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Almeida LKY, Battaglino RA, Araujo LDC, Lucisano MP, Massoni VV, da Silva LAB, Nelson-Filho P, Morse LR, da Silva RAB. TLR2 agonist prevents the progression of periapical lesions in mice by reducing osteoclast activity and regulating the frequency of Tregs. Int Endod J 2024; 57:328-343. [PMID: 38236318 DOI: 10.1111/iej.14015] [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: 09/08/2023] [Revised: 12/08/2023] [Accepted: 12/18/2023] [Indexed: 01/19/2024]
Abstract
AIM To evaluate the role of regulatory T lymphocytes (Tregs) in the presence or absence of the synthetic ligand Pam3Cys during the progression of periapical lesion in wild-type (WT) and toll-like receptor 2 knockout (TLR2KO) mice. METHODOLOGY A total of 130 C57BL/6 male WT and TLR2KO mice were allocated into control (n = 5) and experimental (periapical lesion induction) (n = 10) groups. In specific groups (WT+Pam3cys and TLR2KO+Pam3cys), the synthetic ligand Pam3cys was administered intraperitoneally every 7 days, according to the experimental period (14, 21 and 42 days). At the end of those periods, the animals were euthanized, and the mandible and the spleen were submitted to histotechnical processing. Mandible histological sections were analysed by haematoxylin and eosin, TRAP histoenzymology and immunohistochemistry (FOXP3, RANK, RANKL and OPG). Spleen sections were analysed by immunohistochemistry (FOXP3). RESULTS The inflammatory infiltrate and bone resorption were more intense in the TLR2KO group compared to the WT group. The animals that received the Pam3cys had smaller periapical lesions when compared to the animals that did not receive the ligand (p < .05). TLR2KO animals showed a significant increase in the number of osteoclasts when compared to TLR2KO+Pam3cys group (p < .05). At 21 days, the WT+Pam3cys group had a lower number of osteoclasts when compared to the WT animals (p = .02). FOXP3 expression was more intense in the WT+Pam3cys groups when compared to the WT animals in the 42 days (p = .03). In the spleen analysis, the WT+Pam3cys group also had a higher expression of FOXP3 when compared to the WT animals at 14 and 42 days (p = .02). Concerning RANKL, there was a reduction in staining in the KOTLR2+Pam3cys groups at 21 and 42 days (p = .03) and a higher binding ratio between RANK/RANKL in animals that did not receive the ligand. CONCLUSION Administration of the Pam3cys increased the proliferation of Tregs, showed by FOXP3 expression and prevented the progression of the periapical lesion in WT mice. On the other hand, in the TLR2KO animals, Treg expression was lower with larger areas of periapical lesions. Finally, systemic administration of the Pam3cys in KO animals was able to limit the deleterious effects of the absence of the TLR2 receptor.
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Affiliation(s)
- Lana Kei Yamamoto Almeida
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Ricardo Anibal Battaglino
- Department of Rehabilitation Medicine, School of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Lisa Danielly Curcino Araujo
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Marília Pacífico Lucisano
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Vivian Vicentin Massoni
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Léa Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Paulo Nelson-Filho
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Leslie Rae Morse
- Department of Rehabilitation Medicine, School of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Raquel Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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Dal-Fabbro R, Swanson WB, Capalbo LC, Sasaki H, Bottino MC. Next-generation biomaterials for dental pulp tissue immunomodulation. Dent Mater 2023; 39:333-349. [PMID: 36894414 PMCID: PMC11034777 DOI: 10.1016/j.dental.2023.03.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/24/2023] [Accepted: 03/03/2023] [Indexed: 03/09/2023]
Abstract
OBJECTIVES The current standard for treating irreversibly damaged dental pulp is root canal therapy, which involves complete removal and debridement of the pulp space and filling with an inert biomaterial. A regenerative approach to treating diseased dental pulp may allow for complete healing of the native tooth structure and enhance the long-term outcome of once-necrotic teeth. The aim of this paper is, therefore, to highlight the current state of dental pulp tissue engineering and immunomodulatory biomaterials properties, identifying exciting opportunities for their synergy in developing next-generation biomaterials-driven technologies. METHODS An overview of the inflammatory process focusing on immune responses of the dental pulp, followed by periapical and periodontal tissue inflammation are elaborated. Then, the most recent advances in treating infection-induced inflammatory oral diseases, focusing on biocompatible materials with immunomodulatory properties are discussed. Of note, we highlight some of the most used modifications in biomaterials' surface, or content/drug incorporation focused on immunomodulation based on an extensive literature search over the last decade. RESULTS We provide the readers with a critical summary of recent advances in immunomodulation related to pulpal, periapical, and periodontal diseases while bringing light to tissue engineering strategies focusing on healing and regenerating multiple tissue types. SIGNIFICANCE Significant advances have been made in developing biomaterials that take advantage of the host's immune system to guide a specific regenerative outcome. Biomaterials that efficiently and predictably modulate cells in the dental pulp complex hold significant clinical promise for improving standards of care compared to endodontic root canal therapy.
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Affiliation(s)
- Renan Dal-Fabbro
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA.
| | - W Benton Swanson
- Department of Biologic and Materials Science, Division of Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA.
| | - Leticia C Capalbo
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Hajime Sasaki
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA.
| | - Marco C Bottino
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, MI, USA.
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Horie M, Chiba R, Umemoto S, Tajika M. Particulate beta-tricalcium phosphate and hydroxyapatite doped with silver promote in vitro osteoblast differentiation in MC3T3-E1 cells. Biomed Mater Eng 2023; 34:385-398. [PMID: 37125541 DOI: 10.3233/bme-211376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
BACKGROUND Calcium phosphates including β-tricalcium phosphate (β-TCP) and hydroxyapatite (HAp) have been widely used for bone regeneration application because of their high osteoconductive activities. In addition, various kinds of inorganic ions enhance differentiation, proliferation, and mineralization of osteoblasts. However, information about the effects of silver-doped β-TCP [β-TCP (Ag)] and HAp [HAp (Ag)] particles on osteogenic differentiation is not available yet. OBJECTIVE We focused on the impact of β-TCP (Ag) and HAp (Ag) particles on the osteogenic differentiation of MC3T3-E1 osteoblast precursor cells. METHODS MC3T3-E1 osteoblast precursor cells were pre-treated by β-TCP (Ag) or HAp (Ag). And then the medium was changed to differentiation medium. Subsequently, osteoblast differentiation-related markers were determined. RESULTS We found that treatment with β-TCP (Ag) or HAp (Ag) particles increased alkaline phosphatase activity in MC3T3-E1 cells. Expression of osteoblast differentiation-related genes also increased after treatment with β-TCP (Ag) or HAp (Ag) particles, a response thought to be regulated by zinc finger-containing transcription factor osterix. The ratio of the receptor activator of nuclear factor kappa-B ligand (RANKL) to osteoprotegerin (OPG) was decreased by β-TCP (Ag) and HAp (Ag) particles. CONCLUSION Silver doping of β-TCP and HAp particles is effective for bone regeneration.
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Affiliation(s)
- Masanori Horie
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Takamatsu, Japan
| | - Ryo Chiba
- Shiraishi Central Laboratories Co., Ltd., Amagasaki, Japan
| | - Shota Umemoto
- Shiraishi Central Laboratories Co., Ltd., Amagasaki, Japan
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Austah ON, Lillis KV, Akopian AN, Harris SE, Grinceviciute R, Diogenes A. Trigeminal neurons control immune-bone cell interaction and metabolism in apical periodontitis. Cell Mol Life Sci 2022; 79:330. [PMID: 35639178 PMCID: PMC9156470 DOI: 10.1007/s00018-022-04335-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/24/2022] [Accepted: 04/28/2022] [Indexed: 12/14/2022]
Abstract
Abstract Apical periodontitis (AP) is an inflammatory disease occurring following tooth infection with distinct osteolytic activity. Despite increasing evidence that sensory neurons participate in regulation of non-neuronal cells, their role in the development of AP is largely unknown. We hypothesized that trigeminal ganglia (TG) Nav1.8+ nociceptors regulate bone metabolism changes in response to AP. A selective ablation of nociceptive neurons in Nav1.8Cre/Diphtheria toxin A (DTA)Lox mouse line was used to evaluate the development and progression of AP using murine model of infection-induced AP. Ablation of Nav1.8+ nociceptors had earlier progression of AP with larger osteolytic lesions. Immunohistochemical and RNAscope analyses demonstrated greater number of macrophages, T-cells, osteoclast and osteoblast precursors and an increased RANKL:OPG ratio at earlier time points among Nav1.8Cre/ DTALox mice. There was an increased expression of IL-1α and IL-6 within lesions of nociceptor-ablated mice. Further, co-culture experiments demonstrated that TG neurons promoted osteoblast mineralization and inhibited osteoclastic function. The findings suggest that TG Nav1.8+ neurons contribute to modulation of the AP development by delaying the influx of immune cells, promoting osteoblastic differentiation, and decreasing osteoclastic activities. This newly uncovered mechanism could become a therapeutic strategy for the treatment of AP and minimize the persistence of osteolytic lesions in refractory cases. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1007/s00018-022-04335-w.
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Affiliation(s)
- Obadah N Austah
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA.,Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Katherine V Lillis
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA
| | - Armen N Akopian
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA
| | - Stephen E Harris
- Department of Periodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Ruta Grinceviciute
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA
| | - Anibal Diogenes
- Department of Endodontics, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA.
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Fan Y, Cui C, Rosen CJ, Sato T, Xu R, Li P, Wei X, Bi R, Yuan Q, Zhou C. Klotho in Osx +-mesenchymal progenitors exerts pro-osteogenic and anti-inflammatory effects during mandibular alveolar bone formation and repair. Signal Transduct Target Ther 2022; 7:155. [PMID: 35538062 PMCID: PMC9090922 DOI: 10.1038/s41392-022-00957-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/03/2022] [Accepted: 03/06/2022] [Indexed: 02/08/2023] Open
Abstract
Maxillofacial bone defects are commonly seen in clinical practice. A clearer understanding of the regulatory network directing maxillofacial bone formation will promote the development of novel therapeutic approaches for bone regeneration. The fibroblast growth factor (FGF) signalling pathway is critical for the development of maxillofacial bone. Klotho, a type I transmembrane protein, is an important components of FGF receptor complexes. Recent studies have reported the presence of Klotho expression in bone. However, the role of Klotho in cranioskeletal development and repair remains unknown. Here, we use a genetic strategy to report that deletion of Klotho in Osx-positive mesenchymal progenitors leads to a significant reduction in osteogenesis under physiological and pathological conditions. Klotho-deficient mensenchymal progenitors also suppress osteoclastogenesis in vitro and in vivo. Under conditions of inflammation and trauma-induced bone loss, we find that Klotho exerts an inhibitory function on inflammation-induced TNFR signaling by attenuating Rankl expression. More importantly, we show for the first time that Klotho is present in human alveolar bone, with a distinct expression pattern under both normal and pathological conditions. In summary, our results identify the mechanism whereby Klotho expressed in Osx+-mensenchymal progenitors controls osteoblast differentiation and osteoclastogenesis during mandibular alveolar bone formation and repair. Klotho-mediated signaling is an important component of alveolar bone remodeling and regeneration. It may also be a target for future therapeutics.
