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Marcantonio CC, Perles GH, Lopes MES, Soares LFF, da Costa PI, Cerri PS, Cirelli JA. Influence of anti-sclerostin monoclonal antibody in the repair of post-extraction sockets of ovariectomized rats. Arch Oral Biol 2024; 162:105962. [PMID: 38569446 DOI: 10.1016/j.archoralbio.2024.105962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/05/2024] [Accepted: 03/21/2024] [Indexed: 04/05/2024]
Abstract
OBJECTIVE This study assessed the impact of an anti-sclerostin monoclonal antibody (Scl-Ab)-based osteoporosis drug on the post-extraction alveolar repair of ovariectomized rats. DESIGN Fifteen female rats were randomly distributed into three groups: CTR (healthy animals), OST (osteoporosis induced by ovariectomy), and OST+Scl-Ab (osteoporosis induction followed by Scl-Ab treatment). Ovariectomy or sham surgery was performed 30 days before baseline, and Scl-Ab or a vehicle was administered accordingly in the groups. After seven days, all rats underwent the first lower molar extraction and were euthanized 15 days later. Computed microtomography, histological analysis, and collagen content measurement were performed on post-extraction sockets and intact mandibular and maxillary bone areas. RESULTS Microtomographic analyses of the sockets and mandibles did not reveal significant differences between groups on bone morphometric parameters (p > 0.05), while maxillary bone analyses resulted in better maintenance of bone architecture in OST+Scl-Ab, compared to OST (p < 0.05). Descriptive histological analysis and polarization microscopy indicated better post-extraction socket repair characteristics and collagen content in OST+Scl-Ab compared to OST (p < 0.05). CONCLUSIONS Scl-Ab-based medication did not accelerate alveolar bone formation but exhibited better post-extraction repair characteristics, and collagen content compared to ovariectomized animals only.
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Affiliation(s)
- Camila Chierici Marcantonio
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara, SP, Brazil
| | - Gabriel Henrique Perles
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara, SP, Brazil
| | - Maria Eduarda Scordamaia Lopes
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara, SP, Brazil
| | - Lélio Fernando Ferreira Soares
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara, SP, Brazil
| | - Paulo Inácio da Costa
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, Brazil
| | - Paulo Sergio Cerri
- Department of Morphology, Laboratory of Histology and Embryology, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara, SP, Brazil
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara, SP, Brazil.
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Matos FG, Stremel ACA, Lipinski LC, Cirelli JA, Dos Santos FA. Dental implants in large animal models with experimental systemic diseases: A systematic review. Lab Anim 2023; 57:489-503. [PMID: 37021606 DOI: 10.1177/00236772221124972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
This systematic review aims to identify and discuss the most used methodologies in pre-clinical studies for the evaluation of the implementation of dental implants in systemically compromised pigs and sheep. This study provides support and guidance for future research, as well as for the prevention of unnecessary animal wastage and sacrifice. Preferred Reporting for Systematic Reviews and Meta-Analyses (PRISMA) was used as a guideline; electronic searches were performed in PubMed, Scopus, Scielo, Web of Science, Embase, Science Direct, Brazilian Bibliography of Dentistry, Latin American and Caribbean Literature in Health Sciences, Directory of Open Access Journals, Database of Abstracts of Reviews of Effects, and gray literature until January 2022 (PROSPERO/CRD42021270119). Sixty-eight articles were chosen from the 2439 results. Most studies were conducted in pigs, mainly the Göttinger and Domesticus breeds. Healthy animals with implants installed in the jaws were predominant among the pig studies. Of the studies evaluating the effect of systemic diseases on osseointegration, 42% were performed in osteoporotic sheep, 32% in diabetic sheep, and 26% in diabetic pigs. Osteoporosis was primarily induced by bilateral ovariectomy and mainly assessed by X-ray densitometry. Diabetes was induced predominantly by intravenous streptozotocin and was confirmed by blood glucose analysis. Histological and histomorphometric analyses were the most frequently employed in the evaluation of osseointegration. The animal models presented unique methodologies for each species in the studies that evaluated dental implants in the context of systemic diseases. Understanding the most commonly used techniques will help methodological choices and the performance of future studies in implantology.
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Affiliation(s)
| | | | | | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, State University of São Paulo (Unesp), Brazil
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Fernandes CJDC, Cassiano AFB, Henrique-Silva F, Cirelli JA, de Souza EP, Coaguila-Llerena H, Zambuzzi WF, Faria G. Recombinant sugarcane cystatin CaneCPI-5 promotes osteogenic differentiation. Tissue Cell 2023; 83:102157. [PMID: 37451011 DOI: 10.1016/j.tice.2023.102157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023]
Abstract
Cysteine proteases orchestrate bone remodeling, and are inhibited by cystatins. In reinforcing our hypothesis that exogenous and naturally obtained inhibitors of cysteine proteases (cystatins) act on bone remodeling, we decided to challenge osteoblasts with sugarcane-derived cystatin (CaneCPI-5) for up to 7 days. To this end, we investigated molecular issues related to the decisive, preliminary stages of osteoblast biology, such as adhesion, migration, proliferation, and differentiation. Our data showed that CaneCPI-5 negatively modulates both cofilin phosphorylation at Ser03, and the increase in cytoskeleton remodeling during the adhesion mechanism, possibly as a prerequisite to controlling cell proliferation and migration. This is mainly because CaneCPI-5 also caused the overexpression of the CDK2 gene, and greater migration of osteoblasts. Extracellular matrix remodeling was also evaluated in this study by investigating matrix metalloproteinase (MMP) activities. Our data showed that CaneCPI-5 overstimulates both MMP-2 and MMP-9 activities, and suggested that this cellular event could be related to osteoblast differentiation. Additionally, differentiation mechanisms were better evaluated by investigating Osterix and alkaline phosphatase (ALP) genes, and bone morphogenetic protein (BMP) signaling members. Altogether, our data showed that CaneCPI-5 can trigger biological mechanisms related to osteoblast differentiation, and broaden the perspectives for better exploring biotechnological approaches for bone disorders.
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Affiliation(s)
- Célio Junior da Costa Fernandes
- Bioassays and Cell Dynamics Lab, Department of Chemical and Biological Sciences, Institute of Biosciences, Sao Paulo State University - UNESP, Botucatu, São Paulo, Brazil; Exercise Cell Biology Lab, School of Applied Sciences, University of Campinas, Limeira, São Paulo, Brazil; Department of Biophysics and Pharmacology, Institute of Biosciences, Sao Paulo State University - UNESP, Botucatu, São Paulo, Brazil
| | - Ana Flávia Balestrero Cassiano
- Department of Restorative Dentistry, School of Dentistry at Araraquara, Sao Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Flavio Henrique-Silva
- Department of Genetics and Evolution, Federal University of Sao Carlos, São Carlos, São Paulo, Brazil
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University -UNESP, Araraquara, São Paulo, Brazil
| | - Eduardo Pereira de Souza
- Department of Genetics and Evolution, Federal University of Sao Carlos, São Carlos, São Paulo, Brazil
| | - Hernán Coaguila-Llerena
- Department of Restorative Dentistry, School of Dentistry at Araraquara, Sao Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Willian Fernando Zambuzzi
- Bioassays and Cell Dynamics Lab, Department of Chemical and Biological Sciences, Institute of Biosciences, Sao Paulo State University - UNESP, Botucatu, São Paulo, Brazil.
| | - Gisele Faria
- Department of Restorative Dentistry, School of Dentistry at Araraquara, Sao Paulo State University - UNESP, Araraquara, São Paulo, Brazil.
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Guastaldi FPS, Matheus HR, Faloni APDS, de Almeida-Filho E, Cominotte MA, Moretti LAC, Verzola MHA, Marcantonio E, de Almeida JM, Guastaldi AC, Cirelli JA. A new multiphase calcium phosphate graft material improves bone healing-An in vitro and in vivo analysis. J Biomed Mater Res B Appl Biomater 2022; 110:2686-2704. [PMID: 35779277 DOI: 10.1002/jbm.b.35121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 06/14/2022] [Accepted: 06/17/2022] [Indexed: 12/15/2022]
Abstract
This study aims to evaluate the potential of a novel biomaterial synthesized from amorphous calcium phosphate (ACP), octacalcium phosphate (OCP), and hydroxyapatite (HA) to repair critical-sized defects (CSD) in rabbit calvaria. In vitro analyses of cell viability, cell proliferation, formation of mineral nodules, and cell differentiation using qPCR were performed for comparing experimental calcium phosphate (ECP), deproteinized bovine bone (DBB), and beta-tricalcium phosphate (β-TCP). Bilateral CSDs were created in 45 rabbit calvaria. Six groups were evaluated: ECP, ECP + fibrin sealant (ECP + S), coagulum, autogenous bone, DBB, and β-TCP. Euthanasia was performed at 2, 4, and 8 weeks, followed by micro-computed tomography and histological and immunohistochemical analyses. Results from in vitro analyses revealed similar biocompatibility for all tested materials and a tendency for higher gene expression of some bone markers in the ECP group than in β-TCP and DBB groups at 7 days. In contrast to that in DBB and β-TCP groups, ECP displayed growing bone volume over total volume percentage (BV/TV%) with time in vivo. Histological analysis revealed a greater number of giant cells and reduced size of grafted particles in ECP during all periods of analysis. RUNX-2 expression was statistically lower in ECP than DBB at 2 and 4 weeks. Despite no statistical significance, ECP presented the highest absolute values for ALP-expression at 2, 4, and 8 weeks compared with other groups. Together, our findings indicate that a combination of the ACP, OCP, and HA phases into ECP is beneficial and promising for bone regeneration.
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Affiliation(s)
- Fernando Pozzi Semeghini Guastaldi
- Department of Diagnosis and Surgery, São Paulo State University (Unesp), School of Dentistry, São Paulo, Brazil.,Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Henrique Rinaldi Matheus
- Department of Diagnosis and Surgery, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Ana Paula de Souza Faloni
- Department of Health Sciences, University Center of Araraquara (UNIARA), Araraquara, São Paulo, Brazil
| | - Edson de Almeida-Filho
- Department of Physical Chemistry, São Paulo State University (Unesp), Institute of Chemistry, Araraquara, São Paulo, Brazil
| | - Mariana Aline Cominotte
- Department of Diagnosis and Surgery, São Paulo State University (Unesp), School of Dentistry, São Paulo, Brazil
| | - Livia Alves Correa Moretti
- Department of Diagnosis and Surgery, São Paulo State University (Unesp), School of Dentistry, São Paulo, Brazil
| | | | - Elcio Marcantonio
- Department of Diagnosis and Surgery, São Paulo State University (Unesp), School of Dentistry, São Paulo, Brazil
| | - Juliano Milanezi de Almeida
- Department of Diagnosis and Surgery, São Paulo State University (Unesp), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Antonio Carlos Guastaldi
- Department of Physical Chemistry, São Paulo State University (Unesp), Institute of Chemistry, Araraquara, São Paulo, Brazil
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, São Paulo State University (Unesp), School of Dentistry, São Paulo, Brazil
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de Paiva Gonçalves V, Onofre MA, Bufalino A, Navarro CM, Cirelli JA, Ortega RM. Periodontal treatment of patients with hereditary hemorrhagic telangiectasia. Gen Dent 2022; 70:67-71. [PMID: 35749250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Hereditary hemorrhagic telangiectasia (HHT) is a rare condition in which fragile vascular walls lead to increased risks of bleeding, cerebral abscesses, arteriovenous malformations, anemia, and thrombosis. To date, no protocol has been established for optimizing the clinical outcomes of periodontal treatment in patients with this condition. The aim of this case report is to describe a safe clinical approach to periodontal treatment in a patient with HHT. A 39-year-old woman had a history of multiple macules on the oral mucosa, and a diagnosis of HHT was made based on the Curaçao diagnostic criteria (epistaxis, telangiectases, visceral lesions, and family history). Evaluation of the patient's periodontal clinical parameters and radiographs led to a diagnosis of generalized periodontitis, stage IV, grade C. The patient underwent nonsurgical periodontal therapy consisting of supragingival and subgingival scaling and root planing under a careful and specific protocol that included antibiotic prophylaxis before each session. Two months after therapy, the periodontal reevaluation showed improvement in the clinical parameters at most sites. Sites with remaining periodontal pockets were re-treated according to the same protocol, including the antibiotic prophylaxis. The patient was enrolled in a periodontal maintenance program, and her HHT was routinely monitored by her physician. Periodontal treatment may promote secondary complications in patients with HHT if appropriate systemic care is not provided, and the periodontal treatment plan should be designed individually for each patient. Establishing the correct HHT diagnosis and coordinating care with the patient's physician are essential to safe, effective treatment.
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Matos FG, Santana LCL, Cominotte MA, da Silva FS, Vaz LG, de Oliveira DP, Cirelli JA. Strontium-loaded titanium-15molybdenum surface improves physicochemical and biological properties in vitro. Biomed Phys Eng Express 2022; 8. [PMID: 35594845 DOI: 10.1088/2057-1976/ac71cf] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 05/20/2022] [Indexed: 11/11/2022]
Abstract
The titanium alloy composition and microdesign affect the dynamic interplay between the bone cells and titanium surface in the osseointegration process. The current study aimed to evaluate the surface physicochemical properties, electrochemical stability, and the metabolic response of the MC3T3-E1 cells (pre-osteoblast cell line) cultured onto titanium-15molybdenum (Ti-15Mo) discs treated with phosphoric acid (H3PO4) and sodium hydroxide (NaOH) and/or strontium-loading by the hydrothermal method. The x-ray dispersive energy spectroscopy (EDS) and x-ray diffraction (XRD) analysis showed no trace of impurities and the possible formation of hydrated strontium oxide (H2O2Sr), respectively. The confocal laser microscopy (CLSM) analysis indicated that titanium samples treated with strontium (Sr) showed greater surface roughness. The acid/alkali treatment prior to the hydrothermal Sr deposition improved the surface free energy and resistance to corrosion of the Ti-15Mo alloy. The acid/alkali treatment also provided greater retention of the Sr particles on the Ti-15Mo surfaces accordingly with inductively coupled plasma optical emission spectrometry (ICP-OES) analysis. The AlamarBlue and fluorescence analysis indicated noncytotoxic effects against the MC3T3-E1 cells, which allowed cells' adhesion and proliferation, with greater cells' spreading in the Sr-loaded Ti-15Mo samples. These findings suggest that Sr deposition by the hydrothermal method has the potential to enhance the physicochemical properties of the Ti-15Mo previously etched with H3PO4and NaOH, and also improve the initial events related to cell-mediated bone deposition.
