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Yan P, Ke B, Fang X. Bioinformatics reveals the pathophysiological relationship between diabetic nephropathy and periodontitis in the context of aging. Heliyon 2024; 10:e24872. [PMID: 38304805 PMCID: PMC10830875 DOI: 10.1016/j.heliyon.2024.e24872] [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: 08/14/2023] [Revised: 01/08/2024] [Accepted: 01/16/2024] [Indexed: 02/03/2024] Open
Abstract
Diabetic nephropathy (DN) is one of the most common microvascular complications of diabetes mellitus. Periodontitis (PD) is a microbially-induced chronic inflammatory disease that is thought to have a bidirectional relationship with diabetes mellitus. DN and PD are recognized as models associated with accelerated aging. This study is divided into two parts, the first of which explores the bidirectional causal relationship through Mendelian randomization (MR). The second part aims to investigate the relationship between PD and DN in terms of potential crosstalk genes, aging-related genes, biological pathways, and processes using bioinformatic methods. MR analysis showed no evidence to support a causal relationship between DN and PD (P = 0.34) or PD and DN (P = 0.77). Using the GEO database, we screened 83 crosstalk genes overlapping in two diseases. Twelve paired genes identified by Pearson correlation and the four hub genes in the key cluster were jointly evaluated as key crosstalk-aging genes. Using support vector machine recursive feature elimination (SVM-RFE) and maximal clique centrality (MCC) algorithms, feature selection established five genes as the key crosstalk-aging genes. Based on five key genes, an ANN diagnostic model with reliable diagnosis of two diseases was developed. Gene enrichment analysis indicates that AGE-RAGE pathway signaling, the complement system, and multiple immune inflammatory pathways may be involved in common features of both diseases. Immune infiltration analysis reveals that most immune cells are differentially expressed in PD and DN, with dendritic cells and T cells assuming vital roles in both diseases. Overall, although there is no causal link, CSF1R, CXCL6, VCAM1, JUN and IL1B may be potential crosstalk-aging genes linking PD and DN. The common pathways and markers explored in this study could contribute to a deeper understanding of the common pathogenesis of both diseases in the context of aging and provide a theoretical basis for future research.
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Affiliation(s)
- Peng Yan
- Department of Nephrology, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Ben Ke
- Department of Nephrology, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Xiangdong Fang
- Department of Nephrology, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
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2
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Zhang L, Chai R, Tai Z, Miao F, Shi X, Chen Z, Zhu Q. Noval advance of histone modification in inflammatory skin diseases and related treatment methods. Front Immunol 2024; 14:1286776. [PMID: 38235133 PMCID: PMC10792063 DOI: 10.3389/fimmu.2023.1286776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 12/08/2023] [Indexed: 01/19/2024] Open
Abstract
Inflammatory skin diseases are a group of diseases caused by the disruption of skin tissue due to immune system disorders. Histone modification plays a pivotal role in the pathogenesis and treatment of chronic inflammatory skin diseases, encompassing a wide range of conditions, including psoriasis, atopic dermatitis, lupus, systemic sclerosis, contact dermatitis, lichen planus, and alopecia areata. Analyzing histone modification as a significant epigenetic regulatory approach holds great promise for advancing our understanding and managing these complex disorders. Additionally, therapeutic interventions targeting histone modifications have emerged as promising strategies for effectively managing inflammatory skin disorders. This comprehensive review provides an overview of the diverse types of histone modification. We discuss the intricate association between histone modification and prevalent chronic inflammatory skin diseases. We also review current and potential therapeutic approaches that revolve around modulating histone modifications. Finally, we investigated the prospects of research on histone modifications in the context of chronic inflammatory skin diseases, paving the way for innovative therapeutic interventions and improved patient outcomes.
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Affiliation(s)
- Lichen Zhang
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Rongrong Chai
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Zongguang Tai
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Fengze Miao
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Xinwei Shi
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Zhongjian Chen
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Quangang Zhu
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
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3
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Jiang T, Xia T, Qiao F, Wang N, Jiang Y, Xin H. Role and Regulation of Transcription Factors in Osteoclastogenesis. Int J Mol Sci 2023; 24:16175. [PMID: 38003376 PMCID: PMC10671247 DOI: 10.3390/ijms242216175] [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: 09/24/2023] [Revised: 11/01/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
Bones serve mechanical and defensive functions, as well as regulating the balance of calcium ions and housing bone marrow.. The qualities of bones do not remain constant. Instead, they fluctuate throughout life, with functions increasing in some situations while deteriorating in others. The synchronization of osteoblast-mediated bone formation and osteoclast-mediated bone resorption is critical for maintaining bone mass and microstructure integrity in a steady state. This equilibrium, however, can be disrupted by a variety of bone pathologies. Excessive osteoclast differentiation can result in osteoporosis, Paget's disease, osteolytic bone metastases, and rheumatoid arthritis, all of which can adversely affect people's health. Osteoclast differentiation is regulated by transcription factors NFATc1, MITF, C/EBPα, PU.1, NF-κB, and c-Fos. The transcriptional activity of osteoclasts is largely influenced by developmental and environmental signals with the involvement of co-factors, RNAs, epigenetics, systemic factors, and the microenvironment. In this paper, we review these themes in regard to transcriptional regulation in osteoclastogenesis.
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Affiliation(s)
- Tao Jiang
- School of Pharmacy, Naval Medical University, Shanghai 200433, China; (T.J.); (T.X.); (F.Q.)
