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Zhang J, Zhang H, Chen Y, Chen S, Liu H. Dendrobine alleviates oleic acid-induced lipid accumulation by inhibiting FOS/METTL14 pathway. J Mol Histol 2024:10.1007/s10735-024-10246-w. [PMID: 39136847 DOI: 10.1007/s10735-024-10246-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Accepted: 08/09/2024] [Indexed: 09/18/2024]
Abstract
Dendrobine (DDB), an alkaloid isolated from the Chinese herb Dendrobium, has antioxidant and anti-inflammatory effects; however, whether DDB reduces oleic acid (OA)-induced lipid accumulation remains unclear. OA-induced lipid accumulation model of HepG2 cells were treated with DDB. Cellular lipid deposition was assessed by Oil Red O (ORO) staining and triglyceride and total cholesterol detection. RNA-Sequencing (RNA-seq), biological function analysis, and transcription factor (TFs) prediction were combined to identify key TF in the DDB-treated OA model. Finally, the roles of FOS and METTL14 were examined using a DDB-induced lipid accumulation model. DDB inhibited OA-induced lipid accumulation. We identified 895 differentially expressed genes (DEGs) that were mainly enriched in various biological processes of lipid synthesis and transport. Four transcription factors (SOX9, MLXIPL, FOS, and JUN) associated with lipid metabolism and FOS levels in the OA-induced lipid accumulation model after DDB treatment had the greatest changes in expression change. Overexpression of FOS alleviates the inhibitory effect of DDB on OA-induced lipid accumulation. METTL14 is a target gene of FOS, and simultaneous interference with METTL14 in cells with high FOS expression restored the alleviating effect of DDB on lipid accumulation. DDB alleviated OA-induced lipid accumulation by inhibiting the FOS/METTL14 pathway.
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Affiliation(s)
- Junpei Zhang
- Department of Gastroenterology, Minhang Hospital of Fudan University, 170 Shensong Road, Shanghai, 201100, China
| | - Hongyun Zhang
- Department of Gastroenterology, Minhang Hospital of Fudan University, 170 Shensong Road, Shanghai, 201100, China
| | - Ying Chen
- Department of Gastroenterology, Minhang Hospital of Fudan University, 170 Shensong Road, Shanghai, 201100, China
| | - Shiyao Chen
- Department of Gastroenterology, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Hailing Liu
- Department of Gastroenterology, Minhang Hospital of Fudan University, 170 Shensong Road, Shanghai, 201100, China.
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2
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Mattos-Graner RO, Klein MI, Alves LA. The complement system as a key modulator of the oral microbiome in health and disease. Crit Rev Microbiol 2024; 50:138-167. [PMID: 36622855 DOI: 10.1080/1040841x.2022.2163614] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 01/10/2023]
Abstract
In this review, we address the interplay between the complement system and host microbiomes in health and disease, focussing on oral bacteria known to contribute to homeostasis or to promote dysbiosis associated with dental caries and periodontal diseases. Host proteins modulating complement activities in the oral environment and expression profiles of complement proteins in oral tissues were described. In addition, we highlight a sub-set of bacterial proteins involved in complement evasion and/or dysregulation previously characterized in pathogenic species (or strains), but further conserved among prototypical commensal species of the oral microbiome. Potential roles of these proteins in host-microbiome homeostasis and in the emergence of commensal strain lineages with increased virulence were also addressed. Finally, we provide examples of how commensal bacteria might exploit the complement system in competitive or cooperative interactions within the complex microbial communities of oral biofilms. These issues highlight the need for studies investigating the effects of the complement system on bacterial behaviour and competitiveness during their complex interactions within oral and extra-oral host sites.
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Affiliation(s)
- Renata O Mattos-Graner
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Sao Paulo, Brazil
| | - Marlise I Klein
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Sao Paulo, Brazil
| | - Lívia Araújo Alves
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Sao Paulo, Brazil
- School of Dentistry, Cruzeiro do Sul University (UNICSUL), Sao Paulo, Brazil
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3
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Xiang J, Cao J, Shen J, Wang X, Liang J, Li X, Zhang L, Tang B. Bioinformatics analysis reveals the potential common genes and immune characteristics between atrial fibrillation and periodontitis. J Periodontal Res 2024; 59:104-118. [PMID: 37971162 DOI: 10.1111/jre.13192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 09/12/2023] [Accepted: 09/21/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND AND OBJECTIVE Atrial fibrillation (AF) and periodontitis, both classified under chronic inflammatory diseases, share common etiologies, including genetic factors and immune pathways. However, the exact mechanisms are still poorly understood. This study aimed to explore the potential common genes and immune characteristics between AF and periodontitis. METHODS Gene expression datasets for AF and periodontitis were downloaded from the Gene Expression Omnibus (GEO) database. Differential expression analysis was used to identify common genes in the training set. Functional analyses, including Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment, were conducted to elucidate the underlying mechanisms. Hub genes were further screened based on expression levels, receiver operating characteristic (ROC) curves, and least absolute shrinkage and selection operator (LASSO) regression. Then, based on the expression levels and ROC values of the hub genes in the validation set, the target genes were identified. Finally, immune cell infiltration analysis was performed on the AF and periodontitis datasets in the training set using the "CIBERSORT" R package. The relationships between target genes, infiltrating immune cells, and inflammatory factors were also investigated. In addition, AF susceptibility, atrial fibrosis, inflammatory infiltration, and RGS1 protein expression in rat models of periodontitis were assessed through in vivo electrophysiology experiments, Masson's trichrome staining, hematoxylin-eosin staining, immunohistochemistry, and western blotting, respectively. RESULTS A total of 21 common genes were identified between AF and periodontitis among the differentially expressed genes. After evaluating gene expression levels, ROC curves, and LASSO analysis, four significant genes between AF and periodontitis were identified, namely regulator of G-protein signaling 1 (RGS1), annexin A6 (ANXA6), solute carrier family 27 member 6 (SLC27A6), and ficolin 1 (FCN1). Further validation confirmed that RGS1 was the optimal shared target gene for AF and periodontitis. Immune cell infiltration analysis revealed that neutrophils and T cells play an important role in the pathogenesis of both diseases. RGS1 showed a significant positive correlation with activated memory CD4 T cells and gamma-delta T cells and a negative correlation with CD8 T cells and regulatory T cells in both training sets. Moreover, RGS1 was positively correlated with classical pro-inflammatory cytokines IL1β and IL6. In periodontitis rat models, AF susceptibility, atrial fibrosis, and inflammatory infiltration were significantly increased, and RGS1 expression in the atrial tissue was upregulated. CONCLUSION A common gene between AF and periodontitis, RGS1 appears central in linking the two conditions. Immune and inflammatory responses may underlie the interaction between AF and periodontitis.
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Affiliation(s)
- Jie Xiang
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
| | - Jiaru Cao
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
| | - Jun Shen
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
| | - Xiaoyan Wang
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
| | - Junqing Liang
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
| | - Xinshang Li
- Department of General and Emergency Dentistry, The First Affiliated Hospital (The Affiliated S Tomato Logical Hospital) of Xinjiang Medical University, Xinjiang, Urumqi, China
| | - Ling Zhang
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
| | - Baopeng Tang
- Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
- Department of Pacing and Electrophysiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, Urumqi, China
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4
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Amato M, Di Spirito F, D’Ambrosio F, Boccia G, Moccia G, De Caro F. Probiotics in Periodontal and Peri-Implant Health Management: Biofilm Control, Dysbiosis Reversal, and Host Modulation. Microorganisms 2022; 10:2289. [PMID: 36422359 PMCID: PMC9694231 DOI: 10.3390/microorganisms10112289] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/10/2022] [Accepted: 11/16/2022] [Indexed: 07/30/2023] Open
Abstract
Periodontitis and peri-implantitis are microbially associated diseases of the tissues supporting the teeth and dental implants that are mediated by host inflammation and eventually lead to tooth and dental implant loss. Given the probiotics' role in biofilm control, dysbiosis reversal, and host modulation, their potential beneficial effects on the improvement of periodontitis and peri-implantitis have been recently investigated. Moreover, probiotics use has also been proposed in periodontal health management in patients undergoing fixed orthodontic therapy. Therefore, the present study aimed to review, considering the periodontal microbiome composition around teeth and dental implants in healthy and pathological conditions, the putative favorable effects of probiotics on gingivitis, periodontitis, and peri-implantitis. The secondary aim of the present narrative review was to synthesize the supporting evidence and proposed protocols for probiotics use as adjuncts in periodontitis and peri-implantitis treatment and the periodontal health management of orthodontic patients with fixed appliances. Contrasting findings from the literature may be due to the different methods, posology, and duration of probiotics prescriptions and due to the heterogeneous biological and clinical measurement methods employed. Thus, no definitive conclusions could be drawn about the effectiveness of probiotics in periodontal management, both in healthy and pathological conditions. Further studies are needed to validate probiotics for periodontal management and provide recommended protocols.
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Liu W, Qiu W, Huang Z, Zhang K, Wu K, Deng K, Chen Y, Guo R, Wu B, Chen T, Fang F. Identification of nine signature proteins involved in periodontitis by integrated analysis of TMT proteomics and transcriptomics. Front Immunol 2022; 13:963123. [PMID: 36016933 PMCID: PMC9397367 DOI: 10.3389/fimmu.2022.963123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 07/15/2022] [Indexed: 11/21/2022] Open
Abstract
Recently, there are many researches on signature molecules of periodontitis derived from different periodontal tissues to determine the disease occurrence and development, and deepen the understanding of this complex disease. Among them, a variety of omics techniques have been utilized to analyze periodontitis pathology and progression. However, few accurate signature molecules are known and available. Herein, we aimed to screened and identified signature molecules suitable for distinguishing periodontitis patients using machine learning models by integrated analysis of TMT proteomics and transcriptomics with the purpose of finding novel prediction or diagnosis targets. Differential protein profiles, functional enrichment analysis, and protein–protein interaction network analysis were conducted based on TMT proteomics of 15 gingival tissues from healthy and periodontitis patients. DEPs correlating with periodontitis were screened using LASSO regression. We constructed a new diagnostic model using an artificial neural network (ANN) and verified its efficacy based on periodontitis transcriptomics datasets (GSE10334 and GSE16134). Western blotting validated expression levels of hub DEPs. TMT proteomics revealed 5658 proteins and 115 DEPs, and the 115 DEPs are closely related to inflammation and immune activity. Nine hub DEPs were screened by LASSO, and the ANN model distinguished healthy from periodontitis patients. The model showed satisfactory classification ability for both training (AUC=0.972) and validation (AUC=0.881) cohorts by ROC analysis. Expression levels of the 9 hub DEPs were validated and consistent with TMT proteomics quantitation. Our work reveals that nine hub DEPs in gingival tissues are closely related to the occurrence and progression of periodontitis and are potential signature molecules involved in periodontitis.