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Affiliation(s)
- Flávia Gomes Matos
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University-UNESP, Araraquara, SP, Brazil
| | - Luís Carlos Leal Santana
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University-UNESP, Araraquara, SP, Brazil
| | - Mariana Aline Cominotte
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University-UNESP, Araraquara, SP, Brazil
| | | | - Luís Geraldo Vaz
- Department of Dental Materials and Prosthodontics, School of Dentistry at Araraquara, Sao Paulo State University-UNESP, Araraquara, SP, Brazil
| | - Diego Pedreira de Oliveira
- Department of Materials Engineering-DEMa, Federal University of São Carlos-UFSCar, São Carlos, SP, Brazil
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University-UNESP, Araraquara, SP, Brazil
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7
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Marcantonio CC, Lopes MES, Mofatto LS, Salmon CR, Deschner J, Nociti-Junior FH, Cirelli JA, Nogueira AVB. Obesity affects the proteome profile of periodontal ligament submitted to mechanical forces induced by orthodontic tooth movement in rats. J Proteomics 2022; 263:104616. [PMID: 35595054 DOI: 10.1016/j.jprot.2022.104616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/05/2022] [Accepted: 05/09/2022] [Indexed: 12/20/2022]
Abstract
The prevalence of obesity has increased significantly worldwide. Therefore, this study aimed to evaluate the influence of obesity on the proteomic profile of periodontal ligament (PDL) tissues of rat first maxillary molars (1 M) submitted to orthodontic tooth movement (OTM). Ten Holtzman rats were distributed into two groups (n = 5): the M group (OTM), and the OM group (obesity induction plus OTM). Obesity was induced by a high-fat diet for the entire experimental periods After that period, the animals were euthanized and the hemimaxillae removed and processed for laser capture microdissection of the PDL tissues of the 1 M. Peptide extracts were obtained and analyzed by LC-MS/MS. Data are available via ProteomeXchange with identifier PXD033647. Out of the 109 proteins with differential abundance, 49 were identified in the OM group, including Vinculin, Cathepsin D, and Osteopontin, which were selected for in situ localization by immunohistochemistry analysis (IHC). Overall, Gene Ontology (GO) analysis indicated that enriched proteins were related to the GO component cellular category. IHC validated the trends for selected proteins. Our study highlights the differences in the PDL proteome profiling of healthy and obese subjects undergoing OTM. These findings may provide valuable information needed to better understand the mechanisms involved in tissue remodeling in obese patients submitted to orthodontic treatment. SIGNIFICANCE: The prevalence of obesity is increasing worldwide. Emerging findings in the field of dentistry suggest that obesity influences the tissues around the teeth, especially those in the periodontal ligament. Therefore, evaluation of the effect of obesity on periodontal tissues remodeling during orthodontic tooth movement is a relevant research topic. To our knowledge, this is the first study to evaluate proteomic changes in periodontal ligament tissue in response to the association between orthodontic tooth movement and obesity. Our study identified a novel protein profile associated with obesity by using laser microdissection and proteomic analysis, providing new information to increase understanding of the mechanisms involved in obese patients undergoing orthodontic treatment which can lead to a more personalized orthodontic treatment approach.
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Affiliation(s)
- Camila Chierici Marcantonio
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University - UNESP, Araraquara, São Paulo, Brazil.
| | - Maria Eduarda Scordamaia Lopes
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University - UNESP, Araraquara, São Paulo, Brazil.
| | - Luciana Souto Mofatto
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas - UNICAMP, Campinas, São Paulo, Brazil
| | - Cristiane Ribeiro Salmon
- Department of Prosthodontics and Periodontics, Division of Periodontics, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, São Paulo, Brazil
| | - James Deschner
- Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany.
| | - Francisco Humberto Nociti-Junior
- Department of Prosthodontics and Periodontics, Division of Periodontics, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, São Paulo, Brazil; São Leopoldo Mandic Research Center, Campinas, São Paulo, Brazil.
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University - UNESP, Araraquara, São Paulo, Brazil.
| | - Andressa Vilas Boas Nogueira
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University - UNESP, Araraquara, São Paulo, Brazil; Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany.
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Lopes MES, Marcantonio CC, de Molon RS, Cerri PS, Salmon CR, Mofatto LS, Nociti Junior FH, Deschner J, Cirelli JA, Nogueira AVB. Obesity influences the proteome of periodontal ligament tissues following periodontitis induction in rats. J Periodontal Res 2022; 57:545-557. [PMID: 35246839 DOI: 10.1111/jre.12983] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/25/2022] [Accepted: 02/07/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVES Many studies have been conducted to better understand the molecular mechanism involved with periodontitis progression. There has been growing interest in the potential impact of obesity on periodontitis onset and progression, but the mechanisms involved remain to be elucidated. The present study was designed to determine the impact of obesity on experimentally induced periodontitis in rats and identify novel pathways involved. METHODS Sixteen Holtzman rats were distributed into two groups (n = 8): ligature-induced periodontitis (P) and obesity plus ligature-induced periodontitis (OP). Obesity was induced by a high-fat diet for 70 days, whereas periodontitis was induced for 20 days, with a cotton thread placed around the upper first molars bilaterally. Alveolar bone loss was measured by microtomographic analysis and histologically by histometry on the hemimaxillae. The protein composition of the periodontal ligament was evaluated by proteomic analysis. RESULTS Data analysis (body weight, adipose tissue weight, and blood test) confirmed obesity induction, whereas bone loss was confirmed by micro-CT and histologic analyses. Proteome analysis from the periodontal ligament tissues (PDL) identified 819 proteins, 53 exclusive to the P group, 28 exclusive to the OP group, and 738 commonly expressed. Validation was performed by immunohistochemistry for selected proteins (spondin1, vinculin, and TRAP). CONCLUSION Histologically, it was found that obesity did not significantly affect bone loss resulting from periodontitis. However, the present study's findings indicated that obesity affects the proteome of PDL submitted to experimental periodontitis, allowing for identifying potential targets for personalized approaches.
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Affiliation(s)
- Maria Eduarda Scordamaia Lopes
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University - UNESP, Araraquara, Brazil
| | - Camila Chierici Marcantonio
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University - UNESP, Araraquara, Brazil
| | - Rafael Scaf de Molon
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University - UNESP, Araraquara, Brazil
| | - Paulo Sérgio Cerri
- Department of Morphology, School of Dentistry at Araraquara, São Paulo State University, Araraquara, Brazil
| | - Cristiane Ribeiro Salmon
- Division of Periodontics, Department of Prosthodontics and Periodontics, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, Brazil
| | - Luciana Souto Mofatto
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas - UNICAMP, Campinas, Brazil
| | - Francisco Humberto Nociti Junior
- Division of Periodontics, Department of Prosthodontics and Periodontics, Piracicaba Dental School, University of Campinas - UNICAMP, Piracicaba, Brazil.,São Leopoldo Mandic Research Center, Campinas, Brazil
| | - James Deschner
- Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University - UNESP, Araraquara, Brazil
| | - Andressa Vilas Boas Nogueira
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University - UNESP, Araraquara, Brazil.,Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
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Pires LC, Leandrin TP, Aroni MAT, de Oliveira GJPL, Barbeiro RH, Verzola MH, Cirelli JA, Pigossi SC. Digital Smile Design and mock-up technique in esthetic crown lengthening: 2-year follow-up of six cases. Int J Esthet Dent 2022; 17:58-75. [PMID: 35175008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The present case series aimed to evaluate the use of a Digital Smile Design (DSD) and mock-up technique for esthetic crown lengthening (ECL) surgery in six clinical cases with a 2-year follow-up. Six nonsmoker patients (five females, one male; aged 22 to 32 years), periodontally and systemically healthy, with inadequate tooth width/height ratio proportions associated with a gingival misalignment in the anterior maxilla were included. The DSDs were created using PowerPoint for all patients to evaluate gingival level and tooth form/contour. A wax-up and mock-up were created based on the DSD measurements. ECL surgeries were performed in all cases using the mock-up technique to determine the final gingival margin position and the amount of bone resection needed. A mock-up to bone crest distance of 3 mm was obtained in all cases. Using patient photographs, comparisons were made between the dental crown length (DCL) measurements obtained before the surgical procedure (baseline; T0), on the DSD template immediately postoperatively (IPO; T1), and at the 2-year follow-up (T2). A DCL augmentation of 1.16 ± 0.68 mm was obtained at T1, with an augmentation of 1.03 ± 0.73 mm at T2. Moreover, a minimal difference of 0.34 ± 0.74 mm between the DCL planned in the DSD template and the DCL obtained IPO was observed. In conclusion, the ECL procedure based on the DSD concept and mock-up technique proposed in this cases series was a predictable protocol for smile disharmony treatment in all the patients.
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Cirelli JA, Fiorini T, Moreira CHC, Molon RSD, Dutra TP, Sallum EA. Periodontal regeneration: is it still a goal in clinical periodontology? Braz Oral Res 2021; 35:e09. [PMID: 34586211 DOI: 10.1590/1807-3107bor-2021.vol35.0097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 03/31/2021] [Indexed: 11/22/2022] Open
Abstract
In the last decades, Periodontal Regeneration has been one of the most discussed topics in Periodontics, attracting the attention of researchers and clinicians. This can be justified by the evident and continuous progress observed in the field, characterized by a better understanding of the biological mechanisms involved, significant improvement of operative and technical principles, and the emergence of a wide range of biomaterials available for this purpose. Together, these aspects put the theme much in evidence in the search for functional and esthetic therapeutic solutions for periodontal tissue destruction. Despite the evident evolution, periodontal regeneration may be challenging and require the clinician to carefully evaluate each case before making a therapeutic decision. With a critical reassessment of the clinical and preclinical literature, the present study aimed to discuss the topic to answer whether Periodontal Regeneration is still a goal in clinical periodontology. The main aspects involved in the probability of success or failure of regenerative approaches were considered. A greater focus was given to intrabony and furcation defects, clinical conditions with greater therapeutic predictability. Aspects such as more appropriate materials/approaches, long-term benefits and their justification for a higher initial cost were discussed for each condition. In general, deep intrabony defects associated with residual pockets and buccal/lingual class II furcation lesions have predictable and clinically relevant results. Careful selection of the case (based on patient and defect characteristics) and excellent maintenance are essential conditions to ensure initial and long-term success.
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Affiliation(s)
- Joni Augusto Cirelli
- Universidade Estadual Paulista - Unesp, School of Dentistry at Araraquara, Department of Diagnosis and Surgery, Araraquara, SP, Brazil
| | - Tiago Fiorini
- Universidade Federal do Rio Grande do Sul - UFRGS, School of Dentistry, Department of Conservative Dentistry, Porto Alegre, RS, Brazil
| | - Carlos Heitor Cunha Moreira
- Universidade Federal de Santa Maria - UFSM, School of Dentistry, Department of Stomatology, Santa Maria, RS, Brazil
| | - Rafael Scaf de Molon
- Universidade Estadual Paulista - Unesp, School of Dentistry at Araraquara, Department of Diagnosis and Surgery, Araraquara, SP, Brazil
| | - Tamires Pereira Dutra
- Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School - Department of Prosthodontics and Periodontics, Piracicaba, SP, Brazil
| | - Enílson Antonio Sallum
- Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School - Department of Prosthodontics and Periodontics, Piracicaba, SP, Brazil
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Da Ponte Leguizamón N, de Molon RS, Coletto-Nunes G, Nogueira AVB, Rocha SV, Neo-Justino DM, Soares-Costa A, Cerri PS, Lerner UH, Souza PPC, Cirelli JA. Phytocystatin CsinCPI-2 Reduces Osteoclastogenesis and Alveolar Bone Loss. J Dent Res 2021; 101:216-225. [PMID: 34328027 DOI: 10.1177/00220345211027811] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Periodontal disease (PD) is a polymicrobial chronic inflammatory condition of the supporting tissues around the teeth, leading to the destruction of surrounding connective tissue. During the progression of PD, osteoclasts play a crucial role in the resorption of alveolar bone that eventually leads to the loss of teeth if the PD is left untreated. Therefore, the development of antiresorptive therapies targeting bone-resorbing cells will significantly benefit the treatment of PD. Here, we demonstrate the inhibitory effect of CsinCPI-2, a novel cysteine peptidase inhibitor from the orange tree, on periodontitis-induced inflammation, alveolar bone loss, and osteoclast differentiation. Using the ligature-induced periodontitis model in mice, we show that treatment with CsinCPI-2 (0.8 µg/g of body weight) significantly reduced inflammatory cell infiltrate in the connective tissue and prevented the loss of alveolar bone mass (BV/TV) caused by PD, effects associated with diminished numbers of TRAP-positive multinucleated cells. Furthermore, CsinCPI-2 significantly downregulated the numbers of inflammatory cells expressing CD3, CD45, MAC387, and IL-1β. In vitro, CsinCPI-2 inhibited RANKL-induced TRAP+ multinucleated osteoclast formation in mouse bone marrow macrophage cultures in a concentration-dependent manner. This effect was not due to cytotoxicity, as demonstrated by the MTT assay. CsinCPI-2 inhibited RANKL-induced mRNA expression of Acp5, Calcr, and Ctsk, as well as the RANKL-induced upregulation of Nfatc1, a crucial transcription factor for osteoclast differentiation. Based on our findings, CsinCPI-2 prevents bone loss induced by PD by controlling the inflammatory process and acting directly on osteoclastogenesis, suggesting an interesting potential for CsinCPI-2 in the strategy for PD treatment.