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, China
| | - Tianshuang Xia
- School of Pharmacy, Naval Medical University, Shanghai 200433, China; (T.J.); (T.X.); (F.Q.)
| | - Fangliang Qiao
- School of Pharmacy, Naval Medical University, Shanghai 200433, China; (T.J.); (T.X.); (F.Q.)
| | - Nani Wang
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou 310007, China;
| | - Yiping Jiang
- School of Pharmacy, Naval Medical University, Shanghai 200433, China; (T.J.); (T.X.); (F.Q.)
| | - Hailiang Xin
- School of Pharmacy, Naval Medical University, Shanghai 200433, China; (T.J.); (T.X.); (F.Q.)
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, China
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Dual-Function Semaphorin 4D Released by Platelets: Suppression of Osteoblastogenesis and Promotion of Osteoclastogenesis. Int J Mol Sci 2022; 23:ijms23062938. [PMID: 35328359 PMCID: PMC8955605 DOI: 10.3390/ijms23062938] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 02/04/2023] Open
Abstract
Effects of the antiosteoblastogenesis factor Semaphorin 4D (Sema4D), expressed by thrombin-activated platelets (TPs), on osteoblastogenesis, as well as osteoclastogenesis, were investigated in vitro. Intact platelets released both Sema4D and IGF-1. However, in response to stimulation with thrombin, platelets upregulated the release of Sema4D, but not IGF-1. Anti-Sema4D-neutralizing monoclonal antibody (mAb) upregulated TP-mediated osteoblastogenesis in MC3T3-E1 osteoblast precursors. MC3T3-E1 cells exposed to TPs induced phosphorylation of Akt and ERK further upregulated by the addition of anti-sema4D-mAb, suggesting the suppressive effects of TP-expressing Sema4D on osteoblastogenesis. On the other hand, TPs promoted RANKL-mediated osteoclastogenesis in the primary culture of bone-marrow-derived mononuclear cells (BMMCs). Among the known three receptors of Sema4D, including Plexin B1, Plexin B2 and CD72, little Plexin B2 was detected, and no Plexin B1 was detected, but a high level of CD72 mRNA was detected in RANKL-stimulated BMMCs by qPCR. Both anti-Sema4D-mAb and anti-CD72-mAb suppressed RANKL-induced osteoclast formation and bone resorptive activity, suggesting that Sema4D released by TPs promotes osteoclastogenesis via ligation to a CD72 receptor. This study demonstrated that Sema4D released by TPs suppresses osteogenic activity and promotes osteoclastogenesis, suggesting the novel property of platelets in bone-remodeling processes.
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Influence of Gestational Hormones on the Bacteria-Induced Cytokine Response in Periodontitis. Mediators Inflamm 2021; 2021:5834608. [PMID: 34707462 PMCID: PMC8545568 DOI: 10.1155/2021/5834608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/23/2021] [Accepted: 09/27/2021] [Indexed: 02/07/2023] Open
Abstract
Periodontitis is an inflammatory disease that affects the supporting structures of teeth. The presence of a bacterial biofilm initiates a destructive inflammatory process orchestrated by various inflammatory mediators, most notably proinflammatory cytokines, which are upregulated in the gingival crevicular fluid, leading to the formation of periodontal pockets. This represents a well-characterized microbial change during the transition from periodontal health to periodontitis; interestingly, the gestational condition increases the risk and severity of periodontal disease. Although the influence of periodontitis on pregnancy has been extensively reviewed, the relationship between pregnancy and the development/evolution of periodontitis has been little studied compared to the effect of periodontitis on adverse pregnancy outcomes. This review is aimed at summarizing the findings on the pregnancy-proinflammatory cytokine relationship and discussing its possible involvement in the development of periodontitis. We address (1) an overview of periodontal disease, (2) the immune response and possible involvement of proinflammatory cytokines in the development of periodontitis, (3) how bone tissue remodelling takes place with an emphasis on the involvement of the inflammatory response and metalloproteinases during periodontitis, and (4) the influence of hormonal profile during pregnancy on the development of periodontitis. Finally, we believe this review may be helpful for designing immunotherapies based on the stage of pregnancy to control the severity and pathology of periodontal disease.
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Prasanna JS, Sumadhura C. Estimation of neopterin as a biomarker in biofluids of pre and post-menopausal women after initial periodontal therapy: A biochemical assay. J Indian Soc Periodontol 2021; 25:300-306. [PMID: 34393400 PMCID: PMC8336780 DOI: 10.4103/jisp.jisp_516_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 01/26/2021] [Accepted: 02/09/2021] [Indexed: 11/17/2022] Open
Abstract
Context: Periodontitis (PDD) is a chronic inflammatory condition by nature which destroys the surrounding tooth structures. Menopause (pre and post) worsens the inflammatory state. Biofluids could serve as sources of biomarkers that could diagnose or indicate the intensity and extent of both conditions. Aims: This study aimed to guestimate the various biofluids of neopterin (NP) levels in premenopause (pre-m) and postmenopausal (post-m) women with PDD after initial periodontal therapy (IPT). Settings and Design: This was an interventional cross-sectional study. Materials and Methods: Based on menstrual history, within the age range of 40–60 years, 30 female patients having PDD participated, who were grouped into pre-m and post-m, each group comprised 15 subjects. A biochemical test of NP levels was done at the initial and three months following IPT. Statistics used: Group comparisons and percentage decrement using independent sample t-test and paired t-test for intragroup comparison were done with the version 21, IBM SPSS software. Results: Intragroup NP analysis at different time points showed significant improvement. Intergroup comparison, however, has shown significant improvement in the premenopausal group (Group I) only. Conclusions: Reduced levels of NP were found in pre-m and post-m groups 3 months after IPT, inferring that IPT is a paragon in periodontal therapy and NP might be a good diagnostic marker to detect PDD.
