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Jirasek P, Jusku A, Frankova J, Urbankova M, Diabelko D, Ruzicka F, Papouskova B, Chytilova K, Vrba J, Havlasek J, Langova K, Storch J, Voborna I, Simanek V, Vacek J. Phytocannabinoids and gingival inflammation: Preclinical findings and a placebo-controlled double-blind randomized clinical trial with cannabidiol. J Periodontal Res 2024; 59:468-479. [PMID: 38311974 DOI: 10.1111/jre.13234] [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: 03/23/2023] [Revised: 12/01/2023] [Accepted: 12/07/2023] [Indexed: 02/06/2024]
Abstract
OBJECTIVE The aim of this study was to: (1) evaluate the anti-inflammatory effects of cannabidiol (CBD) on primary cultures of human gingival fibroblasts (HGFs) and (2) to clinically monitor the effect of CBD in subjects with periodontitis. BACKGROUND The use of phytocannabinoids is a new approach in the treatment of widely prevalent periodontal disease. MATERIALS AND METHODS Cannabinoid receptors were analyzed by western blot and interleukin production detected using enzyme immunoassay. Activation of the Nrf2 pathway was studied via monitoring the mRNA level of heme oxygenase-1. Antimicrobial effects were determined by standard microdilution and 16S rRNA screening. In the clinical part, a placebo-control double-blind randomized study was conducted (56 days) in three groups (n = 90) using dental gel without CBD (group A) and with 1% (w/w) CBD (group B) and corresponding toothpaste (group A - no CBD, group B - with CBD) for home use to maintain oral health. Group C used dental gel containing 1% chlorhexidine digluconate (active comparator) and toothpaste without CBD. RESULTS Human gingival fibroblasts were confirmed to express the cannabinoid receptor CB2. Lipopolysaccharide-induced cells exhibited increased production of pro-inflammatory IL-6 and IL-8, with deceasing levels upon exposure to CBD. CBD also exhibited antimicrobial activities against Porphyromonas gingivalis, with an MIC of 1.5 μg/mL. Activation of the Nrf2 pathway was also demonstrated. In the clinical part, statistically significant improvement was found for the gingival, gingival bleeding, and modified gingival indices between placebo group A and CBD group B after 56 days. CONCLUSIONS Cannabidiol reduced inflammation and the growth of selected periodontal pathogenic bacteria. The clinical trial demonstrated a statistically significant improvement after CBD application. No adverse effects of CBD were reported by patients or observed upon clinical examination during the study. The results are a promising basis for a more comprehensive investigation of the application of non-psychotropic cannabinoids in dentistry.
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Affiliation(s)
- Petr Jirasek
- Institute of Dentistry and Oral Sciences, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
- Institute of Dentistry and Oral Sciences, University Hospital Olomouc, Olomouc, Czech Republic
| | - Alexandr Jusku
- Institute of Dentistry and Oral Sciences, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
- Institute of Dentistry and Oral Sciences, University Hospital Olomouc, Olomouc, Czech Republic
| | - Jana Frankova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Marketa Urbankova
- Department of Clinical and Molecular Pathology, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Daniel Diabelko
- Department of Microbiology, Faculty of Medicine of Masaryk University and St. Anne's University Hospital, Brno, Czech Republic
| | - Filip Ruzicka
- Department of Microbiology, Faculty of Medicine of Masaryk University and St. Anne's University Hospital, Brno, Czech Republic
| | - Barbora Papouskova
- Department of Analytical Chemistry, Faculty of Science, Palacky University, Olomouc, Czech Republic
| | - Karin Chytilova
- Department of Oral and Maxillofacial Surgery, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Jiri Vrba
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Jakub Havlasek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Katerina Langova
- Department of Medical Biophysics, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Olomouc, Czech Republic
| | - Jan Storch
- Department of Advanced Materials and Organic Synthesis, Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Prague, Czech Republic
| | - Iva Voborna
- Institute of Dentistry and Oral Sciences, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
- Institute of Dentistry and Oral Sciences, University Hospital Olomouc, Olomouc, Czech Republic
| | - Vilim Simanek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
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Kianfar S, Salimi V, Jahangirifard A, Mirtajani SB, Vaezi MA, Yavarian J, Mokhtari-Azad T, Tavakoli-Yaraki M. 15-lipoxygenase and cyclooxygenase expression profile and their related modulators in COVID-19 infection. Prostaglandins Leukot Essent Fatty Acids 2023; 197:102587. [PMID: 37716021 DOI: 10.1016/j.plefa.2023.102587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 08/13/2023] [Accepted: 08/30/2023] [Indexed: 09/18/2023]
Abstract
BACKGROUND The role of the lipoxygenase (LOX) and cyclooxygenase (COX) enzymes in maintaining cellular homeostasis and regulating immune responses promoted us in this study to analyze the pattern of changes in 15-lipoxygenase and cyclooxygenase isoforms and their related cytokines in SARS-CoV-2 infection. METHODS 15-LOX-1, 15-LOX-2, COX-1 and COX-2 gene expression levels were determined using qRT-PCR in nasopharynx specimens from patients with severe [N = 40] and non-severe [N = 40] confirmed SARS-CoV-2 infections and healthy controls. Circulating levels of lL-6, lL-10, PGE2, and IFN-γ were measured in patients and healthy controls using ELISA assay. The associations between the measured variables and the patient's clinic-pathological characteristics were assessed for all groups. RESULTS The expression level of 15-LOX-1 was elevated significantly in male patients with severe infection; although female patients showed a different expression profile. 15-LOX-2 expression level was considerably increased in male patients with severe infection; while changes in its expression remained inconclusive in female patients. The relationship between 15-LOX expression and the male gender was prominent. Both COX isoforms expression showed elevation in male and female patients that were correlated with disease severity. The simultaneous increase in lL-6, PGE2 and IFN-γ levels also decrease in lL-10 in patients with severe infection indicating the possible regulatory network related to the COX and 15-LOX enzymes in the output of the SARS-CoV-2 infection. CONCLUSION The results of this study determined the pattern of possible changes in key enzymes of prostaglandin and eicosanoids synthesis pathway and their mediators, which can be helpful in mapping the SARS-CoV-2 pathogenicity and pharmaceutical approaches.
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Affiliation(s)
- Sara Kianfar
- Bahrami Children Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Vahid Salimi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Jahangirifard
- Lung Transplant Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Bashir Mirtajani
- Lung Transplant Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Amin Vaezi
- Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Jila Yavarian
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Research Center for Antibiotic Stewardship & Antimicrobial Resistance, Tehran university of Medical Sciences, Tehran, Iran
| | - Talat Mokhtari-Azad
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Masoumeh Tavakoli-Yaraki
- Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
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Chen JS, Alfajaro MM, Chow RD, Wei J, Filler RB, Eisenbarth SC, Wilen CB. Non-steroidal anti-inflammatory drugs dampen the cytokine and antibody response to SARS-CoV-2 infection. J Virol 2021; 95:JVI.00014-21. [PMID: 33441348 PMCID: PMC8092681 DOI: 10.1128/jvi.00014-21] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 01/11/2021] [Indexed: 12/15/2022] Open
Abstract
Identifying drugs that regulate severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and its symptoms has been a pressing area of investigation during the coronavirus disease 2019 (COVID-19) pandemic. Nonsteroidal anti-inflammatory drugs (NSAIDs), which are frequently used for the relief of pain and inflammation, could modulate both SARS-CoV-2 infection and the host response to the virus. NSAIDs inhibit the enzymes cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2), which mediate the production of prostaglandins (PGs). As PGs play diverse biological roles in homeostasis and inflammatory responses, inhibiting PG production with NSAIDs could affect COVID-19 pathogenesis in multiple ways, including: (1) altering susceptibility to infection by modifying expression of angiotensin-converting enzyme 2 (ACE2), the cell entry receptor for SARS-CoV-2; (2) regulating replication of SARS-CoV-2 in host cells; and (3) modulating the immune response to SARS-CoV-2. Here, we investigate these potential roles. We demonstrate that SARS-CoV-2 infection upregulates COX-2 in diverse human cell culture and mouse systems. However, suppression of COX-2 by two commonly used NSAIDs, ibuprofen and meloxicam, had no effect on ACE2 expression, viral entry, or viral replication. In contrast, in a mouse model of SARS-CoV-2 infection, NSAID treatment reduced production of pro-inflammatory cytokines and impaired the humoral immune response to SARS-CoV-2 as demonstrated by reduced neutralizing antibody titers. Our findings indicate that NSAID treatment may influence COVID-19 outcomes by dampening the inflammatory response and production of protective antibodies rather than modifying susceptibility to infection or viral replication.ImportancePublic health officials have raised concerns about the use of nonsteroidal anti-inflammatory drugs (NSAIDs) for treating symptoms of coronavirus disease 2019 (COVID-19). NSAIDs inhibit the enzymes cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2), which are critical for the generation of prostaglandins - lipid molecules with diverse roles in homeostasis and inflammation. Inhibition of prostaglandin production by NSAIDs could therefore have multiple effects on COVID-19 pathogenesis. Here, we demonstrate that NSAID treatment reduced both the antibody and pro-inflammatory cytokine response to SARS-CoV-2 infection. The ability of NSAIDs to modulate the immune response to SARS-CoV-2 infection has important implications for COVID-19 pathogenesis in patients. Whether this occurs in humans and whether it is beneficial or detrimental to the host remains an important area of future investigation. This also raises the possibility that NSAIDs may alter the immune response to SARS-CoV-2 vaccination.