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Affiliation(s)
- Yi Fan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Chen Cui
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Stomatology, 510055, Guangzhou, Guangdong, China
| | - Clifford J Rosen
- Maine Medical Center Research Institute, Scarborough, ME, 04074, USA
| | - Tadatoshi Sato
- Endocrine Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02215, USA
| | - Ruoshi Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Peiran Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Xi Wei
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Stomatology, 510055, Guangzhou, Guangdong, China
| | - Ruiye Bi
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Quan Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China.
| | - Chenchen Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China.
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Ikeda M, Karakawa A, Takizawa H, Azetsu Y, Sakai N, Chatani M, Suzuki N, Takami M. Effects of Anti-RANKL Antibody and Zoledronic Acid on Periapical Lesion Development in Mice. J Endod 2022; 48:632-640. [PMID: 35181456 DOI: 10.1016/j.joen.2022.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/04/2022] [Accepted: 02/06/2022] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Anti-resorptive drugs are widely used to treat osteoporosis and other systemic bone diseases, though their efficacy for local bone resorption following localized inflammation has not been fully elucidated. We examined the effects of an anti-receptor activator of nuclear factor-κB ligand (RANKL) antibody and the bisphosphonate zoledronic acid (ZOL) on periapical lesion (PL) development in mice. METHODS Dental pulps of lower first molars in mice were removed, with the exposed dental pulp chambers left open to the oral environment to induce apical periodontitis. An anti-RANKL antibody or ZOL was intraperitoneally injected once per week until postoperative day 21, then micro-computed tomography and histological analyses were performed. RESULTS PL enlargement was inhibited by both the anti-RANKL antibody and ZOL in a dose-dependent manner and reduction of inflammatory cell infiltration in apical tissues inhibited periapical bone resorption. The anti-RANKL antibody decreased the number of osteoclasts in periapical tissues, while ZOL suppressed periapical bone resorption with osteoclast numbers maintained. While administration of each of the anti-resorptive drugs increased femoral bone mass, femoral bone mineral density in the PL group was lower as compared to the sham-operated group. CONCLUSIONS These results suggest that an anti-resorptive drug administered systemically is distributed to areas of local inflammation in the jaw and can prevent PL development.
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Affiliation(s)
- Megumi Ikeda
- Division of Endodontics, Department of Conservative Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan; Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
| | - Akiko Karakawa
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan.
| | - Hideomi Takizawa
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan; Department of Orthodontics, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan
| | - Yuki Azetsu
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
| | - Nobuhiro Sakai
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
| | - Masahiro Chatani
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
| | - Noriyuki Suzuki
- Division of Endodontics, Department of Conservative Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan.
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Chen Y, Huang Z, Tang Z, Huang Y, Huang M, Liu H, Ziebolz D, Schmalz G, Jia B, Zhao J. More Than Just a Periodontal Pathogen –the Research Progress on Fusobacterium nucleatum. Front Cell Infect Microbiol 2022; 12:815318. [PMID: 35186795 PMCID: PMC8851061 DOI: 10.3389/fcimb.2022.815318] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/17/2022] [Indexed: 12/14/2022] Open
Abstract
Fusobacterium nucleatum is a common oral opportunistic bacterium that can cause different infections. In recent years, studies have shown that F. nucleatum is enriched in lesions in periodontal diseases, halitosis, dental pulp infection, oral cancer, and systemic diseases. Hence, it can promote the development and/or progression of these conditions. The current study aimed to assess research progress in the epidemiological evidence, possible pathogenic mechanisms, and treatment methods of F. nucleatum in oral and systemic diseases. Novel viewpoints obtained in recent studies can provide knowledge about the role of F. nucleatum in hosts and a basis for identifying new methods for the diagnosis and treatment of F. nucleatum-related diseases.
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Affiliation(s)
- Yuanxin Chen
- Department of Oral Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Zhijie Huang
- Department of Oral Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Zhengming Tang
- Department of Oral Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Yisheng Huang
- Department of Oral Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Mingshu Huang
- Department of Oral Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Hongyu Liu
- Department of Oral Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Dirk Ziebolz
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Leipzig, Germany
| | - Gerhard Schmalz
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Leipzig, Germany
| | - Bo Jia
- Department of Oral Surgery, Stomatological Hospital, Southern Medical University, Guangzhou, China
- *Correspondence: Bo Jia, ; Jianjiang Zhao,
| | - Jianjiang Zhao
- Shenzhen Stomatological Hospital, Southern Medical University, Shenzhen, China
- *Correspondence: Bo Jia, ; Jianjiang Zhao,
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Understanding the Role of Metalloproteinases and Their Inhibitors in Periodontology. Clin Rev Bone Miner Metab 2022. [DOI: 10.1007/s12018-021-09281-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Zivanovic S, Papic M, Vucicevic T, Miletic Kovacevic M, Jovicic N, Nikolic N, Milasin J, Paunovic V, Trajkovic V, Mitrovic S, Lukic ML, Lukic A, Ljujic B. Periapical lesions in two inbred strains of rats differing in immunological reactivity. Int Endod J 2021; 55:64-78. [PMID: 34614243 DOI: 10.1111/iej.13638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 09/25/2021] [Accepted: 09/27/2021] [Indexed: 12/13/2022]
Abstract
AIM To investigate the influence of strain differences in immune responses on the pathogenesis of experimental periapical lesions in Dark Agouti (DA) and Albino Oxford (AO) inbred strains of rats. METHODOLOGY Periapical lesions were induced in male DA and AO rats by pulp exposure of the first mandibular right molars to the oral environment. Animals were killed 21 days after pulp exposure. The mandibular jaws were retrieved and prepared for radiographic, pathohistological, immunohistochemical analysis, real-time PCR and flow cytometry. Blood samples and the supernatant of periapical lesions were collected for measurement of cytokines and oxidative stress marker levels. Statistical analysis was performed using the Kruskal-Wallis H and Mann-Whitney U non-parametric tests or parametric One-Way anova and Independent Samples T-test to determine the differences between groups depending on the normality of the data. A significant difference was considered when p values were <.05. RESULTS DA rats developed significantly larger (p < .05) periapical lesions compared to AO rats as confirmed by radiographic and pathohistological analysis. The immunohistochemical staining intensity for CD3 was significantly greater in periapical lesions of DA rats compared to AO rats (p < .05). In DA rats, periapical lesions had a significantly higher (p < .05) percentage of CD3+ cells compared to AO rats. Also, the percentage of INF-γ, IL-17 and IL-10 CD3+CD4+ cells was significantly higher in DA rats (p < .05). DA rats had a significantly higher Th17/Th10 ratio. RT-PCR expression of IL-1β, INF-γ and IL-17 genes was significantly higher in periapical lesions of DA compared to AO rats (p < .05). The receptor activator of nuclear factor kappa-Β ligand/osteoprotegerin ratio was higher in DA compared to AO rats with periapical lesions (p < .05). Systemic levels of TNF-α and IL-6 were significantly higher in DA compared to AO rats (p < .05). Levels of lipid peroxidation measured as thiobarbituric acid reactive substances and reduced glutathione were significantly higher (p < .05) in the supernatant in the periapical lesions of DA rats. CONCLUSION After pulp exposure, DA rats developed much larger periapical lesions compared to AO rats. Genetically determined differences in immunopathology have been demonstrated to be a significant element defining the severity of periapical lesions.
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Affiliation(s)
- Suzana Zivanovic
- Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Milos Papic
- Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Tamara Vucicevic
- Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Marina Miletic Kovacevic
- Department of Histology and Embryology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Nemanja Jovicic
- Department of Histology and Embryology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Nadja Nikolic
- Department of Biology and Human Genetics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Jelena Milasin
- Department of Biology and Human Genetics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Verica Paunovic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Slobodanka Mitrovic
- Department of Pathology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Miodrag L Lukic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Aleksandra Lukic
- Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Biljana Ljujic
- Department of Genetics, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
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Wongtim K, Ikeda E, Ohno T, Nagai S, Okuhara S, Kure K, Azuma M. Overexpression of PD-L1 in gingival basal keratinocytes reduces periodontal inflammation in a ligature-induced periodontitis model. J Periodontol 2021; 93:146-155. [PMID: 34021604 PMCID: PMC9292381 DOI: 10.1002/jper.21-0017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 05/19/2021] [Accepted: 05/19/2021] [Indexed: 01/29/2023]
Abstract
Background The immune checkpoint programmed cell death 1 (PD‐1): PD‐1 ligand 1 (PD‐L1) pathway plays a crucial role in maintaining immune tolerance and preventing tissue damages by excessive immune responses. PD‐L1 is physiologically expressed and upregulated in keratinocytes (KCs) in the oral cavity. We here investigated the contribution of PD‐L1 that was overexpressed in gingival basal KCs in a ligature‐induced periodontitis model. Methods Wild‐type (WT) BALB/c and K14/PD‐L1 transgenic (tg) mice, in which PD‐L1 was overexpressed in basal KCs under control of the keratin 14 promoter, were used. To induce periodontitis, a 9‐0 silk ligature was placed around the upper right second molar, and lipopolysaccharide from Porphyromonas gingivalis was applied on the suture. Gingival tissues were collected on day 7, after which histological analyses were performed, including by hematoxylin and eosin and tartrate‐resistant acid phosphate staining (TRAP) and quantitative PCR for proinflammatory cytokines and bone metabolism‐related genes. Alveolar bone loss at 7 weeks after ligature placement was assessed by micro‐computed tomography analysis. Results PD‐L1 was overexpressed in the basal KCs of all gingival epithelia in K14/PD‐L1tg mice. Early ligature‐induced periodontal inflammation, as assessed based on histological changes, elevation of proinflammatory cytokine (IL‐1β, IL‐6, TNF‐α) expression, periodontal ligament degeneration, and osteoclastogenesis as assessed by Rankl and Opg expression and TRAP+ cells, was markedly impaired in K14/PD‐L1tg mice. Alveolar bone resorption at a late time point was also clearly minimized in K14/PD‐L1tg mice. Conclusion Overexpression of PD‐L1 in gingival basal keratinocytes in K14/PD‐L1tg mice reduces periodontal inflammation and alveolar bone resorption in a ligature‐induced periodontitis model.