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Affiliation(s)
- Wei Liu
- Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, Shenzhen, China
| | - Wei Qiu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhendong Huang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Kaiying Zhang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Keke Wu
- Department of Histology and Embryology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Ke Deng
- Shanghai Key Laboratory of Stomatology, Department of Oral Implantology, Shanghai Ninth People Hospital, National Center of Stomatology, National Clinical Research Center of Oral Diseases, School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Yuanting Chen
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ruiming Guo
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Buling Wu
- Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, Shenzhen, China
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- *Correspondence: Fuchun Fang, ; Ting Chen, ; Buling Wu,
| | - Ting Chen
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- *Correspondence: Fuchun Fang, ; Ting Chen, ; Buling Wu,
| | - Fuchun Fang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- *Correspondence: Fuchun Fang, ; Ting Chen, ; Buling Wu,
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6
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The Role of Polymorphisms at the Interleukin-1, Interleukin-4, GATA-3 and Cyclooxygenase-2 Genes in Non-Surgical Periodontal Therapy. Int J Mol Sci 2022; 23:ijms23137266. [PMID: 35806269 PMCID: PMC9266438 DOI: 10.3390/ijms23137266] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/21/2022] [Accepted: 06/27/2022] [Indexed: 02/06/2023] Open
Abstract
Periodontitis is a multifactorial disease. The aim of this explorative study was to investigate the role of Interleukin-(IL)-1, IL-4, GATA-3 and Cyclooxygenase-(COX)-2 polymorphisms after non-surgical periodontal therapy with adjunctive systemic antibiotics (amoxicillin/metronidazole) and subsequent maintenance in a Caucasian population. Analyses were performed using blood samples from periodontitis patients of a multi-center trial (ClinicalTrials.gov NCT00707369=ABPARO-study). Polymorphisms were analyzed using quantitative real-time PCR. Clinical attachment levels (CAL), percentage of sites showing further attachment loss (PSAL) ≥1.3 mm, bleeding on probing (BOP) and plaque score were assessed. Exploratory statistical analysis was performed. A total of 209 samples were genotyped. Patients carrying heterozygous genotypes and single-nucleotide-polymorphisms (SNP) on the GATA-3-IVS4 +1468 gene locus showed less CAL loss than patients carrying wild type. Heterozygous genotypes and SNPs on the IL-1A-889, IL-1B +3954, IL-4-34, IL-4-590, GATA-3-IVS4 +1468 and COX-2-1195 gene loci did not influence CAL. In multivariate analysis, CAL was lower in patients carrying GATA-3 heterozygous genotypes and SNPs than those carrying wild-types. For the first time, effects of different genotypes were analyzed in periodontitis progression after periodontal therapy and during supportive treatment using systemic antibiotics demonstrating a slight association of GATA-3 gene locus with CAL. This result suggests that GATA-3 genotypes are a contributory but non-essential risk factor for periodontal disease progression.
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7
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Liao Z, Zhao T, Wang N, Chen J, Sun W, Wu J. Transcriptome Analysis of Monocytes and Fibroblasts Provides Insights Into the Molecular Features of Periodontal Ehlers-Danlos Syndrome. Front Genet 2022; 13:834928. [PMID: 35571048 PMCID: PMC9095904 DOI: 10.3389/fgene.2022.834928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 03/30/2022] [Indexed: 11/13/2022] Open
Abstract
Periodontal Ehlers–Danlos syndrome (pEDS) is a rare hereditary disorder characterized by severe early-onset periodontitis with premature tooth loss, pretibial hyperpigmentation, and skin fragility. It is caused by mutant variants in the C1R and C1S genes that result in C4 cleavage and local complement cascade activation, as well as other possible consequences. However, the exact functional consequences of this activation remain unclear. To shed light on molecular mechanisms underlying pEDS and to identify novel molecular targets that may expand treatment strategies, we performed transcriptome profiling by RNA sequencing of monocytes and gingival fibroblasts from two patients with pEDS. Compared to normal controls, differential expression of genes was found only in monocytes but not gingival fibroblasts. Most of the significant genes were enriched in biological processes such as neutrophil-mediated immunity, response to bacterium, TNF-α and IL-17 pathway which are related to inflammation response and immune response. In disease ontology enrichment analysis, genes related to periodontal host defense, inflammatory response, skin disease, and vascular development, including MMP9, VEGFA, IL10, IL1A, IL1B, IL2RA, and IL6, were significantly enriched and also validated by qPCR and ELISA. Overall, the present study provides the transcriptomic data of pEDS for the first time and the distinct molecular features in monocytes of pEDS might serve as a tool to better understand the disease.
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Affiliation(s)
- Zhuoyi Liao
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Tian Zhao
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Ningxiang Wang
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Department of Stomatology, Nanjing Hospital of Chinese Medicine, Nanjing University of Traditional Chinese Medicine, Nanjing, China
| | - Jiaqi Chen
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.,Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Weibin Sun
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Juan Wu
- Department of Periodontology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
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8
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Alim MA, Njenda D, Lundmark A, Kaminska M, Jansson L, Eriksson K, Kats A, Johannsen G, Arvidsson CK, Mydel PM, Yucel-Lindberg T. Pleckstrin Levels Are Increased in Patients with Chronic Periodontitis and Regulated via the MAP Kinase-p38α Signaling Pathway in Gingival Fibroblasts. Front Immunol 2022; 12:801096. [PMID: 35087525 PMCID: PMC8787058 DOI: 10.3389/fimmu.2021.801096] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 12/16/2021] [Indexed: 11/13/2022] Open
Abstract
Chronic periodontitis (CP) is a bacteria-driven inflammatory disease characterized by the breakdown of gingival tissue, the periodontal ligament, and alveolar bone, leading ultimately to tooth loss. We previously reported the pleckstrin gene (PLEK) to be highly upregulated in gingival tissue of patients with CP and the only gene concurrently upregulated in other inflammatory diseases including rheumatoid arthritis and cardiovascular diseases. Using saliva from 169 individuals diagnosed with CP and healthy controls, we investigated whether pleckstrin could serve as a novel biomarker of periodontitis. Additionally, we explored signal pathways involved in the regulation of PLEK using human gingival fibroblasts (HGFs). Pleckstrin levels were significantly higher (p < 0.001) in the saliva samples of patients with CP compared to controls and closely associated with CP severity. Immunohistochemical analysis revealed the expression of pleckstrin in inflammatory cells and gingival fibroblasts of CP patients. To explore the signal pathways involved in pleckstrin regulation, we stimulated HGFs with either interleukin-1β (IL-1β) or lipopolysaccharides (LPS) alone, or in combination with inhibitors targeting c-Jun N-terminal kinase, tyrosine kinase, protein kinase C, or p38 MAP kinase. Results showed that IL-1β and LPS significantly increased PLEK mRNA and pleckstrin protein levels. VX-745, the p38 MAP kinase inhibitor significantly decreased IL-1β- and LPS-induced pleckstrin levels at both the mRNA and the protein level. Together, these findings show that pleckstrin could serve as a salivary biomarker for the chronic inflammatory disease periodontitis and a regulator of inflammation via the p38 MAP kinase pathway.
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Affiliation(s)
- M Abdul Alim
- Department of Dental Medicine, Division of Pediatric Dentistry, Karolinska Institutet, Huddinge, Sweden
| | - Duncan Njenda
- Department of Dental Medicine, Division of Periodontology, Karolinska Institutet, Huddinge, Sweden
| | - Anna Lundmark
- Department of Dental Medicine, Division of Pediatric Dentistry, Karolinska Institutet, Huddinge, Sweden.,Department of Dental Medicine, Division of Periodontology, Karolinska Institutet, Huddinge, Sweden
| | - Marta Kaminska
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Leif Jansson
- Department of Dental Medicine, Division of Periodontology, Karolinska Institutet, Huddinge, Sweden.,Department of Periodontology, Folktandvården Stockholms län AB, Folktandvården Eastmaninstitutet, Stockholm, Sweden
| | - Kaja Eriksson
- Department of Dental Medicine, Division of Pediatric Dentistry, Karolinska Institutet, Huddinge, Sweden.,Department of Dental Medicine, Division of Periodontology, Karolinska Institutet, Huddinge, Sweden
| | - Anna Kats
- Department of Dental Medicine, Division of Periodontology, Karolinska Institutet, Huddinge, Sweden
| | - Gunnar Johannsen
- Department of Dental Medicine, Division of Periodontology, Karolinska Institutet, Huddinge, Sweden
| | - Catalin Koro Arvidsson
- Department of Dental Medicine, Division of Periodontology, Karolinska Institutet, Huddinge, Sweden
| | - Piotr M Mydel
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland.,Department of Clinical Science, Broegelmann Laboratory, University of Bergen, Bergen, Norway
| | - Tülay Yucel-Lindberg
- Department of Dental Medicine, Division of Pediatric Dentistry, Karolinska Institutet, Huddinge, Sweden
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9
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Hao X, Li Z, Li W, Katz J, Michalek SM, Barnum SR, Pozzo-Miller L, Saito T, Saido TC, Wang Q, Roberson ED, Zhang P. Periodontal Infection Aggravates C1q-Mediated Microglial Activation and Synapse Pruning in Alzheimer's Mice. Front Immunol 2022; 13:816640. [PMID: 35178049 PMCID: PMC8845011 DOI: 10.3389/fimmu.2022.816640] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/11/2022] [Indexed: 12/24/2022] Open
Abstract
Periodontitis is a dysbiotic infectious disease that leads to the destruction of tooth supporting tissues. There is increasing evidence that periodontitis may affect the development and severity of Alzheimer's disease (AD). However, the mechanism(s) by which periodontal infection impacts the neurodegenerative process in AD remains unclear. In the present study, using an amyloid precursor protein (APP) knock-in (App KI) AD mouse model, we showed that oral infection with Porphyromonas gingivalis (Pg), a keystone pathogen of periodontitis, worsened behavioral and cognitive impairment and accelerated amyloid beta (Aβ) accumulation in AD mice, thus unquestionably and significantly aggravating AD. We also provide new evidence that the neuroinflammatory status established by AD, is greatly complicated by periodontal infection and the consequential entry of Pg into the brain via Aβ-primed microglial activation, and that Pg-induced brain overactivation of complement C1q is critical for periodontitis-associated acceleration of AD progression by amplifying microglial activation, neuroinflammation, and tagging synapses for microglial engulfment. Our study renders support for the importance of periodontal infection in the innate immune regulation of AD and the possibility of targeting microbial etiology and periodontal treatment to ameliorate the clinical manifestation of AD and lower AD prevalence.