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Affiliation(s)
- Jennifer S Chen
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT, USA
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Mia Madel Alfajaro
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT, USA
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Ryan D Chow
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Jin Wei
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT, USA
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Renata B Filler
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT, USA
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Stephanie C Eisenbarth
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT, USA
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Craig B Wilen
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT, USA
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
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Xiao A, Wu C, Kuang L, Lu W, Zhao X, Kuang Z, Hao N. Effect of Zhongyi paste on inflammatory pain in mice by regulation of the extracellular regulated protein kinases 1/2-cyclooxygenase-2-prostaglandin E 2 pathway. Korean J Pain 2020; 33:335-343. [PMID: 32989198 PMCID: PMC7532292 DOI: 10.3344/kjp.2020.33.4.335] [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: 06/25/2020] [Revised: 08/19/2020] [Accepted: 08/19/2020] [Indexed: 12/01/2022] Open
Abstract
Background Zhongyi paste is a traditional Chinese medicine herbal paste that is externally applied to reduce inflammation and relieve pain. Methods An acute foot swelling inflammation model in C57BL/6J mice was established by carrageenan-induced pathogenesis. Zhongyi paste raised the pain threshold and also reduced the degree of swelling in mice with carrageenan-induced foot swelling. Results Analysis indicated that serum tumor necrosis factor-alpha, interleukin-1 beta, and prostaglandin E2 (PGE2) cytokine levels and PGE2 levels in the paw tissue of the mice were decreased by Zhongyi paste treatment. The quantitative polymerase chain reaction and western blot results showed that Zhongyi paste downregulated the mRNA and protein expression of extracellular signal-regulated kinase 1/2 (ERK1/2), and cyclooxygenase-2 (COX-2), and also downregulated the mRNA expression of PGE2. At the same time, the Zhongyi paste exerted a stronger effect as an external drug than that of indomethacin, which is an oral drug, and voltaren, which is an externally applied drug. Conclusions Our results indicated that Zhongyi paste is a very effective drug to reduce inflammatory swelling of the foot, and its mechanism of action is related to regulation of the ERK1/2–COX-2–PGE2 pathway.
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Affiliation(s)
- Ailan Xiao
- The First Department of Orthopaedic Surgery, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
| | - Chuncao Wu
- Office of Academic Research, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
| | - Lei Kuang
- The First Department of Orthopaedic Surgery, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
| | - Weizhong Lu
- The First Department of Orthopaedic Surgery, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
| | - Xin Zhao
- Chongqing Collaborative Innovation Center for Functional Food, Chongqing University of Education, Chongqing, China
| | - Zhiping Kuang
- The First Department of Orthopaedic Surgery, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
| | - Na Hao
- The First Department of Orthopaedic Surgery, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
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Interleukin 1β and Prostaglandin E2 affect expression of DNA methylating and demethylating enzymes in human gingival fibroblasts. Int Immunopharmacol 2019; 78:105920. [PMID: 31810887 DOI: 10.1016/j.intimp.2019.105920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 08/28/2019] [Accepted: 09/15/2019] [Indexed: 02/06/2023]
Abstract
Periodontitis is a common chronic inflammatory condition that results in increased levels of inflammatory cytokines and inflammatory mediators. In addition to oral disease and tooth loss, it also causes low-grade systemic inflammation that contributes to development of systemic conditions including cardiovascular disease, pre-term birth, diabetes and cancer. Chronic inflammation is associated with epigenetic change, and it has been suggested that such changes can alter cell phenotypes in ways that contribute to both ongoing inflammation and development of associated pathologies. Here we show that exposure of human gingival fibroblasts to IL-1β increases expression of maintenance methyltransferase DNMT1 but decreases expression of de novo methyltransferase DNMT3a and the demethylating enzyme TET1, while exposure to PGE2 decreases expression of all three enzymes. IL-1β and PGE2 both affect global levels of DNA methylation and hydroxymethylation, as well as methylation of some specific CpG in inflammation-associated genes. The effects of IL-1β are independent of its ability to induce production of PGE2, and the effects of PGE2 on DNMT3a expression are mediated by the EP4 receptor. The finding that exposure of fibroblasts to IL-1β and PGE2 can result in altered expression of DNA methylating/demethylating enzymes and in changing patterns of DNA methylation suggests a mechanism through which inflammatory mediators might contribute to the increased risk of carcinogenesis associated with inflammation.
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Moro MG, Oliveira MDDS, Oliveira LRD, Teixeira SA, Muscará MN, Spolidorio LC, Holzhausen M. Effects of Selective Versus Non-Selective COX-2 Inhibition on Experimental Periodontitis. Braz Dent J 2019; 30:133-138. [PMID: 30970055 DOI: 10.1590/0103-6440201902241] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 10/15/2018] [Indexed: 11/21/2022] Open
Abstract
In the present study we compared the effects of the selective COX-2 inhibitor etoricoxib with those of the classical non-selective NSAID diclofenac on the inflammatory process and alveolar bone loss in an experimental model of periodontitis in rats. Ninety male Holtzman rats (250 g) were randomly sorted into four experimental groups: Sham+CMC and Ligature+CMC (control) groups which received 0.5% carboxymethylcellulose sodium (CMC) solution; Ligature+Diclofenac and Ligature+Etoricoxib groups which received Potassium Diclofenac and Etoricoxib, respectively, suspended in 0.5% CMC (10 mg/kg/day). At 7, 14 and 21 days after placing ligatures in the cervical region of both the lower right and left first molars, the animals were euthanized. At the end of each period, the mandibles were collected for radiographic examination of alveolar bone loss. In addition, alveolar bone and periodontal ligament tissue samples were collected for COX-2 expression analysis and gingival tissues were collected for measurement of PGE2 contents. Animals with ligature-induced periodontal disease showed significant increased COX-2 gene expression at days 7, 14 and 21 (p<0.05) on alveolar bone and periodontal ligament. However, both treatments resulted in significantly reduced alveolar bone loss when compared to the untreated Ligature group (p<0.05), with no statistical difference between Etoricoxib and Diclofenac Potassium groups. This study shows that both drugs were able to reduce alveolar bone loss after periodontal disease induction.