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Affiliation(s)
- Jammula Surya Prasanna
- Department of Periodontics, Panineeya Institute of Dental Sciences and Research Centre, Hyderabad, Telangana, India
| | - Chinta Sumadhura
- Department of Periodontics, Panineeya Institute of Dental Sciences and Research Centre, Hyderabad, Telangana, India
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Abstract
The last 20 years has seen a shift in medical education from printed analogue formats of knowledge transfer to digital knowledge transfer via media platforms and virtual learning environments. Traditional university medical teaching was characterised by lectures and printed textbooks, which to a degree still have an important role to play in knowledge acquisition, but which in isolation do not engage the modern learner, who has become reliant on digital platforms and 'soundbite' learning. Recently, however, traditional methods of teaching and learning have been augmented by, and indeed sometimes replaced by, the alternative learning methods such as: problem-based learning; a greater integration of basic science and clinical considerations; smaller teaching groups; the 'flipped classroom' concept; and various technological tools which promote an interactive learning style. The aim of these new teaching methods is to overcome the well-documented limitations of traditional lectures and printed material in the transfer of knowledge from expert to student, by better engaging the minds of more visual learners and encouraging the use of diverse resources for lifelong learning. In this commentary paper, we share the concept of video animation as an additional educational tool, and one that can help to integrate molecular, cellular and clinical processes that underpin our understanding of biology and pathology in modern education. Importantly, while they can provide focused and attractive formats for 'soundbite' learning, their aim as a tool within the broader educational toolbox is to direct the interested reader towards more traditional formats of learning, which permit a deeper dive into a particular field or concept. In this manner, carefully constructed video animations can serve to provide a broad overview of a particular field or concept and to facilitate deeper learning when desired by the student. Teaching the knowledge explosion is a challenge. Video animation plays a future role in teaching complex biological concepts and processes. Video animation helps in educating professionals and the public.
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Shu W, Zhang Y, Zhang C, You Q, Zhou H, Wen S. Triclosan inhibits the activation of human periodontal ligament fibroblasts induced by lipopolysaccharide from Porphyromonas gingivalis. J Biomed Res 2020; 35:206-215. [PMID: 33824247 PMCID: PMC8193714 DOI: 10.7555/jbr.34.20200026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Periodontitis is a highly prevalent, chronic, non-specific, and immunologically devastating disease of periodontal tissues, caused by microbial infection. This study aims to examine the efficacy and protective mechanism of triclosan (TCS), a bisphenolic, non-cationic component of oral care products, against periodontal inflammation induced by lipopolysaccharide purified from Porphyromonas gingivalis (LPS-PG). TCS markedly downregulated interleukin-6 (IL-6), IL-8, and IL-15 in human periodontal ligament fibroblasts (HPDLFs) treated with LPS-PG. By using a liquid chromatography-tandem mass spectrometry (LC-MS/MS) approach, 318 differentially expressed proteins (161 upregulated and 157 downregulated) were identified in TCS-pretreated HPDLFs. TCS upregulated HSPA5 and HSP90B1 but downregulated HSPA2. Besides, TCS upregulated miR-548i in HPDLFs, which downregulated IL-15. These results indicate that TCS attenuates the activation of HPDLFs and downregulates the inflammatory cytokines through various mechanisms, thus highlighting its protective role in periodontal inflammation.
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Affiliation(s)
- Wei Shu
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Department of Stomatology, Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu 210029, China
| | - Yanman Zhang
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Chen Zhang
- Department of Biotherapeutics, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, China
| | - Qiang You
- Department of Biotherapeutics, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, China
| | - Hong Zhou
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Department of Biotherapeutics, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, China
| | - Shuang Wen
- Department of Immunology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
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9
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Prasanna JS, Sumadhura C. Biochemical Analysis of Three Biological Fluids and its Response to Non-Surgical Periodontal Therapy in Pre and Postmenopausal Women with Periodontitis. J Menopausal Med 2020; 25:149-157. [PMID: 32307940 PMCID: PMC6952703 DOI: 10.6118/jmm.18179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 11/02/2019] [Accepted: 11/03/2019] [Indexed: 12/23/2022] Open
Abstract
Objectives Periodontitis is a common chronic inflammatory disease characterized by the destruction of the supporting structures of the teeth. The stages of menopause also worsen inflammatory condition. Biomarkers from biological fluids can be used as a diagnostic indicator to correlate these two conditions of present and future disease activity. The aim of the present study was to evaluate the neopterin levels in three biological fluids obtained from pre- and postmenopausal women with periodontitis following non-surgical periodontal therapy (NSPT, that is, scaling). Methods This was a cross-sectional interventional study. Thirty women, aged 40–60 years, with periodontitis were selected according to their menstrual history. They were divided into the pre- and postmenopausal groups, with each group including 15 participants. The neopterin levels were measured in both groups at baseline and 3 months after NSPT. Intergroup comparison and percentage decrement analysis were performed using the independent sample t test, and intragroup comparison was performed using the paired t test. Results There were statistically significant reductions in the mean values of saliva, urine, and plasma from baseline to 3 months after NSPT in the groups. Intergroup comparison showed no significant values in the postmenopausal group, and a significant reduction was seen in the mean values was seen in the mean values. Conclusions Neopterin levels decreased at 3 months after NSPT in both the groups, suggesting that NSPT can be a gold standard therapy and that the neopterin level could be a indicator to identify periodontal destruction.