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Affiliation(s)
- Xiaoxiao Hao
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Zhaofei Li
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Wei Li
- Department of Neurobiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Jannet Katz
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Suzanne M. Michalek
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | | | - Lucas Pozzo-Miller
- Department of Neurobiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Takashi Saito
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Wako, Japan
- Department of Neurocognitive Science, Institute of Brain Science, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takaomi C. Saido
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Wako, Japan
| | - Qin Wang
- Department of Cell, Developmental and Integrative Biology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Erik D. Roberson
- Center for Neurodegeneration and Experimental Therapeutics, Alzheimer’s Disease Center, Department of Neurology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Ping Zhang
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, United States
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10
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Microbiota in Periodontitis: Advances in the Omic Era. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1373:19-43. [DOI: 10.1007/978-3-030-96881-6_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Salesa B, Sabater i Serra R, Serrano-Aroca Á. Zinc Chloride: Time-Dependent Cytotoxicity, Proliferation and Promotion of Glycoprotein Synthesis and Antioxidant Gene Expression in Human Keratinocytes. BIOLOGY 2021; 10:1072. [PMID: 34827065 PMCID: PMC8615178 DOI: 10.3390/biology10111072] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/15/2021] [Accepted: 10/16/2021] [Indexed: 11/20/2022]
Abstract
The use of ionic metals such as zinc (Zn2+) is providing promising results in regenerative medicine. In this study, human keratinocytes (HaCaT cells) were treated with different concentrations of zinc chloride (ZnCl2), ranging from 1 to 800 µg/mL, for 3, 12 and 24 h. The results showed a time-concentration dependence with three non-cytotoxic concentrations (10, 5 and 1 µg/mL) and a median effective concentration value of 13.5 µg/mL at a cell exposure to ZnCl2 of 24 h. However, the zinc treatment with 5 or 1 µg/mL had no effect on cell proliferation in HaCaT cells in relation to the control sample at 72 h. The effects of the Zn2+ treatment on the expression of several genes related to glycoprotein synthesis, oxidative stress, proliferation and differentiation were assessed at the two lowest non-cytotoxic concentrations after 24 h of treatment. Out of 13 analyzed genes (superoxide dismutase 1 (SOD1), catalase (CAT), matrix metallopeptidase 1 (MMP1), transforming growth factor beta 1 (TGFB1), glutathione peroxidase 1 (GPX1), fibronectin 1 (FN1), hyaluronan synthase 2 (HAS2), laminin subunit beta 1 (LAMB1), lumican (LUM), cadherin 1 (CDH1), collagen type IV alpha (COL4A1), fibrillin (FBN) and versican (VCAN)), Zn2+ was able to upregulate SOD1, CAT, TGFB1, GPX1, LUM, CDH1, FBN and VCAN, with relative expression levels of at least 1.9-fold with respect to controls. We found that ZnCl2 promoted glycoprotein synthesis and antioxidant gene expression, thus confirming its great potential in biomedicine.
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Affiliation(s)
- Beatriz Salesa
- Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, 46022 València, Spain;
| | - Roser Sabater i Serra
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 València, Spain
- Biomedical Research Networking Center, Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 46022 Valencia, Spain
| | - Ángel Serrano-Aroca
- Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, 46022 València, Spain;
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12
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Qian SJ, Huang QR, Chen RY, Mo JJ, Zhou LY, Zhao Y, Li B, Lai HC. Single-Cell RNA Sequencing Identifies New Inflammation-Promoting Cell Subsets in Asian Patients With Chronic Periodontitis. Front Immunol 2021; 12:711337. [PMID: 34566966 PMCID: PMC8455889 DOI: 10.3389/fimmu.2021.711337] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 08/17/2021] [Indexed: 01/01/2023] Open
Abstract
Periodontitis is a highly prevalent chronic inflammatory disease leading to periodontal tissue breakdown and subsequent tooth loss, in which excessive host immune response accounts for most of the tissue damage and disease progression. Despite of the imperative need to develop host modulation therapy, the inflammatory responses and cell population dynamics which are finely tuned by the pathological microenvironment in periodontitis remained unclear. To investigate the local microenvironment of the inflammatory response in periodontitis, 10 periodontitis patients and 10 healthy volunteers were involved in this study. Single-cell transcriptomic profilings of gingival tissues from two patients and two healthy donors were performed. Histology, immunohistochemistry, and flow cytometry analysis were performed to further validate the identified cell subtypes and their involvement in periodontitis. Based on our single-cell resolution analysis, we identified HLA-DR-expressing endothelial cells and CXCL13+ fibroblasts which are highly associated with immune regulation. We also revealed the involvement of the proinflammatory NLRP3+ macrophages in periodontitis. We further showed the increased cell-cell communication between macrophage and T/B cells in the inflammatory periodontal tissues. Our data generated an intriguing catalog of cell types and interaction networks in the human gingiva and identified new inflammation-promoting cell subtypes involved in chronic periodontitis, which will be helpful in advancing host modulation therapy.
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Affiliation(s)
- Shu-jiao Qian
- Department of Oral and Maxillo-facial Dentistry, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Qian-ru Huang
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rui-ying Chen
- Department of Oral and Maxillo-facial Dentistry, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Jia-ji Mo
- Department of Oral and Maxillo-facial Dentistry, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Lin-yi Zhou
- Department of Oral and Maxillo-facial Dentistry, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Yi Zhao
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bin Li
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Hong-chang Lai
- Department of Oral and Maxillo-facial Dentistry, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai, China
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13
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Ebersole JL, Nagarajan R, Kirakodu S, Gonzalez OA. Transcriptomic phases of periodontitis lesions using the nonhuman primate model. Sci Rep 2021; 11:9282. [PMID: 33927312 PMCID: PMC8085193 DOI: 10.1038/s41598-021-88803-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/09/2021] [Indexed: 11/09/2022] Open
Abstract
We used a nonhuman primate model of ligature-induced periodontitis to identify patterns of gingival transcriptomic after changes demarcating phases of periodontitis lesions (initiation, progression, resolution). A total of 18 adult Macaca mulatta (12-22 years) had ligatures placed (premolar, 1st molar teeth) in all 4 quadrants. Gingival tissue samples were obtained (baseline, 2 weeks, 1 and 3 months during periodontitis and at 5 months resolution). Gene expression was analyzed by microarray [Rhesus Gene 1.0 ST Array (Affymetrix)]. Compared to baseline, a large array of genes were significantly altered at initiation (n = 6049), early progression (n = 4893), and late progression (n = 5078) of disease, with the preponderance being up-regulated. Additionally, 1918 genes were altered in expression with disease resolution, skewed towards down-regulation. Assessment of the genes demonstrated specific profiles of epithelial, bone/connective tissue, apoptosis/autophagy, metabolism, regulatory, immune, and inflammatory responses that were related to health, stages of disease, and tissues with resolved lesions. Unique transcriptomic profiles occured during the kinetics of the periodontitis lesion exacerbation and remission. We delineated phase specific gene expression profiles of the disease lesion. Detection of these gene products in gingival crevicular fluid samples from human disease may contribute to a better understanding of the biological dynamics of the disease to improve patient management.
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Affiliation(s)
- Jeffrey L Ebersole
- Department of Biomedical Sciences, School of Dental Medicine, B221, University of Nevada Las Vegas, 1001 Shadow Lane, Las Vegas, NV, 89106, USA.
- Center for Oral Health Research College of Dentistry, University of Kentucky, Lexington, KY, USA.
| | | | - Sreenatha Kirakodu
- Center for Oral Health Research College of Dentistry, University of Kentucky, Lexington, KY, USA
| | - Octavio A Gonzalez
- Center for Oral Health Research College of Dentistry, University of Kentucky, Lexington, KY, USA
- Division of Periodontology, University of Kentucky, Lexington, KY, USA
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14
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Chae YK, Shin SY, Kang SW, Choi SC, Nam OH. Differential gene expression profiles of periodontal soft tissue from rat teeth after immediate and delayed replantation: a pilot study. J Periodontal Implant Sci 2021; 52:127-140. [PMID: 35505574 PMCID: PMC9064781 DOI: 10.5051/jpis.2104300215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/27/2021] [Accepted: 11/03/2021] [Indexed: 11/18/2022] Open
Abstract
Purpose In dental avulsion, delayed replantation usually has an uncertain prognosis. After tooth replantation, complex inflammatory responses promote a return to periodontal tissue homeostasis. Various types of cytokines are produced in the inflammatory microenvironment, and these cytokines determine the periodontal tissue response. This study aimed to identify the gene expression profiles of replanted teeth and evaluate the functional differences between immediate and delayed replantation. Methods Maxillary molars from Sprague-Dawley rats were extracted, exposed to a dry environment, and then replanted. The animals were divided into 2 groups according to the extra-oral time: immediate replantation (dry for 5 minutes) and delayed replantation (dry for 60 minutes). Either 3 or 7 days after replantation, the animals were sacrificed. Periodontal soft tissues were harvested for mRNA sequencing. Hallmark gene set enrichment analysis was performed to predict the function of gene-gene interactions. The normalized enrichment score (NES) was calculated to determine functional differences. Results The hallmark gene sets enriched in delayed replantation at 3 days were oxidative phosphorylation (NES=2.82, Q<0.001) and tumor necrosis factor-alpha (TNF-α) signaling via the nuclear factor kappa light chain enhancer of activated B cells (NF-κB) pathway (NES=1.52, Q=0.034). At 7 days after delayed replantation, TNF-α signaling via the NF-κB pathway (NES=–1.82, Q=0.002), angiogenesis (NES=–1.66, Q=0.01), and the transforming growth factor-beta signaling pathway (NES=–1.46, Q=0.051) were negatively highlighted. Conclusions Differentially expressed gene profiles were significantly different between immediate and delayed replantation. TNF-α signaling via the NF-κB pathway was marked during the healing process. However, the enrichment score of this pathway changed in a time-dependent manner between immediate and delayed replantation.
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Affiliation(s)
- Yong Kwon Chae
- Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University, Seoul, Korea
- Department of Dentistry, Graduate School, Kyung Hee University, Seoul, Korea
| | - Seo Young Shin
- Department of Dentistry, Graduate School, Kyung Hee University, Seoul, Korea
| | - Sang Wook Kang
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Sung Chul Choi
- Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Ok Hyung Nam
- Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University, Seoul, Korea
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15
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Grande MA, Belstrøm D, Damgaard C, Holmstrup P, Thangaraj SS, Nielsen CH, Palarasah Y. Complement split product C3c in saliva as biomarker for periodontitis and response to periodontal treatment. J Periodontal Res 2020; 56:27-33. [PMID: 32681659 PMCID: PMC7891408 DOI: 10.1111/jre.12788] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/28/2020] [Accepted: 06/30/2020] [Indexed: 12/23/2022]
Abstract
Background and Objective The complement system is engaged in inflammatory reactions both in the periodontal pockets and in the periodontium itself, where it can mediate tissue destruction. The aim of this study was, first, to compare salivary levels of the total complement system protein C3 and its split product, fluid‐phase C3c in patients with periodontitis and periodontally healthy controls. Next, to determine if C3 and C3c levels had biomarker potential in diagnosing and monitoring periodontitis and its treatment. We hypothesized that salivary levels of total C3 and the split product C3c associated with the severity of periodontitis and reflected decreased inflammatory activity after periodontal treatment. Methods At baseline, stimulated saliva samples were collected from patients with periodontitis (n = 18) and periodontally healthy controls (n = 15). Subsequently, non‐surgical periodontal treatment was performed in the patients, and saliva sampling from patients was repeated two‐, six‐, and twelve weeks post‐treatment (NCT02913248 at clinicaltrials.gov). The patients were grouped as good and poor responders to treatment according to the achieved reduction in bleeding on probing (BOP). Salivary levels of C3 and C3c were quantified using sandwich ELISA. Results Patients with periodontitis had higher baseline levels of both total C3 and the split product C3c in saliva than did periodontally healthy controls (P < .0001). Receiver operating curve (ROC) analyses discriminated patients with periodontitis from controls based on both C3 (AUC (area under curve) = 0.91, P < .001) and C3c levels (AUC = 0.84, P < .001) in saliva. Periodontal treatment improved all clinical parameters (P < .01). Good responders (n = 10) had lower baseline levels of C3c than poor responders (n = 8), (P < .05), and baseline levels of C3c discriminated between good and poor responders (AUC = 0.80, P < .05). Conclusion In conclusion, patients with periodontitis had higher salivary levels of C3c, and the C3c levels were predictive of reductions in BOP, that is, the poor responders. This suggests that salivary C3c levels possess potential to serve as a biomarker predicting the clinical response to non‐surgical periodontal treatment.