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Affiliation(s)
- N Da Ponte Leguizamón
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University-UNESP, Araraquara, Brazil
| | - R S de Molon
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University-UNESP, Araraquara, Brazil
| | - G Coletto-Nunes
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University-UNESP, Araraquara, Brazil
| | - A V B Nogueira
- Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - S V Rocha
- Department of Genetics and Evolution, Federal University of Sao Carlos, São Carlos, Brazil
| | - D M Neo-Justino
- Department of Genetics and Evolution, Federal University of Sao Carlos, São Carlos, Brazil
| | - A Soares-Costa
- Department of Genetics and Evolution, Federal University of Sao Carlos, São Carlos, Brazil
| | - P S Cerri
- Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, São Paulo State University-UNESP, Araraquara, Brazil
| | - U H Lerner
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute for Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - P P C Souza
- Innovation in Biomaterials Laboratory, Faculty of Dentistry, Federal University of Goiás, Goiânia, Brazil
| | - J A Cirelli
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University-UNESP, Araraquara, Brazil
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12
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Florian F, Guastaldi FPS, Cominotte MA, Pires LC, Guastaldi AC, Cirelli JA. Behavior of rat bone marrow stem cells on titanium surfaces modified by laser-beam and deposition of calcium phosphate. J Mater Sci Mater Med 2021; 32:57. [PMID: 33999340 PMCID: PMC8128786 DOI: 10.1007/s10856-021-06528-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 04/13/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVES The aim of this study was to evaluate the behavior of rat bone marrow stem cells seeded on a Ti-15Mo alloy surface modified by laser-beam irradiation followed by calcium phosphate deposition. MATERIALS AND METHODS A total of four groups were evaluated: polished commercially pure titanium (cpTi): Ti-P; laser irradiation + calcium phosphate deposition on cpTi: Ti-LCP; polished Ti-15Mo alloy: Ti15Mo-P; and laser irradiation + calcium phosphate deposition on Ti-15Mo alloy: Ti15Mo-LCP. Before and after laser irradiation and calcium phosphate deposition on the surfaces, physicochemical and morphological analyses were performed: Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDX). The wettability of the samples was evaluated by contact angle measurement. In addition, the behavior of osteoblast-like cells to these surfaces was evaluated for cell morphology, adhesion, proliferation and viability, evaluation of alkaline phosphatase formation and gene expression of osteogenesis markers. RESULTS Surfaces wet-abrade with grit paper (P) showed oriented groves, while the laser irradiation and calcium phosphate deposition (LCP) produced porosity on both cpTi and Ti15Mo alloy groups with deposits of hydroxyapatite (HA) crystals (SEM). EDX showed no contamination after surface modification in both metal samples. A complete wetting was observed for both LCP groups, whereas P surfaces exhibited high degree of hydrophobicity. There was a statistical difference in the intragroup comparison of proliferation and viability (p < 0.05). The ALP activity showed higher values in the Ti15Mo alloy at 10 days of culture. The gene expression of bone related molecules did not present significant differences at 7 and 14 days among different metals and surface treatments. CONCLUSION Ti15-Mo seems to be an alternative alloy to cpTi for dental implants. Surface treatment by laser irradiation followed by phosphate deposition seems to positively interact with bone cells. CLINICAL RELEVANCE Ti-15Mo alloy surface modified by laser-beam irradiation followed by calcium phosphate deposition may improve and accelerate the osseointegration process of dental implants.
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Affiliation(s)
- F Florian
- Departament of Morphology - Anatomy, Araraquara Dental School, UNESP, Araraquara, SP, Brazil
| | - F P S Guastaldi
- Department of Diagnosis and Surgery, Araraquara Dental School, UNESP, Araraquara, SP, Brazil
- Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, MA, USA
| | - M A Cominotte
- Department of Diagnosis and Surgery, Araraquara Dental School, UNESP, Araraquara, SP, Brazil
| | - L C Pires
- Department of Diagnosis and Surgery, Araraquara Dental School, UNESP, Araraquara, SP, Brazil
| | - A C Guastaldi
- Department of Physical Chemistry, Institute of Chemistry of Araraquara, UNESP, Araraquara, SP, Brazil
| | - J A Cirelli
- Department of Diagnosis and Surgery, Araraquara Dental School, UNESP, Araraquara, SP, Brazil.
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13
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da Costa Fernandes C, Rodríguez VMO, Soares-Costa A, Cirelli JA, Justino DMN, Roma B, Zambuzzi WF, Faria G. Cystatin-like protein of sweet orange (CsinCPI-2) modulates pre-osteoblast differentiation via β-Catenin involvement. J Mater Sci Mater Med 2021; 32:33. [PMID: 33751248 PMCID: PMC7985097 DOI: 10.1007/s10856-021-06504-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 03/07/2021] [Indexed: 06/12/2023]
Abstract
Phytocystatins are endogenous cysteine-protease inhibitors present in plants. They are involved in initial germination rates and in plant defense mechanisms against phytopathogens. Recently, a new phytocystatin derived from sweet orange, CsinCPI-2, has been shown to inhibit the enzymatic activity of human cathepsins, presenting anti-inflammatory potential and pro-osteogenic effect in human dental pulp cells. The osteogenic potential of the CsinCPI-2 protein represents a new insight into plants cysteine proteases inhibitors and this effect needs to be better addressed. The aim of this study was to investigate the performance of pre-osteoblasts in response to CsinCPI-2, mainly focusing on cell adhesion, proliferation and differentiation mechanisms. Together our data show that in the first hours of treatment, protein in CsinCPI-2 promotes an increase in the expression of adhesion markers, which decrease after 24 h, leading to the activation of Kinase-dependent cyclines (CDKs) modulating the transition from G1 to S phases cell cycle. In addition, we saw that the increase in ERK may be associated with activation of the differentiation profile, also observed with an increase in the B-Catenin pathway and an increase in the expression of Runx2 in the group that received the treatment with CsinCPI-2.
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Affiliation(s)
- Célio da Costa Fernandes
- Department of Chemistry and Biochemistry, Laboratory of Bioassays and Cell Dynamics, Institute of Biosciences, Sao Paulo State University - UNESP, Botucatu, São Paulo, Brazil
| | - Victor Manuel Ochoa Rodríguez
- Department of Restorative Dentistry, School of Dentistry at Araraquara, Sao Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Andrea Soares-Costa
- Department of Genetic and Evolution, Federal University of Sao Carlos, São Carlos, Brazil
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University-UNESP, Araraquara, São Paulo, Brazil
| | | | - Bárbara Roma
- Department of Restorative Dentistry, School of Dentistry at Araraquara, Sao Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Willian Fernando Zambuzzi
- Department of Chemistry and Biochemistry, Laboratory of Bioassays and Cell Dynamics, Institute of Biosciences, Sao Paulo State University - UNESP, Botucatu, São Paulo, Brazil.
| | - Gisele Faria
- Department of Restorative Dentistry, School of Dentistry at Araraquara, Sao Paulo State University - UNESP, Araraquara, São Paulo, Brazil.
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Cirelli T, Oliveira GJPLD, Nogueira AVB, Ribaldo IJP, Furuta EYD, Cirelli JA. Effect of electric, ultrasonic and manual toothbrushes on biofilm removal and gingivitis control. Braz J Oral Sci 2021. [DOI: 10.20396/bjos.v20i00.8659280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Aim: To evaluate the effect of manual (M), electric (E) and ultrasonic (US) toothbrushes on the removal of oral biofilm and control of gingivitis. Also, the roughness and tooth wear production were evaluated in vitro. Methods: For the in vitro analyses, thirty bovine dentin specimens were submitted to a 3-month brushing simulation (9 minutes) with the three types of toothbrushes (n = 10). Subsequently, a randomized controlled clinical trial was performed with 36 patients divided into 3 groups according to the toothbrushes used (n = 12). Gingival index, visible plaque index and the volume of crevicular fluid were evaluated at baseline and 3 months after the beginning of the toothbrush use. Furthermore, the performance of the biofilm removal per brushing cycle of 1 and 3 minutes with each toothbrush was made monthly until the end of the experiment. Results: The US group had the highest dentin wear. Clinically, the US group had a lower plaque index at 3 months than the M group. The M group also showed less biofilm removal efficiency from the second month of follow-up and more worn bristles at the end of the 3 month period than the E and US groups. Conclusion: The ultrasonic, electric and manual toothbrushes showed no differences in gingivitis control in the present study. The ultrasonic and electric toothbrushes had a more significant effect on biofilm removal than a manual toothbrush, but the ultrasonic toothbrush promoted greater dentin tissue wear.
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Marcantonio CC, Nogueira AVB, Leguizamón NDP, de Molon RS, Lopes MES, Silva RCL, Cerri PS, Deschner J, Cirelli JA. Effects of obesity on periodontal tissue remodeling during orthodontic movement. Am J Orthod Dentofacial Orthop 2021; 159:480-490. [PMID: 33563505 DOI: 10.1016/j.ajodo.2019.12.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 11/01/2019] [Accepted: 12/01/2019] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Orthodontic movement triggers a sequence of cellular and molecular events that may be affected by different systemic conditions. This study evaluated the effect of obesity on rat periodontal tissue remodeling induced by mechanical orthodontic force. METHODS Thirty-two Holtzman rats were distributed into 4 groups: control, obesity induction (O), orthodontic movement (M), and obesity induction and orthodontic movement (OM). Obesity was induced by a high-fat diet for 90 days. After 15 days of orthodontic movement, the animals were killed. Obesity induction was confirmed by animal body weight, adipose tissue weight, and serologic analysis. Periodontal tissue remodeling was evaluated using microcomputed tomography and histologic analysis. The gene expression of adipokines and cytokines in gingival tissues was evaluated. RESULTS An increase in body and adipose tissue weight was observed in the obesity induction groups. The O group presented an increase in lipids and blood glucose. The OM group showed a decrease in bone volume fraction and bone mineral density compared with all other groups and a tendency for more rapid tooth movement than the M group. The OM group showed a higher quantity of inflammatory cells and higher Mmp1 expression than the O group. The O and OM groups showed higher Nampt expression than the control group and lower Nampt expression than the M group. CONCLUSIONS Obesity modulates periodontal tissue remodeling during orthodontic movement and results in more inflammation and bone loss than in nonobese animals.
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Affiliation(s)
- Camila Chierici Marcantonio
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Andressa Vilas Boas Nogueira
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara, São Paulo, Brazil; Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Rhineland-Palatinate, Germany
| | - Natalia Da Ponte Leguizamón
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Rafael Scaf de Molon
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Maria Eduarda Scordamaia Lopes
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Renata Cristina Lima Silva
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Paulo Sergio Cerri
- Department of Morphology, School of Dentistry at Araraquara, São Paulo State University, Araraquara, São Paulo, Brazil
| | - James Deschner
- Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Rhineland-Palatinate, Germany
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara, São Paulo, Brazil.
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Pinto JC, Torres FFE, Pivoto-João MMB, Cirelli JA, Guerreiro-Tanomaru JM, Tanomaru-Filho M. Filling Ability and Flow of Root Canal Sealers: A Micro-Computed Tomographic Study. Braz Dent J 2020; 31:499-504. [PMID: 33146333 DOI: 10.1590/0103-6440202003328] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/14/2020] [Indexed: 11/21/2022] Open
Abstract
This study evaluated by micro-computed tomography (μCT) the filling ability in curved root canals, besides the flow of AH Plus (AHP) and Neo MTA Plus (NMTAP) sealers using different methodologies. Mandibular molars mesial roots with two root canals and degree of curvature between 20° and 40° were selected. The specimens were prepared with the ProDesign R system up to size 35.05 and were filled with the sealers by a continuous wave of condensation technique, Thermo Pack II (n=12). The teeth were scanned using μCT after root canal preparation and obturation. The volumetric percentage of filling material and voids were calculated. Flow was evaluated based on ISO 6876/2012 (n=10). Flow and filling were also evaluated in μCT using a glass plate with a central cavity and four grooves from the central cavity (n=6). Flow was linearly calculated into the grooves. The central cavity filling (CCF) and lateral cavity filling (LCF) were calculated in mm³. Data were submitted to non-paired t test with a significance threshold at 5%. The percentage of filling and voids between the root canals filled with AHP or NMTAP was similar (p>0.05). NMTAP presented the lowest flow in conventional test (p<0.05). Using μCT, sealers had similar CCF, LCF and linear flow (p>0.05). In conclusion, NMTAP and AHP had similar filling ability in curved mesial root canals of mandibular molars without presence of isthmus. Although AHP presented better flow than NMTAP using ISO methodology, there was no difference between these materials regarding volumetric filling when evaluated by μCT.