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Affiliation(s)
- Marcella Goetz Moro
- Department of Stomatology, Discipline of Periodontology, School of Dentistry, USP - Universidade de São Paulo, São Paulo, SP, Brazil
| | | | - Leticia Rodrigues de Oliveira
- Department of Stomatology, Discipline of Periodontology, School of Dentistry, USP - Universidade de São Paulo, São Paulo, SP, Brazil
| | - Simone Aparecida Teixeira
- Department of Pharmacology, Institute of Biomedical Sciences, USP - Universidade de São Paulo, São Paulo, SP, Brazil
| | - Marcelo Nicolas Muscará
- Department of Pharmacology, Institute of Biomedical Sciences, USP - Universidade de São Paulo, São Paulo, SP, Brazil
| | - Luis Carlos Spolidorio
- Department of Oral Pathology, Dental School of Araraquara, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil
| | - Marinella Holzhausen
- Department of Stomatology, Discipline of Periodontology, School of Dentistry, USP - Universidade de São Paulo, São Paulo, SP, Brazil
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Yin J, Xia W, Zhang Y, Ding G, Chen L, Yang G, Huang S, Jia Z, Zhang A. Role of dihydroartemisinin in regulating prostaglandin E2 synthesis cascade and inflammation in endothelial cells. Heart Vessels 2018; 33:1411-1422. [DOI: 10.1007/s00380-018-1190-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Accepted: 05/18/2018] [Indexed: 10/16/2022]
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Asa'ad F, Bollati V, Pagni G, Castilho RM, Rossi E, Pomingi F, Tarantini L, Consonni D, Giannobile WV, Rasperini G. Evaluation of DNA methylation of inflammatory genes following treatment of chronic periodontitis: A pilot case-control study. J Clin Periodontol 2017; 44:905-914. [DOI: 10.1111/jcpe.12783] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Farah Asa'ad
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
| | - Valentina Bollati
- EPIGET-Epidemiology, Epigenetics and Toxicology Lab; Department of Clinical Sciences and Community Health; University of Milan; Milan Italy
- Epidemiology Unit; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; Milan Italy
| | - Giorgio Pagni
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
| | - Rogerio M. Castilho
- Laboratory of Epithelial Biology; University of Michigan School of Dentistry; Ann Arbor MI USA
- Department of Periodontics and Oral Medicine; School of Dentistry; University of Michigan; Ann Arbor MI USA
| | - Eleonora Rossi
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
| | | | - Letizia Tarantini
- EPIGET-Epidemiology, Epigenetics and Toxicology Lab; Department of Clinical Sciences and Community Health; University of Milan; Milan Italy
| | - Dario Consonni
- Epidemiology Unit; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; Milan Italy
| | - William V. Giannobile
- Department of Periodontics and Oral Medicine; School of Dentistry; University of Michigan; Ann Arbor MI USA
| | - Giulio Rasperini
- Department of Biomedical, Surgical and Dental Sciences; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
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Pesevska S, Gjorgoski I, Ivanovski K, Soldatos NK, Angelov N. The effect of low-level diode laser on COX-2 gene expression in chronic periodontitis patients. Lasers Med Sci 2017; 32:1463-1468. [DOI: 10.1007/s10103-017-2231-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 05/12/2017] [Indexed: 12/01/2022]
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Nakashyan V, Tipton DA, Karydis A, Livada R, Stein SH. Effect of 1,25(OH) 2 D 3 and 20(OH)D 3 on interleukin-1β-stimulated interleukin-6 and -8 production by human gingival fibroblasts. J Periodontal Res 2017; 52:832-841. [PMID: 28345770 DOI: 10.1111/jre.12452] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/28/2016] [Indexed: 12/23/2022]
Abstract
BACKGROUND AND OBJECTIVE Vitamin D-1,25(OH)2 D3 or 1,25D3-maintains healthy osseous tissue, stimulates the production of the antimicrobial peptide cathelicidin and has anti-inflammatory effects, but it can cause hypercalcemia. Evidence links diminished serum levels of 1,25D3 with increased gingival inflammation. Periodontitis progression is associated with increased local production of inflammatory mediators by immune cells and gingival fibroblasts. These include interleukin (IL)-6, a regulator of osteoclastic bone resorption, and the neutrophil chemoattractant IL-8, both regulated by signaling pathways, including NF-κB and MAPK/AP-1. The objectives were to determine the effects of 1,25D3 or a non-calcemic analog, 20-hydroxyvitamin D3 -20(OH)D3 or 20D3-on IL-1β-stimulated IL-6 and IL-8 production, and NF-κB and MAPK/AP-1 activation, by human gingival fibroblasts. MATERIAL AND METHODS Human gingival fibroblasts were incubated ± IL-1β, with or without exposure to 1,25D3 or 20D3. IL-6 and IL-8 in culture supernatants were measured by enzyme-linked immunosorbent assay. NF-κB (p65) and AP-1 (phospho-cJun) and were measured in nuclear extracts via binding to specific oligonucleotides. Data were analyzed using ANOVA and Scheffe's F procedure for post hoc comparisons. RESULTS IL-1β-stimulated IL-6 and IL-8 levels were both significantly inhibited (40%-60%) (P<.045) by 1,25D3, but not 20D3 (0%-15% inhibition, not statistically significant). Both 1,25D3 and 20D3 significantly and similarly inhibited IL-1β-stimulated nuclear levels of p65 and phospho-cJun (P<.02). CONCLUSION Reduction of the activation of NF-κB and AP-1 alone is not able to inhibit strongly the IL-1β stimulated IL-6 and IL-8 gene expression. 1,25D3 but not 20D3 may affect some of the many other factors/processes/pathways that in turn regulate the expression of these genes. However, the results suggest that topical application of ligands of the vitamin D receptor may be useful in the local treatment of periodontitis while reducing adverse systemic effects.
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Affiliation(s)
- V Nakashyan
- College of Dentistry, Department of Periodontology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - D A Tipton
- College of Dentistry, Department of Periodontology, University of Tennessee Health Science Center, Memphis, TN, USA.,Department of Bioscience Research, University of Tennessee Health Science Center, Memphis, TN, USA
| | - A Karydis
- College of Dentistry, Department of Periodontology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - R Livada
- College of Dentistry, Department of Periodontology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - S H Stein
- College of Dentistry, Department of Periodontology, University of Tennessee Health Science Center, Memphis, TN, USA
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Ugale GM, Kalburgi NB, Bilichodmath S, Warad SB, Ugale MS, Koregol AC, Bijjargi SC. Betacellulin in Chronic Periodontitis Patients With and Without Type 2 Diabetes Mellitus: An Immunohistochemical Study. J Clin Diagn Res 2015; 9:ZC05-9. [PMID: 26673371 PMCID: PMC4668513 DOI: 10.7860/jcdr/2015/15275.6725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 09/16/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND The host immune response to bacterial dental plaque determines periodontal disease susceptibility by increasing the secretion of inflammatory cytokines. The Epidermal Growth Factor family cytokines stimulate proliferation and keratinization of cells in dermis and oral epithelium. Epidermal Growth Factor family consists of Amphiregulin, Betacellulin, Epiregulin, Epigen, Heparin binding Epidermal Growth Factor like growth factor and transforming Growth Factor-alpha. AIM The current study aimed to investigate expression of Betacellulin in chronic periodontitis patients with and without type 2 diabetes mellitus and thereby assessing role of betacellulin in periodontal health and disease. MATERIALS AND METHODS Present study comprised of 90 participants, age ranges from 18 to 60-year-old, for the period of March 2010 to May 2011. Participants were categorized into three groups based Gingival index (GI), probing depth (PD) and clinical attachment loss (CA Loss). Group 1 consisted 30 individuals with clinically healthy periodontium, Group-2 consisted 30 individuals with GI>1, PD≥5 mm, and CA Loss>3 mm. Group-3 (Chronic Periodontitis with type 2 diabetes mellitus) consisted 30 with GI >1, PD≥5 mm, and CA Loss>3 mm. Immunohistochemical localization and quantification of Betacellulin was done in gingival tissue samples from all groups. RESULTS Data showed expression of Betacellulin were higher in chronic periodontitis as compared to healthy. A positive correlation found in Betacellulin expression and Probing Depth in chronic periodontitis. CONCLUSION This footmark study impacts the role of Betacellulin in pathogenesis and progression of periodontal disease which will help in exploration of novel immunotherapeutic strategies and immunological research activity in this field.
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Affiliation(s)
- Gauri M Ugale
- Assistant Professor, Department of Periodontics, MIDSR Dental College and Hospital, Latur, Maharashtra, India
| | - Nagaraj B. Kalburgi
- Professor, Department of Periodontics, PMNM Dental Collegeand Hospital, Bagalkot, Karnataka, India
| | - Shivaprasad Bilichodmath
- Associate Professor, Department of Periodontics, Rajarajeshwari Dental College, Bangalore, karnataka, India
| | - Shivaraj B. Warad
- Professor, Department of Periodontics, P.M.N.M Dental College and Hospital, Bagalkot, Karnataka, India
| | - Mahesh S. Ugale
- Professor, Department of Anatomy, MIMSR Medical College, Latur, Maharashtra, India
| | - Arati C. Koregol
- Reader, Department of Periodontics, P.M.N.M Dental College and Hospital, Bagalkot, Karnataka, India
| | - Shobha C. Bijjargi
- Lecturer, Department of Oral Medicine & Radiology, MIDSR Dental College, Latur, Maharashtra, India
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12
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Tipton DA, Hatten AA, Babu JP, Dabbous MK. Effect of glycated albumin and cranberry components on interleukin-6 and matrix metalloproteinase-3 production by human gingival fibroblasts. J Periodontal Res 2015; 51:228-36. [PMID: 26179241 DOI: 10.1111/jre.12302] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/17/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND OBJECTIVE Gingival fibroblasts have the potential to participate in periodontal inflammation and breakdown, producing interleukin (IL)-6 and matrix metalloproteinase (MMP)-3. Advanced glycation end products (AGEs), formed during diabetic hyperglycemia, might aggravate periodontal inflammation. The cranberry contains anti-inflammatory polyphenols, which inhibit proinflammatory activities of lipopolysaccharide (LPS)- and IL-1β-stimulated human cells. Little is known of its effects on gingival fibroblast IL-6 or MMP-3 production stimulated by AGEs. The objectives were to determine cranberry effects on IL-6 and MMP-3 production by gingival fibroblasts exposed to the representative AGE, glycated human serum albumin (G-HSA), or LPS ± G-HSA. MATERIAL AND METHODS Cranberry high molecular weight non-dialyzable material (NDM), was derived from cranberry juice. Normal human gingival fibroblasts were incubated with G-HSA or normal HSA or Porphyromonas gingivalis LPS (1 μg/mL) ± G-HSA, in the presence or absence of preincubation with NDM. IL-6 and MMP-3 were measured by enzyme-linked immunosorbent assay. Data were analyzed using one-way analysis of variance and Scheffe's F procedure. RESULTS IL-6 production was stimulated by G-HSA or LPS (p < 0.01), which was inhibited in both cases by NDM (p < 0.002). [G-HSA+LPS] synergistically stimulated IL-6 production (p < 0.0001), which was inhibited by NDM. MMP-3 levels were not stimulated by G-HSA but were decreased by LPS (p < 0.02). [G-HSA+LPS] increased MMP-3 production significantly, vs. LPS (p = 0.0005). NDM inhibited MMP-3 levels in the presence of G-HSA or LPS, and in the presence of [G-HSA+LPS] (p < 0.0001). CONCLUSIONS G-HSA ± LPS may have differential effects on IL-6 and MMP-3 production by human gingival fibroblasts, but both are inhibited by NDM. The study suggests that cranberry phenols may be useful in regulating the host response and perhaps treating periodontitis in patients with poorly controlled diabetes.