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Affiliation(s)
- Keeratika Wongtim
- Department of Molecular ImmunologyGraduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityTokyoJapan
| | - Eri Ikeda
- Department of PeriodontologyGraduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityTokyoJapan
| | - Tatsukuni Ohno
- Department of Molecular ImmunologyGraduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityTokyoJapan
| | - Shigenori Nagai
- Department of Molecular ImmunologyGraduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityTokyoJapan
| | - Shigeru Okuhara
- Department of Molecular Craniofacial EmbryologyGraduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityTokyoJapan
| | - Keitetsu Kure
- Department of PeriodontologyGraduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityTokyoJapan
| | - Miyuki Azuma
- Department of Molecular ImmunologyGraduate School of Medical and Dental SciencesTokyo Medical and Dental UniversityTokyoJapan
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11
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Jakovljevic A, Nikolic N, Jacimovic J, Miletic M, Andric M, Milasin J, Aminoshariae A, Azarpazhooh A. Tumor Necrosis Factor Alpha -308 G/A Single-Nucleotide Polymorphism and Apical Periodontitis: An Updated Systematic Review and Meta-analysis. J Endod 2021; 47:1061-1069. [PMID: 33775731 DOI: 10.1016/j.joen.2021.03.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/10/2021] [Accepted: 03/15/2021] [Indexed: 12/23/2022]
Abstract
INTRODUCTION This study aimed to perform a more precise estimation of the association between tumor necrosis factor alpha (TNF-α) -308 G/A single-nucleotide polymorphism (SNP) and the risk of development of apical periodontitis (AP) and its phenotypes based on all available published studies. METHODS The study was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and is registered in PROSPERO (CRD42020176190). The literature search was conducted via Clarivate Analytics Web of Science, Scopus, PubMed, Cochrane Central Register of Controlled Trials, and China National Knowledge Infrastructure databases from inception to December 2020 with no language restrictions. Two reviewers were involved independently in the study selection, data extraction, and appraising the studies that were included. The quality of the included studies was evaluated using the Strengthening the Reporting of Genetic Association and the Grading of Recommendations Assessment, Development and Evaluation system. The frequencies of the genotypes and alleles of the TNF-α (G>A 308, rs1800629) gene with 95% odds ratio were used. RESULTS Four studies met the inclusion criteria with moderate risk of bias. This study revealed no significant association between TNF-α -308 G/A SNP and AP and the risk of AP development. Moreover, there was no significant association between genotype or allele frequency distribution and clinical manifestations (acute vs chronic) of AP. The certainty of evidence per the Grading of Recommendations Assessment, Development and Evaluation system was very low. CONCLUSIONS Because of very low certainty of evidence, whether there is an association between TNF-α -308 G/A SNP and AP warrants further well-designed multicentric studies to adjudicate a better understanding of the role of genetic factors in the etiopathogenesis of AP.
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Affiliation(s)
- Aleksandar Jakovljevic
- Department of Pathophysiology, School of Dental Medicine, University of Belgrade, Belgrade, Serbia.
| | - Nadja Nikolic
- Department of Biology and Human Genetics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Jelena Jacimovic
- Central Library, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Maja Miletic
- Department of Pathophysiology, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Miroslav Andric
- Department of Oral Surgery, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Jelena Milasin
- Department of Biology and Human Genetics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Anita Aminoshariae
- Department of Endodontics, Case Western Reserve University School of Dental Medicine, Cleveland, Ohio
| | - Amir Azarpazhooh
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
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12
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Cilmiaty R, Pribadi N, Rukmo M, Surboyo MDC. The NFκB Expression on Apical Dental Granuloma: An Immunohistochemistry Analysis. Clin Cosmet Investig Dent 2020; 12:313-318. [PMID: 32848477 PMCID: PMC7425096 DOI: 10.2147/ccide.s256284] [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: 04/14/2020] [Accepted: 07/16/2020] [Indexed: 11/23/2022] Open
Abstract
Background Endodontic treatment on dental caries with dental granuloma on the periapical has the potential to flare. The symptoms of acute flare in dental granuloma are strongly related to the activation of macrophages that produce pro-inflammatory cytokine through nuclear factor kappa B (NFκB). However, the role of NFκB in dental granuloma has not been widely explained. Purpose To compare NFκB expression in dental granuloma and dental nongranuloma in the periapical of dental caries. Methods The periapical lesion of dental granuloma and dental nongranuloma was obtained from patients with dental caries who were subjected to tooth extraction. The periapical lesion was confirmed by periapical radiography and then differentiated by histological and immunohistochemistry by analyzing the NFκB expression. Results Most dental granulomas were found in females (66.67%) between the ages 36 and 45 (61.11%). Dental granuloma showed higher NFκB expression compared to dental nongranuloma lesions in tooth caries (p=0.021). Conclusion The dental granuloma tissue of dental caries showed an increase in NFκB expression. Understanding the role of NFκB might provide additional insights into the process of periapical lesion development.
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Affiliation(s)
- Risya Cilmiaty
- Department of Oral Disease, Faculty of Medicine, Universitas Sebelas Maret, Surakarta, Indonesia
| | - Nirawati Pribadi
- Department of Conservative Dentistry, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Mandojo Rukmo
- Department of Conservative Dentistry, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
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Sarmento EB, Gomes CC, Pires FR, Pinto LC, Antunes LAA, Armada L. Immunoexpression of bone resorption biomarkers in apical periodontitis in diabetics and normoglycaemics. Int Endod J 2020; 53:1025-1032. [DOI: 10.1111/iej.13305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 03/31/2020] [Indexed: 12/19/2022]
Affiliation(s)
- E. B. Sarmento
- School of Dentistry Fluminense Federal University Nova Friburgo Brazil
| | - C. C. Gomes
- School of Dentistry Fluminense Federal University Nova Friburgo Brazil
| | - F. R. Pires
- School of Dentistry Estácio de Sá University Rio de Janeiro Brazil
| | - L. C. Pinto
- School of Dentistry Fluminense Federal University Nova Friburgo Brazil
| | - L. A. A. Antunes
- School of Dentistry Fluminense Federal University Nova Friburgo Brazil
| | - L. Armada
- School of Dentistry Estácio de Sá University Rio de Janeiro Brazil
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14
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Paula-Silva FWG, Arnez MFM, Petean IBF, Almeida-Junior LA, da Silva RAB, da Silva LAB, Faccioli LH. Effects of 5-lipoxygenase gene disruption on inflammation, osteoclastogenesis and bone resorption in polymicrobial apical periodontitis. Arch Oral Biol 2020; 112:104670. [DOI: 10.1016/j.archoralbio.2020.104670] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 12/23/2019] [Accepted: 01/27/2020] [Indexed: 01/18/2023]
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15
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Jakovljevic A, Nikolic N, Carkic J, Andric M, Miletic M, Beljic-Ivanovic K, Jovanovic T, Milasin J. Notch - a possible mediator between Epstein-Barr virus infection and bone resorption in apical periodontitis. Acta Odontol Scand 2020; 78:126-131. [PMID: 31570027 DOI: 10.1080/00016357.2019.1658896] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objectives: This study aimed to investigate whether Epstein-Barr virus (EBV) positive periapical lesions exhibited higher mRNA levels of Notch signalling molecules (Notch2 and Jagged1), bone resorption regulators (receptor activator of nuclear factor kappa-β ligand (RANKL) and osteoprotegerin (OPG)), and proinflammatory cytokines (tumour necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β) and IL-6) compared to EBV negative lesions. Additionally, the potential correlation between investigated molecules in periapical lesions was analyzed.Materials and methods: Sixty-four apical periodontitis lesions were obtained subsequent to standard apicoectomy procedure. The presence of EBV was determined using nested PCR. Based on the presence of EBV all periapical lesions were divided into two groups, 29 EBV positive and 35 EBV negative lesions. A reverse transcriptase real-time PCR was used to determine mRNA levels of Notch2, Jagged1, RANKL, OPG, TNF-α, IL-1β and IL-6.Results: Significantly higher mRNA levels of Notch2, Jagged1, RANKL and IL-1β were observed in EBV positive compared to EBV negative lesions. Significant positive correlation was present between Notch2 and Jagged1, Jagged1 and RANKL, and IL-β and TNF-α in EBV positive periapical lesions.Conclusions: Notch signalling pathway may be involved in alveolar bone resorption in apical periodontitis lesions infected by EBV.
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Affiliation(s)
- Aleksandar Jakovljevic
- Department of Pathophysiology, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Nadja Nikolic
- Department of Biology and Human Genetics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Jelena Carkic
- Department of Biology and Human Genetics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Miroslav Andric
- Department of Oral Surgery, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Maja Miletic
- Department of Pathophysiology, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Katarina Beljic-Ivanovic
- Department of Restorative Odontology and Endodontics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Tanja Jovanovic
- Department of Virusology, Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Jelena Milasin
- Department of Biology and Human Genetics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
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16
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Uluköylü E, Karataş E, Albayrak M, Bayır Y. Effect of Calcium Hydroxide Alone or in Combination with Ibuprofen and Ciprofloxacin on Nuclear Factor Kappa B Ligand and Osteoprotegerin Level in Periapical Lesions: A Randomized Controlled Clinical Study. J Endod 2019; 45:1489-1495. [DOI: 10.1016/j.joen.2019.09.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 08/02/2019] [Accepted: 09/21/2019] [Indexed: 10/25/2022]
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17
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Dal-Fabbro R, Marques-de-Almeida M, Cosme-Silva L, Capalbo LC, Ervolino E, Cintra LTA, Gomes-Filho JE. Effects of different alcohol concentrations on the development of apical periodontitis in rats. Arch Oral Biol 2019; 108:104538. [PMID: 31476521 DOI: 10.1016/j.archoralbio.2019.104538] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/23/2019] [Accepted: 08/24/2019] [Indexed: 12/21/2022]
Abstract
AIM To investigate the effect of different alcohol concentrations on the development of apical periodontitis (AP) in rats. METHODS Forty Wistar rats were arranged into five groups: (C) - control rats receiving sterile water as the only liquid; (G5) - animals receiving an alcohol solution at 5%, (G10) - alcohol solution at 10%, (G15) - alcohol solution at 15%, and (G20) - alcohol solution at 20%. The alcoholic solution or water was given to the groups as the sole source of hydration throughout the 30 days of the experiment. AP was induced in the mandibular molars on the first day. In the end, the animals were euthanized for histopathological and IL-1b, RANKL, OPG, and TRAP analyses. The Kruskal-Wallis test was used for nonparametric data, and ANOVA followed by the Tukey test were performed for parametric data, p < 0.05. RESULTS G15 and G20 had a greater chronic inflammatory infiltrate (Score 3) and AP size bigger (1.59 ± 0.41 and 1.83 ± 0.38, respectively) than the C, G5 and G10 (p < 0.05). No significant difference was found in the IL-1b analyses. The G15 and G20 showed the highest immunolabeling pattern for RANKL and the lowest for OPG. The G20 had greater TRAP cells per mm (4.70 ± 0.99) compared to the C, G5, and G10 (p < 0.05). Furthermore, G15 presented 3.92 ± 0.64 TRAP cells/mm, higher than C (p < 0.05). CONCLUSIONS G5 and G10 did not exert a protective or aggravating effect on the AP development. However, G15 and G20 had a significant effect on the AP severity, exacerbating the inflammation and osteoclast markers.