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Affiliation(s)
- Jammula Surya Prasanna
- Department of Periodontics, Panineeya Institute of Dental Sciences and Research Centre, Hyderabad, India.
| | - Chinta Sumadhura
- Department of Periodontics, Panineeya Institute of Dental Sciences and Research Centre, Hyderabad, India
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Gharibi M, Haroun S, Choy JC, Li PC. A microfluidic antibody bioarray for fast detection of human interleukins in low sample volumes. CAN J CHEM 2019. [DOI: 10.1139/cjc-2018-0506] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The antibody bioarray is a promising tool for the detection of proteins, which can be used as disease biomarkers. Therefore, we have developed a sandwich immunoassay-type bioarray using a microfluidic method to detect human interleukins that have diagnostic values. In the method development, we studied the effect of different factors that affect capture antibody immobilization, antibody–antigen interactions, and detection methods on the bioarray surface. The fluorescence signal obtained from different detection strategies was compared based on the signal fold-increase. This comparison showed that the use of covalent immobilization of capture antibodies, as opposed to their physical adsorption on the bioarray surface, increases the signal by 1.5 fold. Moreover, the use of protein G to achieve a better oriented immobilized capture antibody has resulted in a more than 3-fold signal enhancement.
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Affiliation(s)
- Mahsa Gharibi
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - Samar Haroun
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - Jonathan C. Choy
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - Paul C.H. Li
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
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11
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Berglundh T, Jepsen S, Stadlinger B, Terheyden H. Peri-implantitis and its prevention. Clin Oral Implants Res 2019; 30:150-155. [PMID: 30636066 DOI: 10.1111/clr.13401] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 12/05/2018] [Indexed: 12/23/2022]
Abstract
This perspective article on peri-implantitis and its prevention was produced as a supplement to a 3-D, computer-animated film aiming at presenting key characteristics of peri-implant health, the build-up of a biofilm and the ensuing host-response resulting in peri-implant mucositis and, subsequently, peri-implantitis. Treatment concepts for peri-implantitis were briefly reviewed, and prevention of the condition was brought to attention as a priority in implant dentistry. The overview also highlighted the 2017 World Workshop on Classification of Periodontal and Peri-implant diseases and Conditions, in which new disease definitions and case definitions were presented for peri-implant health, peri-implant mucositis, and peri-implantitis.
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Affiliation(s)
- Tord Berglundh
- Department of Periodontology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Søren Jepsen
- Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, Bonn, Germany
| | - Bernd Stadlinger
- Clinic of Cranio-Maxillofacial and Oral Surgery, University of Zurich, Zurich, Switzerland
| | - Hendrik Terheyden
- Department of Oral & Maxillofacial Surgery, Red Cross Hospital, Kassel, Germany
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12
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Liu D, Cao S, Zhou Y, Xiong Y. Recent advances in endotoxin tolerance. J Cell Biochem 2018; 120:56-70. [PMID: 30246452 DOI: 10.1002/jcb.27547] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 08/02/2018] [Indexed: 12/13/2022]
Abstract
Endotoxin tolerance is defined as a reduced capacity of a cell to respond endotoxin (lipopolysaccharide, LPS) challenge after an initial encounter with endotoxin in advance. The body becomes tolerant to subsequent challenge with a lethal dose of endotoxin and cytokines release and cell/tissue damage induced by inflammatory reaction are significantly reduced in the state of endotoxin tolerance. The main characteristics of endotoxin tolerance are downregulation of inflammatory mediators such as tumor necrosis factor α (TNF-α), interleukin-1β (IL-1β), and C-X-C motif chemokine 10 (CXCL10) and upregulation of anti-inflammatory cytokines such as IL-10 and transforming growth factor β (TGF-β). Therefore, endotoxin tolerance is often regarded as the regulatory mechanism of the host against excessive inflammation. Endotoxin tolerance is a complex pathophysiological process and involved in multiple cellular signal pathways, receptor alterations, and biological molecules. However, the exact mechanism remains elusive up to date. To better understand the underlying cellular and molecular mechanisms of endotoxin tolerance, it is crucial to investigate the comprehensive cellular signal pathways, signaling proteins, cell surface molecules, proinflammatory and anti-inflammatory cytokines, and other mediators. Endotoxin tolerance plays an important role in reducing the mortality of sepsis, endotoxin shock, and other endotoxin-related diseases. Recent reports indicated that endotoxin tolerance is also related to other diseases such as cystic fibrosis, acute coronary syndrome, liver ischemia-reperfusion injury, and cancer. The aim of this review is to discuss the recent advances in endotoxin tolerance mainly based on the cellular and molecular mechanisms by outline the current state of the knowledge of the involvement of the toll-like receptor 4 (TLR4) signaling pathways, negative regulate factor, microRNAs, apoptosis, chromatin modification, and gene reprogramming of immune cells in endotoxin tolerance. We hope to provide a new idea and scientific basis for the rational treatment of endotoxin-related diseases such as endotoxemia, sepsis, and endotoxin shock clinically.