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Affiliation(s)
- D A Tipton
- College of Dentistry, University of Tennessee Health Science Center, Memphis, TN, USA.,Department of Bioscience Research, University of Tennessee Health Science Center, Memphis, TN, USA
| | - A A Hatten
- College of Dentistry, University of Tennessee Health Science Center, Memphis, TN, USA
| | - J P Babu
- College of Dentistry, University of Tennessee Health Science Center, Memphis, TN, USA.,Department of Bioscience Research, University of Tennessee Health Science Center, Memphis, TN, USA
| | - M Kh Dabbous
- College of Dentistry, University of Tennessee Health Science Center, Memphis, TN, USA.,Department of Bioscience Research, University of Tennessee Health Science Center, Memphis, TN, USA.,College of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA.,Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, USA
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13
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Mesa F, O’Valle F, Rizzo M, Cappello F, Donos N, Parkar M, Chaudhary N, Carini F, Muñoz R, Nibali L. Association between COX-2 rs 6681231 genotype and interleukin-6 in periodontal connective tissue. A pilot study. PLoS One 2014; 9:e87023. [PMID: 24551049 PMCID: PMC3923747 DOI: 10.1371/journal.pone.0087023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 12/17/2013] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVES The aim of this pilot study was to investigate associations between IL-6 and COX-2 expression in gingival biopsies and both clinical diagnosis and genotypes in the IL-6 and COX-2 genes. DESIGN A case-control study included 41 gingival biopsies obtained from Caucasian patients grouped according to clinical diagnosis of gingival health (n = 10), gingivitis (n = 15) or chronic periodontitis (n = 16). Immunohistochemistry analyses were performed to determine COX-2 expression in lamina propria, IL-6 expression in lamina propria and gingival epithelium and level of inflammatory cell infiltrate. Individual DNA was extracted and genotyped by real-time PCR for IL6 SNPs rs 2069827 and rs 2069825 and for COX-2 rs 6681231. RESULTS The percentage of cellular COX-2 expression was associated with the extent of periodontal disease (Arbes index p = 0.026) and inflammatory infiltrate (p<0.0001). No association was observed between IL6 haplotypes and cells positive to IL-6 or COX-2 in gingival tissues. The COX-2 rs 6681231 was associated with cells positive to IL-6 in the connective tissue (p = 0.032). CONCLUSIONS COX-2 expression in gingival tissues may be a marker of periodontal disease severity. COX-2 rs 6681231 may be associated with IL-6 local production in gingival tissues.
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Affiliation(s)
- Francisco Mesa
- Department of Periodontics, School of Dentistry, University of Granada, Granada, Spain
| | - Francisco O’Valle
- Departments of Pathology, School of Medicine and Biopathology and Medicine Regenerative Institute (IBIMER), University of Granada, Granada, Spain
| | - Manfredi Rizzo
- Department of Internal Medicine, University of Palermo, Palermo, Italy
- Euro-Mediterranean Institute of Science and Technology, Palermo, Italy
| | - Francesco Cappello
- Department of Experimental Medicine and Clinical Neuroscience, Section of Human Anatomy, University of Palermo, Palermo, Italy
- Euro-Mediterranean Institute of Science and Technology, Palermo, Italy
| | - Nikos Donos
- Periodontology Unit and Department of Clinical Research, University College London (UCL) Eastman Dental Institute and Hospital, London, United Kingdom
| | - Mohamed Parkar
- Periodontology Unit and Department of Clinical Research, University College London (UCL) Eastman Dental Institute and Hospital, London, United Kingdom
| | - Navidah Chaudhary
- Periodontology Unit and Department of Clinical Research, University College London (UCL) Eastman Dental Institute and Hospital, London, United Kingdom
| | - Francesco Carini
- Department of Experimental Medicine and Clinical Neuroscience, Section of Human Anatomy, University of Palermo, Palermo, Italy
| | | | - Luigi Nibali
- Periodontology Unit and Department of Clinical Research, University College London (UCL) Eastman Dental Institute and Hospital, London, United Kingdom
- * E-mail:
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14
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Tipton DA, Carter TB, Dabbous MK. Inhibition of interleukin 1β-stimulated interleukin-6 production by cranberry components in human gingival epithelial cells: effects on nuclear factor κB and activator protein 1 activation pathways. J Periodontal Res 2013; 49:437-47. [DOI: 10.1111/jre.12122] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2013] [Indexed: 12/16/2022]
Affiliation(s)
- D. A. Tipton
- College of Dentistry; The University of Tennessee Health Science Center; Memphis TN USA
- Department of Bioscience Research; The University of Tennessee Health Science Center; Memphis TN USA
| | - T. B. Carter
- College of Dentistry; The University of Tennessee Health Science Center; Memphis TN USA
- Department of Periodontology; The University of Tennessee Health Science Center; Memphis TN USA
| | - M. Kh. Dabbous
- College of Dentistry; The University of Tennessee Health Science Center; Memphis TN USA
- Department of Bioscience Research; The University of Tennessee Health Science Center; Memphis TN USA
- College of Medicine; The University of Tennessee Health Science Center; Memphis TN USA
- Department of Microbiology, Immunology and Biochemistry; The University of Tennessee Health Science Center; Memphis TN USA
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15
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Tipton DA, Cho S, Zacharia N, Dabbous MK. Inhibition of interleukin-17-stimulated interleukin-6 and -8 production by cranberry components in human gingival fibroblasts and epithelial cells. J Periodontal Res 2013; 48:638-46. [DOI: 10.1111/jre.12050] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/09/2013] [Indexed: 01/28/2023]
Affiliation(s)
- D. A. Tipton
- College of Dentistry; The University of Tennessee Health Science Center; Memphis TN USA
- Department of Bioscience Research; The University of Tennessee Health Science Center; Memphis TN USA
| | - S. Cho
- College of Dentistry; The University of Tennessee Health Science Center; Memphis TN USA
| | - N. Zacharia
- College of Dentistry; The University of Tennessee Health Science Center; Memphis TN USA
| | - M. K. Dabbous
- College of Dentistry; The University of Tennessee Health Science Center; Memphis TN USA
- Department of Bioscience Research; The University of Tennessee Health Science Center; Memphis TN USA
- College of Medicine; The University of Tennessee Health Science Center; Memphis TN USA
- Department of Microbiology, Immunology and Biochemistry; The University of Tennessee Health Science Center; Memphis TN USA
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16
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George AK, Janam P. The short-term effects of non-surgical periodontal therapy on the circulating levels of interleukin-6 and C-reactive protein in patients with chronic periodontitis. J Indian Soc Periodontol 2013; 17:36-41. [PMID: 23633770 PMCID: PMC3636941 DOI: 10.4103/0972-124x.107472] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Accepted: 09/12/2012] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Recent epidemiological studies have shown that periodontal infection is a risk factor for a number of systemic diseases and conditions. In addition to the conventional risk factors, chronic infection and the subsequent generation of a systemic inflammatory response may be associated with this increased risk. AIMS This study was conducted to determine whether the presence of chronic periodontitis and subsequent non-surgical periodontal therapy could influence the serum levels of interleukin-6 and C-reactive protein (CRP) in patients with severe chronic generalized periodontitis. SETTINGS AND DESIGN Participants were selected from subjects who attended the Department of Periodontics and Oral Implantololgy, Government Dental College, Thiruvananthapuram. MATERIALS AND METHODS Sera were obtained from 25 patients with periodontitis for baseline examination and reassessment after completion of treatment. As a control, sera were also obtained from 20 subjects without periodontitis. Interleukin-6 was determined by sensitive enzyme-linked immunosorbent assay, and high-sensitivity CRP (hsCRP) was measured using latex turbidometric immunoassay. STATISTICAL ANALYSIS Data were analyzed using computer software, Statistical Package for Social Sciences (SPSS) version 10. RESULTS The level of interleukin-6 and hsCRP in the sera of periodontitis patients was seen to be higher than those of healthy controls. Interleukin-6 level tended to decrease with improvement of the periodontal condition following treatment and approached that of control subjects, and this decline was statistically significant. The hsCRP levels also showed a decreasing trend following periodontal treatment. CONCLUSIONS In this study, we were able to show that periodontal disease significantly affects the serum levels of systemic inflammatory markers and that non-surgical periodontal therapy could bring about a decrease in the levels of these inflammatory markers.