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Affiliation(s)
- Jáder Camilo Pinto
- Department of Restorative Dentistry, School of Dentistry, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil
| | | | | | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil
| | | | - Mário Tanomaru-Filho
- Department of Restorative Dentistry, School of Dentistry, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil
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17
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Zuppardo ML, Santamaria M, Ferreira CL, Longo M, Cirelli JA, Santamaria MP, Jardini MAN. Effect of two corticotomy protocols on periodontal tissue and orthodontic movement. J Appl Oral Sci 2020; 28:e20190766. [PMID: 32638830 PMCID: PMC7340209 DOI: 10.1590/1678-7757-2019-0766] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 05/19/2020] [Indexed: 11/25/2022] Open
Abstract
Objective To compare two corticotomy surgical protocols in rats to verify whether they alter conventional orthodontic movement. Methodology Sixty Wistar rats were divided into three groups – orthodontic movement (CG), orthodontic movement and corticotomy (G1) and orthodontic movement with corticotomy and decortication (G2) – and euthanized after 7 and 14 days. Tooth movement (mm), bone volume fraction and bone volume ratio to total volume (BV/TV), and bone mineral density (BMD) were evaluated by micro-CT. The total amount of bone was measured in square millimeters and expressed as the percentage of bone area in the histomorphometry. The number of positive TRAP cells and RANK/RANKL/OPG interaction were also investigated. Results Day 14 showed a statistically significant difference in orthodontic tooth movement in CG compared with G1 (7.52 mm; p=0.009) and G2 (7.36 mm; p=0.016). A micro-CT analysis revealed a difference between CG, G1 and G2 regarding BV/TV, with G1 and G2 presenting a lower BV/TV ratio at 14 days (0.77 and 0.73 respectively); we found no statistically significant differences regarding BMD. There was a difference in the total amount of bone in the CG group between 7 and 14 days. At 14 days, CG presented a significantly higher bone percentage than G1 and G2. Regarding TRAP, G2 had more positive cells at 7 and 14 days compared with CG and G1. Conclusion Corticotomy accelerates orthodontic movement. Decortication does not improve corticotomy efficiency.
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Affiliation(s)
| | - Milton Santamaria
- Programa de Pós-Graduação em Ortodontia, Centro Universitário Hermínio Ometto, UNIARARAS, Araras, Brasil
| | | | - Mariéllen Longo
- Universidade Estadual Paulista, São José dos Campos, São Paulo, Brasil
| | - Joni Augusto Cirelli
- Faculdade de Odontologia, Universidade Estadual Paulista, Araraquara, São Paulo, Brasil
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da Silva VC, de Molon RS, Martins RP, Ribeiro FS, Pontes AEF, Zandim-Barcelos DL, Leite FRM, Benatti Neto C, Marcantonio RAC, Cirelli JA. Effects of orthodontic tooth extrusion produced by different techniques, on the periodontal tissues: a histological study in dogs. Arch Oral Biol 2020; 116:104768. [PMID: 32480012 DOI: 10.1016/j.archoralbio.2020.104768] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 01/18/2023]
Abstract
OBJECTIVE The aim of this study was to compare the periodontal tissue changes resulting from different methods of orthodontic tooth extrusion in dogs. MATERIALS AND METHODS Notches were surgically prepared in the root surface at the bone crest level of the first premolars of mongrel dogs. After 37 days, extrusion of the first lower and upper premolars was randomly performed by 3 different methods: conventional orthodontic extrusion (OE); open flap debridement performed immediately before orthodontic extrusion (OF); and orthodontic extrusion associated with weekly fiberotomy and scaling (FS). For all groups, extrusion was performed for 21 days followed by one-month retention and sacrifice. Periodontal parameters, descriptive histology, and histomorphometric analyses were performed at the end of the experimental period. RESULTS The median extrusion was 2.25 in the fiberotomy group, 2.0 mm in the open flap group and 1.0 mm in the orthodontic extrusion group with no significant differences between groups. The highest distance between reference notch and bone crest was observed in the fiberotomy group (p < 0.05). Histologically, radicular resorption repaired with cellular cementum was detected in all groups. CONCLUSIONS Tooth extrusion was successfully achieved with all of the different methods of orthodontic tooth extrusion with no statistical significance between techniques. The fiberotomy approach was effective in avoiding coronal displacement of periodontal tissues. Fiberotomy associated with scaling should be indicated if the objective of the treatment is extrusion without periodontal tissue displacement.
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Affiliation(s)
- Vanessa Camila da Silva
- Department of Dentistry II, School of Dentistry at São Luís, Maranhão Federal University - UFMA, São Luís, Maranhão, Brazil.
| | - Rafael Scaf de Molon
- Department of Diagnostic and Surgery, School of Dentistry at Araraquara, Universidade Estadual Paulista (UNESP), Araraquara, São Paulo, Brazil
| | | | | | | | - Daniela Leal Zandim-Barcelos
- Department of Diagnostic and Surgery, School of Dentistry at Araraquara, Universidade Estadual Paulista (UNESP), Araraquara, São Paulo, Brazil
| | | | - Carlos Benatti Neto
- Department of Physiology and Pathology, School of Dentistry at Araraquara, Universidade Estadual Paulista (UNESP), Araraquara, São Paulo, Brazil
| | | | - Joni Augusto Cirelli
- Department of Diagnostic and Surgery, School of Dentistry at Araraquara, Universidade Estadual Paulista (UNESP), Araraquara, São Paulo, Brazil
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Kim YJ, de Molon RS, da Silva VC, da Veiga Conrado MCA, Spolidório LC, Roque-Barreira MCA, Cirelli JA. Topical application of lectin Artin M improves wound healing in defects created in the palatal mucosa: an in vivo study in dogs. Odontology 2020; 108:560-568. [PMID: 32076883 DOI: 10.1007/s10266-020-00495-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 02/05/2020] [Indexed: 12/24/2022]
Abstract
Previous studies have shown that topical application of lectin Artin-M accelerates wound healing in the rat oral mucosa. The aim of this study was to evaluate, by means of histology and immunohistochemistry (IHC) the effects of Artin-M on wound healing in the palatal mucosa in dogs. Three full thickness wounds of 6 mm diameter were surgically created in the palatal mucosa of twenty dogs and randomly divided into three groups according to one of the treatment assigned: Group C-Control (coagulum); Group A-Artin-M gel; Group V-Vehicle (carboxymethylcellulose 3%). Each animal received all the three experimental treatments. Afterwards, four animals were killed at 2, 4, 7, 14 and 21 days post-surgery. Wounded areas were photographed and scored for macroscopic evaluation. Biopsies were harvested and used for descriptive histological analysis, proliferating cell nuclear antigen IHC and measurement of myeloperoxidase activity. The results demonstrated faster wound closure in group A in comparison to the other groups in all the periods evaluated. Histological analyses exhibited improved re-epithelialization and collagen fiber formation resulting in faster maturation of granulation tissue in group A compared to the other groups by day 14. Treatment with Artin-M gel significantly induced cell proliferation and increased volumetric density of fibroblasts at day 2 and 4 (p < 0.05). Neutrophil infiltration in group A was significantly higher than the other groups (p < 0.05) at the same time points. Collectively, our findings demonstrated that Artin-M may potentially favor wound healing on palatal mucosa lesions via recruitment of neutrophils and promotion of cell proliferation.
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Affiliation(s)
- Yeon Jung Kim
- Division of PeriodontologyDepartment of Diagnosis and Surgery, School of Dentistry, Sao Paulo State University-UNESP, R Humaita, 1680, Araraquara, São Paulo, 14801-903, Brazil
- Department of Implantology, University of Santo Amaro, Sao Paulo, Brazil
| | - Rafael Scaf de Molon
- Division of PeriodontologyDepartment of Diagnosis and Surgery, School of Dentistry, Sao Paulo State University-UNESP, R Humaita, 1680, Araraquara, São Paulo, 14801-903, Brazil
| | - Vanessa Camila da Silva
- Department of Dentistry II, School of Dentistry, Federal University of Maranhao-UFMA, São Luís, Maranhao, Brazil
| | | | - Luis Carlos Spolidório
- Department of Physiology and Pathology, School of Dentistry, Sao Paulo State University-UNESP, Araraquara, Sao Paulo, Brazil
| | | | - Joni Augusto Cirelli
- Division of PeriodontologyDepartment of Diagnosis and Surgery, School of Dentistry, Sao Paulo State University-UNESP, R Humaita, 1680, Araraquara, São Paulo, 14801-903, Brazil.
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Leguizamón NDP, Rodrigues EM, de Campos ML, Nogueira AVB, Viola KS, Schneider VK, Neo-Justino DM, Tanomaru-Filho M, Zambuzzi WF, Henrique-Silva F, Soares-Costa A, Faria G, Cirelli JA. In vivo and in vitro anti-inflammatory and pro-osteogenic effects of citrus cystatin CsinCPI-2. Cytokine 2019; 123:154760. [DOI: 10.1016/j.cyto.2019.154760] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 06/06/2019] [Accepted: 06/10/2019] [Indexed: 11/29/2022]
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de Molon RS, Thurlings RM, Walgreen B, Helsen MM, van der Kraan PM, Cirelli JA, Koenders MI. Systemic Resolvin E1 (RvE1) Treatment Does Not Ameliorate the Severity of Collagen-Induced Arthritis (CIA) in Mice: A Randomized, Prospective, and Controlled Proof of Concept Study. Mediators Inflamm 2019; 2019:5689465. [PMID: 31780864 PMCID: PMC6875002 DOI: 10.1155/2019/5689465] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 07/17/2019] [Accepted: 09/03/2019] [Indexed: 12/23/2022] Open
Abstract
Specialized proresolving mediators (SPRM), which arise from n-3 long-chain polyunsaturated fatty acids (n-3FA), promote resolution of inflammation and may help to prevent progression of an acute inflammatory response into chronic inflammation in patients with arthritis. Thus, this study is aimed at determining whether systemic RvE1 treatment reduces arthritis onset and severity in murine collagen-induced arthritis (CIA) and spontaneous cytokine production by human rheumatoid arthritis (RA) synovial explants. 10-week-old DBA1/J male mice were subjected to CIA and treated systemically with 0.1 μg RvE1, 1 μg RvE1, 5 mg/kg anti-TNF (positive control group), PBS (negative control group), or with a combination of 1 μg of RvE1 plus 5 mg/kg anti-TNF using prophylactic or therapeutic strategies. After CIA immunization, mice were treated twice a week by RvE1 or anti-TNF for 10 days. Arthritis development was assessed by visual scoring of paw swelling and histology of ankle joints. Moreover, human RA synovial explants were incubated with 1 nM, 10 nM, or 100 nM of RvE1, and cytokine levels (IL-1β, IL-6, IL-8, IL-10, INF-γ, and TNF-α) were measured using Luminex bead array. CIA triggered significant inflammation in the synovial cavity, proteoglycan loss, and cartilage and bone destruction in the ankle joints of mice. Prophylactic and therapeutic RvE1 regimens did not ameliorate CIA incidence and severity. Anti-TNF treatment significantly abrogated signs of joint inflammation, bone erosion, and proteoglycan depletion, but additional RvE1 treatment did not further reduce the anti-TNF-mediated suppression of the disease. Treatment with different concentrations of RvE1 did not decrease the expression of proinflammatory cytokines in human RA synovial explants in the studied conditions. Collectively, our findings demonstrated that RvE1 treatment was not an effective approach to treat CIA in DBA1/J mice in both prophylactic and therapeutic strategies. Furthermore, no effects were noticed when human synovial explants were incubated with different concentrations of RvE1.
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Affiliation(s)
- Rafael Scaf de Molon
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University-UNESP, Araraquara, SP, Brazil
- Department of Rheumatology, Radboud University Medical Center, 6500 HB Nijmegen, Netherlands
| | - Rogier M. Thurlings
- Department of Rheumatology, Radboud University Medical Center, 6500 HB Nijmegen, Netherlands
| | - Birgitte Walgreen
- Department of Rheumatology, Radboud University Medical Center, 6500 HB Nijmegen, Netherlands
| | - Monique M. Helsen
- Department of Rheumatology, Radboud University Medical Center, 6500 HB Nijmegen, Netherlands
| | - Peter M. van der Kraan
- Department of Rheumatology, Radboud University Medical Center, 6500 HB Nijmegen, Netherlands
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University-UNESP, Araraquara, SP, Brazil
| | - Marije I. Koenders
- Department of Rheumatology, Radboud University Medical Center, 6500 HB Nijmegen, Netherlands
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Memmert S, Nogueira AVB, Damanaki A, Nokhbehsaim M, Rath-Deschner B, Götz W, Gölz L, Cirelli JA, Till A, Jäger A, Deschner J. Regulation of the autophagy-marker Sequestosome 1 in periodontal cells and tissues by biomechanical loading. J Orofac Orthop 2019; 81:10-21. [PMID: 31591651 DOI: 10.1007/s00056-019-00197-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 08/20/2019] [Indexed: 01/24/2023]
Abstract
PURPOSE Orthodontic treatment is based on the principle of force application to teeth and subsequently to the surrounding tissues and periodontal cells. Sequestosome 1 (SQSTM1) is a well-known marker for autophagy, which is an important cellular mechanism of adaptation to stress. The aim of this study was to analyze whether biomechanical loading conditions regulate SQSTM1 in periodontal cells and tissues, thereby providing further information on the role of autophagy in orthodontic tooth movement. METHODS Periodontal ligament (PDL) fibroblasts were exposed to cyclic tensile strain of low magnitude (3%, CTSL), and the regulation of autophagy-associated targets was determined with an array-based approach. SQSTM1 was selected for further biomechanical loading experiments with dynamic and static tensile strain and assessed via real-time polymerase chain reaction (RT-PCR) and immunoblotting. Signaling pathways involved in SQSTM1 activation were analyzed by using specific inhibitors, including an autophagy inhibitor. Finally, SQSTM1 expression was analyzed in gingival biopsies and histological sections of rats in presence and absence of orthodontic forces. RESULTS Multiple autophagy-associated targets were regulated by CTSL in PDL fibroblasts. All biomechanical loading conditions tested increased the SQSTM1 expression significantly. Stimulatory effects of CTSL on SQSTM1 expression were diminished by inhibition of the c‑Jun N‑terminal kinase (JNK) pathway and of autophagy. Increased SQSTM1 levels after CTSL were confirmed by immunoblotting. Orthodontic force application also led to significantly elevated SQTSM1 levels in the gingiva and PDL of treated animals as compared to control. CONCLUSIONS Our in vitro and in vivo findings provide evidence of a role of SQSTM1 and thereby autophagy in orthodontic tooth movement.