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Affiliation(s)
- Maria Anastasia Grande
- Section Clinical Oral Microbiology, Periodontology, Faculty of Health and Medical Sciences, Department of Odontology, University of Copenhagen, Copenhagen, Denmark
| | - Daniel Belstrøm
- Section Clinical Oral Microbiology, Periodontology, Faculty of Health and Medical Sciences, Department of Odontology, University of Copenhagen, Copenhagen, Denmark
| | - Christian Damgaard
- Section for Oral Biology and Immunopathology, Periodontology, Faculty of Health and Medical Sciences, Department of Odontology, University of Copenhagen, Copenhagen, Denmark.,Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen University Hospital, Glostrup, Denmark
| | - Palle Holmstrup
- Section for Oral Biology and Immunopathology, Periodontology, Faculty of Health and Medical Sciences, Department of Odontology, University of Copenhagen, Copenhagen, Denmark
| | - Sai Sindhu Thangaraj
- Faculty of Health and Medical Sciences, Department of Cancer and Inflammation, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Claus Henrik Nielsen
- Section for Oral Biology and Immunopathology, Periodontology, Faculty of Health and Medical Sciences, Department of Odontology, University of Copenhagen, Copenhagen, Denmark.,Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen University Hospital, Glostrup, Denmark
| | - Yaseelan Palarasah
- Faculty of Health and Medical Sciences, Department of Cancer and Inflammation, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
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16
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Abdulkareem AA, Abdulbaqi HR, Milward MR. In Vitro Homeostasis of Rat Oral Epithelial Cell Cultures Following Withdrawal of Periodontal Pathogens. Braz Dent J 2020; 31:135-142. [PMID: 32556012 DOI: 10.1590/0103-6440202002561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 11/25/2019] [Indexed: 11/22/2022] Open
Abstract
Inflammation of periodontal tissues is the consequence of interaction between periodontal pathogens and immune system. This is associated with increased expression of inflammatory cytokines, which may exert destructive effect to the periodontal tissues when released over long period. The aim of this study was to chronologically track the homeostasis of oral keratinocytes following removal of periodontal pathogens. This was done by investigating expression of selected inflammatory markers and integrity of epithelial monolayers in vitro. Rat oral keratinocytes were stimulated with heat-killed Fusobacterium nucleatum and Porphyromonas gingivalis over 7-days then bacteria were washed away and epithelial cells re-cultured for 3-days. Expression of IL-1β, IL-6, and IL-8 was measured by ELISA while transcription of tissue inhibitor of metalloproteinase-1 (TIMP-1) and matrix metalloproteinase -8 (MMP-8) was measured by polymerase chain reaction before and after removal of bacteria. Integrity of epithelial sheet was investigated by using transepithelial electrical resistance. Data showed general downregulation of IL-1b, IL-6, and IL-8 associated with restoring transcription of TIMP-1 and MMP-8 to normal level following removal of bacteria from epithelial cultures. However, expression of IL-8 and MMP-8 remained significantly higher than unstimulated epithelial cells despite withdrawal of F. nucleatum and P. gingivalis respectively from oral keratinocytes cultures. In addition, integrity of epithelial barrier function remained compromised even after removal of P. gingivalis. Results suggest that even after three days following removal of periodontal pathogens, oral keratinocytes sustained persistent upregulation of certain inflammatory markers that could compromise integrity of epithelial barrier function.
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Affiliation(s)
- Ali A Abdulkareem
- Department of Periodontics, College of Dentistry, University of Baghdad, Bagdad, Iraq
| | - Hayder R Abdulbaqi
- Department of Periodontics, College of Dentistry, University of Baghdad, Bagdad, Iraq
| | - Michael R Milward
- Department of Periodontology, School of Dentistry, University of Birmingham, Birmingham, UK
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17
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Hajishengallis G, Kajikawa T, Hajishengallis E, Maekawa T, Reis ES, Mastellos DC, Yancopoulou D, Hasturk H, Lambris JD. Complement-Dependent Mechanisms and Interventions in Periodontal Disease. Front Immunol 2019; 10:406. [PMID: 30915073 PMCID: PMC6422998 DOI: 10.3389/fimmu.2019.00406] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 02/15/2019] [Indexed: 12/20/2022] Open
Abstract
Periodontitis is a prevalent inflammatory disease that leads to the destruction of the tooth-supporting tissues. Current therapies are not effective for all patients and this oral disease continues to be a significant public health and economic burden. Central to periodontal disease pathogenesis is a reciprocally reinforced interplay between microbial dysbiosis and destructive inflammation, suggesting the potential relevance of host-modulation therapies. This review summarizes and discusses clinical observations and pre-clinical intervention studies that collectively suggest that complement is hyperactivated in periodontitis and that its inhibition provides a therapeutic benefit. Specifically, interception of the complement cascade at its central component, C3, using a locally administered small peptidic compound (Cp40/AMY-101) protected non-human primates from induced or naturally occurring periodontitis. These studies indicate that C3-targeted intervention merits investigation as an adjunctive treatment of periodontal disease in humans.
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Affiliation(s)
- George Hajishengallis
- Department of Microbiology, Penn Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Tetsuhiro Kajikawa
- Department of Microbiology, Penn Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Evlambia Hajishengallis
- Division of Pediatric Dentistry, Department of Preventive and Restorative Sciences, Penn Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Tomoki Maekawa
- Research Center for Advanced Oral Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Edimara S Reis
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Dimitrios C Mastellos
- Division of Biodiagnostic Sciences and Technologies, National Center for Scientific Research "Demokritos", Athens, Greece
| | | | - Hatice Hasturk
- Center for Clinical and Translational Research, Forsyth Institute, Cambridge, MA, United States
| | - John D Lambris
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
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18
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Li J, Wang R, Ge Y, Chen D, Wu B, Fang F. Assessment of microRNA-144-5p and its putative targets in inflamed gingiva from chronic periodontitis patients. J Periodontal Res 2018; 54:266-277. [PMID: 30450635 DOI: 10.1111/jre.12627] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 09/27/2018] [Accepted: 10/19/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND OBJECTIVE This study aimed to discover the distinctive MicroRNAs (miRNA) functioning in the pathogenesis of periodontal inflammation, which might be potential therapy targets of chronic periodontitis. MATERIAL AND METHODS miRNA profiles of human inflamed gingival tissue from three previous microarrays were re-analysed. Gingival tissues were collected for the validation of overlapping miRNAs, and a network was constructed to show regulatory connection between overlapping miRNAs and periodontitis-associated target genes. Potential miRNAs were screened based on their expression levels and predicted target genes. Correlation analysis and binding site prediction were conducted to reveal the relationship between the potential miRNAs and their target genes. RESULTS miR-144-5p, found to be upregulated in all three studies, showed the greatest upregulation (P < 0.0001). Another 16 miRNAs (10 upregulated and six downregulated) overlapped between any two of the three studies. All overlapping miRNAs had expected expression levels except for miR-203 during validation. Ten miRNAs (six upregulated and four downregulated) were found to have periodontal inflammation-associated targets. Cyclooxygenase 2 (COX2) and interleukin-17F (IL17F), predicted target genes of upregulated miR-144-5p, showed significant decreases and were negatively correlated with miR-144-5p in the periodontitis group (r = -0.742 for COX2, r = -0.615 for IL17F). CONCLUSION This re-analysis of miRNA signatures has implied the potential regulatory mechanism of miR-144-5p and its potential for exploring alternative therapeutic approaches, especially those that use miRNA delivery systems to treat chronic periodontitis. Nevertheless, further study based on larger sample size and homogenous cells is needed to reveal the exact roles of miRNAs in chronic periodontitis.
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Affiliation(s)
- Jianjia Li
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Runting Wang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yihong Ge
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Danhong Chen
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Buling Wu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Fuchun Fang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
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19
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Periodontitis may modulate long-non coding RNA expression. Arch Oral Biol 2018; 95:95-99. [DOI: 10.1016/j.archoralbio.2018.07.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 07/23/2018] [Accepted: 07/30/2018] [Indexed: 11/20/2022]
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20
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Lee DJ, Wu L, Shimono M, Piao Z, Green DW, Lee JM, Jung HS. Differential Mechanism of Periodontitis Progression in Postmenopause. Front Physiol 2018; 9:1098. [PMID: 30246792 PMCID: PMC6113945 DOI: 10.3389/fphys.2018.01098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 07/23/2018] [Indexed: 01/04/2023] Open
Abstract
Over the past four decades, it has become accepted that periodontal disease is caused by specific bacterial infections and that individuals are uniformly susceptible neither to these infections nor to the damage caused by them. The specific bacterial infections and the composition of the environment in which these bacteria easily settle cause an immune response. The immune cells involved in pathogenesis of periodontitis migrate into the periodontitis lesion and advance the disease. The purpose of the present study is to investigate the correlation between immune cell migration and progression of periodontal disease by inducing estrogen deficiency through ovariectomy (OVX) to mimic postmenopausal women and treatment with lipopolysaccharide (LPS). The LPS derived from Porphyromonas gingivalis induced periodontitis and absorption of the alveolar bone dose-dependently. However, the alveolar crest level reduction after LPS injection between OVX and Sham operated mice did not show a significant difference. Matrix metallopeptidase-9 (MMP-9), which is known to be able to detect the progression of periodontitis in general, was not significantly different between OVX and Sham groups. However, immune cells such as T-lymphocytes and neutrophils migrated less overall in OVX groups than Sham operated groups. These findings can be a topic of debate on the old controversy regarding the relationship between periodontal disease and hormonal change. Currently, in clinical practice, menopause is not a major consideration in the treatment of periodontal disease. This study suggests that treatment methods and medication should be considered in the treatment of infectious periodontal disease in postmenopausal women.