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Affiliation(s)
- Dan Liu
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Shousong Cao
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Yejiang Zhou
- Gastrointestinal Surgery, Affiliated Hospital of Southwest Medical University, Southwest Medical University, Luzhou, China
| | - Yuxia Xiong
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China
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13
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A new biomarker candidate for spinal muscular atrophy: Identification of a peripheral blood cell population capable of monitoring the level of survival motor neuron protein. PLoS One 2018; 13:e0201764. [PMID: 30102724 PMCID: PMC6089418 DOI: 10.1371/journal.pone.0201764] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 07/20/2018] [Indexed: 01/01/2023] Open
Abstract
Spinal muscular atrophy (SMA) is a severe genetic neuromuscular disorder caused by insufficiency of functional survival motor neuron (SMN) protein. Several clinical trials have been conducted with the aim of upregulating the expression of the SMN protein in SMA patients. In order to evaluate the efficiency of these SMN-targeted approaches, it has become necessary to verify SMN protein levels in the cells of SMA patients. Accordingly, we have developed a method allowing the evaluation of the functional SMN protein with < 1.5 mL of peripheral blood using imaging flow cytometry. The expression of SMN protein in CD3+, CD19+, and CD33++ cells obtained from SMA patients, was significantly reduced compared with that in cells from control subjects. In spot analysis of CD33++ cells, the intensities of SMN spots were significantly reduced in SMA subjects, when compared with that in controls. Therefore, SMN spots implied the presence of functional SMN protein in the cell nucleus. To our knowledge, our results are the first to demonstrate the presence of functional SMN protein in freshly isolated peripheral blood cells. We anticipate that SMN spot analysis will become the primary endpoint assay for the evaluation and monitoring of therapeutic intervention, with SMN serving as a reliable biomarker of therapeutic efficacy in SMA patients.
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Pansani TN, Basso FG, Soares DG, Turrioni APDS, Hebling J, de Souza Costa CA. Photobiomodulation in the Metabolism of Lipopolysaccharides-exposed Epithelial Cells and Gingival Fibroblasts. Photochem Photobiol 2018; 94:598-603. [DOI: 10.1111/php.12877] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 11/27/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Taisa Nogueira Pansani
- Department of Dental Materials and Prosthodontics; Araraquara School of Dentistry; UNESP - Univ. Estadual Paulista; Araraquara SP Brazil
| | - Fernanda Gonçalves Basso
- Department of Physiology and Pathology; Araraquara School of Dentistry; UNESP - Univ. Estadual Paulista; Araraquara SP Brazil
| | - Diana Gabriela Soares
- Department of Dental Materials and Prosthodontics; Araraquara School of Dentistry; UNESP - Univ. Estadual Paulista; Araraquara SP Brazil
| | | | - Josimeri Hebling
- Department of Orthodontics and Pediatric Dentistry; Araraquara of Dentistry; UNESP - Univ. Estadual Paulista; Araraquara SP Brazil
| | - Carlos Alberto de Souza Costa
- Department of Physiology and Pathology; Araraquara School of Dentistry; UNESP - Univ. Estadual Paulista; Araraquara SP Brazil
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15
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Sun HL, Wu YR, Song FF, Gan J, Huang LY, Zhang L, Huang C. Role of PCSK9 in the Development of Mouse Periodontitis Before and After Treatment: A Double-Edged Sword. J Infect Dis 2017; 217:667-680. [DOI: 10.1093/infdis/jix574] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 12/01/2017] [Indexed: 01/30/2023] Open
Affiliation(s)
- Hua Ling Sun
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Hubei, People’s Republic of China
| | - Yan Ru Wu
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Hubei, People’s Republic of China
| | - Fang Fang Song
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Hubei, People’s Republic of China
| | - Jing Gan
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Hubei, People’s Republic of China
| | - Li Yuan Huang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Hubei, People’s Republic of China
| | - Lu Zhang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Hubei, People’s Republic of China
| | - Cui Huang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Hubei, People’s Republic of China
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16
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Mieszkowska A, Folkert J, Gaber T, Miksch K, Gurzawska K. Pectin nanocoating reduces proinflammatory fibroblast response to bacteria. J Biomed Mater Res A 2017; 105:3475-3481. [PMID: 28782183 DOI: 10.1002/jbm.a.36170] [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: 04/09/2017] [Revised: 06/30/2017] [Accepted: 08/01/2017] [Indexed: 12/18/2022]
Abstract
Implant failures are primarily related to bacterial infections and inflammation. Nanocoating of implant devices with organic molecules is a method used for improving their integration into host tissues and limiting inflammation. Bioengineered plant-derived rhamnogalacturonan-Is (RG-Is) from pectins improve tissue regeneration and exhibit anti-inflammatory properties. Therefore, the aim of this study is to evaluate the in vitro effect of RG-I nanocoating on human gingival primary fibroblast (HGF) activity and proinflammatory response following Porphyromonas gingivalis (P. gingivalis) infection. Infected HGFs were incubated on tissue culture polystyrene (TCPS) plates coated with unmodified RG-I isolated from potato pectin (PU) and dearabinanated RG-I (PA). HGF morphology, proliferation, metabolic activity, and expression of genes responsible for extracellular matrix (ECM) turnover and proinflammatory response were examined. Following the P. gingivalis infection, PU and PA significantly promoted HGF proliferation and metabolic activity. Moreover, gene expression levels of IL1B, IL8, TNFA, and MMP2 decreased in the infected cells cultured on PU and PA, whereas the expression of COL1A1, FN1, and FGFR1 was upregulated. The results indicate that RG-Is are promising candidates for nanocoating of an implant surface, can reduce inflammation, and enhance implant integration, particularly in medically compromised patients with chronic inflammatory diseases such as periodontitis and rheumatoid arthritis. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 3475-3481, 2017.