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Affiliation(s)
- Renan Dal-Fabbro
- Department of Endodontics, São Paulo State University (Unesp) - School of Dentistry, Araçatuba, Brazil.
| | - Melyna Marques-de-Almeida
- Department of Endodontics, São Paulo State University (Unesp) - School of Dentistry, Araçatuba, Brazil
| | - Leopoldo Cosme-Silva
- Department of Endodontics, São Paulo State University (Unesp) - School of Dentistry, Araçatuba, Brazil; Department of Restorative Dentistry, Endodontics, School of Dentistry, Federal University of Alagoas, Alagoas, Brazil (UFAL)
| | - Letícia Cabrera Capalbo
- Department of Endodontics, São Paulo State University (Unesp) - School of Dentistry, Araçatuba, Brazil
| | - Edilson Ervolino
- Department of Basic Sciences, São Paulo State University (Unesp) - School of Dentistry, Araçatuba, Brazil
| | | | - João Eduardo Gomes-Filho
- Department of Endodontics, São Paulo State University (Unesp) - School of Dentistry, Araçatuba, Brazil.
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18
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Gegen T, Zhu Y, Sun Q, Hou B. Role of interleukin-33 in the clinical pathogenesis of chronic apical periodontitis. J Int Med Res 2019; 47:3332-3343. [PMID: 31218936 PMCID: PMC6683938 DOI: 10.1177/0300060519854630] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective This study investigated interleukin (IL)-33 expression in chronic apical periodontitis (CAP) lesions and possible relationships with receptor activator of nuclear factor κ-Β ligand (RANKL) and osteoprotegerin (OPG). Methods Inflammatory cell infiltration in CAP lesions and samples of healthy periapical tissue (n = 30 each) was evaluated by hematoxylin and eosin staining. IL-33, RANKL, and OPG expression levels were assessed by immunohistochemistry and real-time PCR. In CAP lesions alone, relationships between mRNA level of IL-33 and mRNA levels of both RANKL and OPG were analyzed by Spearman rank correlation. Results Histological analysis revealed a large number of inflammatory cells in CAP lesions, and immunohistochemistry revealed IL-33-positive cells. There were more IL-33- and RANKL-positive cells in CAP lesions than in healthy periapical tissue, whereas there were fewer OPG-positive cells in CAP lesions than in healthy periapical tissue. In CAP lesions alone, IL-33 mRNA level was negatively correlated with mRNA level of RANKL and positively correlated with mRNA level of OPG. Conclusions IL-33 is highly expressed in CAP lesions, where it is negatively correlated with RANKL and positively correlated with OPG expression. IL-33 may protect against bone resorption via RANKL suppression and OPG induction, and constitutes a potential target for CAP treatment.
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Affiliation(s)
- Tana Gegen
- Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Yanxia Zhu
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Qinnuan Sun
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Benxiang Hou
- Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
- Benxiang Hou, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China.
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19
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Sarıtekin E, Üreyen Kaya B, Aşcı H, Özmen Ö. Anti-inflammatory and antiresorptive functions of melatonin on experimentally induced periapical lesions. Int Endod J 2019; 52:1466-1478. [PMID: 31063611 DOI: 10.1111/iej.13138] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 05/01/2019] [Indexed: 12/30/2022]
Abstract
AIM To investigate the effects of systemically administered melatonin on inflammation and alveolar bone resorption in rats with experimentally induced periapical lesions. METHODOLOGY Thirty adult Sprague Dawley rats were divided equally into negative, positive control and melatonin groups. The pulp chambers of their mandibular first molars were exposed to the oral environment to induce experimental periapical lesions in the positive control and melatonin groups. The melatonin group received daily intraperitoneal injections of melatonin at a dose of 10 mg kg-1 . After 21 days, the animals were euthanized; the hemi-mandible parts were prepared for radiological, histopathological, immunohistochemical (IL-1β, RANK, RANKL, OPG and tartrate-resistant acid phosphatase (TRAP) and Brown-Brenn (bacteria) evaluations. Data were analysed by Kruskal-Wallis (for non-parametric data) and one-way anova tests (for parametric data) (P < 0.05). RESULTS The area of radiographic periapical bone loss was significantly smaller in rats that were given daily intraperitoneal injections of melatonin (P < 0.01). The histopathological scores of the melatonin group were significantly lower than those of positive control group (P < 0.01). Histomorphometrically, the area of periapical bone loss in the melatonin group was significantly smaller than the positive control group (P < 0.01). The expression of IL1-β, RANK and RANKL was significantly higher in the positive control group, whereas OPG was significantly higher in the melatonin group (P < 0.01). The number of osteoclasts was significantly greater in the positive control group by TRAP staining analyses (P < 0.01). The scores for bacteria localization using Brown-Brenn staining in the melatonin group was significantly lower than that of the positive control group (P < 0.01). CONCLUSIONS Melatonin demonstrated antiresorptive effects on bone associated with experimentally induced periapical lesions in rats via its anti-inflammatory activity. Further studies are necessary to evaluate its possible effects on the healing of periapical lesions.
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Affiliation(s)
- E Sarıtekin
- Department of Endodontics, Faculty of Dentistry, Süleyman Demirel University, Isparta, Turkey
| | - B Üreyen Kaya
- Department of Endodontics, Faculty of Dentistry, Süleyman Demirel University, Isparta, Turkey
| | - H Aşcı
- Department of Pharmacology, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey
| | - Ö Özmen
- Department of Pathology, Faculty of Veterinary Medicine, Mehmet Akif Ersoy University, Burdur, Turkey
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20
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Howait M, Albassam A, Yamada C, Sasaki H, Bahammam L, Azuma MM, Cintra LTA, Satoskar AR, Yamada S, White R, Kawai T, Movila A. Elevated Expression of Macrophage Migration Inhibitory Factor Promotes Inflammatory Bone Resorption Induced in a Mouse Model of Periradicular Periodontitis. THE JOURNAL OF IMMUNOLOGY 2019; 202:2035-2043. [PMID: 30737274 DOI: 10.4049/jimmunol.1801161] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 01/15/2019] [Indexed: 12/23/2022]
Abstract
Locally produced osteoclastogenic factor RANKL plays a critical role in the development of bone resorption in periradicular periodontitis. However, because RANKL is also required for healthy bone remodeling, it is plausible that a costimulatory molecule that upregulates RANKL production in inflammatory periradicular periodontitis may be involved in the pathogenic bone loss processes. We hypothesized that macrophage migration inhibitory factor (MIF) would play a role in upregulating the RANKL-mediated osteoclastogenesis in the periradicular lesion. In response to pulp exposure, the bone loss and level of MIF mRNA increased in the periradicular periodontitis, which peaked at 14 d, in conjunction with the upregulated expressions of mRNAs for RANKL, proinflammatory cytokines (TNF-α, IL-6, and IL-1β), chemokines (MCP-1 and SDF-1), and MIF's cognate receptors CXCR4 and CD74. Furthermore, expressions of those mRNAs were found significantly higher in wild-type mice compared with that of MIF-/- mice. In contrast, bacterial LPS elicited the production of MIF from ligament fibroblasts in vitro, which, in turn, enhanced their productions of RANKL and TNF-α. rMIF significantly upregulated the number of TRAP+ osteoclasts in vitro. Finally, periapical bone loss induced in wild-type mice were significantly diminished in MIF-/- mice. Altogether, the current study demonstrated that MIF appeared to function as a key costimulatory molecule to upregulate RANKL-mediated osteoclastogenesis, leading to the pathogenically augmented bone resorption in periradicular lesions. These data also suggest that the approach to neutralize MIF activity may lead to the development of a therapeutic regimen for the prevention of pathogenic bone loss in periradicular periodontitis.