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Affiliation(s)
- Annie Kitty George
- Department of Periodontics, Pushpagiri Dental College, Thiruvalla, Kerala, India
| | - Prasanthila Janam
- Department of Periodontics, Government Dental College, Trivandrum, Kerala, India
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Abbasi SH, Hosseini F, Modabbernia A, Ashrafi M, Akhondzadeh S. Effect of celecoxib add-on treatment on symptoms and serum IL-6 concentrations in patients with major depressive disorder: randomized double-blind placebo-controlled study. J Affect Disord 2012; 141:308-14. [PMID: 22516310 DOI: 10.1016/j.jad.2012.03.033] [Citation(s) in RCA: 224] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Revised: 03/26/2012] [Accepted: 03/27/2012] [Indexed: 12/22/2022]
Abstract
BACKGROUND It has been proposed that the mechanism of the antidepressant effect of celecoxib is linked to its anti-inflammatory action and particularly its inhibitory effect on pro-inflammatory cytokines (e.g. interleukin-6(IL-6)). We measured changes in serum IL-6 concentrations and depressive symptoms following administration of celecoxib in patients with major depressive disorder (MDD). METHODS In a randomized double-blind placebo-controlled study, 40 patients with MDD and Hamilton Depression Rating Scale-17 items (Ham-D) score ≥18 were randomly assigned to either celecoxib (200mg twice daily) or placebo in addition to sertraline (200mg/day) for 6 weeks. Outcome measures were serum IL-6 concentrations at baseline and week 6, and Ham-D scores at baseline and weeks 1, 2, 4, and 6. RESULTS The celecoxib group showed significantly greater reduction in serum IL-6 concentrations (mean difference (95%CI)=0.42(0.30 to 0.55) pg/ml, t(35)=6.727, P<0.001) as well as Ham-D scores (mean difference (95%CI)=3.35(1.08 to 5.61), t(38)=2.99, P=0.005) than the placebo group. The patients in the celecoxib group experienced more response (95%) and remission (35%) than the placebo group (50% and 5%, P=0.003 and 0.04 respectively). Baseline serum IL-6 levels were significantly correlated with baseline Ham-D scores (r=0.378, P=0.016). Significant correlation was observed between reduction of Ham-D scores and reduction of serum IL-6 levels at week 6 (r=0.673, P<0.001). LIMITATIONS We did not measure other inflammatory biomarkers. CONCLUSIONS We showed that the antidepressant activity of celecoxib might be linked to its capability of reducing IL-6 concentrations. Moreover, supporting previous studies we showed that celecoxib is both safe and effective as an adjunctive antidepressant (Registration number: IRCT138903124090N1).
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Affiliation(s)
- Seyed-Hesameddin Abbasi
- Family Health Research Center, Iranian Petroleum Industry Health Research Institute, NIOC Central Hospital, Tehran, Iran
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18
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Tipton DA, Babu JP, Dabbous MK. Effects of cranberry components on human aggressive periodontitis gingival fibroblasts. J Periodontal Res 2012; 48:433-42. [PMID: 23106206 DOI: 10.1111/jre.12023] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2012] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Aggressive periodontitis (AgP) causes rapid periodontal breakdown involving AgP gingival fibroblast production of cytokines [i.e. interleukin (IL)-6, a bone metabolism regulator], and matrix metalloproteinase (MMP)-3. Lipopolysaccharide upregulates fibroblast IL-6 and MMP-3, via transcription factors (i.e. NF-κB). Cranberry (Vaccinium macrocarpon) inhibits lipopolysaccharide-stimulated macrophage and normal gingival fibroblast activities, but little is known of its effects on AgP fibroblasts. Objectives of this study are to use AgP fibroblasts, to determine cytotoxicity of cranberry components or periodontopathogen (Fusobacterium nucleatum, Porphyromonas gingivalis) lipopolysaccharide ± cranberry components, and effects of cranberry components on lipopolysaccharide-stimulated NF-κB activation and IL-6 and MMP-3 production. MATERIAL AND METHODS AgP fibroblasts were incubated ≤ 6 d with high molecular weight non-dialyzable material (NDM) (derived from cranberry juice (1-500 μg/mL) or lipopolysaccharide (1 μg/mL) ± NDM. Membrane damage and viability were assessed by enzyme activity released into cell supernatants and activity of a mitochondrial enzyme, respectively. Secreted IL-6 and MMP-3 were measured by ELISA. NF-κB p65 was measured via binding to an oligonucleotide containing the NF-κB consensus site. Data were analyzed using analysis of variance and Scheffe's F procedure for post hoc comparisons. RESULTS Short-term exposure to NDM, or lipopolysaccharide ± NDM caused no membrane damage. NDM (≤ 100 μg/mL) or lipopolysaccharide ± NDM had no effect on viability ≤ 7 d exposure. NDM (50 μg/mL) inhibited lipopolysaccharide-stimulated p65 (P ≤ 0.003) and constitutive or lipopolysaccharide-stimulated MMP-3 (P ≤ 0.02). NDM increased AgP fibroblast constitutive or lipopolysaccharide-stimulated IL-6 (P ≤ 0.0001), but inhibited normal human gingival fibroblast IL-6 (P ≤ 0.01). CONCLUSION Lack of toxicity of low NDM concentrations, and its inhibition of NF-κB and MMP-3, suggest that cranberry components may regulate AgP fibroblast inflammatory responses. Distinct effects of NDM on AgP and gingival fibroblast production of IL-6 (which can have both positive and negative effects on bone metabolism) may reflect phenotypic differences in IL-6 regulation in the two cell types.
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Affiliation(s)
- D A Tipton
- Department of Bioscience Research, College of Dentistry, The University of Tennessee Health Science Center, Memphis, TN 38163, USA.
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Li HJ, Reinhardt F, Herschman HR, Weinberg RA. Cancer-stimulated mesenchymal stem cells create a carcinoma stem cell niche via prostaglandin E2 signaling. Cancer Discov 2012; 2:840-55. [PMID: 22763855 DOI: 10.1158/2159-8290.cd-12-0101] [Citation(s) in RCA: 284] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
UNLABELLED Mesenchymal cells of the tumor-associated stroma are critical determinants of carcinoma cell behavior. We focus here on interactions of carcinoma cells with mesenchymal stem cells (MSC), which are recruited to the tumor stroma and, once present, are able to influence the phenotype of the carcinoma cells. We find that carcinoma cell-derived interleukin-1 (IL-1) induces prostaglandin E(2) (PGE(2)) secretion by MSCs. The resulting PGE(2) operates in an autocrine manner, cooperating with ongoing paracrine IL-1 signaling, to induce expression of a group of cytokines by the MSCs. The PGE(2) and cytokines then proceed to act in a paracrine fashion on the carcinoma cells to induce activation of β-catenin signaling and formation of cancer stem cells. These observations indicate that MSCs and derived cell types create a cancer stem cell niche to enable tumor progression via release of PGE(2) and cytokines. SIGNIFICANCE Although PGE2 has been implicated time and again in fostering tumorigenesis, its effects on carcinoma cells that contribute specifically to tumor formation are poorly understood. Here we show that tumor cells are able to elicit a strong induction of the COX-2/microsomal prostaglandin-E synthase-1 (mPGES-1)/PGE(2) axis in MSCs recruited to the tumor-associated stroma by releasing IL-1, which in turn elicits a mesenchymal/stem cell–like phenotype in the carcinoma cells.
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Affiliation(s)
- Hua-Jung Li
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142, USA
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20
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Kim YS, Shin SI, Kang KL, Chung JH, Herr Y, Bae WJ, Kim EC. Nicotine and lipopolysaccharide stimulate the production of MMPs and prostaglandin E2 by hypoxia-inducible factor-1α up-regulation in human periodontal ligament cells. J Periodontal Res 2012; 47:719-28. [PMID: 22571166 DOI: 10.1111/j.1600-0765.2012.01487.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND OBJECTIVE Although hypoxia-inducible factor 1α (HIF-1α) is up-regulated in the periodontal pockets of periodontitis patients, the expression and precise molecular mechanisms of HIF-1α remain unknown in human periodontal ligament cells (PDLCs). The aim of this study was to explore the effects, as well as the signaling pathway, of nicotine and lipopolysaccharide (LPS) on the expression of HIF-1α and on the production of its target genes, including cyclooxygenase-2 (COX-2)-derived prostaglandin E(2) (PGE(2) ), MMP-2 and MMP-9 in PDLCs. MATERIAL AND METHODS The expression of COX-2 and HIF-1α proteins was evaluated using western blotting. The production of PGE(2) and MMPs was evaluated using enzyme immunoassays and zymography, respectively. RESULTS LPS and nicotine synergistically induced the production of PGE(2) , MMP-2 and MMP-9, and increased the expression of MMP-2, MMP-9, COX-2 and HIF-1α proteins. Inhibition of HIF-1α activity by chetomin or knockdown of HIF1α gene expression by small interfering RNA markedly attenuated the production of LPS- and nicotine-stimulated PGE(2) and MMPs, as well as the expression of COX-2 and HIF-1α. Furthermore, pretreatment with inhibitors of COX-2, p38, extracellular signal-regulated kinase, Jun N-terminal kinase, protein kinase C, phosphatidylinositol 3-kinase and nuclear factor-kappaB decreased the expression of nicotine- and LPS-induced HIF-1α and COX-2, as well as the activity of PGE(2) and MMPs. CONCLUSION These data demonstrate novel mechanisms by which nicotine and LPS promote periodontal tissue destruction, and provide further evidence that HIF-1α is a potential target in periodontal disease associated with smoking and dental plaque.