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Affiliation(s)
- A Mieszkowska
- Environmental Biotechnology Department, Faculty of Energy and Environmental Engineering, Silesian University of Technology, Gliwice 44-100, Poland
| | - J Folkert
- Environmental Biotechnology Department, Faculty of Energy and Environmental Engineering, Silesian University of Technology, Gliwice 44-100, Poland
| | - T Gaber
- Department of Rheumatology and Clinical Immunology, Charité University Medicine, Berlin 10117, Germany
| | - K Miksch
- Environmental Biotechnology Department, Faculty of Energy and Environmental Engineering, Silesian University of Technology, Gliwice 44-100, Poland
| | - K Gurzawska
- Oral Surgery Department, Birmingham Dental School and Hospital, University of Birmingham, Birmingham B46NN, United Kingdom
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17
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Kim JJ, Ben Amara H, Schwarz F, Kim HY, Lee JW, Wikesjö UME, Koo KT. Is ridge preservation/augmentation at periodontally compromised extraction sockets safe? A retrospective study. J Clin Periodontol 2017. [PMID: 28643883 DOI: 10.1111/jcpe.12764] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVES This study aimed to evaluate the safety of ridge preservation/augmentation procedures when performed at compromised extraction sockets. METHODS Patients subject to ridge preservation/augmentation at periodontally compromised sockets at Seoul National University Dental Hospital (SNUDH) were evaluated in a chart review. Tooth extractions due to acute infection were not included in our study as chronically formed lesions are the only lesions that can be detected from radiographic images. If inflammatory symptoms persisted following ridge preservation/augmentation and antimicrobial and anti-inflammatory therapy, the patient was categorized as a re-infection case and implanted biomaterial removed. RESULTS Of 10,060 patients subject to tooth extractions at SNUDH, 2011 through 2015, 297 cases meeting inclusion criteria were reviewed. The severity and type of lesions were not specific because extracting data was only done by radiographic images and chart records. The review identified eight patients exhibiting inflammatory symptoms that required additional antimicrobial and anti-inflammatory therapy. Within this group, re-infection occurred in two patients requiring biomaterials removal. The final safety rate for the ridge preservation/augmentation was 99.3%. None of the demographic factors, systemic conditions or choice of biomaterial affected the safety of ridge preservation/augmentation. CONCLUSION Alveolar ridge preservation/augmentation at periodontally compromised sockets appears safe following thorough removal of infectious source.
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Affiliation(s)
- Jung-Ju Kim
- Department of Periodontology and Dental Research Institute, Translational Research Laboratory for Tissue Engineering (TTE), School of Dentistry, Seoul National University, Seoul, Korea
| | - Heithem Ben Amara
- Department of Periodontology and Dental Research Institute, Translational Research Laboratory for Tissue Engineering (TTE), School of Dentistry, Seoul National University, Seoul, Korea
| | - Frank Schwarz
- Department of Oral Surgery, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - Hae-Young Kim
- Department of Dental Laboratory Science and Engineering, College of Health Science, Korea University, Seoul, Korea
| | - Jung-Won Lee
- Department of Periodontology and Dental Research Institute, Translational Research Laboratory for Tissue Engineering (TTE), School of Dentistry, Seoul National University, Seoul, Korea
| | - Ulf M E Wikesjö
- Laboratory for Applied Periodontal & Craniofacial Regeneration (LAPCR), Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Ki-Tae Koo
- Department of Periodontology and Dental Research Institute, Translational Research Laboratory for Tissue Engineering (TTE), School of Dentistry, Seoul National University, Seoul, Korea
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18
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Pansani TN, Basso FG, Soares DG, Hebling J, Costa CADS. Functional Differences In Gingival Fibroblasts Obtained from Young and Elderly Individuals. Braz Dent J 2016; 27:485-491. [DOI: 10.1590/0103-6440201600993] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 07/27/2016] [Indexed: 12/31/2022] Open
Abstract
Abstract Fibroblasts participate in the wound repair process through proliferation and migration as well as the synthesis of factors growth and extracellular matrix molecules. However, cell aging and the individual himself can lead to reduction of cell functions and consequently, the ability of tissue repair. This study evaluated the activity of gingival fibroblasts from young (Y) and elderly (Y) patients and their responsiveness to tumor necrosis factor alpha (TNF-a). Gingival fibroblasts were isolated from six patients (3Y; and 3E) and seeded in complete culture medium (DMEM). For cell viability analysis, total protein production and collagen synthesis, fibroblasts were cultured in 96-well plates for 24, 48 or 72 h (n=36). Cell responses to TNF-a, was evaluated by application of this cytokine to cultured cells (100 ng/mL) for 24 h, followed by evaluation of reactive oxygen species (ROS), nitric oxide (NO) and CCL5 production (n=36). Data were analyzed by Kruskal-Wallis and the Mann-Whitney U tests (a = 0.05). Viability of E fibroblasts was higher than Y fibroblasts for 24 and 48 h, but these cells showed gradual reduction of viability over the course of time. For Y cells, reduced collagen synthesis was observed at 48 h. No difference was observed in ROS production for both cells after TNF-a exposure. However, both cultures showed increased production of NO and CCL5 in the presence of TNF-a. Functional differences and distinct responsiveness to TNF-a were observed according to patient's age.
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19
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Gruber R, Stadlinger B, Terheyden H. Cell-to-cell communication in guided bone regeneration: molecular and cellular mechanisms. Clin Oral Implants Res 2016; 28:1139-1146. [PMID: 27550738 DOI: 10.1111/clr.12929] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2016] [Indexed: 12/19/2022]
Abstract
This overview provides insights into the molecular and cellular mechanisms involved in guided bone regeneration, in particular focusing on aspects presented in the 3D movie, Cell-To-Cell Communication in Guided Bone Regeneration. The information presented here is based almost exclusively on genetic mouse models in which single genes can be deleted or overexpressed, even in a specific cell type. This information needs to be extrapolated to humans and related to aspects relevant to graft consolidation under the clinical parameters of guided bone regeneration. The overview follows the ground tenor of the Cell-To-Cell Communication series and focuses on aspects of cell-to-cell communication in bone regeneration and guided bone regeneration. Here, we discuss (1) the role of inflammation during bone regeneration, including (2) the importance of the fibrin matrix, and (3) the pleiotropic functions of macrophages. We highlight (4) the origin of bone-forming osteoblasts and bone-resorbing osteoclasts as well as (5) what causes a progenitor cell to mature into an effector cell. (6) We touch on the complex bone adaptation and maintenance after graft consolidation and (7) how osteocytes control this process. Finally, we speculate on (8) how barrier membranes and the augmentation material can modulate graft consolidation.