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Affiliation(s)
- Dong-Joon Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Lei Wu
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea.,Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatological Hospital of Guangzhou Medical University, Guangzhou, China
| | - Masaki Shimono
- Department of Pathology, Tokyo Dental College, Chiba, Japan
| | - Zhengguo Piao
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatological Hospital of Guangzhou Medical University, Guangzhou, China
| | - David W Green
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Jong-Min Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Han-Sung Jung
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea.,Applied Oral Biosciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, Hong Kong
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21
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Taiete T, Viana Casarin RC, Silvério Ruiz KG, Nociti Júnior FH, Sallum EA, Casati MZ. Transcriptome of Healthy Gingival Tissue from Edentulous Sites in Patients with a History of Aggressive Periodontitis. J Periodontol 2017; 89:93-104. [DOI: 10.1902/jop.2017.170221] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 08/17/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Tiago Taiete
- Department of Periodontics - Piracicaba Dental School/State University of Campinas, Piracicaba, Brazil
- Department of Dentistry - University of Araras, Araras, Brazil
| | | | | | | | - Enilson Antônio Sallum
- Department of Periodontics - Piracicaba Dental School/State University of Campinas, Piracicaba, Brazil
| | - Marcio Zaffalon Casati
- Department of Periodontics - Piracicaba Dental School/State University of Campinas, Piracicaba, Brazil
- Department of Periodontics, Paulista University, São Paulo, SP, Brazil
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22
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Khalid W, Varghese SS, Sankari M, Jayakumar ND. Comparison of Serum Levels of Endothelin-1 in Chronic Periodontitis Patients Before and After Treatment. J Clin Diagn Res 2017; 11:ZC78-ZC81. [PMID: 28571268 PMCID: PMC5449924 DOI: 10.7860/jcdr/2017/24518.9698] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 01/09/2017] [Indexed: 01/30/2023]
Abstract
INTRODUCTION Endothelin-1 (ET-1) is a potent vasoconstrictive peptide with multi functional activity in various systemic diseases. Previous studies indicate the detection of ET-1 in gingival tissues and gingival crevicular fluid. AIM The aim of this study was to estimate the serum ET-1 levels in clinically healthy subjects and subjects with chronic periodontitis, before and after treatment, and correlate it with the clinical parameters. MATERIALS AND METHODS A total of 44 patients were included in the study. Group I comprised of 20 subjects with clinically healthy periodontium. Group II comprised of 24 subjects with chronic periodontitis. Group III comprised of same Group II subjects following periodontal management. Serum samples were collected from the subjects and an Enzyme Linked Immunosorbent Assay (ELISA) was done to estimate the ET-1 levels. The ET-1 levels were then correlated among the three groups with the clinical parameters namely, Plaque Index (PI), Sulcus Bleeding Index (SBI), probing pocket depth, clinical attachment loss and Periodontally Inflamed Surface Area (PISA). The independent t-test and paired t-test were used for comparison of clinical parameters and Pearson's correlation coefficient test was used for correlating the ET-1 levels. RESULTS ET-1 levels in chronic periodontitis subjects were significantly higher compared to healthy subjects (p<0.001). However, the clinical parameters did not statistically correlate with the ET-1 levels. There was a significant decrease in ET-1 levels following treatment (p<0.001). CONCLUSION Serum ET-1 is increased in chronic periodontitis and reduces after periodontal therapy. Further studies are required to establish ET-1 as a biomarker for periodontal disease.
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Affiliation(s)
- Waleed Khalid
- Periodontist and Implantologist, The Dental Studio, Chennai, India
| | - Sheeja S Varghese
- Professor, Department of Periodontics and Implantology, Saveetha Dental College, Chennai, India
| | - M. Sankari
- Professor, Department of Periodontics and Implantology, Saveetha Dental College, Chennai, India
| | - ND. Jayakumar
- Professor, Department of Periodontics and Implantology, Saveetha Dental College, Chennai, India
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Groeger SE, Meyle J. Epithelial barrier and oral bacterial infection. Periodontol 2000 2017; 69:46-67. [PMID: 26252401 DOI: 10.1111/prd.12094] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/29/2015] [Indexed: 01/11/2023]
Abstract
The oral epithelial barrier separates the host from the environment and provides the first line of defense against pathogens, exogenous substances and mechanical stress. It consists of underlying connective tissue and a stratified keratinized epithelium with a basement membrane, whose cells undergo terminal differentiation resulting in the formation of a mechanically resistant surface. Gingival keratinocytes are connected by various transmembrane proteins, such as tight junctions, adherens junctions and gap junctions, each of which has a specialized structure and specific functions. Periodontal pathogens are able to induce inflammatory responses that lead to attachment loss and periodontal destruction. A number of studies have demonstrated that the characteristics of pathogenic oral bacteria influence the expression and structural integrity of different cell-cell junctions. Tissue destruction can be mediated by host cells following stimulation with cytokines and bacterial products. Keratinocytes, the main cell type in gingival epithelial tissues, express a variety of proinflammatory cytokines and chemokines, including interleukin-1alpha, interleukin-1beta, interleukin-6, interleukin-8 and tumor necrosis factor-alpha. Furthermore, the inflammatory mediators that may be secreted by oral keratinocytes are vascular endothelial growth factor, prostaglandin E2 , interleukin-1 receptor antagonist and chemokine (C-C motif) ligand 2. The protein family of matrix metalloproteinases is able to degrade all types of extracellular matrix protein, and can process a number of bioactive molecules. Matrix metalloproteinase activities under inflammatory conditions are mostly deregulated and often increased, and those mainly relevant in periodontal disease are matrix metalloproteinases 1, 2, 3, 8, 9, 13 and 24. Viral infection may also influence the epithelial barrier. Studies show that the expression of HIV proteins in the mucosal epithelium is correlated with the disruption of epithelial tight junctions, suggesting a possible enhancement of human papilloma virus infection by HIV-associated disruption of tight junctions. Altered expression of matrix metalloproteinases was demonstrated in keratinocytes transformed with human papilloma virus-16 or papilloma virus-18,. To summarize, the oral epithelium is able to react to a variety of exogenous, possibly noxious influences.
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Periodontal Ehlers-Danlos Syndrome Is Caused by Mutations in C1R and C1S, which Encode Subcomponents C1r and C1s of Complement. Am J Hum Genet 2016; 99:1005-1014. [PMID: 27745832 PMCID: PMC5097948 DOI: 10.1016/j.ajhg.2016.08.019] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 08/26/2016] [Indexed: 12/31/2022] Open
Abstract
Periodontal Ehlers-Danlos syndrome (pEDS) is an autosomal-dominant disorder characterized by early-onset periodontitis leading to premature loss of teeth, joint hypermobility, and mild skin findings. A locus was mapped to an approximately 5.8 Mb region at 12p13.1 but no candidate gene was identified. In an international consortium we recruited 19 independent families comprising 107 individuals with pEDS to identify the locus, characterize the clinical details in those with defined genetic causes, and try to understand the physiological basis of the condition. In 17 of these families, we identified heterozygous missense or in-frame insertion/deletion mutations in C1R (15 families) or C1S (2 families), contiguous genes in the mapped locus that encode subunits C1r and C1s of the first component of the classical complement pathway. These two proteins form a heterotetramer that then combines with six C1q subunits. Pathogenic variants involve the subunit interfaces or inter-domain hinges of C1r and C1s and are associated with intracellular retention and mild endoplasmic reticulum enlargement. Clinical features of affected individuals in these families include rapidly progressing periodontitis with onset in the teens or childhood, a previously unrecognized lack of attached gingiva, pretibial hyperpigmentation, skin and vascular fragility, easy bruising, and variable musculoskeletal symptoms. Our findings open a connection between the inflammatory classical complement pathway and connective tissue homeostasis.
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Kim YG, Kim M, Kang JH, Kim HJ, Park JW, Lee JM, Suh JY, Kim JY, Lee JH, Lee Y. Transcriptome sequencing of gingival biopsies from chronic periodontitis patients reveals novel gene expression and splicing patterns. Hum Genomics 2016; 10:28. [PMID: 27531006 PMCID: PMC4988046 DOI: 10.1186/s40246-016-0084-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 08/04/2016] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Periodontitis is the most common chronic inflammatory disease caused by complex interaction between the microbial biofilm and host immune responses. In the present study, high-throughput RNA sequencing was utilized to systemically and precisely identify gene expression profiles and alternative splicing. METHODS The pooled RNAs of 10 gingival tissues from both healthy and periodontitis patients were analyzed by deep sequencing followed by computational annotation and quantification of mRNA structures. RESULTS The differential expression analysis designated 400 up-regulated genes in periodontitis tissues especially in the pathways of defense/immunity protein, receptor, protease, and signaling molecules. The top 10 most up-regulated genes were CSF3, MAFA, CR2, GLDC, SAA1, LBP, MME, MMP3, MME-AS1, and SAA4. The 62 down-regulated genes in periodontitis were mainly cytoskeletal and structural proteins. The top 10 most down-regulated genes were SERPINA12, MT4, H19, KRT2, DSC1, PSORS1C2, KRT27, LCE3C, AQ5, and LCE6A. The differential alternative splicing analysis revealed unique transcription variants in periodontitis tissues. The EDB exon was predominantly included in FN1, while exon 2 was mostly skipped in BCL2A1. CONCLUSIONS These findings using RNA sequencing provide novel insights into the pathogenesis mechanism of periodontitis in terms of gene expression and alternative splicing.
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Affiliation(s)
- Yong-Gun Kim
- Department of Periodontology, School of Dentistry, Kyungpook National University, Daegu, 41940, Korea.,Institute for Hard Tissue and Bone Regeneration, Kyungpook National University, Daegu, 41940, Korea
| | - Minjung Kim
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul, 02447, Korea
| | - Ji Hyun Kang
- Department of Biochemistry, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Joong-gu, Daegu, 41940, Korea
| | - Hyo Jeong Kim
- Department of Biochemistry, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Joong-gu, Daegu, 41940, Korea
| | - Jin-Woo Park
- Department of Periodontology, School of Dentistry, Kyungpook National University, Daegu, 41940, Korea
| | - Jae-Mok Lee
- Department of Periodontology, School of Dentistry, Kyungpook National University, Daegu, 41940, Korea
| | - Jo-Young Suh
- Department of Periodontology, School of Dentistry, Kyungpook National University, Daegu, 41940, Korea
| | - Jae-Young Kim
- Institute for Hard Tissue and Bone Regeneration, Kyungpook National University, Daegu, 41940, Korea.,Department of Biochemistry, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Joong-gu, Daegu, 41940, Korea
| | - Jae-Hyung Lee
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul, 02447, Korea. .,Department of Maxillofacial Biomedical Engineering, School of Dentistry, Kyung Hee University, 26 Kyunghee-daero, Dongdaemun-gu, Seoul, 02447, Korea.
| | - Youngkyun Lee
- Institute for Hard Tissue and Bone Regeneration, Kyungpook National University, Daegu, 41940, Korea. .,Department of Biochemistry, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Joong-gu, Daegu, 41940, Korea.
