodontitis.
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Affiliation(s)
- Liang Song
- Department of Stomatology, The Fifth People's Hospital of Shanghai, Fudan University, No.128, Ruili Rd, Minhang District, Shanghai, 200240, China.
| | - Jueqi Yao
- Department of Endodontics, Shanghai Oral Disease Prevention and Cure Center, Shanghai, 200031, China.
| | - Zhijing He
- Department of Stomatology, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan Province, China.
| | - Bin Xu
- Department of Stomatology, The Fifth People's Hospital of Shanghai, Fudan University, No.128, Ruili Rd, Minhang District, Shanghai, 200240, China.
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Lavu V, Venkatesan V, Rao SR. The epigenetic paradigm in periodontitis pathogenesis. J Indian Soc Periodontol 2015; 19:142-9. [PMID: 26015662 PMCID: PMC4439621 DOI: 10.4103/0972-124x.145784] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Accepted: 09/29/2014] [Indexed: 01/07/2023] Open
Abstract
Epigenome refers to “epi” meaning outside the “genome.” Epigenetics is the field of study of the epigenome. Epigenetic modifications include changes in the promoter CpG Islands, modifications of histone protein structure, posttranslational repression by micro-RNA which contributes to the alteration of gene expression. Epigenetics provides an understanding of the role of gene-environment interactions on disease phenotype especially in complex multifactorial diseases. Periodontitis is a chronic inflammatory disorder that affects the supporting structures of the tooth. The role of the genome (in terms of genetic polymorphisms) in periodontitis pathogenesis has been examined in numerous studies, and chronic periodontitis has been established as a polygenic disorder. The potential role of epigenetic modifications in the various facets of pathogenesis of periodontitis is discussed in this paper based on the available literature.
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Affiliation(s)
- Vamsi Lavu
- Department of Periodontology, Faculty of Dental Sciences, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
| | - Vettriselvi Venkatesan
- Department of Human Genetics, Faculty of Bio-Medical Sciences, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
| | - Suresh Ranga Rao
- Department of Periodontology, Faculty of Dental Sciences, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
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Offenbacher S, Beck JD. Commentary: changing paradigms in the oral disease-systemic disease relationship. J Periodontol 2015; 85:761-4. [PMID: 24875011 DOI: 10.1902/jop.2014.140115] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Steven Offenbacher
- W.R. Kenan Distinguished Professor and Chair, Department of Periodontology, University of North Carolina School of Dentistry, North Carolina Oral Health Institute, Chapel Hill, NC
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Larsson L, Castilho RM, Giannobile WV. Epigenetics and its role in periodontal diseases: a state-of-the-art review. J Periodontol 2014; 86:556-68. [PMID: 25415244 DOI: 10.1902/jop.2014.140559] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The immune response to oral bacteria and the subsequent activation of inflammatory signaling is not only dependent on genetic factors. The importance of so-called epigenetic mechanisms presents additional regulatory pathways of genes involved in maintaining chronic inflammation, including gingivitis and periodontitis. The term epigenetics relates to changes in gene expression that are not encoded in the DNA sequence itself and include chemical alterations of DNA and its associated proteins. These changes lead to remodeling of the chromatin and subsequent activation or inactivation of a gene. Epigenetic mechanisms have been found to contribute to disease, including cancer and autoimmune or inflammatory diseases. In this state-of-the art review, the authors provide the latest findings on the involvement of epigenetic modifications in the development of periodontal disease and present emerging therapeutic strategies aimed at epigenetic targets (epidrugs) associated with the disruption of tissue homeostasis and the development of periodontitis.
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Affiliation(s)
- Lena Larsson
- Currently, Department of Periodontology, Institute of Odontology, University of Gothenburg, Sweden; previously, Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI
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Seo JY, Park YJ, Yi YA, Hwang JY, Lee IB, Cho BH, Son HH, Seo DG. Epigenetics: general characteristics and implications for oral health. Restor Dent Endod 2014; 40:14-22. [PMID: 25671208 PMCID: PMC4320272 DOI: 10.5395/rde.2015.40.1.14] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 09/11/2014] [Indexed: 01/08/2023] Open
Abstract
Genetic information such as DNA sequences has been limited to fully explain mechanisms of gene regulation and disease process. Epigenetic mechanisms, which include DNA methylation, histone modification and non-coding RNAs, can regulate gene expression and affect progression of disease. Although studies focused on epigenetics are being actively investigated in the field of medicine and biology, epigenetics in dental research is at the early stages. However, studies on epigenetics in dentistry deserve attention because epigenetic mechanisms play important roles in gene expression during tooth development and may affect oral diseases. In addition, understanding of epigenetic alteration is important for developing new therapeutic methods. This review article aims to outline the general features of epigenetic mechanisms and describe its future implications in the field of dentistry.