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Affiliation(s)
- Reinhard Gruber
- Department of Oral Biology, Medical University of Vienna, Vienna, Austria.,Department of Preventive, Restorative and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Bernd Stadlinger
- Clinic of Cranio-Maxillofacial and Oral Surgery, University of Zurich, Zurich, Switzerland
| | - Hendrik Terheyden
- Department of Oral & Maxillofacial Surgery, Red Cross Hospital, Kassel, Germany
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20
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Kim JY, Lee MS, Baek JM, Park J, Youn BS, Oh J. Massive elimination of multinucleated osteoclasts by eupatilin is due to dual inhibition of transcription and cytoskeletal rearrangement. Bone Rep 2015; 3:83-94. [PMID: 28377971 PMCID: PMC5365243 DOI: 10.1016/j.bonr.2015.10.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 09/16/2015] [Accepted: 10/04/2015] [Indexed: 12/11/2022] Open
Abstract
Osteoporosis is an aging-associated disease requiring better therapeutic modality. Eupatilin is a major flavonoid from Artemisia plants such as Artemisia princeps and Artemisia argyi which has been reported to possess various beneficial biological effects including anti-inflammation, anti-tumor, anti-cancer, anti-allergy, and anti-oxidation activity. Complete blockade of RANK-dependent osteoclastogenesis was accomplished upon stimulation prior to the receptor activator of nuclear factor κB (RANK)-ligand (RANKL) treatment or post-stimulation of bone marrow macrophages (BMCs) in the presence of RANKL with eupatilin. This blockade was accompanied by inhibition of rapid phosphorylation of Akt, GSK3β, ERK and IκB as well as downregulation of c-Fos and NFATc1 at protein, suggesting that transcriptional suppression is a key mechanism for anti-osteoclastogenesis. Transient reporter assays or gain of function assays confirmed that eupatilin was a potent transcriptional inhibitor in osteoclasts (OC). Surprisingly, when mature osteoclasts were cultured on bone scaffolds in the presence of eupatilin, bone resorption activity was also completely blocked by dismantling the actin rings, suggesting that another major acting site of eupatilin is cytoskeletal rearrangement. The eupatilin-treated mature osteoclasts revealed a shrunken cytoplasm and accumulation of multi-nuclei, eventually becoming fibroblast-like cells. No apoptosis occurred. Inhibition of phosphorylation of cofilin by eupatilin suggests that actin may play an important role in the morphological change of multinucleated cells (MNCs). Human OC similarly responded to eupatilin. However, eupatilin has no effects on osteoblast differentiation and shows cytotoxicity on osteoblast in the concentration of 50 μM. When eupatilin was administered to LPS-induced osteoporotic mice after manifestation of osteoporosis, it prevented bone loss. Ovariectomized (OVX) mice remarkably exhibited bone protection effects. Taken together, eupatilin is an effective versatile therapeutic intervention for osteoporosis via; 1) transcriptional suppression of c-Fos and NFATc1 of differentiating OC and 2) inhibition of actin rearrangement of pathogenic MNCs. Eupatilin exhibits a potent inhibitory effect on differentiation of mouse and human osteoclasts. Eupatilin inhibits osteoclastogenesis via modulation of both transcriptional repression and actin polymerization. Eupatilin treatment shows preventive or therapeutic modality for osteoporosis in LPS-induced and OVX-induced bone loss mice model. Eupatilin may be a potential therapeutic treatment for excessive osteoclastic bone diseases.