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Affiliation(s)
- S Memmert
- Department of Orthodontics, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany. .,Section of Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Bonn, Germany.
| | - A V B Nogueira
- Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - A Damanaki
- Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - M Nokhbehsaim
- Section of Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Bonn, Germany
| | - B Rath-Deschner
- Department of Orthodontics, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany
| | - W Götz
- Department of Orthodontics, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany
| | - L Gölz
- Department of Orthodontics and Orofacial Orthopedics, University of Erlangen, Erlangen, Germany.,Institute of Human Genetics, University Hospital of Bonn, Bonn, Germany
| | - J A Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, University Estadual Paulista-UNESP, Araraquara, Brazil
| | - A Till
- Institute of Reconstructive Neurobiology, Life and Brain Center, University of Bonn, Bonn, Germany
| | - A Jäger
- Department of Orthodontics, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany
| | - J Deschner
- Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
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Nokhbehsaim M, Nogueira AVB, Memmert S, Damanaki A, Eick S, Cirelli JA, Deschner J. Regulation of ghrelin receptor by microbial and inflammatory signals in human osteoblasts. Braz Oral Res 2019; 33:e025. [PMID: 31038565 DOI: 10.1590/1807-3107bor-2019.vol33.0025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 02/26/2019] [Indexed: 01/09/2023] Open
Abstract
Recently, it has been suggested that the anti-inflammatory hormone ghrelin (GHRL) and its receptor GHS-R may play a pivotal role in periodontal health and diseases. However, their exact regulation and effects in periodontitis are not known. The aim of this in-vitro study was to investigate the effect of microbial and inflammatory insults on the GHS-R1a expression in human osteoblast-like cells. MG-63 cells were exposed to interleukin (IL)-1β and Fusobacterium nucleatum in the presence and absence of GHRL for up to 2 d. Subsequently, gene expressions of GHS-R1a, inflammatory mediators and matrix metalloproteinase were analyzed by real-time PCR. GHS-R protein synthesis and NF-κB p65 nuclear translocation were assessed by immunocytochemistry and immunofluorescence microscopy, respectively. IL-1β and F. nucleatum caused a significant upregulation of GHS-R1a expression and an increase in GHS-R1a protein. Pre-incubation with a MEK1/2 inhibitor diminished the IL-1β-induced GHS-R1a upregulation. IL-1β and F. nucleatum also enhanced the expressions of cyclooxygenase 2, CC-chemokine ligand 2, IL-6, IL-8, and matrix metalloproteinase 1, but these stimulatory effects were counteracted by GHRL. By contrast, the stimulatory actions of IL-1β and F. nucleatum on the GHS-R1a expression were further enhanced by GHRL. Our study provides original evidence that IL-1β and F. nucleatum regulate the GHS-R/GHRL system in osteoblast-like cells. Furthermore, we demonstrate for the first time that the proinflammatory and proteolytic actions of IL-1β and F. nucleatum on osteoblast-like cells are inhibited by GHRL. Our study suggests that microbial and inflammatory insults upregulate GHS-R1a, which may represent a protective negative feedback mechanism in human bone.
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Affiliation(s)
- Marjan Nokhbehsaim
- University of Bonn, Center of Dento-Maxillo-Facial Medicine, Section of Experimental Dento-Maxillo-Facial Medicine, Bonn, Germany
| | - Andressa Vilas Boas Nogueira
- University Medical Center, Johannes Gutenberg University, Department of Periodontology and Operative Dentistry, Mainz, Germany
| | - Svenja Memmert
- University of Bonn, Center of Dento-Maxillo-Facial Medicine, Department of Orthodontics, Bonn, Germany
| | - Anna Damanaki
- University Medical Center, Johannes Gutenberg University, Department of Periodontology and Operative Dentistry, Mainz, Germany
| | - Sigrun Eick
- University of Bern, Department of Periodontology, Laboratory of Oral Microbiology, Bern, Switzerland
| | - Joni Augusto Cirelli
- Universidade Estadual Paulista - UNESP, School of Dentistry of Araraquara, Department of Diagnosis and Surgery, Araraquara, São Paulo, Brazil
| | - James Deschner
- University Medical Center, Johannes Gutenberg University, Department of Periodontology and Operative Dentistry, Mainz, Germany
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de Molon RS, Park CH, Jin Q, Sugai J, Cirelli JA. Characterization of ligature-induced experimental periodontitis. Microsc Res Tech 2018; 81:1412-1421. [PMID: 30351474 DOI: 10.1002/jemt.23101] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/27/2018] [Accepted: 06/30/2018] [Indexed: 01/17/2023]
Abstract
We sought to better characterize the progression of periodontal tissue breakdown in rats induced by a ligature model of experimental periodontal disease (PD). A total of 60 male Sprague-Dawley rats were evenly divided into an untreated control group and a PD group induced by ligature bilaterally around first and second maxillary molars. Animals were sacrificed at 1, 3, 5, 7, 14, and 21 days after the induction of PD. Alveolar bone loss was evaluated by histomorphometry and microcomputed tomography (μCT). The immune-inflammatory process in the periodontal tissue was assessed using descriptive histologic analysis and quantitative polymerase chain reaction (qPCR). This ligature model resulted in significant alveolar bone loss and increased inflammatory process of the periodontal tissues during the initial periods of evaluation (0-14 days). A significant increase in the gene expression of pro-inflammatory cytokines, interleukin-1β (IL-1β), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α), and proteins involved in osteoclastogenesis, receptor activator of nuclear factor-k B ligand (RANKL) and osteoprotegerin (OPG) was observed in the first week of analysis. In the later periods of evaluation (14-21 days), no significant alterations were noted with regard to inflammatory processes, bone resorption, and expression of cytokine genes. The ligature-induced PD model resulted in progressive alveolar bone resorption with two different phases: Acute (0-14 days), characterized by inflammation and rapid bone resorption, and chronic (14-21 days) with no significant progression of bone loss. Furthermore, the gene expressions of IL-6, IL-1β, TNF-α, RANKL, and OPG were highly increased during the progress of PD in the early periods. RESEARCH HIGHLIGHTS: Ligature-induced bone resorption in rats occurred in the initial periods after disease induction The bone resorption was characterized by two distinct phases: Acute (0-14 days), with pronounced inflammation and alveolar bone loss Chronic phase (14-21 days): No further disease progression Several pro-inflammatory cytokines were increased during the progress of periodontitis.
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Affiliation(s)
- Rafael Scaf de Molon
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University-UNESP, Araraquara, Brazil
| | - Chan Ho Park
- Department of Dental Biomaterials, College of Dentistry, Institute for Biomaterials Research and Development, Kyungpook National University, Daegu, Republic of Korea
| | - Qiming Jin
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan
| | - Jim Sugai
- Department of Periodontics and Oral Medicine and Center for Craniofacial Regeneration, School of Dentistry, University of Michigan, Ann Arbor, Michigan
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University-UNESP, Araraquara, Brazil
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Sommer MEL, Dalia RA, Nogueira AVB, Cirelli JA, Vinolo MAR, Fachi JL, Oliveira CA, Andrade TAM, Mendonça FAS, Santamaria M, Felonato M. Immune response mediated by Th1 / IL-17 / caspase-9 promotes evolution of periodontal disease. Arch Oral Biol 2018; 97:77-84. [PMID: 30366216 DOI: 10.1016/j.archoralbio.2018.09.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/12/2018] [Accepted: 09/14/2018] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Periodontitis is characterized by inflammatory mediators beyond T lymphocyte function and phenotype (Th1/Th2/Th17). The clinical diversity in periodontitis makes it difficult to characterize the immune response in patients. This study evaluated the profile of the adaptive immune response in the periodontal disease model. METHODS 72 rats (Wistar) were divided into a control group (CTL/day 0) and periodontitis (PD15/15 days and PD60/60 days). In the PD15 and PD60 groups, periodontal disease was induced by ligature with a silk thread placed in the cervical region of the upper first molar. After euthanasia, the periodontal tissue was analyzed by flow cytometry (CD4, CD8, CD25, CD44), semi-quantitative RT-PCR (T-bet, GATA-3, RORγt), semi-quantitative RT-PCR and ELISA IFN-γ, TNF-α, IFN-γ, IL-4, IL-6, IL-10, IL-17) and by Western blotting (Caspase-9, PCNA). RESULTS The number of CD4+CD25+, CD4+CD44+, CD8+CD25+ and CD8+CD44+ cells and expression levels of T-bet and GATA-3 are increased in the PD60 group compared to PD15 and CTL. The RORγ-t gene transcript increased in the PD15 group in relation to PD60 and CTL. The cytokines IFN-γ, TNF-α and IL-17 increased in the PD60 group in relation to PD15. The expression of Caspase-9 was higher in the PD60 group than in PD15. CONCLUSIONS The results suggest that the evolution of gingivitis to periodontitis is related to the accumulation of activated Th1 cells (IFN-γ and TNF-α) associated with the presence of increased IL-17. Studies with inhibitors of these cytokines in periodontal disease may lead to therapy directed at blocking the inflammatory process in this pathology, interrupting bone loss.
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Affiliation(s)
- M E L Sommer
- Graduate Program in Biomedical Sciences, Centro Universitario Hermınio Ometto (UNIARARAS), Brazil
| | - R A Dalia
- Graduate Program in Biomedical Sciences, Centro Universitario Hermınio Ometto (UNIARARAS), Brazil
| | - A V B Nogueira
- Dental School, Department of Diagnosis and Surgery, São Paulo State University, Araraquara, São Paulo, Brazil
| | - J A Cirelli
- Dental School, Department of Diagnosis and Surgery, São Paulo State University, Araraquara, São Paulo, Brazil
| | - M A R Vinolo
- Department of Genetics, Evolution and Bioagents, Institute of Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - J L Fachi
- Department of Genetics, Evolution and Bioagents, Institute of Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - C A Oliveira
- Graduate Program in Biomedical Sciences, Centro Universitario Hermınio Ometto (UNIARARAS), Brazil
| | - T A M Andrade
- Graduate Program in Biomedical Sciences, Centro Universitario Hermınio Ometto (UNIARARAS), Brazil
| | - F A S Mendonça
- Graduate Program in Biomedical Sciences, Centro Universitario Hermınio Ometto (UNIARARAS), Brazil
| | - M Santamaria
- Graduate Program in Biomedical Sciences, Centro Universitario Hermınio Ometto (UNIARARAS), Brazil; Graduate Program in Odontology, Centro Universitario Hermınio Ometto (UNIARARAS), Brazil
| | - M Felonato
- Graduate Program in Biomedical Sciences, Centro Universitario Hermınio Ometto (UNIARARAS), Brazil.
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Saska S, Pires LC, Cominotte MA, Mendes LS, de Oliveira MF, Maia IA, da Silva JVL, Ribeiro SJL, Cirelli JA. Three-dimensional printing and in vitro evaluation of poly(3-hydroxybutyrate) scaffolds functionalized with osteogenic growth peptide for tissue engineering. Materials Science and Engineering: C 2018; 89:265-273. [DOI: 10.1016/j.msec.2018.04.016] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 02/01/2018] [Accepted: 04/10/2018] [Indexed: 01/29/2023]
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Terenzi M, Pigossi SC, Pires LC, Cirelli JA, Sampaio JE. Modified approach for keratinized tissue augmentation in multiple teeth. J Indian Soc Periodontol 2018; 21:512-516. [PMID: 29551874 PMCID: PMC5846252 DOI: 10.4103/jisp.jisp_332_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This case report demonstrated a modified technique of free gingival graft (FGG) aiming to increase keratinized attached tissue in large recipient areas. A FGG to increase the amount of attached gingival tissue, facilitate oral hygiene, and prevent further clinical attachment loss was realized in two patients. Because the extensive recipient area, a modified technique was performed to obtain a smaller graft of the donor area. A template of the graft was made about 25%–30% smaller than the total recipient area. After graft removal, interspersed incisions were made in the upper and lower edges of it. After 9–24 months of follow-up, the final width of the keratinized tissue was 4.0–4.4 times larger in comparison to initial clinical condition. In conclusion, this FGG technique can be considered an alternative to gain sufficient amount of keratinized gingival tissue using a smaller graft.