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Affiliation(s)
- Mohammed Howait
- School of Dental Medicine, Harvard University, Boston, MA 02115.,Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia.,The Forsyth Institute, Cambridge, MA 02142
| | - Abdullah Albassam
- School of Dental Medicine, Harvard University, Boston, MA 02115.,Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia.,The Forsyth Institute, Cambridge, MA 02142
| | - Chiaki Yamada
- College of Dental Medicine, Nova Southeastern University, Ft. Lauderdale, FL 33324
| | - Hajime Sasaki
- School of Dental Medicine, Harvard University, Boston, MA 02115.,The Forsyth Institute, Cambridge, MA 02142.,School of Dentistry, University of Michigan, Ann Arbor, MI 48109
| | - Laila Bahammam
- Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mariane Maffei Azuma
- The Forsyth Institute, Cambridge, MA 02142.,School of Dentistry, University of Michigan, Ann Arbor, MI 48109
| | | | - Abhay R Satoskar
- Department of Microbiology, The Ohio State University, Columbus, OH 43210; and
| | - Satoru Yamada
- Graduate School of Dentistry, Tohoku University, Tohoku, Sendai 980-8575, Japan
| | - Robert White
- School of Dental Medicine, Harvard University, Boston, MA 02115
| | - Toshihisa Kawai
- College of Dental Medicine, Nova Southeastern University, Ft. Lauderdale, FL 33324
| | - Alexandru Movila
- School of Dental Medicine, Harvard University, Boston, MA 02115; .,The Forsyth Institute, Cambridge, MA 02142.,College of Dental Medicine, Nova Southeastern University, Ft. Lauderdale, FL 33324
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Nikolic N, Jakovljevic A, Carkic J, Beljic-Ivanovic K, Miletic M, Soldatovic I, Andric M, Ivanovic V, Milasin J. Notch Signaling Pathway in Apical Periodontitis: Correlation with Bone Resorption Regulators and Proinflammatory Cytokines. J Endod 2019; 45:123-128. [DOI: 10.1016/j.joen.2018.10.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 09/25/2018] [Accepted: 10/28/2018] [Indexed: 02/06/2023]
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22
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Gomes ESB, Farias LC, Silveira LH, Jesus CÍD, Rocha RGD, Ramos GV, Magalhães HTAT, Brito-Júnior M, Santos SHS, Jham BC, de Paula AMB, Guimarães ALS. Conditioned fear stress increases bone resorption in apical periodontitislesions in Wistar male rats. Arch Oral Biol 2019; 97:35-41. [DOI: 10.1016/j.archoralbio.2018.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/27/2018] [Accepted: 10/03/2018] [Indexed: 02/02/2023]
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23
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Santa-Rosa CC, Thebit MM, Maciel KF, Brito LCND, Vieira LQ, Ribeiro-Sobrinho AP. Evaluation of chemokines and receptors in gnotobiotic root canal infection by F. nucleatum and E. faecalis. Braz Oral Res 2018; 32:e120. [PMID: 30517429 DOI: 10.1590/1807-3107bor-2018.vol32.0120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 10/10/2018] [Indexed: 12/28/2022] Open
Abstract
The present study aims to evaluate the longitudinal effects of induced experimental infections in gnotoxenic animals on the expression of inflammatory chemokines and their receptors in periradicular tissues. The null hypothesis tested was that Enterococcus faecalis and Fusobacterium nucleatum had no effect on CCR5, CCL5, CXCL10, CCL2/MCP-1, CXCR2 and CCR1 expression. Two groups of five animals (n = 5) aged between 8 and 12 weeks were used in this study. The animals were anaesthetized, and coronary access was performed in the first molar on the right and left sides. Microorganisms were inoculated into the left molar, and the right molar was sealed without contamination to function as a control. Animals were sacrificed 7 and 14 days after infection, and periapical tissues were collected. The cytokine mRNA expression levels were assessed using real-time PCR. The chemokine mRNA expression levels demonstrated that the experimental infection was capable of inducing increased chemokine expression on day 7 compared to that on day 14, except for CCR5 and CCL5, which showed no changes. The gnotoxenic animal model proved to be effective and allowed evaluation of the immune response against a known infection. Additionally, this study demonstrates that gene expression of chemokines and their receptors against the experimental infection preferentially prevailed during the initial phase of induction of the periradicular alteration (i.e., on day 7 post-infection).
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Affiliation(s)
- Caroline Christine Santa-Rosa
- Universidade Federal de Minas Gerais - UFMG, Faculty of Dentistry, Department of Restorative Dentistry, Belo Horizonte, MG, Brazil
| | - Marcela Marçal Thebit
- Universidade Federal de Minas Gerais - UFMG, Faculty of Dentistry, Department of Restorative Dentistry, Belo Horizonte, MG, Brazil
| | - Kamilla Faria Maciel
- Universidade Federal de Minas Gerais - UFMG, Faculty of Dentistry, Department of Restorative Dentistry, Belo Horizonte, MG, Brazil
| | | | - Leda Quercia Vieira
- Universidade Federal de Minas Gerais - UFMG, Institute of Biological Sciences, Department of Biochemistry and Immunology, Belo Horizonte, MG, Brazil
| | - Antônio Paulino Ribeiro-Sobrinho
- Universidade Federal de Minas Gerais - UFMG, Faculty of Dentistry, Department of Restorative Dentistry, Belo Horizonte, MG, Brazil
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Barreiros D, Nelson P, Paula-Silva FWG, Oliveira KMHD, Lucisano MP, Rossi AD, Silva LAB, Küchler EC, Silva RAB. MMP2 and MMP9 are Associated with Apical Periodontitis Progression and Might be Modulated by TLR2 and MyD88. Braz Dent J 2018; 29:43-47. [PMID: 29267523 DOI: 10.1590/0103-6440201801731] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 11/21/2017] [Indexed: 12/14/2022] Open
Abstract
The aim of this study was to evaluate the expression of MMP2 and MMP9 during apical periodontitis (AP) progression in TLR2 (TLR2 KO) and in MyD88 (MyD88 KO) knockout mice compared to wild type (WT) mice. AP was induced in mandibular first molars of TLR2 KO (n= 18), MyD88 KO (n= 18), and WT mice (n= 18). After 7, 21, and 42 days, the animals were euthanized and the jaws were dissected and subjected to histotechnical processing. Subsequent sections were stained by immunohistochemistry and evaluated for detection of MMP2 and MMP9. Statistical analysis of the semi-quantitative analysis of immunohistochemistry was performed using chi-square test (α = 0.05). In the initial periods of AP progression, an increased expression of MMP9 in the TLR2 KO and MyD88 KO mice was observed. In the final periods of AP progression, a reduction of MMP2 expression and an increase of MMP9 expression in the TLR2 KO mice were observed. MMP2 and MMP9 production was modulated for TLR2 and MyD88 during apical periodontitis progression.
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Affiliation(s)
- Driely Barreiros
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Paulo Nelson
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, Brazil
| | | | | | - Marília Pacífico Lucisano
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Andiara De Rossi
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Lea Assed Bezerra Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Erika Calvano Küchler
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Raquel Assed Bezerra Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, Brazil
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Wu Y, Sun H, Yang B, Liu X, Wang J. 5-Lipoxygenase Knockout Aggravated Apical Periodontitis in a Murine Model. J Dent Res 2017; 97:442-450. [PMID: 29125911 DOI: 10.1177/0022034517741261] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
5-Lipoxygenase (5-LO) plays a vital role in the host innate immune response, including bacteria-induced inflammation. Apical periodontitis (AP) is due to immune disorders caused by imbalances between bacterial invasion and subsequent host defense response. In this work, we investigated the role of 5-lipoxygenase in AP by using 5- lo knockout mice (5- lo-/- mice). Results showed that 5- lo-/- mice had greater periapical bone loss and more osteoclasts positive for tartrate-resistant acid phosphatase staining than did wild-type mice, as determined by micro-computed tomography and histologic staining. The inflammation- and osteoclastogenesis-related factors IL-1β, TNF-α, RANK, and RANKL were also significantly elevated in 5- lo-/- mice, whereas osteoprotegerin was reduced. Furthermore, peritoneal macrophages from 5- lo-/- mice revealed an obviously impaired ability to phagocytose the AP pathogenic bacteria Fusobacterium nucleatum. In vivo experiments confirmed that 5- lo knockout led to decreased macrophage recruitment and increased F. nucleatum infection around the periapical area due to decreased leukotriene B4 and LXA4 production. All these results showed that 5- lo knockout impaired the host innate immune system to promote the release of bone resorption-related factors. Therefore, 5- lo deficiency aggravated AP in an experimental murine AP model.
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Affiliation(s)
- Y Wu
- 1 The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, People's Republic of China
| | - H Sun
- 1 The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, People's Republic of China
| | - B Yang
- 1 The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, People's Republic of China
| | - X Liu
- 1 The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, People's Republic of China
| | - J Wang
- 1 The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, People's Republic of China
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Reis AL, Oliveira RR, Tavares WLF, Saldanha TDS, Farias LDM, Vieira LQ, Ribeiro AP. Murine Experimental Root Canal Infection: Cytokine Expression in Response to F. nucleatum and E. faecalis. Braz Dent J 2017; 27:578-583. [PMID: 27982237 DOI: 10.1590/0103-6440201600926] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 06/08/2016] [Indexed: 01/12/2023] Open
Abstract
The aim of this study was to evaluate the gene expression of proinflammatory (RANKL, TNF-a and IFN-g) and regulatory (TGF-b and IL-10) cytokines as reaction to experimental infection by mono or bi-association of Fusobacterium nucleatum (ATCC 10953) and Enterococcus faecalis (ATCC 19433). F. nucleatum and E. faecalis, either in mono- or bi-association were inoculated into the root canal system (RCS) of Balb/c mice. Animals were sacrificed at 10 and 20 days after infection and periapical tissues surrounding the root were collected. The mRNA expression of the cytokines RANKL, TNF-a, IFN- g, TGF-b and IL-10 was assessed using real-time PCR. The Kruskal-Wallis test was used for statistical analysis. F. nucleatum mono-infection induced high expression of RANKL and TNF-a, while its modulation was due to IL-10. High expression of IFN-g at day 20 was up-regulated by E. faecalis and RANKL; TNF-a was up-regulated by an independent mechanism via IL-10 and TGF-b. Bi-association (F. nucleatum and E. faecalis) stimulated high expression of RANKL, TNF-a and IFN-g, which seemed to be modulated by TGF-b 20 days later. The gene expression of proinflammatory cytokines was more prominent in the earlier periods of the experimental periapical infection, which concomitantly decreased in the later period. This expression may be regulated by IL-10 and TGF-b in an infection-specific condition.