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Affiliation(s)
- Y-S Kim
- Department of Maxillofacial Tissue Regeneration, School of Dentistry and Institute of Oral Biology, Seoul, Korea
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21
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Mesa F, Aguilar M, Galindo-Moreno P, Bravo M, O'Valle F. Cyclooxygenase-2 expression in gingival biopsies from periodontal patients is correlated with connective tissue loss. J Periodontol 2012; 83:1538-45. [PMID: 22324469 DOI: 10.1902/jop.2012.110561] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND The objective of this study is to compare cyclooxygenase-2 (COX-2) protein expression in gingival biopsies from patients with chronic periodontitis (CP), patients with gingivitis (GV), and individuals with no periodontal disease (control group) and to establish its relationship with clinical variables and connective tissue loss in the lamina propria. METHODS A cross-sectional and analytic study was conducted in 108 gingival biopsies from 52 patients with CP, 39 with GV, and 17 controls. All biopsies were processed for conventional histopathologic study, immunohistochemical determination of COX-2 protein expression, and automatic quantification of connective tissue by image analysis. RESULTS The protein expression of COX-2, mainly produced by plasma cells and monocytes, was significantly related to the presence of periodontal disease, bleeding index, intensity of inflammatory infiltrate, and loss of connective tissue in the lamina propria of gingival biopsies (P <0.01, Spearman test). COX-2 expression was also directly correlated with attachment loss (P <0.05, Spearman test). CONCLUSIONS COX-2 protein expression is higher in patients with GV and CP than in individuals without periodontal disease and is inversely correlated with the amount of connective tissue in the lamina propria as determined by image analysis. This finding suggests that COX-2 participates in mechanisms and pathway signaling related to the destruction of fibrillar support structures of the periodontium.
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Affiliation(s)
- Francisco Mesa
- Department of Periodontology, School of Dentistry, University of Granada, Granada, Spain.
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Guzeldemir E, Toygar HU, Boga C, Cilasun U. Dental and periodontal health status of subjects with sickle cell disease. J Dent Sci 2011. [DOI: 10.1016/j.jds.2011.09.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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Chen L, Li DQ, Zhong J, Wu XL, Chen Q, Peng H, Liu SQ. IL-17RA aptamer-mediated repression of IL-6 inhibits synovium inflammation in a murine model of osteoarthritis. Osteoarthritis Cartilage 2011; 19:711-8. [PMID: 21310253 DOI: 10.1016/j.joca.2011.01.018] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Revised: 01/28/2011] [Accepted: 01/31/2011] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Generate DNA aptamers to inhibit IL-17RA-mediated synovial inflammation in an experimental mouse model of osteoarthritis (OA). METHODS A novel cell-SELEX method was applied to obtain DNA aptamers specific for IL-17RA. A single-stranded (ss) DNA library with four(30) probes was synthesised. By incubating this library with NIH3T3 cells, we collected DNA ligands that could bind the cell surface. The collected ligands were incubated with IL-17RA-deficient NIH3T3 cells, and unbound ssDNA was harvested from the supernatant for the next round of selection. After 12 cycles, specific aptamers against IL-17RA were generated. For animal experiments, a meniscectomy was performed on Balb/C mice to generate an animal model of OA. Mice received weekly intra-articular (i.a.) injections of aptamers or control treatments for 6 weeks. Synovial membranes were evaluated by histomorphology and the mRNAs of critical inflammatory cytokines were measured by quantitative reverse transcriptase-polymerase chain reaction (RT-PCR). RESULTS An aptamer termed RA10-6 was obtained that could efficiently block IL-17 binding to IL-17RA in a dose-dependent manner in vitro. Histological examination and quantitative RT-PCR results showed that OA mice that injected with RA10-6, especially in combination with celecoxib demonstrated inhibition of synovial thickening and reduction in IL-6 levels in the synovial tissue. CONCLUSION Our results suggest that RA10-6 can inhibit synovial inflammation by blocking IL-17/IL-17RA-mediated IL-6 expression. RA10-6 acted synergistically with celecoxib to inhibit IL-6 expression in synovial tissues. Thus, aptamers targeting IL-17RA might serve as potent adjunctive agents for the early treatment of OA.
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Affiliation(s)
- L Chen
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China.
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Stein SH, Dean IN, Rawal SY, Tipton DA. Statins regulate interleukin-1β-induced RANKL and osteoprotegerin production by human gingival fibroblasts. J Periodontal Res 2011; 46:483-90. [DOI: 10.1111/j.1600-0765.2011.01364.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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25
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Tipton DA, Seshul BA, Dabbous MK. Effect of bisphosphonates on human gingival fibroblast production of mediators of osteoclastogenesis: RANKL, osteoprotegerin and interleukin-6. J Periodontal Res 2011; 46:39-47. [DOI: 10.1111/j.1600-0765.2010.01306.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Khedmat S, Seyedabadi M, Ghahremani MH, Ostad SN. Cyclooxygenase 2 plays a role in Emdogain-induced proliferation. J Periodontal Res 2010; 46:67-73. [PMID: 20860590 DOI: 10.1111/j.1600-0765.2010.01313.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE Enamel matrix proteins are involved in the development and regeneration of root cementum and in its attachment to dentin; however, the mechanisms through which this occurs have yet to be elucidated. The present study was therefore carried out to evaluate the mitogenic and proliferative responses of human periodontal fibroblast (HPLF) cells to Emdogain (EMD), and the potential role of cyclooxygenase 2 (COX-2) in this process. MATERIAL AND METHODS We investigated the effects of EMD on 5-bromo-2'-deoxyuridine (BrdU) incorporation, colchicine freezing of mitosis, XTT [2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide] reduction and Trypan Blue dye exclusion, with or without celecoxibe, a selective cyclooxygenase-2 (COX-2) inhibitor; we also evaluated the expression of COX-2 mRNA and COX-2 protein in response to EMD. RESULTS EMD significantly enhanced mitosis in, and proliferation of, human periodontal ligament fibroblasts in a dose-dependent manner; however, there was a small increase of DNA synthesis only in response to a high dose of EMD (200 μg/mL). EMD (100 and 200 μg/mL) elicited an increase in COX-2 expression (p ≤ 0.05). Celecoxibe (20 μm) diminished the EMD-induced mitosis and proliferation of HPLF cells (p ≤ 0.05). CONCLUSION Celecoxibe hampered EMD-induced mitosis and proliferation, which, in association with EMD-increased COX-2 expression, indicates that COX-2 may be involved in the proliferative response of HPLF cells to EMD.
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Affiliation(s)
- S Khedmat
- Department of Endodontics and Dental Research Center, Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
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Shibata A, Nakagawa K, Kawakami Y, Tsuzuki T, Miyazawa T. Suppression of gamma-tocotrienol on UVB induced inflammation in HaCaT keratinocytes and HR-1 hairless mice via inflammatory mediators multiple signaling. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:7013-7020. [PMID: 20465215 DOI: 10.1021/jf100691g] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Tocopherol (Toc) such as alpha-Toc has been expected to act as photochemopreventive agent of skin, but the effect of the other vitamin E forms [tocotrienols (T3)] has not been fully understood. We evaluated the anti-inflammatory effect of T3 on UVB-induced inflammatory reaction using immortalized human keratinocytes and hairless mice. gamma-T3 suppressed UVB-induced PGE(2) production while similar alpha-Toc doses had no effect. The anti-inflammatory actions of gamma-T3 were explained by its ability to reduce UVB-induced inflammatory gene and protein expression [cyclooxgenase-2 (COX-2), interleukin (IL)-1beta, IL-6, and monocyte chemotactic protein-1]. Western blot analysis revealed gamma-T3 inhibited p38, extracellular signal-regulated kinase, and c-Jun N-terminal kinase/stress-activated protein kinase activation. In HR-1 hairless mice, oral T3 suppressed UVB-induced changes in skin thickness, COX-2 protein expression, and hyperplasia, but alpha-Toc did not. These results suggest T3 has potential use to protect against UVB-induced skin inflammation.
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Affiliation(s)
- Akira Shibata
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai 981-8555, Japan
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Herseth JI, Refsnes M, Låg M, Schwarze PE. Role of IL-1β and COX2 in silica-induced IL-6 release and loss of pneumocytes in co-cultures. Toxicol In Vitro 2009; 23:1342-53. [DOI: 10.1016/j.tiv.2009.06.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2008] [Revised: 06/18/2009] [Accepted: 06/30/2009] [Indexed: 01/02/2023]
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Pinho MDN, Pereira LB, de Souza SLS, Palioto DB, Grisi MFDM, Novaes AB, Taba M. Short-term effect of COX-2 selective inhibitor as an adjunct for the treatment of periodontal disease: a clinical double-blind study in humans. Braz Dent J 2009; 19:323-8. [PMID: 19180322 DOI: 10.1590/s0103-64402008000400007] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2008] [Accepted: 03/13/2008] [Indexed: 11/21/2022] Open
Abstract
Adjunctive therapeutic strategies that modulate the inflammatory mediators can play a significant role in periodontal therapy. In this double-blind, placebo-controlled study, 60 subjects diagnosed as periodontitis patients were evaluated for 28 days after periodontal treatment combined with selective cyclooxygenase-2 (COX-2) inhibitor. The experimental group received scaling and root planning (SRP) combined with the Loxoprofen antiinflammatory drug (SRP+Loxoprofen). The control group received SRP combined with placebo (SRP+placebo). Plaque index (PI), probing pocket depth (PD) and bleeding on probing (BOP) were monitored with an electronic probe at baseline and after 14 and 28 days. Both groups displayed clinical improvement in PD, PI and BOP. They also showed statistically similar values (p>0.05) of PD reduction on day 14 (0.4 mm) and on day 28 (0.6 mm). At the baseline, few deeper sites (>or=7 mm) from SRP+Loxoprofen group were responsible and most PD reduction was observed after 14 days (p<0.05). The percentage of remaining deep pockets (>or=7 mm) after 14 days in the SRP+Loxoprofen group was significantly lower (p<0.05) than in the SRP+placebo group. Loxoprofen presents potential effect as an adjunct of periodontal disease treatment, but long-term clinical trials are necessary to confirm its efficacy.