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Affiliation(s)
- Mayara Terenzi
- Department of Diagnosis and Surgery, Araraquara Dental School, University Estadual Paulista, Araraquara, SP, Brazil
| | - Suzane Cristina Pigossi
- Department of Diagnosis and Surgery, Araraquara Dental School, University Estadual Paulista, Araraquara, SP, Brazil
| | - Luana Carla Pires
- Department of Diagnosis and Surgery, Araraquara Dental School, University Estadual Paulista, Araraquara, SP, Brazil
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, Araraquara Dental School, University Estadual Paulista, Araraquara, SP, Brazil
| | - José Eduardo Sampaio
- Department of Diagnosis and Surgery, Araraquara Dental School, University Estadual Paulista, Araraquara, SP, Brazil
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Kim YJ, de Molon RS, Horiguti FR, Contador GP, Coelho MA, Mascarenhas VI, de Souza Faloni AP, Cirelli JA, Sendyk WR. Vertical Bone Augmentation Using Deproteinized Bovine Bone Mineral, Absorbable Collagen Sponge, and Recombinant Human Bone Morphogenetic Protein-2: An In Vivo Study in Rabbits. Int J Oral Maxillofac Implants 2018; 33:512–522. [PMID: 29543927 DOI: 10.11607/jomi.5959] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
PURPOSE The objective of this investigation was to assess vertical bone augmentation using deproteinized bovine bone mineral (DBBM) infused or not with recombinant human bone morphogenetic protein (rhBMP-2) in rabbit tibiae. MATERIALS AND METHODS A total of 18 female rabbits (New Zealand) received two blocks of DBBM in each tibia. The DBBM blocks were randomly assigned into four experimental groups: DBBM (only the bone graft); DBBM associated with absorbable collagen sponge (ACS); DBBM plus rhBMP-2 (1.5 mg/mL); and DBBM infused with rhBMP-2 (1.5 mg/mL) in an ACS carrier. Animals were sacrificed after 12 weeks, and the tibiae containing the DBBM blocks were dissected and analyzed radiographically (microcomputed tomography [micro-CT]), histologically, and immunohistochemically. RESULTS Micro-CT analysis showed a considerable increase in bone volume (BV) and BV/tissue volume in the rhBMP-2/ACS group compared with all the others. Trabeculae thickness also increased in the rhBMP-2/ACS group compared with the DBBM/ACS group. Trabecular number, separation, and bone mineral density were not different among groups. Histomorphometric evaluation showed increased newly formed bone in the rhBMP-2/ACS group compared with the DBBM and DBBM/ACS groups. The amount of residual bone graft was statistically higher in the rhBMP-2 groups compared with the DBBM/ACS group. Immunohistochemical analysis showed that the vascular endothelial growth factor (VEGF) expression was more intense in the rhBMP-2/ACS group compared with the DBBM/ACS group. The immunopositivity for type 1 collagen tended to be higher in the two groups with rhBMP-2. CONCLUSION Collectively, the results of this study suggest that the addition of rhBMP-2 in an ACS carrier placed on top of the DBBM graft enhanced bone formation in this animal model.
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Memmert S, Nogueira AVB, Damanaki A, Nokhbehsaim M, Eick S, Divnic-Resnik T, Spahr A, Rath-Deschner B, Till A, Götz W, Cirelli JA, Jäger A, Deschner J. Damage-regulated autophagy modulator 1 in oral inflammation and infection. Clin Oral Investig 2018; 22:2933-2941. [PMID: 29442188 DOI: 10.1007/s00784-018-2381-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 02/06/2018] [Indexed: 01/01/2023]
Abstract
OBJECTIVES Damage-regulated autophagy modulator (DRAM) 1 is a p53 target gene with possible involvement in oral inflammation and infection. This study sought to examine the presence and regulation of DRAM1 in periodontal diseases. MATERIAL AND METHODS In vitro, human periodontal ligament fibroblasts were exposed to interleukin (IL)-1β and Fusobacterium nucleatum for up to 2 days. The DRAM1 synthesis and its regulation were analyzed by real-time PCR, immunocytochemistry, and ELISA. Expressions of other autophagy-associated genes were also studied by real-time PCR. In vivo, synthesis of DRAM1 in gingival biopsies from rats and patients with and without periodontal disease was examined by real-time PCR and immunohistochemistry. For statistics, ANOVA and post-hoc tests were applied (p < 0.05). RESULTS In vitro, DRAM1 was significantly upregulated by IL-1β and F. nucleatum over 2 days and a wide range of concentrations. Additionally, increased DRAM1 protein levels in response to both stimulants were observed. Autophagy-associated genes ATG3, BAK1, HDAC6, and IRGM were also upregulated under inflammatory or infectious conditions. In vivo, the DRAM1 gene expression was significantly enhanced in rat gingival biopsies with induced periodontitis as compared to control. Significantly increased DRAM1 levels were also detected in human gingival biopsies from sites of periodontitis as compared to healthy sites. CONCLUSION Our data provide novel evidence that DRAM1 is increased under inflammatory and infectious conditions in periodontal cells and tissues, suggesting a pivotal role of DRAM1 in oral inflammation and infection. CLINICAL RELEVANCE DRAM1 might be a promising target in future diagnostic and treatment strategies for periodontitis.
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Affiliation(s)
- Svenja Memmert
- Section of Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany. .,Department of Orthodontics, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Bonn, Germany.
| | - A V B Nogueira
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University, UNESP, Araraquara, Brazil
| | - A Damanaki
- Section of Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany
| | - M Nokhbehsaim
- Section of Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany
| | - S Eick
- Department of Periodontology, Laboratory for Oral Microbiology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - T Divnic-Resnik
- Department/Discipline of Periodontics, Faculty of Dentistry, The University of Sydney, Sydney, Australia
| | - A Spahr
- Department/Discipline of Periodontics, Faculty of Dentistry, The University of Sydney, Sydney, Australia
| | - B Rath-Deschner
- Department of Orthodontics, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Bonn, Germany
| | - A Till
- Institute of Reconstructive Neurobiology, Life & Brain Center, University of Bonn, Bonn, Germany
| | - W Götz
- Department of Orthodontics, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Bonn, Germany
| | - J A Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University, UNESP, Araraquara, Brazil
| | - A Jäger
- Department of Orthodontics, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Bonn, Germany
| | - J Deschner
- Section of Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany.,Noel Martin Visiting Chair, Faculty of Dentistry, University of Sydney, Sydney, Australia
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Torres FFE, Bosso-Martelo R, Espir CG, Cirelli JA, Guerreiro-Tanomaru JM, Tanomaru-Filho M. Evaluation of physicochemical properties of root-end filling materials using conventional and Micro-CT tests. J Appl Oral Sci 2017; 25:374-380. [PMID: 28877275 PMCID: PMC5595109 DOI: 10.1590/1678-7757-2016-0454] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 12/29/2016] [Indexed: 11/21/2022] Open
Abstract
Objective To evaluate solubility, dimensional stability, filling ability and volumetric change of root-end filling materials using conventional tests and new Micro-CT-based methods. Material and Methods 7. Results The results suggested correlated or complementary data between the proposed tests. At 7 days, BIO showed higher solubility and at 30 days, showed higher volumetric change in comparison with MTA (p<0.05). With regard to volumetric change, the tested materials were similar (p>0.05) at 7 days. At 30 days, they presented similar solubility. BIO and MTA showed higher dimensional stability than ZOE (p<0.05). ZOE and BIO showed higher filling ability (p<0.05). Conclusions ZOE presented a higher dimensional change, and BIO had greater solubility after 7 days. BIO presented filling ability and dimensional stability, but greater volumetric change than MTA after 30 days. Micro-CT can provide important data on the physicochemical properties of materials complementing conventional tests.
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Affiliation(s)
| | - Roberta Bosso-Martelo
- Universidade Federal da Bahia, Curso de Odontologia, Departamento de Clínica Integrada, Salvador, BA, Brasil
| | - Camila Galletti Espir
- Universidade Estadual Paulista, Faculdade de Odontologia, Departamento de Odontologia Restauradora, Araraquara, SP, Brasil
| | - Joni Augusto Cirelli
- Universidade Estadual Paulista, Faculdade de Odontologia, Departamento de Diagnóstico e Cirurgia, Araraquara, SP, Brasil
| | | | - Mario Tanomaru-Filho
- Universidade Estadual Paulista, Faculdade de Odontologia, Departamento de Odontologia Restauradora, Araraquara, SP, Brasil
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Souza JACD, Nogueira AVB, Souza PPCD, Oliveira GJPLD, Medeiros MCD, Garlet GP, Cirelli JA, Rossa C. Suppressor of cytokine signaling 1 expression during LPS-induced inflammation and bone loss in rats. Braz Oral Res 2017; 31:e75. [PMID: 29019549 DOI: 10.1590/1807-3107bor-2017.vol31.0075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 06/26/2017] [Indexed: 11/22/2022] Open
Abstract
This study aimed to characterize the dynamics of suppressor of cytokine signaling (SOCS1) expression in a rat model of lipopolysaccharide-induced periodontitis. Wistar rats in the experimental groups were injected three times/week with LPS from Escherichia coli on the palatal aspect of the first molars, and control animals were injected with vehicle (phosphate-buffered saline). Animals were sacrificed 7, 15, and 30 days after the first injection to analyze inflammation (stereometric analysis), bone loss (macroscopic analysis), gene expression (qRT-PCR), and protein expression/activation (Western blotting). The severity of inflammation and bone loss associated with LPS-induced periodontitis increased from day 7 to day 15, and it was sustained through day 30. Significant (p < 0.05) increases in SOCS1, RANKL, OPG, and IFN-γ gene expression were observed in the experimental group versus the control group at day 15. SOCS1 protein expression and STAT1 and NF-κB activation were increased throughout the 30-day experimental period. Gingival tissues affected by experimental periodontitis express SOCS1, indicating that this protein may potentially downregulate signaling events involved in inflammatory reactions and bone loss and thus may play a relevant role in the development and progression of periodontal disease.
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Affiliation(s)
| | - Andressa Vilas Boas Nogueira
- Universidade Estadual Paulista - UNESP, School of Dentistry at Araraquara, Department of Diagnosis and Surgery, Araraquara, SP, Brazil
| | - Pedro Paulo Chaves de Souza
- Universidade Estadual Paulista - UNESP, School of Dentistry at Araraquara, Department of Physiology and Pathology, Araraquara, SP, Brazil
| | | | - Marcell Costa de Medeiros
- Universidade Estadual Paulista - UNESP, School of Dentistry at Araraquara, Department of Diagnosis and Surgery, Araraquara, SP, Brazil
| | - Gustavo Pompermaier Garlet
- Universidade de São Paulo - USP, School of Dentistry at Bauru, Department of Biological Sciences, Bauru, SP, Brazil
| | - Joni Augusto Cirelli
- Universidade Estadual Paulista - UNESP, School of Dentistry at Araraquara, Department of Diagnosis and Surgery, Araraquara, SP, Brazil
| | - Carlos Rossa
- Universidade Estadual Paulista - UNESP, School of Dentistry at Araraquara, Department of Diagnosis and Surgery, Araraquara, SP, Brazil
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Bedran TBL, Oliveira GJPLD, Spolidorio LC, Cirelli JA, Spolidorio DP. Comparison of two different methods for detecting periodontal pathogenic bacteria. Braz J Oral Sci 2017. [DOI: 10.20396/bjos.v15i3.8649599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Aim: To perform a comparative analysis between two methods for detecting Porphyromonas gingivalis, Tannerella forsythia and Porphyromonas endodontalis in periodontal plaque samples. Methods: The study sample consisted of twenty systemically healthy patients showing generalized chronic periodontitis. The subgingival samples for microbiological analysis were collected before (baseline) and 60 days after a basic periodontal therapy from 30 non-adjacent affected sites (Probing Depth (PD): 5-7 mm, Clinical Attachment Loss (CAL) ≥ 5 mm, positive for Bleeding on Probing (BOP)). Microbiological analysis was performed by PCR and qPCR. To allow a comparative analysis between both methods, qPCR was divided in three different scores (score 2: presence of more than 100 bacteria; score 1: presence of 10-100 bacteria, and score 0: absence of bacteria), in accordance to DNA quantity, while for PCR two scores were assigned: presence or absence of bacteria. Results: qPCR demonstrated higher sensitivity in the detection of these pathogens compared with PCR when scores 1 and 2 were considered positive. However, when only score 2 was considered positive, PCR and qPCR showed better agreement. Conclusions: qPCR demonstrated higher sensitivity than conventional PCR for detection of low numbers of microorganisms and can be useful for the quantification of periodontopathogens.
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Nogueira AVB, de Molon RS, Nokhbehsaim M, Deschner J, Cirelli JA. Cover Image. J Clin Periodontol 2017. [DOI: 10.1111/jcpe.12678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nogueira AVB, de Molon RS, Nokhbehsaim M, Deschner J, Cirelli JA. Contribution of biomechanical forces to inflammation-induced bone resorption. J Clin Periodontol 2016; 44:31-41. [PMID: 27716969 DOI: 10.1111/jcpe.12636] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/03/2016] [Indexed: 12/17/2022]
Abstract
AIM This study aimed to evaluate the contribution of biomechanical loading to inflammation-induced tissue destruction. MATERIALS AND METHODS A total of 144 adult Holtzman rats were randomly assigned into four experimental groups: control (C), ligature-induced periodontal disease (P), orthodontic movement (OM), and combination group (OMP). On days 1, 3, 7, and 15, following baseline, nine animals from each experimental group were killed. Bone volume fraction (BVF) and bone mineral density (BMD) were measured using micro-computed tomography. Expression and synthesis profile of cytokines and receptors of inflammation in gingival tissues were evaluated by PCR array assay and multiplex immunoassay. RESULTS At 15 days, the OMP group presented a significantly (p < 0.05) lower BVF and BMD levels when compared to all the other groups. The OMP group presented the highest number of upregulated protein targets in comparison to the other groups. Furthermore, the gene expression and protein levels of CCL2, CCL3, IL-1β, IL1-α, IL-18, TNF-α, and VEGF were significantly (p < 0.05) higher in the OMP group when compared to the P group. CONCLUSIONS In summary, mechanical loading modulates the inflammatory response of periodontal tissues to periodontal disease by increasing the expression of several pro-inflammatory mediators and receptors, which leads to increased bone resorption.