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Affiliation(s)
- Andressa Lamari Reis
- School of Dentistry, UFMG - Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ricardo Reis Oliveira
- School of Dentistry, UFMG - Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | | | - Luiz de Macêdo Farias
- Institute of Biological Sciences, UFMG - Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Leda Quércia Vieira
- Institute of Biological Sciences, UFMG - Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Antônio Paulino Ribeiro
- School of Dentistry, UFMG - Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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De Rossi A, Fukada SY, De Rossi M, da Silva RAB, Queiroz AM, Nelson-Filho P, da Silva LAB. Cementocytes Express Receptor Activator of the Nuclear Factor Kappa-B Ligand in Response to Endodontic Infection in Mice. J Endod 2016; 42:1251-7. [DOI: 10.1016/j.joen.2016.05.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 04/26/2016] [Accepted: 05/14/2016] [Indexed: 10/21/2022]
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Interleukin 6 and/or Interleukin 17A Modulate the OPG/RANKL System of MC3T3-E1 Murine Osteoblast Cell Line. Int J Pept Res Ther 2016. [DOI: 10.1007/s10989-016-9529-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Estrela C, Decurcio DDA, Silva JA, Batista AC, de Souza Lima NC, de Freitas Silva BS, de Souza JAC, Souza Costa CA. Immune-Inflammatory Cell Profile and Receptor Activator of Nuclear Factor Kappa B Ligand/Osteoprotegerin Expression in Persistent Apical Periodontitis after Root Canal Retreatment Failure. J Endod 2016; 42:439-46. [DOI: 10.1016/j.joen.2015.11.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/11/2015] [Accepted: 11/17/2015] [Indexed: 11/15/2022]
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Cathepsin K Inhibitor Regulates Inflammation and Bone Destruction in Experimentally Induced Rat Periapical Lesions. J Endod 2015; 41:1474-9. [DOI: 10.1016/j.joen.2015.04.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Revised: 04/03/2015] [Accepted: 04/13/2015] [Indexed: 11/18/2022]
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31
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Expression and Distribution of Receptor Activator of Nuclear Factor Kappa B, Receptor Activator of Nuclear Factor Kappa B Ligand, and Osteoprotegerin in Periradicular Cysts. J Endod 2015; 41:1281-7. [DOI: 10.1016/j.joen.2015.03.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 02/26/2015] [Accepted: 03/27/2015] [Indexed: 11/24/2022]
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32
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Kubono Y, Mayahara M, Otsuka H, Kataoka R, Takagi Y, Asari J, Nonaka N, Inoue M, Nakamura M. Analysis of periapical alveolar bone resorption after the removal of interdental wire ligation. PEDIATRIC DENTAL JOURNAL 2015. [DOI: 10.1016/j.pdj.2014.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kang YH, Jin JS, Son SM. Long Term Effect of High Glucose and Phosphate Levels on the OPG/RANK/RANKL/TRAIL System in the Progression of Vascular Calcification in rat Aortic Smooth Muscle Cells. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2015; 19:111-8. [PMID: 25729272 PMCID: PMC4342730 DOI: 10.4196/kjpp.2015.19.2.111] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 12/03/2014] [Accepted: 12/17/2014] [Indexed: 01/29/2023]
Abstract
Osteoprotegerin (OPG), receptor activator of NF-κB ligand (RANKL)/receptor activator of NF-κB (RANK) axis, and TNF-related apoptosis-inducing ligand (TRAIL) participate in vascular calcification process including atherosclerosis, but their contributions under high glucose (HG) and phosphate (HP) condition for a long-term period (more than 2 weeks) have not been fully determined. In this study, we evaluated the effects of HG and HP levels over 2 or 4 weeks on the progression of vascular calcification in rat vascular smooth muscle cells (VSMCs). Calcium deposition in VSMCs was increased in medium containing HG (30 mmol/L D-glucose) with β-glycerophosphate (β-GP, 12 mmol/L) after 2 weeks and increased further after 4 weeks. OPG mRNA and protein expressions were unchanged in HG group with or without β-GP after 2 weeks. However, after 4 weeks, OPG mRNA and protein expressions were significantly lower in HG group with β-GP. No significant expression changes were observed in RANKL, RANK, or TRAIL during the experiment. After 4 weeks of treatment in HG group containing β-GP and rhBMP-7, an inhibitor of vascular calcification, OPG expressions were maintained. Furthermore, mRNA expression of alkaline phosphatase (ALP), a marker of vascular mineralization, was lower in the presence of rhBMP-7. These results suggest that low OPG levels after long term HG and phosphate stimulation might reduce the binding of OPG to RANKL and TRAIL, and these changes could increase osteo-inductive VSMC differentiation, especially vascular mineralization reflected by increased ALP activity during vascular calcification.
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Affiliation(s)
- Yang Ho Kang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Pusan National University School of Medicine, Yangsan 626-770, Korea. ; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 626-770, Korea. ; Diabetes Center and Endocrine Clinic, Pusan National University Yangsan Hospital, Yangsan 626-770, Korea
| | - Jung Sook Jin
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 626-770, Korea
| | - Seok Man Son
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Pusan National University School of Medicine, Yangsan 626-770, Korea. ; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 626-770, Korea. ; Diabetes Center and Endocrine Clinic, Pusan National University Yangsan Hospital, Yangsan 626-770, Korea
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de Oliveira KMH, da Silva RAB, De Rossi A, Fukada SY, Feres M, Nelson-Filho P, da Silva LAB. Absence of interleukin 22 affects the oral microbiota and the progression of induced periapical lesions in murine teeth. Int Endod J 2015; 48:46-59. [PMID: 24611911 DOI: 10.1111/iej.12274] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2013] [Accepted: 02/22/2014] [Indexed: 01/18/2023]
Abstract
AIM To evaluate the absence of IL-22 on the progression of periapical lesions in wild-type (WT) and IL-22 knockout (IL-22 KO) mice. METHODOLOGY The evaluation of the oral microbial profile of mice was performed by Checkerboard DNA-DNA hybridization from saliva samples. Periapical lesions were induced in manbibular first molars by pulpal exposure and evaluated after 7, 21 and 42 days (n = 15). Haematoxylin-eosin-stained sections were analysed under conventional and fluorescence microscopy to evaluate the tissue features and size of periapical lesions and tartrate-resistant acid phosphatase histoenzymology (TRAP), Brown & Brenn staining and immunohistochemistry. The scores of the number of bacterial cells present in the oral cavity were analysed by the Mann-Whitney test, and the results and comparisons for periapical lesion size and number of osteoclasts were subjected to one-way anova and Bonferroni's post-test (α = 0.05). RESULTS Significant differences were observed for bacterial load between the groups of animals for 6 bacterial species (P < 0.05), with five species found in higher levels in the WT group, and one in the IL-22 KO group. WT mice had significantly larger periapical lesions (P < 0.05) between 7 and 42 days and between 21 and 42 days, with an increase in the mean size and number of osteoclasts. IL-22 KO mice had an increase in periapical lesion size and number of osteoclasts between 7 and 21 days (P < 0.05). No differences were found between bacteria localization in the root canal system between the experimental groups. Small variations related to the location of immunostaining were found between the groups. CONCLUSION This study revealed differences in the composition of oral microbiota between mice that may be taken into account in the susceptibility to infections and development of periapical lesions. The absence of IL-22 in mice resulted in smaller periapical lesions with fewer osteoclasts at the final experimental period, suggesting the participation of IL-22 in the host immune and inflammatory response to a periradicular infection.
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Affiliation(s)
- K M H de Oliveira
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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Gomes-Filho JE, Wayama MT, Dornelles RCM, Ervolino E, Yamanari GH, Lodi CS, Sivieri-Araújo G, Dezan-Júnior E, Cintra LTA. Raloxifene modulates regulators of osteoclastogenesis and angiogenesis in an oestrogen deficiency periapical lesion model. Int Endod J 2014; 48:1059-68. [PMID: 25354165 DOI: 10.1111/iej.12403] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 10/24/2014] [Indexed: 01/14/2023]
Abstract
AIM To analyse the local regulatory mechanisms of osteoclastogenesis and angiogenesis during the progression of periapical lesions in female rats with oestrogen deficiency and treatment with raloxifene (RLX). METHODOLOGY Female Wistar rats were distributed into groups: SHAM-veh, subjected to sham surgery and treated with a vehicle; OVX-veh, subjected to ovary removal and treated with a vehicle; and OVX-RLX, subjected to ovary removal and treated with RLX. Vehicle or RLX was administered orally for 90 days. During treatment, the dental pulp of mandibular first molars was exposed to the oral environment for induction of periapical lesions, which were analysed after 7 and 30 days. After the experimental periods, blood samples were collected for measurement of oestradiol, calcium, phosphorus and alkaline phosphatase. The rats were euthanized and the mandibles removed and processed for immunohistochemical detection of receptor activator of nuclear factor kappa-B ligand (RANKL), osteoprotegerin (OPG), hypoxia-inducible factor-1 alpha (HIF-1α) and bone-specific alkaline phosphatase (BALP). Data were compared using Kruskal-Wallis followed by Dunn test (nonparametric values) and anova followed by the Tukey's test (parametric values). RESULTS The plasma concentration of oestradiol showed hypo-oestrogenism in the rats subjected to ovary removal. On day 7, alkaline phosphatase activity, calcium and phosphorus were higher in the OVX-RLX group than in the OVX-veh group (P < 0.001), but immunolabelling for RANKL and HIF-1α was lower in OVX-RLX group (P < 0.001). On day 30, the OVX-veh group had higher immunolabelling for RANKL than the OVX-RLX group (P < 0.05). There were no significant differences in the immunoreactivity of OPG and BALP between any groups at either time-point (P > 0.05). CONCLUSION RLX therapy reversed the increased levels of the local regulators of both osteoclastogenesis and angiogenesis induced by oestrogen deficiency.
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Affiliation(s)
- J E Gomes-Filho
- Department of Endodontics, Araçatuba School of Dentistry, Univ. Estadual Paulista, Araçatuba, Brazil
| | - M T Wayama
- Department of Endodontics, Araçatuba School of Dentistry, Univ. Estadual Paulista, Araçatuba, Brazil
| | - R C M Dornelles
- Department of Endodontics, Araçatuba School of Dentistry, Univ. Estadual Paulista, Araçatuba, Brazil
| | - E Ervolino
- Department of Endodontics, Araçatuba School of Dentistry, Univ. Estadual Paulista, Araçatuba, Brazil
| | - G H Yamanari
- Department of Endodontics, Araçatuba School of Dentistry, Univ. Estadual Paulista, Araçatuba, Brazil
| | - C S Lodi
- Department of Endodontics, Araçatuba School of Dentistry, Univ. Estadual Paulista, Araçatuba, Brazil
| | - G Sivieri-Araújo
- Department of Endodontics, Araçatuba School of Dentistry, Univ. Estadual Paulista, Araçatuba, Brazil
| | - E Dezan-Júnior
- Department of Endodontics, Araçatuba School of Dentistry, Univ. Estadual Paulista, Araçatuba, Brazil
| | - L T A Cintra
- Department of Endodontics, Araçatuba School of Dentistry, Univ. Estadual Paulista, Araçatuba, Brazil
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Liu L, Wang L, Wu Y, Peng B. The expression of MCP-1 and CCR2 in induced rats periapical lesions. Arch Oral Biol 2014; 59:492-9. [DOI: 10.1016/j.archoralbio.2014.02.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 01/26/2014] [Accepted: 02/13/2014] [Indexed: 10/25/2022]
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37
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MMP9 Deficiency Increased the Size of Experimentally Induced Apical Periodontitis. J Endod 2014; 40:658-64. [DOI: 10.1016/j.joen.2014.01.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 10/01/2013] [Accepted: 01/02/2014] [Indexed: 12/12/2022]
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38
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Aghaloo TL, Cheong S, Bezouglaia O, Kostenuik P, Atti E, Dry SM, Pirih FQ, Tetradis S. RANKL inhibitors induce osteonecrosis of the jaw in mice with periapical disease. J Bone Miner Res 2014; 29:843-54. [PMID: 24115073 PMCID: PMC4476544 DOI: 10.1002/jbmr.2097] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 08/24/2013] [Accepted: 09/05/2013] [Indexed: 12/20/2022]
Abstract
Antiresorptive medications are essential in treating diseases of pathologic osteoclastic bone resorption, including bone cancer and osteoporosis. Bisphosphonates (BPs) are the most commonly used antiresorptives in clinical practice. Although inhibition of bone resorption is important in regulating unwanted malignant and metabolic osteolysis, BP treatment is associated with potential side effects, including osteonecrosis of the jaws (ONJ). Recently, non-BP antiresorptive medications targeting osteoclastic function and differentiation, such as denosumab, have entered the clinical arena. Denosumab treatment results in a similar rate of ONJ as BPs. Animal models of ONJ, using high-dose BP treatment in combination with tooth extraction or dental disease, provide valuable tools and insight in exploring ONJ pathophysiology. However, the ability of other antiresorptives to induce ONJ-like lesions in animal models has not been explored. Such studies would be beneficial in providing support for the role of osteoclast inhibition in ONJ pathogenesis versus a direct BP effect on oral tissues. Here, we tested the ability of the receptor activator of NF-κB ligand (RANKL) inhibitors RANK-Fc (composed of the extracellular domain of RANK fused to the fragment crystallizable [Fc] portion of immunoglobulin G [IgG]) and OPG-Fc (composed of the RANKL-binding domains of osteoprotegerin [OPG] linked to the Fc portion of IgG) to induce ONJ in mice in the presence of periapical disease, but in the absence of dental extractions. We demonstrate radiographic evidence of ONJ in RANK-Fc-treated and OPG-Fc-treated mice, including inhibition of bone loss, increased bone density, lamina dura thickening, and periosteal bone deposition. These findings closely resembled the radiographic appearance of an ONJ patient on denosumab treatment. Histologic examination revealed that RANK-Fc treatment and OPG-Fc treatment resulted in absence of osteoclasts, periosteal bone formation, empty osteocytic lacunae, osteonecrosis, and bone exposure. In conclusion, we have successfully induced ONJ in mice with periapical disease, using potent osteoclast inhibitors other than BPs. Our findings, coupled with ONJ animal models using high-dose BPs, suggest that osteoclast inhibition is pivotal to the pathogenesis of ONJ.