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Khalid W, Vargheese SS, Lakshmanan R, Sankari M, Jayakumar ND. Role of endothelin-1 in periodontal diseases: A structured review. Indian J Dent Res 2016; 27:323-33. [PMID: 27411664 DOI: 10.4103/0970-9290.186247] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Endothelin-1 (ET-1) is a 21-amino acid peptide and is a potent vasoconstrictor produced by endothelial cells. It plays a role in the development of diseases such as hypertension and atherosclerosis. Previous studies have identified ET-1 in gingival tissues obtained from patients affected by chronic periodontitis or gingival overgrowth. Thus, there is a need to appraise the role of ET-1 in periodontal disease. MATERIALS AND METHODS The electronic search strategy included the databases such as PubMed, PubMed Central, LILACS, MEDLINE, ScienceDirect, MeSH, Cochrane database of systematic reviews, and EMBASE databases. Hand search of relevant journals was also carried out until September 2013. The included studies were both cross-sectional and longitudinal performed in vivo/in vitro, which measures the expression of ET-1 from various cells of the periodontium and in periodontal disease. Further, studies assessing the factors which influence ET-1 expression were included in the study. RESULTS A total of 15 articles were found relevant and fulfilled the inclusion criteria posed in this review. Ten studies discussed the concentration of ET-1 in periodontal disease, whereas eight studies investigated the cells expressing ET-1. Nine studies assessed the factors influencing ET-1 expression and two studies evaluated the influence of ET-1 on inflammatory mediators and other cytokines. The results suggested that ET-1 is elevated in periodontal diseases and is influenced by inflammatory cytokines and periodontal pathogens. CONCLUSION ET-1 was found to have a role in periodontal disease, but further research will be required to substantiate its use as a biomarker.
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Affiliation(s)
- Waleed Khalid
- Department of Periodontics, Saveetha Dental College and Hospitals, Chennai, Tamil Nadu, India
| | - Sheeja S Vargheese
- Department of Periodontics, Saveetha Dental College and Hospitals, Chennai, Tamil Nadu, India
| | - Reema Lakshmanan
- Department of Periodontics, Saveetha Dental College and Hospitals, Chennai, Tamil Nadu, India
| | - M Sankari
- Department of Periodontics, Saveetha Dental College and Hospitals, Chennai, Tamil Nadu, India
| | - N D Jayakumar
- Department of Periodontics, Saveetha Dental College and Hospitals, Chennai, Tamil Nadu, India
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Regulator of Calcineurin 1 in Periodontal Disease. Mediators Inflamm 2016; 2016:5475821. [PMID: 27403036 PMCID: PMC4925939 DOI: 10.1155/2016/5475821] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 04/20/2016] [Accepted: 05/05/2016] [Indexed: 11/18/2022] Open
Abstract
Nuclear factor of activated T-cells (NFAT) and NF-kB pathway associated processes are involved in the pathogenesis of various inflammatory disorders, for example, periodontal disease. The activation of these pathways is controlled by the regulator of calcineurin 1 (RCAN1). The aim of this study was to elucidate the role of RCAN1 in periodontal disease. Healthy and inflamed periodontal tissues were analyzed by immunohistochemistry and immunofluorescence using specific rabbit polyclonal anti-RCAN1 antibodies. For expression analysis human umbilical vein endothelial cells (HUVEC) were used. HUVEC were incubated for 2 h with Vascular Endothelial Growth Factor (VEGF) or with wild type and laboratory strains of Porphyromonas gingivalis (P. gingivalis). Expression analysis of rcan1 and cox2 was done by real time PCR using specific primers for rcan1.4 and cox2. The expression of rcan1 was found to be significantly suppressed in endothelial cells of chronically inflamed periodontal tissues compared to healthy controls. Rcan1 and cox2 were significantly induced by VEGF and wild type and laboratory P. gingivalis strains. Interestingly, the magnitude of the rcan1 and cox2 induction was strain dependent. The results of this study indicate that RCAN1 is suppressed in endothelial cells of chronically inflamed periodontal tissues. During an acute infection, however, rcan1 seems to be upregulated in endothelial cells, indicating a modulating role in immune homeostasis of periodontal tissues.
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Ebersole JL, Nagarajan R, Akers D, Miller CS. Targeted salivary biomarkers for discrimination of periodontal health and disease(s). Front Cell Infect Microbiol 2015; 5:62. [PMID: 26347856 PMCID: PMC4541326 DOI: 10.3389/fcimb.2015.00062] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 08/03/2015] [Indexed: 11/13/2022] Open
Abstract
UNLABELLED Generally, clinical parameters are used in dental practice for periodontal disease, yet several drawbacks exist with the clinical standards for addressing the needs of the public at large in determining the current status/progression of the disease, and requiring a significant amount of damage before these parameters can document disease. Therefore, a quick, easy and reliable method of assessing and monitoring periodontal disease should provide important diagnostic information that improves and speeds treatment decisions and moves the field closer to individualized point-of-care diagnostics. OBJECTIVE This report provides results for a saliva-based diagnostic approach for periodontal health and disease based upon the abundance of salivary analytes coincident with disease, and the significant progress already made in the identification of discriminatory salivary biomarkers of periodontitis. METHODS We evaluated biomarkers representing various phases of periodontitis initiation and progression (IL-1ß, IL-6, MMP-8, MIP-1α) in whole saliva from 209 subjects categorized with periodontal health, gingivitis, and periodontitis. RESULTS Evaluation of the salivary analytes demonstrated utility for individual biomarkers to differentiate periodontitis from health. Inclusion of gingivitis patients into the analyses provided a more robust basis to estimate the value of each of these analytes. Various clinical and statistical approaches showed that pairs or panels of the analytes were able to increase the sensitivity and specificity for the identification of disease. CONCLUSIONS Salivary concentrations of IL-1ß, IL-6, MMP-8, MIP-1α alone and in combination are able to distinguish health from gingivitis and periodontitis. The data clearly demonstrated a heterogeneity in response profiles of these analytes that supports the need for refinement of the standard clinical classifications if we are to move toward precision/personalized dentistry for the twenty-first century.
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Affiliation(s)
- Jeffrey L Ebersole
- Center for Oral Health Research, College of Dentistry, University of Kentucky Lexington, KY, USA
| | - Radhakrishnan Nagarajan
- Division of Biomedical Informatics, College of Public Health, University of Kentucky Lexington, KY, USA
| | - David Akers
- Department of Statistics, College of Arts and Sciences, University of Kentucky Lexington, KY, USA
| | - Craig S Miller
- Center for Oral Health Research, College of Dentistry, University of Kentucky Lexington, KY, USA ; Division of Oral Diagnosis, Oral Medicine and Oral Radiology, College of Dentistry, University of Kentucky Lexington, KY, USA
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Complement Involvement in Periodontitis: Molecular Mechanisms and Rational Therapeutic Approaches. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 865:57-74. [PMID: 26306443 DOI: 10.1007/978-3-319-18603-0_4] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The complement system is a network of interacting fluid-phase and cell surface-associated molecules that trigger, amplify, and regulate immune and inflammatory signaling pathways. Dysregulation of this finely balanced network can destabilize host-microbe homeostasis and cause inflammatory tissue damage. Evidence from clinical and animal model-based studies suggests that complement is implicated in the pathogenesis of periodontitis, a polymicrobial community-induced chronic inflammatory disease that destroys the tooth-supporting tissues. This review discusses molecular mechanisms of complement involvement in the dysbiotic transformation of the periodontal microbiome and the resulting destructive inflammation, culminating in loss of periodontal bone support. These mechanistic studies have additionally identified potential therapeutic targets. In this regard, interventional studies in preclinical models have provided proof-of-concept for using complement inhibitors for the treatment of human periodontitis.
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Damgaard C, Holmstrup P, Van Dyke TE, Nielsen CH. The complement system and its role in the pathogenesis of periodontitis: current concepts. J Periodontal Res 2014; 50:283-93. [PMID: 25040158 DOI: 10.1111/jre.12209] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2014] [Indexed: 12/11/2022]
Abstract
Periodontitis is a highly prevalent inflammatory disease in tooth supporting tissues, induced by bacteria growing in a biofilm on tooth surfaces. Components of the complement system are present in the periodontal tissue and the system is activated in periodontitis. Continuous complement activation and modulation by bacteria within the biofilm in periodontal pockets, however, may enhance local tissue destruction, providing the biofilm with both essential nutrients and space to grow. A more profound understanding of the mechanisms involved in complement-derived tissue degradation may facilitate the development of new treatment concepts for periodontitis. Further studies on the role of complement in periodontitis pathogenesis may also contribute to the understanding of why some individuals fail to resolve periodontitis. Here, we review evidence that links complement to the pathogenesis of periodontitis with an emphasis on interaction of complement with bacteria from periodontitis-associated biofilm.
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Affiliation(s)
- C Damgaard
- Section for Periodontology, Microbiology and Community Dentistry, Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; Department of Infectious Diseases and Rheumatology, Institute for Inflammation Research, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; Department of Applied Oral Sciences, Center for Periodontology, The Forsyth Institute, Cambridge, Massachusetts, USA
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Abstract
Periodontitis is a chronic inflammatory condition of the periodontium involving interactions between bacterial products, numerous cell populations and inflammatory mediators. It is generally accepted that periodontitis is initiated by complex and diverse microbial biofilms which form on the teeth, i.e. dental plaque. Substances released from this biofilm such as lipopolysaccharides, antigens and other virulence factors, gain access to the gingival tissue and initiate an inflammatory and immune response, leading to the activation of host defence cells. As a result of cellular activation, inflammatory mediators, including cytokines, chemokines, arachidonic acid metabolites and proteolytic enzymes collectively contribute to tissue destruction and bone resorption. This review summarises recent studies on the pathogenesis of periodontitis, with the main focus on inflammatory mediators and their role in periodontal disease.
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Hajishengallis G, Abe T, Maekawa T, Hajishengallis E, Lambris JD. Role of complement in host-microbe homeostasis of the periodontium. Semin Immunol 2013; 25:65-72. [PMID: 23684627 DOI: 10.1016/j.smim.2013.04.004] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 04/13/2013] [Indexed: 02/08/2023]
Abstract
Complement plays a key role in immunity and inflammation through direct effects on immune cells or via crosstalk and regulation of other host signaling pathways. Deregulation of these finely balanced complement activities can link infection to inflammatory tissue damage. Periodontitis is a polymicrobial community-induced chronic inflammatory disease that can destroy the tooth-supporting tissues. In this review, we summarize and discuss evidence that complement is involved in the dysbiotic transformation of the periodontal microbiota and in the inflammatory process that leads to the destruction of periodontal bone. Recent insights into the mechanisms of complement involvement in periodontitis have additionally provided likely targets for therapeutic intervention against this oral disease.