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Affiliation(s)
- Márcia de Noronha Pinho
- Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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Wang XM, Hamza M, Wu TX, Dionne RA. Upregulation of IL-6, IL-8 and CCL2 gene expression after acute inflammation: Correlation to clinical pain. Pain 2009; 142:275-283. [PMID: 19233564 DOI: 10.1016/j.pain.2009.02.001] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Revised: 12/15/2008] [Accepted: 02/02/2009] [Indexed: 12/20/2022]
Abstract
Tissue injury initiates a cascade of inflammatory mediators and hyperalgesic substances including prostaglandins, cytokines and chemokines. Using microarray and qRT-PCR gene expression analyses, the present study evaluated changes in gene expression of a cascade of cytokines following acute inflammation and the correlation between the changes in the gene expression level and pain intensity in the oral surgery model of tissue injury and acute pain. Tissue injury resulted in a significant upregulation in the gene expression of interleukin-6 (IL-6; 63.3-fold), IL-8 (8.1-fold), chemokine (C-C motif) ligand 2 (CCL2; 8.9-fold), chemokine (C-X-C motif) ligand 1 (CXCL1; 30.5-fold), chemokine (C-X-C motif) ligand 2 (CXCL2; 26-fold) and annexin A1 (ANXA1; 12-fold). The upregulation of IL-6 gene expression was significantly correlated to the upregulation of IL-8, CCL2, CXCL1 and CXCL2 gene expression. Interestingly, the tissue injury-induced upregulation of IL-6, IL-8 and CCL2 gene expression, was positively correlated to pain intensity at 3h post-surgery, the onset of acute inflammatory pain. However, ketorolac treatment did not have a significant effect on the gene expression of IL-6, IL-8, CCL2, CXCL2 and ANXA1 at the same time point of acute inflammation. These results demonstrate that the upregulation of IL-6, IL-8 and CCL2 gene expression contributes to the development of acute inflammation and inflammatory pain. The lack of effect of ketorolac on the expression of these gene products may be related to the ceiling analgesic effects of non-steroidal anti-inflammatory drugs.
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Affiliation(s)
- Xiao-Min Wang
- National Institute of Nursing Research, NIH, Building 10, CRC, Room 2-1339, Bethesda, MD 20892, USA National Institute of Dental and Craniofacial Research, NIH, Bethesda, MD, USA Department of Pharmacology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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Queiroz-Junior CM, Pacheco CMF, Maltos KLM, Caliari MV, Duarte IDG, Francischi JN. Role of systemic and local administration of selective inhibitors of cyclo-oxygenase 1 and 2 in an experimental model of periodontal disease in rats. J Periodontal Res 2009; 44:153-60. [PMID: 19210344 DOI: 10.1111/j.1600-0765.2007.01069.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND AND OBJECTIVE Periodontal disease is an inflammatory condition of tooth-supporting tissues. Arachidonic acid metabolites have been implicated in development of periodontal disease, especially those derived from the cyclo-oxygenase (COX) pathway. This study investigated the role of inhibitors of cyclo-oxygenases (COX-1 and COX-2) in a model of periodontal disease in rats. MATERIAL AND METHODS A ligature was placed around the molar of rats. Losses of fiber attachment and of alveolar bone were measured morphometrically in histologically prepared sections. Infiltration of cells into gingival tissue surrounding the ligated tooth was also determined. RESULTS Systemic and local administration of non-selective and selective COX-2 inhibitors, preventively, resulted in significant reduction of the losses of fiber attachment and alveolar bone, as well as decreased leukocyte numbers in gingival tissue. Preventive selective inhibition of COX-1 was as effective as COX-2 inhibition in reducing local fiber attachment loss and cell migration, but did not prevent alveolar bone loss. CONCLUSION Our results provide evidence for participation of COX-1 and COX-2 in early stages of periodontal disease in rats. Furthermore, local administration of COX inhibitors reduced the signs of periodontal disease to the same extent as systemic treatment. Therapeutic approaches incorporating locally delivered anti-inflammatory drugs could be of benefit for patients suffering from periodontal disease.
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Affiliation(s)
- C M Queiroz-Junior
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
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Yen CA, Damoulis PD, Stark PC, Hibberd PL, Singh M, Papas AS. The Effect of a Selective Cyclooxygenase-2 Inhibitor (Celecoxib) on Chronic Periodontitis. J Periodontol 2008; 79:104-13. [DOI: 10.1902/jop.2008.070271] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abstract
Topically administered non-steroidal anti-inflammatory drugs (NSAIDs) inhibit periodontal bone loss, but little is known about the mechanism by which they penetrate oral epithelium. Active transporters could potentially play a role in this process. In this study, we used a cell line derived from oral epithelium to investigate a role for transporters and to characterize conditions that enhance epithelial penetration. Using fluorescence to monitor uptake, we demonstrated that SCC-25 cell monolayers transport naproxen with a Michaelis constant (K(m)) and maximum velocity (V(max)) of 164 microg/mL and 0.94 ng/min/microg protein, respectively. At steady state, the intra-cellular/extracellular concentration ratio was 3.4. Naproxen accumulation was more efficient at acidic pH than under neutral or alkaline conditions. Small proportions of glycerol, Pluronic F-127, and glucosylceramide enhanced naproxen entry. The individual and combined effects of glycerol and Pluronic F-127 were of lesser magnitude than those obtained with glucosylceramide or at pH 6.3. Thus, SCC-25 cells possess transporters for naproxen.
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Affiliation(s)
- R R Fitzgerald
- Section of Periodontology, College of Dentistry, The Ohio State University Health Sciences Center, 305 West 12th Avenue, P.O. Box 182357, Columbus, OH 43218-2357, USA
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Sandulache VC, Parekh A, Li-Korotky H, Dohar JE, Hebda PA. Prostaglandin E2 inhibition of keloid fibroblast migration, contraction, and transforming growth factor (TGF)-beta1-induced collagen synthesis. Wound Repair Regen 2007; 15:122-33. [PMID: 17244328 DOI: 10.1111/j.1524-475x.2006.00193.x] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Keloid formation has been linked to aberrant fibroblast activity, exacerbated by growth factors and inflammatory mediators. Prostaglandin E2 (PGE2), synthesized from arachidonic acid by cyclooxygenases (COX) and synthases (PGES), acts as both an inflammatory mediator and fibroblast modulator. Although PGE2 has known antifibrotic effects in the lower airway, its role in dermal fibrosis in general, and keloid formation in particular, remains unclear. This study focused on: (1) the effects of PGE2 on keloid fibroblast migration, contraction, and collagen synthesis and (2) endogenous PGE2 synthesis in response interleukin-1beta. PGE2 decreased keloid fibroblast migration and contraction via an EP2/EP4-cAMP mechanism that disrupted actin cytoskeletal dynamics and reversed transforming growth factor-beta1-induced collagen I and III synthesis. Impaired fibroblast PGE2 production has been linked to lower airway fibrosis and recently to keloid formation. Here, we showed that interleukin-1beta stimulation leads to nuclear factor-kappaB translocation to the nucleus, resulting in up-regulation of COX-2 and microsomal PGE2 synthase 1. Up-regulation of COX-2 in, and secretion of PGE2 by keloid fibroblasts are diminished compared with their normal fibroblast counterparts. We suggest that the antifibrotic effects of PGE2 during keloid formation are potentially diminished due to aberrant paracrine fibroblast signaling. Exogenous PGE2 may supplement decreased endogenous levels and inhibit keloid formation or progression.
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Affiliation(s)
- Vlad C Sandulache
- Division of Pediatric Otolaryngology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
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Beebe DE, Gengler WR. Osseous surgery to augment treatment of chronic periodontitis of canine teeth in a cat. J Vet Dent 2007; 24:30-8. [PMID: 17500486 DOI: 10.1177/089875640702400105] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Donald E Beebe
- University of Wisconsin-Madison, School of Veterinary Medicine, 53706, USA.