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Affiliation(s)
- Tara L Aghaloo
- Division of Diagnostic and Surgical Sciences, School of Dentistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
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Sun Z, Wang L, Peng B. Kinetics of glycogen synthase kinase (GSK)3β and phosphorylated GSK3β (Ser 9) expression in experimentally induced periapical lesions. Int Endod J 2014; 47:1107-16. [PMID: 24494585 DOI: 10.1111/iej.12258] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 01/29/2014] [Indexed: 02/05/2023]
Abstract
AIM To investigate the kinetics of GSK3β and p-GSK3β (Ser 9) expression in experimentally induced rat periapical lesions and to explore their possible functions in the pathogenesis of periapical lesions. METHODOLOGY Periapical lesions were established in Wistar rats by occlusal pulp exposure in mandibular first molar teeth. The animals were killed on days 0, 7, 14, 21 and 28. Micro-computed tomographic, histological and enzyme histochemical analyses were performed to detect the progression of periapical lesions. Immunohistochemistry, double-dye immunofluorescence and Western blot were performed to determine the expression of GSK3β and p-GSK3β (Ser 9) in periapical tissues. RESULTS From day 0 to day 28, the lesion volume and area gradually expanded, and the GSK3β-positive cells gradually ascended. A few p-GSK3β (Ser 9)-positive cells and osteoclasts appeared on day 7 and then climaxed on day 14. The numbers then simultaneously decreased from day 21 to day 28. Western blot analysis revealed that p-GSK3β (Ser 9) and GSK3β proteins were expressed at all time-points. The positive cells and protein expression ratio of p-GSK3β (Ser 9) against GSK3β increased from day 0 to day 14 and then decreased from day 14 to day 28. Finally, double-dye immunofluorescence assay revealed that p-GSK3β (Ser 9)-positive and RANKL-positive cells were co-localized around periapical lesions on days 14 and 28. CONCLUSIONS GSK3β and p-GSK3β (Ser 9) can be observed and may be involved in alveolar bone resorption and inflammatory response in periapical lesions, as well as associated with periapical lesion pathogenesis.
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Affiliation(s)
- Z Sun
- School and Hospital of Stomatology, Wuhan University, Wuhan, China
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Liu S, Li Q, Liu Y. Immunohistochemical localization of NALP3 inflammasome in experimental periapical lesions. Int Endod J 2014; 47:949-57. [PMID: 24386947 DOI: 10.1111/iej.12240] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 01/01/2014] [Indexed: 02/07/2023]
Abstract
AIM To explore the role of NALP3 inflammasome [NALP3, its effector molecule apoptosis associated speck-like protein (ASC), caspase-1, interleukin (IL)-1β and IL-18] in the development of periapical lesions in rats. METHODOLOGY Periapical lesions were developed within 21 days after mandibular first molar pulp exposure in Sprague-Dawley rats. The animals were randomly sacrificed at 0, 1, 3, 7, 10, 14 and 21 days after pulpal exposure. The bilateral mandibles were extracted for histological processing, then they were haematoxylin-eosin (HE) stained to examine inflammation infiltration in the apical region and immunohistochemically examined for the NALP3 inflammasome signalling pathway. Data were analysed by one-way analysis of variance and the Pearson(') s correlation and linear tendency test. RESULTS NALP3 was detected in the cytoplasm of fibroblasts, monocytes, neutrophils, macrophages and vascular endothelial cells in the periapical region. From day 1 to day 21, the number of NALP3-positive cells ascended and was significantly correlated with the intensity of inflammatory infiltration (r = 0.776, P < 0.01). ASC, caspase-1, IL-1β and IL-18 were all expressed in the inflammatory periapical tissues. The positive cell counts of IL-1β and IL-18 were significantly correlated with that of NALP3, and r = 0.718, P < 0.01; r = 0.688, P < 0.01, respectively. CONCLUSIONS NALP3 inflammasome is expressed in the inflammatory periapical tissues. This cytokine-signalling pathway may therefore be crucial in the regulatory control of inflammatory responses in periapical tissues and the development of periapical lesions.
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Affiliation(s)
- S Liu
- Department of Conservative Dentistry and Endodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
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Márton IJ, Kiss C. Overlapping Protective and Destructive Regulatory Pathways in Apical Periodontitis. J Endod 2014; 40:155-63. [DOI: 10.1016/j.joen.2013.10.036] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 09/26/2013] [Accepted: 10/24/2013] [Indexed: 02/06/2023]
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Zhao L, Chen J, Cheng L, Wang X, Du J, Wang F, Peng Z. Effects of Enterococcus faecalis lipoteichoic acid on receptor activator of nuclear factor-κB ligand and osteoprotegerin expression in periodontal ligament fibroblasts. Int Endod J 2013; 47:163-72. [PMID: 23710898 DOI: 10.1111/iej.12127] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 04/17/2013] [Indexed: 01/01/2023]
Abstract
AIM To investigate the influence of Enterococcus faecalis lipoteichoic acid (LTA) on the key bone resorption-regulating proteins, receptor activator of nuclear factor-κB ligand (RANKL) and osteoprotegerin (OPG) in human periodontal ligament fibroblasts (PDL cells). METHODOLOGY Periodontal ligament cells were subjected to various concentrations of LTA. Cell viability was then determined by methyl thiazolyl tetrazolium (MTT) assay, whilst the expression levels of RANKL and OPG were investigated by enzyme-linked immunosorbent assay (ELISA) and Western blotting. The effect of the inhibitors [IL-1 receptor-associated kinase (IRAK)-1/4, p38 mitogen-activated protein kinase (MAPK) (SB203580)] on LTA-stimulated RANKL/OPG activation was examined. Cell viability and RANKL/OPG ratio in PDL cells were also analysed by MTT assay and Western blotting. Data were analysed using one-way anova or t-test at a significance level of P = 0.05. RESULT Cell viability was reduced significantly in the LTA group in a dose-dependent fashion (P < 0.05). In addition, LTA was found to upregulate the protein expression of RANKL, OPG and their relative ratio in PDL cells (P < 0.05). The optimal concentration of LTA used in PDL cells was determined to be 10 μg mL(-1) . Following IRAK1/4 and p38MAPK inhibition, LTA-stimulated increases of RANKL/OPG ratio were significantly reduced (P < 0.05). CONCLUSION Enterococcus faecalis LTA could upregulate the expression of RANKL and OPG at different rates, suggesting a potential role for LTA in the bone resorption process of refractory apical periodontitis through the regulation of RANKL and OPG. In addition, IRAK1/4 and p38MAPK signalling involving RANKL/OPG may contribute to inflammatory responses from PDL cells.
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Affiliation(s)
- L Zhao
- Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
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Virtej A, Løes SS, Berggreen E, Bletsa A. Localization and signaling patterns of vascular endothelial growth factors and receptors in human periapical lesions. J Endod 2013; 39:605-11. [PMID: 23611377 DOI: 10.1016/j.joen.2012.12.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Revised: 11/28/2012] [Accepted: 12/10/2012] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Vascular endothelial growth factors (VEGFs) and their receptors (VEGFRs) are key players in vasculogenesis and are also involved in pathologic conditions with bone destruction. Vasculogenesis is critical for disease progression, and bone resorption is a hallmark of apical periodontitis. However, the localization of VEGFs and VEGFRs and their gene signaling pathways in human apical periodontitis have not been thoroughly investigated. The aim of this study was to localize VEGFs and VEGFRs and analyze their gene expression as well as signaling pathways in human periapical lesions. METHODS Tissue was collected after endodontic surgery from patients diagnosed with chronic apical periodontitis. Periodontal ligament samples from extracted healthy wisdom teeth was also collected and used as control tissue. In lesion cryosections, VEGFs/VEGFRs were identified by immunohistochemistry/double immunofluorescence by using specific antibodies. A human VEGF signaling polymerase chain reaction array system was used for gene expression analysis comparing lesions with periodontal ligament samples. RESULTS The histologic evaluation revealed heterogeneous morphology of the periapical lesions with various degrees of inflammatory infiltrates. In the lesions, all investigated factors and receptors were identified in blood vessels and various immune cells. No lymphatic vessels were detected. Gene expression analysis revealed up-regulation of VEGF-A and VEGFR-3, although not significant. Phosphatidylinositol-3-kinases, protein kinase C, mitogen-activated protein kinases, and phospholipases, all known to be involved in VEGF-mediated angiogenic activity, were significantly up-regulated. CONCLUSIONS The cellular and vascular expressions of VEGFs and VEGFRs in chronic apical periodontitis, along with significant alterations of genes mediating VEGF-induced angiogenic responses, suggest ongoing vascular remodeling in established chronic periapical lesions.