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Affiliation(s)
- George Hajishengallis
- Department of Microbiology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Hajishengallis G, Lambris JD. Complement and dysbiosis in periodontal disease. Immunobiology 2013; 217:1111-6. [PMID: 22964237 DOI: 10.1016/j.imbio.2012.07.007] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Revised: 07/13/2012] [Accepted: 07/14/2012] [Indexed: 12/16/2022]
Abstract
Signaling crosstalk between complement and Toll-like receptors (TLRs) normally serves to coordinate host immunity. However, the periodontal bacterium Porphyromonas gingivalis expresses C5 convertase-like enzymatic activity and adeptly exploits complement-TLR crosstalk to subvert host defenses and escape elimination. Intriguingly, this defective immune surveillance leads to the remodeling of the periodontal microbiota to a dysbiotic state that causes inflammatory periodontitis. Understanding the mechanisms by which P. gingivalis modulates complement function to cause dysbiosis offers new targets for complement therapeutics.
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Affiliation(s)
- George Hajishengallis
- University of Pennsylvania School of Dental Medicine, Department of Microbiology, Philadelphia, PA 19104, USA.
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Marconcini S. Letter to the Editor: Authors’ Response. J Periodontol 2013; 84:276-7. [DOI: 10.1902/jop.2013.120209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Complement-targeted therapeutics in periodontitis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 735:197-206. [PMID: 23402028 DOI: 10.1007/978-1-4614-4118-2_13] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Periodontitis is a prevalent oral chronic inflammatory disease which, in severe forms, may exert a major impact on systemic health. Clinical and histological observations, as well as experimental animal studies, suggest involvement of the complement system in periodontitis. However, the precise roles of the various complement components and pathways in periodontitis have only recently started to be elucidated. In this chapter, we review recent progress in the field and discuss the potential of complement-targeted therapeutics in the treatment of periodontitis.
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Zhang J, Wu L, Qu JM, Bai CX, Merrilees MJ, Black PN. Pro-inflammatory phenotype of COPD fibroblasts not compatible with repair in COPD lung. J Cell Mol Med 2012; 16:1522-32. [PMID: 22117690 PMCID: PMC3823220 DOI: 10.1111/j.1582-4934.2011.01492.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is characterized by loss of elastic fibres from small airways and alveolar walls, with the decrease in elastin increasing with disease severity. It is unclear why there is a lack of repair of elastic fibres. We have examined fibroblasts cultured from lung tissue from subjects with or without COPD to determine if the secretory profile explains lack of tissue repair. In this study, fibroblasts were cultured from lung parenchyma of patients with mild COPD [Global initiative for chronic Obstructive Lung Disease (GOLD) 1, n= 5], moderate to severe COPD (GOLD 2–3, n= 12) and controls (non-COPD, n= 5). Measurements were made of proliferation, senescence-associated β-galactosidase-1, mRNA expression of IL-6, IL-8, MMP-1, tropoelastin and versican, and protein levels for IL-6, IL-8, PGE2, tropoelastin, insoluble elastin, and versican. GOLD 2–3 fibroblasts proliferated more slowly (P < 0.01), had higher levels of senescence-associated β-galactosidase-1 (P < 0.001) than controls and showed significant increases in mRNA and/or protein for IL-6 (P < 0.05), IL-8 (P < 0.01), MMP-1 (P < 0.05), PGE2 (P < 0.05), versican (P < 0.05) and tropoelastin (P < 0.05). mRNA expression and/or protein levels of tropoelastin (P < 0.01), versican (P < 0.05), IL-6 (P < 0.05) and IL-8 (P < 0.05) were negatively correlated with FEV1% of predicted. Insoluble elastin was not increased. In summary, fibroblasts from moderate to severe COPD subjects display a secretory phenotype with up-regulation of inflammatory molecules including the matrix proteoglycan versican, and increased soluble, but not insoluble, elastin. Versican inhibits assembly of tropoelastin into insoluble elastin and we conclude that the pro-inflammatory phenotype of COPD fibroblasts is not compatible with repair of elastic fibres.
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Affiliation(s)
- Jing Zhang
- Department of Pulmonary Medicine, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
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Davanian H, Stranneheim H, Båge T, Lagervall M, Jansson L, Lundeberg J, Yucel-Lindberg T. Gene expression profiles in paired gingival biopsies from periodontitis-affected and healthy tissues revealed by massively parallel sequencing. PLoS One 2012; 7:e46440. [PMID: 23029519 PMCID: PMC3460903 DOI: 10.1371/journal.pone.0046440] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 08/30/2012] [Indexed: 12/21/2022] Open
Abstract
Periodontitis is a chronic inflammatory disease affecting the soft tissue and bone that surrounds the teeth. Despite extensive research, distinctive genes responsible for the disease have not been identified. The objective of this study was to elucidate transcriptome changes in periodontitis, by investigating gene expression profiles in gingival tissue obtained from periodontitis-affected and healthy gingiva from the same patient, using RNA-sequencing. Gingival biopsies were obtained from a disease-affected and a healthy site from each of 10 individuals diagnosed with periodontitis. Enrichment analysis performed among uniquely expressed genes for the periodontitis-affected and healthy tissues revealed several regulated pathways indicative of inflammation for the periodontitis-affected condition. Hierarchical clustering of the sequenced biopsies demonstrated clustering according to the degree of inflammation, as observed histologically in the biopsies, rather than clustering at the individual level. Among the top 50 upregulated genes in periodontitis-affected tissues, we investigated two genes which have not previously been demonstrated to be involved in periodontitis. These included interferon regulatory factor 4 and chemokine (C-C motif) ligand 18, which were also expressed at the protein level in gingival biopsies from patients with periodontitis. In conclusion, this study provides a first step towards a quantitative comprehensive insight into the transcriptome changes in periodontitis. We demonstrate for the first time site-specific local variation in gene expression profiles of periodontitis-affected and healthy tissues obtained from patients with periodontitis, using RNA-seq. Further, we have identified novel genes expressed in periodontitis tissues, which may constitute potential therapeutic targets for future treatment strategies of periodontitis.
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Affiliation(s)
- Haleh Davanian
- Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden.
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Anti-inflammatory changes of gene expression by Artemisia iwayomogi in the LPS-stimulated human gingival fibroblast: Microarray analysis. Arch Pharm Res 2012; 35:549-63. [DOI: 10.1007/s12272-012-0319-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Revised: 08/23/2011] [Accepted: 08/24/2011] [Indexed: 11/27/2022]
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Mouzakiti E, Pepelassi E, Fanourakis G, Markopoulou C, Tseleni-Balafouta S, Vrotsos I. Expression of MMPs and TIMP-1 in smoker and nonsmoker chronic periodontitis patients before and after periodontal treatment. J Periodontal Res 2012; 47:532-42. [DOI: 10.1111/j.1600-0765.2011.01465.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Garzón I, Roa A, Moreu G, Oliveira AC, Roda O, Alfonso-Rodríguez CA, González-Jaranay M, Sánchez-Quevedo MDC, Alaminos M. Development of a diagnostic algorithm in periodontal disease and identification of genetic expression patterns: A preliminary report. J Dent Sci 2012. [DOI: 10.1016/j.jds.2012.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Stringer B, Udofa EA, Antalis TM. Regulation of the human plasminogen activator inhibitor type 2 gene: cooperation of an upstream silencer and transactivator. J Biol Chem 2012; 287:10579-10589. [PMID: 22334683 DOI: 10.1074/jbc.m111.318758] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Transcriptional up-regulation of the plasminogen activator inhibitor type-2 (PAI-2) gene is a major response to cellular stress. The expression of PAI-2 is induced by a variety of cytokines and growth factors that act in a cell type- and differentiation stage-dependent manner. We previously reported that the human SERPINB2 gene promoter is controlled by three major transcription regulatory domains: an inducible proximal promoter, an upstream silencer (PAUSE-1), and a distal transactivator region between -5100 and -3300, which appears to overcome inhibition mediated by the silencer. The distal transactivator region is inducible by the phorbol ester PMA, a potent activator of the protein kinase C (PKC) pathway that is a powerful inducer of PAI-2 gene expression in monocytes, macrophages, and myelomonocytic cells as well as in epidermal keratinocytes. Here we show that a 21-bp region (-4952/-4932), containing an AP-1 element, is both necessary and sufficient for PMA-induced transactivator activity in PAI-2-expressing U937 cells. This site specifically binds FosB in PAI-2-expressing U937 cells but not in HeLa cells that do not express PAI-2, and overexpression of FosB, c-Fos, or c-Jun in HeLa cells is sufficient to cause derepression of transcription from the SERPINB2 promoter. Although FosB is likely to be involved in transactivator-mediated derepression of PAI-2 transcription in macrophage-like cells, as exemplified by the U937 cell line, c-Jun may be functional in other cell types. These data suggest a model for the transcriptional control of the human PAI-2 gene and further our understanding of the molecular basis for its tissue-specific expression.
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Affiliation(s)
- Brett Stringer
- University of Queensland and Queensland Institute of Medical Research, Brisbane, Queensland 4029, Australia
| | - Ekemini A Udofa
- Center for Vascular and Inflammatory Diseases and Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland 21201 and
| | - Toni M Antalis
- Center for Vascular and Inflammatory Diseases and Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland 21201 and.
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Mouzakiti E, Pepelassi E, Fanourakis G, Markopoulou C, Tseleni-Balafouta S, Vrotsos I. The effect of smoking on the mRNA expression of MMPs and TIMP-1 in untreated chronic periodontitis patients: a cross-sectional study. J Periodontal Res 2011; 46:576-83. [PMID: 21732946 DOI: 10.1111/j.1600-0765.2011.01375.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE Matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs) are important for extracellular matrix. Expression of MMPs has been evaluated in gingiva without studying smoking. The aim of this study was to explore the effect of smoking on mRNA expression of MMP-1, -3, -8, -9 and -13 and TIMP-1 in untreated chronic periodontitis and in periodontal health. MATERIAL AND METHODS Gingival samples were harvested from 30 subjects with untreated chronic periodontitis (15 nonsmokers and 15 smokers) and 30 periodontally healthy subjects (15 nonsmokers and 15 smokers). Full-mouth plaque score, gingival index, bleeding on probing, probing depth and clinical attachment level were recorded. Total RNA was isolated, and the mRNA expression of MMPs and TIMP-1 was assessed by RT-PCR. RESULTS Periodontitis groups were comparable in clinical measurements. Nonsmoker subjects with periodontitis had statistically significantly higher MMP-1, lower MMP-9 and TIMP-1 expression and higher MMP-1/TIMP-1 ratio than smokers; and higher MMP-8 expression and MMP-8/TIMP-1 and MMP-1/TIMP-1 ratios than healthy nonsmokers. Healthy nonsmokers had statistically significantly higher MMP-13 expression than healthy smokers. Smoker periodontitis and healthy subjects had similar expression levels of MMPs and TIMP-1 and MMPs/TIMP-1 ratios. There was correlation among the MMPs only for smoker periodontitis subjects. Expression of MMP-13 was correlated with mean clinical attachment level. CONCLUSION Within its limits, this study demonstrated that smoking affected mRNA expression of MMPs and TIMP-1, MMPs/TIMP-1 ratios and relationships among MMPs in untreated chronic periodontitis and expression of MMPs in health. In the absence of smoking, chronic periodontitis affected expression of MMPs and MMPs/TIMP-1 ratios.