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Tipton DA, Gay DC, DeCoster VA. Effect of a cyclooxygenase-2 inhibitor on interleukin-1beta-stimulated activation of the transcription factor nuclear factor-kappa B in human gingival fibroblasts. J Periodontol 2007; 78:542-9. [PMID: 17335379 DOI: 10.1902/jop.2007.060250] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND In previous work, the cyclooxygenase-2 inhibitor NS-398 inhibited interleukin (IL)-1beta-stimulated prostaglandin E(2) (PGE(2)) production almost completely while partially inhibiting IL-6 production in aggressive periodontitis (AgP) human gingival fibroblasts. PGE(2) and the transcription factor nuclear factor-kappa B (NF-kappaB) regulate IL-1beta-stimulated IL-6 production. Cytoplasmic NF-kappaB is bound to inhibitors (IkappaB proteins). IL-1beta initiates a cascade resulting in phosphorylation and degradation of IkappaB, allowing nuclear translocation of NF-kappaB and target gene activation. The purpose of this study was to determine whether NS-398 inhibited phosphorylation of IkappaB and NF-kappaB activation. METHODS AgP fibroblasts (1 to 2 x 10(6)) were exposed to IL-1beta (1 x 10(11)M) with or without NS-398 (10 nM) in serum-free medium. The NF-kappaB subunit p65 and phospho-IkappaBalpha were measured in whole cell, cytoplasmic, or nuclear extracts, using colorimetric assays. Enzyme-linked immunosorbent assays were used to measure PGE(2) and IL-6 production by 2.5 x 10(4) cells after exposure to IL-1beta with or without NS-398 in serum-free medium. RESULTS Consistent with previous results, NS-398 reduced IL-1beta-stimulated PGE(2) by approximately 98% (P <0.001) and IL-6 by approximately 65% (P <0.001). IL-1beta increased nuclear and cytoplasmic p65 ( approximately 8-fold [P <0.001] and approximately 2.5-fold [P <0.03], respectively) over control levels. NS-398 reduced IL-1beta-stimulated nuclear and cytoplasmic p65 to control levels. IL-1beta increased phospho-IkappaBalpha in whole cell extracts by a maximum of approximately 9.5 times (P = 0.0001), and this was inhibited significantly by NS-398 (P <or=0.008). CONCLUSIONS NS-398 inhibited NF-kappaB activation and nuclear p65 levels in human gingival fibroblasts. This seemed to be due to inhibition of the phosphorylation cascade resulting in formation of phospho-IkappaBalpha and free p65. NF-kappaB inhibition may be useful in treating inflammatory diseases such as AgP.
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Affiliation(s)
- David A Tipton
- Dental Research Center and Department of Periodontology, College of Dentistry, The University of Tennessee Health Science Center, Memphis, TN 38163, USA.
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Tipton DA, Hamman NR, Dabbous MK. Effect of myrrh oil on IL-1β stimulation of NF-κB activation and PGE2 production in human gingival fibroblasts and epithelial cells. Toxicol In Vitro 2006; 20:248-55. [PMID: 16112536 DOI: 10.1016/j.tiv.2005.07.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2005] [Revised: 06/30/2005] [Accepted: 07/05/2005] [Indexed: 01/04/2023]
Abstract
Anecdotal and scientific evidence suggest that myrrh oil (MO) has anti-inflammatory properties. Subtoxic MO levels decrease interleukin (IL)-1beta-stimulated production of the inflammatory cytokine IL-6 by human gingival fibroblasts, but not epithelial cells. IL-1beta upregulates IL-6 via PGE(2), and via NF-kappaB, a transcription factor for many inflammatory mediator genes. NF-kappaB is inhibited by sesquiterpene compounds (from plants other than myrrh). This study determined MO effect on IL-1beta-stimulated PGE(2) production and NF-kappaB activation in gingival fibroblasts and epithelial cells. Cells were preincubated with MO, exposed to IL-1beta, cytoplasmic and nuclear fractions were isolated, and activated NF-kappaB was measured using an ELISA-based assay. IL-1beta increased nuclear activated NF-kappaB levels in fibroblasts and epithelial cells [10- and 2.5-fold over controls, respectively (p=0.0001)], and these increases were not significantly affected by MO. PGE(2) was measured in cell supernatants by ELISA, after preincubation with MO and exposure to IL-1beta. MO inhibited IL-1beta-stimulated PGE(2) production by fibroblasts (p=0.001), but not epithelial cells. The data suggest that gingival epithelial cells and fibroblasts may differ in the magnitude of NF-kappaB activation after IL-1beta stimulation, and that MO inhibition of IL-1beta-stimulated IL-6 production in fibroblasts is due in part to inhibition of PGE(2), but not NF-kappaB activation. (Supported by NIDCR DE-0725.).
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Affiliation(s)
- D A Tipton
- Dental Research Center and Department of Periodontology, College of Dentistry, University of Tennessee Health Science Center, Memphis, TN 38163, USA.
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Affiliation(s)
- Harvey A Schenkein
- Department of Peridontics, Virginia Commonwealth University-VCU/MCV, Richmond, Virginia, USA
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Watkins LR, Wieseler-Frank J, Milligan ED, Johnston I, Maier SF. Chapter 22 Contribution of glia to pain processing in health and disease. HANDBOOK OF CLINICAL NEUROLOGY 2006; 81:309-23. [PMID: 18808844 DOI: 10.1016/s0072-9752(06)80026-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Spink M, Bann S, Glickman R. Clinical implications of cyclo-oxygenase-2 inhibitors for acute dental pain management: benefits and risks. J Am Dent Assoc 2005; 136:1439-48. [PMID: 16255470 DOI: 10.14219/jada.archive.2005.0059] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
UNLABELLED BACKGROUND; Cyclo-oxygenase-2 inhibitors (COX-2i) demonstrate analgesic efficacy for patients who require gastrointestinal safety. The authors discuss the potential benefits and risks of these novel, but expensive, analgesics when used in dentistry. METHODS The authors conducted a MEDLINE search focused on the subject headings of common analgesic drugs and COX-2i, using peer-reviewed journals limited to the English language. They selected for review 127 articles that met the criteria. They also tried to identify any randomized controlled trials pertinent to dentistry and indicative of evidence-based medicine. RESULTS. When comparing COX isoforms (COX-1 and COX-2), the authors found that overlapping and mutually exclusively properties coexist. COX-2i originally were developed to minimize interference with the gastroprotective properties of the COX-1 isoform, while selectively preventing prostanoid synthesis expressed solely at sites of bodily trauma or other inflammation. COX-2i were found to provide pain relief equal to or slightly exceeding that offered by many mild narcotics. They may avoid some of the serious side effects that can occur with even short-term use of nonselective nonsteroidal anti-inflammatory drugs. CONCLUSIONS The pharmacodynamics of COX-2i reveal an agent that includes analgesic, anti-inflammatory and gastroprotective properties but also allows for an undesirable disruption of the delicate hemodynamic balance. CLINICAL IMPLICATIONS Symptomatic and asymptomatic gastroparietic patients who do not have severe cardiovascular, cerebral or renal ischemic disease benefit from use of COX-2i. Long-term use of these agents in medically compromised patients may prove disastrous.
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Affiliation(s)
- Michael Spink
- Department of Oral and Maxillofacial Surgery, Bellevue Hospital, New York, NY 10016, USA.
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Gallucci RM, O'Dell SK, Rabe D, Fechter LD. JP-8 jet fuel exposure induces inflammatory cytokines in rat skin. Int Immunopharmacol 2005; 4:1159-69. [PMID: 15251112 DOI: 10.1016/j.intimp.2004.05.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2004] [Revised: 04/01/2004] [Accepted: 05/04/2004] [Indexed: 11/15/2022]
Abstract
The Department of Defense (DoD) has identified that one of the main complaints of personnel exposed to JP-8 jet fuel is irritant dermatitis. The purpose of this investigation is to describe the JP-8-induced inflammatory cytokine response in skin. JP-8 jet fuel or acetone control (300 microl) was applied to the denuded skin of rats once a day for 7 days. Skin samples from the exposed area were collected 2 and 24 h after the final exposure. Histological examination of skin biopsies showed neutrophilic inflammatory infiltrate. Reverse transcription-polymerase chain reaction (RT-PCR) was performed utilizing skin total RNA to examine the expression of various inflammatory cytokines. The CXC chemokine GROalpha was significantly upregulated at both time points, whereas GRObeta was only increased 2 h post final exposure. The CC chemokines MCP-1, Mip-1alpha, and eotaxin were induced at both time points, whereas Mip-1beta was induced only 24 h post exposure. Interleukins-1beta and -6 (IL-1beta and IL-6) mRNAs were significantly induced at both time points, while TNFalpha was not significantly different from control. Enzyme-linked immunosorbent assay (ELISA) of skin protein confirmed that MCP-1, TNFalpha, and IL-1beta were modulated as indicated by PCR analysis. However, skin IL-6 protein content was not increased 2 h post exposure, whereas it was significantly upregulated by jet fuel after 24 h. Data from the present study indicate that repeated (7 days) JP-8 exposure induces numerous proinflammatory cytokines in skin. The increased expression of these cytokines and chemokines may lead to increased inflammatory infiltrate in exposed skin, resulting in JP-8-induced irritant dermatitis.
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Affiliation(s)
- Randle M Gallucci
- Department of Pharmaceutical Sciences, College of Pharmacy, The University of Oklahoma Health Sciences Center, P.O. Box 26901, Oklahoma City, OK 73190, USA.
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