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Key Words
- ALP, alkaline phosphatase
- Actin depolymerization;
- BMCs, bone marrow cells
- BMMs, bone marrow macrophages
- Cytoskeletal rearrangement
- FBS, fetal bovine serum
- H&E, hematoxylin and eosin
- HDACis, Histone deacetylase inhibitors
- LPS, lipopolysaccharide
- M-CSF, macrophage colony-stimulating factor
- MNCs, multinucleated cells
- NFATc1, nuclear factor of activated T cells c1
- OB, osteoblasts
- OC, osteoclasts
- OVX, ovariectomized
- Osteoclastogenesis;
- PGE2, prostaglandin E2
- RANK, the receptor activator of nuclear factor κB
- RANKL, RANK ligand
- SD, standard deviation
- SE, standard error
- SOST, sclerostin
- TBST, tris-buffered saline contacting 0.1% Tween-20
- TRAP, tartrate-resistant acid phosphate
- Transcriptional repression;
- XTT, sodium3’-[1-(phenyl-aminocarbonyl)-3,4-tetrazolium]-bis(4-methoxy-6-nitro)
- α-MEM, α-minimum essential medium
- μCT, micro-computed tomography
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Affiliation(s)
- Ju-Young Kim
- Imaging Science-based Lung and Bone Diseases Research Center, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Myeung Su Lee
- Imaging Science-based Lung and Bone Diseases Research Center, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; Division of Rheumatology, Department of Internal Medicine, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; Institute for Skeletal Disease, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Jong Min Baek
- Department of Anatomy, School of Medicine, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Jongtae Park
- Department of Neurosurgery, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Byung-Soo Youn
- Biomedical Research Center, University of Ulsan College of Medicine, Ulsan University Hospital, 877 Bangeojinsunwhando-ro, Dong-Ku, Ulsan 682-714, Republic of Korea; OsteoNeuroGen 40 MiKeum-ro, Bundang, Kyunggi 461-871, Republic of Korea
| | - Jaemin Oh
- Imaging Science-based Lung and Bone Diseases Research Center, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; Division of Rheumatology, Department of Internal Medicine, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; Institute for Skeletal Disease, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; Department of Anatomy, School of Medicine, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
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21
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Basso F, Soares D, Pansani T, Turrioni A, Scheffel D, de Souza Costa C, Hebling J. Effect of LPS treatment on the viability and chemokine synthesis by epithelial cells and gingival fibroblasts. Arch Oral Biol 2015; 60:1117-21. [DOI: 10.1016/j.archoralbio.2015.04.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 11/04/2014] [Accepted: 04/22/2015] [Indexed: 12/01/2022]
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22
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van Eekeren P, Tahmaseb A, Wismeijer D. Crestal bone changes in macrogeometrically similar implants with the implant-abutment connection at the crestal bone level or 2.5 mm above: a prospective randomized clinical trial. Clin Oral Implants Res 2015; 27:1479-1484. [DOI: 10.1111/clr.12581] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2015] [Indexed: 01/13/2023]
Affiliation(s)
- Paul van Eekeren
- Section of Oral Implantology and Fixed Prosthetics; Department of Oral Function; Academic Centre of Dentistry Amsterdam; Amsterdam The Netherlands
| | - Ali Tahmaseb
- Section of Oral Implantology and Fixed Prosthetics; Department of Oral Function; Academic Centre of Dentistry Amsterdam; Amsterdam The Netherlands
| | - Daniël Wismeijer
- Section of Oral Implantology and Fixed Prosthetics; Department of Oral Function; Academic Centre of Dentistry Amsterdam; Amsterdam The Netherlands
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23
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Bosshardt DD, Stadlinger B, Terheyden H. Cell-to-cell communication--periodontal regeneration. Clin Oral Implants Res 2015; 26:229-39. [PMID: 25639287 DOI: 10.1111/clr.12543] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/04/2014] [Indexed: 01/11/2023]
Abstract
BACKGROUND Although regenerative treatment options are available, periodontal regeneration is still regarded as insufficient and unpredictable. AIM This review article provides scientific background information on the animated 3D film Cell-to-Cell Communication - Periodontal Regeneration. RESULTS Periodontal regeneration is understood as a recapitulation of embryonic mechanisms. Therefore, a thorough understanding of cellular and molecular mechanisms regulating normal tooth root development is imperative to improve existing and develop new periodontal regenerative therapies. However, compared to tooth crown and earlier stages of tooth development, much less is known about the development of the tooth root. The formation of root cementum is considered the critical element in periodontal regeneration. Therefore, much research in recent years has focused on the origin and differentiation of cementoblasts. Evidence is accumulating that the Hertwig's epithelial root sheath (HERS) has a pivotal role in root formation and cementogenesis. Traditionally, ectomesenchymal cells in the dental follicle were thought to differentiate into cementoblasts. According to an alternative theory, however, cementoblasts originate from the HERS. What happens when the periodontal attachment system is traumatically compromised? Minor mechanical insults to the periodontium may spontaneously heal, and the tissues can structurally and functionally be restored. But what happens to the periodontium in case of periodontitis, an infectious disease, after periodontal treatment? A non-regenerative treatment of periodontitis normally results in periodontal repair (i.e., the formation of a long junctional epithelium) rather than regeneration. Thus, a regenerative treatment is indicated to restore the original architecture and function of the periodontium. Guided tissue regeneration or enamel matrix proteins are such regenerative therapies, but further improvement is required. As remnants of HERS persist as epithelial cell rests of Malassez in the periodontal ligament, these epithelial cells are regarded as a stem cell niche that can give rise to new cementoblasts. Enamel matrix proteins and members of the transforming growth factor beta (TGF-ß) superfamily have been implicated in cementoblast differentiation. CONCLUSION A better knowledge of cell-to-cell communication leading to cementoblast differentiation may be used to develop improved regenerative therapies to reconstitute periodontal tissues that were lost due to periodontitis.
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Affiliation(s)
- Dieter D Bosshardt
- Robert K. Schenk Laboratory of Oral Histology, University of Bern, Bern, Switzerland; Department of Periodontology, University of Bern, Bern, Switzerland; Department of Oral Surgery and Stomatology, University of Bern, Bern, Switzerland
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24
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Donovan TE, Marzola R, Becker W, Cagna DR, Eichmiller F, McKee JR, Metz JE, Albouy JP. Annual review of selected scientific literature: report of the Committee on Scientific Investigation of the American Academy of Restorative Dentistry. J Prosthet Dent 2014; 112:1038-87. [PMID: 25443419 DOI: 10.1016/j.prosdent.2014.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 09/02/2014] [Accepted: 09/02/2014] [Indexed: 12/14/2022]
Affiliation(s)
- Terence E Donovan
- Chair, Committee on Scientific Investigation, American Academy of Restorative Dentistry (AARD); Professor and Section Head for Biomaterials, Department of Operative Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC.
| | | | - William Becker
- Clinical Professor, Advanced Education in Prosthodontics, Herman Ostrow School of Dentistry, University of Southern California; private practice, Tucson, Ariz
| | - David R Cagna
- Associate Dean, Professor and Director, Advanced Prosthodontics, University of Tennessee, Health Science Center, College of Dentistry, Memphis, Tenn
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