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Affiliation(s)
- E Mouzakiti
- Department of Periodontology, School of Dentistry, University of Athens, Greece.
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Grant MM. What do 'omic technologies have to offer periodontal clinical practice in the future? J Periodontal Res 2011; 47:2-14. [PMID: 21679186 DOI: 10.1111/j.1600-0765.2011.01387.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE Periodontal diseases are the most common chronic inflammatory diseases of humans and a major cause of tooth loss. Inflammatory periodontitis is also a complex multifactorial disease involving many cell types, cell products and interactions. It is associated with a dysregulated inflammatory response, which fails to resolve, and which also fails to re-establish a beneficial periodontal microbiota. There is a rich history of biomarker research within the field of periodontology, but exemplary improvements in analytical platform technologies offer exciting opportunities for discovery. These include the 'omic technologies, such as genomics, transcriptomics, proteomics and metabolomics, which provide information on global scales that can match the complexity of the disease. This narrative review focuses on the recent advances made in in vivo human periodontal research by use of 'omic technologies. MATERIAL AND METHODS The Medline database was searched to identify articles currently available on 'omic technologies with regard to periodontal research. RESULTS One hundred and sixty-one articles focusing on biomarkers of and 'omic advances in periodontal research were analysed for their contributions to the understanding of periodontal diseases. CONCLUSION The data generated by the use of 'omic technologies have huge potential to inform paradigm shifts in our understanding of periodontal diseases, but data management, analysis and interpretation require a thoughtful and systematic bioinformatics approach, to ensure meaningful conclusions can be made.
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Affiliation(s)
- M M Grant
- Periodontal Research Group, School of Dentistry, University of Birmingham, St Chad's Queensway, Birmingham, UK.
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Abe D, Kubota T, Morozumi T, Shimizu T, Nakasone N, Itagaki M, Yoshie H. Altered gene expression in leukocyte transendothelial migration and cell communication pathways in periodontitis-affected gingival tissues. J Periodontal Res 2011; 46:345-53. [PMID: 21382035 DOI: 10.1111/j.1600-0765.2011.01349.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND AND OBJECTIVE Gene expression is related to the pathogenesis of periodontitis and plays a crucial role in local tissue destruction and disease susceptibility. The aims of the present study were to identify the expression of specific genes and biological pathways in periodontitis-affected gingival tissue using microarray and quantitative real-time RT-PCR analyses. MATERIAL AND METHODS Healthy and periodontitis-affected gingival tissues were taken from three patients with severe chronic periodontitis. Total RNAs from six gingival tissue samples were used for microarray analyses. Data-mining analyses, such as comparisons, gene ontology and pathway analyses, were performed and biological pathways with a significant role in periodontitis were identified. In addition, quantitative real-time RT-PCR analysis was performed on samples obtained from 14 patients with chronic periodontitis and from 14 healthy individuals in order to confirm the results of the pathway analysis. RESULTS Comparison analyses found 15 up-regulated and 13 down-regulated genes (all of which showed a change of more than twofold in expression levels) in periodontitis-affected gingival tissues. Pathway analysis identified 15 up-regulated biological pathways, including leukocyte transendothelial migration, and five down-regulated pathways, including cell communication. Quantitative real-time RT-PCR verified that five genes in the leukocyte transendothelial migration pathway were significantly up-regulated, and four genes in the cell communication pathway were significantly down-regulated, which was consistent with pathway analysis. CONCLUSION We identified up-regulated genes (ITGB-2, MMP-2, CXCL-12, CXCR-4 and Rac-2) and down-regulated genes (connexin, DSG-1, DSC-1 and nestin) in periodontitis-affected gingival tissues; these genes may be related to the stimulation of leukocyte transendothelial migration and to the the impairment of cell-to-cell communication in periodontitis.
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Affiliation(s)
- D Abe
- Division of Periodontology, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Japan
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Båge T, Kats A, Lopez BS, Morgan G, Nilsson G, Burt I, Korotkova M, Corbett L, Knox AJ, Pino L, Jakobsson PJ, Modéer T, Yucel-Lindberg T. Expression of prostaglandin E synthases in periodontitis immunolocalization and cellular regulation. THE AMERICAN JOURNAL OF PATHOLOGY 2011. [PMID: 21435451 DOI: 10.1016/j.ajpath.2010.1612.1048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
The inflammatory mediator prostaglandin E(2) (PGE(2)) is implicated in the pathogenesis of chronic inflammatory diseases including periodontitis; it is synthesized by cyclooxygenases (COX) and the prostaglandin E synthases mPGES-1, mPGES-2, and cPGES. The distribution of PGES in gingival tissue of patients with periodontitis and the contribution of these enzymes to inflammation-induced PGE(2) synthesis in different cell types was investigated. In gingival biopsies, positive staining for PGES was observed in fibroblasts and endothelial, smooth muscle, epithelial, and immune cells. To further explore the contribution of PGES to inflammation-induced PGE(2) production, in vitro cell culture experiments were performed using fibroblasts and endothelial, smooth muscle, and mast cells. All cell types expressed PGES and COX-2, resulting in basal levels of PGE(2) synthesis. In response to tumor necrosis factor (TNF-α), IL-1β, and cocultured lymphocytes, however, mPGES-1 and COX-2 protein expression increased in fibroblasts and smooth muscle cells, accompanied by increased PGE(2), whereas mPGES-2 and cPGES were unaffected. In endothelial cells, TNF-α increased PGE(2) production only via COX-2 expression, whereas in mast cells the cytokines did not affect PGE(2) enzyme expression or PGE(2) production. Furthermore, PGE(2) production was diminished in gingival fibroblasts derived from mPGES-1 knockout mice, compared with wild-type fibroblasts. These results suggest that fibroblasts and smooth muscle cells are important sources of mPGES-1, which may contribute to increased PGE(2) production in the inflammatory condition periodontitis.
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Affiliation(s)
- Tove Båge
- Division of Pediatric Dentistry, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
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Båge T, Kats A, Lopez BS, Morgan G, Nilsson G, Burt I, Korotkova M, Corbett L, Knox AJ, Pino L, Jakobsson PJ, Modéer T, Yucel-Lindberg T. Expression of prostaglandin E synthases in periodontitis immunolocalization and cellular regulation. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 178:1676-88. [PMID: 21435451 PMCID: PMC3078457 DOI: 10.1016/j.ajpath.2010.12.048] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Revised: 12/10/2010] [Accepted: 12/22/2010] [Indexed: 12/17/2022]
Abstract
The inflammatory mediator prostaglandin E(2) (PGE(2)) is implicated in the pathogenesis of chronic inflammatory diseases including periodontitis; it is synthesized by cyclooxygenases (COX) and the prostaglandin E synthases mPGES-1, mPGES-2, and cPGES. The distribution of PGES in gingival tissue of patients with periodontitis and the contribution of these enzymes to inflammation-induced PGE(2) synthesis in different cell types was investigated. In gingival biopsies, positive staining for PGES was observed in fibroblasts and endothelial, smooth muscle, epithelial, and immune cells. To further explore the contribution of PGES to inflammation-induced PGE(2) production, in vitro cell culture experiments were performed using fibroblasts and endothelial, smooth muscle, and mast cells. All cell types expressed PGES and COX-2, resulting in basal levels of PGE(2) synthesis. In response to tumor necrosis factor (TNF-α), IL-1β, and cocultured lymphocytes, however, mPGES-1 and COX-2 protein expression increased in fibroblasts and smooth muscle cells, accompanied by increased PGE(2), whereas mPGES-2 and cPGES were unaffected. In endothelial cells, TNF-α increased PGE(2) production only via COX-2 expression, whereas in mast cells the cytokines did not affect PGE(2) enzyme expression or PGE(2) production. Furthermore, PGE(2) production was diminished in gingival fibroblasts derived from mPGES-1 knockout mice, compared with wild-type fibroblasts. These results suggest that fibroblasts and smooth muscle cells are important sources of mPGES-1, which may contribute to increased PGE(2) production in the inflammatory condition periodontitis.
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Affiliation(s)
- Tove Båge
- Division of Pediatric Dentistry, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Anna Kats
- Division of Pediatric Dentistry, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Blanca Silva Lopez
- Division of Pediatric Dentistry, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Gareth Morgan
- Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Gunnar Nilsson
- Clinical Immunology and Allergy Unit, Karolinska Institutet, Stockholm, Sweden
| | - Idil Burt
- Department of Orthodontics, Eastman Institute, Stockholm, Sweden
| | | | - Lisa Corbett
- Division of Respiratory Medicine, City Hospital, University of Nottingham, Nottingham, United Kingdom
| | - Alan J. Knox
- Division of Respiratory Medicine, City Hospital, University of Nottingham, Nottingham, United Kingdom
| | - Leonardo Pino
- Örebro City Council, Postgraduate Dental Education Center, Örebro, Sweden
| | | | - Thomas Modéer
- Division of Pediatric Dentistry, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Tülay Yucel-Lindberg
- Division of Pediatric Dentistry, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
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Chiappelli F, Covani U, Giacomelli L. Proteomics as it pertains to oral pathologies and dental research. Bioinformation 2011; 5:277. [PMID: 21364833 PMCID: PMC3043345 DOI: 10.6026/97320630005277] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Accepted: 12/29/2011] [Indexed: 11/23/2022] Open
Affiliation(s)
| | - Ugo Covani
- Tirrenian Stomatologic Institute, Lido di Camaiore (Lucca), Italy
| | - Luca Giacomelli
- Tirrenian Stomatologic Institute, Lido di Camaiore (Lucca), Italy
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Giacomelli L, Covani U. Bioinformatics and Data Mining Studies in Oral Genomics and Proteomics: New Trends and Challenges. Open Dent J 2010. [DOI: 10.2174/1874210601004010067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Genomics and proteomics have promised to change the practice of dentistry and oral pathology, allowing the identification and the characterization of risk factors and therapeutic targets at a molecular level. However, mass-scale molecular genomics and proteomics suffer from some pitfalls: gene/protein expression are significant only if inserted in a detailed network of molecular pathways and gene/gene, gene/protein and protein/protein interactions.The proper analysis of these complex pictures requires the contribution of theoretical disciplines, like bioinformatics and data mining. In particular, data-mining of existing information could become a strong starting point to formulate new targeted hypotheses and to planad hocexperimentation.In this review, advantages and disadvantages of the above-mentioned disciplines and their potential in oral pathology are discussed. The leader gene approach is a new data mining algorithm, recently applied to some oral diseases and their correlation with systemic conditions. The preliminary results of the application of the leader gene approach to the correlation between periodontitis and heart ischemia at a molecular level are presented for the first time.
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