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Affiliation(s)
- Andressa Vilas Boas Nogueira
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ Estadual Paulista (UNESP), Araraquara, São Paulo, Brazil
| | - Rafael Scaf de Molon
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ Estadual Paulista (UNESP), Araraquara, São Paulo, Brazil
| | - Marjan Nokhbehsaim
- Section of Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Bonn, Germany
| | - James Deschner
- Section of Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Bonn, Germany
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ Estadual Paulista (UNESP), Araraquara, São Paulo, Brazil
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de Molon RS, Hsu C, Bezouglaia O, Dry SM, Pirih FQ, Soundia A, Cunha FQ, Cirelli JA, Aghaloo TL, Tetradis S. Rheumatoid Arthritis Exacerbates the Severity of Osteonecrosis of the Jaws (ONJ) in Mice. A Randomized, Prospective, Controlled Animal Study. J Bone Miner Res 2016; 31:1596-607. [PMID: 26950411 PMCID: PMC4970902 DOI: 10.1002/jbmr.2827] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 03/01/2016] [Accepted: 03/02/2016] [Indexed: 12/14/2022]
Abstract
Rheumatoid arthritis (RA), an autoimmune inflammatory disorder, results in persistent synovitis with severe bone and cartilage destruction. Bisphosphonates (BPs) are often utilized in RA patients to reduce bone destruction and manage osteoporosis. However, BPs, especially at high doses, are associated with osteonecrosis of the jaw (ONJ). Here, utilizing previously published ONJ animal models, we are exploring interactions between RA and ONJ incidence and severity. DBA1/J mice were divided into four groups: control, zoledronic acid (ZA), collagen-induced arthritis (CIA), and CIA-ZA. Animals were pretreated with vehicle or ZA. Bovine collagen II emulsified in Freund's adjuvant was injected to induce arthritis (CIA) and the mandibular molar crowns were drilled to induce periapical disease. Vehicle or ZA treatment continued for 8 weeks. ONJ indices were measured by micro-CT (µCT) and histological examination of maxillae and mandibles. Arthritis development was assessed by visual scoring of paw swelling, and by µCT and histology of interphalangeal and knee joints. Maxillae and mandibles of control and CIA mice showed bone loss, periodontal ligament (PDL) space widening, lamina dura loss, and cortex thinning. ZA prevented these changes in both ZA and CIA-ZA groups. Epithelial to alveolar crest distance was increased in the control and CIA mice. This distance was preserved in ZA and CIA-ZA animals. Empty osteocytic lacunae and areas of osteonecrosis were present in ZA and CIA-ZA but more extensively in CIA-ZA animals, indicating more severe ONJ. CIA and CIA-ZA groups developed severe arthritis in the paws and knees. Interphalangeal and knee joints of CIA mice showed advanced bone destruction with cortical erosions and trabecular bone loss, and ZA treatment reduced these effects. Importantly, no osteonecrosis was noted adjacent to areas of articular inflammation in CIA-ZA mice. Our data suggest that ONJ burden was more pronounced in ZA treated CIA mice and that RA could be a risk factor for ONJ development. © 2016 American Society for Bone and Mineral Research.
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Affiliation(s)
- Rafael Scaf de Molon
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA, USA.,Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University, Araraquara, Brazil
| | - Chingyun Hsu
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Olga Bezouglaia
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Sarah M Dry
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Flavia Q Pirih
- Division of Constitutive & Regenerative Sciences, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Akrivoula Soundia
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA, USA
| | | | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University, Araraquara, Brazil
| | - Tara L Aghaloo
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Sotirios Tetradis
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA, USA.,Molecular Biology Institute, UCLA, Los Angeles, CA, USA
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Cavagni J, de Macedo IC, Gaio EJ, Souza A, de Molon RS, Cirelli JA, Hoefel AL, Kucharski LC, Torres ILDS, Rösing CK. Obesity and Hyperlipidemia Modulate Alveolar Bone Loss in Wistar Rats. J Periodontol 2016; 87:e9-17. [DOI: 10.1902/jop.2015.150330] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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de Freitas CVS, Galdez LPV, Dias HLM, Cirelli JA, Souza EM, da Silva VCS. Effect of Subgingival Irrigation with Different Substances in the Treatment of Periodontal Disease. A Histometric Study in Rats. J Int Acad Periodontol 2016; 18:2-6. [PMID: 26764965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The aim of this study was to evaluate the histometric effects of subgingival irrigation with different solutions as adjuvant for the treatment of periodontal disease in rats. Periodontal disease was induced by ligature in the first lower molars of 91 Wistar rats over the course of 28 days. After removal of the ligatures, the animals were subjected to scaling and root planing, followed by subgingival irrigation with different solutions (0.9% saline, 0.2% chlorhexidine, 0.1% and 0.5% sodium hypochlorite and 11% propolis extract). The animals were sacrificed 7 and 14 days after the treatment and tissue was processed for histometric analysis for evaluation of bone support and epithelial migration. The histometric analysis showed no statistically significant differences between the group treated with scaling and groups treated with subgingival irrigation (p > 0.05) regarding bone support and epithelial migration. Similarly, significant differences were not found among the different solutions used for subgingival irrigation. This study agrees with the position of the American Academy of Periodontology, which states that there is insufficient evidence to indicate the routine use of subgingival irrigation as adjuvant to periodontal treatment.
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Affiliation(s)
| | - Larissa Paula Vieira Galdez
- Department of Dentistry II, School of Dentistry at São Luís, Maranhão Federal University, São Luís, Maranhão, Brazil
| | - Hugo Leonardo Melo Dias
- Department of Biology, Health Science Center, Maranhão Federal University, São Luís, Maranhão, Brazil
| | - Joni Augusto Cirelli
- Department of Diagnostic and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Erick Miranda Souza
- Department of Dentistry II, School of Dentistry at São Luís, Maranhão Federal University, São Luís, Maranhão, Brazil
| | - Vanessa Camila Silva da Silva
- Department of Dentistry II, School of Dentistry at São Luís, Maranhão Federal University, São Luís, Maranhão, Brazil.
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de Molon RS, de Avila ED, Cirelli JA, Mollo Jr FDA, de Andrade MF, Filho LABB, Barros LAB. A Combined Approach for the Treatment of Resorbed Fresh Sockets Allowing Immediate Implant Restoration: A 2-Year Follow-Up. J ORAL IMPLANTOL 2015; 41:712-8. [DOI: 10.1563/aaid-joi-d-13-00140] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Rafael Scaf de Molon
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ Estadual Paulista – UNESP, Araraquara, São Paulo, Brazil
| | - Erica Dorigatti de Avila
- Department of Dental Materials and Prosthodontics. School of Dentistry at Araraquara, Univ Estadual Paulista – UNESP, Araraquara, São Paulo, Brazil
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ Estadual Paulista – UNESP, Araraquara, São Paulo, Brazil
| | - Francisco de Assis Mollo Jr
- Department of Dental Materials and Prosthodontics. School of Dentistry at Araraquara, Univ Estadual Paulista – UNESP, Araraquara, São Paulo, Brazil
| | - Marcelo Ferrarezi de Andrade
- Department of Restorative Dentistry, School of Dentistry at Araraquara, Univ Estadual Paulista – UNESP, Araraquara, São Paulo, Brazil
| | - Luiz Antonio Borelli Barros Filho
- Private Practice; Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ Estadual Paulista – UNESP, Araraquara, São Paulo, Brazil
| | - Luiz Antonio Borelli Barros
- Department of Social Dentistry, School of Dentistry at Araraquara, Univ Estadual Paulista – UNESP, Araraquara, São Paulo, Brazil
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Leite FRM, de Aquino SG, Guimarães MR, Cirelli JA, Zamboni DS, Silva JS, Junior CR. Relevance of the myeloid differentiation factor 88 (MyD88) on RANKL, OPG, and nod expressions induced by TLR and IL-1R signaling in bone marrow stromal cells. Inflammation 2015; 38:1-8. [PMID: 25125146 DOI: 10.1007/s10753-014-0001-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The myeloid differentiation factor 88 (MyD88) plays a pivotal role in Toll-like receptor (TLR)- and interleukin-1 receptor (IL-1R)-induced osteoclastogenesis. We examined the role of MyD88 on p38 mitogen-activated protein kinase (MAPK) and nuclear factor kappa-light-chain-enhancer of activated B cell (NF-κB) activation and nucleotide-binding oligomerization domain (Nod) induction by lipopolysaccharide (LPS) and IL-1 beta, and their effect on receptor activator of NF-κB ligand (RANKL) and osteoprotegerin (OPG) production in bone marrow stromal cell (BMSC). RANKL, Nod1, Nod2, NF-κB, and p38 protein levels were determined by Western blot. Nod2 was stimulated with muramyl dipeptide (MDP) prior to TLR4 stimulation with LPS. MyD88 deficiency markedly inhibited RANKL expression after LPS stimulation and increased OPG messenger RNA (mRNA) production. Also, MyD88 was necessary for NF-κB and p38 MAPK activation. MDP alone did not induce RANKL and OPG expressions; however, when combined with LPS, their expressions were significantly increased (p < 0.05). Our results support that MyD88 signaling has a pivotal role in osteoclastogenesis thought NF-κB and p38 activation. Nod2 and especially Nod1 levels were influenced by MyD88.
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de Molon RS, de Avila ED, de Barros-Filho LAB, Ricci WA, Tetradis S, Cirelli JA, Borelli de Barros LA. Reconstruction of the Alveolar Buccal Bone Plate in Compromised Fresh Socket after Immediate Implant Placement Followed by Immediate Provisionalization. J ESTHET RESTOR DENT 2015; 27:122-35. [PMID: 26037327 DOI: 10.1111/jerd.12154] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The aim of this clinical report was to reestablish the buccal bone wall after immediate implant placement. The socket defect was corrected with autogenous bone, and a connective tissue graft was removed from the maxillary tuberosity to increase the thickness, height, and width of the buccal bone and gingival tissue followed by immediate provisionalization of the crown during the same operation. CLINICAL CONSIDERATIONS A 66-year-old patient presented with a hopeless maxillary left central incisor with loss of the buccal bone wall. Atraumatic, flapless extraction was performed, and an immediate implant was placed in the extraction socket followed by preparation of an immediate provisional restoration. Subsequently, immediate reconstruction of the buccal bone plate was performed, using the tuberosity as the donor site, to obtain block bone and connective tissue grafts, as well as particulate bone. Finally, immediate provisionalization of the crown followed by simple sutures was performed. Cone-beam computed tomography and periapical radiographs were taken before and after surgery. After 4 months, the final prosthetic crown was made. After a 2-year follow-up, a satisfactory aesthetic result was achieved with lower treatment time and morbidity. CONCLUSION This case demonstrates the effective use of immediate reconstruction of the buccal bone wall for the treatment of a hopeless tooth in the maxillary aesthetic area. This procedure efficiently promoted harmonious gingival and bone architecture, recovered lost anatomical structures with sufficient width and thickness, and maintained the stability of the alveolar bone crest in a single procedure. CLINICAL SIGNIFICANCE If appropriate clinical conditions exist, immediate dentoalveolar restoration may be the most conservative means of reconstructing the buccal bone wall after immediate implant placement followed by immediate provisionalization with predictable healing and lower treatment time.
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Affiliation(s)
- Rafael Scaf de Molon
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA, 90095, USA.,Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ Estadual Paulista-UNESP, Araraquara, SP, Brazil
| | - Erica Dorigatti de Avila
- Department of Dental Materials and Prosthodontics, School of Dentistry at Araraquara, Univ Estadual Paulista-UNESP, Araraquara, SP, Brazil
| | | | - Weber Adad Ricci
- Department of Social Dentistry, School of Dentistry at Araraquara, Univ Estadual Paulista-UNESP, Araraquara, SP, Brazil
| | - Sotirios Tetradis
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA, 90095, USA.,Molecular Biology Institute, UCLA, Los Angeles, CA, 90095, USA
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ Estadual Paulista-UNESP, Araraquara, SP, Brazil
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de Molon RS, Cheong S, Bezouglaia O, Dry SM, Pirih F, Cirelli JA, Aghaloo TL, Tetradis S. Spontaneous osteonecrosis of the jaws in the maxilla of mice on antiresorptive treatment: a novel ONJ mouse model. Bone 2014; 68:11-9. [PMID: 25093262 PMCID: PMC4476062 DOI: 10.1016/j.bone.2014.07.027] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Revised: 07/02/2014] [Accepted: 07/20/2014] [Indexed: 11/20/2022]
Abstract
Although osteonecrosis of the jaws (ONJ), a serious complication of antiresorptive medications, was reported a decade ago, the exact mechanisms of disease pathophysiology remain elusive. ONJ-like lesions can be induced in animals after antiresorptive treatment and experimental interventions such as tooth extraction or periapical or periodontal disease. However, experimental induction and manipulation of disease progression does not always reflect clinical reality. Interestingly, naturally occurring maxillofacial abscesses, inducing aggressive inflammation of the peri-radicular mucosa with significant osteolysis and alveolar bone expansion, have been reported in mice. Here, we aimed to explore whether osteonecrotic lesions would develop in areas of maxillary peri-radicular infections, in mice on antiresorptive medications with distinct pharmacologic action, thus establishing a novel ONJ animal model. Mice were treated with RANK-Fc or OPG-Fc that bind to RANKL or with the potent bisphosphonate zoledronic acid (ZA). Maxillae were assessed radiographically and histologically. μCT imaging of vehicle mice revealed several maxillae with altered alveolar bone morphology, significant ridge expansion and large lytic areas. However, in RANK-Fc, OPG-Fc and ZA treated animals the extent of bone loss was significantly less, but exuberant bone deposition was noted at the ridge periphery. BV and BV/TV were increased in the diseased site of antiresorptive vs. veh animals. Histologically, extensive inflammation, bone resorption and marginal gingival epithelium migration were seen in the diseased site of vehicle animals. Rank-Fc, OPG-Fc and ZA reduced alveolar bone loss, increased periosteal bone formation, and induced areas of osteonecrosis, and bone exposure that in many animals covered significant part of the alveolar bone. Collectively, our data demonstrate ONJ-like lesions at sites of maxillary peri-radicular infection, indistinguishable in mice treated with RAKL inhibitors vs. zoledronate. This novel mouse model of spontaneous ONJ supports a central role of osteoclast inhibition and infection/inflammation in ONJ pathogenesis and validates and complements existing animal models employing experimental interventions.
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Affiliation(s)
- Rafael Scaf de Molon
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA; Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara 14801-903, Brazil
| | - Simon Cheong
- Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
| | - Olga Bezouglaia
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Sarah M Dry
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA
| | - Flavia Pirih
- Division of Associated Specialties, UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara 14801-903, Brazil
| | - Tara L Aghaloo
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA.
| | - Sotirios Tetradis
- Division of Diagnostic and Surgical Sciences, UCLA School of Dentistry, Los Angeles, CA 90095, USA; Molecular Biology Institute, UCLA, Los Angeles, CA 90095, USA.