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Affiliation(s)
- Anca Virtej
- Institute of Biomedicine, Faculty of Medicine-Dentistry, University of Bergen, Bergen, Norway
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Wei S, Kawashima N, Suzuki N, Xu J, Takahashi S, Zhou M, Koizumi Y, Suda H. Kinetics of Th17-related cytokine expression in experimentally induced rat periapical lesions. AUST ENDOD J 2012; 39:164-70. [DOI: 10.1111/j.1747-4477.2012.00371.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Shusheng Wei
- Department of Endodontics; School of Stomatology; Capital Medical University; Beijing China
| | - Nobuyuki Kawashima
- Pulp Biology and Endodontics; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
| | - Noriyuki Suzuki
- Pulp Biology and Endodontics; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
| | - Jing Xu
- Pulp Biology and Endodontics; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
- Global Center of Excellence (GCOE) Program, International Research Center for Molecular Science in Tooth and Bone Diseases; Tokyo Medical and Dental University; Tokyo Japan
| | - Satomi Takahashi
- Pulp Biology and Endodontics; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
| | - Mengyu Zhou
- Pulp Biology and Endodontics; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
- Global Center of Excellence (GCOE) Program, International Research Center for Molecular Science in Tooth and Bone Diseases; Tokyo Medical and Dental University; Tokyo Japan
| | - Yu Koizumi
- Pulp Biology and Endodontics; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
| | - Hideaki Suda
- Pulp Biology and Endodontics; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
- Global Center of Excellence (GCOE) Program, International Research Center for Molecular Science in Tooth and Bone Diseases; Tokyo Medical and Dental University; Tokyo Japan
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Belibasakis GN, Rechenberg DK, Zehnder M. The receptor activator of
NF
‐κ
B
ligand‐osteoprotegerin system in pulpal and periapical disease. Int Endod J 2012; 46:99-111. [DOI: 10.1111/j.1365-2591.2012.02105.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Accepted: 07/03/2012] [Indexed: 01/15/2023]
Affiliation(s)
- G. N. Belibasakis
- Institute of Oral Biology University of Zürich Center of Dental Medicine ZürichSwitzerland
| | - D. K. Rechenberg
- Department of Preventive Dentistry, Periodontology, and Cariology University of Zürich Center of Dental Medicine Zürich Switzerland
| | - M. Zehnder
- Department of Preventive Dentistry, Periodontology, and Cariology University of Zürich Center of Dental Medicine Zürich Switzerland
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da Silva RAB, Ferreira PDF, De Rossi A, Nelson-Filho P, Silva LAB. Toll-like receptor 2 knockout mice showed increased periapical lesion size and osteoclast number. J Endod 2012; 38:803-13. [PMID: 22595116 DOI: 10.1016/j.joen.2012.03.017] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Revised: 03/13/2012] [Accepted: 03/13/2012] [Indexed: 01/27/2023]
Abstract
INTRODUCTION The aim of this study was to characterize the formation and progression of experimentally induced periapical lesions in TLR2 knockout (TLR2 KO) mice. METHODS Periapical lesions were induced in molars of 28 wild type (WT) and 27 TLR2 KO mice. After 7, 21, and 42 days, the animals were euthanized, and the mandibles were subjected to histotechnical processing. Hematoxylin-eosin-stained sections were examined under conventional light microscopy for the description of pulpal, apical, and periapical features and under fluorescence microscopy for the determination of the periapical lesion size. The subsequent sections were evaluated by tartrate resistant acid phosphatase histoenzymology (osteoclasts), Brown and Brenn staining (bacteria), and immunohistochemistry (RANK, RANKL, and OPG). Data were analyzed by the Mann-Whitney U and Kruskal-Wallis tests (α = 0.05). RESULTS The WT group showed significant differences (P < .05) in the periapical lesion size and the osteoclast number between 7 and 42 days and between 21 and 42 days. In the TLR2 KO group, significant differences (P < .05) in the periapical lesion size and the osteoclast number were found between 7 days and the other periods. There was a significant difference (P < .05) between the 2 types of animal regarding the periapical lesion size, which was larger in the TLR2 KO animals. No significant differences (P > .05) were found between WT and TLR2 KO mice related to the pulpal, apical, and periapical features; bacteria localization; and immunohistochemical results (except for RANK expression). CONCLUSIONS TLR2 KO animals developed larger periapical lesions with a greater number of osteoclasts, indicating the important role of this receptor in the host's immune and inflammatory response to root canal and periradicular infection.
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Affiliation(s)
- Raquel Assed Bezerra da Silva
- Department of Pediatric Clinics, Preventive and Community Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
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Vascular endothelial growth factors and receptors are up-regulated during development of apical periodontitis. J Endod 2012; 38:628-35. [PMID: 22515891 DOI: 10.1016/j.joen.2012.01.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Revised: 01/05/2012] [Accepted: 01/08/2012] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Apical periodontitis is a common inflammatory disease caused by persistent root canal infection and is characterized by bone resorption. Vascular endothelial growth factors (VEGFs) and their receptors (VEGFRs) have been described in many pathologic and inflammatory conditions, but their involvement in the development of apical periodontitis has not been thoroughly investigated. The aim of this study was to quantify gene expression and localize VEGF-A, VEGF-C, and VEGF-D and VEGFR-2 and VEGFR-3 in a rat model of apical periodontitis. METHODS Molar pulps were unilaterally exposed to the oral cavity for 10 or 21 days. Jaw sections were used for localization of VEGFs and VEGFRs with immunohistochemistry and identification of cells with double immunofluorescence. Gene expression analysis for VEGF-A, VEGF-C, and VEGFR-3 of periapical tissues was performed with quantitative real-time polymerase chain reaction. RESULTS All investigated factors and receptors were expressed immunohistochemically in blood vessels at the periodontal ligament of control teeth and were up-regulated during lesion development. In apical lesions, macrophages and neutrophils expressed all studied factors and receptors, with macrophages being an important source of VEGF-C and VEGF-D. Osteoclasts expressed VEGFR-2 and VEGFR-3, and the latter was also identified in fibroblast-like cells in the lesions. VEGF-A and VEGFR-3 gene expression was up-regulated at days 10 and 21 (P < .05). CONCLUSIONS The current findings indicate that the VEGF family and receptors are involved in vascular remodeling and immune functions during disease development. The presence of VEGFR-2 and VEGFR-3 on osteoclasts indicates that bone resorbing activity is influenced by VEGFs.
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Silva MJB, Kajiya M, AlShwaimi E, Sasaki H, Hong J, Ok P, Rezende TMB, Pagonis TC, White RR, Paster BJ, Stashenko P, Kawai T. Bacteria-reactive immune response may induce RANKL-expressing T cells in the mouse periapical bone loss lesion. J Endod 2012; 38:346-50. [PMID: 22341072 DOI: 10.1016/j.joen.2011.12.029] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 12/21/2011] [Accepted: 12/22/2011] [Indexed: 10/14/2022]
Abstract
INTRODUCTION The present study investigated whether bacteria infecting the root canal can activate any infiltrating T cells to produce receptor activator of nuclear factor kappa B (NF-κB) ligand (RANKL). METHODS Using a mouse model of periapical lesion induced by artificial dental pulp exposure, the presence of RANKL-positive T cells and osteoclasts in the periapical lesion was examined by an immunohistochemical approach. The bacteria colonizing the exposed root canal were identified by 16S ribosomal RNA (rRNA) sequence analysis. The isolated endodontic bacteria were further immunized to normal mice, and soluble activator of NF-κB ligand (sRANKL) production by the T cells isolated from the immunized mice was evaluated by ex vivo culture system. RESULTS RANKL-positive T cells along with TRAP+ osteoclasts were identified in periapical bone resorption lesions. The gram-negative bacterium Pasteurella pnumotropica, which was most frequently detected from the root canal of exposed pulp, showed remarkably elevated serum immunoglobulin G (IgG)-antibody response in pulp-exposed mice compared with control nontreated mice. Immunization of mice with P. pneumotropica induced not only serum IgG-antibody but also primed bacteria-reactive T cells that produced sRANKL in response to ex vivo exposure to P. pneumotropica. CONCLUSIONS T cells infiltrating the periapical region express RANKL, and the endodontic bacteria colonizing the root canal appear to induce RANKL expression from bacteria-reactive T cells, suggesting the possible pathogenic engagement of the immune response to endodontic bacteria in the context of developing bone resorptive periapical lesions.
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Affiliation(s)
- Marcelo J B Silva
- Department of Immunology, The Forsyth Institute, Cambridge, Massachusetts, USA
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Maciel KF, Neves de Brito LC, Tavares WLF, Moreira G, Nicoli JR, Vieira LQ, Ribeiro Sobrinho AP. Cytokine expression in response to root canal infection in gnotobiotic mice. Int Endod J 2012; 45:354-62. [DOI: 10.1111/j.1365-2591.2011.01983.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Graunaite I, Lodiene G, Maciulskiene V. Pathogenesis of apical periodontitis: a literature review. J Oral Maxillofac Res 2012; 2:e1. [PMID: 24421998 PMCID: PMC3886078 DOI: 10.5037/jomr.2011.2401] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Accepted: 09/03/2011] [Indexed: 05/29/2023]
Abstract
OBJECTIVES This review article discusses the host response in apical periodontitis with the main focus on cytokines, produced under this pathological condition and contributing to the degradation of periradicular tissues. The pace of research in this field has greatly accelerated in the last decade. Here we provide an analysis of studies published in this area during this period. MATERIAL AND METHODS Literature was selected through a search of PubMed electronic database. The keywords used for search were pathogenesis of apical periodontitis cytokines, periapical granuloma cytokines, inflammatory infiltrate apical periodontitis. The search was restricted to English language articles, published from 1999 to December 2010. Additionally, a manual search in the cytokine production, cytokine functions and periapical tissue destruction in the journals and books was performed. RESULTS In total, 97 literature sources were obtained and reviewed. The topics covered in this article include cellular composition of an inflammatory infiltrate in the periapical lesions, mechanisms of the formation of the innate and specific immune response. Studies which investigated cytokine secretion and functions were identified and cellular and molecular interactions in the course of apical periodontitis described. CONCLUSIONS The abundance and interactions of various inflammatory and anti-inflammatory molecules can influence and alter the state and progression of the disease. Therefore, periapical inflammatory response offers a model, suited for the study of many facets of pathogenesis, biocompatibility of different materials to periapical tissues and development of novel treatment methods, based on the regulation of cytokines expression.
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Affiliation(s)
- Indre Graunaite
- Department of Dental and Oral Pathology, Faculty of Odontology, Lithuanian University of Health SciencesLithuania.
| | - Greta Lodiene
- Department of Dental and Oral Pathology, Faculty of Odontology, Lithuanian University of Health SciencesLithuania.
| | - Vita Maciulskiene
- Department of Dental and Oral Pathology, Faculty of Odontology, Lithuanian University of Health SciencesLithuania.
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