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Affiliation(s)
- Ji-Yun Seo
- Department of Conservative Dentistry, Seoul National University School of Dentistry and Dental Research Institute, Seoul, Korea
| | - Yoon-Jung Park
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Korea
| | - Young-Ah Yi
- Department of Dentistry, Inje University Seoul Paik Hospital, Seoul, Korea
| | - Ji-Yun Hwang
- Nutrition Education Major, Graduate School of Education, Sangmyung University, Seoul, Korea
| | - In-Bog Lee
- Department of Conservative Dentistry, Seoul National University School of Dentistry and Dental Research Institute, Seoul, Korea
| | - Byeong-Hoon Cho
- Department of Conservative Dentistry, Seoul National University School of Dentistry and Dental Research Institute, Seoul, Korea
| | - Ho-Hyun Son
- Department of Conservative Dentistry, Seoul National University School of Dentistry and Dental Research Institute, Seoul, Korea
| | - Deog-Gyu Seo
- Department of Conservative Dentistry, Seoul National University School of Dentistry and Dental Research Institute, Seoul, Korea
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Benakanakere M, Abdolhosseini M, Hosur K, Finoti LS, Kinane DF. TLR2 promoter hypermethylation creates innate immune dysbiosis. J Dent Res 2014; 94:183-91. [PMID: 25389002 DOI: 10.1177/0022034514557545] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Periodontitis is a common chronic inflammatory disease that is initiated by a complex microbial biofilm that poses significant health and financial burdens globally. Porphyromonas gingivalis is a predominant pathogen that maintains chronic inflammatory periodontitis. Toll-like receptors (TLRs) play an important role in periodontitis by recognizing pathogens and maintaining tissue homeostasis. Deficiencies in TLR expression and downstream signaling may reduce the host's innate defenses against pathogens, leading to bacterial persistence and exacerbated inflammation, which are now being better appreciated in disease pathologies. In the case of periodontitis, gingival epithelial cells form the first line of defense against pathogens. Innate immune dysregulation in these cells relates to severe disease pathology. We recently identified a blunted TLR2 expression in certain gingival epithelial cells expressing diminished cytokine signaling upon P. gingivalis stimulation. Upon detailed analysis of the TLR2 promoter CpG Island, we noted higher CpG methylation in this dysregulated cell type. When these cells were treated with DNA methyltransferase inhibitor, TLR2 mRNA and cytokine expression were significantly increased. If TLR2 expression plasmid was ectopically expressed in dysfunctional cells prior to P. gingivalis stimulation, the cytokine expression was increased, confirming the requirement of TLR2 in the P. gingivalis-mediated inflammatory response. We designed a chronic in vitro infection model to test if P. gingivalis can induce DNA methylation in normal gingival epithelial cells that express higher TLR2 upon agonist stimulation. Chronic treatment of normal epithelial cells with P. gingivalis introduced de novo DNA methylation within the cells. In addition, increased DNA methylation was observed in the gingiva of mice infected with P. gingivalis in a periodontitis oral gavage model. Moreover, tissues obtained from periodontitis patients also exhibited differential TLR2 promoter methylation, as revealed by bisulfite DNA sequencing. Taken together, DNA methylation of TLR2 can modulate host innate defense mechanisms that may confer increased disease susceptibility.
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Affiliation(s)
- M Benakanakere
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - M Abdolhosseini
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - K Hosur
- Department of Microbiology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - L S Finoti
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - D F Kinane
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA Department of Pathology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
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Tatar IG, Ergun O, Kurt A, Sahin M, Hekimoğlu B. The role of elastosonography in the differentiation of parotid gland lesions: report of three cases and review of the literature. Pol J Radiol 2014; 79:398-401. [PMID: 25386225 PMCID: PMC4226314 DOI: 10.12659/pjr.891019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 06/09/2014] [Indexed: 01/31/2023] Open
Abstract
Background The parotid gland is the mostly affected site among major salivary gland tumors in up to 85% of cases. Preoperative knowledge of the tumour nature is crucial since it influences the surgical procedure and patient’s morbidity, especially the risk of facial nerve palsy. Ultrasonography is commonly used as the first line imaging modality for the salivary gland lesions. A pitfall is that the histologic pleomorphism often reflects an imaging pleomorphism. Case Report Herein we aimed to present the role of elastosonography in three parotid lesions: a case of benign pleomorphic adenoma, a Wharthin’s tumour and a malignant parotid tumour. Conclusions Our findings show that malignant parotid lesion was the stiffest lesion according to elastosonography. Wharthin’s tumour demonstrated soft elastosonographic features. The pleomorphic adenoma was also interpreted as stiff by elastosonography suggesting that the elastosonographic features of pleomorphic adenoma may resemble those of malignant lesions limiting the utility of the technique.
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Affiliation(s)
- Idil Gunes Tatar
- Department of Radiology, Diskapi Research Hospital, Ankara, Turkey
| | - Onur Ergun
- Department of Radiology, Diskapi Research Hospital, Ankara, Turkey
| | - Aydin Kurt
- Department of Radiology, Diskapi Research Hospital, Ankara, Turkey
| | - Mustafa Sahin
- Department of Otorhinolaryngology, Diskapi Research Hospital, Ankara, Turkey
| | - Baki Hekimoğlu
- Department of Radiology, Diskapi Research Hospital, Ankara, Turkey
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Abiko Y, Uehara O, Fukumoto S, Ohta T. Epigenetics of oral infection and inflammatory diseases—DNA methylation changes in infections and inflammation diseases. J Oral Biosci 2014. [DOI: 10.1016/j.job.2014.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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