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de Molon RS, Kim YJ, Dos Santos-Pinto A, Cirelli JA. Improvement of an anterior infrabone defect using combined periodontal and orthodontic therapy: A 6-year follow-up case report. Eur J Dent 2014; 8:407-411. [PMID: 25202224 PMCID: PMC4144142 DOI: 10.4103/1305-7456.137657] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Extensive intraosseous lesions represent a clinical challenge for the periodontist. Sites with bone defects have been shown to be at higher risk of periodontitis progression in patients who had not received periodontal therapy. Thus, the aim of this case report was to describe a novel approach for the treatment of 1-walled intraosseous defect by combining nonsurgical periodontal therapy and orthodontic movement toward the bone defect, avoiding regenerative and surgical procedures. A 47-year-old woman underwent the proposed procedures for the treatment of her left central incisor with 9 mm probing depth and 1-walled intraosseous defect in its mesial aspect. Initially, basic periodontal therapy with scaling and root planning was accomplished. Two months later, an orthodontic treatment was planned to eliminate the intraosseous lesion and to improve the interproximal papillary area. Orthodontic root movement toward the osseous defect was performed for 13 months with light forces. After 6 years postoperative it was concluded that combined basic periodontal therapy and orthodontic movement was capable of eliminating the intraosseous defect and improve the esthetics in the interproximal papillary area between the central incisors.
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Affiliation(s)
- Rafael Scaf de Molon
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, University of Estadual Paulista, Araraquara, São Paulo, Brazil
| | - Yeon Jung Kim
- Department of Implantology, University of Santo Amaro, Santo Amaro, Sao Paulo, Brazil
| | - Ary Dos Santos-Pinto
- Department of Orthodontics, School of Dentistry at Araraquara, University of Estadual Paulista, Araraquara, São Paulo, Brazil
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, University of Estadual Paulista, Araraquara, São Paulo, Brazil
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Nokhbehsaim M, Keser S, Nogueira AVB, Jäger A, Jepsen S, Cirelli JA, Bourauel C, Eick S, Deschner J. Leptin effects on the regenerative capacity of human periodontal cells. Int J Endocrinol 2014; 2014:180304. [PMID: 25136363 PMCID: PMC4129942 DOI: 10.1155/2014/180304] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 06/26/2014] [Accepted: 07/04/2014] [Indexed: 01/10/2023] Open
Abstract
Obesity is increasing throughout the globe and characterized by excess adipose tissue, which represents a complex endocrine organ. Adipose tissue secrets bioactive molecules called adipokines, which act at endocrine, paracrine, and autocrine levels. Obesity has recently been shown to be associated with periodontitis, a disease characterized by the irreversible destruction of the tooth-supporting tissues, that is, periodontium, and also with compromised periodontal healing. Although the underlying mechanisms for these associations are not clear yet, increased levels of proinflammatory adipokines, such as leptin, as found in obese individuals, might be a critical pathomechanistic link. The objective of this study was to examine the impact of leptin on the regenerative capacity of human periodontal ligament (PDL) cells and also to study the local leptin production by these cells. Leptin caused a significant downregulation of growth (TGFβ1, and VEGFA) and transcription (RUNX2) factors as well as matrix molecules (collagen, and periostin) and inhibited SMAD signaling under regenerative conditions. Moreover, the local expression of leptin and its full-length receptor was significantly downregulated by inflammatory, microbial, and biomechanical signals. This study demonstrates that the hormone leptin negatively interferes with the regenerative capacity of PDL cells, suggesting leptin as a pathomechanistic link between obesity and compromised periodontal healing.
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Affiliation(s)
- Marjan Nokhbehsaim
- Experimental Dento-Maxillo-Facial Medicine, University of Bonn, 53111 Bonn, Germany
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
| | - Sema Keser
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
| | - Andressa Vilas Boas Nogueira
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
- Department of Diagnosis and Surgery, School of Dentistry, UNESP, 14801-903 Araraquara, SP, Brazil
| | - Andreas Jäger
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
- Department of Orthodontics, University of Bonn, 53111 Bonn, Germany
| | - Søren Jepsen
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
- Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, 53111 Bonn, Germany
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry, UNESP, 14801-903 Araraquara, SP, Brazil
| | - Christoph Bourauel
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
- Oral Technology, Center of Dento-Maxillo-Facial Medicine, University of Bonn, 53111 Bonn, Germany
| | - Sigrun Eick
- Department of Periodontology, Laboratory of Oral Microbiology, University of Bern, 3010 Bern, Switzerland
| | - James Deschner
- Experimental Dento-Maxillo-Facial Medicine, University of Bonn, 53111 Bonn, Germany
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
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Nokhbehsaim M, Keser S, Nogueira AVB, Cirelli JA, Jepsen S, Jäger A, Eick S, Deschner J. Beneficial effects of adiponectin on periodontal ligament cells under normal and regenerative conditions. J Diabetes Res 2014; 2014:796565. [PMID: 25121107 PMCID: PMC4120919 DOI: 10.1155/2014/796565] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 06/24/2014] [Accepted: 06/25/2014] [Indexed: 01/24/2023] Open
Abstract
Type 2 diabetes and obesity are increasing worldwide and linked to periodontitis, a chronic disease which is characterized by the irreversible destruction of the tooth-supporting tissues, that is, periodontium. The mechanisms underlying the association of diabetes mellitus and obesity with periodontal destruction and compromised periodontal healing are not well understood, but decreased plasma levels of adiponectin, as found in diabetic and obese individuals, might be a critical mechanistic link. The aim of this in vitro study was to examine the effects of adiponectin on periodontal ligament (PDL) cells under normal and regenerative conditions, and to study the regulation of adiponectin and its receptors in these cells. Adiponectin stimulated significantly the expression of growth factors and extracellular matrix, proliferation, and in vitro wound healing, reduced significantly the constitutive tumor necrosis factor-α expression, and caused a significant upregulation of its own expression. The beneficial actions of enamel matrix derivative on a number of PDL cell functions critical for periodontal regeneration were partially enhanced by adiponectin. The periodontopathogen Porphyromonas gingivalis inhibited the adiponectin expression and stimulated the expression of its receptors. In conclusion, reduced levels of adiponectin, as found in type 2 diabetes and obesity, may compromise periodontal health and healing.
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Affiliation(s)
- Marjan Nokhbehsaim
- Experimental Dento-Maxillo-Facial Medicine, University of Bonn, 53111 Bonn, Germany
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
| | - Sema Keser
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
| | - Andressa Vilas Boas Nogueira
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
- Department of Diagnosis and Surgery, School of Dentistry, UNESP, 14801-903 Araraquara, SP, Brazil
| | - Joni Augusto Cirelli
- Department of Diagnosis and Surgery, School of Dentistry, UNESP, 14801-903 Araraquara, SP, Brazil
| | - Søren Jepsen
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
- Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, 53111 Bonn, Germany
| | - Andreas Jäger
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
- Department of Orthodontics, University of Bonn, 53111 Bonn, Germany
| | - Sigrun Eick
- Department of Periodontology, Laboratory of Oral Microbiology, University of Bern, 3010 Bern, Switzerland
| | - James Deschner
- Experimental Dento-Maxillo-Facial Medicine, University of Bonn, 53111 Bonn, Germany
- Clinical Research Unit 208, University of Bonn, 53111 Bonn, Germany
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de Molon RS, de Avila ED, Boas Nogueira AV, Chaves de Souza JA, Avila-Campos MJ, de Andrade CR, Cirelli JA. Evaluation of the Host Response in Various Models of Induced Periodontal Disease in Mice. J Periodontol 2014; 85:465-77. [DOI: 10.1902/jop.2013.130225] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Pavone C, Perussi LR, de Oliveira GJPL, Scardueli CR, Cirelli JA, Cerri PS, Junior EM, Spolidorio LC, Marcantonio RAC. Effect of Er,Cr:YSGG laser application in the treatment of experimental periodontitis. Lasers Med Sci 2014; 30:993-9. [PMID: 24477391 DOI: 10.1007/s10103-014-1526-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 01/13/2014] [Indexed: 11/24/2022]
Abstract
The purpose of this study was to evaluate the influence of an erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser in the absence or presence of manual scaling and root planning (SRP) for the treatment of induced periodontitis in rats. Ligatures were placed in the subgingival region of the maxillary first molar. After a 7-day period, the ligatures were removed, and 40 rats were randomly divided into four groups (G), as follows: (GI) no treatment, (GII) scaling and root planning (SRP) with curettes, (GIII) Er,Cr:YSGG laser irradiation and (GIV) SRP with curettes followed by Er,Cr:YSGG laser irradiation. Seven and 30 days after the treatment, the animals were sacrificed and histologic, histometric and immunohistochemistry analyses were performed. All groups showed similar histopathological characteristics during the evaluation period. The histometric analysis was confirmed using Bonferroni and paired t tests. At 7 and 30 days, groups II, III and IV exhibited greater bone formation in the furcation area when compared to group I (p < 0.0001; p < 0.05). During the 7-day period, the groups irradiated with the laser (III and IV) showed a statistically larger new bone area than the group treated with SRP (II) (p < 0.01). Immunohistochemistry analysis revealed that the control group exhibited a higher expression of tartrate-resistant acid phosphatase (TRAP) and the receptor activator of nuclear factor κΒ ligand (RANKL) when compared to groups II, III and IV (p < 0.05). All treatments were able to reduce the inflammatory processes, consequently enabling the repair of periodontal tissues. The results achieved with the application of the Er,Cr:YSGG laser suggest that this laser can stimulate greater bone formation, especially over a shorter period of time.
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Affiliation(s)
- Chaine Pavone
- Araraquara Dental School-São Paulo State University "Júlio de Mesquita Filho", Araraquara, São Paulo, Brazil
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Leite FRM, Aquino SGD, Guimarães MR, Cirelli JA, Junior CR. RANKL expression is differentially modulated by TLR2 and TLR4 signaling in fibroblasts and osteoblasts. ACTA ACUST UNITED AC 2014. [DOI: 10.7243/2053-213x-2-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Florian F, Faria LM, Balducci EZ, Cirelli JA. Desenvolvimento do germe dentário e do palato em fetos de camundongos sob o efeito da Sinvastatina. Rev odontol UNESP 2013. [DOI: 10.1590/s1807-25772013000600001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
INTRODUÇÃO: As estatinas causaram uma revolução na prevenção e no tratamento do colesterol alto, porém é contraindicada no primeiro trimestre da gravidez, pois podem causar má formação no feto, no sistema nervoso central e nos membros. OBJETIVO: Verificar os efeitos da Sinvastatina na formação do palato e no desenvolvimento dos germes dentários dos primeiros molares superiores e inferiores. MATERIAL E MÉTODO: Para o acasalamento, foram utilizados 14 camundongos fêmeas e quatro machos; o dia 'zero' da gestação foi identificado pelo plug vaginal após acasalamento. As fêmeas prenhes foram divididas em Grupos I e III - receberam 10 mg/kg solução salina em três semanas antes do acasalamento e a partir do acasalamento até o 14.º dia de prenhez, respectivamente. Grupos II e IV receberam 10 mg/kg de Sinvastatina, no período de três semanas antes do acasalamento e a partir do acasalamento até o 14.º dia de prenhez, respectivamente. RESULTADO: A análise histológica dos fetos dos Grupos I, II, III e IV mostrou o palato fusionado na linha mediana do processo palatino. Os germes dentários dos primeiros molares dos Grupos II e IV apresentaram um desenvolvimento atrasado quando comparados aos Grupos I e III, porém, todos estavam nas etapas de capuz e campânula. CONCLUSÃO: As análises histológica e estatística mostraram que os fetos apresentaram palato fusionado na linha média de fusão do processo palatino e os germes dentários dos Grupos II e IV mostraram-se com formas indefinidas e contornos irregulares. Este estudo preliminar mostrou que a Sinvastatina pode ocasionar alterações morfológicas nos germes dentários.
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de Molon RS, de Avila ED, de Souza JAC, Nogueira AVB, Cirelli CC, Margonar R, Cirelli JA. Forced orthodontic eruption for augmentation of soft and hard tissue prior to implant placement. Contemp Clin Dent 2013; 4:243-7. [PMID: 24015019 PMCID: PMC3757892 DOI: 10.4103/0976-237x.114876] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Forced orthodontic eruption (FOE) is a non-surgical treatment option that allows modifying the osseous and gingival topography. The aim of this article is to present a clinical case of a FOE, which resulted in an improvement of the amount of available bone and soft-tissues for implant site development. Patient was referred for treatment of mobility and unesthetic appearance of their maxillary incisors. Clinical and radiographic examination revealed inflamed gingival tissue, horizontal and vertical tooth mobility and interproximal angular bone defects. It was chosen a multidisciplinary treatment approach using FOE, tooth extraction, and immediate implant placement to achieve better esthetic results. The use of FOE, in periodontally compromised teeth, promoted the formation of a new bone and soft-tissue in a coronal direction, without additional surgical procedures, enabling an esthetic, and functional implant-supported restoration.
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Affiliation(s)
- Rafael Scaf de Molon
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ Estadual Paulista - UNESP, Araraquara, São Paulo, Brazil
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Boas Nogueira AV, Chaves de Souza JA, Kim YJ, Damião de Sousa-Neto M, Chan Cirelli C, Cirelli JA. Orthodontic Force Increases Interleukin-1β and Tumor Necrosis Factor-α Expression and Alveolar Bone Loss in Periodontitis. J Periodontol 2013. [DOI: 10.1902/jop.2012.120510] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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